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linux_dsm_epyc7002/drivers/gpu/drm/i915/display/intel_display.c
Ville Syrjälä 03b0ce9532 drm/i915: Add support for half float framebuffers for gen4+ primary planes 
gen4+ supports fp16 pixel formats on the primary planes. Add the
relevant code.

On ivb fp16 scanout is slightly busted. The output from the plane will
have 1/4 the expected value. For the primary plane we would have to
use the pipe gamma or pipe csc to correct that which would affect all
the other planes as well, hence we simply choose not to expose fp16
on the ivb primary plane. On hsw the primary plane got fixed.

On gmch platforms I observed that the plane width must be below 2k
pixels with fp16 or else we get a corrupted image. This limitation
does not seem to be documented in bspec. I verified the exact limit
using the chv pipe B primary plane since it has windowing capability.
The stride limits are unaffected by fp16.

v2: Rebase on top of icl fp16
    Split thea gen4+ primary plane bits into a separate patch
    Deal with HAS_GMCH()

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191015193035.25982-9-ville.syrjala@linux.intel.com
2019-10-24 21:22:25 +03:00

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/*
* Copyright © 2006-2007 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Authors:
* Eric Anholt <eric@anholt.net>
*/
#include <linux/i2c.h>
#include <linux/input.h>
#include <linux/intel-iommu.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/dma-resv.h>
#include <linux/slab.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_atomic_uapi.h>
#include <drm/drm_dp_helper.h>
#include <drm/drm_edid.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_rect.h>
#include <drm/i915_drm.h>
#include "display/intel_crt.h"
#include "display/intel_ddi.h"
#include "display/intel_dp.h"
#include "display/intel_dsi.h"
#include "display/intel_dvo.h"
#include "display/intel_gmbus.h"
#include "display/intel_hdmi.h"
#include "display/intel_lvds.h"
#include "display/intel_sdvo.h"
#include "display/intel_tv.h"
#include "display/intel_vdsc.h"
#include "i915_drv.h"
#include "i915_trace.h"
#include "intel_acpi.h"
#include "intel_atomic.h"
#include "intel_atomic_plane.h"
#include "intel_bw.h"
#include "intel_cdclk.h"
#include "intel_color.h"
#include "intel_display_types.h"
#include "intel_fbc.h"
#include "intel_fbdev.h"
#include "intel_fifo_underrun.h"
#include "intel_frontbuffer.h"
#include "intel_hdcp.h"
#include "intel_hotplug.h"
#include "intel_overlay.h"
#include "intel_pipe_crc.h"
#include "intel_pm.h"
#include "intel_psr.h"
#include "intel_quirks.h"
#include "intel_sideband.h"
#include "intel_sprite.h"
#include "intel_tc.h"
#include "intel_vga.h"
/* Primary plane formats for gen <= 3 */
static const u32 i8xx_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_XRGB8888,
};
/* Primary plane formats for ivb (no fp16 due to hw issue) */
static const u32 ivb_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_XRGB2101010,
DRM_FORMAT_XBGR2101010,
};
/* Primary plane formats for gen >= 4, except ivb */
static const u32 i965_primary_formats[] = {
DRM_FORMAT_C8,
DRM_FORMAT_RGB565,
DRM_FORMAT_XRGB8888,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_XRGB2101010,
DRM_FORMAT_XBGR2101010,
DRM_FORMAT_XBGR16161616F,
};
static const u64 i9xx_format_modifiers[] = {
I915_FORMAT_MOD_X_TILED,
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID
};
/* Cursor formats */
static const u32 intel_cursor_formats[] = {
DRM_FORMAT_ARGB8888,
};
static const u64 cursor_format_modifiers[] = {
DRM_FORMAT_MOD_LINEAR,
DRM_FORMAT_MOD_INVALID
};
static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config);
static void ironlake_pch_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config);
static int intel_framebuffer_init(struct intel_framebuffer *ifb,
struct drm_i915_gem_object *obj,
struct drm_mode_fb_cmd2 *mode_cmd);
static void intel_set_pipe_timings(const struct intel_crtc_state *crtc_state);
static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state);
static void intel_cpu_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
const struct intel_link_m_n *m_n,
const struct intel_link_m_n *m2_n2);
static void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state);
static void ironlake_set_pipeconf(const struct intel_crtc_state *crtc_state);
static void haswell_set_pipeconf(const struct intel_crtc_state *crtc_state);
static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state);
static void vlv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config);
static void chv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config);
static void intel_crtc_init_scalers(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state);
static void skylake_pfit_enable(const struct intel_crtc_state *crtc_state);
static void ironlake_pfit_disable(const struct intel_crtc_state *old_crtc_state);
static void ironlake_pfit_enable(const struct intel_crtc_state *crtc_state);
static void intel_modeset_setup_hw_state(struct drm_device *dev,
struct drm_modeset_acquire_ctx *ctx);
static void intel_pre_disable_primary_noatomic(struct drm_crtc *crtc);
struct intel_limit {
struct {
int min, max;
} dot, vco, n, m, m1, m2, p, p1;
struct {
int dot_limit;
int p2_slow, p2_fast;
} p2;
};
/* returns HPLL frequency in kHz */
int vlv_get_hpll_vco(struct drm_i915_private *dev_priv)
{
int hpll_freq, vco_freq[] = { 800, 1600, 2000, 2400 };
/* Obtain SKU information */
hpll_freq = vlv_cck_read(dev_priv, CCK_FUSE_REG) &
CCK_FUSE_HPLL_FREQ_MASK;
return vco_freq[hpll_freq] * 1000;
}
int vlv_get_cck_clock(struct drm_i915_private *dev_priv,
const char *name, u32 reg, int ref_freq)
{
u32 val;
int divider;
val = vlv_cck_read(dev_priv, reg);
divider = val & CCK_FREQUENCY_VALUES;
WARN((val & CCK_FREQUENCY_STATUS) !=
(divider << CCK_FREQUENCY_STATUS_SHIFT),
"%s change in progress\n", name);
return DIV_ROUND_CLOSEST(ref_freq << 1, divider + 1);
}
int vlv_get_cck_clock_hpll(struct drm_i915_private *dev_priv,
const char *name, u32 reg)
{
int hpll;
vlv_cck_get(dev_priv);
if (dev_priv->hpll_freq == 0)
dev_priv->hpll_freq = vlv_get_hpll_vco(dev_priv);
hpll = vlv_get_cck_clock(dev_priv, name, reg, dev_priv->hpll_freq);
vlv_cck_put(dev_priv);
return hpll;
}
static void intel_update_czclk(struct drm_i915_private *dev_priv)
{
if (!(IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)))
return;
dev_priv->czclk_freq = vlv_get_cck_clock_hpll(dev_priv, "czclk",
CCK_CZ_CLOCK_CONTROL);
DRM_DEBUG_DRIVER("CZ clock rate: %d kHz\n", dev_priv->czclk_freq);
}
static inline u32 /* units of 100MHz */
intel_fdi_link_freq(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *pipe_config)
{
if (HAS_DDI(dev_priv))
return pipe_config->port_clock; /* SPLL */
else
return dev_priv->fdi_pll_freq;
}
static const struct intel_limit intel_limits_i8xx_dac = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 2, .max = 33 },
.p2 = { .dot_limit = 165000,
.p2_slow = 4, .p2_fast = 2 },
};
static const struct intel_limit intel_limits_i8xx_dvo = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 2, .max = 33 },
.p2 = { .dot_limit = 165000,
.p2_slow = 4, .p2_fast = 4 },
};
static const struct intel_limit intel_limits_i8xx_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 908000, .max = 1512000 },
.n = { .min = 2, .max = 16 },
.m = { .min = 96, .max = 140 },
.m1 = { .min = 18, .max = 26 },
.m2 = { .min = 6, .max = 16 },
.p = { .min = 4, .max = 128 },
.p1 = { .min = 1, .max = 6 },
.p2 = { .dot_limit = 165000,
.p2_slow = 14, .p2_fast = 7 },
};
static const struct intel_limit intel_limits_i9xx_sdvo = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1400000, .max = 2800000 },
.n = { .min = 1, .max = 6 },
.m = { .min = 70, .max = 120 },
.m1 = { .min = 8, .max = 18 },
.m2 = { .min = 3, .max = 7 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 200000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_i9xx_lvds = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1400000, .max = 2800000 },
.n = { .min = 1, .max = 6 },
.m = { .min = 70, .max = 120 },
.m1 = { .min = 8, .max = 18 },
.m2 = { .min = 3, .max = 7 },
.p = { .min = 7, .max = 98 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 112000,
.p2_slow = 14, .p2_fast = 7 },
};
static const struct intel_limit intel_limits_g4x_sdvo = {
.dot = { .min = 25000, .max = 270000 },
.vco = { .min = 1750000, .max = 3500000},
.n = { .min = 1, .max = 4 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 10, .max = 30 },
.p1 = { .min = 1, .max = 3},
.p2 = { .dot_limit = 270000,
.p2_slow = 10,
.p2_fast = 10
},
};
static const struct intel_limit intel_limits_g4x_hdmi = {
.dot = { .min = 22000, .max = 400000 },
.vco = { .min = 1750000, .max = 3500000},
.n = { .min = 1, .max = 4 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 16, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8},
.p2 = { .dot_limit = 165000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_g4x_single_channel_lvds = {
.dot = { .min = 20000, .max = 115000 },
.vco = { .min = 1750000, .max = 3500000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 0,
.p2_slow = 14, .p2_fast = 14
},
};
static const struct intel_limit intel_limits_g4x_dual_channel_lvds = {
.dot = { .min = 80000, .max = 224000 },
.vco = { .min = 1750000, .max = 3500000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 104, .max = 138 },
.m1 = { .min = 17, .max = 23 },
.m2 = { .min = 5, .max = 11 },
.p = { .min = 14, .max = 42 },
.p1 = { .min = 2, .max = 6 },
.p2 = { .dot_limit = 0,
.p2_slow = 7, .p2_fast = 7
},
};
static const struct intel_limit intel_limits_pineview_sdvo = {
.dot = { .min = 20000, .max = 400000},
.vco = { .min = 1700000, .max = 3500000 },
/* Pineview's Ncounter is a ring counter */
.n = { .min = 3, .max = 6 },
.m = { .min = 2, .max = 256 },
/* Pineview only has one combined m divider, which we treat as m2. */
.m1 = { .min = 0, .max = 0 },
.m2 = { .min = 0, .max = 254 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 200000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_pineview_lvds = {
.dot = { .min = 20000, .max = 400000 },
.vco = { .min = 1700000, .max = 3500000 },
.n = { .min = 3, .max = 6 },
.m = { .min = 2, .max = 256 },
.m1 = { .min = 0, .max = 0 },
.m2 = { .min = 0, .max = 254 },
.p = { .min = 7, .max = 112 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 112000,
.p2_slow = 14, .p2_fast = 14 },
};
/* Ironlake / Sandybridge
*
* We calculate clock using (register_value + 2) for N/M1/M2, so here
* the range value for them is (actual_value - 2).
*/
static const struct intel_limit intel_limits_ironlake_dac = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 5 },
.m = { .min = 79, .max = 127 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 5, .max = 80 },
.p1 = { .min = 1, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 10, .p2_fast = 5 },
};
static const struct intel_limit intel_limits_ironlake_single_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 118 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 14, .p2_fast = 14 },
};
static const struct intel_limit intel_limits_ironlake_dual_lvds = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 127 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 14, .max = 56 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 7, .p2_fast = 7 },
};
/* LVDS 100mhz refclk limits. */
static const struct intel_limit intel_limits_ironlake_single_lvds_100m = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 2 },
.m = { .min = 79, .max = 126 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 28, .max = 112 },
.p1 = { .min = 2, .max = 8 },
.p2 = { .dot_limit = 225000,
.p2_slow = 14, .p2_fast = 14 },
};
static const struct intel_limit intel_limits_ironlake_dual_lvds_100m = {
.dot = { .min = 25000, .max = 350000 },
.vco = { .min = 1760000, .max = 3510000 },
.n = { .min = 1, .max = 3 },
.m = { .min = 79, .max = 126 },
.m1 = { .min = 12, .max = 22 },
.m2 = { .min = 5, .max = 9 },
.p = { .min = 14, .max = 42 },
.p1 = { .min = 2, .max = 6 },
.p2 = { .dot_limit = 225000,
.p2_slow = 7, .p2_fast = 7 },
};
static const struct intel_limit intel_limits_vlv = {
/*
* These are the data rate limits (measured in fast clocks)
* since those are the strictest limits we have. The fast
* clock and actual rate limits are more relaxed, so checking
* them would make no difference.
*/
.dot = { .min = 25000 * 5, .max = 270000 * 5 },
.vco = { .min = 4000000, .max = 6000000 },
.n = { .min = 1, .max = 7 },
.m1 = { .min = 2, .max = 3 },
.m2 = { .min = 11, .max = 156 },
.p1 = { .min = 2, .max = 3 },
.p2 = { .p2_slow = 2, .p2_fast = 20 }, /* slow=min, fast=max */
};
static const struct intel_limit intel_limits_chv = {
/*
* These are the data rate limits (measured in fast clocks)
* since those are the strictest limits we have. The fast
* clock and actual rate limits are more relaxed, so checking
* them would make no difference.
*/
.dot = { .min = 25000 * 5, .max = 540000 * 5},
.vco = { .min = 4800000, .max = 6480000 },
.n = { .min = 1, .max = 1 },
.m1 = { .min = 2, .max = 2 },
.m2 = { .min = 24 << 22, .max = 175 << 22 },
.p1 = { .min = 2, .max = 4 },
.p2 = { .p2_slow = 1, .p2_fast = 14 },
};
static const struct intel_limit intel_limits_bxt = {
/* FIXME: find real dot limits */
.dot = { .min = 0, .max = INT_MAX },
.vco = { .min = 4800000, .max = 6700000 },
.n = { .min = 1, .max = 1 },
.m1 = { .min = 2, .max = 2 },
/* FIXME: find real m2 limits */
.m2 = { .min = 2 << 22, .max = 255 << 22 },
.p1 = { .min = 2, .max = 4 },
.p2 = { .p2_slow = 1, .p2_fast = 20 },
};
/* WA Display #0827: Gen9:all */
static void
skl_wa_827(struct drm_i915_private *dev_priv, enum pipe pipe, bool enable)
{
if (enable)
I915_WRITE(CLKGATE_DIS_PSL(pipe),
I915_READ(CLKGATE_DIS_PSL(pipe)) |
DUPS1_GATING_DIS | DUPS2_GATING_DIS);
else
I915_WRITE(CLKGATE_DIS_PSL(pipe),
I915_READ(CLKGATE_DIS_PSL(pipe)) &
~(DUPS1_GATING_DIS | DUPS2_GATING_DIS));
}
/* Wa_2006604312:icl */
static void
icl_wa_scalerclkgating(struct drm_i915_private *dev_priv, enum pipe pipe,
bool enable)
{
if (enable)
I915_WRITE(CLKGATE_DIS_PSL(pipe),
I915_READ(CLKGATE_DIS_PSL(pipe)) | DPFR_GATING_DIS);
else
I915_WRITE(CLKGATE_DIS_PSL(pipe),
I915_READ(CLKGATE_DIS_PSL(pipe)) & ~DPFR_GATING_DIS);
}
static bool
needs_modeset(const struct intel_crtc_state *state)
{
return drm_atomic_crtc_needs_modeset(&state->base);
}
bool
is_trans_port_sync_mode(const struct intel_crtc_state *crtc_state)
{
return (crtc_state->master_transcoder != INVALID_TRANSCODER ||
crtc_state->sync_mode_slaves_mask);
}
static bool
is_trans_port_sync_master(const struct intel_crtc_state *crtc_state)
{
return (crtc_state->master_transcoder == INVALID_TRANSCODER &&
crtc_state->sync_mode_slaves_mask);
}
/*
* Platform specific helpers to calculate the port PLL loopback- (clock.m),
* and post-divider (clock.p) values, pre- (clock.vco) and post-divided fast
* (clock.dot) clock rates. This fast dot clock is fed to the port's IO logic.
* The helpers' return value is the rate of the clock that is fed to the
* display engine's pipe which can be the above fast dot clock rate or a
* divided-down version of it.
*/
/* m1 is reserved as 0 in Pineview, n is a ring counter */
static int pnv_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = clock->m2 + 2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot;
}
static u32 i9xx_dpll_compute_m(struct dpll *dpll)
{
return 5 * (dpll->m1 + 2) + (dpll->m2 + 2);
}
static int i9xx_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = i9xx_dpll_compute_m(clock);
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n + 2 == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n + 2);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot;
}
static int vlv_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = clock->m1 * clock->m2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST(refclk * clock->m, clock->n);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot / 5;
}
int chv_calc_dpll_params(int refclk, struct dpll *clock)
{
clock->m = clock->m1 * clock->m2;
clock->p = clock->p1 * clock->p2;
if (WARN_ON(clock->n == 0 || clock->p == 0))
return 0;
clock->vco = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(refclk, clock->m),
clock->n << 22);
clock->dot = DIV_ROUND_CLOSEST(clock->vco, clock->p);
return clock->dot / 5;
}
#define INTELPllInvalid(s) do { /* DRM_DEBUG(s); */ return false; } while (0)
/*
* Returns whether the given set of divisors are valid for a given refclk with
* the given connectors.
*/
static bool intel_PLL_is_valid(struct drm_i915_private *dev_priv,
const struct intel_limit *limit,
const struct dpll *clock)
{
if (clock->n < limit->n.min || limit->n.max < clock->n)
INTELPllInvalid("n out of range\n");
if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
INTELPllInvalid("p1 out of range\n");
if (clock->m2 < limit->m2.min || limit->m2.max < clock->m2)
INTELPllInvalid("m2 out of range\n");
if (clock->m1 < limit->m1.min || limit->m1.max < clock->m1)
INTELPllInvalid("m1 out of range\n");
if (!IS_PINEVIEW(dev_priv) && !IS_VALLEYVIEW(dev_priv) &&
!IS_CHERRYVIEW(dev_priv) && !IS_GEN9_LP(dev_priv))
if (clock->m1 <= clock->m2)
INTELPllInvalid("m1 <= m2\n");
if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv) &&
!IS_GEN9_LP(dev_priv)) {
if (clock->p < limit->p.min || limit->p.max < clock->p)
INTELPllInvalid("p out of range\n");
if (clock->m < limit->m.min || limit->m.max < clock->m)
INTELPllInvalid("m out of range\n");
}
if (clock->vco < limit->vco.min || limit->vco.max < clock->vco)
INTELPllInvalid("vco out of range\n");
/* XXX: We may need to be checking "Dot clock" depending on the multiplier,
* connector, etc., rather than just a single range.
*/
if (clock->dot < limit->dot.min || limit->dot.max < clock->dot)
INTELPllInvalid("dot out of range\n");
return true;
}
static int
i9xx_select_p2_div(const struct intel_limit *limit,
const struct intel_crtc_state *crtc_state,
int target)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
/*
* For LVDS just rely on its current settings for dual-channel.
* We haven't figured out how to reliably set up different
* single/dual channel state, if we even can.
*/
if (intel_is_dual_link_lvds(dev_priv))
return limit->p2.p2_fast;
else
return limit->p2.p2_slow;
} else {
if (target < limit->p2.dot_limit)
return limit->p2.p2_slow;
else
return limit->p2.p2_fast;
}
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*
* Target and reference clocks are specified in kHz.
*
* If match_clock is provided, then best_clock P divider must match the P
* divider from @match_clock used for LVDS downclocking.
*/
static bool
i9xx_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
struct dpll clock;
int err = target;
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
clock.m1++) {
for (clock.m2 = limit->m2.min;
clock.m2 <= limit->m2.max; clock.m2++) {
if (clock.m2 >= clock.m1)
break;
for (clock.n = limit->n.min;
clock.n <= limit->n.max; clock.n++) {
for (clock.p1 = limit->p1.min;
clock.p1 <= limit->p1.max; clock.p1++) {
int this_err;
i9xx_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(to_i915(dev),
limit,
&clock))
continue;
if (match_clock &&
clock.p != match_clock->p)
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
}
return (err != target);
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*
* Target and reference clocks are specified in kHz.
*
* If match_clock is provided, then best_clock P divider must match the P
* divider from @match_clock used for LVDS downclocking.
*/
static bool
pnv_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
struct dpll clock;
int err = target;
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max;
clock.m1++) {
for (clock.m2 = limit->m2.min;
clock.m2 <= limit->m2.max; clock.m2++) {
for (clock.n = limit->n.min;
clock.n <= limit->n.max; clock.n++) {
for (clock.p1 = limit->p1.min;
clock.p1 <= limit->p1.max; clock.p1++) {
int this_err;
pnv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(to_i915(dev),
limit,
&clock))
continue;
if (match_clock &&
clock.p != match_clock->p)
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
}
return (err != target);
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*
* Target and reference clocks are specified in kHz.
*
* If match_clock is provided, then best_clock P divider must match the P
* divider from @match_clock used for LVDS downclocking.
*/
static bool
g4x_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct drm_device *dev = crtc_state->base.crtc->dev;
struct dpll clock;
int max_n;
bool found = false;
/* approximately equals target * 0.00585 */
int err_most = (target >> 8) + (target >> 9);
memset(best_clock, 0, sizeof(*best_clock));
clock.p2 = i9xx_select_p2_div(limit, crtc_state, target);
max_n = limit->n.max;
/* based on hardware requirement, prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
/* based on hardware requirement, prefere larger m1,m2 */
for (clock.m1 = limit->m1.max;
clock.m1 >= limit->m1.min; clock.m1--) {
for (clock.m2 = limit->m2.max;
clock.m2 >= limit->m2.min; clock.m2--) {
for (clock.p1 = limit->p1.max;
clock.p1 >= limit->p1.min; clock.p1--) {
int this_err;
i9xx_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(to_i915(dev),
limit,
&clock))
continue;
this_err = abs(clock.dot - target);
if (this_err < err_most) {
*best_clock = clock;
err_most = this_err;
max_n = clock.n;
found = true;
}
}
}
}
}
return found;
}
/*
* Check if the calculated PLL configuration is more optimal compared to the
* best configuration and error found so far. Return the calculated error.
*/
static bool vlv_PLL_is_optimal(struct drm_device *dev, int target_freq,
const struct dpll *calculated_clock,
const struct dpll *best_clock,
unsigned int best_error_ppm,
unsigned int *error_ppm)
{
/*
* For CHV ignore the error and consider only the P value.
* Prefer a bigger P value based on HW requirements.
*/
if (IS_CHERRYVIEW(to_i915(dev))) {
*error_ppm = 0;
return calculated_clock->p > best_clock->p;
}
if (WARN_ON_ONCE(!target_freq))
return false;
*error_ppm = div_u64(1000000ULL *
abs(target_freq - calculated_clock->dot),
target_freq);
/*
* Prefer a better P value over a better (smaller) error if the error
* is small. Ensure this preference for future configurations too by
* setting the error to 0.
*/
if (*error_ppm < 100 && calculated_clock->p > best_clock->p) {
*error_ppm = 0;
return true;
}
return *error_ppm + 10 < best_error_ppm;
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*/
static bool
vlv_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct dpll clock;
unsigned int bestppm = 1000000;
/* min update 19.2 MHz */
int max_n = min(limit->n.max, refclk / 19200);
bool found = false;
target *= 5; /* fast clock */
memset(best_clock, 0, sizeof(*best_clock));
/* based on hardware requirement, prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
for (clock.p2 = limit->p2.p2_fast; clock.p2 >= limit->p2.p2_slow;
clock.p2 -= clock.p2 > 10 ? 2 : 1) {
clock.p = clock.p1 * clock.p2;
/* based on hardware requirement, prefer bigger m1,m2 values */
for (clock.m1 = limit->m1.min; clock.m1 <= limit->m1.max; clock.m1++) {
unsigned int ppm;
clock.m2 = DIV_ROUND_CLOSEST(target * clock.p * clock.n,
refclk * clock.m1);
vlv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(to_i915(dev),
limit,
&clock))
continue;
if (!vlv_PLL_is_optimal(dev, target,
&clock,
best_clock,
bestppm, &ppm))
continue;
*best_clock = clock;
bestppm = ppm;
found = true;
}
}
}
}
return found;
}
/*
* Returns a set of divisors for the desired target clock with the given
* refclk, or FALSE. The returned values represent the clock equation:
* reflck * (5 * (m1 + 2) + (m2 + 2)) / (n + 2) / p1 / p2.
*/
static bool
chv_find_best_dpll(const struct intel_limit *limit,
struct intel_crtc_state *crtc_state,
int target, int refclk, struct dpll *match_clock,
struct dpll *best_clock)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
unsigned int best_error_ppm;
struct dpll clock;
u64 m2;
int found = false;
memset(best_clock, 0, sizeof(*best_clock));
best_error_ppm = 1000000;
/*
* Based on hardware doc, the n always set to 1, and m1 always
* set to 2. If requires to support 200Mhz refclk, we need to
* revisit this because n may not 1 anymore.
*/
clock.n = 1, clock.m1 = 2;
target *= 5; /* fast clock */
for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
for (clock.p2 = limit->p2.p2_fast;
clock.p2 >= limit->p2.p2_slow;
clock.p2 -= clock.p2 > 10 ? 2 : 1) {
unsigned int error_ppm;
clock.p = clock.p1 * clock.p2;
m2 = DIV_ROUND_CLOSEST_ULL(mul_u32_u32(target, clock.p * clock.n) << 22,
refclk * clock.m1);
if (m2 > INT_MAX/clock.m1)
continue;
clock.m2 = m2;
chv_calc_dpll_params(refclk, &clock);
if (!intel_PLL_is_valid(to_i915(dev), limit, &clock))
continue;
if (!vlv_PLL_is_optimal(dev, target, &clock, best_clock,
best_error_ppm, &error_ppm))
continue;
*best_clock = clock;
best_error_ppm = error_ppm;
found = true;
}
}
return found;
}
bool bxt_find_best_dpll(struct intel_crtc_state *crtc_state,
struct dpll *best_clock)
{
int refclk = 100000;
const struct intel_limit *limit = &intel_limits_bxt;
return chv_find_best_dpll(limit, crtc_state,
crtc_state->port_clock, refclk,
NULL, best_clock);
}
bool intel_crtc_active(struct intel_crtc *crtc)
{
/* Be paranoid as we can arrive here with only partial
* state retrieved from the hardware during setup.
*
* We can ditch the adjusted_mode.crtc_clock check as soon
* as Haswell has gained clock readout/fastboot support.
*
* We can ditch the crtc->primary->state->fb check as soon as we can
* properly reconstruct framebuffers.
*
* FIXME: The intel_crtc->active here should be switched to
* crtc->state->active once we have proper CRTC states wired up
* for atomic.
*/
return crtc->active && crtc->base.primary->state->fb &&
crtc->config->base.adjusted_mode.crtc_clock;
}
enum transcoder intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
return crtc->config->cpu_transcoder;
}
static bool pipe_scanline_is_moving(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
i915_reg_t reg = PIPEDSL(pipe);
u32 line1, line2;
u32 line_mask;
if (IS_GEN(dev_priv, 2))
line_mask = DSL_LINEMASK_GEN2;
else
line_mask = DSL_LINEMASK_GEN3;
line1 = I915_READ(reg) & line_mask;
msleep(5);
line2 = I915_READ(reg) & line_mask;
return line1 != line2;
}
static void wait_for_pipe_scanline_moving(struct intel_crtc *crtc, bool state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
/* Wait for the display line to settle/start moving */
if (wait_for(pipe_scanline_is_moving(dev_priv, pipe) == state, 100))
DRM_ERROR("pipe %c scanline %s wait timed out\n",
pipe_name(pipe), onoff(state));
}
static void intel_wait_for_pipe_scanline_stopped(struct intel_crtc *crtc)
{
wait_for_pipe_scanline_moving(crtc, false);
}
static void intel_wait_for_pipe_scanline_moving(struct intel_crtc *crtc)
{
wait_for_pipe_scanline_moving(crtc, true);
}
static void
intel_wait_for_pipe_off(const struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (INTEL_GEN(dev_priv) >= 4) {
enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
i915_reg_t reg = PIPECONF(cpu_transcoder);
/* Wait for the Pipe State to go off */
if (intel_de_wait_for_clear(dev_priv, reg,
I965_PIPECONF_ACTIVE, 100))
WARN(1, "pipe_off wait timed out\n");
} else {
intel_wait_for_pipe_scanline_stopped(crtc);
}
}
/* Only for pre-ILK configs */
void assert_pll(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(DPLL(pipe));
cur_state = !!(val & DPLL_VCO_ENABLE);
I915_STATE_WARN(cur_state != state,
"PLL state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
/* XXX: the dsi pll is shared between MIPI DSI ports */
void assert_dsi_pll(struct drm_i915_private *dev_priv, bool state)
{
u32 val;
bool cur_state;
vlv_cck_get(dev_priv);
val = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
vlv_cck_put(dev_priv);
cur_state = val & DSI_PLL_VCO_EN;
I915_STATE_WARN(cur_state != state,
"DSI PLL state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
static void assert_fdi_tx(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
bool cur_state;
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
if (HAS_DDI(dev_priv)) {
/* DDI does not have a specific FDI_TX register */
u32 val = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
cur_state = !!(val & TRANS_DDI_FUNC_ENABLE);
} else {
u32 val = I915_READ(FDI_TX_CTL(pipe));
cur_state = !!(val & FDI_TX_ENABLE);
}
I915_STATE_WARN(cur_state != state,
"FDI TX state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
#define assert_fdi_tx_enabled(d, p) assert_fdi_tx(d, p, true)
#define assert_fdi_tx_disabled(d, p) assert_fdi_tx(d, p, false)
static void assert_fdi_rx(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(FDI_RX_CTL(pipe));
cur_state = !!(val & FDI_RX_ENABLE);
I915_STATE_WARN(cur_state != state,
"FDI RX state assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
#define assert_fdi_rx_enabled(d, p) assert_fdi_rx(d, p, true)
#define assert_fdi_rx_disabled(d, p) assert_fdi_rx(d, p, false)
static void assert_fdi_tx_pll_enabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
/* ILK FDI PLL is always enabled */
if (IS_GEN(dev_priv, 5))
return;
/* On Haswell, DDI ports are responsible for the FDI PLL setup */
if (HAS_DDI(dev_priv))
return;
val = I915_READ(FDI_TX_CTL(pipe));
I915_STATE_WARN(!(val & FDI_TX_PLL_ENABLE), "FDI TX PLL assertion failure, should be active but is disabled\n");
}
void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
u32 val;
bool cur_state;
val = I915_READ(FDI_RX_CTL(pipe));
cur_state = !!(val & FDI_RX_PLL_ENABLE);
I915_STATE_WARN(cur_state != state,
"FDI RX PLL assertion failure (expected %s, current %s)\n",
onoff(state), onoff(cur_state));
}
void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe)
{
i915_reg_t pp_reg;
u32 val;
enum pipe panel_pipe = INVALID_PIPE;
bool locked = true;
if (WARN_ON(HAS_DDI(dev_priv)))
return;
if (HAS_PCH_SPLIT(dev_priv)) {
u32 port_sel;
pp_reg = PP_CONTROL(0);
port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
switch (port_sel) {
case PANEL_PORT_SELECT_LVDS:
intel_lvds_port_enabled(dev_priv, PCH_LVDS, &panel_pipe);
break;
case PANEL_PORT_SELECT_DPA:
intel_dp_port_enabled(dev_priv, DP_A, PORT_A, &panel_pipe);
break;
case PANEL_PORT_SELECT_DPC:
intel_dp_port_enabled(dev_priv, PCH_DP_C, PORT_C, &panel_pipe);
break;
case PANEL_PORT_SELECT_DPD:
intel_dp_port_enabled(dev_priv, PCH_DP_D, PORT_D, &panel_pipe);
break;
default:
MISSING_CASE(port_sel);
break;
}
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
/* presumably write lock depends on pipe, not port select */
pp_reg = PP_CONTROL(pipe);
panel_pipe = pipe;
} else {
u32 port_sel;
pp_reg = PP_CONTROL(0);
port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK;
WARN_ON(port_sel != PANEL_PORT_SELECT_LVDS);
intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe);
}
val = I915_READ(pp_reg);
if (!(val & PANEL_POWER_ON) ||
((val & PANEL_UNLOCK_MASK) == PANEL_UNLOCK_REGS))
locked = false;
I915_STATE_WARN(panel_pipe == pipe && locked,
"panel assertion failure, pipe %c regs locked\n",
pipe_name(pipe));
}
void assert_pipe(struct drm_i915_private *dev_priv,
enum pipe pipe, bool state)
{
bool cur_state;
enum transcoder cpu_transcoder = intel_pipe_to_cpu_transcoder(dev_priv,
pipe);
enum intel_display_power_domain power_domain;
intel_wakeref_t wakeref;
/* we keep both pipes enabled on 830 */
if (IS_I830(dev_priv))
state = true;
power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (wakeref) {
u32 val = I915_READ(PIPECONF(cpu_transcoder));
cur_state = !!(val & PIPECONF_ENABLE);
intel_display_power_put(dev_priv, power_domain, wakeref);
} else {
cur_state = false;
}
I915_STATE_WARN(cur_state != state,
"pipe %c assertion failure (expected %s, current %s)\n",
pipe_name(pipe), onoff(state), onoff(cur_state));
}
static void assert_plane(struct intel_plane *plane, bool state)
{
enum pipe pipe;
bool cur_state;
cur_state = plane->get_hw_state(plane, &pipe);
I915_STATE_WARN(cur_state != state,
"%s assertion failure (expected %s, current %s)\n",
plane->base.name, onoff(state), onoff(cur_state));
}
#define assert_plane_enabled(p) assert_plane(p, true)
#define assert_plane_disabled(p) assert_plane(p, false)
static void assert_planes_disabled(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_plane *plane;
for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane)
assert_plane_disabled(plane);
}
static void assert_vblank_disabled(struct drm_crtc *crtc)
{
if (I915_STATE_WARN_ON(drm_crtc_vblank_get(crtc) == 0))
drm_crtc_vblank_put(crtc);
}
void assert_pch_transcoder_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
u32 val;
bool enabled;
val = I915_READ(PCH_TRANSCONF(pipe));
enabled = !!(val & TRANS_ENABLE);
I915_STATE_WARN(enabled,
"transcoder assertion failed, should be off on pipe %c but is still active\n",
pipe_name(pipe));
}
static void assert_pch_dp_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe, enum port port,
i915_reg_t dp_reg)
{
enum pipe port_pipe;
bool state;
state = intel_dp_port_enabled(dev_priv, dp_reg, port, &port_pipe);
I915_STATE_WARN(state && port_pipe == pipe,
"PCH DP %c enabled on transcoder %c, should be disabled\n",
port_name(port), pipe_name(pipe));
I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && !state && port_pipe == PIPE_B,
"IBX PCH DP %c still using transcoder B\n",
port_name(port));
}
static void assert_pch_hdmi_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe, enum port port,
i915_reg_t hdmi_reg)
{
enum pipe port_pipe;
bool state;
state = intel_sdvo_port_enabled(dev_priv, hdmi_reg, &port_pipe);
I915_STATE_WARN(state && port_pipe == pipe,
"PCH HDMI %c enabled on transcoder %c, should be disabled\n",
port_name(port), pipe_name(pipe));
I915_STATE_WARN(HAS_PCH_IBX(dev_priv) && !state && port_pipe == PIPE_B,
"IBX PCH HDMI %c still using transcoder B\n",
port_name(port));
}
static void assert_pch_ports_disabled(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
enum pipe port_pipe;
assert_pch_dp_disabled(dev_priv, pipe, PORT_B, PCH_DP_B);
assert_pch_dp_disabled(dev_priv, pipe, PORT_C, PCH_DP_C);
assert_pch_dp_disabled(dev_priv, pipe, PORT_D, PCH_DP_D);
I915_STATE_WARN(intel_crt_port_enabled(dev_priv, PCH_ADPA, &port_pipe) &&
port_pipe == pipe,
"PCH VGA enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
I915_STATE_WARN(intel_lvds_port_enabled(dev_priv, PCH_LVDS, &port_pipe) &&
port_pipe == pipe,
"PCH LVDS enabled on transcoder %c, should be disabled\n",
pipe_name(pipe));
/* PCH SDVOB multiplex with HDMIB */
assert_pch_hdmi_disabled(dev_priv, pipe, PORT_B, PCH_HDMIB);
assert_pch_hdmi_disabled(dev_priv, pipe, PORT_C, PCH_HDMIC);
assert_pch_hdmi_disabled(dev_priv, pipe, PORT_D, PCH_HDMID);
}
static void _vlv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
POSTING_READ(DPLL(pipe));
udelay(150);
if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
DRM_ERROR("DPLL %d failed to lock\n", pipe);
}
static void vlv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
assert_pipe_disabled(dev_priv, pipe);
/* PLL is protected by panel, make sure we can write it */
assert_panel_unlocked(dev_priv, pipe);
if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
_vlv_enable_pll(crtc, pipe_config);
I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(pipe));
}
static void _chv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 tmp;
vlv_dpio_get(dev_priv);
/* Enable back the 10bit clock to display controller */
tmp = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
tmp |= DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), tmp);
vlv_dpio_put(dev_priv);
/*
* Need to wait > 100ns between dclkp clock enable bit and PLL enable.
*/
udelay(1);
/* Enable PLL */
I915_WRITE(DPLL(pipe), pipe_config->dpll_hw_state.dpll);
/* Check PLL is locked */
if (intel_de_wait_for_set(dev_priv, DPLL(pipe), DPLL_LOCK_VLV, 1))
DRM_ERROR("PLL %d failed to lock\n", pipe);
}
static void chv_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
assert_pipe_disabled(dev_priv, pipe);
/* PLL is protected by panel, make sure we can write it */
assert_panel_unlocked(dev_priv, pipe);
if (pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE)
_chv_enable_pll(crtc, pipe_config);
if (pipe != PIPE_A) {
/*
* WaPixelRepeatModeFixForC0:chv
*
* DPLLCMD is AWOL. Use chicken bits to propagate
* the value from DPLLBMD to either pipe B or C.
*/
I915_WRITE(CBR4_VLV, CBR_DPLLBMD_PIPE(pipe));
I915_WRITE(DPLL_MD(PIPE_B), pipe_config->dpll_hw_state.dpll_md);
I915_WRITE(CBR4_VLV, 0);
dev_priv->chv_dpll_md[pipe] = pipe_config->dpll_hw_state.dpll_md;
/*
* DPLLB VGA mode also seems to cause problems.
* We should always have it disabled.
*/
WARN_ON((I915_READ(DPLL(PIPE_B)) & DPLL_VGA_MODE_DIS) == 0);
} else {
I915_WRITE(DPLL_MD(pipe), pipe_config->dpll_hw_state.dpll_md);
POSTING_READ(DPLL_MD(pipe));
}
}
static bool i9xx_has_pps(struct drm_i915_private *dev_priv)
{
if (IS_I830(dev_priv))
return false;
return IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
}
static void i9xx_enable_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
i915_reg_t reg = DPLL(crtc->pipe);
u32 dpll = crtc_state->dpll_hw_state.dpll;
int i;
assert_pipe_disabled(dev_priv, crtc->pipe);
/* PLL is protected by panel, make sure we can write it */
if (i9xx_has_pps(dev_priv))
assert_panel_unlocked(dev_priv, crtc->pipe);
/*
* Apparently we need to have VGA mode enabled prior to changing
* the P1/P2 dividers. Otherwise the DPLL will keep using the old
* dividers, even though the register value does change.
*/
I915_WRITE(reg, dpll & ~DPLL_VGA_MODE_DIS);
I915_WRITE(reg, dpll);
/* Wait for the clocks to stabilize. */
POSTING_READ(reg);
udelay(150);
if (INTEL_GEN(dev_priv) >= 4) {
I915_WRITE(DPLL_MD(crtc->pipe),
crtc_state->dpll_hw_state.dpll_md);
} else {
/* The pixel multiplier can only be updated once the
* DPLL is enabled and the clocks are stable.
*
* So write it again.
*/
I915_WRITE(reg, dpll);
}
/* We do this three times for luck */
for (i = 0; i < 3; i++) {
I915_WRITE(reg, dpll);
POSTING_READ(reg);
udelay(150); /* wait for warmup */
}
}
static void i9xx_disable_pll(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
/* Don't disable pipe or pipe PLLs if needed */
if (IS_I830(dev_priv))
return;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
POSTING_READ(DPLL(pipe));
}
static void vlv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
{
u32 val;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
val = DPLL_INTEGRATED_REF_CLK_VLV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (pipe != PIPE_A)
val |= DPLL_INTEGRATED_CRI_CLK_VLV;
I915_WRITE(DPLL(pipe), val);
POSTING_READ(DPLL(pipe));
}
static void chv_disable_pll(struct drm_i915_private *dev_priv, enum pipe pipe)
{
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 val;
/* Make sure the pipe isn't still relying on us */
assert_pipe_disabled(dev_priv, pipe);
val = DPLL_SSC_REF_CLK_CHV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (pipe != PIPE_A)
val |= DPLL_INTEGRATED_CRI_CLK_VLV;
I915_WRITE(DPLL(pipe), val);
POSTING_READ(DPLL(pipe));
vlv_dpio_get(dev_priv);
/* Disable 10bit clock to display controller */
val = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port));
val &= ~DPIO_DCLKP_EN;
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port), val);
vlv_dpio_put(dev_priv);
}
void vlv_wait_port_ready(struct drm_i915_private *dev_priv,
struct intel_digital_port *dport,
unsigned int expected_mask)
{
u32 port_mask;
i915_reg_t dpll_reg;
switch (dport->base.port) {
case PORT_B:
port_mask = DPLL_PORTB_READY_MASK;
dpll_reg = DPLL(0);
break;
case PORT_C:
port_mask = DPLL_PORTC_READY_MASK;
dpll_reg = DPLL(0);
expected_mask <<= 4;
break;
case PORT_D:
port_mask = DPLL_PORTD_READY_MASK;
dpll_reg = DPIO_PHY_STATUS;
break;
default:
BUG();
}
if (intel_de_wait_for_register(dev_priv, dpll_reg,
port_mask, expected_mask, 1000))
WARN(1, "timed out waiting for [ENCODER:%d:%s] port ready: got 0x%x, expected 0x%x\n",
dport->base.base.base.id, dport->base.base.name,
I915_READ(dpll_reg) & port_mask, expected_mask);
}
static void ironlake_enable_pch_transcoder(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 val, pipeconf_val;
/* Make sure PCH DPLL is enabled */
assert_shared_dpll_enabled(dev_priv, crtc_state->shared_dpll);
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, pipe);
assert_fdi_rx_enabled(dev_priv, pipe);
if (HAS_PCH_CPT(dev_priv)) {
/* Workaround: Set the timing override bit before enabling the
* pch transcoder. */
reg = TRANS_CHICKEN2(pipe);
val = I915_READ(reg);
val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(reg, val);
}
reg = PCH_TRANSCONF(pipe);
val = I915_READ(reg);
pipeconf_val = I915_READ(PIPECONF(pipe));
if (HAS_PCH_IBX(dev_priv)) {
/*
* Make the BPC in transcoder be consistent with
* that in pipeconf reg. For HDMI we must use 8bpc
* here for both 8bpc and 12bpc.
*/
val &= ~PIPECONF_BPC_MASK;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
val |= PIPECONF_8BPC;
else
val |= pipeconf_val & PIPECONF_BPC_MASK;
}
val &= ~TRANS_INTERLACE_MASK;
if ((pipeconf_val & PIPECONF_INTERLACE_MASK) == PIPECONF_INTERLACED_ILK) {
if (HAS_PCH_IBX(dev_priv) &&
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
val |= TRANS_LEGACY_INTERLACED_ILK;
else
val |= TRANS_INTERLACED;
} else {
val |= TRANS_PROGRESSIVE;
}
I915_WRITE(reg, val | TRANS_ENABLE);
if (intel_de_wait_for_set(dev_priv, reg, TRANS_STATE_ENABLE, 100))
DRM_ERROR("failed to enable transcoder %c\n", pipe_name(pipe));
}
static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
enum transcoder cpu_transcoder)
{
u32 val, pipeconf_val;
/* FDI must be feeding us bits for PCH ports */
assert_fdi_tx_enabled(dev_priv, (enum pipe) cpu_transcoder);
assert_fdi_rx_enabled(dev_priv, PIPE_A);
/* Workaround: set timing override bit. */
val = I915_READ(TRANS_CHICKEN2(PIPE_A));
val |= TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
val = TRANS_ENABLE;
pipeconf_val = I915_READ(PIPECONF(cpu_transcoder));
if ((pipeconf_val & PIPECONF_INTERLACE_MASK_HSW) ==
PIPECONF_INTERLACED_ILK)
val |= TRANS_INTERLACED;
else
val |= TRANS_PROGRESSIVE;
I915_WRITE(LPT_TRANSCONF, val);
if (intel_de_wait_for_set(dev_priv, LPT_TRANSCONF,
TRANS_STATE_ENABLE, 100))
DRM_ERROR("Failed to enable PCH transcoder\n");
}
static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
i915_reg_t reg;
u32 val;
/* FDI relies on the transcoder */
assert_fdi_tx_disabled(dev_priv, pipe);
assert_fdi_rx_disabled(dev_priv, pipe);
/* Ports must be off as well */
assert_pch_ports_disabled(dev_priv, pipe);
reg = PCH_TRANSCONF(pipe);
val = I915_READ(reg);
val &= ~TRANS_ENABLE;
I915_WRITE(reg, val);
/* wait for PCH transcoder off, transcoder state */
if (intel_de_wait_for_clear(dev_priv, reg, TRANS_STATE_ENABLE, 50))
DRM_ERROR("failed to disable transcoder %c\n", pipe_name(pipe));
if (HAS_PCH_CPT(dev_priv)) {
/* Workaround: Clear the timing override chicken bit again. */
reg = TRANS_CHICKEN2(pipe);
val = I915_READ(reg);
val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(reg, val);
}
}
void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
{
u32 val;
val = I915_READ(LPT_TRANSCONF);
val &= ~TRANS_ENABLE;
I915_WRITE(LPT_TRANSCONF, val);
/* wait for PCH transcoder off, transcoder state */
if (intel_de_wait_for_clear(dev_priv, LPT_TRANSCONF,
TRANS_STATE_ENABLE, 50))
DRM_ERROR("Failed to disable PCH transcoder\n");
/* Workaround: clear timing override bit. */
val = I915_READ(TRANS_CHICKEN2(PIPE_A));
val &= ~TRANS_CHICKEN2_TIMING_OVERRIDE;
I915_WRITE(TRANS_CHICKEN2(PIPE_A), val);
}
enum pipe intel_crtc_pch_transcoder(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (HAS_PCH_LPT(dev_priv))
return PIPE_A;
else
return crtc->pipe;
}
static u32 intel_crtc_max_vblank_count(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
/*
* On i965gm the hardware frame counter reads
* zero when the TV encoder is enabled :(
*/
if (IS_I965GM(dev_priv) &&
(crtc_state->output_types & BIT(INTEL_OUTPUT_TVOUT)))
return 0;
if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
return 0xffffffff; /* full 32 bit counter */
else if (INTEL_GEN(dev_priv) >= 3)
return 0xffffff; /* only 24 bits of frame count */
else
return 0; /* Gen2 doesn't have a hardware frame counter */
}
static void intel_crtc_vblank_on(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
drm_crtc_set_max_vblank_count(&crtc->base,
intel_crtc_max_vblank_count(crtc_state));
drm_crtc_vblank_on(&crtc->base);
}
static void intel_enable_pipe(const struct intel_crtc_state *new_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = new_crtc_state->cpu_transcoder;
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 val;
DRM_DEBUG_KMS("enabling pipe %c\n", pipe_name(pipe));
assert_planes_disabled(crtc);
/*
* A pipe without a PLL won't actually be able to drive bits from
* a plane. On ILK+ the pipe PLLs are integrated, so we don't
* need the check.
*/
if (HAS_GMCH(dev_priv)) {
if (intel_crtc_has_type(new_crtc_state, INTEL_OUTPUT_DSI))
assert_dsi_pll_enabled(dev_priv);
else
assert_pll_enabled(dev_priv, pipe);
} else {
if (new_crtc_state->has_pch_encoder) {
/* if driving the PCH, we need FDI enabled */
assert_fdi_rx_pll_enabled(dev_priv,
intel_crtc_pch_transcoder(crtc));
assert_fdi_tx_pll_enabled(dev_priv,
(enum pipe) cpu_transcoder);
}
/* FIXME: assert CPU port conditions for SNB+ */
}
trace_intel_pipe_enable(crtc);
reg = PIPECONF(cpu_transcoder);
val = I915_READ(reg);
if (val & PIPECONF_ENABLE) {
/* we keep both pipes enabled on 830 */
WARN_ON(!IS_I830(dev_priv));
return;
}
I915_WRITE(reg, val | PIPECONF_ENABLE);
POSTING_READ(reg);
/*
* Until the pipe starts PIPEDSL reads will return a stale value,
* which causes an apparent vblank timestamp jump when PIPEDSL
* resets to its proper value. That also messes up the frame count
* when it's derived from the timestamps. So let's wait for the
* pipe to start properly before we call drm_crtc_vblank_on()
*/
if (intel_crtc_max_vblank_count(new_crtc_state) == 0)
intel_wait_for_pipe_scanline_moving(crtc);
}
static void intel_disable_pipe(const struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 val;
DRM_DEBUG_KMS("disabling pipe %c\n", pipe_name(pipe));
/*
* Make sure planes won't keep trying to pump pixels to us,
* or we might hang the display.
*/
assert_planes_disabled(crtc);
trace_intel_pipe_disable(crtc);
reg = PIPECONF(cpu_transcoder);
val = I915_READ(reg);
if ((val & PIPECONF_ENABLE) == 0)
return;
/*
* Double wide has implications for planes
* so best keep it disabled when not needed.
*/
if (old_crtc_state->double_wide)
val &= ~PIPECONF_DOUBLE_WIDE;
/* Don't disable pipe or pipe PLLs if needed */
if (!IS_I830(dev_priv))
val &= ~PIPECONF_ENABLE;
I915_WRITE(reg, val);
if ((val & PIPECONF_ENABLE) == 0)
intel_wait_for_pipe_off(old_crtc_state);
}
static unsigned int intel_tile_size(const struct drm_i915_private *dev_priv)
{
return IS_GEN(dev_priv, 2) ? 2048 : 4096;
}
static unsigned int
intel_tile_width_bytes(const struct drm_framebuffer *fb, int color_plane)
{
struct drm_i915_private *dev_priv = to_i915(fb->dev);
unsigned int cpp = fb->format->cpp[color_plane];
switch (fb->modifier) {
case DRM_FORMAT_MOD_LINEAR:
return intel_tile_size(dev_priv);
case I915_FORMAT_MOD_X_TILED:
if (IS_GEN(dev_priv, 2))
return 128;
else
return 512;
case I915_FORMAT_MOD_Y_TILED_CCS:
if (color_plane == 1)
return 128;
/* fall through */
case I915_FORMAT_MOD_Y_TILED:
if (IS_GEN(dev_priv, 2) || HAS_128_BYTE_Y_TILING(dev_priv))
return 128;
else
return 512;
case I915_FORMAT_MOD_Yf_TILED_CCS:
if (color_plane == 1)
return 128;
/* fall through */
case I915_FORMAT_MOD_Yf_TILED:
switch (cpp) {
case 1:
return 64;
case 2:
case 4:
return 128;
case 8:
case 16:
return 256;
default:
MISSING_CASE(cpp);
return cpp;
}
break;
default:
MISSING_CASE(fb->modifier);
return cpp;
}
}
static unsigned int
intel_tile_height(const struct drm_framebuffer *fb, int color_plane)
{
return intel_tile_size(to_i915(fb->dev)) /
intel_tile_width_bytes(fb, color_plane);
}
/* Return the tile dimensions in pixel units */
static void intel_tile_dims(const struct drm_framebuffer *fb, int color_plane,
unsigned int *tile_width,
unsigned int *tile_height)
{
unsigned int tile_width_bytes = intel_tile_width_bytes(fb, color_plane);
unsigned int cpp = fb->format->cpp[color_plane];
*tile_width = tile_width_bytes / cpp;
*tile_height = intel_tile_size(to_i915(fb->dev)) / tile_width_bytes;
}
unsigned int
intel_fb_align_height(const struct drm_framebuffer *fb,
int color_plane, unsigned int height)
{
unsigned int tile_height = intel_tile_height(fb, color_plane);
return ALIGN(height, tile_height);
}
unsigned int intel_rotation_info_size(const struct intel_rotation_info *rot_info)
{
unsigned int size = 0;
int i;
for (i = 0 ; i < ARRAY_SIZE(rot_info->plane); i++)
size += rot_info->plane[i].width * rot_info->plane[i].height;
return size;
}
unsigned int intel_remapped_info_size(const struct intel_remapped_info *rem_info)
{
unsigned int size = 0;
int i;
for (i = 0 ; i < ARRAY_SIZE(rem_info->plane); i++)
size += rem_info->plane[i].width * rem_info->plane[i].height;
return size;
}
static void
intel_fill_fb_ggtt_view(struct i915_ggtt_view *view,
const struct drm_framebuffer *fb,
unsigned int rotation)
{
view->type = I915_GGTT_VIEW_NORMAL;
if (drm_rotation_90_or_270(rotation)) {
view->type = I915_GGTT_VIEW_ROTATED;
view->rotated = to_intel_framebuffer(fb)->rot_info;
}
}
static unsigned int intel_cursor_alignment(const struct drm_i915_private *dev_priv)
{
if (IS_I830(dev_priv))
return 16 * 1024;
else if (IS_I85X(dev_priv))
return 256;
else if (IS_I845G(dev_priv) || IS_I865G(dev_priv))
return 32;
else
return 4 * 1024;
}
static unsigned int intel_linear_alignment(const struct drm_i915_private *dev_priv)
{
if (INTEL_GEN(dev_priv) >= 9)
return 256 * 1024;
else if (IS_I965G(dev_priv) || IS_I965GM(dev_priv) ||
IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
return 128 * 1024;
else if (INTEL_GEN(dev_priv) >= 4)
return 4 * 1024;
else
return 0;
}
static unsigned int intel_surf_alignment(const struct drm_framebuffer *fb,
int color_plane)
{
struct drm_i915_private *dev_priv = to_i915(fb->dev);
/* AUX_DIST needs only 4K alignment */
if (color_plane == 1)
return 4096;
switch (fb->modifier) {
case DRM_FORMAT_MOD_LINEAR:
return intel_linear_alignment(dev_priv);
case I915_FORMAT_MOD_X_TILED:
if (INTEL_GEN(dev_priv) >= 9)
return 256 * 1024;
return 0;
case I915_FORMAT_MOD_Y_TILED_CCS:
case I915_FORMAT_MOD_Yf_TILED_CCS:
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED:
return 1 * 1024 * 1024;
default:
MISSING_CASE(fb->modifier);
return 0;
}
}
static bool intel_plane_uses_fence(const struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
return INTEL_GEN(dev_priv) < 4 ||
(plane->has_fbc &&
plane_state->view.type == I915_GGTT_VIEW_NORMAL);
}
struct i915_vma *
intel_pin_and_fence_fb_obj(struct drm_framebuffer *fb,
const struct i915_ggtt_view *view,
bool uses_fence,
unsigned long *out_flags)
{
struct drm_device *dev = fb->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
intel_wakeref_t wakeref;
struct i915_vma *vma;
unsigned int pinctl;
u32 alignment;
if (WARN_ON(!i915_gem_object_is_framebuffer(obj)))
return ERR_PTR(-EINVAL);
alignment = intel_surf_alignment(fb, 0);
/* Note that the w/a also requires 64 PTE of padding following the
* bo. We currently fill all unused PTE with the shadow page and so
* we should always have valid PTE following the scanout preventing
* the VT-d warning.
*/
if (intel_scanout_needs_vtd_wa(dev_priv) && alignment < 256 * 1024)
alignment = 256 * 1024;
/*
* Global gtt pte registers are special registers which actually forward
* writes to a chunk of system memory. Which means that there is no risk
* that the register values disappear as soon as we call
* intel_runtime_pm_put(), so it is correct to wrap only the
* pin/unpin/fence and not more.
*/
wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
i915_gem_object_lock(obj);
atomic_inc(&dev_priv->gpu_error.pending_fb_pin);
pinctl = 0;
/* Valleyview is definitely limited to scanning out the first
* 512MiB. Lets presume this behaviour was inherited from the
* g4x display engine and that all earlier gen are similarly
* limited. Testing suggests that it is a little more
* complicated than this. For example, Cherryview appears quite
* happy to scanout from anywhere within its global aperture.
*/
if (HAS_GMCH(dev_priv))
pinctl |= PIN_MAPPABLE;
vma = i915_gem_object_pin_to_display_plane(obj,
alignment, view, pinctl);
if (IS_ERR(vma))
goto err;
if (uses_fence && i915_vma_is_map_and_fenceable(vma)) {
int ret;
/* Install a fence for tiled scan-out. Pre-i965 always needs a
* fence, whereas 965+ only requires a fence if using
* framebuffer compression. For simplicity, we always, when
* possible, install a fence as the cost is not that onerous.
*
* If we fail to fence the tiled scanout, then either the
* modeset will reject the change (which is highly unlikely as
* the affected systems, all but one, do not have unmappable
* space) or we will not be able to enable full powersaving
* techniques (also likely not to apply due to various limits
* FBC and the like impose on the size of the buffer, which
* presumably we violated anyway with this unmappable buffer).
* Anyway, it is presumably better to stumble onwards with
* something and try to run the system in a "less than optimal"
* mode that matches the user configuration.
*/
ret = i915_vma_pin_fence(vma);
if (ret != 0 && INTEL_GEN(dev_priv) < 4) {
i915_gem_object_unpin_from_display_plane(vma);
vma = ERR_PTR(ret);
goto err;
}
if (ret == 0 && vma->fence)
*out_flags |= PLANE_HAS_FENCE;
}
i915_vma_get(vma);
err:
atomic_dec(&dev_priv->gpu_error.pending_fb_pin);
i915_gem_object_unlock(obj);
intel_runtime_pm_put(&dev_priv->runtime_pm, wakeref);
return vma;
}
void intel_unpin_fb_vma(struct i915_vma *vma, unsigned long flags)
{
i915_gem_object_lock(vma->obj);
if (flags & PLANE_HAS_FENCE)
i915_vma_unpin_fence(vma);
i915_gem_object_unpin_from_display_plane(vma);
i915_gem_object_unlock(vma->obj);
i915_vma_put(vma);
}
static int intel_fb_pitch(const struct drm_framebuffer *fb, int color_plane,
unsigned int rotation)
{
if (drm_rotation_90_or_270(rotation))
return to_intel_framebuffer(fb)->rotated[color_plane].pitch;
else
return fb->pitches[color_plane];
}
/*
* Convert the x/y offsets into a linear offset.
* Only valid with 0/180 degree rotation, which is fine since linear
* offset is only used with linear buffers on pre-hsw and tiled buffers
* with gen2/3, and 90/270 degree rotations isn't supported on any of them.
*/
u32 intel_fb_xy_to_linear(int x, int y,
const struct intel_plane_state *state,
int color_plane)
{
const struct drm_framebuffer *fb = state->base.fb;
unsigned int cpp = fb->format->cpp[color_plane];
unsigned int pitch = state->color_plane[color_plane].stride;
return y * pitch + x * cpp;
}
/*
* Add the x/y offsets derived from fb->offsets[] to the user
* specified plane src x/y offsets. The resulting x/y offsets
* specify the start of scanout from the beginning of the gtt mapping.
*/
void intel_add_fb_offsets(int *x, int *y,
const struct intel_plane_state *state,
int color_plane)
{
*x += state->color_plane[color_plane].x;
*y += state->color_plane[color_plane].y;
}
static u32 intel_adjust_tile_offset(int *x, int *y,
unsigned int tile_width,
unsigned int tile_height,
unsigned int tile_size,
unsigned int pitch_tiles,
u32 old_offset,
u32 new_offset)
{
unsigned int pitch_pixels = pitch_tiles * tile_width;
unsigned int tiles;
WARN_ON(old_offset & (tile_size - 1));
WARN_ON(new_offset & (tile_size - 1));
WARN_ON(new_offset > old_offset);
tiles = (old_offset - new_offset) / tile_size;
*y += tiles / pitch_tiles * tile_height;
*x += tiles % pitch_tiles * tile_width;
/* minimize x in case it got needlessly big */
*y += *x / pitch_pixels * tile_height;
*x %= pitch_pixels;
return new_offset;
}
static bool is_surface_linear(u64 modifier, int color_plane)
{
return modifier == DRM_FORMAT_MOD_LINEAR;
}
static u32 intel_adjust_aligned_offset(int *x, int *y,
const struct drm_framebuffer *fb,
int color_plane,
unsigned int rotation,
unsigned int pitch,
u32 old_offset, u32 new_offset)
{
struct drm_i915_private *dev_priv = to_i915(fb->dev);
unsigned int cpp = fb->format->cpp[color_plane];
WARN_ON(new_offset > old_offset);
if (!is_surface_linear(fb->modifier, color_plane)) {
unsigned int tile_size, tile_width, tile_height;
unsigned int pitch_tiles;
tile_size = intel_tile_size(dev_priv);
intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
if (drm_rotation_90_or_270(rotation)) {
pitch_tiles = pitch / tile_height;
swap(tile_width, tile_height);
} else {
pitch_tiles = pitch / (tile_width * cpp);
}
intel_adjust_tile_offset(x, y, tile_width, tile_height,
tile_size, pitch_tiles,
old_offset, new_offset);
} else {
old_offset += *y * pitch + *x * cpp;
*y = (old_offset - new_offset) / pitch;
*x = ((old_offset - new_offset) - *y * pitch) / cpp;
}
return new_offset;
}
/*
* Adjust the tile offset by moving the difference into
* the x/y offsets.
*/
static u32 intel_plane_adjust_aligned_offset(int *x, int *y,
const struct intel_plane_state *state,
int color_plane,
u32 old_offset, u32 new_offset)
{
return intel_adjust_aligned_offset(x, y, state->base.fb, color_plane,
state->base.rotation,
state->color_plane[color_plane].stride,
old_offset, new_offset);
}
/*
* Computes the aligned offset to the base tile and adjusts
* x, y. bytes per pixel is assumed to be a power-of-two.
*
* In the 90/270 rotated case, x and y are assumed
* to be already rotated to match the rotated GTT view, and
* pitch is the tile_height aligned framebuffer height.
*
* This function is used when computing the derived information
* under intel_framebuffer, so using any of that information
* here is not allowed. Anything under drm_framebuffer can be
* used. This is why the user has to pass in the pitch since it
* is specified in the rotated orientation.
*/
static u32 intel_compute_aligned_offset(struct drm_i915_private *dev_priv,
int *x, int *y,
const struct drm_framebuffer *fb,
int color_plane,
unsigned int pitch,
unsigned int rotation,
u32 alignment)
{
unsigned int cpp = fb->format->cpp[color_plane];
u32 offset, offset_aligned;
if (alignment)
alignment--;
if (!is_surface_linear(fb->modifier, color_plane)) {
unsigned int tile_size, tile_width, tile_height;
unsigned int tile_rows, tiles, pitch_tiles;
tile_size = intel_tile_size(dev_priv);
intel_tile_dims(fb, color_plane, &tile_width, &tile_height);
if (drm_rotation_90_or_270(rotation)) {
pitch_tiles = pitch / tile_height;
swap(tile_width, tile_height);
} else {
pitch_tiles = pitch / (tile_width * cpp);
}
tile_rows = *y / tile_height;
*y %= tile_height;
tiles = *x / tile_width;
*x %= tile_width;
offset = (tile_rows * pitch_tiles + tiles) * tile_size;
offset_aligned = offset & ~alignment;
intel_adjust_tile_offset(x, y, tile_width, tile_height,
tile_size, pitch_tiles,
offset, offset_aligned);
} else {
offset = *y * pitch + *x * cpp;
offset_aligned = offset & ~alignment;
*y = (offset & alignment) / pitch;
*x = ((offset & alignment) - *y * pitch) / cpp;
}
return offset_aligned;
}
static u32 intel_plane_compute_aligned_offset(int *x, int *y,
const struct intel_plane_state *state,
int color_plane)
{
struct intel_plane *intel_plane = to_intel_plane(state->base.plane);
struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
const struct drm_framebuffer *fb = state->base.fb;
unsigned int rotation = state->base.rotation;
int pitch = state->color_plane[color_plane].stride;
u32 alignment;
if (intel_plane->id == PLANE_CURSOR)
alignment = intel_cursor_alignment(dev_priv);
else
alignment = intel_surf_alignment(fb, color_plane);
return intel_compute_aligned_offset(dev_priv, x, y, fb, color_plane,
pitch, rotation, alignment);
}
/* Convert the fb->offset[] into x/y offsets */
static int intel_fb_offset_to_xy(int *x, int *y,
const struct drm_framebuffer *fb,
int color_plane)
{
struct drm_i915_private *dev_priv = to_i915(fb->dev);
unsigned int height;
if (fb->modifier != DRM_FORMAT_MOD_LINEAR &&
fb->offsets[color_plane] % intel_tile_size(dev_priv)) {
DRM_DEBUG_KMS("Misaligned offset 0x%08x for color plane %d\n",
fb->offsets[color_plane], color_plane);
return -EINVAL;
}
height = drm_framebuffer_plane_height(fb->height, fb, color_plane);
height = ALIGN(height, intel_tile_height(fb, color_plane));
/* Catch potential overflows early */
if (add_overflows_t(u32, mul_u32_u32(height, fb->pitches[color_plane]),
fb->offsets[color_plane])) {
DRM_DEBUG_KMS("Bad offset 0x%08x or pitch %d for color plane %d\n",
fb->offsets[color_plane], fb->pitches[color_plane],
color_plane);
return -ERANGE;
}
*x = 0;
*y = 0;
intel_adjust_aligned_offset(x, y,
fb, color_plane, DRM_MODE_ROTATE_0,
fb->pitches[color_plane],
fb->offsets[color_plane], 0);
return 0;
}
static unsigned int intel_fb_modifier_to_tiling(u64 fb_modifier)
{
switch (fb_modifier) {
case I915_FORMAT_MOD_X_TILED:
return I915_TILING_X;
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Y_TILED_CCS:
return I915_TILING_Y;
default:
return I915_TILING_NONE;
}
}
/*
* From the Sky Lake PRM:
* "The Color Control Surface (CCS) contains the compression status of
* the cache-line pairs. The compression state of the cache-line pair
* is specified by 2 bits in the CCS. Each CCS cache-line represents
* an area on the main surface of 16 x16 sets of 128 byte Y-tiled
* cache-line-pairs. CCS is always Y tiled."
*
* Since cache line pairs refers to horizontally adjacent cache lines,
* each cache line in the CCS corresponds to an area of 32x16 cache
* lines on the main surface. Since each pixel is 4 bytes, this gives
* us a ratio of one byte in the CCS for each 8x16 pixels in the
* main surface.
*/
static const struct drm_format_info ccs_formats[] = {
{ .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
.cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
{ .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
.cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
{ .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
.cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
{ .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
.cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
};
static const struct drm_format_info *
lookup_format_info(const struct drm_format_info formats[],
int num_formats, u32 format)
{
int i;
for (i = 0; i < num_formats; i++) {
if (formats[i].format == format)
return &formats[i];
}
return NULL;
}
static const struct drm_format_info *
intel_get_format_info(const struct drm_mode_fb_cmd2 *cmd)
{
switch (cmd->modifier[0]) {
case I915_FORMAT_MOD_Y_TILED_CCS:
case I915_FORMAT_MOD_Yf_TILED_CCS:
return lookup_format_info(ccs_formats,
ARRAY_SIZE(ccs_formats),
cmd->pixel_format);
default:
return NULL;
}
}
bool is_ccs_modifier(u64 modifier)
{
return modifier == I915_FORMAT_MOD_Y_TILED_CCS ||
modifier == I915_FORMAT_MOD_Yf_TILED_CCS;
}
u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
u32 pixel_format, u64 modifier)
{
struct intel_crtc *crtc;
struct intel_plane *plane;
/*
* We assume the primary plane for pipe A has
* the highest stride limits of them all.
*/
crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_A);
plane = to_intel_plane(crtc->base.primary);
return plane->max_stride(plane, pixel_format, modifier,
DRM_MODE_ROTATE_0);
}
static
u32 intel_fb_max_stride(struct drm_i915_private *dev_priv,
u32 pixel_format, u64 modifier)
{
/*
* Arbitrary limit for gen4+ chosen to match the
* render engine max stride.
*
* The new CCS hash mode makes remapping impossible
*/
if (!is_ccs_modifier(modifier)) {
if (INTEL_GEN(dev_priv) >= 7)
return 256*1024;
else if (INTEL_GEN(dev_priv) >= 4)
return 128*1024;
}
return intel_plane_fb_max_stride(dev_priv, pixel_format, modifier);
}
static u32
intel_fb_stride_alignment(const struct drm_framebuffer *fb, int color_plane)
{
struct drm_i915_private *dev_priv = to_i915(fb->dev);
if (fb->modifier == DRM_FORMAT_MOD_LINEAR) {
u32 max_stride = intel_plane_fb_max_stride(dev_priv,
fb->format->format,
fb->modifier);
/*
* To make remapping with linear generally feasible
* we need the stride to be page aligned.
*/
if (fb->pitches[color_plane] > max_stride)
return intel_tile_size(dev_priv);
else
return 64;
} else {
return intel_tile_width_bytes(fb, color_plane);
}
}
bool intel_plane_can_remap(const struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
int i;
/* We don't want to deal with remapping with cursors */
if (plane->id == PLANE_CURSOR)
return false;
/*
* The display engine limits already match/exceed the
* render engine limits, so not much point in remapping.
* Would also need to deal with the fence POT alignment
* and gen2 2KiB GTT tile size.
*/
if (INTEL_GEN(dev_priv) < 4)
return false;
/*
* The new CCS hash mode isn't compatible with remapping as
* the virtual address of the pages affects the compressed data.
*/
if (is_ccs_modifier(fb->modifier))
return false;
/* Linear needs a page aligned stride for remapping */
if (fb->modifier == DRM_FORMAT_MOD_LINEAR) {
unsigned int alignment = intel_tile_size(dev_priv) - 1;
for (i = 0; i < fb->format->num_planes; i++) {
if (fb->pitches[i] & alignment)
return false;
}
}
return true;
}
static bool intel_plane_needs_remap(const struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
u32 stride, max_stride;
/*
* No remapping for invisible planes since we don't have
* an actual source viewport to remap.
*/
if (!plane_state->base.visible)
return false;
if (!intel_plane_can_remap(plane_state))
return false;
/*
* FIXME: aux plane limits on gen9+ are
* unclear in Bspec, for now no checking.
*/
stride = intel_fb_pitch(fb, 0, rotation);
max_stride = plane->max_stride(plane, fb->format->format,
fb->modifier, rotation);
return stride > max_stride;
}
static int
intel_fill_fb_info(struct drm_i915_private *dev_priv,
struct drm_framebuffer *fb)
{
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct intel_rotation_info *rot_info = &intel_fb->rot_info;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
u32 gtt_offset_rotated = 0;
unsigned int max_size = 0;
int i, num_planes = fb->format->num_planes;
unsigned int tile_size = intel_tile_size(dev_priv);
for (i = 0; i < num_planes; i++) {
unsigned int width, height;
unsigned int cpp, size;
u32 offset;
int x, y;
int ret;
cpp = fb->format->cpp[i];
width = drm_framebuffer_plane_width(fb->width, fb, i);
height = drm_framebuffer_plane_height(fb->height, fb, i);
ret = intel_fb_offset_to_xy(&x, &y, fb, i);
if (ret) {
DRM_DEBUG_KMS("bad fb plane %d offset: 0x%x\n",
i, fb->offsets[i]);
return ret;
}
if (is_ccs_modifier(fb->modifier) && i == 1) {
int hsub = fb->format->hsub;
int vsub = fb->format->vsub;
int tile_width, tile_height;
int main_x, main_y;
int ccs_x, ccs_y;
intel_tile_dims(fb, i, &tile_width, &tile_height);
tile_width *= hsub;
tile_height *= vsub;
ccs_x = (x * hsub) % tile_width;
ccs_y = (y * vsub) % tile_height;
main_x = intel_fb->normal[0].x % tile_width;
main_y = intel_fb->normal[0].y % tile_height;
/*
* CCS doesn't have its own x/y offset register, so the intra CCS tile
* x/y offsets must match between CCS and the main surface.
*/
if (main_x != ccs_x || main_y != ccs_y) {
DRM_DEBUG_KMS("Bad CCS x/y (main %d,%d ccs %d,%d) full (main %d,%d ccs %d,%d)\n",
main_x, main_y,
ccs_x, ccs_y,
intel_fb->normal[0].x,
intel_fb->normal[0].y,
x, y);
return -EINVAL;
}
}
/*
* The fence (if used) is aligned to the start of the object
* so having the framebuffer wrap around across the edge of the
* fenced region doesn't really work. We have no API to configure
* the fence start offset within the object (nor could we probably
* on gen2/3). So it's just easier if we just require that the
* fb layout agrees with the fence layout. We already check that the
* fb stride matches the fence stride elsewhere.
*/
if (i == 0 && i915_gem_object_is_tiled(obj) &&
(x + width) * cpp > fb->pitches[i]) {
DRM_DEBUG_KMS("bad fb plane %d offset: 0x%x\n",
i, fb->offsets[i]);
return -EINVAL;
}
/*
* First pixel of the framebuffer from
* the start of the normal gtt mapping.
*/
intel_fb->normal[i].x = x;
intel_fb->normal[i].y = y;
offset = intel_compute_aligned_offset(dev_priv, &x, &y, fb, i,
fb->pitches[i],
DRM_MODE_ROTATE_0,
tile_size);
offset /= tile_size;
if (!is_surface_linear(fb->modifier, i)) {
unsigned int tile_width, tile_height;
unsigned int pitch_tiles;
struct drm_rect r;
intel_tile_dims(fb, i, &tile_width, &tile_height);
rot_info->plane[i].offset = offset;
rot_info->plane[i].stride = DIV_ROUND_UP(fb->pitches[i], tile_width * cpp);
rot_info->plane[i].width = DIV_ROUND_UP(x + width, tile_width);
rot_info->plane[i].height = DIV_ROUND_UP(y + height, tile_height);
intel_fb->rotated[i].pitch =
rot_info->plane[i].height * tile_height;
/* how many tiles does this plane need */
size = rot_info->plane[i].stride * rot_info->plane[i].height;
/*
* If the plane isn't horizontally tile aligned,
* we need one more tile.
*/
if (x != 0)
size++;
/* rotate the x/y offsets to match the GTT view */
drm_rect_init(&r, x, y, width, height);
drm_rect_rotate(&r,
rot_info->plane[i].width * tile_width,
rot_info->plane[i].height * tile_height,
DRM_MODE_ROTATE_270);
x = r.x1;
y = r.y1;
/* rotate the tile dimensions to match the GTT view */
pitch_tiles = intel_fb->rotated[i].pitch / tile_height;
swap(tile_width, tile_height);
/*
* We only keep the x/y offsets, so push all of the
* gtt offset into the x/y offsets.
*/
intel_adjust_tile_offset(&x, &y,
tile_width, tile_height,
tile_size, pitch_tiles,
gtt_offset_rotated * tile_size, 0);
gtt_offset_rotated += rot_info->plane[i].width * rot_info->plane[i].height;
/*
* First pixel of the framebuffer from
* the start of the rotated gtt mapping.
*/
intel_fb->rotated[i].x = x;
intel_fb->rotated[i].y = y;
} else {
size = DIV_ROUND_UP((y + height) * fb->pitches[i] +
x * cpp, tile_size);
}
/* how many tiles in total needed in the bo */
max_size = max(max_size, offset + size);
}
if (mul_u32_u32(max_size, tile_size) > obj->base.size) {
DRM_DEBUG_KMS("fb too big for bo (need %llu bytes, have %zu bytes)\n",
mul_u32_u32(max_size, tile_size), obj->base.size);
return -EINVAL;
}
return 0;
}
static void
intel_plane_remap_gtt(struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
struct drm_framebuffer *fb = plane_state->base.fb;
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct intel_rotation_info *info = &plane_state->view.rotated;
unsigned int rotation = plane_state->base.rotation;
int i, num_planes = fb->format->num_planes;
unsigned int tile_size = intel_tile_size(dev_priv);
unsigned int src_x, src_y;
unsigned int src_w, src_h;
u32 gtt_offset = 0;
memset(&plane_state->view, 0, sizeof(plane_state->view));
plane_state->view.type = drm_rotation_90_or_270(rotation) ?
I915_GGTT_VIEW_ROTATED : I915_GGTT_VIEW_REMAPPED;
src_x = plane_state->base.src.x1 >> 16;
src_y = plane_state->base.src.y1 >> 16;
src_w = drm_rect_width(&plane_state->base.src) >> 16;
src_h = drm_rect_height(&plane_state->base.src) >> 16;
WARN_ON(is_ccs_modifier(fb->modifier));
/* Make src coordinates relative to the viewport */
drm_rect_translate(&plane_state->base.src,
-(src_x << 16), -(src_y << 16));
/* Rotate src coordinates to match rotated GTT view */
if (drm_rotation_90_or_270(rotation))
drm_rect_rotate(&plane_state->base.src,
src_w << 16, src_h << 16,
DRM_MODE_ROTATE_270);
for (i = 0; i < num_planes; i++) {
unsigned int hsub = i ? fb->format->hsub : 1;
unsigned int vsub = i ? fb->format->vsub : 1;
unsigned int cpp = fb->format->cpp[i];
unsigned int tile_width, tile_height;
unsigned int width, height;
unsigned int pitch_tiles;
unsigned int x, y;
u32 offset;
intel_tile_dims(fb, i, &tile_width, &tile_height);
x = src_x / hsub;
y = src_y / vsub;
width = src_w / hsub;
height = src_h / vsub;
/*
* First pixel of the src viewport from the
* start of the normal gtt mapping.
*/
x += intel_fb->normal[i].x;
y += intel_fb->normal[i].y;
offset = intel_compute_aligned_offset(dev_priv, &x, &y,
fb, i, fb->pitches[i],
DRM_MODE_ROTATE_0, tile_size);
offset /= tile_size;
info->plane[i].offset = offset;
info->plane[i].stride = DIV_ROUND_UP(fb->pitches[i],
tile_width * cpp);
info->plane[i].width = DIV_ROUND_UP(x + width, tile_width);
info->plane[i].height = DIV_ROUND_UP(y + height, tile_height);
if (drm_rotation_90_or_270(rotation)) {
struct drm_rect r;
/* rotate the x/y offsets to match the GTT view */
drm_rect_init(&r, x, y, width, height);
drm_rect_rotate(&r,
info->plane[i].width * tile_width,
info->plane[i].height * tile_height,
DRM_MODE_ROTATE_270);
x = r.x1;
y = r.y1;
pitch_tiles = info->plane[i].height;
plane_state->color_plane[i].stride = pitch_tiles * tile_height;
/* rotate the tile dimensions to match the GTT view */
swap(tile_width, tile_height);
} else {
pitch_tiles = info->plane[i].width;
plane_state->color_plane[i].stride = pitch_tiles * tile_width * cpp;
}
/*
* We only keep the x/y offsets, so push all of the
* gtt offset into the x/y offsets.
*/
intel_adjust_tile_offset(&x, &y,
tile_width, tile_height,
tile_size, pitch_tiles,
gtt_offset * tile_size, 0);
gtt_offset += info->plane[i].width * info->plane[i].height;
plane_state->color_plane[i].offset = 0;
plane_state->color_plane[i].x = x;
plane_state->color_plane[i].y = y;
}
}
static int
intel_plane_compute_gtt(struct intel_plane_state *plane_state)
{
const struct intel_framebuffer *fb =
to_intel_framebuffer(plane_state->base.fb);
unsigned int rotation = plane_state->base.rotation;
int i, num_planes;
if (!fb)
return 0;
num_planes = fb->base.format->num_planes;
if (intel_plane_needs_remap(plane_state)) {
intel_plane_remap_gtt(plane_state);
/*
* Sometimes even remapping can't overcome
* the stride limitations :( Can happen with
* big plane sizes and suitably misaligned
* offsets.
*/
return intel_plane_check_stride(plane_state);
}
intel_fill_fb_ggtt_view(&plane_state->view, &fb->base, rotation);
for (i = 0; i < num_planes; i++) {
plane_state->color_plane[i].stride = intel_fb_pitch(&fb->base, i, rotation);
plane_state->color_plane[i].offset = 0;
if (drm_rotation_90_or_270(rotation)) {
plane_state->color_plane[i].x = fb->rotated[i].x;
plane_state->color_plane[i].y = fb->rotated[i].y;
} else {
plane_state->color_plane[i].x = fb->normal[i].x;
plane_state->color_plane[i].y = fb->normal[i].y;
}
}
/* Rotate src coordinates to match rotated GTT view */
if (drm_rotation_90_or_270(rotation))
drm_rect_rotate(&plane_state->base.src,
fb->base.width << 16, fb->base.height << 16,
DRM_MODE_ROTATE_270);
return intel_plane_check_stride(plane_state);
}
static int i9xx_format_to_fourcc(int format)
{
switch (format) {
case DISPPLANE_8BPP:
return DRM_FORMAT_C8;
case DISPPLANE_BGRX555:
return DRM_FORMAT_XRGB1555;
case DISPPLANE_BGRX565:
return DRM_FORMAT_RGB565;
default:
case DISPPLANE_BGRX888:
return DRM_FORMAT_XRGB8888;
case DISPPLANE_RGBX888:
return DRM_FORMAT_XBGR8888;
case DISPPLANE_BGRX101010:
return DRM_FORMAT_XRGB2101010;
case DISPPLANE_RGBX101010:
return DRM_FORMAT_XBGR2101010;
case DISPPLANE_RGBX161616:
return DRM_FORMAT_XBGR16161616F;
}
}
int skl_format_to_fourcc(int format, bool rgb_order, bool alpha)
{
switch (format) {
case PLANE_CTL_FORMAT_RGB_565:
return DRM_FORMAT_RGB565;
case PLANE_CTL_FORMAT_NV12:
return DRM_FORMAT_NV12;
case PLANE_CTL_FORMAT_P010:
return DRM_FORMAT_P010;
case PLANE_CTL_FORMAT_P012:
return DRM_FORMAT_P012;
case PLANE_CTL_FORMAT_P016:
return DRM_FORMAT_P016;
case PLANE_CTL_FORMAT_Y210:
return DRM_FORMAT_Y210;
case PLANE_CTL_FORMAT_Y212:
return DRM_FORMAT_Y212;
case PLANE_CTL_FORMAT_Y216:
return DRM_FORMAT_Y216;
case PLANE_CTL_FORMAT_Y410:
return DRM_FORMAT_XVYU2101010;
case PLANE_CTL_FORMAT_Y412:
return DRM_FORMAT_XVYU12_16161616;
case PLANE_CTL_FORMAT_Y416:
return DRM_FORMAT_XVYU16161616;
default:
case PLANE_CTL_FORMAT_XRGB_8888:
if (rgb_order) {
if (alpha)
return DRM_FORMAT_ABGR8888;
else
return DRM_FORMAT_XBGR8888;
} else {
if (alpha)
return DRM_FORMAT_ARGB8888;
else
return DRM_FORMAT_XRGB8888;
}
case PLANE_CTL_FORMAT_XRGB_2101010:
if (rgb_order)
return DRM_FORMAT_XBGR2101010;
else
return DRM_FORMAT_XRGB2101010;
case PLANE_CTL_FORMAT_XRGB_16161616F:
if (rgb_order) {
if (alpha)
return DRM_FORMAT_ABGR16161616F;
else
return DRM_FORMAT_XBGR16161616F;
} else {
if (alpha)
return DRM_FORMAT_ARGB16161616F;
else
return DRM_FORMAT_XRGB16161616F;
}
}
}
static bool
intel_alloc_initial_plane_obj(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_mode_fb_cmd2 mode_cmd = { 0 };
struct drm_framebuffer *fb = &plane_config->fb->base;
u32 base_aligned = round_down(plane_config->base, PAGE_SIZE);
u32 size_aligned = round_up(plane_config->base + plane_config->size,
PAGE_SIZE);
struct drm_i915_gem_object *obj;
bool ret = false;
size_aligned -= base_aligned;
if (plane_config->size == 0)
return false;
/* If the FB is too big, just don't use it since fbdev is not very
* important and we should probably use that space with FBC or other
* features. */
if (size_aligned * 2 > dev_priv->stolen_usable_size)
return false;
switch (fb->modifier) {
case DRM_FORMAT_MOD_LINEAR:
case I915_FORMAT_MOD_X_TILED:
case I915_FORMAT_MOD_Y_TILED:
break;
default:
DRM_DEBUG_DRIVER("Unsupported modifier for initial FB: 0x%llx\n",
fb->modifier);
return false;
}
obj = i915_gem_object_create_stolen_for_preallocated(dev_priv,
base_aligned,
base_aligned,
size_aligned);
if (IS_ERR(obj))
return false;
switch (plane_config->tiling) {
case I915_TILING_NONE:
break;
case I915_TILING_X:
case I915_TILING_Y:
obj->tiling_and_stride = fb->pitches[0] | plane_config->tiling;
break;
default:
MISSING_CASE(plane_config->tiling);
goto out;
}
mode_cmd.pixel_format = fb->format->format;
mode_cmd.width = fb->width;
mode_cmd.height = fb->height;
mode_cmd.pitches[0] = fb->pitches[0];
mode_cmd.modifier[0] = fb->modifier;
mode_cmd.flags = DRM_MODE_FB_MODIFIERS;
if (intel_framebuffer_init(to_intel_framebuffer(fb), obj, &mode_cmd)) {
DRM_DEBUG_KMS("intel fb init failed\n");
goto out;
}
DRM_DEBUG_KMS("initial plane fb obj %p\n", obj);
ret = true;
out:
i915_gem_object_put(obj);
return ret;
}
static void
intel_set_plane_visible(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state,
bool visible)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
plane_state->base.visible = visible;
if (visible)
crtc_state->base.plane_mask |= drm_plane_mask(&plane->base);
else
crtc_state->base.plane_mask &= ~drm_plane_mask(&plane->base);
}
static void fixup_active_planes(struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
struct drm_plane *plane;
/*
* Active_planes aliases if multiple "primary" or cursor planes
* have been used on the same (or wrong) pipe. plane_mask uses
* unique ids, hence we can use that to reconstruct active_planes.
*/
crtc_state->active_planes = 0;
drm_for_each_plane_mask(plane, &dev_priv->drm,
crtc_state->base.plane_mask)
crtc_state->active_planes |= BIT(to_intel_plane(plane)->id);
}
static void intel_plane_disable_noatomic(struct intel_crtc *crtc,
struct intel_plane *plane)
{
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
DRM_DEBUG_KMS("Disabling [PLANE:%d:%s] on [CRTC:%d:%s]\n",
plane->base.base.id, plane->base.name,
crtc->base.base.id, crtc->base.name);
intel_set_plane_visible(crtc_state, plane_state, false);
fixup_active_planes(crtc_state);
crtc_state->data_rate[plane->id] = 0;
crtc_state->min_cdclk[plane->id] = 0;
if (plane->id == PLANE_PRIMARY)
intel_pre_disable_primary_noatomic(&crtc->base);
intel_disable_plane(plane, crtc_state);
}
static struct intel_frontbuffer *
to_intel_frontbuffer(struct drm_framebuffer *fb)
{
return fb ? to_intel_framebuffer(fb)->frontbuffer : NULL;
}
static void
intel_find_initial_plane_obj(struct intel_crtc *intel_crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_crtc *c;
struct drm_plane *primary = intel_crtc->base.primary;
struct drm_plane_state *plane_state = primary->state;
struct intel_plane *intel_plane = to_intel_plane(primary);
struct intel_plane_state *intel_state =
to_intel_plane_state(plane_state);
struct drm_framebuffer *fb;
if (!plane_config->fb)
return;
if (intel_alloc_initial_plane_obj(intel_crtc, plane_config)) {
fb = &plane_config->fb->base;
goto valid_fb;
}
kfree(plane_config->fb);
/*
* Failed to alloc the obj, check to see if we should share
* an fb with another CRTC instead
*/
for_each_crtc(dev, c) {
struct intel_plane_state *state;
if (c == &intel_crtc->base)
continue;
if (!to_intel_crtc(c)->active)
continue;
state = to_intel_plane_state(c->primary->state);
if (!state->vma)
continue;
if (intel_plane_ggtt_offset(state) == plane_config->base) {
fb = state->base.fb;
drm_framebuffer_get(fb);
goto valid_fb;
}
}
/*
* We've failed to reconstruct the BIOS FB. Current display state
* indicates that the primary plane is visible, but has a NULL FB,
* which will lead to problems later if we don't fix it up. The
* simplest solution is to just disable the primary plane now and
* pretend the BIOS never had it enabled.
*/
intel_plane_disable_noatomic(intel_crtc, intel_plane);
return;
valid_fb:
intel_state->base.rotation = plane_config->rotation;
intel_fill_fb_ggtt_view(&intel_state->view, fb,
intel_state->base.rotation);
intel_state->color_plane[0].stride =
intel_fb_pitch(fb, 0, intel_state->base.rotation);
intel_state->vma =
intel_pin_and_fence_fb_obj(fb,
&intel_state->view,
intel_plane_uses_fence(intel_state),
&intel_state->flags);
if (IS_ERR(intel_state->vma)) {
DRM_ERROR("failed to pin boot fb on pipe %d: %li\n",
intel_crtc->pipe, PTR_ERR(intel_state->vma));
intel_state->vma = NULL;
drm_framebuffer_put(fb);
return;
}
intel_frontbuffer_flush(to_intel_frontbuffer(fb), ORIGIN_DIRTYFB);
plane_state->src_x = 0;
plane_state->src_y = 0;
plane_state->src_w = fb->width << 16;
plane_state->src_h = fb->height << 16;
plane_state->crtc_x = 0;
plane_state->crtc_y = 0;
plane_state->crtc_w = fb->width;
plane_state->crtc_h = fb->height;
intel_state->base.src = drm_plane_state_src(plane_state);
intel_state->base.dst = drm_plane_state_dest(plane_state);
if (plane_config->tiling)
dev_priv->preserve_bios_swizzle = true;
plane_state->fb = fb;
plane_state->crtc = &intel_crtc->base;
atomic_or(to_intel_plane(primary)->frontbuffer_bit,
&to_intel_frontbuffer(fb)->bits);
}
static int skl_max_plane_width(const struct drm_framebuffer *fb,
int color_plane,
unsigned int rotation)
{
int cpp = fb->format->cpp[color_plane];
switch (fb->modifier) {
case DRM_FORMAT_MOD_LINEAR:
case I915_FORMAT_MOD_X_TILED:
/*
* Validated limit is 4k, but has 5k should
* work apart from the following features:
* - Ytile (already limited to 4k)
* - FP16 (already limited to 4k)
* - render compression (already limited to 4k)
* - KVMR sprite and cursor (don't care)
* - horizontal panning (TODO verify this)
* - pipe and plane scaling (TODO verify this)
*/
if (cpp == 8)
return 4096;
else
return 5120;
case I915_FORMAT_MOD_Y_TILED_CCS:
case I915_FORMAT_MOD_Yf_TILED_CCS:
/* FIXME AUX plane? */
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED:
if (cpp == 8)
return 2048;
else
return 4096;
default:
MISSING_CASE(fb->modifier);
return 2048;
}
}
static int glk_max_plane_width(const struct drm_framebuffer *fb,
int color_plane,
unsigned int rotation)
{
int cpp = fb->format->cpp[color_plane];
switch (fb->modifier) {
case DRM_FORMAT_MOD_LINEAR:
case I915_FORMAT_MOD_X_TILED:
if (cpp == 8)
return 4096;
else
return 5120;
case I915_FORMAT_MOD_Y_TILED_CCS:
case I915_FORMAT_MOD_Yf_TILED_CCS:
/* FIXME AUX plane? */
case I915_FORMAT_MOD_Y_TILED:
case I915_FORMAT_MOD_Yf_TILED:
if (cpp == 8)
return 2048;
else
return 5120;
default:
MISSING_CASE(fb->modifier);
return 2048;
}
}
static int icl_max_plane_width(const struct drm_framebuffer *fb,
int color_plane,
unsigned int rotation)
{
return 5120;
}
static int skl_max_plane_height(void)
{
return 4096;
}
static int icl_max_plane_height(void)
{
return 4320;
}
static bool skl_check_main_ccs_coordinates(struct intel_plane_state *plane_state,
int main_x, int main_y, u32 main_offset)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
int hsub = fb->format->hsub;
int vsub = fb->format->vsub;
int aux_x = plane_state->color_plane[1].x;
int aux_y = plane_state->color_plane[1].y;
u32 aux_offset = plane_state->color_plane[1].offset;
u32 alignment = intel_surf_alignment(fb, 1);
while (aux_offset >= main_offset && aux_y <= main_y) {
int x, y;
if (aux_x == main_x && aux_y == main_y)
break;
if (aux_offset == 0)
break;
x = aux_x / hsub;
y = aux_y / vsub;
aux_offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 1,
aux_offset, aux_offset - alignment);
aux_x = x * hsub + aux_x % hsub;
aux_y = y * vsub + aux_y % vsub;
}
if (aux_x != main_x || aux_y != main_y)
return false;
plane_state->color_plane[1].offset = aux_offset;
plane_state->color_plane[1].x = aux_x;
plane_state->color_plane[1].y = aux_y;
return true;
}
static int skl_check_main_surface(struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv = to_i915(plane_state->base.plane->dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
int x = plane_state->base.src.x1 >> 16;
int y = plane_state->base.src.y1 >> 16;
int w = drm_rect_width(&plane_state->base.src) >> 16;
int h = drm_rect_height(&plane_state->base.src) >> 16;
int max_width;
int max_height;
u32 alignment, offset, aux_offset = plane_state->color_plane[1].offset;
if (INTEL_GEN(dev_priv) >= 11)
max_width = icl_max_plane_width(fb, 0, rotation);
else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
max_width = glk_max_plane_width(fb, 0, rotation);
else
max_width = skl_max_plane_width(fb, 0, rotation);
if (INTEL_GEN(dev_priv) >= 11)
max_height = icl_max_plane_height();
else
max_height = skl_max_plane_height();
if (w > max_width || h > max_height) {
DRM_DEBUG_KMS("requested Y/RGB source size %dx%d too big (limit %dx%d)\n",
w, h, max_width, max_height);
return -EINVAL;
}
intel_add_fb_offsets(&x, &y, plane_state, 0);
offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 0);
alignment = intel_surf_alignment(fb, 0);
/*
* AUX surface offset is specified as the distance from the
* main surface offset, and it must be non-negative. Make
* sure that is what we will get.
*/
if (offset > aux_offset)
offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
offset, aux_offset & ~(alignment - 1));
/*
* When using an X-tiled surface, the plane blows up
* if the x offset + width exceed the stride.
*
* TODO: linear and Y-tiled seem fine, Yf untested,
*/
if (fb->modifier == I915_FORMAT_MOD_X_TILED) {
int cpp = fb->format->cpp[0];
while ((x + w) * cpp > plane_state->color_plane[0].stride) {
if (offset == 0) {
DRM_DEBUG_KMS("Unable to find suitable display surface offset due to X-tiling\n");
return -EINVAL;
}
offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
offset, offset - alignment);
}
}
/*
* CCS AUX surface doesn't have its own x/y offsets, we must make sure
* they match with the main surface x/y offsets.
*/
if (is_ccs_modifier(fb->modifier)) {
while (!skl_check_main_ccs_coordinates(plane_state, x, y, offset)) {
if (offset == 0)
break;
offset = intel_plane_adjust_aligned_offset(&x, &y, plane_state, 0,
offset, offset - alignment);
}
if (x != plane_state->color_plane[1].x || y != plane_state->color_plane[1].y) {
DRM_DEBUG_KMS("Unable to find suitable display surface offset due to CCS\n");
return -EINVAL;
}
}
plane_state->color_plane[0].offset = offset;
plane_state->color_plane[0].x = x;
plane_state->color_plane[0].y = y;
/*
* Put the final coordinates back so that the src
* coordinate checks will see the right values.
*/
drm_rect_translate_to(&plane_state->base.src,
x << 16, y << 16);
return 0;
}
static int skl_check_nv12_aux_surface(struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
int max_width = skl_max_plane_width(fb, 1, rotation);
int max_height = 4096;
int x = plane_state->base.src.x1 >> 17;
int y = plane_state->base.src.y1 >> 17;
int w = drm_rect_width(&plane_state->base.src) >> 17;
int h = drm_rect_height(&plane_state->base.src) >> 17;
u32 offset;
intel_add_fb_offsets(&x, &y, plane_state, 1);
offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 1);
/* FIXME not quite sure how/if these apply to the chroma plane */
if (w > max_width || h > max_height) {
DRM_DEBUG_KMS("CbCr source size %dx%d too big (limit %dx%d)\n",
w, h, max_width, max_height);
return -EINVAL;
}
plane_state->color_plane[1].offset = offset;
plane_state->color_plane[1].x = x;
plane_state->color_plane[1].y = y;
return 0;
}
static int skl_check_ccs_aux_surface(struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
int src_x = plane_state->base.src.x1 >> 16;
int src_y = plane_state->base.src.y1 >> 16;
int hsub = fb->format->hsub;
int vsub = fb->format->vsub;
int x = src_x / hsub;
int y = src_y / vsub;
u32 offset;
intel_add_fb_offsets(&x, &y, plane_state, 1);
offset = intel_plane_compute_aligned_offset(&x, &y, plane_state, 1);
plane_state->color_plane[1].offset = offset;
plane_state->color_plane[1].x = x * hsub + src_x % hsub;
plane_state->color_plane[1].y = y * vsub + src_y % vsub;
return 0;
}
int skl_check_plane_surface(struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
int ret;
ret = intel_plane_compute_gtt(plane_state);
if (ret)
return ret;
if (!plane_state->base.visible)
return 0;
/*
* Handle the AUX surface first since
* the main surface setup depends on it.
*/
if (drm_format_info_is_yuv_semiplanar(fb->format)) {
ret = skl_check_nv12_aux_surface(plane_state);
if (ret)
return ret;
} else if (is_ccs_modifier(fb->modifier)) {
ret = skl_check_ccs_aux_surface(plane_state);
if (ret)
return ret;
} else {
plane_state->color_plane[1].offset = ~0xfff;
plane_state->color_plane[1].x = 0;
plane_state->color_plane[1].y = 0;
}
ret = skl_check_main_surface(plane_state);
if (ret)
return ret;
return 0;
}
static void i9xx_plane_ratio(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state,
unsigned int *num, unsigned int *den)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int cpp = fb->format->cpp[0];
/*
* g4x bspec says 64bpp pixel rate can't exceed 80%
* of cdclk when the sprite plane is enabled on the
* same pipe. ilk/snb bspec says 64bpp pixel rate is
* never allowed to exceed 80% of cdclk. Let's just go
* with the ilk/snb limit always.
*/
if (cpp == 8) {
*num = 10;
*den = 8;
} else {
*num = 1;
*den = 1;
}
}
static int i9xx_plane_min_cdclk(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
unsigned int pixel_rate;
unsigned int num, den;
/*
* Note that crtc_state->pixel_rate accounts for both
* horizontal and vertical panel fitter downscaling factors.
* Pre-HSW bspec tells us to only consider the horizontal
* downscaling factor here. We ignore that and just consider
* both for simplicity.
*/
pixel_rate = crtc_state->pixel_rate;
i9xx_plane_ratio(crtc_state, plane_state, &num, &den);
/* two pixels per clock with double wide pipe */
if (crtc_state->double_wide)
den *= 2;
return DIV_ROUND_UP(pixel_rate * num, den);
}
unsigned int
i9xx_plane_max_stride(struct intel_plane *plane,
u32 pixel_format, u64 modifier,
unsigned int rotation)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
if (!HAS_GMCH(dev_priv)) {
return 32*1024;
} else if (INTEL_GEN(dev_priv) >= 4) {
if (modifier == I915_FORMAT_MOD_X_TILED)
return 16*1024;
else
return 32*1024;
} else if (INTEL_GEN(dev_priv) >= 3) {
if (modifier == I915_FORMAT_MOD_X_TILED)
return 8*1024;
else
return 16*1024;
} else {
if (plane->i9xx_plane == PLANE_C)
return 4*1024;
else
return 8*1024;
}
}
static u32 i9xx_plane_ctl_crtc(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 dspcntr = 0;
if (crtc_state->gamma_enable)
dspcntr |= DISPPLANE_GAMMA_ENABLE;
if (crtc_state->csc_enable)
dspcntr |= DISPPLANE_PIPE_CSC_ENABLE;
if (INTEL_GEN(dev_priv) < 5)
dspcntr |= DISPPLANE_SEL_PIPE(crtc->pipe);
return dspcntr;
}
static u32 i9xx_plane_ctl(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
u32 dspcntr;
dspcntr = DISPLAY_PLANE_ENABLE;
if (IS_G4X(dev_priv) || IS_GEN(dev_priv, 5) ||
IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv))
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
switch (fb->format->format) {
case DRM_FORMAT_C8:
dspcntr |= DISPPLANE_8BPP;
break;
case DRM_FORMAT_XRGB1555:
dspcntr |= DISPPLANE_BGRX555;
break;
case DRM_FORMAT_RGB565:
dspcntr |= DISPPLANE_BGRX565;
break;
case DRM_FORMAT_XRGB8888:
dspcntr |= DISPPLANE_BGRX888;
break;
case DRM_FORMAT_XBGR8888:
dspcntr |= DISPPLANE_RGBX888;
break;
case DRM_FORMAT_XRGB2101010:
dspcntr |= DISPPLANE_BGRX101010;
break;
case DRM_FORMAT_XBGR2101010:
dspcntr |= DISPPLANE_RGBX101010;
break;
case DRM_FORMAT_XBGR16161616F:
dspcntr |= DISPPLANE_RGBX161616;
break;
default:
MISSING_CASE(fb->format->format);
return 0;
}
if (INTEL_GEN(dev_priv) >= 4 &&
fb->modifier == I915_FORMAT_MOD_X_TILED)
dspcntr |= DISPPLANE_TILED;
if (rotation & DRM_MODE_ROTATE_180)
dspcntr |= DISPPLANE_ROTATE_180;
if (rotation & DRM_MODE_REFLECT_X)
dspcntr |= DISPPLANE_MIRROR;
return dspcntr;
}
int i9xx_check_plane_surface(struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
int src_x, src_y, src_w;
u32 offset;
int ret;
ret = intel_plane_compute_gtt(plane_state);
if (ret)
return ret;
if (!plane_state->base.visible)
return 0;
src_w = drm_rect_width(&plane_state->base.src) >> 16;
src_x = plane_state->base.src.x1 >> 16;
src_y = plane_state->base.src.y1 >> 16;
/* Undocumented hardware limit on i965/g4x/vlv/chv */
if (HAS_GMCH(dev_priv) && fb->format->cpp[0] == 8 && src_w > 2048)
return -EINVAL;
intel_add_fb_offsets(&src_x, &src_y, plane_state, 0);
if (INTEL_GEN(dev_priv) >= 4)
offset = intel_plane_compute_aligned_offset(&src_x, &src_y,
plane_state, 0);
else
offset = 0;
/*
* Put the final coordinates back so that the src
* coordinate checks will see the right values.
*/
drm_rect_translate_to(&plane_state->base.src,
src_x << 16, src_y << 16);
/* HSW/BDW do this automagically in hardware */
if (!IS_HASWELL(dev_priv) && !IS_BROADWELL(dev_priv)) {
unsigned int rotation = plane_state->base.rotation;
int src_w = drm_rect_width(&plane_state->base.src) >> 16;
int src_h = drm_rect_height(&plane_state->base.src) >> 16;
if (rotation & DRM_MODE_ROTATE_180) {
src_x += src_w - 1;
src_y += src_h - 1;
} else if (rotation & DRM_MODE_REFLECT_X) {
src_x += src_w - 1;
}
}
plane_state->color_plane[0].offset = offset;
plane_state->color_plane[0].x = src_x;
plane_state->color_plane[0].y = src_y;
return 0;
}
static bool i9xx_plane_has_windowing(struct intel_plane *plane)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
if (IS_CHERRYVIEW(dev_priv))
return i9xx_plane == PLANE_B;
else if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
return false;
else if (IS_GEN(dev_priv, 4))
return i9xx_plane == PLANE_C;
else
return i9xx_plane == PLANE_B ||
i9xx_plane == PLANE_C;
}
static int
i9xx_plane_check(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
int ret;
ret = chv_plane_check_rotation(plane_state);
if (ret)
return ret;
ret = drm_atomic_helper_check_plane_state(&plane_state->base,
&crtc_state->base,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
i9xx_plane_has_windowing(plane),
true);
if (ret)
return ret;
ret = i9xx_check_plane_surface(plane_state);
if (ret)
return ret;
if (!plane_state->base.visible)
return 0;
ret = intel_plane_check_src_coordinates(plane_state);
if (ret)
return ret;
plane_state->ctl = i9xx_plane_ctl(crtc_state, plane_state);
return 0;
}
static void i9xx_update_plane(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
u32 linear_offset;
int x = plane_state->color_plane[0].x;
int y = plane_state->color_plane[0].y;
int crtc_x = plane_state->base.dst.x1;
int crtc_y = plane_state->base.dst.y1;
int crtc_w = drm_rect_width(&plane_state->base.dst);
int crtc_h = drm_rect_height(&plane_state->base.dst);
unsigned long irqflags;
u32 dspaddr_offset;
u32 dspcntr;
dspcntr = plane_state->ctl | i9xx_plane_ctl_crtc(crtc_state);
linear_offset = intel_fb_xy_to_linear(x, y, plane_state, 0);
if (INTEL_GEN(dev_priv) >= 4)
dspaddr_offset = plane_state->color_plane[0].offset;
else
dspaddr_offset = linear_offset;
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
I915_WRITE_FW(DSPSTRIDE(i9xx_plane), plane_state->color_plane[0].stride);
if (INTEL_GEN(dev_priv) < 4) {
/*
* PLANE_A doesn't actually have a full window
* generator but let's assume we still need to
* program whatever is there.
*/
I915_WRITE_FW(DSPPOS(i9xx_plane), (crtc_y << 16) | crtc_x);
I915_WRITE_FW(DSPSIZE(i9xx_plane),
((crtc_h - 1) << 16) | (crtc_w - 1));
} else if (IS_CHERRYVIEW(dev_priv) && i9xx_plane == PLANE_B) {
I915_WRITE_FW(PRIMPOS(i9xx_plane), (crtc_y << 16) | crtc_x);
I915_WRITE_FW(PRIMSIZE(i9xx_plane),
((crtc_h - 1) << 16) | (crtc_w - 1));
I915_WRITE_FW(PRIMCNSTALPHA(i9xx_plane), 0);
}
if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
I915_WRITE_FW(DSPOFFSET(i9xx_plane), (y << 16) | x);
} else if (INTEL_GEN(dev_priv) >= 4) {
I915_WRITE_FW(DSPLINOFF(i9xx_plane), linear_offset);
I915_WRITE_FW(DSPTILEOFF(i9xx_plane), (y << 16) | x);
}
/*
* The control register self-arms if the plane was previously
* disabled. Try to make the plane enable atomic by writing
* the control register just before the surface register.
*/
I915_WRITE_FW(DSPCNTR(i9xx_plane), dspcntr);
if (INTEL_GEN(dev_priv) >= 4)
I915_WRITE_FW(DSPSURF(i9xx_plane),
intel_plane_ggtt_offset(plane_state) +
dspaddr_offset);
else
I915_WRITE_FW(DSPADDR(i9xx_plane),
intel_plane_ggtt_offset(plane_state) +
dspaddr_offset);
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
}
static void i9xx_disable_plane(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
unsigned long irqflags;
u32 dspcntr;
/*
* DSPCNTR pipe gamma enable on g4x+ and pipe csc
* enable on ilk+ affect the pipe bottom color as
* well, so we must configure them even if the plane
* is disabled.
*
* On pre-g4x there is no way to gamma correct the
* pipe bottom color but we'll keep on doing this
* anyway so that the crtc state readout works correctly.
*/
dspcntr = i9xx_plane_ctl_crtc(crtc_state);
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
I915_WRITE_FW(DSPCNTR(i9xx_plane), dspcntr);
if (INTEL_GEN(dev_priv) >= 4)
I915_WRITE_FW(DSPSURF(i9xx_plane), 0);
else
I915_WRITE_FW(DSPADDR(i9xx_plane), 0);
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
}
static bool i9xx_plane_get_hw_state(struct intel_plane *plane,
enum pipe *pipe)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum intel_display_power_domain power_domain;
enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
intel_wakeref_t wakeref;
bool ret;
u32 val;
/*
* Not 100% correct for planes that can move between pipes,
* but that's only the case for gen2-4 which don't have any
* display power wells.
*/
power_domain = POWER_DOMAIN_PIPE(plane->pipe);
wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wakeref)
return false;
val = I915_READ(DSPCNTR(i9xx_plane));
ret = val & DISPLAY_PLANE_ENABLE;
if (INTEL_GEN(dev_priv) >= 5)
*pipe = plane->pipe;
else
*pipe = (val & DISPPLANE_SEL_PIPE_MASK) >>
DISPPLANE_SEL_PIPE_SHIFT;
intel_display_power_put(dev_priv, power_domain, wakeref);
return ret;
}
static void skl_detach_scaler(struct intel_crtc *intel_crtc, int id)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
I915_WRITE(SKL_PS_CTRL(intel_crtc->pipe, id), 0);
I915_WRITE(SKL_PS_WIN_POS(intel_crtc->pipe, id), 0);
I915_WRITE(SKL_PS_WIN_SZ(intel_crtc->pipe, id), 0);
}
/*
* This function detaches (aka. unbinds) unused scalers in hardware
*/
static void skl_detach_scalers(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
const struct intel_crtc_scaler_state *scaler_state =
&crtc_state->scaler_state;
int i;
/* loop through and disable scalers that aren't in use */
for (i = 0; i < intel_crtc->num_scalers; i++) {
if (!scaler_state->scalers[i].in_use)
skl_detach_scaler(intel_crtc, i);
}
}
static unsigned int skl_plane_stride_mult(const struct drm_framebuffer *fb,
int color_plane, unsigned int rotation)
{
/*
* The stride is either expressed as a multiple of 64 bytes chunks for
* linear buffers or in number of tiles for tiled buffers.
*/
if (fb->modifier == DRM_FORMAT_MOD_LINEAR)
return 64;
else if (drm_rotation_90_or_270(rotation))
return intel_tile_height(fb, color_plane);
else
return intel_tile_width_bytes(fb, color_plane);
}
u32 skl_plane_stride(const struct intel_plane_state *plane_state,
int color_plane)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
u32 stride = plane_state->color_plane[color_plane].stride;
if (color_plane >= fb->format->num_planes)
return 0;
return stride / skl_plane_stride_mult(fb, color_plane, rotation);
}
static u32 skl_plane_ctl_format(u32 pixel_format)
{
switch (pixel_format) {
case DRM_FORMAT_C8:
return PLANE_CTL_FORMAT_INDEXED;
case DRM_FORMAT_RGB565:
return PLANE_CTL_FORMAT_RGB_565;
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_ABGR8888:
return PLANE_CTL_FORMAT_XRGB_8888 | PLANE_CTL_ORDER_RGBX;
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
return PLANE_CTL_FORMAT_XRGB_8888;
case DRM_FORMAT_XBGR2101010:
return PLANE_CTL_FORMAT_XRGB_2101010 | PLANE_CTL_ORDER_RGBX;
case DRM_FORMAT_XRGB2101010:
return PLANE_CTL_FORMAT_XRGB_2101010;
case DRM_FORMAT_XBGR16161616F:
case DRM_FORMAT_ABGR16161616F:
return PLANE_CTL_FORMAT_XRGB_16161616F | PLANE_CTL_ORDER_RGBX;
case DRM_FORMAT_XRGB16161616F:
case DRM_FORMAT_ARGB16161616F:
return PLANE_CTL_FORMAT_XRGB_16161616F;
case DRM_FORMAT_YUYV:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YUYV;
case DRM_FORMAT_YVYU:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_YVYU;
case DRM_FORMAT_UYVY:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_UYVY;
case DRM_FORMAT_VYUY:
return PLANE_CTL_FORMAT_YUV422 | PLANE_CTL_YUV422_VYUY;
case DRM_FORMAT_NV12:
return PLANE_CTL_FORMAT_NV12;
case DRM_FORMAT_P010:
return PLANE_CTL_FORMAT_P010;
case DRM_FORMAT_P012:
return PLANE_CTL_FORMAT_P012;
case DRM_FORMAT_P016:
return PLANE_CTL_FORMAT_P016;
case DRM_FORMAT_Y210:
return PLANE_CTL_FORMAT_Y210;
case DRM_FORMAT_Y212:
return PLANE_CTL_FORMAT_Y212;
case DRM_FORMAT_Y216:
return PLANE_CTL_FORMAT_Y216;
case DRM_FORMAT_XVYU2101010:
return PLANE_CTL_FORMAT_Y410;
case DRM_FORMAT_XVYU12_16161616:
return PLANE_CTL_FORMAT_Y412;
case DRM_FORMAT_XVYU16161616:
return PLANE_CTL_FORMAT_Y416;
default:
MISSING_CASE(pixel_format);
}
return 0;
}
static u32 skl_plane_ctl_alpha(const struct intel_plane_state *plane_state)
{
if (!plane_state->base.fb->format->has_alpha)
return PLANE_CTL_ALPHA_DISABLE;
switch (plane_state->base.pixel_blend_mode) {
case DRM_MODE_BLEND_PIXEL_NONE:
return PLANE_CTL_ALPHA_DISABLE;
case DRM_MODE_BLEND_PREMULTI:
return PLANE_CTL_ALPHA_SW_PREMULTIPLY;
case DRM_MODE_BLEND_COVERAGE:
return PLANE_CTL_ALPHA_HW_PREMULTIPLY;
default:
MISSING_CASE(plane_state->base.pixel_blend_mode);
return PLANE_CTL_ALPHA_DISABLE;
}
}
static u32 glk_plane_color_ctl_alpha(const struct intel_plane_state *plane_state)
{
if (!plane_state->base.fb->format->has_alpha)
return PLANE_COLOR_ALPHA_DISABLE;
switch (plane_state->base.pixel_blend_mode) {
case DRM_MODE_BLEND_PIXEL_NONE:
return PLANE_COLOR_ALPHA_DISABLE;
case DRM_MODE_BLEND_PREMULTI:
return PLANE_COLOR_ALPHA_SW_PREMULTIPLY;
case DRM_MODE_BLEND_COVERAGE:
return PLANE_COLOR_ALPHA_HW_PREMULTIPLY;
default:
MISSING_CASE(plane_state->base.pixel_blend_mode);
return PLANE_COLOR_ALPHA_DISABLE;
}
}
static u32 skl_plane_ctl_tiling(u64 fb_modifier)
{
switch (fb_modifier) {
case DRM_FORMAT_MOD_LINEAR:
break;
case I915_FORMAT_MOD_X_TILED:
return PLANE_CTL_TILED_X;
case I915_FORMAT_MOD_Y_TILED:
return PLANE_CTL_TILED_Y;
case I915_FORMAT_MOD_Y_TILED_CCS:
return PLANE_CTL_TILED_Y | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
case I915_FORMAT_MOD_Yf_TILED:
return PLANE_CTL_TILED_YF;
case I915_FORMAT_MOD_Yf_TILED_CCS:
return PLANE_CTL_TILED_YF | PLANE_CTL_RENDER_DECOMPRESSION_ENABLE;
default:
MISSING_CASE(fb_modifier);
}
return 0;
}
static u32 skl_plane_ctl_rotate(unsigned int rotate)
{
switch (rotate) {
case DRM_MODE_ROTATE_0:
break;
/*
* DRM_MODE_ROTATE_ is counter clockwise to stay compatible with Xrandr
* while i915 HW rotation is clockwise, thats why this swapping.
*/
case DRM_MODE_ROTATE_90:
return PLANE_CTL_ROTATE_270;
case DRM_MODE_ROTATE_180:
return PLANE_CTL_ROTATE_180;
case DRM_MODE_ROTATE_270:
return PLANE_CTL_ROTATE_90;
default:
MISSING_CASE(rotate);
}
return 0;
}
static u32 cnl_plane_ctl_flip(unsigned int reflect)
{
switch (reflect) {
case 0:
break;
case DRM_MODE_REFLECT_X:
return PLANE_CTL_FLIP_HORIZONTAL;
case DRM_MODE_REFLECT_Y:
default:
MISSING_CASE(reflect);
}
return 0;
}
u32 skl_plane_ctl_crtc(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
u32 plane_ctl = 0;
if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
return plane_ctl;
if (crtc_state->gamma_enable)
plane_ctl |= PLANE_CTL_PIPE_GAMMA_ENABLE;
if (crtc_state->csc_enable)
plane_ctl |= PLANE_CTL_PIPE_CSC_ENABLE;
return plane_ctl;
}
u32 skl_plane_ctl(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
unsigned int rotation = plane_state->base.rotation;
const struct drm_intel_sprite_colorkey *key = &plane_state->ckey;
u32 plane_ctl;
plane_ctl = PLANE_CTL_ENABLE;
if (INTEL_GEN(dev_priv) < 10 && !IS_GEMINILAKE(dev_priv)) {
plane_ctl |= skl_plane_ctl_alpha(plane_state);
plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
plane_ctl |= PLANE_CTL_YUV_TO_RGB_CSC_FORMAT_BT709;
if (plane_state->base.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
plane_ctl |= PLANE_CTL_YUV_RANGE_CORRECTION_DISABLE;
}
plane_ctl |= skl_plane_ctl_format(fb->format->format);
plane_ctl |= skl_plane_ctl_tiling(fb->modifier);
plane_ctl |= skl_plane_ctl_rotate(rotation & DRM_MODE_ROTATE_MASK);
if (INTEL_GEN(dev_priv) >= 10)
plane_ctl |= cnl_plane_ctl_flip(rotation &
DRM_MODE_REFLECT_MASK);
if (key->flags & I915_SET_COLORKEY_DESTINATION)
plane_ctl |= PLANE_CTL_KEY_ENABLE_DESTINATION;
else if (key->flags & I915_SET_COLORKEY_SOURCE)
plane_ctl |= PLANE_CTL_KEY_ENABLE_SOURCE;
return plane_ctl;
}
u32 glk_plane_color_ctl_crtc(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
u32 plane_color_ctl = 0;
if (INTEL_GEN(dev_priv) >= 11)
return plane_color_ctl;
if (crtc_state->gamma_enable)
plane_color_ctl |= PLANE_COLOR_PIPE_GAMMA_ENABLE;
if (crtc_state->csc_enable)
plane_color_ctl |= PLANE_COLOR_PIPE_CSC_ENABLE;
return plane_color_ctl;
}
u32 glk_plane_color_ctl(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
u32 plane_color_ctl = 0;
plane_color_ctl |= PLANE_COLOR_PLANE_GAMMA_DISABLE;
plane_color_ctl |= glk_plane_color_ctl_alpha(plane_state);
if (fb->format->is_yuv && !icl_is_hdr_plane(dev_priv, plane->id)) {
if (plane_state->base.color_encoding == DRM_COLOR_YCBCR_BT709)
plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV709_TO_RGB709;
else
plane_color_ctl |= PLANE_COLOR_CSC_MODE_YUV601_TO_RGB709;
if (plane_state->base.color_range == DRM_COLOR_YCBCR_FULL_RANGE)
plane_color_ctl |= PLANE_COLOR_YUV_RANGE_CORRECTION_DISABLE;
} else if (fb->format->is_yuv) {
plane_color_ctl |= PLANE_COLOR_INPUT_CSC_ENABLE;
}
return plane_color_ctl;
}
static int
__intel_display_resume(struct drm_device *dev,
struct drm_atomic_state *state,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_crtc_state *crtc_state;
struct drm_crtc *crtc;
int i, ret;
intel_modeset_setup_hw_state(dev, ctx);
intel_vga_redisable(to_i915(dev));
if (!state)
return 0;
/*
* We've duplicated the state, pointers to the old state are invalid.
*
* Don't attempt to use the old state until we commit the duplicated state.
*/
for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
/*
* Force recalculation even if we restore
* current state. With fast modeset this may not result
* in a modeset when the state is compatible.
*/
crtc_state->mode_changed = true;
}
/* ignore any reset values/BIOS leftovers in the WM registers */
if (!HAS_GMCH(to_i915(dev)))
to_intel_atomic_state(state)->skip_intermediate_wm = true;
ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
WARN_ON(ret == -EDEADLK);
return ret;
}
static bool gpu_reset_clobbers_display(struct drm_i915_private *dev_priv)
{
return (INTEL_INFO(dev_priv)->gpu_reset_clobbers_display &&
intel_has_gpu_reset(&dev_priv->gt));
}
void intel_prepare_reset(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_modeset_acquire_ctx *ctx = &dev_priv->reset_ctx;
struct drm_atomic_state *state;
int ret;
/* reset doesn't touch the display */
if (!i915_modparams.force_reset_modeset_test &&
!gpu_reset_clobbers_display(dev_priv))
return;
/* We have a modeset vs reset deadlock, defensively unbreak it. */
set_bit(I915_RESET_MODESET, &dev_priv->gt.reset.flags);
smp_mb__after_atomic();
wake_up_bit(&dev_priv->gt.reset.flags, I915_RESET_MODESET);
if (atomic_read(&dev_priv->gpu_error.pending_fb_pin)) {
DRM_DEBUG_KMS("Modeset potentially stuck, unbreaking through wedging\n");
intel_gt_set_wedged(&dev_priv->gt);
}
/*
* Need mode_config.mutex so that we don't
* trample ongoing ->detect() and whatnot.
*/
mutex_lock(&dev->mode_config.mutex);
drm_modeset_acquire_init(ctx, 0);
while (1) {
ret = drm_modeset_lock_all_ctx(dev, ctx);
if (ret != -EDEADLK)
break;
drm_modeset_backoff(ctx);
}
/*
* Disabling the crtcs gracefully seems nicer. Also the
* g33 docs say we should at least disable all the planes.
*/
state = drm_atomic_helper_duplicate_state(dev, ctx);
if (IS_ERR(state)) {
ret = PTR_ERR(state);
DRM_ERROR("Duplicating state failed with %i\n", ret);
return;
}
ret = drm_atomic_helper_disable_all(dev, ctx);
if (ret) {
DRM_ERROR("Suspending crtc's failed with %i\n", ret);
drm_atomic_state_put(state);
return;
}
dev_priv->modeset_restore_state = state;
state->acquire_ctx = ctx;
}
void intel_finish_reset(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = &dev_priv->drm;
struct drm_modeset_acquire_ctx *ctx = &dev_priv->reset_ctx;
struct drm_atomic_state *state;
int ret;
/* reset doesn't touch the display */
if (!test_bit(I915_RESET_MODESET, &dev_priv->gt.reset.flags))
return;
state = fetch_and_zero(&dev_priv->modeset_restore_state);
if (!state)
goto unlock;
/* reset doesn't touch the display */
if (!gpu_reset_clobbers_display(dev_priv)) {
/* for testing only restore the display */
ret = __intel_display_resume(dev, state, ctx);
if (ret)
DRM_ERROR("Restoring old state failed with %i\n", ret);
} else {
/*
* The display has been reset as well,
* so need a full re-initialization.
*/
intel_pps_unlock_regs_wa(dev_priv);
intel_modeset_init_hw(dev_priv);
intel_init_clock_gating(dev_priv);
spin_lock_irq(&dev_priv->irq_lock);
if (dev_priv->display.hpd_irq_setup)
dev_priv->display.hpd_irq_setup(dev_priv);
spin_unlock_irq(&dev_priv->irq_lock);
ret = __intel_display_resume(dev, state, ctx);
if (ret)
DRM_ERROR("Restoring old state failed with %i\n", ret);
intel_hpd_init(dev_priv);
}
drm_atomic_state_put(state);
unlock:
drm_modeset_drop_locks(ctx);
drm_modeset_acquire_fini(ctx);
mutex_unlock(&dev->mode_config.mutex);
clear_bit_unlock(I915_RESET_MODESET, &dev_priv->gt.reset.flags);
}
static void icl_set_pipe_chicken(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
u32 tmp;
tmp = I915_READ(PIPE_CHICKEN(pipe));
/*
* Display WA #1153: icl
* enable hardware to bypass the alpha math
* and rounding for per-pixel values 00 and 0xff
*/
tmp |= PER_PIXEL_ALPHA_BYPASS_EN;
/*
* Display WA # 1605353570: icl
* Set the pixel rounding bit to 1 for allowing
* passthrough of Frame buffer pixels unmodified
* across pipe
*/
tmp |= PIXEL_ROUNDING_TRUNC_FB_PASSTHRU;
I915_WRITE(PIPE_CHICKEN(pipe), tmp);
}
static void icl_enable_trans_port_sync(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 trans_ddi_func_ctl2_val;
u8 master_select;
/*
* Configure the master select and enable Transcoder Port Sync for
* Slave CRTCs transcoder.
*/
if (crtc_state->master_transcoder == INVALID_TRANSCODER)
return;
if (crtc_state->master_transcoder == TRANSCODER_EDP)
master_select = 0;
else
master_select = crtc_state->master_transcoder + 1;
/* Set the master select bits for Tranascoder Port Sync */
trans_ddi_func_ctl2_val = (PORT_SYNC_MODE_MASTER_SELECT(master_select) &
PORT_SYNC_MODE_MASTER_SELECT_MASK) <<
PORT_SYNC_MODE_MASTER_SELECT_SHIFT;
/* Enable Transcoder Port Sync */
trans_ddi_func_ctl2_val |= PORT_SYNC_MODE_ENABLE;
I915_WRITE(TRANS_DDI_FUNC_CTL2(crtc_state->cpu_transcoder),
trans_ddi_func_ctl2_val);
}
static void icl_disable_transcoder_port_sync(const struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
i915_reg_t reg;
u32 trans_ddi_func_ctl2_val;
if (old_crtc_state->master_transcoder == INVALID_TRANSCODER)
return;
DRM_DEBUG_KMS("Disabling Transcoder Port Sync on Slave Transcoder %s\n",
transcoder_name(old_crtc_state->cpu_transcoder));
reg = TRANS_DDI_FUNC_CTL2(old_crtc_state->cpu_transcoder);
trans_ddi_func_ctl2_val = ~(PORT_SYNC_MODE_ENABLE |
PORT_SYNC_MODE_MASTER_SELECT_MASK);
I915_WRITE(reg, trans_ddi_func_ctl2_val);
}
static void intel_fdi_normal_train(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 temp;
/* enable normal train */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
if (IS_IVYBRIDGE(dev_priv)) {
temp &= ~FDI_LINK_TRAIN_NONE_IVB;
temp |= FDI_LINK_TRAIN_NONE_IVB | FDI_TX_ENHANCE_FRAME_ENABLE;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_NONE | FDI_TX_ENHANCE_FRAME_ENABLE;
}
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev_priv)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_NORMAL_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_NONE;
}
I915_WRITE(reg, temp | FDI_RX_ENHANCE_FRAME_ENABLE);
/* wait one idle pattern time */
POSTING_READ(reg);
udelay(1000);
/* IVB wants error correction enabled */
if (IS_IVYBRIDGE(dev_priv))
I915_WRITE(reg, I915_READ(reg) | FDI_FS_ERRC_ENABLE |
FDI_FE_ERRC_ENABLE);
}
/* The FDI link training functions for ILK/Ibexpeak. */
static void ironlake_fdi_link_train(struct intel_crtc *crtc,
const struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 temp, tries;
/* FDI needs bits from pipe first */
assert_pipe_enabled(dev_priv, pipe);
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
for train result */
reg = FDI_RX_IMR(pipe);
temp = I915_READ(reg);
temp &= ~FDI_RX_SYMBOL_LOCK;
temp &= ~FDI_RX_BIT_LOCK;
I915_WRITE(reg, temp);
I915_READ(reg);
udelay(150);
/* enable CPU FDI TX and PCH FDI RX */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_DP_PORT_WIDTH_MASK;
temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(reg, temp | FDI_TX_ENABLE);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(reg, temp | FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(150);
/* Ironlake workaround, enable clock pointer after FDI enable*/
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR |
FDI_RX_PHASE_SYNC_POINTER_EN);
reg = FDI_RX_IIR(pipe);
for (tries = 0; tries < 5; tries++) {
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if ((temp & FDI_RX_BIT_LOCK)) {
DRM_DEBUG_KMS("FDI train 1 done.\n");
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
break;
}
}
if (tries == 5)
DRM_ERROR("FDI train 1 fail!\n");
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
reg = FDI_RX_IIR(pipe);
for (tries = 0; tries < 5; tries++) {
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_SYMBOL_LOCK) {
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("FDI train 2 done.\n");
break;
}
}
if (tries == 5)
DRM_ERROR("FDI train 2 fail!\n");
DRM_DEBUG_KMS("FDI train done\n");
}
static const int snb_b_fdi_train_param[] = {
FDI_LINK_TRAIN_400MV_0DB_SNB_B,
FDI_LINK_TRAIN_400MV_6DB_SNB_B,
FDI_LINK_TRAIN_600MV_3_5DB_SNB_B,
FDI_LINK_TRAIN_800MV_0DB_SNB_B,
};
/* The FDI link training functions for SNB/Cougarpoint. */
static void gen6_fdi_link_train(struct intel_crtc *crtc,
const struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 temp, i, retry;
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
for train result */
reg = FDI_RX_IMR(pipe);
temp = I915_READ(reg);
temp &= ~FDI_RX_SYMBOL_LOCK;
temp &= ~FDI_RX_BIT_LOCK;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
/* enable CPU FDI TX and PCH FDI RX */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_DP_PORT_WIDTH_MASK;
temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
/* SNB-B */
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
I915_WRITE(reg, temp | FDI_TX_ENABLE);
I915_WRITE(FDI_RX_MISC(pipe),
FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev_priv)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
}
I915_WRITE(reg, temp | FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(150);
for (i = 0; i < 4; i++) {
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[i];
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(500);
for (retry = 0; retry < 5; retry++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_BIT_LOCK) {
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
DRM_DEBUG_KMS("FDI train 1 done.\n");
break;
}
udelay(50);
}
if (retry < 5)
break;
}
if (i == 4)
DRM_ERROR("FDI train 1 fail!\n");
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
if (IS_GEN(dev_priv, 6)) {
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
/* SNB-B */
temp |= FDI_LINK_TRAIN_400MV_0DB_SNB_B;
}
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev_priv)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
}
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
for (i = 0; i < 4; i++) {
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[i];
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(500);
for (retry = 0; retry < 5; retry++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_SYMBOL_LOCK) {
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("FDI train 2 done.\n");
break;
}
udelay(50);
}
if (retry < 5)
break;
}
if (i == 4)
DRM_ERROR("FDI train 2 fail!\n");
DRM_DEBUG_KMS("FDI train done.\n");
}
/* Manual link training for Ivy Bridge A0 parts */
static void ivb_manual_fdi_link_train(struct intel_crtc *crtc,
const struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 temp, i, j;
/* Train 1: umask FDI RX Interrupt symbol_lock and bit_lock bit
for train result */
reg = FDI_RX_IMR(pipe);
temp = I915_READ(reg);
temp &= ~FDI_RX_SYMBOL_LOCK;
temp &= ~FDI_RX_BIT_LOCK;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(150);
DRM_DEBUG_KMS("FDI_RX_IIR before link train 0x%x\n",
I915_READ(FDI_RX_IIR(pipe)));
/* Try each vswing and preemphasis setting twice before moving on */
for (j = 0; j < ARRAY_SIZE(snb_b_fdi_train_param) * 2; j++) {
/* disable first in case we need to retry */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(FDI_LINK_TRAIN_AUTO | FDI_LINK_TRAIN_NONE_IVB);
temp &= ~FDI_TX_ENABLE;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_AUTO;
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp &= ~FDI_RX_ENABLE;
I915_WRITE(reg, temp);
/* enable CPU FDI TX and PCH FDI RX */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_DP_PORT_WIDTH_MASK;
temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
temp |= FDI_LINK_TRAIN_PATTERN_1_IVB;
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[j/2];
temp |= FDI_COMPOSITE_SYNC;
I915_WRITE(reg, temp | FDI_TX_ENABLE);
I915_WRITE(FDI_RX_MISC(pipe),
FDI_RX_TP1_TO_TP2_48 | FDI_RX_FDI_DELAY_90);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
temp |= FDI_COMPOSITE_SYNC;
I915_WRITE(reg, temp | FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(1); /* should be 0.5us */
for (i = 0; i < 4; i++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_BIT_LOCK ||
(I915_READ(reg) & FDI_RX_BIT_LOCK)) {
I915_WRITE(reg, temp | FDI_RX_BIT_LOCK);
DRM_DEBUG_KMS("FDI train 1 done, level %i.\n",
i);
break;
}
udelay(1); /* should be 0.5us */
}
if (i == 4) {
DRM_DEBUG_KMS("FDI train 1 fail on vswing %d\n", j / 2);
continue;
}
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE_IVB;
temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(2); /* should be 1.5us */
for (i = 0; i < 4; i++) {
reg = FDI_RX_IIR(pipe);
temp = I915_READ(reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if (temp & FDI_RX_SYMBOL_LOCK ||
(I915_READ(reg) & FDI_RX_SYMBOL_LOCK)) {
I915_WRITE(reg, temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("FDI train 2 done, level %i.\n",
i);
goto train_done;
}
udelay(2); /* should be 1.5us */
}
if (i == 4)
DRM_DEBUG_KMS("FDI train 2 fail on vswing %d\n", j / 2);
}
train_done:
DRM_DEBUG_KMS("FDI train done.\n");
}
static void ironlake_fdi_pll_enable(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
enum pipe pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp;
/* enable PCH FDI RX PLL, wait warmup plus DMI latency */
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(FDI_DP_PORT_WIDTH_MASK | (0x7 << 16));
temp |= FDI_DP_PORT_WIDTH(crtc_state->fdi_lanes);
temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
I915_WRITE(reg, temp | FDI_RX_PLL_ENABLE);
POSTING_READ(reg);
udelay(200);
/* Switch from Rawclk to PCDclk */
temp = I915_READ(reg);
I915_WRITE(reg, temp | FDI_PCDCLK);
POSTING_READ(reg);
udelay(200);
/* Enable CPU FDI TX PLL, always on for Ironlake */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
if ((temp & FDI_TX_PLL_ENABLE) == 0) {
I915_WRITE(reg, temp | FDI_TX_PLL_ENABLE);
POSTING_READ(reg);
udelay(100);
}
}
static void ironlake_fdi_pll_disable(struct intel_crtc *intel_crtc)
{
struct drm_device *dev = intel_crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp;
/* Switch from PCDclk to Rawclk */
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_PCDCLK);
/* Disable CPU FDI TX PLL */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_TX_PLL_ENABLE);
POSTING_READ(reg);
udelay(100);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_RX_PLL_ENABLE);
/* Wait for the clocks to turn off. */
POSTING_READ(reg);
udelay(100);
}
static void ironlake_fdi_disable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
i915_reg_t reg;
u32 temp;
/* disable CPU FDI tx and PCH FDI rx */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
I915_WRITE(reg, temp & ~FDI_TX_ENABLE);
POSTING_READ(reg);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(0x7 << 16);
temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
I915_WRITE(reg, temp & ~FDI_RX_ENABLE);
POSTING_READ(reg);
udelay(100);
/* Ironlake workaround, disable clock pointer after downing FDI */
if (HAS_PCH_IBX(dev_priv))
I915_WRITE(FDI_RX_CHICKEN(pipe), FDI_RX_PHASE_SYNC_POINTER_OVR);
/* still set train pattern 1 */
reg = FDI_TX_CTL(pipe);
temp = I915_READ(reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(reg, temp);
reg = FDI_RX_CTL(pipe);
temp = I915_READ(reg);
if (HAS_PCH_CPT(dev_priv)) {
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_1_CPT;
} else {
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
}
/* BPC in FDI rx is consistent with that in PIPECONF */
temp &= ~(0x07 << 16);
temp |= (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) << 11;
I915_WRITE(reg, temp);
POSTING_READ(reg);
udelay(100);
}
bool intel_has_pending_fb_unpin(struct drm_i915_private *dev_priv)
{
struct drm_crtc *crtc;
bool cleanup_done;
drm_for_each_crtc(crtc, &dev_priv->drm) {
struct drm_crtc_commit *commit;
spin_lock(&crtc->commit_lock);
commit = list_first_entry_or_null(&crtc->commit_list,
struct drm_crtc_commit, commit_entry);
cleanup_done = commit ?
try_wait_for_completion(&commit->cleanup_done) : true;
spin_unlock(&crtc->commit_lock);
if (cleanup_done)
continue;
drm_crtc_wait_one_vblank(crtc);
return true;
}
return false;
}
void lpt_disable_iclkip(struct drm_i915_private *dev_priv)
{
u32 temp;
I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_GATE);
mutex_lock(&dev_priv->sb_lock);
temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
temp |= SBI_SSCCTL_DISABLE;
intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
}
/* Program iCLKIP clock to the desired frequency */
static void lpt_program_iclkip(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
int clock = crtc_state->base.adjusted_mode.crtc_clock;
u32 divsel, phaseinc, auxdiv, phasedir = 0;
u32 temp;
lpt_disable_iclkip(dev_priv);
/* The iCLK virtual clock root frequency is in MHz,
* but the adjusted_mode->crtc_clock in in KHz. To get the
* divisors, it is necessary to divide one by another, so we
* convert the virtual clock precision to KHz here for higher
* precision.
*/
for (auxdiv = 0; auxdiv < 2; auxdiv++) {
u32 iclk_virtual_root_freq = 172800 * 1000;
u32 iclk_pi_range = 64;
u32 desired_divisor;
desired_divisor = DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
clock << auxdiv);
divsel = (desired_divisor / iclk_pi_range) - 2;
phaseinc = desired_divisor % iclk_pi_range;
/*
* Near 20MHz is a corner case which is
* out of range for the 7-bit divisor
*/
if (divsel <= 0x7f)
break;
}
/* This should not happen with any sane values */
WARN_ON(SBI_SSCDIVINTPHASE_DIVSEL(divsel) &
~SBI_SSCDIVINTPHASE_DIVSEL_MASK);
WARN_ON(SBI_SSCDIVINTPHASE_DIR(phasedir) &
~SBI_SSCDIVINTPHASE_INCVAL_MASK);
DRM_DEBUG_KMS("iCLKIP clock: found settings for %dKHz refresh rate: auxdiv=%x, divsel=%x, phasedir=%x, phaseinc=%x\n",
clock,
auxdiv,
divsel,
phasedir,
phaseinc);
mutex_lock(&dev_priv->sb_lock);
/* Program SSCDIVINTPHASE6 */
temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
temp &= ~SBI_SSCDIVINTPHASE_DIVSEL_MASK;
temp |= SBI_SSCDIVINTPHASE_DIVSEL(divsel);
temp &= ~SBI_SSCDIVINTPHASE_INCVAL_MASK;
temp |= SBI_SSCDIVINTPHASE_INCVAL(phaseinc);
temp |= SBI_SSCDIVINTPHASE_DIR(phasedir);
temp |= SBI_SSCDIVINTPHASE_PROPAGATE;
intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE6, temp, SBI_ICLK);
/* Program SSCAUXDIV */
temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
temp &= ~SBI_SSCAUXDIV_FINALDIV2SEL(1);
temp |= SBI_SSCAUXDIV_FINALDIV2SEL(auxdiv);
intel_sbi_write(dev_priv, SBI_SSCAUXDIV6, temp, SBI_ICLK);
/* Enable modulator and associated divider */
temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
temp &= ~SBI_SSCCTL_DISABLE;
intel_sbi_write(dev_priv, SBI_SSCCTL6, temp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
/* Wait for initialization time */
udelay(24);
I915_WRITE(PIXCLK_GATE, PIXCLK_GATE_UNGATE);
}
int lpt_get_iclkip(struct drm_i915_private *dev_priv)
{
u32 divsel, phaseinc, auxdiv;
u32 iclk_virtual_root_freq = 172800 * 1000;
u32 iclk_pi_range = 64;
u32 desired_divisor;
u32 temp;
if ((I915_READ(PIXCLK_GATE) & PIXCLK_GATE_UNGATE) == 0)
return 0;
mutex_lock(&dev_priv->sb_lock);
temp = intel_sbi_read(dev_priv, SBI_SSCCTL6, SBI_ICLK);
if (temp & SBI_SSCCTL_DISABLE) {
mutex_unlock(&dev_priv->sb_lock);
return 0;
}
temp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE6, SBI_ICLK);
divsel = (temp & SBI_SSCDIVINTPHASE_DIVSEL_MASK) >>
SBI_SSCDIVINTPHASE_DIVSEL_SHIFT;
phaseinc = (temp & SBI_SSCDIVINTPHASE_INCVAL_MASK) >>
SBI_SSCDIVINTPHASE_INCVAL_SHIFT;
temp = intel_sbi_read(dev_priv, SBI_SSCAUXDIV6, SBI_ICLK);
auxdiv = (temp & SBI_SSCAUXDIV_FINALDIV2SEL_MASK) >>
SBI_SSCAUXDIV_FINALDIV2SEL_SHIFT;
mutex_unlock(&dev_priv->sb_lock);
desired_divisor = (divsel + 2) * iclk_pi_range + phaseinc;
return DIV_ROUND_CLOSEST(iclk_virtual_root_freq,
desired_divisor << auxdiv);
}
static void ironlake_pch_transcoder_set_timings(const struct intel_crtc_state *crtc_state,
enum pipe pch_transcoder)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
I915_WRITE(PCH_TRANS_HTOTAL(pch_transcoder),
I915_READ(HTOTAL(cpu_transcoder)));
I915_WRITE(PCH_TRANS_HBLANK(pch_transcoder),
I915_READ(HBLANK(cpu_transcoder)));
I915_WRITE(PCH_TRANS_HSYNC(pch_transcoder),
I915_READ(HSYNC(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VTOTAL(pch_transcoder),
I915_READ(VTOTAL(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VBLANK(pch_transcoder),
I915_READ(VBLANK(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VSYNC(pch_transcoder),
I915_READ(VSYNC(cpu_transcoder)));
I915_WRITE(PCH_TRANS_VSYNCSHIFT(pch_transcoder),
I915_READ(VSYNCSHIFT(cpu_transcoder)));
}
static void cpt_set_fdi_bc_bifurcation(struct drm_i915_private *dev_priv, bool enable)
{
u32 temp;
temp = I915_READ(SOUTH_CHICKEN1);
if (!!(temp & FDI_BC_BIFURCATION_SELECT) == enable)
return;
WARN_ON(I915_READ(FDI_RX_CTL(PIPE_B)) & FDI_RX_ENABLE);
WARN_ON(I915_READ(FDI_RX_CTL(PIPE_C)) & FDI_RX_ENABLE);
temp &= ~FDI_BC_BIFURCATION_SELECT;
if (enable)
temp |= FDI_BC_BIFURCATION_SELECT;
DRM_DEBUG_KMS("%sabling fdi C rx\n", enable ? "en" : "dis");
I915_WRITE(SOUTH_CHICKEN1, temp);
POSTING_READ(SOUTH_CHICKEN1);
}
static void ivybridge_update_fdi_bc_bifurcation(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
switch (crtc->pipe) {
case PIPE_A:
break;
case PIPE_B:
if (crtc_state->fdi_lanes > 2)
cpt_set_fdi_bc_bifurcation(dev_priv, false);
else
cpt_set_fdi_bc_bifurcation(dev_priv, true);
break;
case PIPE_C:
cpt_set_fdi_bc_bifurcation(dev_priv, true);
break;
default:
BUG();
}
}
/*
* Finds the encoder associated with the given CRTC. This can only be
* used when we know that the CRTC isn't feeding multiple encoders!
*/
static struct intel_encoder *
intel_get_crtc_new_encoder(const struct intel_atomic_state *state,
const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
const struct drm_connector_state *connector_state;
const struct drm_connector *connector;
struct intel_encoder *encoder = NULL;
int num_encoders = 0;
int i;
for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
if (connector_state->crtc != &crtc->base)
continue;
encoder = to_intel_encoder(connector_state->best_encoder);
num_encoders++;
}
WARN(num_encoders != 1, "%d encoders for pipe %c\n",
num_encoders, pipe_name(crtc->pipe));
return encoder;
}
/*
* Enable PCH resources required for PCH ports:
* - PCH PLLs
* - FDI training & RX/TX
* - update transcoder timings
* - DP transcoding bits
* - transcoder
*/
static void ironlake_pch_enable(const struct intel_atomic_state *state,
const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
u32 temp;
assert_pch_transcoder_disabled(dev_priv, pipe);
if (IS_IVYBRIDGE(dev_priv))
ivybridge_update_fdi_bc_bifurcation(crtc_state);
/* Write the TU size bits before fdi link training, so that error
* detection works. */
I915_WRITE(FDI_RX_TUSIZE1(pipe),
I915_READ(PIPE_DATA_M1(pipe)) & TU_SIZE_MASK);
/* For PCH output, training FDI link */
dev_priv->display.fdi_link_train(crtc, crtc_state);
/* We need to program the right clock selection before writing the pixel
* mutliplier into the DPLL. */
if (HAS_PCH_CPT(dev_priv)) {
u32 sel;
temp = I915_READ(PCH_DPLL_SEL);
temp |= TRANS_DPLL_ENABLE(pipe);
sel = TRANS_DPLLB_SEL(pipe);
if (crtc_state->shared_dpll ==
intel_get_shared_dpll_by_id(dev_priv, DPLL_ID_PCH_PLL_B))
temp |= sel;
else
temp &= ~sel;
I915_WRITE(PCH_DPLL_SEL, temp);
}
/* XXX: pch pll's can be enabled any time before we enable the PCH
* transcoder, and we actually should do this to not upset any PCH
* transcoder that already use the clock when we share it.
*
* Note that enable_shared_dpll tries to do the right thing, but
* get_shared_dpll unconditionally resets the pll - we need that to have
* the right LVDS enable sequence. */
intel_enable_shared_dpll(crtc_state);
/* set transcoder timing, panel must allow it */
assert_panel_unlocked(dev_priv, pipe);
ironlake_pch_transcoder_set_timings(crtc_state, pipe);
intel_fdi_normal_train(crtc);
/* For PCH DP, enable TRANS_DP_CTL */
if (HAS_PCH_CPT(dev_priv) &&
intel_crtc_has_dp_encoder(crtc_state)) {
const struct drm_display_mode *adjusted_mode =
&crtc_state->base.adjusted_mode;
u32 bpc = (I915_READ(PIPECONF(pipe)) & PIPECONF_BPC_MASK) >> 5;
i915_reg_t reg = TRANS_DP_CTL(pipe);
enum port port;
temp = I915_READ(reg);
temp &= ~(TRANS_DP_PORT_SEL_MASK |
TRANS_DP_SYNC_MASK |
TRANS_DP_BPC_MASK);
temp |= TRANS_DP_OUTPUT_ENABLE;
temp |= bpc << 9; /* same format but at 11:9 */
if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
temp |= TRANS_DP_HSYNC_ACTIVE_HIGH;
if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
temp |= TRANS_DP_VSYNC_ACTIVE_HIGH;
port = intel_get_crtc_new_encoder(state, crtc_state)->port;
WARN_ON(port < PORT_B || port > PORT_D);
temp |= TRANS_DP_PORT_SEL(port);
I915_WRITE(reg, temp);
}
ironlake_enable_pch_transcoder(crtc_state);
}
static void lpt_pch_enable(const struct intel_atomic_state *state,
const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
assert_pch_transcoder_disabled(dev_priv, PIPE_A);
lpt_program_iclkip(crtc_state);
/* Set transcoder timing. */
ironlake_pch_transcoder_set_timings(crtc_state, PIPE_A);
lpt_enable_pch_transcoder(dev_priv, cpu_transcoder);
}
static void cpt_verify_modeset(struct drm_device *dev, enum pipe pipe)
{
struct drm_i915_private *dev_priv = to_i915(dev);
i915_reg_t dslreg = PIPEDSL(pipe);
u32 temp;
temp = I915_READ(dslreg);
udelay(500);
if (wait_for(I915_READ(dslreg) != temp, 5)) {
if (wait_for(I915_READ(dslreg) != temp, 5))
DRM_ERROR("mode set failed: pipe %c stuck\n", pipe_name(pipe));
}
}
/*
* The hardware phase 0.0 refers to the center of the pixel.
* We want to start from the top/left edge which is phase
* -0.5. That matches how the hardware calculates the scaling
* factors (from top-left of the first pixel to bottom-right
* of the last pixel, as opposed to the pixel centers).
*
* For 4:2:0 subsampled chroma planes we obviously have to
* adjust that so that the chroma sample position lands in
* the right spot.
*
* Note that for packed YCbCr 4:2:2 formats there is no way to
* control chroma siting. The hardware simply replicates the
* chroma samples for both of the luma samples, and thus we don't
* actually get the expected MPEG2 chroma siting convention :(
* The same behaviour is observed on pre-SKL platforms as well.
*
* Theory behind the formula (note that we ignore sub-pixel
* source coordinates):
* s = source sample position
* d = destination sample position
*
* Downscaling 4:1:
* -0.5
* | 0.0
* | | 1.5 (initial phase)
* | | |
* v v v
* | s | s | s | s |
* | d |
*
* Upscaling 1:4:
* -0.5
* | -0.375 (initial phase)
* | | 0.0
* | | |
* v v v
* | s |
* | d | d | d | d |
*/
u16 skl_scaler_calc_phase(int sub, int scale, bool chroma_cosited)
{
int phase = -0x8000;
u16 trip = 0;
if (chroma_cosited)
phase += (sub - 1) * 0x8000 / sub;
phase += scale / (2 * sub);
/*
* Hardware initial phase limited to [-0.5:1.5].
* Since the max hardware scale factor is 3.0, we
* should never actually excdeed 1.0 here.
*/
WARN_ON(phase < -0x8000 || phase > 0x18000);
if (phase < 0)
phase = 0x10000 + phase;
else
trip = PS_PHASE_TRIP;
return ((phase >> 2) & PS_PHASE_MASK) | trip;
}
#define SKL_MIN_SRC_W 8
#define SKL_MAX_SRC_W 4096
#define SKL_MIN_SRC_H 8
#define SKL_MAX_SRC_H 4096
#define SKL_MIN_DST_W 8
#define SKL_MAX_DST_W 4096
#define SKL_MIN_DST_H 8
#define SKL_MAX_DST_H 4096
#define ICL_MAX_SRC_W 5120
#define ICL_MAX_SRC_H 4096
#define ICL_MAX_DST_W 5120
#define ICL_MAX_DST_H 4096
#define SKL_MIN_YUV_420_SRC_W 16
#define SKL_MIN_YUV_420_SRC_H 16
static int
skl_update_scaler(struct intel_crtc_state *crtc_state, bool force_detach,
unsigned int scaler_user, int *scaler_id,
int src_w, int src_h, int dst_w, int dst_h,
const struct drm_format_info *format, bool need_scaler)
{
struct intel_crtc_scaler_state *scaler_state =
&crtc_state->scaler_state;
struct intel_crtc *intel_crtc =
to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(intel_crtc->base.dev);
const struct drm_display_mode *adjusted_mode =
&crtc_state->base.adjusted_mode;
/*
* Src coordinates are already rotated by 270 degrees for
* the 90/270 degree plane rotation cases (to match the
* GTT mapping), hence no need to account for rotation here.
*/
if (src_w != dst_w || src_h != dst_h)
need_scaler = true;
/*
* Scaling/fitting not supported in IF-ID mode in GEN9+
* TODO: Interlace fetch mode doesn't support YUV420 planar formats.
* Once NV12 is enabled, handle it here while allocating scaler
* for NV12.
*/
if (INTEL_GEN(dev_priv) >= 9 && crtc_state->base.enable &&
need_scaler && adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
DRM_DEBUG_KMS("Pipe/Plane scaling not supported with IF-ID mode\n");
return -EINVAL;
}
/*
* if plane is being disabled or scaler is no more required or force detach
* - free scaler binded to this plane/crtc
* - in order to do this, update crtc->scaler_usage
*
* Here scaler state in crtc_state is set free so that
* scaler can be assigned to other user. Actual register
* update to free the scaler is done in plane/panel-fit programming.
* For this purpose crtc/plane_state->scaler_id isn't reset here.
*/
if (force_detach || !need_scaler) {
if (*scaler_id >= 0) {
scaler_state->scaler_users &= ~(1 << scaler_user);
scaler_state->scalers[*scaler_id].in_use = 0;
DRM_DEBUG_KMS("scaler_user index %u.%u: "
"Staged freeing scaler id %d scaler_users = 0x%x\n",
intel_crtc->pipe, scaler_user, *scaler_id,
scaler_state->scaler_users);
*scaler_id = -1;
}
return 0;
}
if (format && drm_format_info_is_yuv_semiplanar(format) &&
(src_h < SKL_MIN_YUV_420_SRC_H || src_w < SKL_MIN_YUV_420_SRC_W)) {
DRM_DEBUG_KMS("Planar YUV: src dimensions not met\n");
return -EINVAL;
}
/* range checks */
if (src_w < SKL_MIN_SRC_W || src_h < SKL_MIN_SRC_H ||
dst_w < SKL_MIN_DST_W || dst_h < SKL_MIN_DST_H ||
(INTEL_GEN(dev_priv) >= 11 &&
(src_w > ICL_MAX_SRC_W || src_h > ICL_MAX_SRC_H ||
dst_w > ICL_MAX_DST_W || dst_h > ICL_MAX_DST_H)) ||
(INTEL_GEN(dev_priv) < 11 &&
(src_w > SKL_MAX_SRC_W || src_h > SKL_MAX_SRC_H ||
dst_w > SKL_MAX_DST_W || dst_h > SKL_MAX_DST_H))) {
DRM_DEBUG_KMS("scaler_user index %u.%u: src %ux%u dst %ux%u "
"size is out of scaler range\n",
intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h);
return -EINVAL;
}
/* mark this plane as a scaler user in crtc_state */
scaler_state->scaler_users |= (1 << scaler_user);
DRM_DEBUG_KMS("scaler_user index %u.%u: "
"staged scaling request for %ux%u->%ux%u scaler_users = 0x%x\n",
intel_crtc->pipe, scaler_user, src_w, src_h, dst_w, dst_h,
scaler_state->scaler_users);
return 0;
}
/**
* skl_update_scaler_crtc - Stages update to scaler state for a given crtc.
*
* @state: crtc's scaler state
*
* Return
* 0 - scaler_usage updated successfully
* error - requested scaling cannot be supported or other error condition
*/
int skl_update_scaler_crtc(struct intel_crtc_state *state)
{
const struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode;
bool need_scaler = false;
if (state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
need_scaler = true;
return skl_update_scaler(state, !state->base.active, SKL_CRTC_INDEX,
&state->scaler_state.scaler_id,
state->pipe_src_w, state->pipe_src_h,
adjusted_mode->crtc_hdisplay,
adjusted_mode->crtc_vdisplay, NULL, need_scaler);
}
/**
* skl_update_scaler_plane - Stages update to scaler state for a given plane.
* @crtc_state: crtc's scaler state
* @plane_state: atomic plane state to update
*
* Return
* 0 - scaler_usage updated successfully
* error - requested scaling cannot be supported or other error condition
*/
static int skl_update_scaler_plane(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
struct intel_plane *intel_plane =
to_intel_plane(plane_state->base.plane);
struct drm_i915_private *dev_priv = to_i915(intel_plane->base.dev);
struct drm_framebuffer *fb = plane_state->base.fb;
int ret;
bool force_detach = !fb || !plane_state->base.visible;
bool need_scaler = false;
/* Pre-gen11 and SDR planes always need a scaler for planar formats. */
if (!icl_is_hdr_plane(dev_priv, intel_plane->id) &&
fb && drm_format_info_is_yuv_semiplanar(fb->format))
need_scaler = true;
ret = skl_update_scaler(crtc_state, force_detach,
drm_plane_index(&intel_plane->base),
&plane_state->scaler_id,
drm_rect_width(&plane_state->base.src) >> 16,
drm_rect_height(&plane_state->base.src) >> 16,
drm_rect_width(&plane_state->base.dst),
drm_rect_height(&plane_state->base.dst),
fb ? fb->format : NULL, need_scaler);
if (ret || plane_state->scaler_id < 0)
return ret;
/* check colorkey */
if (plane_state->ckey.flags) {
DRM_DEBUG_KMS("[PLANE:%d:%s] scaling with color key not allowed",
intel_plane->base.base.id,
intel_plane->base.name);
return -EINVAL;
}
/* Check src format */
switch (fb->format->format) {
case DRM_FORMAT_RGB565:
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ABGR8888:
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_XRGB2101010:
case DRM_FORMAT_XBGR2101010:
case DRM_FORMAT_YUYV:
case DRM_FORMAT_YVYU:
case DRM_FORMAT_UYVY:
case DRM_FORMAT_VYUY:
case DRM_FORMAT_NV12:
case DRM_FORMAT_P010:
case DRM_FORMAT_P012:
case DRM_FORMAT_P016:
case DRM_FORMAT_Y210:
case DRM_FORMAT_Y212:
case DRM_FORMAT_Y216:
case DRM_FORMAT_XVYU2101010:
case DRM_FORMAT_XVYU12_16161616:
case DRM_FORMAT_XVYU16161616:
break;
case DRM_FORMAT_XBGR16161616F:
case DRM_FORMAT_ABGR16161616F:
case DRM_FORMAT_XRGB16161616F:
case DRM_FORMAT_ARGB16161616F:
if (INTEL_GEN(dev_priv) >= 11)
break;
/* fall through */
default:
DRM_DEBUG_KMS("[PLANE:%d:%s] FB:%d unsupported scaling format 0x%x\n",
intel_plane->base.base.id, intel_plane->base.name,
fb->base.id, fb->format->format);
return -EINVAL;
}
return 0;
}
static void skylake_scaler_disable(struct intel_crtc *crtc)
{
int i;
for (i = 0; i < crtc->num_scalers; i++)
skl_detach_scaler(crtc, i);
}
static void skylake_pfit_enable(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
const struct intel_crtc_scaler_state *scaler_state =
&crtc_state->scaler_state;
if (crtc_state->pch_pfit.enabled) {
u16 uv_rgb_hphase, uv_rgb_vphase;
int pfit_w, pfit_h, hscale, vscale;
int id;
if (WARN_ON(crtc_state->scaler_state.scaler_id < 0))
return;
pfit_w = (crtc_state->pch_pfit.size >> 16) & 0xFFFF;
pfit_h = crtc_state->pch_pfit.size & 0xFFFF;
hscale = (crtc_state->pipe_src_w << 16) / pfit_w;
vscale = (crtc_state->pipe_src_h << 16) / pfit_h;
uv_rgb_hphase = skl_scaler_calc_phase(1, hscale, false);
uv_rgb_vphase = skl_scaler_calc_phase(1, vscale, false);
id = scaler_state->scaler_id;
I915_WRITE(SKL_PS_CTRL(pipe, id), PS_SCALER_EN |
PS_FILTER_MEDIUM | scaler_state->scalers[id].mode);
I915_WRITE_FW(SKL_PS_VPHASE(pipe, id),
PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_vphase));
I915_WRITE_FW(SKL_PS_HPHASE(pipe, id),
PS_Y_PHASE(0) | PS_UV_RGB_PHASE(uv_rgb_hphase));
I915_WRITE(SKL_PS_WIN_POS(pipe, id), crtc_state->pch_pfit.pos);
I915_WRITE(SKL_PS_WIN_SZ(pipe, id), crtc_state->pch_pfit.size);
}
}
static void ironlake_pfit_enable(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
if (crtc_state->pch_pfit.enabled) {
/* Force use of hard-coded filter coefficients
* as some pre-programmed values are broken,
* e.g. x201.
*/
if (IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv))
I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3 |
PF_PIPE_SEL_IVB(pipe));
else
I915_WRITE(PF_CTL(pipe), PF_ENABLE | PF_FILTER_MED_3x3);
I915_WRITE(PF_WIN_POS(pipe), crtc_state->pch_pfit.pos);
I915_WRITE(PF_WIN_SZ(pipe), crtc_state->pch_pfit.size);
}
}
void hsw_enable_ips(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (!crtc_state->ips_enabled)
return;
/*
* We can only enable IPS after we enable a plane and wait for a vblank
* This function is called from post_plane_update, which is run after
* a vblank wait.
*/
WARN_ON(!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)));
if (IS_BROADWELL(dev_priv)) {
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL,
IPS_ENABLE | IPS_PCODE_CONTROL));
/* Quoting Art Runyan: "its not safe to expect any particular
* value in IPS_CTL bit 31 after enabling IPS through the
* mailbox." Moreover, the mailbox may return a bogus state,
* so we need to just enable it and continue on.
*/
} else {
I915_WRITE(IPS_CTL, IPS_ENABLE);
/* The bit only becomes 1 in the next vblank, so this wait here
* is essentially intel_wait_for_vblank. If we don't have this
* and don't wait for vblanks until the end of crtc_enable, then
* the HW state readout code will complain that the expected
* IPS_CTL value is not the one we read. */
if (intel_de_wait_for_set(dev_priv, IPS_CTL, IPS_ENABLE, 50))
DRM_ERROR("Timed out waiting for IPS enable\n");
}
}
void hsw_disable_ips(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
if (!crtc_state->ips_enabled)
return;
if (IS_BROADWELL(dev_priv)) {
WARN_ON(sandybridge_pcode_write(dev_priv, DISPLAY_IPS_CONTROL, 0));
/*
* Wait for PCODE to finish disabling IPS. The BSpec specified
* 42ms timeout value leads to occasional timeouts so use 100ms
* instead.
*/
if (intel_de_wait_for_clear(dev_priv, IPS_CTL, IPS_ENABLE, 100))
DRM_ERROR("Timed out waiting for IPS disable\n");
} else {
I915_WRITE(IPS_CTL, 0);
POSTING_READ(IPS_CTL);
}
/* We need to wait for a vblank before we can disable the plane. */
intel_wait_for_vblank(dev_priv, crtc->pipe);
}
static void intel_crtc_dpms_overlay_disable(struct intel_crtc *intel_crtc)
{
if (intel_crtc->overlay)
(void) intel_overlay_switch_off(intel_crtc->overlay);
/* Let userspace switch the overlay on again. In most cases userspace
* has to recompute where to put it anyway.
*/
}
/**
* intel_post_enable_primary - Perform operations after enabling primary plane
* @crtc: the CRTC whose primary plane was just enabled
* @new_crtc_state: the enabling state
*
* Performs potentially sleeping operations that must be done after the primary
* plane is enabled, such as updating FBC and IPS. Note that this may be
* called due to an explicit primary plane update, or due to an implicit
* re-enable that is caused when a sprite plane is updated to no longer
* completely hide the primary plane.
*/
static void
intel_post_enable_primary(struct drm_crtc *crtc,
const struct intel_crtc_state *new_crtc_state)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
/*
* Gen2 reports pipe underruns whenever all planes are disabled.
* So don't enable underrun reporting before at least some planes
* are enabled.
* FIXME: Need to fix the logic to work when we turn off all planes
* but leave the pipe running.
*/
if (IS_GEN(dev_priv, 2))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
/* Underruns don't always raise interrupts, so check manually. */
intel_check_cpu_fifo_underruns(dev_priv);
intel_check_pch_fifo_underruns(dev_priv);
}
/* FIXME get rid of this and use pre_plane_update */
static void
intel_pre_disable_primary_noatomic(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
/*
* Gen2 reports pipe underruns whenever all planes are disabled.
* So disable underrun reporting before all the planes get disabled.
*/
if (IS_GEN(dev_priv, 2))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
hsw_disable_ips(to_intel_crtc_state(crtc->state));
/*
* Vblank time updates from the shadow to live plane control register
* are blocked if the memory self-refresh mode is active at that
* moment. So to make sure the plane gets truly disabled, disable
* first the self-refresh mode. The self-refresh enable bit in turn
* will be checked/applied by the HW only at the next frame start
* event which is after the vblank start event, so we need to have a
* wait-for-vblank between disabling the plane and the pipe.
*/
if (HAS_GMCH(dev_priv) &&
intel_set_memory_cxsr(dev_priv, false))
intel_wait_for_vblank(dev_priv, pipe);
}
static bool hsw_pre_update_disable_ips(const struct intel_crtc_state *old_crtc_state,
const struct intel_crtc_state *new_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (!old_crtc_state->ips_enabled)
return false;
if (needs_modeset(new_crtc_state))
return true;
/*
* Workaround : Do not read or write the pipe palette/gamma data while
* GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
*
* Disable IPS before we program the LUT.
*/
if (IS_HASWELL(dev_priv) &&
(new_crtc_state->base.color_mgmt_changed ||
new_crtc_state->update_pipe) &&
new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
return true;
return !new_crtc_state->ips_enabled;
}
static bool hsw_post_update_enable_ips(const struct intel_crtc_state *old_crtc_state,
const struct intel_crtc_state *new_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (!new_crtc_state->ips_enabled)
return false;
if (needs_modeset(new_crtc_state))
return true;
/*
* Workaround : Do not read or write the pipe palette/gamma data while
* GAMMA_MODE is configured for split gamma and IPS_CTL has IPS enabled.
*
* Re-enable IPS after the LUT has been programmed.
*/
if (IS_HASWELL(dev_priv) &&
(new_crtc_state->base.color_mgmt_changed ||
new_crtc_state->update_pipe) &&
new_crtc_state->gamma_mode == GAMMA_MODE_MODE_SPLIT)
return true;
/*
* We can't read out IPS on broadwell, assume the worst and
* forcibly enable IPS on the first fastset.
*/
if (new_crtc_state->update_pipe &&
old_crtc_state->base.adjusted_mode.private_flags & I915_MODE_FLAG_INHERITED)
return true;
return !old_crtc_state->ips_enabled;
}
static bool needs_nv12_wa(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *crtc_state)
{
if (!crtc_state->nv12_planes)
return false;
/* WA Display #0827: Gen9:all */
if (IS_GEN(dev_priv, 9) && !IS_GEMINILAKE(dev_priv))
return true;
return false;
}
static bool needs_scalerclk_wa(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *crtc_state)
{
/* Wa_2006604312:icl */
if (crtc_state->scaler_state.scaler_users > 0 && IS_ICELAKE(dev_priv))
return true;
return false;
}
static void intel_post_plane_update(struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state = old_crtc_state->base.state;
struct intel_crtc_state *pipe_config =
intel_atomic_get_new_crtc_state(to_intel_atomic_state(state),
crtc);
struct drm_plane *primary = crtc->base.primary;
struct drm_plane_state *old_primary_state =
drm_atomic_get_old_plane_state(state, primary);
intel_frontbuffer_flip(to_i915(crtc->base.dev), pipe_config->fb_bits);
if (pipe_config->update_wm_post && pipe_config->base.active)
intel_update_watermarks(crtc);
if (hsw_post_update_enable_ips(old_crtc_state, pipe_config))
hsw_enable_ips(pipe_config);
if (old_primary_state) {
struct drm_plane_state *new_primary_state =
drm_atomic_get_new_plane_state(state, primary);
intel_fbc_post_update(crtc);
if (new_primary_state->visible &&
(needs_modeset(pipe_config) ||
!old_primary_state->visible))
intel_post_enable_primary(&crtc->base, pipe_config);
}
if (needs_nv12_wa(dev_priv, old_crtc_state) &&
!needs_nv12_wa(dev_priv, pipe_config))
skl_wa_827(dev_priv, crtc->pipe, false);
if (needs_scalerclk_wa(dev_priv, old_crtc_state) &&
!needs_scalerclk_wa(dev_priv, pipe_config))
icl_wa_scalerclkgating(dev_priv, crtc->pipe, false);
}
static void intel_pre_plane_update(struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *pipe_config)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state = old_crtc_state->base.state;
struct drm_plane *primary = crtc->base.primary;
struct drm_plane_state *old_primary_state =
drm_atomic_get_old_plane_state(state, primary);
bool modeset = needs_modeset(pipe_config);
struct intel_atomic_state *intel_state =
to_intel_atomic_state(state);
if (hsw_pre_update_disable_ips(old_crtc_state, pipe_config))
hsw_disable_ips(old_crtc_state);
if (old_primary_state) {
struct intel_plane_state *new_primary_state =
intel_atomic_get_new_plane_state(intel_state,
to_intel_plane(primary));
intel_fbc_pre_update(crtc, pipe_config, new_primary_state);
/*
* Gen2 reports pipe underruns whenever all planes are disabled.
* So disable underrun reporting before all the planes get disabled.
*/
if (IS_GEN(dev_priv, 2) && old_primary_state->visible &&
(modeset || !new_primary_state->base.visible))
intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, false);
}
/* Display WA 827 */
if (!needs_nv12_wa(dev_priv, old_crtc_state) &&
needs_nv12_wa(dev_priv, pipe_config))
skl_wa_827(dev_priv, crtc->pipe, true);
/* Wa_2006604312:icl */
if (!needs_scalerclk_wa(dev_priv, old_crtc_state) &&
needs_scalerclk_wa(dev_priv, pipe_config))
icl_wa_scalerclkgating(dev_priv, crtc->pipe, true);
/*
* Vblank time updates from the shadow to live plane control register
* are blocked if the memory self-refresh mode is active at that
* moment. So to make sure the plane gets truly disabled, disable
* first the self-refresh mode. The self-refresh enable bit in turn
* will be checked/applied by the HW only at the next frame start
* event which is after the vblank start event, so we need to have a
* wait-for-vblank between disabling the plane and the pipe.
*/
if (HAS_GMCH(dev_priv) && old_crtc_state->base.active &&
pipe_config->disable_cxsr && intel_set_memory_cxsr(dev_priv, false))
intel_wait_for_vblank(dev_priv, crtc->pipe);
/*
* IVB workaround: must disable low power watermarks for at least
* one frame before enabling scaling. LP watermarks can be re-enabled
* when scaling is disabled.
*
* WaCxSRDisabledForSpriteScaling:ivb
*/
if (pipe_config->disable_lp_wm && ilk_disable_lp_wm(dev) &&
old_crtc_state->base.active)
intel_wait_for_vblank(dev_priv, crtc->pipe);
/*
* If we're doing a modeset, we're done. No need to do any pre-vblank
* watermark programming here.
*/
if (needs_modeset(pipe_config))
return;
/*
* For platforms that support atomic watermarks, program the
* 'intermediate' watermarks immediately. On pre-gen9 platforms, these
* will be the intermediate values that are safe for both pre- and
* post- vblank; when vblank happens, the 'active' values will be set
* to the final 'target' values and we'll do this again to get the
* optimal watermarks. For gen9+ platforms, the values we program here
* will be the final target values which will get automatically latched
* at vblank time; no further programming will be necessary.
*
* If a platform hasn't been transitioned to atomic watermarks yet,
* we'll continue to update watermarks the old way, if flags tell
* us to.
*/
if (dev_priv->display.initial_watermarks != NULL)
dev_priv->display.initial_watermarks(intel_state,
pipe_config);
else if (pipe_config->update_wm_pre)
intel_update_watermarks(crtc);
}
static void intel_crtc_disable_planes(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
const struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
unsigned int update_mask = new_crtc_state->update_planes;
const struct intel_plane_state *old_plane_state;
struct intel_plane *plane;
unsigned fb_bits = 0;
int i;
intel_crtc_dpms_overlay_disable(crtc);
for_each_old_intel_plane_in_state(state, plane, old_plane_state, i) {
if (crtc->pipe != plane->pipe ||
!(update_mask & BIT(plane->id)))
continue;
intel_disable_plane(plane, new_crtc_state);
if (old_plane_state->base.visible)
fb_bits |= plane->frontbuffer_bit;
}
intel_frontbuffer_flip(dev_priv, fb_bits);
}
/*
* intel_connector_primary_encoder - get the primary encoder for a connector
* @connector: connector for which to return the encoder
*
* Returns the primary encoder for a connector. There is a 1:1 mapping from
* all connectors to their encoder, except for DP-MST connectors which have
* both a virtual and a primary encoder. These DP-MST primary encoders can be
* pointed to by as many DP-MST connectors as there are pipes.
*/
static struct intel_encoder *
intel_connector_primary_encoder(struct intel_connector *connector)
{
struct intel_encoder *encoder;
if (connector->mst_port)
return &dp_to_dig_port(connector->mst_port)->base;
encoder = intel_attached_encoder(&connector->base);
WARN_ON(!encoder);
return encoder;
}
static bool
intel_connector_needs_modeset(struct intel_atomic_state *state,
const struct drm_connector_state *old_conn_state,
const struct drm_connector_state *new_conn_state)
{
struct intel_crtc *old_crtc = old_conn_state->crtc ?
to_intel_crtc(old_conn_state->crtc) : NULL;
struct intel_crtc *new_crtc = new_conn_state->crtc ?
to_intel_crtc(new_conn_state->crtc) : NULL;
return new_crtc != old_crtc ||
(new_crtc &&
needs_modeset(intel_atomic_get_new_crtc_state(state, new_crtc)));
}
static void intel_encoders_update_prepare(struct intel_atomic_state *state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector_state *new_conn_state;
struct drm_connector *conn;
int i;
for_each_oldnew_connector_in_state(&state->base, conn,
old_conn_state, new_conn_state, i) {
struct intel_encoder *encoder;
struct intel_crtc *crtc;
if (!intel_connector_needs_modeset(state,
old_conn_state,
new_conn_state))
continue;
encoder = intel_connector_primary_encoder(to_intel_connector(conn));
if (!encoder->update_prepare)
continue;
crtc = new_conn_state->crtc ?
to_intel_crtc(new_conn_state->crtc) : NULL;
encoder->update_prepare(state, encoder, crtc);
}
}
static void intel_encoders_update_complete(struct intel_atomic_state *state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector_state *new_conn_state;
struct drm_connector *conn;
int i;
for_each_oldnew_connector_in_state(&state->base, conn,
old_conn_state, new_conn_state, i) {
struct intel_encoder *encoder;
struct intel_crtc *crtc;
if (!intel_connector_needs_modeset(state,
old_conn_state,
new_conn_state))
continue;
encoder = intel_connector_primary_encoder(to_intel_connector(conn));
if (!encoder->update_complete)
continue;
crtc = new_conn_state->crtc ?
to_intel_crtc(new_conn_state->crtc) : NULL;
encoder->update_complete(state, encoder, crtc);
}
}
static void intel_encoders_pre_pll_enable(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct intel_atomic_state *state)
{
struct drm_connector_state *conn_state;
struct drm_connector *conn;
int i;
for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(conn_state->best_encoder);
if (conn_state->crtc != &crtc->base)
continue;
if (encoder->pre_pll_enable)
encoder->pre_pll_enable(encoder, crtc_state, conn_state);
}
}
static void intel_encoders_pre_enable(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct intel_atomic_state *state)
{
struct drm_connector_state *conn_state;
struct drm_connector *conn;
int i;
for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(conn_state->best_encoder);
if (conn_state->crtc != &crtc->base)
continue;
if (encoder->pre_enable)
encoder->pre_enable(encoder, crtc_state, conn_state);
}
}
static void intel_encoders_enable(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct intel_atomic_state *state)
{
struct drm_connector_state *conn_state;
struct drm_connector *conn;
int i;
for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(conn_state->best_encoder);
if (conn_state->crtc != &crtc->base)
continue;
if (encoder->enable)
encoder->enable(encoder, crtc_state, conn_state);
intel_opregion_notify_encoder(encoder, true);
}
}
static void intel_encoders_disable(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_atomic_state *state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(old_conn_state->best_encoder);
if (old_conn_state->crtc != &crtc->base)
continue;
intel_opregion_notify_encoder(encoder, false);
if (encoder->disable)
encoder->disable(encoder, old_crtc_state, old_conn_state);
}
}
static void intel_encoders_post_disable(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_atomic_state *state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(old_conn_state->best_encoder);
if (old_conn_state->crtc != &crtc->base)
continue;
if (encoder->post_disable)
encoder->post_disable(encoder, old_crtc_state, old_conn_state);
}
}
static void intel_encoders_post_pll_disable(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_atomic_state *state)
{
struct drm_connector_state *old_conn_state;
struct drm_connector *conn;
int i;
for_each_old_connector_in_state(&state->base, conn, old_conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(old_conn_state->best_encoder);
if (old_conn_state->crtc != &crtc->base)
continue;
if (encoder->post_pll_disable)
encoder->post_pll_disable(encoder, old_crtc_state, old_conn_state);
}
}
static void intel_encoders_update_pipe(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct intel_atomic_state *state)
{
struct drm_connector_state *conn_state;
struct drm_connector *conn;
int i;
for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
struct intel_encoder *encoder =
to_intel_encoder(conn_state->best_encoder);
if (conn_state->crtc != &crtc->base)
continue;
if (encoder->update_pipe)
encoder->update_pipe(encoder, crtc_state, conn_state);
}
}
static void intel_disable_primary_plane(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct intel_plane *plane = to_intel_plane(crtc->base.primary);
plane->disable_plane(plane, crtc_state);
}
static void ironlake_crtc_enable(struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
if (WARN_ON(intel_crtc->active))
return;
/*
* Sometimes spurious CPU pipe underruns happen during FDI
* training, at least with VGA+HDMI cloning. Suppress them.
*
* On ILK we get an occasional spurious CPU pipe underruns
* between eDP port A enable and vdd enable. Also PCH port
* enable seems to result in the occasional CPU pipe underrun.
*
* Spurious PCH underruns also occur during PCH enabling.
*/
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
if (pipe_config->has_pch_encoder)
intel_prepare_shared_dpll(pipe_config);
if (intel_crtc_has_dp_encoder(pipe_config))
intel_dp_set_m_n(pipe_config, M1_N1);
intel_set_pipe_timings(pipe_config);
intel_set_pipe_src_size(pipe_config);
if (pipe_config->has_pch_encoder) {
intel_cpu_transcoder_set_m_n(pipe_config,
&pipe_config->fdi_m_n, NULL);
}
ironlake_set_pipeconf(pipe_config);
intel_crtc->active = true;
intel_encoders_pre_enable(intel_crtc, pipe_config, state);
if (pipe_config->has_pch_encoder) {
/* Note: FDI PLL enabling _must_ be done before we enable the
* cpu pipes, hence this is separate from all the other fdi/pch
* enabling. */
ironlake_fdi_pll_enable(pipe_config);
} else {
assert_fdi_tx_disabled(dev_priv, pipe);
assert_fdi_rx_disabled(dev_priv, pipe);
}
ironlake_pfit_enable(pipe_config);
/*
* On ILK+ LUT must be loaded before the pipe is running but with
* clocks enabled
*/
intel_color_load_luts(pipe_config);
intel_color_commit(pipe_config);
/* update DSPCNTR to configure gamma for pipe bottom color */
intel_disable_primary_plane(pipe_config);
if (dev_priv->display.initial_watermarks != NULL)
dev_priv->display.initial_watermarks(state, pipe_config);
intel_enable_pipe(pipe_config);
if (pipe_config->has_pch_encoder)
ironlake_pch_enable(state, pipe_config);
assert_vblank_disabled(crtc);
intel_crtc_vblank_on(pipe_config);
intel_encoders_enable(intel_crtc, pipe_config, state);
if (HAS_PCH_CPT(dev_priv))
cpt_verify_modeset(dev, intel_crtc->pipe);
/*
* Must wait for vblank to avoid spurious PCH FIFO underruns.
* And a second vblank wait is needed at least on ILK with
* some interlaced HDMI modes. Let's do the double wait always
* in case there are more corner cases we don't know about.
*/
if (pipe_config->has_pch_encoder) {
intel_wait_for_vblank(dev_priv, pipe);
intel_wait_for_vblank(dev_priv, pipe);
}
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
}
/* IPS only exists on ULT machines and is tied to pipe A. */
static bool hsw_crtc_supports_ips(struct intel_crtc *crtc)
{
return HAS_IPS(to_i915(crtc->base.dev)) && crtc->pipe == PIPE_A;
}
static void glk_pipe_scaler_clock_gating_wa(struct drm_i915_private *dev_priv,
enum pipe pipe, bool apply)
{
u32 val = I915_READ(CLKGATE_DIS_PSL(pipe));
u32 mask = DPF_GATING_DIS | DPF_RAM_GATING_DIS | DPFR_GATING_DIS;
if (apply)
val |= mask;
else
val &= ~mask;
I915_WRITE(CLKGATE_DIS_PSL(pipe), val);
}
static void icl_pipe_mbus_enable(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
u32 val;
val = MBUS_DBOX_A_CREDIT(2);
if (INTEL_GEN(dev_priv) >= 12) {
val |= MBUS_DBOX_BW_CREDIT(2);
val |= MBUS_DBOX_B_CREDIT(12);
} else {
val |= MBUS_DBOX_BW_CREDIT(1);
val |= MBUS_DBOX_B_CREDIT(8);
}
I915_WRITE(PIPE_MBUS_DBOX_CTL(pipe), val);
}
static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe, hsw_workaround_pipe;
enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
bool psl_clkgate_wa;
if (WARN_ON(intel_crtc->active))
return;
intel_encoders_pre_pll_enable(intel_crtc, pipe_config, state);
if (pipe_config->shared_dpll)
intel_enable_shared_dpll(pipe_config);
intel_encoders_pre_enable(intel_crtc, pipe_config, state);
if (intel_crtc_has_dp_encoder(pipe_config))
intel_dp_set_m_n(pipe_config, M1_N1);
if (!transcoder_is_dsi(cpu_transcoder))
intel_set_pipe_timings(pipe_config);
if (INTEL_GEN(dev_priv) >= 11)
icl_enable_trans_port_sync(pipe_config);
intel_set_pipe_src_size(pipe_config);
if (cpu_transcoder != TRANSCODER_EDP &&
!transcoder_is_dsi(cpu_transcoder)) {
I915_WRITE(PIPE_MULT(cpu_transcoder),
pipe_config->pixel_multiplier - 1);
}
if (pipe_config->has_pch_encoder) {
intel_cpu_transcoder_set_m_n(pipe_config,
&pipe_config->fdi_m_n, NULL);
}
if (!transcoder_is_dsi(cpu_transcoder))
haswell_set_pipeconf(pipe_config);
if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
bdw_set_pipemisc(pipe_config);
intel_crtc->active = true;
/* Display WA #1180: WaDisableScalarClockGating: glk, cnl */
psl_clkgate_wa = (IS_GEMINILAKE(dev_priv) || IS_CANNONLAKE(dev_priv)) &&
pipe_config->pch_pfit.enabled;
if (psl_clkgate_wa)
glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, true);
if (INTEL_GEN(dev_priv) >= 9)
skylake_pfit_enable(pipe_config);
else
ironlake_pfit_enable(pipe_config);
/*
* On ILK+ LUT must be loaded before the pipe is running but with
* clocks enabled
*/
intel_color_load_luts(pipe_config);
intel_color_commit(pipe_config);
/* update DSPCNTR to configure gamma/csc for pipe bottom color */
if (INTEL_GEN(dev_priv) < 9)
intel_disable_primary_plane(pipe_config);
if (INTEL_GEN(dev_priv) >= 11)
icl_set_pipe_chicken(intel_crtc);
if (!transcoder_is_dsi(cpu_transcoder))
intel_ddi_enable_transcoder_func(pipe_config);
if (dev_priv->display.initial_watermarks != NULL)
dev_priv->display.initial_watermarks(state, pipe_config);
if (INTEL_GEN(dev_priv) >= 11)
icl_pipe_mbus_enable(intel_crtc);
/* XXX: Do the pipe assertions at the right place for BXT DSI. */
if (!transcoder_is_dsi(cpu_transcoder))
intel_enable_pipe(pipe_config);
if (pipe_config->has_pch_encoder)
lpt_pch_enable(state, pipe_config);
if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST))
intel_ddi_set_vc_payload_alloc(pipe_config, true);
assert_vblank_disabled(crtc);
intel_crtc_vblank_on(pipe_config);
intel_encoders_enable(intel_crtc, pipe_config, state);
if (psl_clkgate_wa) {
intel_wait_for_vblank(dev_priv, pipe);
glk_pipe_scaler_clock_gating_wa(dev_priv, pipe, false);
}
/* If we change the relative order between pipe/planes enabling, we need
* to change the workaround. */
hsw_workaround_pipe = pipe_config->hsw_workaround_pipe;
if (IS_HASWELL(dev_priv) && hsw_workaround_pipe != INVALID_PIPE) {
intel_wait_for_vblank(dev_priv, hsw_workaround_pipe);
intel_wait_for_vblank(dev_priv, hsw_workaround_pipe);
}
}
static void ironlake_pfit_disable(const struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
/* To avoid upsetting the power well on haswell only disable the pfit if
* it's in use. The hw state code will make sure we get this right. */
if (old_crtc_state->pch_pfit.enabled) {
I915_WRITE(PF_CTL(pipe), 0);
I915_WRITE(PF_WIN_POS(pipe), 0);
I915_WRITE(PF_WIN_SZ(pipe), 0);
}
}
static void ironlake_crtc_disable(struct intel_crtc_state *old_crtc_state,
struct intel_atomic_state *state)
{
struct drm_crtc *crtc = old_crtc_state->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
/*
* Sometimes spurious CPU pipe underruns happen when the
* pipe is already disabled, but FDI RX/TX is still enabled.
* Happens at least with VGA+HDMI cloning. Suppress them.
*/
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, false);
intel_encoders_disable(intel_crtc, old_crtc_state, state);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
intel_disable_pipe(old_crtc_state);
ironlake_pfit_disable(old_crtc_state);
if (old_crtc_state->has_pch_encoder)
ironlake_fdi_disable(crtc);
intel_encoders_post_disable(intel_crtc, old_crtc_state, state);
if (old_crtc_state->has_pch_encoder) {
ironlake_disable_pch_transcoder(dev_priv, pipe);
if (HAS_PCH_CPT(dev_priv)) {
i915_reg_t reg;
u32 temp;
/* disable TRANS_DP_CTL */
reg = TRANS_DP_CTL(pipe);
temp = I915_READ(reg);
temp &= ~(TRANS_DP_OUTPUT_ENABLE |
TRANS_DP_PORT_SEL_MASK);
temp |= TRANS_DP_PORT_SEL_NONE;
I915_WRITE(reg, temp);
/* disable DPLL_SEL */
temp = I915_READ(PCH_DPLL_SEL);
temp &= ~(TRANS_DPLL_ENABLE(pipe) | TRANS_DPLLB_SEL(pipe));
I915_WRITE(PCH_DPLL_SEL, temp);
}
ironlake_fdi_pll_disable(intel_crtc);
}
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_set_pch_fifo_underrun_reporting(dev_priv, pipe, true);
}
static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
struct intel_atomic_state *state)
{
struct drm_crtc *crtc = old_crtc_state->base.crtc;
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum transcoder cpu_transcoder = old_crtc_state->cpu_transcoder;
intel_encoders_disable(intel_crtc, old_crtc_state, state);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
/* XXX: Do the pipe assertions at the right place for BXT DSI. */
if (!transcoder_is_dsi(cpu_transcoder))
intel_disable_pipe(old_crtc_state);
if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST))
intel_ddi_set_vc_payload_alloc(old_crtc_state, false);
if (INTEL_GEN(dev_priv) >= 11)
icl_disable_transcoder_port_sync(old_crtc_state);
if (!transcoder_is_dsi(cpu_transcoder))
intel_ddi_disable_transcoder_func(old_crtc_state);
intel_dsc_disable(old_crtc_state);
if (INTEL_GEN(dev_priv) >= 9)
skylake_scaler_disable(intel_crtc);
else
ironlake_pfit_disable(old_crtc_state);
intel_encoders_post_disable(intel_crtc, old_crtc_state, state);
intel_encoders_post_pll_disable(intel_crtc, old_crtc_state, state);
}
static void i9xx_pfit_enable(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (!crtc_state->gmch_pfit.control)
return;
/*
* The panel fitter should only be adjusted whilst the pipe is disabled,
* according to register description and PRM.
*/
WARN_ON(I915_READ(PFIT_CONTROL) & PFIT_ENABLE);
assert_pipe_disabled(dev_priv, crtc->pipe);
I915_WRITE(PFIT_PGM_RATIOS, crtc_state->gmch_pfit.pgm_ratios);
I915_WRITE(PFIT_CONTROL, crtc_state->gmch_pfit.control);
/* Border color in case we don't scale up to the full screen. Black by
* default, change to something else for debugging. */
I915_WRITE(BCLRPAT(crtc->pipe), 0);
}
bool intel_phy_is_combo(struct drm_i915_private *dev_priv, enum phy phy)
{
if (phy == PHY_NONE)
return false;
if (IS_ELKHARTLAKE(dev_priv))
return phy <= PHY_C;
if (INTEL_GEN(dev_priv) >= 11)
return phy <= PHY_B;
return false;
}
bool intel_phy_is_tc(struct drm_i915_private *dev_priv, enum phy phy)
{
if (INTEL_GEN(dev_priv) >= 12)
return phy >= PHY_D && phy <= PHY_I;
if (INTEL_GEN(dev_priv) >= 11 && !IS_ELKHARTLAKE(dev_priv))
return phy >= PHY_C && phy <= PHY_F;
return false;
}
enum phy intel_port_to_phy(struct drm_i915_private *i915, enum port port)
{
if (IS_ELKHARTLAKE(i915) && port == PORT_D)
return PHY_A;
return (enum phy)port;
}
enum tc_port intel_port_to_tc(struct drm_i915_private *dev_priv, enum port port)
{
if (!intel_phy_is_tc(dev_priv, intel_port_to_phy(dev_priv, port)))
return PORT_TC_NONE;
if (INTEL_GEN(dev_priv) >= 12)
return port - PORT_D;
return port - PORT_C;
}
enum intel_display_power_domain intel_port_to_power_domain(enum port port)
{
switch (port) {
case PORT_A:
return POWER_DOMAIN_PORT_DDI_A_LANES;
case PORT_B:
return POWER_DOMAIN_PORT_DDI_B_LANES;
case PORT_C:
return POWER_DOMAIN_PORT_DDI_C_LANES;
case PORT_D:
return POWER_DOMAIN_PORT_DDI_D_LANES;
case PORT_E:
return POWER_DOMAIN_PORT_DDI_E_LANES;
case PORT_F:
return POWER_DOMAIN_PORT_DDI_F_LANES;
case PORT_G:
return POWER_DOMAIN_PORT_DDI_G_LANES;
default:
MISSING_CASE(port);
return POWER_DOMAIN_PORT_OTHER;
}
}
enum intel_display_power_domain
intel_aux_power_domain(struct intel_digital_port *dig_port)
{
struct drm_i915_private *dev_priv = to_i915(dig_port->base.base.dev);
enum phy phy = intel_port_to_phy(dev_priv, dig_port->base.port);
if (intel_phy_is_tc(dev_priv, phy) &&
dig_port->tc_mode == TC_PORT_TBT_ALT) {
switch (dig_port->aux_ch) {
case AUX_CH_C:
return POWER_DOMAIN_AUX_C_TBT;
case AUX_CH_D:
return POWER_DOMAIN_AUX_D_TBT;
case AUX_CH_E:
return POWER_DOMAIN_AUX_E_TBT;
case AUX_CH_F:
return POWER_DOMAIN_AUX_F_TBT;
case AUX_CH_G:
return POWER_DOMAIN_AUX_G_TBT;
default:
MISSING_CASE(dig_port->aux_ch);
return POWER_DOMAIN_AUX_C_TBT;
}
}
switch (dig_port->aux_ch) {
case AUX_CH_A:
return POWER_DOMAIN_AUX_A;
case AUX_CH_B:
return POWER_DOMAIN_AUX_B;
case AUX_CH_C:
return POWER_DOMAIN_AUX_C;
case AUX_CH_D:
return POWER_DOMAIN_AUX_D;
case AUX_CH_E:
return POWER_DOMAIN_AUX_E;
case AUX_CH_F:
return POWER_DOMAIN_AUX_F;
case AUX_CH_G:
return POWER_DOMAIN_AUX_G;
default:
MISSING_CASE(dig_port->aux_ch);
return POWER_DOMAIN_AUX_A;
}
}
static u64 get_crtc_power_domains(struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct drm_encoder *encoder;
enum pipe pipe = crtc->pipe;
u64 mask;
enum transcoder transcoder = crtc_state->cpu_transcoder;
if (!crtc_state->base.active)
return 0;
mask = BIT_ULL(POWER_DOMAIN_PIPE(pipe));
mask |= BIT_ULL(POWER_DOMAIN_TRANSCODER(transcoder));
if (crtc_state->pch_pfit.enabled ||
crtc_state->pch_pfit.force_thru)
mask |= BIT_ULL(POWER_DOMAIN_PIPE_PANEL_FITTER(pipe));
drm_for_each_encoder_mask(encoder, &dev_priv->drm,
crtc_state->base.encoder_mask) {
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
mask |= BIT_ULL(intel_encoder->power_domain);
}
if (HAS_DDI(dev_priv) && crtc_state->has_audio)
mask |= BIT_ULL(POWER_DOMAIN_AUDIO);
if (crtc_state->shared_dpll)
mask |= BIT_ULL(POWER_DOMAIN_DISPLAY_CORE);
return mask;
}
static u64
modeset_get_crtc_power_domains(struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum intel_display_power_domain domain;
u64 domains, new_domains, old_domains;
old_domains = crtc->enabled_power_domains;
crtc->enabled_power_domains = new_domains =
get_crtc_power_domains(crtc_state);
domains = new_domains & ~old_domains;
for_each_power_domain(domain, domains)
intel_display_power_get(dev_priv, domain);
return old_domains & ~new_domains;
}
static void modeset_put_power_domains(struct drm_i915_private *dev_priv,
u64 domains)
{
enum intel_display_power_domain domain;
for_each_power_domain(domain, domains)
intel_display_power_put_unchecked(dev_priv, domain);
}
static void valleyview_crtc_enable(struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
if (WARN_ON(intel_crtc->active))
return;
if (intel_crtc_has_dp_encoder(pipe_config))
intel_dp_set_m_n(pipe_config, M1_N1);
intel_set_pipe_timings(pipe_config);
intel_set_pipe_src_size(pipe_config);
if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
I915_WRITE(CHV_BLEND(pipe), CHV_BLEND_LEGACY);
I915_WRITE(CHV_CANVAS(pipe), 0);
}
i9xx_set_pipeconf(pipe_config);
intel_crtc->active = true;
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_encoders_pre_pll_enable(intel_crtc, pipe_config, state);
if (IS_CHERRYVIEW(dev_priv)) {
chv_prepare_pll(intel_crtc, pipe_config);
chv_enable_pll(intel_crtc, pipe_config);
} else {
vlv_prepare_pll(intel_crtc, pipe_config);
vlv_enable_pll(intel_crtc, pipe_config);
}
intel_encoders_pre_enable(intel_crtc, pipe_config, state);
i9xx_pfit_enable(pipe_config);
intel_color_load_luts(pipe_config);
intel_color_commit(pipe_config);
/* update DSPCNTR to configure gamma for pipe bottom color */
intel_disable_primary_plane(pipe_config);
dev_priv->display.initial_watermarks(state, pipe_config);
intel_enable_pipe(pipe_config);
assert_vblank_disabled(crtc);
intel_crtc_vblank_on(pipe_config);
intel_encoders_enable(intel_crtc, pipe_config, state);
}
static void i9xx_set_pll_dividers(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
I915_WRITE(FP0(crtc->pipe), crtc_state->dpll_hw_state.fp0);
I915_WRITE(FP1(crtc->pipe), crtc_state->dpll_hw_state.fp1);
}
static void i9xx_crtc_enable(struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
if (WARN_ON(intel_crtc->active))
return;
i9xx_set_pll_dividers(pipe_config);
if (intel_crtc_has_dp_encoder(pipe_config))
intel_dp_set_m_n(pipe_config, M1_N1);
intel_set_pipe_timings(pipe_config);
intel_set_pipe_src_size(pipe_config);
i9xx_set_pipeconf(pipe_config);
intel_crtc->active = true;
if (!IS_GEN(dev_priv, 2))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, true);
intel_encoders_pre_enable(intel_crtc, pipe_config, state);
i9xx_enable_pll(intel_crtc, pipe_config);
i9xx_pfit_enable(pipe_config);
intel_color_load_luts(pipe_config);
intel_color_commit(pipe_config);
/* update DSPCNTR to configure gamma for pipe bottom color */
intel_disable_primary_plane(pipe_config);
if (dev_priv->display.initial_watermarks != NULL)
dev_priv->display.initial_watermarks(state,
pipe_config);
else
intel_update_watermarks(intel_crtc);
intel_enable_pipe(pipe_config);
assert_vblank_disabled(crtc);
intel_crtc_vblank_on(pipe_config);
intel_encoders_enable(intel_crtc, pipe_config, state);
}
static void i9xx_pfit_disable(const struct intel_crtc_state *old_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (!old_crtc_state->gmch_pfit.control)
return;
assert_pipe_disabled(dev_priv, crtc->pipe);
DRM_DEBUG_KMS("disabling pfit, current: 0x%08x\n",
I915_READ(PFIT_CONTROL));
I915_WRITE(PFIT_CONTROL, 0);
}
static void i9xx_crtc_disable(struct intel_crtc_state *old_crtc_state,
struct intel_atomic_state *state)
{
struct drm_crtc *crtc = old_crtc_state->base.crtc;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
/*
* On gen2 planes are double buffered but the pipe isn't, so we must
* wait for planes to fully turn off before disabling the pipe.
*/
if (IS_GEN(dev_priv, 2))
intel_wait_for_vblank(dev_priv, pipe);
intel_encoders_disable(intel_crtc, old_crtc_state, state);
drm_crtc_vblank_off(crtc);
assert_vblank_disabled(crtc);
intel_disable_pipe(old_crtc_state);
i9xx_pfit_disable(old_crtc_state);
intel_encoders_post_disable(intel_crtc, old_crtc_state, state);
if (!intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DSI)) {
if (IS_CHERRYVIEW(dev_priv))
chv_disable_pll(dev_priv, pipe);
else if (IS_VALLEYVIEW(dev_priv))
vlv_disable_pll(dev_priv, pipe);
else
i9xx_disable_pll(old_crtc_state);
}
intel_encoders_post_pll_disable(intel_crtc, old_crtc_state, state);
if (!IS_GEN(dev_priv, 2))
intel_set_cpu_fifo_underrun_reporting(dev_priv, pipe, false);
if (!dev_priv->display.initial_watermarks)
intel_update_watermarks(intel_crtc);
/* clock the pipe down to 640x480@60 to potentially save power */
if (IS_I830(dev_priv))
i830_enable_pipe(dev_priv, pipe);
}
static void intel_crtc_disable_noatomic(struct drm_crtc *crtc,
struct drm_modeset_acquire_ctx *ctx)
{
struct intel_encoder *encoder;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->dev);
struct intel_bw_state *bw_state =
to_intel_bw_state(dev_priv->bw_obj.state);
enum intel_display_power_domain domain;
struct intel_plane *plane;
u64 domains;
struct drm_atomic_state *state;
struct intel_crtc_state *crtc_state;
int ret;
if (!intel_crtc->active)
return;
for_each_intel_plane_on_crtc(&dev_priv->drm, intel_crtc, plane) {
const struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
if (plane_state->base.visible)
intel_plane_disable_noatomic(intel_crtc, plane);
}
state = drm_atomic_state_alloc(crtc->dev);
if (!state) {
DRM_DEBUG_KMS("failed to disable [CRTC:%d:%s], out of memory",
crtc->base.id, crtc->name);
return;
}
state->acquire_ctx = ctx;
/* Everything's already locked, -EDEADLK can't happen. */
crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
ret = drm_atomic_add_affected_connectors(state, crtc);
WARN_ON(IS_ERR(crtc_state) || ret);
dev_priv->display.crtc_disable(crtc_state, to_intel_atomic_state(state));
drm_atomic_state_put(state);
DRM_DEBUG_KMS("[CRTC:%d:%s] hw state adjusted, was enabled, now disabled\n",
crtc->base.id, crtc->name);
WARN_ON(drm_atomic_set_mode_for_crtc(crtc->state, NULL) < 0);
crtc->state->active = false;
intel_crtc->active = false;
crtc->enabled = false;
crtc->state->connector_mask = 0;
crtc->state->encoder_mask = 0;
for_each_encoder_on_crtc(crtc->dev, crtc, encoder)
encoder->base.crtc = NULL;
intel_fbc_disable(intel_crtc);
intel_update_watermarks(intel_crtc);
intel_disable_shared_dpll(to_intel_crtc_state(crtc->state));
domains = intel_crtc->enabled_power_domains;
for_each_power_domain(domain, domains)
intel_display_power_put_unchecked(dev_priv, domain);
intel_crtc->enabled_power_domains = 0;
dev_priv->active_pipes &= ~BIT(intel_crtc->pipe);
dev_priv->min_cdclk[intel_crtc->pipe] = 0;
dev_priv->min_voltage_level[intel_crtc->pipe] = 0;
bw_state->data_rate[intel_crtc->pipe] = 0;
bw_state->num_active_planes[intel_crtc->pipe] = 0;
}
/*
* turn all crtc's off, but do not adjust state
* This has to be paired with a call to intel_modeset_setup_hw_state.
*/
int intel_display_suspend(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state;
int ret;
state = drm_atomic_helper_suspend(dev);
ret = PTR_ERR_OR_ZERO(state);
if (ret)
DRM_ERROR("Suspending crtc's failed with %i\n", ret);
else
dev_priv->modeset_restore_state = state;
return ret;
}
void intel_encoder_destroy(struct drm_encoder *encoder)
{
struct intel_encoder *intel_encoder = to_intel_encoder(encoder);
drm_encoder_cleanup(encoder);
kfree(intel_encoder);
}
/* Cross check the actual hw state with our own modeset state tracking (and it's
* internal consistency). */
static void intel_connector_verify_state(struct intel_crtc_state *crtc_state,
struct drm_connector_state *conn_state)
{
struct intel_connector *connector = to_intel_connector(conn_state->connector);
DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n",
connector->base.base.id,
connector->base.name);
if (connector->get_hw_state(connector)) {
struct intel_encoder *encoder = connector->encoder;
I915_STATE_WARN(!crtc_state,
"connector enabled without attached crtc\n");
if (!crtc_state)
return;
I915_STATE_WARN(!crtc_state->base.active,
"connector is active, but attached crtc isn't\n");
if (!encoder || encoder->type == INTEL_OUTPUT_DP_MST)
return;
I915_STATE_WARN(conn_state->best_encoder != &encoder->base,
"atomic encoder doesn't match attached encoder\n");
I915_STATE_WARN(conn_state->crtc != encoder->base.crtc,
"attached encoder crtc differs from connector crtc\n");
} else {
I915_STATE_WARN(crtc_state && crtc_state->base.active,
"attached crtc is active, but connector isn't\n");
I915_STATE_WARN(!crtc_state && conn_state->best_encoder,
"best encoder set without crtc!\n");
}
}
static int pipe_required_fdi_lanes(struct intel_crtc_state *crtc_state)
{
if (crtc_state->base.enable && crtc_state->has_pch_encoder)
return crtc_state->fdi_lanes;
return 0;
}
static int ironlake_check_fdi_lanes(struct drm_device *dev, enum pipe pipe,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state = pipe_config->base.state;
struct intel_crtc *other_crtc;
struct intel_crtc_state *other_crtc_state;
DRM_DEBUG_KMS("checking fdi config on pipe %c, lanes %i\n",
pipe_name(pipe), pipe_config->fdi_lanes);
if (pipe_config->fdi_lanes > 4) {
DRM_DEBUG_KMS("invalid fdi lane config on pipe %c: %i lanes\n",
pipe_name(pipe), pipe_config->fdi_lanes);
return -EINVAL;
}
if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
if (pipe_config->fdi_lanes > 2) {
DRM_DEBUG_KMS("only 2 lanes on haswell, required: %i lanes\n",
pipe_config->fdi_lanes);
return -EINVAL;
} else {
return 0;
}
}
if (INTEL_NUM_PIPES(dev_priv) == 2)
return 0;
/* Ivybridge 3 pipe is really complicated */
switch (pipe) {
case PIPE_A:
return 0;
case PIPE_B:
if (pipe_config->fdi_lanes <= 2)
return 0;
other_crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_C);
other_crtc_state =
intel_atomic_get_crtc_state(state, other_crtc);
if (IS_ERR(other_crtc_state))
return PTR_ERR(other_crtc_state);
if (pipe_required_fdi_lanes(other_crtc_state) > 0) {
DRM_DEBUG_KMS("invalid shared fdi lane config on pipe %c: %i lanes\n",
pipe_name(pipe), pipe_config->fdi_lanes);
return -EINVAL;
}
return 0;
case PIPE_C:
if (pipe_config->fdi_lanes > 2) {
DRM_DEBUG_KMS("only 2 lanes on pipe %c: required %i lanes\n",
pipe_name(pipe), pipe_config->fdi_lanes);
return -EINVAL;
}
other_crtc = intel_get_crtc_for_pipe(dev_priv, PIPE_B);
other_crtc_state =
intel_atomic_get_crtc_state(state, other_crtc);
if (IS_ERR(other_crtc_state))
return PTR_ERR(other_crtc_state);
if (pipe_required_fdi_lanes(other_crtc_state) > 2) {
DRM_DEBUG_KMS("fdi link B uses too many lanes to enable link C\n");
return -EINVAL;
}
return 0;
default:
BUG();
}
}
#define RETRY 1
static int ironlake_fdi_compute_config(struct intel_crtc *intel_crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = intel_crtc->base.dev;
const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
int lane, link_bw, fdi_dotclock, ret;
bool needs_recompute = false;
retry:
/* FDI is a binary signal running at ~2.7GHz, encoding
* each output octet as 10 bits. The actual frequency
* is stored as a divider into a 100MHz clock, and the
* mode pixel clock is stored in units of 1KHz.
* Hence the bw of each lane in terms of the mode signal
* is:
*/
link_bw = intel_fdi_link_freq(to_i915(dev), pipe_config);
fdi_dotclock = adjusted_mode->crtc_clock;
lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
pipe_config->pipe_bpp);
pipe_config->fdi_lanes = lane;
intel_link_compute_m_n(pipe_config->pipe_bpp, lane, fdi_dotclock,
link_bw, &pipe_config->fdi_m_n, false, false);
ret = ironlake_check_fdi_lanes(dev, intel_crtc->pipe, pipe_config);
if (ret == -EDEADLK)
return ret;
if (ret == -EINVAL && pipe_config->pipe_bpp > 6*3) {
pipe_config->pipe_bpp -= 2*3;
DRM_DEBUG_KMS("fdi link bw constraint, reducing pipe bpp to %i\n",
pipe_config->pipe_bpp);
needs_recompute = true;
pipe_config->bw_constrained = true;
goto retry;
}
if (needs_recompute)
return RETRY;
return ret;
}
bool hsw_crtc_state_ips_capable(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
/* IPS only exists on ULT machines and is tied to pipe A. */
if (!hsw_crtc_supports_ips(crtc))
return false;
if (!i915_modparams.enable_ips)
return false;
if (crtc_state->pipe_bpp > 24)
return false;
/*
* We compare against max which means we must take
* the increased cdclk requirement into account when
* calculating the new cdclk.
*
* Should measure whether using a lower cdclk w/o IPS
*/
if (IS_BROADWELL(dev_priv) &&
crtc_state->pixel_rate > dev_priv->max_cdclk_freq * 95 / 100)
return false;
return true;
}
static bool hsw_compute_ips_config(struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv =
to_i915(crtc_state->base.crtc->dev);
struct intel_atomic_state *intel_state =
to_intel_atomic_state(crtc_state->base.state);
if (!hsw_crtc_state_ips_capable(crtc_state))
return false;
/*
* When IPS gets enabled, the pipe CRC changes. Since IPS gets
* enabled and disabled dynamically based on package C states,
* user space can't make reliable use of the CRCs, so let's just
* completely disable it.
*/
if (crtc_state->crc_enabled)
return false;
/* IPS should be fine as long as at least one plane is enabled. */
if (!(crtc_state->active_planes & ~BIT(PLANE_CURSOR)))
return false;
/* pixel rate mustn't exceed 95% of cdclk with IPS on BDW */
if (IS_BROADWELL(dev_priv) &&
crtc_state->pixel_rate > intel_state->cdclk.logical.cdclk * 95 / 100)
return false;
return true;
}
static bool intel_crtc_supports_double_wide(const struct intel_crtc *crtc)
{
const struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
/* GDG double wide on either pipe, otherwise pipe A only */
return INTEL_GEN(dev_priv) < 4 &&
(crtc->pipe == PIPE_A || IS_I915G(dev_priv));
}
static u32 ilk_pipe_pixel_rate(const struct intel_crtc_state *pipe_config)
{
u32 pixel_rate;
pixel_rate = pipe_config->base.adjusted_mode.crtc_clock;
/*
* We only use IF-ID interlacing. If we ever use
* PF-ID we'll need to adjust the pixel_rate here.
*/
if (pipe_config->pch_pfit.enabled) {
u64 pipe_w, pipe_h, pfit_w, pfit_h;
u32 pfit_size = pipe_config->pch_pfit.size;
pipe_w = pipe_config->pipe_src_w;
pipe_h = pipe_config->pipe_src_h;
pfit_w = (pfit_size >> 16) & 0xFFFF;
pfit_h = pfit_size & 0xFFFF;
if (pipe_w < pfit_w)
pipe_w = pfit_w;
if (pipe_h < pfit_h)
pipe_h = pfit_h;
if (WARN_ON(!pfit_w || !pfit_h))
return pixel_rate;
pixel_rate = div_u64(mul_u32_u32(pixel_rate, pipe_w * pipe_h),
pfit_w * pfit_h);
}
return pixel_rate;
}
static void intel_crtc_compute_pixel_rate(struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
if (HAS_GMCH(dev_priv))
/* FIXME calculate proper pipe pixel rate for GMCH pfit */
crtc_state->pixel_rate =
crtc_state->base.adjusted_mode.crtc_clock;
else
crtc_state->pixel_rate =
ilk_pipe_pixel_rate(crtc_state);
}
static int intel_crtc_compute_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
const struct drm_display_mode *adjusted_mode = &pipe_config->base.adjusted_mode;
int clock_limit = dev_priv->max_dotclk_freq;
if (INTEL_GEN(dev_priv) < 4) {
clock_limit = dev_priv->max_cdclk_freq * 9 / 10;
/*
* Enable double wide mode when the dot clock
* is > 90% of the (display) core speed.
*/
if (intel_crtc_supports_double_wide(crtc) &&
adjusted_mode->crtc_clock > clock_limit) {
clock_limit = dev_priv->max_dotclk_freq;
pipe_config->double_wide = true;
}
}
if (adjusted_mode->crtc_clock > clock_limit) {
DRM_DEBUG_KMS("requested pixel clock (%d kHz) too high (max: %d kHz, double wide: %s)\n",
adjusted_mode->crtc_clock, clock_limit,
yesno(pipe_config->double_wide));
return -EINVAL;
}
if ((pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) &&
pipe_config->base.ctm) {
/*
* There is only one pipe CSC unit per pipe, and we need that
* for output conversion from RGB->YCBCR. So if CTM is already
* applied we can't support YCBCR420 output.
*/
DRM_DEBUG_KMS("YCBCR420 and CTM together are not possible\n");
return -EINVAL;
}
/*
* Pipe horizontal size must be even in:
* - DVO ganged mode
* - LVDS dual channel mode
* - Double wide pipe
*/
if (pipe_config->pipe_src_w & 1) {
if (pipe_config->double_wide) {
DRM_DEBUG_KMS("Odd pipe source width not supported with double wide pipe\n");
return -EINVAL;
}
if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_LVDS) &&
intel_is_dual_link_lvds(dev_priv)) {
DRM_DEBUG_KMS("Odd pipe source width not supported with dual link LVDS\n");
return -EINVAL;
}
}
/* Cantiga+ cannot handle modes with a hsync front porch of 0.
* WaPruneModeWithIncorrectHsyncOffset:ctg,elk,ilk,snb,ivb,vlv,hsw.
*/
if ((INTEL_GEN(dev_priv) > 4 || IS_G4X(dev_priv)) &&
adjusted_mode->crtc_hsync_start == adjusted_mode->crtc_hdisplay)
return -EINVAL;
intel_crtc_compute_pixel_rate(pipe_config);
if (pipe_config->has_pch_encoder)
return ironlake_fdi_compute_config(crtc, pipe_config);
return 0;
}
static void
intel_reduce_m_n_ratio(u32 *num, u32 *den)
{
while (*num > DATA_LINK_M_N_MASK ||
*den > DATA_LINK_M_N_MASK) {
*num >>= 1;
*den >>= 1;
}
}
static void compute_m_n(unsigned int m, unsigned int n,
u32 *ret_m, u32 *ret_n,
bool constant_n)
{
/*
* Several DP dongles in particular seem to be fussy about
* too large link M/N values. Give N value as 0x8000 that
* should be acceptable by specific devices. 0x8000 is the
* specified fixed N value for asynchronous clock mode,
* which the devices expect also in synchronous clock mode.
*/
if (constant_n)
*ret_n = 0x8000;
else
*ret_n = min_t(unsigned int, roundup_pow_of_two(n), DATA_LINK_N_MAX);
*ret_m = div_u64(mul_u32_u32(m, *ret_n), n);
intel_reduce_m_n_ratio(ret_m, ret_n);
}
void
intel_link_compute_m_n(u16 bits_per_pixel, int nlanes,
int pixel_clock, int link_clock,
struct intel_link_m_n *m_n,
bool constant_n, bool fec_enable)
{
u32 data_clock = bits_per_pixel * pixel_clock;
if (fec_enable)
data_clock = intel_dp_mode_to_fec_clock(data_clock);
m_n->tu = 64;
compute_m_n(data_clock,
link_clock * nlanes * 8,
&m_n->gmch_m, &m_n->gmch_n,
constant_n);
compute_m_n(pixel_clock, link_clock,
&m_n->link_m, &m_n->link_n,
constant_n);
}
static void intel_panel_sanitize_ssc(struct drm_i915_private *dev_priv)
{
/*
* There may be no VBT; and if the BIOS enabled SSC we can
* just keep using it to avoid unnecessary flicker. Whereas if the
* BIOS isn't using it, don't assume it will work even if the VBT
* indicates as much.
*/
if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv)) {
bool bios_lvds_use_ssc = I915_READ(PCH_DREF_CONTROL) &
DREF_SSC1_ENABLE;
if (dev_priv->vbt.lvds_use_ssc != bios_lvds_use_ssc) {
DRM_DEBUG_KMS("SSC %s by BIOS, overriding VBT which says %s\n",
enableddisabled(bios_lvds_use_ssc),
enableddisabled(dev_priv->vbt.lvds_use_ssc));
dev_priv->vbt.lvds_use_ssc = bios_lvds_use_ssc;
}
}
}
static inline bool intel_panel_use_ssc(struct drm_i915_private *dev_priv)
{
if (i915_modparams.panel_use_ssc >= 0)
return i915_modparams.panel_use_ssc != 0;
return dev_priv->vbt.lvds_use_ssc
&& !(dev_priv->quirks & QUIRK_LVDS_SSC_DISABLE);
}
static u32 pnv_dpll_compute_fp(struct dpll *dpll)
{
return (1 << dpll->n) << 16 | dpll->m2;
}
static u32 i9xx_dpll_compute_fp(struct dpll *dpll)
{
return dpll->n << 16 | dpll->m1 << 8 | dpll->m2;
}
static void i9xx_update_pll_dividers(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 fp, fp2 = 0;
if (IS_PINEVIEW(dev_priv)) {
fp = pnv_dpll_compute_fp(&crtc_state->dpll);
if (reduced_clock)
fp2 = pnv_dpll_compute_fp(reduced_clock);
} else {
fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
if (reduced_clock)
fp2 = i9xx_dpll_compute_fp(reduced_clock);
}
crtc_state->dpll_hw_state.fp0 = fp;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
reduced_clock) {
crtc_state->dpll_hw_state.fp1 = fp2;
} else {
crtc_state->dpll_hw_state.fp1 = fp;
}
}
static void vlv_pllb_recal_opamp(struct drm_i915_private *dev_priv, enum pipe
pipe)
{
u32 reg_val;
/*
* PLLB opamp always calibrates to max value of 0x3f, force enable it
* and set it to a reasonable value instead.
*/
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
reg_val &= 0xffffff00;
reg_val |= 0x00000030;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
reg_val &= 0x00ffffff;
reg_val |= 0x8c000000;
vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW9(1));
reg_val &= 0xffffff00;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9(1), reg_val);
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_REF_DW13);
reg_val &= 0x00ffffff;
reg_val |= 0xb0000000;
vlv_dpio_write(dev_priv, pipe, VLV_REF_DW13, reg_val);
}
static void intel_pch_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
const struct intel_link_m_n *m_n)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
I915_WRITE(PCH_TRANS_DATA_M1(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
I915_WRITE(PCH_TRANS_DATA_N1(pipe), m_n->gmch_n);
I915_WRITE(PCH_TRANS_LINK_M1(pipe), m_n->link_m);
I915_WRITE(PCH_TRANS_LINK_N1(pipe), m_n->link_n);
}
static bool transcoder_has_m2_n2(struct drm_i915_private *dev_priv,
enum transcoder transcoder)
{
if (IS_HASWELL(dev_priv))
return transcoder == TRANSCODER_EDP;
/*
* Strictly speaking some registers are available before
* gen7, but we only support DRRS on gen7+
*/
return IS_GEN(dev_priv, 7) || IS_CHERRYVIEW(dev_priv);
}
static void intel_cpu_transcoder_set_m_n(const struct intel_crtc_state *crtc_state,
const struct intel_link_m_n *m_n,
const struct intel_link_m_n *m2_n2)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
enum transcoder transcoder = crtc_state->cpu_transcoder;
if (INTEL_GEN(dev_priv) >= 5) {
I915_WRITE(PIPE_DATA_M1(transcoder), TU_SIZE(m_n->tu) | m_n->gmch_m);
I915_WRITE(PIPE_DATA_N1(transcoder), m_n->gmch_n);
I915_WRITE(PIPE_LINK_M1(transcoder), m_n->link_m);
I915_WRITE(PIPE_LINK_N1(transcoder), m_n->link_n);
/*
* M2_N2 registers are set only if DRRS is supported
* (to make sure the registers are not unnecessarily accessed).
*/
if (m2_n2 && crtc_state->has_drrs &&
transcoder_has_m2_n2(dev_priv, transcoder)) {
I915_WRITE(PIPE_DATA_M2(transcoder),
TU_SIZE(m2_n2->tu) | m2_n2->gmch_m);
I915_WRITE(PIPE_DATA_N2(transcoder), m2_n2->gmch_n);
I915_WRITE(PIPE_LINK_M2(transcoder), m2_n2->link_m);
I915_WRITE(PIPE_LINK_N2(transcoder), m2_n2->link_n);
}
} else {
I915_WRITE(PIPE_DATA_M_G4X(pipe), TU_SIZE(m_n->tu) | m_n->gmch_m);
I915_WRITE(PIPE_DATA_N_G4X(pipe), m_n->gmch_n);
I915_WRITE(PIPE_LINK_M_G4X(pipe), m_n->link_m);
I915_WRITE(PIPE_LINK_N_G4X(pipe), m_n->link_n);
}
}
void intel_dp_set_m_n(const struct intel_crtc_state *crtc_state, enum link_m_n_set m_n)
{
const struct intel_link_m_n *dp_m_n, *dp_m2_n2 = NULL;
if (m_n == M1_N1) {
dp_m_n = &crtc_state->dp_m_n;
dp_m2_n2 = &crtc_state->dp_m2_n2;
} else if (m_n == M2_N2) {
/*
* M2_N2 registers are not supported. Hence m2_n2 divider value
* needs to be programmed into M1_N1.
*/
dp_m_n = &crtc_state->dp_m2_n2;
} else {
DRM_ERROR("Unsupported divider value\n");
return;
}
if (crtc_state->has_pch_encoder)
intel_pch_transcoder_set_m_n(crtc_state, &crtc_state->dp_m_n);
else
intel_cpu_transcoder_set_m_n(crtc_state, dp_m_n, dp_m2_n2);
}
static void vlv_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
pipe_config->dpll_hw_state.dpll = DPLL_INTEGRATED_REF_CLK_VLV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (crtc->pipe != PIPE_A)
pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
/* DPLL not used with DSI, but still need the rest set up */
if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE |
DPLL_EXT_BUFFER_ENABLE_VLV;
pipe_config->dpll_hw_state.dpll_md =
(pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
static void chv_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
pipe_config->dpll_hw_state.dpll = DPLL_SSC_REF_CLK_CHV |
DPLL_REF_CLK_ENABLE_VLV | DPLL_VGA_MODE_DIS;
if (crtc->pipe != PIPE_A)
pipe_config->dpll_hw_state.dpll |= DPLL_INTEGRATED_CRI_CLK_VLV;
/* DPLL not used with DSI, but still need the rest set up */
if (!intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DSI))
pipe_config->dpll_hw_state.dpll |= DPLL_VCO_ENABLE;
pipe_config->dpll_hw_state.dpll_md =
(pipe_config->pixel_multiplier - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
static void vlv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
u32 mdiv;
u32 bestn, bestm1, bestm2, bestp1, bestp2;
u32 coreclk, reg_val;
/* Enable Refclk */
I915_WRITE(DPLL(pipe),
pipe_config->dpll_hw_state.dpll &
~(DPLL_VCO_ENABLE | DPLL_EXT_BUFFER_ENABLE_VLV));
/* No need to actually set up the DPLL with DSI */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
vlv_dpio_get(dev_priv);
bestn = pipe_config->dpll.n;
bestm1 = pipe_config->dpll.m1;
bestm2 = pipe_config->dpll.m2;
bestp1 = pipe_config->dpll.p1;
bestp2 = pipe_config->dpll.p2;
/* See eDP HDMI DPIO driver vbios notes doc */
/* PLL B needs special handling */
if (pipe == PIPE_B)
vlv_pllb_recal_opamp(dev_priv, pipe);
/* Set up Tx target for periodic Rcomp update */
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW9_BCAST, 0x0100000f);
/* Disable target IRef on PLL */
reg_val = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW8(pipe));
reg_val &= 0x00ffffff;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW8(pipe), reg_val);
/* Disable fast lock */
vlv_dpio_write(dev_priv, pipe, VLV_CMN_DW0, 0x610);
/* Set idtafcrecal before PLL is enabled */
mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
mdiv |= ((bestn << DPIO_N_SHIFT));
mdiv |= (1 << DPIO_K_SHIFT);
/*
* Post divider depends on pixel clock rate, DAC vs digital (and LVDS,
* but we don't support that).
* Note: don't use the DAC post divider as it seems unstable.
*/
mdiv |= (DPIO_POST_DIV_HDMIDP << DPIO_POST_DIV_SHIFT);
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
mdiv |= DPIO_ENABLE_CALIBRATION;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW3(pipe), mdiv);
/* Set HBR and RBR LPF coefficients */
if (pipe_config->port_clock == 162000 ||
intel_crtc_has_type(pipe_config, INTEL_OUTPUT_ANALOG) ||
intel_crtc_has_type(pipe_config, INTEL_OUTPUT_HDMI))
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
0x009f0003);
else
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW10(pipe),
0x00d0000f);
if (intel_crtc_has_dp_encoder(pipe_config)) {
/* Use SSC source */
if (pipe == PIPE_A)
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df40000);
else
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df70000);
} else { /* HDMI or VGA */
/* Use bend source */
if (pipe == PIPE_A)
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df70000);
else
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW5(pipe),
0x0df40000);
}
coreclk = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW7(pipe));
coreclk = (coreclk & 0x0000ff00) | 0x01c00000;
if (intel_crtc_has_dp_encoder(pipe_config))
coreclk |= 0x01000000;
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW7(pipe), coreclk);
vlv_dpio_write(dev_priv, pipe, VLV_PLL_DW11(pipe), 0x87871000);
vlv_dpio_put(dev_priv);
}
static void chv_prepare_pll(struct intel_crtc *crtc,
const struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
enum dpio_channel port = vlv_pipe_to_channel(pipe);
u32 loopfilter, tribuf_calcntr;
u32 bestn, bestm1, bestm2, bestp1, bestp2, bestm2_frac;
u32 dpio_val;
int vco;
/* Enable Refclk and SSC */
I915_WRITE(DPLL(pipe),
pipe_config->dpll_hw_state.dpll & ~DPLL_VCO_ENABLE);
/* No need to actually set up the DPLL with DSI */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
bestn = pipe_config->dpll.n;
bestm2_frac = pipe_config->dpll.m2 & 0x3fffff;
bestm1 = pipe_config->dpll.m1;
bestm2 = pipe_config->dpll.m2 >> 22;
bestp1 = pipe_config->dpll.p1;
bestp2 = pipe_config->dpll.p2;
vco = pipe_config->dpll.vco;
dpio_val = 0;
loopfilter = 0;
vlv_dpio_get(dev_priv);
/* p1 and p2 divider */
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW13(port),
5 << DPIO_CHV_S1_DIV_SHIFT |
bestp1 << DPIO_CHV_P1_DIV_SHIFT |
bestp2 << DPIO_CHV_P2_DIV_SHIFT |
1 << DPIO_CHV_K_DIV_SHIFT);
/* Feedback post-divider - m2 */
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW0(port), bestm2);
/* Feedback refclk divider - n and m1 */
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW1(port),
DPIO_CHV_M1_DIV_BY_2 |
1 << DPIO_CHV_N_DIV_SHIFT);
/* M2 fraction division */
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
/* M2 fraction division enable */
dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
dpio_val &= ~(DPIO_CHV_FEEDFWD_GAIN_MASK | DPIO_CHV_FRAC_DIV_EN);
dpio_val |= (2 << DPIO_CHV_FEEDFWD_GAIN_SHIFT);
if (bestm2_frac)
dpio_val |= DPIO_CHV_FRAC_DIV_EN;
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW3(port), dpio_val);
/* Program digital lock detect threshold */
dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW9(port));
dpio_val &= ~(DPIO_CHV_INT_LOCK_THRESHOLD_MASK |
DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE);
dpio_val |= (0x5 << DPIO_CHV_INT_LOCK_THRESHOLD_SHIFT);
if (!bestm2_frac)
dpio_val |= DPIO_CHV_INT_LOCK_THRESHOLD_SEL_COARSE;
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW9(port), dpio_val);
/* Loop filter */
if (vco == 5400000) {
loopfilter |= (0x3 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0x8 << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x1 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0x9;
} else if (vco <= 6200000) {
loopfilter |= (0x5 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0xB << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0x9;
} else if (vco <= 6480000) {
loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0x8;
} else {
/* Not supported. Apply the same limits as in the max case */
loopfilter |= (0x4 << DPIO_CHV_PROP_COEFF_SHIFT);
loopfilter |= (0x9 << DPIO_CHV_INT_COEFF_SHIFT);
loopfilter |= (0x3 << DPIO_CHV_GAIN_CTRL_SHIFT);
tribuf_calcntr = 0;
}
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW6(port), loopfilter);
dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW8(port));
dpio_val &= ~DPIO_CHV_TDC_TARGET_CNT_MASK;
dpio_val |= (tribuf_calcntr << DPIO_CHV_TDC_TARGET_CNT_SHIFT);
vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW8(port), dpio_val);
/* AFC Recal */
vlv_dpio_write(dev_priv, pipe, CHV_CMN_DW14(port),
vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW14(port)) |
DPIO_AFC_RECAL);
vlv_dpio_put(dev_priv);
}
/**
* vlv_force_pll_on - forcibly enable just the PLL
* @dev_priv: i915 private structure
* @pipe: pipe PLL to enable
* @dpll: PLL configuration
*
* Enable the PLL for @pipe using the supplied @dpll config. To be used
* in cases where we need the PLL enabled even when @pipe is not going to
* be enabled.
*/
int vlv_force_pll_on(struct drm_i915_private *dev_priv, enum pipe pipe,
const struct dpll *dpll)
{
struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
struct intel_crtc_state *pipe_config;
pipe_config = kzalloc(sizeof(*pipe_config), GFP_KERNEL);
if (!pipe_config)
return -ENOMEM;
pipe_config->base.crtc = &crtc->base;
pipe_config->pixel_multiplier = 1;
pipe_config->dpll = *dpll;
if (IS_CHERRYVIEW(dev_priv)) {
chv_compute_dpll(crtc, pipe_config);
chv_prepare_pll(crtc, pipe_config);
chv_enable_pll(crtc, pipe_config);
} else {
vlv_compute_dpll(crtc, pipe_config);
vlv_prepare_pll(crtc, pipe_config);
vlv_enable_pll(crtc, pipe_config);
}
kfree(pipe_config);
return 0;
}
/**
* vlv_force_pll_off - forcibly disable just the PLL
* @dev_priv: i915 private structure
* @pipe: pipe PLL to disable
*
* Disable the PLL for @pipe. To be used in cases where we need
* the PLL enabled even when @pipe is not going to be enabled.
*/
void vlv_force_pll_off(struct drm_i915_private *dev_priv, enum pipe pipe)
{
if (IS_CHERRYVIEW(dev_priv))
chv_disable_pll(dev_priv, pipe);
else
vlv_disable_pll(dev_priv, pipe);
}
static void i9xx_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 dpll;
struct dpll *clock = &crtc_state->dpll;
i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
dpll = DPLL_VGA_MODE_DIS;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
dpll |= (crtc_state->pixel_multiplier - 1)
<< SDVO_MULTIPLIER_SHIFT_HIRES;
}
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
dpll |= DPLL_SDVO_HIGH_SPEED;
if (intel_crtc_has_dp_encoder(crtc_state))
dpll |= DPLL_SDVO_HIGH_SPEED;
/* compute bitmask from p1 value */
if (IS_PINEVIEW(dev_priv))
dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW;
else {
dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
if (IS_G4X(dev_priv) && reduced_clock)
dpll |= (1 << (reduced_clock->p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
}
switch (clock->p2) {
case 5:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
break;
case 7:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
break;
case 10:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
break;
case 14:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
break;
}
if (INTEL_GEN(dev_priv) >= 4)
dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
if (crtc_state->sdvo_tv_clock)
dpll |= PLL_REF_INPUT_TVCLKINBC;
else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
intel_panel_use_ssc(dev_priv))
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
dpll |= DPLL_VCO_ENABLE;
crtc_state->dpll_hw_state.dpll = dpll;
if (INTEL_GEN(dev_priv) >= 4) {
u32 dpll_md = (crtc_state->pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
crtc_state->dpll_hw_state.dpll_md = dpll_md;
}
}
static void i8xx_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 dpll;
struct dpll *clock = &crtc_state->dpll;
i9xx_update_pll_dividers(crtc, crtc_state, reduced_clock);
dpll = DPLL_VGA_MODE_DIS;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
dpll |= (1 << (clock->p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
} else {
if (clock->p1 == 2)
dpll |= PLL_P1_DIVIDE_BY_TWO;
else
dpll |= (clock->p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT;
if (clock->p2 == 4)
dpll |= PLL_P2_DIVIDE_BY_4;
}
/*
* Bspec:
* "[Almador Errata}: For the correct operation of the muxed DVO pins
* (GDEVSELB/I2Cdata, GIRDBY/I2CClk) and (GFRAMEB/DVI_Data,
* GTRDYB/DVI_Clk): Bit 31 (DPLL VCO Enable) and Bit 30 (2X Clock
* Enable) must be set to “1” in both the DPLL A Control Register
* (06014h-06017h) and DPLL B Control Register (06018h-0601Bh)."
*
* For simplicity We simply keep both bits always enabled in
* both DPLLS. The spec says we should disable the DVO 2X clock
* when not needed, but this seems to work fine in practice.
*/
if (IS_I830(dev_priv) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO))
dpll |= DPLL_DVO_2X_MODE;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
intel_panel_use_ssc(dev_priv))
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
dpll |= DPLL_VCO_ENABLE;
crtc_state->dpll_hw_state.dpll = dpll;
}
static void intel_set_pipe_timings(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
const struct drm_display_mode *adjusted_mode = &crtc_state->base.adjusted_mode;
u32 crtc_vtotal, crtc_vblank_end;
int vsyncshift = 0;
/* We need to be careful not to changed the adjusted mode, for otherwise
* the hw state checker will get angry at the mismatch. */
crtc_vtotal = adjusted_mode->crtc_vtotal;
crtc_vblank_end = adjusted_mode->crtc_vblank_end;
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE) {
/* the chip adds 2 halflines automatically */
crtc_vtotal -= 1;
crtc_vblank_end -= 1;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
vsyncshift = (adjusted_mode->crtc_htotal - 1) / 2;
else
vsyncshift = adjusted_mode->crtc_hsync_start -
adjusted_mode->crtc_htotal / 2;
if (vsyncshift < 0)
vsyncshift += adjusted_mode->crtc_htotal;
}
if (INTEL_GEN(dev_priv) > 3)
I915_WRITE(VSYNCSHIFT(cpu_transcoder), vsyncshift);
I915_WRITE(HTOTAL(cpu_transcoder),
(adjusted_mode->crtc_hdisplay - 1) |
((adjusted_mode->crtc_htotal - 1) << 16));
I915_WRITE(HBLANK(cpu_transcoder),
(adjusted_mode->crtc_hblank_start - 1) |
((adjusted_mode->crtc_hblank_end - 1) << 16));
I915_WRITE(HSYNC(cpu_transcoder),
(adjusted_mode->crtc_hsync_start - 1) |
((adjusted_mode->crtc_hsync_end - 1) << 16));
I915_WRITE(VTOTAL(cpu_transcoder),
(adjusted_mode->crtc_vdisplay - 1) |
((crtc_vtotal - 1) << 16));
I915_WRITE(VBLANK(cpu_transcoder),
(adjusted_mode->crtc_vblank_start - 1) |
((crtc_vblank_end - 1) << 16));
I915_WRITE(VSYNC(cpu_transcoder),
(adjusted_mode->crtc_vsync_start - 1) |
((adjusted_mode->crtc_vsync_end - 1) << 16));
/* Workaround: when the EDP input selection is B, the VTOTAL_B must be
* programmed with the VTOTAL_EDP value. Same for VTOTAL_C. This is
* documented on the DDI_FUNC_CTL register description, EDP Input Select
* bits. */
if (IS_HASWELL(dev_priv) && cpu_transcoder == TRANSCODER_EDP &&
(pipe == PIPE_B || pipe == PIPE_C))
I915_WRITE(VTOTAL(pipe), I915_READ(VTOTAL(cpu_transcoder)));
}
static void intel_set_pipe_src_size(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
/* pipesrc controls the size that is scaled from, which should
* always be the user's requested size.
*/
I915_WRITE(PIPESRC(pipe),
((crtc_state->pipe_src_w - 1) << 16) |
(crtc_state->pipe_src_h - 1));
}
static bool intel_pipe_is_interlaced(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
if (IS_GEN(dev_priv, 2))
return false;
if (INTEL_GEN(dev_priv) >= 9 ||
IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
return I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK_HSW;
else
return I915_READ(PIPECONF(cpu_transcoder)) & PIPECONF_INTERLACE_MASK;
}
static void intel_get_pipe_timings(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
u32 tmp;
tmp = I915_READ(HTOTAL(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_hdisplay = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_htotal = ((tmp >> 16) & 0xffff) + 1;
if (!transcoder_is_dsi(cpu_transcoder)) {
tmp = I915_READ(HBLANK(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_hblank_start =
(tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_hblank_end =
((tmp >> 16) & 0xffff) + 1;
}
tmp = I915_READ(HSYNC(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_hsync_start = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_hsync_end = ((tmp >> 16) & 0xffff) + 1;
tmp = I915_READ(VTOTAL(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_vdisplay = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_vtotal = ((tmp >> 16) & 0xffff) + 1;
if (!transcoder_is_dsi(cpu_transcoder)) {
tmp = I915_READ(VBLANK(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_vblank_start =
(tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_vblank_end =
((tmp >> 16) & 0xffff) + 1;
}
tmp = I915_READ(VSYNC(cpu_transcoder));
pipe_config->base.adjusted_mode.crtc_vsync_start = (tmp & 0xffff) + 1;
pipe_config->base.adjusted_mode.crtc_vsync_end = ((tmp >> 16) & 0xffff) + 1;
if (intel_pipe_is_interlaced(pipe_config)) {
pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_INTERLACE;
pipe_config->base.adjusted_mode.crtc_vtotal += 1;
pipe_config->base.adjusted_mode.crtc_vblank_end += 1;
}
}
static void intel_get_pipe_src_size(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 tmp;
tmp = I915_READ(PIPESRC(crtc->pipe));
pipe_config->pipe_src_h = (tmp & 0xffff) + 1;
pipe_config->pipe_src_w = ((tmp >> 16) & 0xffff) + 1;
pipe_config->base.mode.vdisplay = pipe_config->pipe_src_h;
pipe_config->base.mode.hdisplay = pipe_config->pipe_src_w;
}
void intel_mode_from_pipe_config(struct drm_display_mode *mode,
struct intel_crtc_state *pipe_config)
{
mode->hdisplay = pipe_config->base.adjusted_mode.crtc_hdisplay;
mode->htotal = pipe_config->base.adjusted_mode.crtc_htotal;
mode->hsync_start = pipe_config->base.adjusted_mode.crtc_hsync_start;
mode->hsync_end = pipe_config->base.adjusted_mode.crtc_hsync_end;
mode->vdisplay = pipe_config->base.adjusted_mode.crtc_vdisplay;
mode->vtotal = pipe_config->base.adjusted_mode.crtc_vtotal;
mode->vsync_start = pipe_config->base.adjusted_mode.crtc_vsync_start;
mode->vsync_end = pipe_config->base.adjusted_mode.crtc_vsync_end;
mode->flags = pipe_config->base.adjusted_mode.flags;
mode->type = DRM_MODE_TYPE_DRIVER;
mode->clock = pipe_config->base.adjusted_mode.crtc_clock;
mode->hsync = drm_mode_hsync(mode);
mode->vrefresh = drm_mode_vrefresh(mode);
drm_mode_set_name(mode);
}
static void i9xx_set_pipeconf(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 pipeconf;
pipeconf = 0;
/* we keep both pipes enabled on 830 */
if (IS_I830(dev_priv))
pipeconf |= I915_READ(PIPECONF(crtc->pipe)) & PIPECONF_ENABLE;
if (crtc_state->double_wide)
pipeconf |= PIPECONF_DOUBLE_WIDE;
/* only g4x and later have fancy bpc/dither controls */
if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
IS_CHERRYVIEW(dev_priv)) {
/* Bspec claims that we can't use dithering for 30bpp pipes. */
if (crtc_state->dither && crtc_state->pipe_bpp != 30)
pipeconf |= PIPECONF_DITHER_EN |
PIPECONF_DITHER_TYPE_SP;
switch (crtc_state->pipe_bpp) {
case 18:
pipeconf |= PIPECONF_6BPC;
break;
case 24:
pipeconf |= PIPECONF_8BPC;
break;
case 30:
pipeconf |= PIPECONF_10BPC;
break;
default:
/* Case prevented by intel_choose_pipe_bpp_dither. */
BUG();
}
}
if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
if (INTEL_GEN(dev_priv) < 4 ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO))
pipeconf |= PIPECONF_INTERLACE_W_FIELD_INDICATION;
else
pipeconf |= PIPECONF_INTERLACE_W_SYNC_SHIFT;
} else {
pipeconf |= PIPECONF_PROGRESSIVE;
}
if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
crtc_state->limited_color_range)
pipeconf |= PIPECONF_COLOR_RANGE_SELECT;
pipeconf |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
I915_WRITE(PIPECONF(crtc->pipe), pipeconf);
POSTING_READ(PIPECONF(crtc->pipe));
}
static int i8xx_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct intel_limit *limit;
int refclk = 48000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
limit = &intel_limits_i8xx_lvds;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DVO)) {
limit = &intel_limits_i8xx_dvo;
} else {
limit = &intel_limits_i8xx_dac;
}
if (!crtc_state->clock_set &&
!i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i8xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int g4x_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
const struct intel_limit *limit;
int refclk = 96000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
if (intel_is_dual_link_lvds(dev_priv))
limit = &intel_limits_g4x_dual_channel_lvds;
else
limit = &intel_limits_g4x_single_channel_lvds;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG)) {
limit = &intel_limits_g4x_hdmi;
} else if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO)) {
limit = &intel_limits_g4x_sdvo;
} else {
/* The option is for other outputs */
limit = &intel_limits_i9xx_sdvo;
}
if (!crtc_state->clock_set &&
!g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int pnv_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct intel_limit *limit;
int refclk = 96000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
limit = &intel_limits_pineview_lvds;
} else {
limit = &intel_limits_pineview_sdvo;
}
if (!crtc_state->clock_set &&
!pnv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int i9xx_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
const struct intel_limit *limit;
int refclk = 96000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
refclk = dev_priv->vbt.lvds_ssc_freq;
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n", refclk);
}
limit = &intel_limits_i9xx_lvds;
} else {
limit = &intel_limits_i9xx_sdvo;
}
if (!crtc_state->clock_set &&
!i9xx_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
i9xx_compute_dpll(crtc, crtc_state, NULL);
return 0;
}
static int chv_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
int refclk = 100000;
const struct intel_limit *limit = &intel_limits_chv;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (!crtc_state->clock_set &&
!chv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
chv_compute_dpll(crtc, crtc_state);
return 0;
}
static int vlv_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
int refclk = 100000;
const struct intel_limit *limit = &intel_limits_vlv;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
if (!crtc_state->clock_set &&
!vlv_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
vlv_compute_dpll(crtc, crtc_state);
return 0;
}
static bool i9xx_has_pfit(struct drm_i915_private *dev_priv)
{
if (IS_I830(dev_priv))
return false;
return INTEL_GEN(dev_priv) >= 4 ||
IS_PINEVIEW(dev_priv) || IS_MOBILE(dev_priv);
}
static void i9xx_get_pfit_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 tmp;
if (!i9xx_has_pfit(dev_priv))
return;
tmp = I915_READ(PFIT_CONTROL);
if (!(tmp & PFIT_ENABLE))
return;
/* Check whether the pfit is attached to our pipe. */
if (INTEL_GEN(dev_priv) < 4) {
if (crtc->pipe != PIPE_B)
return;
} else {
if ((tmp & PFIT_PIPE_MASK) != (crtc->pipe << PFIT_PIPE_SHIFT))
return;
}
pipe_config->gmch_pfit.control = tmp;
pipe_config->gmch_pfit.pgm_ratios = I915_READ(PFIT_PGM_RATIOS);
}
static void vlv_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
struct dpll clock;
u32 mdiv;
int refclk = 100000;
/* In case of DSI, DPLL will not be used */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
vlv_dpio_get(dev_priv);
mdiv = vlv_dpio_read(dev_priv, pipe, VLV_PLL_DW3(pipe));
vlv_dpio_put(dev_priv);
clock.m1 = (mdiv >> DPIO_M1DIV_SHIFT) & 7;
clock.m2 = mdiv & DPIO_M2DIV_MASK;
clock.n = (mdiv >> DPIO_N_SHIFT) & 0xf;
clock.p1 = (mdiv >> DPIO_P1_SHIFT) & 7;
clock.p2 = (mdiv >> DPIO_P2_SHIFT) & 0x1f;
pipe_config->port_clock = vlv_calc_dpll_params(refclk, &clock);
}
static void
i9xx_get_initial_plane_config(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_plane *plane = to_intel_plane(crtc->base.primary);
enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
enum pipe pipe;
u32 val, base, offset;
int fourcc, pixel_format;
unsigned int aligned_height;
struct drm_framebuffer *fb;
struct intel_framebuffer *intel_fb;
if (!plane->get_hw_state(plane, &pipe))
return;
WARN_ON(pipe != crtc->pipe);
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb) {
DRM_DEBUG_KMS("failed to alloc fb\n");
return;
}
fb = &intel_fb->base;
fb->dev = dev;
val = I915_READ(DSPCNTR(i9xx_plane));
if (INTEL_GEN(dev_priv) >= 4) {
if (val & DISPPLANE_TILED) {
plane_config->tiling = I915_TILING_X;
fb->modifier = I915_FORMAT_MOD_X_TILED;
}
if (val & DISPPLANE_ROTATE_180)
plane_config->rotation = DRM_MODE_ROTATE_180;
}
if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B &&
val & DISPPLANE_MIRROR)
plane_config->rotation |= DRM_MODE_REFLECT_X;
pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
fourcc = i9xx_format_to_fourcc(pixel_format);
fb->format = drm_format_info(fourcc);
if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
offset = I915_READ(DSPOFFSET(i9xx_plane));
base = I915_READ(DSPSURF(i9xx_plane)) & 0xfffff000;
} else if (INTEL_GEN(dev_priv) >= 4) {
if (plane_config->tiling)
offset = I915_READ(DSPTILEOFF(i9xx_plane));
else
offset = I915_READ(DSPLINOFF(i9xx_plane));
base = I915_READ(DSPSURF(i9xx_plane)) & 0xfffff000;
} else {
base = I915_READ(DSPADDR(i9xx_plane));
}
plane_config->base = base;
val = I915_READ(PIPESRC(pipe));
fb->width = ((val >> 16) & 0xfff) + 1;
fb->height = ((val >> 0) & 0xfff) + 1;
val = I915_READ(DSPSTRIDE(i9xx_plane));
fb->pitches[0] = val & 0xffffffc0;
aligned_height = intel_fb_align_height(fb, 0, fb->height);
plane_config->size = fb->pitches[0] * aligned_height;
DRM_DEBUG_KMS("%s/%s with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
crtc->base.name, plane->base.name, fb->width, fb->height,
fb->format->cpp[0] * 8, base, fb->pitches[0],
plane_config->size);
plane_config->fb = intel_fb;
}
static void chv_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
enum dpio_channel port = vlv_pipe_to_channel(pipe);
struct dpll clock;
u32 cmn_dw13, pll_dw0, pll_dw1, pll_dw2, pll_dw3;
int refclk = 100000;
/* In case of DSI, DPLL will not be used */
if ((pipe_config->dpll_hw_state.dpll & DPLL_VCO_ENABLE) == 0)
return;
vlv_dpio_get(dev_priv);
cmn_dw13 = vlv_dpio_read(dev_priv, pipe, CHV_CMN_DW13(port));
pll_dw0 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW0(port));
pll_dw1 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW1(port));
pll_dw2 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW2(port));
pll_dw3 = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));
vlv_dpio_put(dev_priv);
clock.m1 = (pll_dw1 & 0x7) == DPIO_CHV_M1_DIV_BY_2 ? 2 : 0;
clock.m2 = (pll_dw0 & 0xff) << 22;
if (pll_dw3 & DPIO_CHV_FRAC_DIV_EN)
clock.m2 |= pll_dw2 & 0x3fffff;
clock.n = (pll_dw1 >> DPIO_CHV_N_DIV_SHIFT) & 0xf;
clock.p1 = (cmn_dw13 >> DPIO_CHV_P1_DIV_SHIFT) & 0x7;
clock.p2 = (cmn_dw13 >> DPIO_CHV_P2_DIV_SHIFT) & 0x1f;
pipe_config->port_clock = chv_calc_dpll_params(refclk, &clock);
}
static enum intel_output_format
bdw_get_pipemisc_output_format(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 tmp;
tmp = I915_READ(PIPEMISC(crtc->pipe));
if (tmp & PIPEMISC_YUV420_ENABLE) {
/* We support 4:2:0 in full blend mode only */
WARN_ON((tmp & PIPEMISC_YUV420_MODE_FULL_BLEND) == 0);
return INTEL_OUTPUT_FORMAT_YCBCR420;
} else if (tmp & PIPEMISC_OUTPUT_COLORSPACE_YUV) {
return INTEL_OUTPUT_FORMAT_YCBCR444;
} else {
return INTEL_OUTPUT_FORMAT_RGB;
}
}
static void i9xx_get_pipe_color_config(struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct intel_plane *plane = to_intel_plane(crtc->base.primary);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum i9xx_plane_id i9xx_plane = plane->i9xx_plane;
u32 tmp;
tmp = I915_READ(DSPCNTR(i9xx_plane));
if (tmp & DISPPLANE_GAMMA_ENABLE)
crtc_state->gamma_enable = true;
if (!HAS_GMCH(dev_priv) &&
tmp & DISPPLANE_PIPE_CSC_ENABLE)
crtc_state->csc_enable = true;
}
static bool i9xx_get_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum intel_display_power_domain power_domain;
intel_wakeref_t wakeref;
u32 tmp;
bool ret;
power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wakeref)
return false;
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
pipe_config->shared_dpll = NULL;
pipe_config->master_transcoder = INVALID_TRANSCODER;
ret = false;
tmp = I915_READ(PIPECONF(crtc->pipe));
if (!(tmp & PIPECONF_ENABLE))
goto out;
if (IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
IS_CHERRYVIEW(dev_priv)) {
switch (tmp & PIPECONF_BPC_MASK) {
case PIPECONF_6BPC:
pipe_config->pipe_bpp = 18;
break;
case PIPECONF_8BPC:
pipe_config->pipe_bpp = 24;
break;
case PIPECONF_10BPC:
pipe_config->pipe_bpp = 30;
break;
default:
break;
}
}
if ((IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) &&
(tmp & PIPECONF_COLOR_RANGE_SELECT))
pipe_config->limited_color_range = true;
pipe_config->gamma_mode = (tmp & PIPECONF_GAMMA_MODE_MASK_I9XX) >>
PIPECONF_GAMMA_MODE_SHIFT;
if (IS_CHERRYVIEW(dev_priv))
pipe_config->cgm_mode = I915_READ(CGM_PIPE_MODE(crtc->pipe));
i9xx_get_pipe_color_config(pipe_config);
intel_color_get_config(pipe_config);
if (INTEL_GEN(dev_priv) < 4)
pipe_config->double_wide = tmp & PIPECONF_DOUBLE_WIDE;
intel_get_pipe_timings(crtc, pipe_config);
intel_get_pipe_src_size(crtc, pipe_config);
i9xx_get_pfit_config(crtc, pipe_config);
if (INTEL_GEN(dev_priv) >= 4) {
/* No way to read it out on pipes B and C */
if (IS_CHERRYVIEW(dev_priv) && crtc->pipe != PIPE_A)
tmp = dev_priv->chv_dpll_md[crtc->pipe];
else
tmp = I915_READ(DPLL_MD(crtc->pipe));
pipe_config->pixel_multiplier =
((tmp & DPLL_MD_UDI_MULTIPLIER_MASK)
>> DPLL_MD_UDI_MULTIPLIER_SHIFT) + 1;
pipe_config->dpll_hw_state.dpll_md = tmp;
} else if (IS_I945G(dev_priv) || IS_I945GM(dev_priv) ||
IS_G33(dev_priv) || IS_PINEVIEW(dev_priv)) {
tmp = I915_READ(DPLL(crtc->pipe));
pipe_config->pixel_multiplier =
((tmp & SDVO_MULTIPLIER_MASK)
>> SDVO_MULTIPLIER_SHIFT_HIRES) + 1;
} else {
/* Note that on i915G/GM the pixel multiplier is in the sdvo
* port and will be fixed up in the encoder->get_config
* function. */
pipe_config->pixel_multiplier = 1;
}
pipe_config->dpll_hw_state.dpll = I915_READ(DPLL(crtc->pipe));
if (!IS_VALLEYVIEW(dev_priv) && !IS_CHERRYVIEW(dev_priv)) {
pipe_config->dpll_hw_state.fp0 = I915_READ(FP0(crtc->pipe));
pipe_config->dpll_hw_state.fp1 = I915_READ(FP1(crtc->pipe));
} else {
/* Mask out read-only status bits. */
pipe_config->dpll_hw_state.dpll &= ~(DPLL_LOCK_VLV |
DPLL_PORTC_READY_MASK |
DPLL_PORTB_READY_MASK);
}
if (IS_CHERRYVIEW(dev_priv))
chv_crtc_clock_get(crtc, pipe_config);
else if (IS_VALLEYVIEW(dev_priv))
vlv_crtc_clock_get(crtc, pipe_config);
else
i9xx_crtc_clock_get(crtc, pipe_config);
/*
* Normally the dotclock is filled in by the encoder .get_config()
* but in case the pipe is enabled w/o any ports we need a sane
* default.
*/
pipe_config->base.adjusted_mode.crtc_clock =
pipe_config->port_clock / pipe_config->pixel_multiplier;
ret = true;
out:
intel_display_power_put(dev_priv, power_domain, wakeref);
return ret;
}
static void ironlake_init_pch_refclk(struct drm_i915_private *dev_priv)
{
struct intel_encoder *encoder;
int i;
u32 val, final;
bool has_lvds = false;
bool has_cpu_edp = false;
bool has_panel = false;
bool has_ck505 = false;
bool can_ssc = false;
bool using_ssc_source = false;
/* We need to take the global config into account */
for_each_intel_encoder(&dev_priv->drm, encoder) {
switch (encoder->type) {
case INTEL_OUTPUT_LVDS:
has_panel = true;
has_lvds = true;
break;
case INTEL_OUTPUT_EDP:
has_panel = true;
if (encoder->port == PORT_A)
has_cpu_edp = true;
break;
default:
break;
}
}
if (HAS_PCH_IBX(dev_priv)) {
has_ck505 = dev_priv->vbt.display_clock_mode;
can_ssc = has_ck505;
} else {
has_ck505 = false;
can_ssc = true;
}
/* Check if any DPLLs are using the SSC source */
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
u32 temp = I915_READ(PCH_DPLL(i));
if (!(temp & DPLL_VCO_ENABLE))
continue;
if ((temp & PLL_REF_INPUT_MASK) ==
PLLB_REF_INPUT_SPREADSPECTRUMIN) {
using_ssc_source = true;
break;
}
}
DRM_DEBUG_KMS("has_panel %d has_lvds %d has_ck505 %d using_ssc_source %d\n",
has_panel, has_lvds, has_ck505, using_ssc_source);
/* Ironlake: try to setup display ref clock before DPLL
* enabling. This is only under driver's control after
* PCH B stepping, previous chipset stepping should be
* ignoring this setting.
*/
val = I915_READ(PCH_DREF_CONTROL);
/* As we must carefully and slowly disable/enable each source in turn,
* compute the final state we want first and check if we need to
* make any changes at all.
*/
final = val;
final &= ~DREF_NONSPREAD_SOURCE_MASK;
if (has_ck505)
final |= DREF_NONSPREAD_CK505_ENABLE;
else
final |= DREF_NONSPREAD_SOURCE_ENABLE;
final &= ~DREF_SSC_SOURCE_MASK;
final &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
final &= ~DREF_SSC1_ENABLE;
if (has_panel) {
final |= DREF_SSC_SOURCE_ENABLE;
if (intel_panel_use_ssc(dev_priv) && can_ssc)
final |= DREF_SSC1_ENABLE;
if (has_cpu_edp) {
if (intel_panel_use_ssc(dev_priv) && can_ssc)
final |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
else
final |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
} else
final |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
} else if (using_ssc_source) {
final |= DREF_SSC_SOURCE_ENABLE;
final |= DREF_SSC1_ENABLE;
}
if (final == val)
return;
/* Always enable nonspread source */
val &= ~DREF_NONSPREAD_SOURCE_MASK;
if (has_ck505)
val |= DREF_NONSPREAD_CK505_ENABLE;
else
val |= DREF_NONSPREAD_SOURCE_ENABLE;
if (has_panel) {
val &= ~DREF_SSC_SOURCE_MASK;
val |= DREF_SSC_SOURCE_ENABLE;
/* SSC must be turned on before enabling the CPU output */
if (intel_panel_use_ssc(dev_priv) && can_ssc) {
DRM_DEBUG_KMS("Using SSC on panel\n");
val |= DREF_SSC1_ENABLE;
} else
val &= ~DREF_SSC1_ENABLE;
/* Get SSC going before enabling the outputs */
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
/* Enable CPU source on CPU attached eDP */
if (has_cpu_edp) {
if (intel_panel_use_ssc(dev_priv) && can_ssc) {
DRM_DEBUG_KMS("Using SSC on eDP\n");
val |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
} else
val |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
} else
val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
} else {
DRM_DEBUG_KMS("Disabling CPU source output\n");
val &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
/* Turn off CPU output */
val |= DREF_CPU_SOURCE_OUTPUT_DISABLE;
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
if (!using_ssc_source) {
DRM_DEBUG_KMS("Disabling SSC source\n");
/* Turn off the SSC source */
val &= ~DREF_SSC_SOURCE_MASK;
val |= DREF_SSC_SOURCE_DISABLE;
/* Turn off SSC1 */
val &= ~DREF_SSC1_ENABLE;
I915_WRITE(PCH_DREF_CONTROL, val);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
}
}
BUG_ON(val != final);
}
static void lpt_reset_fdi_mphy(struct drm_i915_private *dev_priv)
{
u32 tmp;
tmp = I915_READ(SOUTH_CHICKEN2);
tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
I915_WRITE(SOUTH_CHICKEN2, tmp);
if (wait_for_us(I915_READ(SOUTH_CHICKEN2) &
FDI_MPHY_IOSFSB_RESET_STATUS, 100))
DRM_ERROR("FDI mPHY reset assert timeout\n");
tmp = I915_READ(SOUTH_CHICKEN2);
tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
I915_WRITE(SOUTH_CHICKEN2, tmp);
if (wait_for_us((I915_READ(SOUTH_CHICKEN2) &
FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
DRM_ERROR("FDI mPHY reset de-assert timeout\n");
}
/* WaMPhyProgramming:hsw */
static void lpt_program_fdi_mphy(struct drm_i915_private *dev_priv)
{
u32 tmp;
tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
tmp &= ~(0xFF << 24);
tmp |= (0x12 << 24);
intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
tmp |= (1 << 11);
intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2108, SBI_MPHY);
tmp |= (1 << 11);
intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
tmp |= (1 << 24) | (1 << 21) | (1 << 18);
intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x216C, SBI_MPHY);
tmp |= (1 << 24) | (1 << 21) | (1 << 18);
intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
tmp &= ~(7 << 13);
tmp |= (5 << 13);
intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
tmp &= ~(7 << 13);
tmp |= (5 << 13);
intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
tmp &= ~0xFF;
tmp |= 0x1C;
intel_sbi_write(dev_priv, 0x208C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x218C, SBI_MPHY);
tmp &= ~0xFF;
tmp |= 0x1C;
intel_sbi_write(dev_priv, 0x218C, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2098, SBI_MPHY);
tmp &= ~(0xFF << 16);
tmp |= (0x1C << 16);
intel_sbi_write(dev_priv, 0x2098, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x2198, SBI_MPHY);
tmp &= ~(0xFF << 16);
tmp |= (0x1C << 16);
intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
tmp |= (1 << 27);
intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
tmp |= (1 << 27);
intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
tmp &= ~(0xF << 28);
tmp |= (4 << 28);
intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
tmp &= ~(0xF << 28);
tmp |= (4 << 28);
intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
}
/* Implements 3 different sequences from BSpec chapter "Display iCLK
* Programming" based on the parameters passed:
* - Sequence to enable CLKOUT_DP
* - Sequence to enable CLKOUT_DP without spread
* - Sequence to enable CLKOUT_DP for FDI usage and configure PCH FDI I/O
*/
static void lpt_enable_clkout_dp(struct drm_i915_private *dev_priv,
bool with_spread, bool with_fdi)
{
u32 reg, tmp;
if (WARN(with_fdi && !with_spread, "FDI requires downspread\n"))
with_spread = true;
if (WARN(HAS_PCH_LPT_LP(dev_priv) &&
with_fdi, "LP PCH doesn't have FDI\n"))
with_fdi = false;
mutex_lock(&dev_priv->sb_lock);
tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
tmp &= ~SBI_SSCCTL_DISABLE;
tmp |= SBI_SSCCTL_PATHALT;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
udelay(24);
if (with_spread) {
tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
tmp &= ~SBI_SSCCTL_PATHALT;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
if (with_fdi) {
lpt_reset_fdi_mphy(dev_priv);
lpt_program_fdi_mphy(dev_priv);
}
}
reg = HAS_PCH_LPT_LP(dev_priv) ? SBI_GEN0 : SBI_DBUFF0;
tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
tmp |= SBI_GEN0_CFG_BUFFENABLE_DISABLE;
intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
}
/* Sequence to disable CLKOUT_DP */
void lpt_disable_clkout_dp(struct drm_i915_private *dev_priv)
{
u32 reg, tmp;
mutex_lock(&dev_priv->sb_lock);
reg = HAS_PCH_LPT_LP(dev_priv) ? SBI_GEN0 : SBI_DBUFF0;
tmp = intel_sbi_read(dev_priv, reg, SBI_ICLK);
tmp &= ~SBI_GEN0_CFG_BUFFENABLE_DISABLE;
intel_sbi_write(dev_priv, reg, tmp, SBI_ICLK);
tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
if (!(tmp & SBI_SSCCTL_DISABLE)) {
if (!(tmp & SBI_SSCCTL_PATHALT)) {
tmp |= SBI_SSCCTL_PATHALT;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
udelay(32);
}
tmp |= SBI_SSCCTL_DISABLE;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
}
mutex_unlock(&dev_priv->sb_lock);
}
#define BEND_IDX(steps) ((50 + (steps)) / 5)
static const u16 sscdivintphase[] = {
[BEND_IDX( 50)] = 0x3B23,
[BEND_IDX( 45)] = 0x3B23,
[BEND_IDX( 40)] = 0x3C23,
[BEND_IDX( 35)] = 0x3C23,
[BEND_IDX( 30)] = 0x3D23,
[BEND_IDX( 25)] = 0x3D23,
[BEND_IDX( 20)] = 0x3E23,
[BEND_IDX( 15)] = 0x3E23,
[BEND_IDX( 10)] = 0x3F23,
[BEND_IDX( 5)] = 0x3F23,
[BEND_IDX( 0)] = 0x0025,
[BEND_IDX( -5)] = 0x0025,
[BEND_IDX(-10)] = 0x0125,
[BEND_IDX(-15)] = 0x0125,
[BEND_IDX(-20)] = 0x0225,
[BEND_IDX(-25)] = 0x0225,
[BEND_IDX(-30)] = 0x0325,
[BEND_IDX(-35)] = 0x0325,
[BEND_IDX(-40)] = 0x0425,
[BEND_IDX(-45)] = 0x0425,
[BEND_IDX(-50)] = 0x0525,
};
/*
* Bend CLKOUT_DP
* steps -50 to 50 inclusive, in steps of 5
* < 0 slow down the clock, > 0 speed up the clock, 0 == no bend (135MHz)
* change in clock period = -(steps / 10) * 5.787 ps
*/
static void lpt_bend_clkout_dp(struct drm_i915_private *dev_priv, int steps)
{
u32 tmp;
int idx = BEND_IDX(steps);
if (WARN_ON(steps % 5 != 0))
return;
if (WARN_ON(idx >= ARRAY_SIZE(sscdivintphase)))
return;
mutex_lock(&dev_priv->sb_lock);
if (steps % 10 != 0)
tmp = 0xAAAAAAAB;
else
tmp = 0x00000000;
intel_sbi_write(dev_priv, SBI_SSCDITHPHASE, tmp, SBI_ICLK);
tmp = intel_sbi_read(dev_priv, SBI_SSCDIVINTPHASE, SBI_ICLK);
tmp &= 0xffff0000;
tmp |= sscdivintphase[idx];
intel_sbi_write(dev_priv, SBI_SSCDIVINTPHASE, tmp, SBI_ICLK);
mutex_unlock(&dev_priv->sb_lock);
}
#undef BEND_IDX
static bool spll_uses_pch_ssc(struct drm_i915_private *dev_priv)
{
u32 fuse_strap = I915_READ(FUSE_STRAP);
u32 ctl = I915_READ(SPLL_CTL);
if ((ctl & SPLL_PLL_ENABLE) == 0)
return false;
if ((ctl & SPLL_REF_MASK) == SPLL_REF_MUXED_SSC &&
(fuse_strap & HSW_CPU_SSC_ENABLE) == 0)
return true;
if (IS_BROADWELL(dev_priv) &&
(ctl & SPLL_REF_MASK) == SPLL_REF_PCH_SSC_BDW)
return true;
return false;
}
static bool wrpll_uses_pch_ssc(struct drm_i915_private *dev_priv,
enum intel_dpll_id id)
{
u32 fuse_strap = I915_READ(FUSE_STRAP);
u32 ctl = I915_READ(WRPLL_CTL(id));
if ((ctl & WRPLL_PLL_ENABLE) == 0)
return false;
if ((ctl & WRPLL_REF_MASK) == WRPLL_REF_PCH_SSC)
return true;
if ((IS_BROADWELL(dev_priv) || IS_HSW_ULT(dev_priv)) &&
(ctl & WRPLL_REF_MASK) == WRPLL_REF_MUXED_SSC_BDW &&
(fuse_strap & HSW_CPU_SSC_ENABLE) == 0)
return true;
return false;
}
static void lpt_init_pch_refclk(struct drm_i915_private *dev_priv)
{
struct intel_encoder *encoder;
bool pch_ssc_in_use = false;
bool has_fdi = false;
for_each_intel_encoder(&dev_priv->drm, encoder) {
switch (encoder->type) {
case INTEL_OUTPUT_ANALOG:
has_fdi = true;
break;
default:
break;
}
}
/*
* The BIOS may have decided to use the PCH SSC
* reference so we must not disable it until the
* relevant PLLs have stopped relying on it. We'll
* just leave the PCH SSC reference enabled in case
* any active PLL is using it. It will get disabled
* after runtime suspend if we don't have FDI.
*
* TODO: Move the whole reference clock handling
* to the modeset sequence proper so that we can
* actually enable/disable/reconfigure these things
* safely. To do that we need to introduce a real
* clock hierarchy. That would also allow us to do
* clock bending finally.
*/
if (spll_uses_pch_ssc(dev_priv)) {
DRM_DEBUG_KMS("SPLL using PCH SSC\n");
pch_ssc_in_use = true;
}
if (wrpll_uses_pch_ssc(dev_priv, DPLL_ID_WRPLL1)) {
DRM_DEBUG_KMS("WRPLL1 using PCH SSC\n");
pch_ssc_in_use = true;
}
if (wrpll_uses_pch_ssc(dev_priv, DPLL_ID_WRPLL2)) {
DRM_DEBUG_KMS("WRPLL2 using PCH SSC\n");
pch_ssc_in_use = true;
}
if (pch_ssc_in_use)
return;
if (has_fdi) {
lpt_bend_clkout_dp(dev_priv, 0);
lpt_enable_clkout_dp(dev_priv, true, true);
} else {
lpt_disable_clkout_dp(dev_priv);
}
}
/*
* Initialize reference clocks when the driver loads
*/
void intel_init_pch_refclk(struct drm_i915_private *dev_priv)
{
if (HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv))
ironlake_init_pch_refclk(dev_priv);
else if (HAS_PCH_LPT(dev_priv))
lpt_init_pch_refclk(dev_priv);
}
static void ironlake_set_pipeconf(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
u32 val;
val = 0;
switch (crtc_state->pipe_bpp) {
case 18:
val |= PIPECONF_6BPC;
break;
case 24:
val |= PIPECONF_8BPC;
break;
case 30:
val |= PIPECONF_10BPC;
break;
case 36:
val |= PIPECONF_12BPC;
break;
default:
/* Case prevented by intel_choose_pipe_bpp_dither. */
BUG();
}
if (crtc_state->dither)
val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
val |= PIPECONF_INTERLACED_ILK;
else
val |= PIPECONF_PROGRESSIVE;
/*
* This would end up with an odd purple hue over
* the entire display. Make sure we don't do it.
*/
WARN_ON(crtc_state->limited_color_range &&
crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB);
if (crtc_state->limited_color_range)
val |= PIPECONF_COLOR_RANGE_SELECT;
if (crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
val |= PIPECONF_OUTPUT_COLORSPACE_YUV709;
val |= PIPECONF_GAMMA_MODE(crtc_state->gamma_mode);
I915_WRITE(PIPECONF(pipe), val);
POSTING_READ(PIPECONF(pipe));
}
static void haswell_set_pipeconf(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
u32 val = 0;
if (IS_HASWELL(dev_priv) && crtc_state->dither)
val |= (PIPECONF_DITHER_EN | PIPECONF_DITHER_TYPE_SP);
if (crtc_state->base.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE)
val |= PIPECONF_INTERLACED_ILK;
else
val |= PIPECONF_PROGRESSIVE;
if (IS_HASWELL(dev_priv) &&
crtc_state->output_format != INTEL_OUTPUT_FORMAT_RGB)
val |= PIPECONF_OUTPUT_COLORSPACE_YUV_HSW;
I915_WRITE(PIPECONF(cpu_transcoder), val);
POSTING_READ(PIPECONF(cpu_transcoder));
}
static void bdw_set_pipemisc(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 val = 0;
switch (crtc_state->pipe_bpp) {
case 18:
val |= PIPEMISC_DITHER_6_BPC;
break;
case 24:
val |= PIPEMISC_DITHER_8_BPC;
break;
case 30:
val |= PIPEMISC_DITHER_10_BPC;
break;
case 36:
val |= PIPEMISC_DITHER_12_BPC;
break;
default:
MISSING_CASE(crtc_state->pipe_bpp);
break;
}
if (crtc_state->dither)
val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
val |= PIPEMISC_OUTPUT_COLORSPACE_YUV;
if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
val |= PIPEMISC_YUV420_ENABLE |
PIPEMISC_YUV420_MODE_FULL_BLEND;
if (INTEL_GEN(dev_priv) >= 11 &&
(crtc_state->active_planes & ~(icl_hdr_plane_mask() |
BIT(PLANE_CURSOR))) == 0)
val |= PIPEMISC_HDR_MODE_PRECISION;
I915_WRITE(PIPEMISC(crtc->pipe), val);
}
int bdw_get_pipemisc_bpp(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 tmp;
tmp = I915_READ(PIPEMISC(crtc->pipe));
switch (tmp & PIPEMISC_DITHER_BPC_MASK) {
case PIPEMISC_DITHER_6_BPC:
return 18;
case PIPEMISC_DITHER_8_BPC:
return 24;
case PIPEMISC_DITHER_10_BPC:
return 30;
case PIPEMISC_DITHER_12_BPC:
return 36;
default:
MISSING_CASE(tmp);
return 0;
}
}
int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp)
{
/*
* Account for spread spectrum to avoid
* oversubscribing the link. Max center spread
* is 2.5%; use 5% for safety's sake.
*/
u32 bps = target_clock * bpp * 21 / 20;
return DIV_ROUND_UP(bps, link_bw * 8);
}
static bool ironlake_needs_fb_cb_tune(struct dpll *dpll, int factor)
{
return i9xx_dpll_compute_m(dpll) < factor * dpll->n;
}
static void ironlake_compute_dpll(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state,
struct dpll *reduced_clock)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 dpll, fp, fp2;
int factor;
/* Enable autotuning of the PLL clock (if permissible) */
factor = 21;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if ((intel_panel_use_ssc(dev_priv) &&
dev_priv->vbt.lvds_ssc_freq == 100000) ||
(HAS_PCH_IBX(dev_priv) &&
intel_is_dual_link_lvds(dev_priv)))
factor = 25;
} else if (crtc_state->sdvo_tv_clock) {
factor = 20;
}
fp = i9xx_dpll_compute_fp(&crtc_state->dpll);
if (ironlake_needs_fb_cb_tune(&crtc_state->dpll, factor))
fp |= FP_CB_TUNE;
if (reduced_clock) {
fp2 = i9xx_dpll_compute_fp(reduced_clock);
if (reduced_clock->m < factor * reduced_clock->n)
fp2 |= FP_CB_TUNE;
} else {
fp2 = fp;
}
dpll = 0;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS))
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL;
dpll |= (crtc_state->pixel_multiplier - 1)
<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_SDVO) ||
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI))
dpll |= DPLL_SDVO_HIGH_SPEED;
if (intel_crtc_has_dp_encoder(crtc_state))
dpll |= DPLL_SDVO_HIGH_SPEED;
/*
* The high speed IO clock is only really required for
* SDVO/HDMI/DP, but we also enable it for CRT to make it
* possible to share the DPLL between CRT and HDMI. Enabling
* the clock needlessly does no real harm, except use up a
* bit of power potentially.
*
* We'll limit this to IVB with 3 pipes, since it has only two
* DPLLs and so DPLL sharing is the only way to get three pipes
* driving PCH ports at the same time. On SNB we could do this,
* and potentially avoid enabling the second DPLL, but it's not
* clear if it''s a win or loss power wise. No point in doing
* this on ILK at all since it has a fixed DPLL<->pipe mapping.
*/
if (INTEL_NUM_PIPES(dev_priv) == 3 &&
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_ANALOG))
dpll |= DPLL_SDVO_HIGH_SPEED;
/* compute bitmask from p1 value */
dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
/* also FPA1 */
dpll |= (1 << (crtc_state->dpll.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
switch (crtc_state->dpll.p2) {
case 5:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_5;
break;
case 7:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_7;
break;
case 10:
dpll |= DPLL_DAC_SERIAL_P2_CLOCK_DIV_10;
break;
case 14:
dpll |= DPLLB_LVDS_P2_CLOCK_DIV_14;
break;
}
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS) &&
intel_panel_use_ssc(dev_priv))
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
dpll |= DPLL_VCO_ENABLE;
crtc_state->dpll_hw_state.dpll = dpll;
crtc_state->dpll_hw_state.fp0 = fp;
crtc_state->dpll_hw_state.fp1 = fp2;
}
static int ironlake_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_atomic_state *state =
to_intel_atomic_state(crtc_state->base.state);
const struct intel_limit *limit;
int refclk = 120000;
memset(&crtc_state->dpll_hw_state, 0,
sizeof(crtc_state->dpll_hw_state));
/* CPU eDP is the only output that doesn't need a PCH PLL of its own. */
if (!crtc_state->has_pch_encoder)
return 0;
if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_LVDS)) {
if (intel_panel_use_ssc(dev_priv)) {
DRM_DEBUG_KMS("using SSC reference clock of %d kHz\n",
dev_priv->vbt.lvds_ssc_freq);
refclk = dev_priv->vbt.lvds_ssc_freq;
}
if (intel_is_dual_link_lvds(dev_priv)) {
if (refclk == 100000)
limit = &intel_limits_ironlake_dual_lvds_100m;
else
limit = &intel_limits_ironlake_dual_lvds;
} else {
if (refclk == 100000)
limit = &intel_limits_ironlake_single_lvds_100m;
else
limit = &intel_limits_ironlake_single_lvds;
}
} else {
limit = &intel_limits_ironlake_dac;
}
if (!crtc_state->clock_set &&
!g4x_find_best_dpll(limit, crtc_state, crtc_state->port_clock,
refclk, NULL, &crtc_state->dpll)) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
return -EINVAL;
}
ironlake_compute_dpll(crtc, crtc_state, NULL);
if (!intel_reserve_shared_dplls(state, crtc, NULL)) {
DRM_DEBUG_KMS("failed to find PLL for pipe %c\n",
pipe_name(crtc->pipe));
return -EINVAL;
}
return 0;
}
static void intel_pch_transcoder_get_m_n(struct intel_crtc *crtc,
struct intel_link_m_n *m_n)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
m_n->link_m = I915_READ(PCH_TRANS_LINK_M1(pipe));
m_n->link_n = I915_READ(PCH_TRANS_LINK_N1(pipe));
m_n->gmch_m = I915_READ(PCH_TRANS_DATA_M1(pipe))
& ~TU_SIZE_MASK;
m_n->gmch_n = I915_READ(PCH_TRANS_DATA_N1(pipe));
m_n->tu = ((I915_READ(PCH_TRANS_DATA_M1(pipe))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
}
static void intel_cpu_transcoder_get_m_n(struct intel_crtc *crtc,
enum transcoder transcoder,
struct intel_link_m_n *m_n,
struct intel_link_m_n *m2_n2)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
enum pipe pipe = crtc->pipe;
if (INTEL_GEN(dev_priv) >= 5) {
m_n->link_m = I915_READ(PIPE_LINK_M1(transcoder));
m_n->link_n = I915_READ(PIPE_LINK_N1(transcoder));
m_n->gmch_m = I915_READ(PIPE_DATA_M1(transcoder))
& ~TU_SIZE_MASK;
m_n->gmch_n = I915_READ(PIPE_DATA_N1(transcoder));
m_n->tu = ((I915_READ(PIPE_DATA_M1(transcoder))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
if (m2_n2 && transcoder_has_m2_n2(dev_priv, transcoder)) {
m2_n2->link_m = I915_READ(PIPE_LINK_M2(transcoder));
m2_n2->link_n = I915_READ(PIPE_LINK_N2(transcoder));
m2_n2->gmch_m = I915_READ(PIPE_DATA_M2(transcoder))
& ~TU_SIZE_MASK;
m2_n2->gmch_n = I915_READ(PIPE_DATA_N2(transcoder));
m2_n2->tu = ((I915_READ(PIPE_DATA_M2(transcoder))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
}
} else {
m_n->link_m = I915_READ(PIPE_LINK_M_G4X(pipe));
m_n->link_n = I915_READ(PIPE_LINK_N_G4X(pipe));
m_n->gmch_m = I915_READ(PIPE_DATA_M_G4X(pipe))
& ~TU_SIZE_MASK;
m_n->gmch_n = I915_READ(PIPE_DATA_N_G4X(pipe));
m_n->tu = ((I915_READ(PIPE_DATA_M_G4X(pipe))
& TU_SIZE_MASK) >> TU_SIZE_SHIFT) + 1;
}
}
void intel_dp_get_m_n(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
if (pipe_config->has_pch_encoder)
intel_pch_transcoder_get_m_n(crtc, &pipe_config->dp_m_n);
else
intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
&pipe_config->dp_m_n,
&pipe_config->dp_m2_n2);
}
static void ironlake_get_fdi_m_n_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
intel_cpu_transcoder_get_m_n(crtc, pipe_config->cpu_transcoder,
&pipe_config->fdi_m_n, NULL);
}
static void skylake_get_pfit_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_scaler_state *scaler_state = &pipe_config->scaler_state;
u32 ps_ctrl = 0;
int id = -1;
int i;
/* find scaler attached to this pipe */
for (i = 0; i < crtc->num_scalers; i++) {
ps_ctrl = I915_READ(SKL_PS_CTRL(crtc->pipe, i));
if (ps_ctrl & PS_SCALER_EN && !(ps_ctrl & PS_PLANE_SEL_MASK)) {
id = i;
pipe_config->pch_pfit.enabled = true;
pipe_config->pch_pfit.pos = I915_READ(SKL_PS_WIN_POS(crtc->pipe, i));
pipe_config->pch_pfit.size = I915_READ(SKL_PS_WIN_SZ(crtc->pipe, i));
scaler_state->scalers[i].in_use = true;
break;
}
}
scaler_state->scaler_id = id;
if (id >= 0) {
scaler_state->scaler_users |= (1 << SKL_CRTC_INDEX);
} else {
scaler_state->scaler_users &= ~(1 << SKL_CRTC_INDEX);
}
}
static void
skylake_get_initial_plane_config(struct intel_crtc *crtc,
struct intel_initial_plane_config *plane_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_plane *plane = to_intel_plane(crtc->base.primary);
enum plane_id plane_id = plane->id;
enum pipe pipe;
u32 val, base, offset, stride_mult, tiling, alpha;
int fourcc, pixel_format;
unsigned int aligned_height;
struct drm_framebuffer *fb;
struct intel_framebuffer *intel_fb;
if (!plane->get_hw_state(plane, &pipe))
return;
WARN_ON(pipe != crtc->pipe);
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb) {
DRM_DEBUG_KMS("failed to alloc fb\n");
return;
}
fb = &intel_fb->base;
fb->dev = dev;
val = I915_READ(PLANE_CTL(pipe, plane_id));
if (INTEL_GEN(dev_priv) >= 11)
pixel_format = val & ICL_PLANE_CTL_FORMAT_MASK;
else
pixel_format = val & PLANE_CTL_FORMAT_MASK;
if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) {
alpha = I915_READ(PLANE_COLOR_CTL(pipe, plane_id));
alpha &= PLANE_COLOR_ALPHA_MASK;
} else {
alpha = val & PLANE_CTL_ALPHA_MASK;
}
fourcc = skl_format_to_fourcc(pixel_format,
val & PLANE_CTL_ORDER_RGBX, alpha);
fb->format = drm_format_info(fourcc);
tiling = val & PLANE_CTL_TILED_MASK;
switch (tiling) {
case PLANE_CTL_TILED_LINEAR:
fb->modifier = DRM_FORMAT_MOD_LINEAR;
break;
case PLANE_CTL_TILED_X:
plane_config->tiling = I915_TILING_X;
fb->modifier = I915_FORMAT_MOD_X_TILED;
break;
case PLANE_CTL_TILED_Y:
plane_config->tiling = I915_TILING_Y;
if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
fb->modifier = I915_FORMAT_MOD_Y_TILED_CCS;
else
fb->modifier = I915_FORMAT_MOD_Y_TILED;
break;
case PLANE_CTL_TILED_YF:
if (val & PLANE_CTL_RENDER_DECOMPRESSION_ENABLE)
fb->modifier = I915_FORMAT_MOD_Yf_TILED_CCS;
else
fb->modifier = I915_FORMAT_MOD_Yf_TILED;
break;
default:
MISSING_CASE(tiling);
goto error;
}
/*
* DRM_MODE_ROTATE_ is counter clockwise to stay compatible with Xrandr
* while i915 HW rotation is clockwise, thats why this swapping.
*/
switch (val & PLANE_CTL_ROTATE_MASK) {
case PLANE_CTL_ROTATE_0:
plane_config->rotation = DRM_MODE_ROTATE_0;
break;
case PLANE_CTL_ROTATE_90:
plane_config->rotation = DRM_MODE_ROTATE_270;
break;
case PLANE_CTL_ROTATE_180:
plane_config->rotation = DRM_MODE_ROTATE_180;
break;
case PLANE_CTL_ROTATE_270:
plane_config->rotation = DRM_MODE_ROTATE_90;
break;
}
if (INTEL_GEN(dev_priv) >= 10 &&
val & PLANE_CTL_FLIP_HORIZONTAL)
plane_config->rotation |= DRM_MODE_REFLECT_X;
base = I915_READ(PLANE_SURF(pipe, plane_id)) & 0xfffff000;
plane_config->base = base;
offset = I915_READ(PLANE_OFFSET(pipe, plane_id));
val = I915_READ(PLANE_SIZE(pipe, plane_id));
fb->height = ((val >> 16) & 0xffff) + 1;
fb->width = ((val >> 0) & 0xffff) + 1;
val = I915_READ(PLANE_STRIDE(pipe, plane_id));
stride_mult = skl_plane_stride_mult(fb, 0, DRM_MODE_ROTATE_0);
fb->pitches[0] = (val & 0x3ff) * stride_mult;
aligned_height = intel_fb_align_height(fb, 0, fb->height);
plane_config->size = fb->pitches[0] * aligned_height;
DRM_DEBUG_KMS("%s/%s with fb: size=%dx%d@%d, offset=%x, pitch %d, size 0x%x\n",
crtc->base.name, plane->base.name, fb->width, fb->height,
fb->format->cpp[0] * 8, base, fb->pitches[0],
plane_config->size);
plane_config->fb = intel_fb;
return;
error:
kfree(intel_fb);
}
static void ironlake_get_pfit_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
u32 tmp;
tmp = I915_READ(PF_CTL(crtc->pipe));
if (tmp & PF_ENABLE) {
pipe_config->pch_pfit.enabled = true;
pipe_config->pch_pfit.pos = I915_READ(PF_WIN_POS(crtc->pipe));
pipe_config->pch_pfit.size = I915_READ(PF_WIN_SZ(crtc->pipe));
/* We currently do not free assignements of panel fitters on
* ivb/hsw (since we don't use the higher upscaling modes which
* differentiates them) so just WARN about this case for now. */
if (IS_GEN(dev_priv, 7)) {
WARN_ON((tmp & PF_PIPE_SEL_MASK_IVB) !=
PF_PIPE_SEL_IVB(crtc->pipe));
}
}
}
static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
intel_wakeref_t wakeref;
u32 tmp;
bool ret;
power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wakeref)
return false;
pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
pipe_config->shared_dpll = NULL;
pipe_config->master_transcoder = INVALID_TRANSCODER;
ret = false;
tmp = I915_READ(PIPECONF(crtc->pipe));
if (!(tmp & PIPECONF_ENABLE))
goto out;
switch (tmp & PIPECONF_BPC_MASK) {
case PIPECONF_6BPC:
pipe_config->pipe_bpp = 18;
break;
case PIPECONF_8BPC:
pipe_config->pipe_bpp = 24;
break;
case PIPECONF_10BPC:
pipe_config->pipe_bpp = 30;
break;
case PIPECONF_12BPC:
pipe_config->pipe_bpp = 36;
break;
default:
break;
}
if (tmp & PIPECONF_COLOR_RANGE_SELECT)
pipe_config->limited_color_range = true;
switch (tmp & PIPECONF_OUTPUT_COLORSPACE_MASK) {
case PIPECONF_OUTPUT_COLORSPACE_YUV601:
case PIPECONF_OUTPUT_COLORSPACE_YUV709:
pipe_config->output_format = INTEL_OUTPUT_FORMAT_YCBCR444;
break;
default:
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
break;
}
pipe_config->gamma_mode = (tmp & PIPECONF_GAMMA_MODE_MASK_ILK) >>
PIPECONF_GAMMA_MODE_SHIFT;
pipe_config->csc_mode = I915_READ(PIPE_CSC_MODE(crtc->pipe));
i9xx_get_pipe_color_config(pipe_config);
intel_color_get_config(pipe_config);
if (I915_READ(PCH_TRANSCONF(crtc->pipe)) & TRANS_ENABLE) {
struct intel_shared_dpll *pll;
enum intel_dpll_id pll_id;
pipe_config->has_pch_encoder = true;
tmp = I915_READ(FDI_RX_CTL(crtc->pipe));
pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
FDI_DP_PORT_WIDTH_SHIFT) + 1;
ironlake_get_fdi_m_n_config(crtc, pipe_config);
if (HAS_PCH_IBX(dev_priv)) {
/*
* The pipe->pch transcoder and pch transcoder->pll
* mapping is fixed.
*/
pll_id = (enum intel_dpll_id) crtc->pipe;
} else {
tmp = I915_READ(PCH_DPLL_SEL);
if (tmp & TRANS_DPLLB_SEL(crtc->pipe))
pll_id = DPLL_ID_PCH_PLL_B;
else
pll_id= DPLL_ID_PCH_PLL_A;
}
pipe_config->shared_dpll =
intel_get_shared_dpll_by_id(dev_priv, pll_id);
pll = pipe_config->shared_dpll;
WARN_ON(!pll->info->funcs->get_hw_state(dev_priv, pll,
&pipe_config->dpll_hw_state));
tmp = pipe_config->dpll_hw_state.dpll;
pipe_config->pixel_multiplier =
((tmp & PLL_REF_SDVO_HDMI_MULTIPLIER_MASK)
>> PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT) + 1;
ironlake_pch_clock_get(crtc, pipe_config);
} else {
pipe_config->pixel_multiplier = 1;
}
intel_get_pipe_timings(crtc, pipe_config);
intel_get_pipe_src_size(crtc, pipe_config);
ironlake_get_pfit_config(crtc, pipe_config);
ret = true;
out:
intel_display_power_put(dev_priv, power_domain, wakeref);
return ret;
}
static int haswell_crtc_compute_clock(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_atomic_state *state =
to_intel_atomic_state(crtc_state->base.state);
if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI) ||
INTEL_GEN(dev_priv) >= 11) {
struct intel_encoder *encoder =
intel_get_crtc_new_encoder(state, crtc_state);
if (!intel_reserve_shared_dplls(state, crtc, encoder)) {
DRM_DEBUG_KMS("failed to find PLL for pipe %c\n",
pipe_name(crtc->pipe));
return -EINVAL;
}
}
return 0;
}
static void cannonlake_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum intel_dpll_id id;
u32 temp;
temp = I915_READ(DPCLKA_CFGCR0) & DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(port);
id = temp >> DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(port);
if (WARN_ON(id < SKL_DPLL0 || id > SKL_DPLL2))
return;
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
static void icelake_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum phy phy = intel_port_to_phy(dev_priv, port);
enum icl_port_dpll_id port_dpll_id;
enum intel_dpll_id id;
u32 temp;
if (intel_phy_is_combo(dev_priv, phy)) {
temp = I915_READ(ICL_DPCLKA_CFGCR0) &
ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_MASK(phy);
id = temp >> ICL_DPCLKA_CFGCR0_DDI_CLK_SEL_SHIFT(phy);
port_dpll_id = ICL_PORT_DPLL_DEFAULT;
} else if (intel_phy_is_tc(dev_priv, phy)) {
u32 clk_sel = I915_READ(DDI_CLK_SEL(port)) & DDI_CLK_SEL_MASK;
if (clk_sel == DDI_CLK_SEL_MG) {
id = icl_tc_port_to_pll_id(intel_port_to_tc(dev_priv,
port));
port_dpll_id = ICL_PORT_DPLL_MG_PHY;
} else {
WARN_ON(clk_sel < DDI_CLK_SEL_TBT_162);
id = DPLL_ID_ICL_TBTPLL;
port_dpll_id = ICL_PORT_DPLL_DEFAULT;
}
} else {
WARN(1, "Invalid port %x\n", port);
return;
}
pipe_config->icl_port_dplls[port_dpll_id].pll =
intel_get_shared_dpll_by_id(dev_priv, id);
icl_set_active_port_dpll(pipe_config, port_dpll_id);
}
static void bxt_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum intel_dpll_id id;
switch (port) {
case PORT_A:
id = DPLL_ID_SKL_DPLL0;
break;
case PORT_B:
id = DPLL_ID_SKL_DPLL1;
break;
case PORT_C:
id = DPLL_ID_SKL_DPLL2;
break;
default:
DRM_ERROR("Incorrect port type\n");
return;
}
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
static void skylake_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum intel_dpll_id id;
u32 temp;
temp = I915_READ(DPLL_CTRL2) & DPLL_CTRL2_DDI_CLK_SEL_MASK(port);
id = temp >> (port * 3 + 1);
if (WARN_ON(id < SKL_DPLL0 || id > SKL_DPLL3))
return;
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
static void haswell_get_ddi_pll(struct drm_i915_private *dev_priv,
enum port port,
struct intel_crtc_state *pipe_config)
{
enum intel_dpll_id id;
u32 ddi_pll_sel = I915_READ(PORT_CLK_SEL(port));
switch (ddi_pll_sel) {
case PORT_CLK_SEL_WRPLL1:
id = DPLL_ID_WRPLL1;
break;
case PORT_CLK_SEL_WRPLL2:
id = DPLL_ID_WRPLL2;
break;
case PORT_CLK_SEL_SPLL:
id = DPLL_ID_SPLL;
break;
case PORT_CLK_SEL_LCPLL_810:
id = DPLL_ID_LCPLL_810;
break;
case PORT_CLK_SEL_LCPLL_1350:
id = DPLL_ID_LCPLL_1350;
break;
case PORT_CLK_SEL_LCPLL_2700:
id = DPLL_ID_LCPLL_2700;
break;
default:
MISSING_CASE(ddi_pll_sel);
/* fall through */
case PORT_CLK_SEL_NONE:
return;
}
pipe_config->shared_dpll = intel_get_shared_dpll_by_id(dev_priv, id);
}
static bool hsw_get_transcoder_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config,
u64 *power_domain_mask,
intel_wakeref_t *wakerefs)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
unsigned long panel_transcoder_mask = 0;
unsigned long enabled_panel_transcoders = 0;
enum transcoder panel_transcoder;
intel_wakeref_t wf;
u32 tmp;
if (INTEL_GEN(dev_priv) >= 11)
panel_transcoder_mask |=
BIT(TRANSCODER_DSI_0) | BIT(TRANSCODER_DSI_1);
if (HAS_TRANSCODER_EDP(dev_priv))
panel_transcoder_mask |= BIT(TRANSCODER_EDP);
/*
* The pipe->transcoder mapping is fixed with the exception of the eDP
* and DSI transcoders handled below.
*/
pipe_config->cpu_transcoder = (enum transcoder) crtc->pipe;
/*
* XXX: Do intel_display_power_get_if_enabled before reading this (for
* consistency and less surprising code; it's in always on power).
*/
for_each_set_bit(panel_transcoder,
&panel_transcoder_mask,
ARRAY_SIZE(INTEL_INFO(dev_priv)->trans_offsets)) {
bool force_thru = false;
enum pipe trans_pipe;
tmp = I915_READ(TRANS_DDI_FUNC_CTL(panel_transcoder));
if (!(tmp & TRANS_DDI_FUNC_ENABLE))
continue;
/*
* Log all enabled ones, only use the first one.
*
* FIXME: This won't work for two separate DSI displays.
*/
enabled_panel_transcoders |= BIT(panel_transcoder);
if (enabled_panel_transcoders != BIT(panel_transcoder))
continue;
switch (tmp & TRANS_DDI_EDP_INPUT_MASK) {
default:
WARN(1, "unknown pipe linked to transcoder %s\n",
transcoder_name(panel_transcoder));
/* fall through */
case TRANS_DDI_EDP_INPUT_A_ONOFF:
force_thru = true;
/* fall through */
case TRANS_DDI_EDP_INPUT_A_ON:
trans_pipe = PIPE_A;
break;
case TRANS_DDI_EDP_INPUT_B_ONOFF:
trans_pipe = PIPE_B;
break;
case TRANS_DDI_EDP_INPUT_C_ONOFF:
trans_pipe = PIPE_C;
break;
}
if (trans_pipe == crtc->pipe) {
pipe_config->cpu_transcoder = panel_transcoder;
pipe_config->pch_pfit.force_thru = force_thru;
}
}
/*
* Valid combos: none, eDP, DSI0, DSI1, DSI0+DSI1
*/
WARN_ON((enabled_panel_transcoders & BIT(TRANSCODER_EDP)) &&
enabled_panel_transcoders != BIT(TRANSCODER_EDP));
power_domain = POWER_DOMAIN_TRANSCODER(pipe_config->cpu_transcoder);
WARN_ON(*power_domain_mask & BIT_ULL(power_domain));
wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wf)
return false;
wakerefs[power_domain] = wf;
*power_domain_mask |= BIT_ULL(power_domain);
tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
return tmp & PIPECONF_ENABLE;
}
static bool bxt_get_dsi_transcoder_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config,
u64 *power_domain_mask,
intel_wakeref_t *wakerefs)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum intel_display_power_domain power_domain;
enum transcoder cpu_transcoder;
intel_wakeref_t wf;
enum port port;
u32 tmp;
for_each_port_masked(port, BIT(PORT_A) | BIT(PORT_C)) {
if (port == PORT_A)
cpu_transcoder = TRANSCODER_DSI_A;
else
cpu_transcoder = TRANSCODER_DSI_C;
power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
WARN_ON(*power_domain_mask & BIT_ULL(power_domain));
wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wf)
continue;
wakerefs[power_domain] = wf;
*power_domain_mask |= BIT_ULL(power_domain);
/*
* The PLL needs to be enabled with a valid divider
* configuration, otherwise accessing DSI registers will hang
* the machine. See BSpec North Display Engine
* registers/MIPI[BXT]. We can break out here early, since we
* need the same DSI PLL to be enabled for both DSI ports.
*/
if (!bxt_dsi_pll_is_enabled(dev_priv))
break;
/* XXX: this works for video mode only */
tmp = I915_READ(BXT_MIPI_PORT_CTRL(port));
if (!(tmp & DPI_ENABLE))
continue;
tmp = I915_READ(MIPI_CTRL(port));
if ((tmp & BXT_PIPE_SELECT_MASK) != BXT_PIPE_SELECT(crtc->pipe))
continue;
pipe_config->cpu_transcoder = cpu_transcoder;
break;
}
return transcoder_is_dsi(pipe_config->cpu_transcoder);
}
static void haswell_get_ddi_port_state(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_shared_dpll *pll;
enum port port;
u32 tmp;
tmp = I915_READ(TRANS_DDI_FUNC_CTL(pipe_config->cpu_transcoder));
if (INTEL_GEN(dev_priv) >= 12)
port = TGL_TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
else
port = TRANS_DDI_FUNC_CTL_VAL_TO_PORT(tmp);
if (INTEL_GEN(dev_priv) >= 11)
icelake_get_ddi_pll(dev_priv, port, pipe_config);
else if (IS_CANNONLAKE(dev_priv))
cannonlake_get_ddi_pll(dev_priv, port, pipe_config);
else if (IS_GEN9_BC(dev_priv))
skylake_get_ddi_pll(dev_priv, port, pipe_config);
else if (IS_GEN9_LP(dev_priv))
bxt_get_ddi_pll(dev_priv, port, pipe_config);
else
haswell_get_ddi_pll(dev_priv, port, pipe_config);
pll = pipe_config->shared_dpll;
if (pll) {
WARN_ON(!pll->info->funcs->get_hw_state(dev_priv, pll,
&pipe_config->dpll_hw_state));
}
/*
* Haswell has only FDI/PCH transcoder A. It is which is connected to
* DDI E. So just check whether this pipe is wired to DDI E and whether
* the PCH transcoder is on.
*/
if (INTEL_GEN(dev_priv) < 9 &&
(port == PORT_E) && I915_READ(LPT_TRANSCONF) & TRANS_ENABLE) {
pipe_config->has_pch_encoder = true;
tmp = I915_READ(FDI_RX_CTL(PIPE_A));
pipe_config->fdi_lanes = ((FDI_DP_PORT_WIDTH_MASK & tmp) >>
FDI_DP_PORT_WIDTH_SHIFT) + 1;
ironlake_get_fdi_m_n_config(crtc, pipe_config);
}
}
static enum transcoder transcoder_master_readout(struct drm_i915_private *dev_priv,
enum transcoder cpu_transcoder)
{
u32 trans_port_sync, master_select;
trans_port_sync = I915_READ(TRANS_DDI_FUNC_CTL2(cpu_transcoder));
if ((trans_port_sync & PORT_SYNC_MODE_ENABLE) == 0)
return INVALID_TRANSCODER;
master_select = trans_port_sync &
PORT_SYNC_MODE_MASTER_SELECT_MASK;
if (master_select == 0)
return TRANSCODER_EDP;
else
return master_select - 1;
}
static void icelake_get_trans_port_sync_config(struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
u32 transcoders;
enum transcoder cpu_transcoder;
crtc_state->master_transcoder = transcoder_master_readout(dev_priv,
crtc_state->cpu_transcoder);
transcoders = BIT(TRANSCODER_A) |
BIT(TRANSCODER_B) |
BIT(TRANSCODER_C) |
BIT(TRANSCODER_D);
for_each_cpu_transcoder_masked(dev_priv, cpu_transcoder, transcoders) {
enum intel_display_power_domain power_domain;
intel_wakeref_t trans_wakeref;
power_domain = POWER_DOMAIN_TRANSCODER(cpu_transcoder);
trans_wakeref = intel_display_power_get_if_enabled(dev_priv,
power_domain);
if (!trans_wakeref)
continue;
if (transcoder_master_readout(dev_priv, cpu_transcoder) ==
crtc_state->cpu_transcoder)
crtc_state->sync_mode_slaves_mask |= BIT(cpu_transcoder);
intel_display_power_put(dev_priv, power_domain, trans_wakeref);
}
WARN_ON(crtc_state->master_transcoder != INVALID_TRANSCODER &&
crtc_state->sync_mode_slaves_mask);
}
static bool haswell_get_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
intel_wakeref_t wakerefs[POWER_DOMAIN_NUM], wf;
enum intel_display_power_domain power_domain;
u64 power_domain_mask;
bool active;
intel_crtc_init_scalers(crtc, pipe_config);
pipe_config->master_transcoder = INVALID_TRANSCODER;
power_domain = POWER_DOMAIN_PIPE(crtc->pipe);
wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wf)
return false;
wakerefs[power_domain] = wf;
power_domain_mask = BIT_ULL(power_domain);
pipe_config->shared_dpll = NULL;
active = hsw_get_transcoder_state(crtc, pipe_config,
&power_domain_mask, wakerefs);
if (IS_GEN9_LP(dev_priv) &&
bxt_get_dsi_transcoder_state(crtc, pipe_config,
&power_domain_mask, wakerefs)) {
WARN_ON(active);
active = true;
}
if (!active)
goto out;
if (!transcoder_is_dsi(pipe_config->cpu_transcoder) ||
INTEL_GEN(dev_priv) >= 11) {
haswell_get_ddi_port_state(crtc, pipe_config);
intel_get_pipe_timings(crtc, pipe_config);
}
intel_get_pipe_src_size(crtc, pipe_config);
if (IS_HASWELL(dev_priv)) {
u32 tmp = I915_READ(PIPECONF(pipe_config->cpu_transcoder));
if (tmp & PIPECONF_OUTPUT_COLORSPACE_YUV_HSW)
pipe_config->output_format = INTEL_OUTPUT_FORMAT_YCBCR444;
else
pipe_config->output_format = INTEL_OUTPUT_FORMAT_RGB;
} else {
pipe_config->output_format =
bdw_get_pipemisc_output_format(crtc);
/*
* Currently there is no interface defined to
* check user preference between RGB/YCBCR444
* or YCBCR420. So the only possible case for
* YCBCR444 usage is driving YCBCR420 output
* with LSPCON, when pipe is configured for
* YCBCR444 output and LSPCON takes care of
* downsampling it.
*/
pipe_config->lspcon_downsampling =
pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444;
}
pipe_config->gamma_mode = I915_READ(GAMMA_MODE(crtc->pipe));
pipe_config->csc_mode = I915_READ(PIPE_CSC_MODE(crtc->pipe));
if (INTEL_GEN(dev_priv) >= 9) {
u32 tmp = I915_READ(SKL_BOTTOM_COLOR(crtc->pipe));
if (tmp & SKL_BOTTOM_COLOR_GAMMA_ENABLE)
pipe_config->gamma_enable = true;
if (tmp & SKL_BOTTOM_COLOR_CSC_ENABLE)
pipe_config->csc_enable = true;
} else {
i9xx_get_pipe_color_config(pipe_config);
}
intel_color_get_config(pipe_config);
power_domain = POWER_DOMAIN_PIPE_PANEL_FITTER(crtc->pipe);
WARN_ON(power_domain_mask & BIT_ULL(power_domain));
wf = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (wf) {
wakerefs[power_domain] = wf;
power_domain_mask |= BIT_ULL(power_domain);
if (INTEL_GEN(dev_priv) >= 9)
skylake_get_pfit_config(crtc, pipe_config);
else
ironlake_get_pfit_config(crtc, pipe_config);
}
if (hsw_crtc_supports_ips(crtc)) {
if (IS_HASWELL(dev_priv))
pipe_config->ips_enabled = I915_READ(IPS_CTL) & IPS_ENABLE;
else {
/*
* We cannot readout IPS state on broadwell, set to
* true so we can set it to a defined state on first
* commit.
*/
pipe_config->ips_enabled = true;
}
}
if (pipe_config->cpu_transcoder != TRANSCODER_EDP &&
!transcoder_is_dsi(pipe_config->cpu_transcoder)) {
pipe_config->pixel_multiplier =
I915_READ(PIPE_MULT(pipe_config->cpu_transcoder)) + 1;
} else {
pipe_config->pixel_multiplier = 1;
}
if (INTEL_GEN(dev_priv) >= 11 &&
!transcoder_is_dsi(pipe_config->cpu_transcoder))
icelake_get_trans_port_sync_config(pipe_config);
out:
for_each_power_domain(power_domain, power_domain_mask)
intel_display_power_put(dev_priv,
power_domain, wakerefs[power_domain]);
return active;
}
static u32 intel_cursor_base(const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
const struct drm_i915_gem_object *obj = intel_fb_obj(fb);
u32 base;
if (INTEL_INFO(dev_priv)->display.cursor_needs_physical)
base = obj->phys_handle->busaddr;
else
base = intel_plane_ggtt_offset(plane_state);
return base + plane_state->color_plane[0].offset;
}
static u32 intel_cursor_position(const struct intel_plane_state *plane_state)
{
int x = plane_state->base.dst.x1;
int y = plane_state->base.dst.y1;
u32 pos = 0;
if (x < 0) {
pos |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
x = -x;
}
pos |= x << CURSOR_X_SHIFT;
if (y < 0) {
pos |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
y = -y;
}
pos |= y << CURSOR_Y_SHIFT;
return pos;
}
static bool intel_cursor_size_ok(const struct intel_plane_state *plane_state)
{
const struct drm_mode_config *config =
&plane_state->base.plane->dev->mode_config;
int width = drm_rect_width(&plane_state->base.dst);
int height = drm_rect_height(&plane_state->base.dst);
return width > 0 && width <= config->cursor_width &&
height > 0 && height <= config->cursor_height;
}
static int intel_cursor_check_surface(struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
unsigned int rotation = plane_state->base.rotation;
int src_x, src_y;
u32 offset;
int ret;
ret = intel_plane_compute_gtt(plane_state);
if (ret)
return ret;
if (!plane_state->base.visible)
return 0;
src_x = plane_state->base.src.x1 >> 16;
src_y = plane_state->base.src.y1 >> 16;
intel_add_fb_offsets(&src_x, &src_y, plane_state, 0);
offset = intel_plane_compute_aligned_offset(&src_x, &src_y,
plane_state, 0);
if (src_x != 0 || src_y != 0) {
DRM_DEBUG_KMS("Arbitrary cursor panning not supported\n");
return -EINVAL;
}
/*
* Put the final coordinates back so that the src
* coordinate checks will see the right values.
*/
drm_rect_translate_to(&plane_state->base.src,
src_x << 16, src_y << 16);
/* ILK+ do this automagically in hardware */
if (HAS_GMCH(dev_priv) && rotation & DRM_MODE_ROTATE_180) {
const struct drm_framebuffer *fb = plane_state->base.fb;
int src_w = drm_rect_width(&plane_state->base.src) >> 16;
int src_h = drm_rect_height(&plane_state->base.src) >> 16;
offset += (src_h * src_w - 1) * fb->format->cpp[0];
}
plane_state->color_plane[0].offset = offset;
plane_state->color_plane[0].x = src_x;
plane_state->color_plane[0].y = src_y;
return 0;
}
static int intel_check_cursor(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
int ret;
if (fb && fb->modifier != DRM_FORMAT_MOD_LINEAR) {
DRM_DEBUG_KMS("cursor cannot be tiled\n");
return -EINVAL;
}
ret = drm_atomic_helper_check_plane_state(&plane_state->base,
&crtc_state->base,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
true, true);
if (ret)
return ret;
/* Use the unclipped src/dst rectangles, which we program to hw */
plane_state->base.src = drm_plane_state_src(&plane_state->base);
plane_state->base.dst = drm_plane_state_dest(&plane_state->base);
ret = intel_cursor_check_surface(plane_state);
if (ret)
return ret;
if (!plane_state->base.visible)
return 0;
ret = intel_plane_check_src_coordinates(plane_state);
if (ret)
return ret;
return 0;
}
static unsigned int
i845_cursor_max_stride(struct intel_plane *plane,
u32 pixel_format, u64 modifier,
unsigned int rotation)
{
return 2048;
}
static u32 i845_cursor_ctl_crtc(const struct intel_crtc_state *crtc_state)
{
u32 cntl = 0;
if (crtc_state->gamma_enable)
cntl |= CURSOR_GAMMA_ENABLE;
return cntl;
}
static u32 i845_cursor_ctl(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
return CURSOR_ENABLE |
CURSOR_FORMAT_ARGB |
CURSOR_STRIDE(plane_state->color_plane[0].stride);
}
static bool i845_cursor_size_ok(const struct intel_plane_state *plane_state)
{
int width = drm_rect_width(&plane_state->base.dst);
/*
* 845g/865g are only limited by the width of their cursors,
* the height is arbitrary up to the precision of the register.
*/
return intel_cursor_size_ok(plane_state) && IS_ALIGNED(width, 64);
}
static int i845_check_cursor(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
const struct drm_framebuffer *fb = plane_state->base.fb;
int ret;
ret = intel_check_cursor(crtc_state, plane_state);
if (ret)
return ret;
/* if we want to turn off the cursor ignore width and height */
if (!fb)
return 0;
/* Check for which cursor types we support */
if (!i845_cursor_size_ok(plane_state)) {
DRM_DEBUG("Cursor dimension %dx%d not supported\n",
drm_rect_width(&plane_state->base.dst),
drm_rect_height(&plane_state->base.dst));
return -EINVAL;
}
WARN_ON(plane_state->base.visible &&
plane_state->color_plane[0].stride != fb->pitches[0]);
switch (fb->pitches[0]) {
case 256:
case 512:
case 1024:
case 2048:
break;
default:
DRM_DEBUG_KMS("Invalid cursor stride (%u)\n",
fb->pitches[0]);
return -EINVAL;
}
plane_state->ctl = i845_cursor_ctl(crtc_state, plane_state);
return 0;
}
static void i845_update_cursor(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
u32 cntl = 0, base = 0, pos = 0, size = 0;
unsigned long irqflags;
if (plane_state && plane_state->base.visible) {
unsigned int width = drm_rect_width(&plane_state->base.src);
unsigned int height = drm_rect_height(&plane_state->base.dst);
cntl = plane_state->ctl |
i845_cursor_ctl_crtc(crtc_state);
size = (height << 12) | width;
base = intel_cursor_base(plane_state);
pos = intel_cursor_position(plane_state);
}
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
/* On these chipsets we can only modify the base/size/stride
* whilst the cursor is disabled.
*/
if (plane->cursor.base != base ||
plane->cursor.size != size ||
plane->cursor.cntl != cntl) {
I915_WRITE_FW(CURCNTR(PIPE_A), 0);
I915_WRITE_FW(CURBASE(PIPE_A), base);
I915_WRITE_FW(CURSIZE, size);
I915_WRITE_FW(CURPOS(PIPE_A), pos);
I915_WRITE_FW(CURCNTR(PIPE_A), cntl);
plane->cursor.base = base;
plane->cursor.size = size;
plane->cursor.cntl = cntl;
} else {
I915_WRITE_FW(CURPOS(PIPE_A), pos);
}
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
}
static void i845_disable_cursor(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state)
{
i845_update_cursor(plane, crtc_state, NULL);
}
static bool i845_cursor_get_hw_state(struct intel_plane *plane,
enum pipe *pipe)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum intel_display_power_domain power_domain;
intel_wakeref_t wakeref;
bool ret;
power_domain = POWER_DOMAIN_PIPE(PIPE_A);
wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wakeref)
return false;
ret = I915_READ(CURCNTR(PIPE_A)) & CURSOR_ENABLE;
*pipe = PIPE_A;
intel_display_power_put(dev_priv, power_domain, wakeref);
return ret;
}
static unsigned int
i9xx_cursor_max_stride(struct intel_plane *plane,
u32 pixel_format, u64 modifier,
unsigned int rotation)
{
return plane->base.dev->mode_config.cursor_width * 4;
}
static u32 i9xx_cursor_ctl_crtc(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 cntl = 0;
if (INTEL_GEN(dev_priv) >= 11)
return cntl;
if (crtc_state->gamma_enable)
cntl = MCURSOR_GAMMA_ENABLE;
if (crtc_state->csc_enable)
cntl |= MCURSOR_PIPE_CSC_ENABLE;
if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
cntl |= MCURSOR_PIPE_SELECT(crtc->pipe);
return cntl;
}
static u32 i9xx_cursor_ctl(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
u32 cntl = 0;
if (IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv))
cntl |= MCURSOR_TRICKLE_FEED_DISABLE;
switch (drm_rect_width(&plane_state->base.dst)) {
case 64:
cntl |= MCURSOR_MODE_64_ARGB_AX;
break;
case 128:
cntl |= MCURSOR_MODE_128_ARGB_AX;
break;
case 256:
cntl |= MCURSOR_MODE_256_ARGB_AX;
break;
default:
MISSING_CASE(drm_rect_width(&plane_state->base.dst));
return 0;
}
if (plane_state->base.rotation & DRM_MODE_ROTATE_180)
cntl |= MCURSOR_ROTATE_180;
return cntl;
}
static bool i9xx_cursor_size_ok(const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv =
to_i915(plane_state->base.plane->dev);
int width = drm_rect_width(&plane_state->base.dst);
int height = drm_rect_height(&plane_state->base.dst);
if (!intel_cursor_size_ok(plane_state))
return false;
/* Cursor width is limited to a few power-of-two sizes */
switch (width) {
case 256:
case 128:
case 64:
break;
default:
return false;
}
/*
* IVB+ have CUR_FBC_CTL which allows an arbitrary cursor
* height from 8 lines up to the cursor width, when the
* cursor is not rotated. Everything else requires square
* cursors.
*/
if (HAS_CUR_FBC(dev_priv) &&
plane_state->base.rotation & DRM_MODE_ROTATE_0) {
if (height < 8 || height > width)
return false;
} else {
if (height != width)
return false;
}
return true;
}
static int i9xx_check_cursor(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
const struct drm_framebuffer *fb = plane_state->base.fb;
enum pipe pipe = plane->pipe;
int ret;
ret = intel_check_cursor(crtc_state, plane_state);
if (ret)
return ret;
/* if we want to turn off the cursor ignore width and height */
if (!fb)
return 0;
/* Check for which cursor types we support */
if (!i9xx_cursor_size_ok(plane_state)) {
DRM_DEBUG("Cursor dimension %dx%d not supported\n",
drm_rect_width(&plane_state->base.dst),
drm_rect_height(&plane_state->base.dst));
return -EINVAL;
}
WARN_ON(plane_state->base.visible &&
plane_state->color_plane[0].stride != fb->pitches[0]);
if (fb->pitches[0] !=
drm_rect_width(&plane_state->base.dst) * fb->format->cpp[0]) {
DRM_DEBUG_KMS("Invalid cursor stride (%u) (cursor width %d)\n",
fb->pitches[0],
drm_rect_width(&plane_state->base.dst));
return -EINVAL;
}
/*
* There's something wrong with the cursor on CHV pipe C.
* If it straddles the left edge of the screen then
* moving it away from the edge or disabling it often
* results in a pipe underrun, and often that can lead to
* dead pipe (constant underrun reported, and it scans
* out just a solid color). To recover from that, the
* display power well must be turned off and on again.
* Refuse the put the cursor into that compromised position.
*/
if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_C &&
plane_state->base.visible && plane_state->base.dst.x1 < 0) {
DRM_DEBUG_KMS("CHV cursor C not allowed to straddle the left screen edge\n");
return -EINVAL;
}
plane_state->ctl = i9xx_cursor_ctl(crtc_state, plane_state);
return 0;
}
static void i9xx_update_cursor(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum pipe pipe = plane->pipe;
u32 cntl = 0, base = 0, pos = 0, fbc_ctl = 0;
unsigned long irqflags;
if (plane_state && plane_state->base.visible) {
unsigned width = drm_rect_width(&plane_state->base.dst);
unsigned height = drm_rect_height(&plane_state->base.dst);
cntl = plane_state->ctl |
i9xx_cursor_ctl_crtc(crtc_state);
if (width != height)
fbc_ctl = CUR_FBC_CTL_EN | (height - 1);
base = intel_cursor_base(plane_state);
pos = intel_cursor_position(plane_state);
}
spin_lock_irqsave(&dev_priv->uncore.lock, irqflags);
/*
* On some platforms writing CURCNTR first will also
* cause CURPOS to be armed by the CURBASE write.
* Without the CURCNTR write the CURPOS write would
* arm itself. Thus we always update CURCNTR before
* CURPOS.
*
* On other platforms CURPOS always requires the
* CURBASE write to arm the update. Additonally
* a write to any of the cursor register will cancel
* an already armed cursor update. Thus leaving out
* the CURBASE write after CURPOS could lead to a
* cursor that doesn't appear to move, or even change
* shape. Thus we always write CURBASE.
*
* The other registers are armed by by the CURBASE write
* except when the plane is getting enabled at which time
* the CURCNTR write arms the update.
*/
if (INTEL_GEN(dev_priv) >= 9)
skl_write_cursor_wm(plane, crtc_state);
if (plane->cursor.base != base ||
plane->cursor.size != fbc_ctl ||
plane->cursor.cntl != cntl) {
if (HAS_CUR_FBC(dev_priv))
I915_WRITE_FW(CUR_FBC_CTL(pipe), fbc_ctl);
I915_WRITE_FW(CURCNTR(pipe), cntl);
I915_WRITE_FW(CURPOS(pipe), pos);
I915_WRITE_FW(CURBASE(pipe), base);
plane->cursor.base = base;
plane->cursor.size = fbc_ctl;
plane->cursor.cntl = cntl;
} else {
I915_WRITE_FW(CURPOS(pipe), pos);
I915_WRITE_FW(CURBASE(pipe), base);
}
spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags);
}
static void i9xx_disable_cursor(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state)
{
i9xx_update_cursor(plane, crtc_state, NULL);
}
static bool i9xx_cursor_get_hw_state(struct intel_plane *plane,
enum pipe *pipe)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
enum intel_display_power_domain power_domain;
intel_wakeref_t wakeref;
bool ret;
u32 val;
/*
* Not 100% correct for planes that can move between pipes,
* but that's only the case for gen2-3 which don't have any
* display power wells.
*/
power_domain = POWER_DOMAIN_PIPE(plane->pipe);
wakeref = intel_display_power_get_if_enabled(dev_priv, power_domain);
if (!wakeref)
return false;
val = I915_READ(CURCNTR(plane->pipe));
ret = val & MCURSOR_MODE;
if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
*pipe = plane->pipe;
else
*pipe = (val & MCURSOR_PIPE_SELECT_MASK) >>
MCURSOR_PIPE_SELECT_SHIFT;
intel_display_power_put(dev_priv, power_domain, wakeref);
return ret;
}
/* VESA 640x480x72Hz mode to set on the pipe */
static const struct drm_display_mode load_detect_mode = {
DRM_MODE("640x480", DRM_MODE_TYPE_DEFAULT, 31500, 640, 664,
704, 832, 0, 480, 489, 491, 520, 0, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC),
};
struct drm_framebuffer *
intel_framebuffer_create(struct drm_i915_gem_object *obj,
struct drm_mode_fb_cmd2 *mode_cmd)
{
struct intel_framebuffer *intel_fb;
int ret;
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb)
return ERR_PTR(-ENOMEM);
ret = intel_framebuffer_init(intel_fb, obj, mode_cmd);
if (ret)
goto err;
return &intel_fb->base;
err:
kfree(intel_fb);
return ERR_PTR(ret);
}
static int intel_modeset_disable_planes(struct drm_atomic_state *state,
struct drm_crtc *crtc)
{
struct drm_plane *plane;
struct drm_plane_state *plane_state;
int ret, i;
ret = drm_atomic_add_affected_planes(state, crtc);
if (ret)
return ret;
for_each_new_plane_in_state(state, plane, plane_state, i) {
if (plane_state->crtc != crtc)
continue;
ret = drm_atomic_set_crtc_for_plane(plane_state, NULL);
if (ret)
return ret;
drm_atomic_set_fb_for_plane(plane_state, NULL);
}
return 0;
}
int intel_get_load_detect_pipe(struct drm_connector *connector,
const struct drm_display_mode *mode,
struct intel_load_detect_pipe *old,
struct drm_modeset_acquire_ctx *ctx)
{
struct intel_crtc *intel_crtc;
struct intel_encoder *intel_encoder =
intel_attached_encoder(connector);
struct drm_crtc *possible_crtc;
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_crtc *crtc = NULL;
struct drm_device *dev = encoder->dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_mode_config *config = &dev->mode_config;
struct drm_atomic_state *state = NULL, *restore_state = NULL;
struct drm_connector_state *connector_state;
struct intel_crtc_state *crtc_state;
int ret, i = -1;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
connector->base.id, connector->name,
encoder->base.id, encoder->name);
old->restore_state = NULL;
WARN_ON(!drm_modeset_is_locked(&config->connection_mutex));
/*
* Algorithm gets a little messy:
*
* - if the connector already has an assigned crtc, use it (but make
* sure it's on first)
*
* - try to find the first unused crtc that can drive this connector,
* and use that if we find one
*/
/* See if we already have a CRTC for this connector */
if (connector->state->crtc) {
crtc = connector->state->crtc;
ret = drm_modeset_lock(&crtc->mutex, ctx);
if (ret)
goto fail;
/* Make sure the crtc and connector are running */
goto found;
}
/* Find an unused one (if possible) */
for_each_crtc(dev, possible_crtc) {
i++;
if (!(encoder->possible_crtcs & (1 << i)))
continue;
ret = drm_modeset_lock(&possible_crtc->mutex, ctx);
if (ret)
goto fail;
if (possible_crtc->state->enable) {
drm_modeset_unlock(&possible_crtc->mutex);
continue;
}
crtc = possible_crtc;
break;
}
/*
* If we didn't find an unused CRTC, don't use any.
*/
if (!crtc) {
DRM_DEBUG_KMS("no pipe available for load-detect\n");
ret = -ENODEV;
goto fail;
}
found:
intel_crtc = to_intel_crtc(crtc);
state = drm_atomic_state_alloc(dev);
restore_state = drm_atomic_state_alloc(dev);
if (!state || !restore_state) {
ret = -ENOMEM;
goto fail;
}
state->acquire_ctx = ctx;
restore_state->acquire_ctx = ctx;
connector_state = drm_atomic_get_connector_state(state, connector);
if (IS_ERR(connector_state)) {
ret = PTR_ERR(connector_state);
goto fail;
}
ret = drm_atomic_set_crtc_for_connector(connector_state, crtc);
if (ret)
goto fail;
crtc_state = intel_atomic_get_crtc_state(state, intel_crtc);
if (IS_ERR(crtc_state)) {
ret = PTR_ERR(crtc_state);
goto fail;
}
crtc_state->base.active = crtc_state->base.enable = true;
if (!mode)
mode = &load_detect_mode;
ret = drm_atomic_set_mode_for_crtc(&crtc_state->base, mode);
if (ret)
goto fail;
ret = intel_modeset_disable_planes(state, crtc);
if (ret)
goto fail;
ret = PTR_ERR_OR_ZERO(drm_atomic_get_connector_state(restore_state, connector));
if (!ret)
ret = PTR_ERR_OR_ZERO(drm_atomic_get_crtc_state(restore_state, crtc));
if (!ret)
ret = drm_atomic_add_affected_planes(restore_state, crtc);
if (ret) {
DRM_DEBUG_KMS("Failed to create a copy of old state to restore: %i\n", ret);
goto fail;
}
ret = drm_atomic_commit(state);
if (ret) {
DRM_DEBUG_KMS("failed to set mode on load-detect pipe\n");
goto fail;
}
old->restore_state = restore_state;
drm_atomic_state_put(state);
/* let the connector get through one full cycle before testing */
intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
return true;
fail:
if (state) {
drm_atomic_state_put(state);
state = NULL;
}
if (restore_state) {
drm_atomic_state_put(restore_state);
restore_state = NULL;
}
if (ret == -EDEADLK)
return ret;
return false;
}
void intel_release_load_detect_pipe(struct drm_connector *connector,
struct intel_load_detect_pipe *old,
struct drm_modeset_acquire_ctx *ctx)
{
struct intel_encoder *intel_encoder =
intel_attached_encoder(connector);
struct drm_encoder *encoder = &intel_encoder->base;
struct drm_atomic_state *state = old->restore_state;
int ret;
DRM_DEBUG_KMS("[CONNECTOR:%d:%s], [ENCODER:%d:%s]\n",
connector->base.id, connector->name,
encoder->base.id, encoder->name);
if (!state)
return;
ret = drm_atomic_helper_commit_duplicated_state(state, ctx);
if (ret)
DRM_DEBUG_KMS("Couldn't release load detect pipe: %i\n", ret);
drm_atomic_state_put(state);
}
static int i9xx_pll_refclk(struct drm_device *dev,
const struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(dev);
u32 dpll = pipe_config->dpll_hw_state.dpll;
if ((dpll & PLL_REF_INPUT_MASK) == PLLB_REF_INPUT_SPREADSPECTRUMIN)
return dev_priv->vbt.lvds_ssc_freq;
else if (HAS_PCH_SPLIT(dev_priv))
return 120000;
else if (!IS_GEN(dev_priv, 2))
return 96000;
else
return 48000;
}
/* Returns the clock of the currently programmed mode of the given pipe. */
static void i9xx_crtc_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
u32 dpll = pipe_config->dpll_hw_state.dpll;
u32 fp;
struct dpll clock;
int port_clock;
int refclk = i9xx_pll_refclk(dev, pipe_config);
if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
fp = pipe_config->dpll_hw_state.fp0;
else
fp = pipe_config->dpll_hw_state.fp1;
clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
if (IS_PINEVIEW(dev_priv)) {
clock.n = ffs((fp & FP_N_PINEVIEW_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
clock.m2 = (fp & FP_M2_PINEVIEW_DIV_MASK) >> FP_M2_DIV_SHIFT;
} else {
clock.n = (fp & FP_N_DIV_MASK) >> FP_N_DIV_SHIFT;
clock.m2 = (fp & FP_M2_DIV_MASK) >> FP_M2_DIV_SHIFT;
}
if (!IS_GEN(dev_priv, 2)) {
if (IS_PINEVIEW(dev_priv))
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_PINEVIEW) >>
DPLL_FPA01_P1_POST_DIV_SHIFT_PINEVIEW);
else
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK) >>
DPLL_FPA01_P1_POST_DIV_SHIFT);
switch (dpll & DPLL_MODE_MASK) {
case DPLLB_MODE_DAC_SERIAL:
clock.p2 = dpll & DPLL_DAC_SERIAL_P2_CLOCK_DIV_5 ?
5 : 10;
break;
case DPLLB_MODE_LVDS:
clock.p2 = dpll & DPLLB_LVDS_P2_CLOCK_DIV_7 ?
7 : 14;
break;
default:
DRM_DEBUG_KMS("Unknown DPLL mode %08x in programmed "
"mode\n", (int)(dpll & DPLL_MODE_MASK));
return;
}
if (IS_PINEVIEW(dev_priv))
port_clock = pnv_calc_dpll_params(refclk, &clock);
else
port_clock = i9xx_calc_dpll_params(refclk, &clock);
} else {
u32 lvds = IS_I830(dev_priv) ? 0 : I915_READ(LVDS);
bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
if (is_lvds) {
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830_LVDS) >>
DPLL_FPA01_P1_POST_DIV_SHIFT);
if (lvds & LVDS_CLKB_POWER_UP)
clock.p2 = 7;
else
clock.p2 = 14;
} else {
if (dpll & PLL_P1_DIVIDE_BY_TWO)
clock.p1 = 2;
else {
clock.p1 = ((dpll & DPLL_FPA01_P1_POST_DIV_MASK_I830) >>
DPLL_FPA01_P1_POST_DIV_SHIFT) + 2;
}
if (dpll & PLL_P2_DIVIDE_BY_4)
clock.p2 = 4;
else
clock.p2 = 2;
}
port_clock = i9xx_calc_dpll_params(refclk, &clock);
}
/*
* This value includes pixel_multiplier. We will use
* port_clock to compute adjusted_mode.crtc_clock in the
* encoder's get_config() function.
*/
pipe_config->port_clock = port_clock;
}
int intel_dotclock_calculate(int link_freq,
const struct intel_link_m_n *m_n)
{
/*
* The calculation for the data clock is:
* pixel_clock = ((m/n)*(link_clock * nr_lanes))/bpp
* But we want to avoid losing precison if possible, so:
* pixel_clock = ((m * link_clock * nr_lanes)/(n*bpp))
*
* and the link clock is simpler:
* link_clock = (m * link_clock) / n
*/
if (!m_n->link_n)
return 0;
return div_u64(mul_u32_u32(m_n->link_m, link_freq), m_n->link_n);
}
static void ironlake_pch_clock_get(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
/* read out port_clock from the DPLL */
i9xx_crtc_clock_get(crtc, pipe_config);
/*
* In case there is an active pipe without active ports,
* we may need some idea for the dotclock anyway.
* Calculate one based on the FDI configuration.
*/
pipe_config->base.adjusted_mode.crtc_clock =
intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
&pipe_config->fdi_m_n);
}
/* Returns the currently programmed mode of the given encoder. */
struct drm_display_mode *
intel_encoder_current_mode(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_crtc_state *crtc_state;
struct drm_display_mode *mode;
struct intel_crtc *crtc;
enum pipe pipe;
if (!encoder->get_hw_state(encoder, &pipe))
return NULL;
crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
mode = kzalloc(sizeof(*mode), GFP_KERNEL);
if (!mode)
return NULL;
crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
if (!crtc_state) {
kfree(mode);
return NULL;
}
crtc_state->base.crtc = &crtc->base;
if (!dev_priv->display.get_pipe_config(crtc, crtc_state)) {
kfree(crtc_state);
kfree(mode);
return NULL;
}
encoder->get_config(encoder, crtc_state);
intel_mode_from_pipe_config(mode, crtc_state);
kfree(crtc_state);
return mode;
}
static void intel_crtc_destroy(struct drm_crtc *crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
drm_crtc_cleanup(crtc);
kfree(intel_crtc);
}
/**
* intel_wm_need_update - Check whether watermarks need updating
* @cur: current plane state
* @new: new plane state
*
* Check current plane state versus the new one to determine whether
* watermarks need to be recalculated.
*
* Returns true or false.
*/
static bool intel_wm_need_update(const struct intel_plane_state *cur,
struct intel_plane_state *new)
{
/* Update watermarks on tiling or size changes. */
if (new->base.visible != cur->base.visible)
return true;
if (!cur->base.fb || !new->base.fb)
return false;
if (cur->base.fb->modifier != new->base.fb->modifier ||
cur->base.rotation != new->base.rotation ||
drm_rect_width(&new->base.src) != drm_rect_width(&cur->base.src) ||
drm_rect_height(&new->base.src) != drm_rect_height(&cur->base.src) ||
drm_rect_width(&new->base.dst) != drm_rect_width(&cur->base.dst) ||
drm_rect_height(&new->base.dst) != drm_rect_height(&cur->base.dst))
return true;
return false;
}
static bool needs_scaling(const struct intel_plane_state *state)
{
int src_w = drm_rect_width(&state->base.src) >> 16;
int src_h = drm_rect_height(&state->base.src) >> 16;
int dst_w = drm_rect_width(&state->base.dst);
int dst_h = drm_rect_height(&state->base.dst);
return (src_w != dst_w || src_h != dst_h);
}
int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *crtc_state,
const struct intel_plane_state *old_plane_state,
struct intel_plane_state *plane_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
bool mode_changed = needs_modeset(crtc_state);
bool was_crtc_enabled = old_crtc_state->base.active;
bool is_crtc_enabled = crtc_state->base.active;
bool turn_off, turn_on, visible, was_visible;
int ret;
if (INTEL_GEN(dev_priv) >= 9 && plane->id != PLANE_CURSOR) {
ret = skl_update_scaler_plane(crtc_state, plane_state);
if (ret)
return ret;
}
was_visible = old_plane_state->base.visible;
visible = plane_state->base.visible;
if (!was_crtc_enabled && WARN_ON(was_visible))
was_visible = false;
/*
* Visibility is calculated as if the crtc was on, but
* after scaler setup everything depends on it being off
* when the crtc isn't active.
*
* FIXME this is wrong for watermarks. Watermarks should also
* be computed as if the pipe would be active. Perhaps move
* per-plane wm computation to the .check_plane() hook, and
* only combine the results from all planes in the current place?
*/
if (!is_crtc_enabled) {
plane_state->base.visible = visible = false;
crtc_state->active_planes &= ~BIT(plane->id);
crtc_state->data_rate[plane->id] = 0;
crtc_state->min_cdclk[plane->id] = 0;
}
if (!was_visible && !visible)
return 0;
turn_off = was_visible && (!visible || mode_changed);
turn_on = visible && (!was_visible || mode_changed);
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] with [PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms %i\n",
crtc->base.base.id, crtc->base.name,
plane->base.base.id, plane->base.name,
was_visible, visible,
turn_off, turn_on, mode_changed);
if (turn_on) {
if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
crtc_state->update_wm_pre = true;
/* must disable cxsr around plane enable/disable */
if (plane->id != PLANE_CURSOR)
crtc_state->disable_cxsr = true;
} else if (turn_off) {
if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv))
crtc_state->update_wm_post = true;
/* must disable cxsr around plane enable/disable */
if (plane->id != PLANE_CURSOR)
crtc_state->disable_cxsr = true;
} else if (intel_wm_need_update(old_plane_state, plane_state)) {
if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv)) {
/* FIXME bollocks */
crtc_state->update_wm_pre = true;
crtc_state->update_wm_post = true;
}
}
if (visible || was_visible)
crtc_state->fb_bits |= plane->frontbuffer_bit;
/*
* ILK/SNB DVSACNTR/Sprite Enable
* IVB SPR_CTL/Sprite Enable
* "When in Self Refresh Big FIFO mode, a write to enable the
* plane will be internally buffered and delayed while Big FIFO
* mode is exiting."
*
* Which means that enabling the sprite can take an extra frame
* when we start in big FIFO mode (LP1+). Thus we need to drop
* down to LP0 and wait for vblank in order to make sure the
* sprite gets enabled on the next vblank after the register write.
* Doing otherwise would risk enabling the sprite one frame after
* we've already signalled flip completion. We can resume LP1+
* once the sprite has been enabled.
*
*
* WaCxSRDisabledForSpriteScaling:ivb
* IVB SPR_SCALE/Scaling Enable
* "Low Power watermarks must be disabled for at least one
* frame before enabling sprite scaling, and kept disabled
* until sprite scaling is disabled."
*
* ILK/SNB DVSASCALE/Scaling Enable
* "When in Self Refresh Big FIFO mode, scaling enable will be
* masked off while Big FIFO mode is exiting."
*
* Despite the w/a only being listed for IVB we assume that
* the ILK/SNB note has similar ramifications, hence we apply
* the w/a on all three platforms.
*
* With experimental results seems this is needed also for primary
* plane, not only sprite plane.
*/
if (plane->id != PLANE_CURSOR &&
(IS_GEN_RANGE(dev_priv, 5, 6) ||
IS_IVYBRIDGE(dev_priv)) &&
(turn_on || (!needs_scaling(old_plane_state) &&
needs_scaling(plane_state))))
crtc_state->disable_lp_wm = true;
return 0;
}
static bool encoders_cloneable(const struct intel_encoder *a,
const struct intel_encoder *b)
{
/* masks could be asymmetric, so check both ways */
return a == b || (a->cloneable & (1 << b->type) &&
b->cloneable & (1 << a->type));
}
static bool check_single_encoder_cloning(struct drm_atomic_state *state,
struct intel_crtc *crtc,
struct intel_encoder *encoder)
{
struct intel_encoder *source_encoder;
struct drm_connector *connector;
struct drm_connector_state *connector_state;
int i;
for_each_new_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != &crtc->base)
continue;
source_encoder =
to_intel_encoder(connector_state->best_encoder);
if (!encoders_cloneable(encoder, source_encoder))
return false;
}
return true;
}
static int icl_add_linked_planes(struct intel_atomic_state *state)
{
struct intel_plane *plane, *linked;
struct intel_plane_state *plane_state, *linked_plane_state;
int i;
for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
linked = plane_state->planar_linked_plane;
if (!linked)
continue;
linked_plane_state = intel_atomic_get_plane_state(state, linked);
if (IS_ERR(linked_plane_state))
return PTR_ERR(linked_plane_state);
WARN_ON(linked_plane_state->planar_linked_plane != plane);
WARN_ON(linked_plane_state->planar_slave == plane_state->planar_slave);
}
return 0;
}
static int icl_check_nv12_planes(struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->base.state);
struct intel_plane *plane, *linked;
struct intel_plane_state *plane_state;
int i;
if (INTEL_GEN(dev_priv) < 11)
return 0;
/*
* Destroy all old plane links and make the slave plane invisible
* in the crtc_state->active_planes mask.
*/
for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
if (plane->pipe != crtc->pipe || !plane_state->planar_linked_plane)
continue;
plane_state->planar_linked_plane = NULL;
if (plane_state->planar_slave && !plane_state->base.visible) {
crtc_state->active_planes &= ~BIT(plane->id);
crtc_state->update_planes |= BIT(plane->id);
}
plane_state->planar_slave = false;
}
if (!crtc_state->nv12_planes)
return 0;
for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
struct intel_plane_state *linked_state = NULL;
if (plane->pipe != crtc->pipe ||
!(crtc_state->nv12_planes & BIT(plane->id)))
continue;
for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, linked) {
if (!icl_is_nv12_y_plane(linked->id))
continue;
if (crtc_state->active_planes & BIT(linked->id))
continue;
linked_state = intel_atomic_get_plane_state(state, linked);
if (IS_ERR(linked_state))
return PTR_ERR(linked_state);
break;
}
if (!linked_state) {
DRM_DEBUG_KMS("Need %d free Y planes for planar YUV\n",
hweight8(crtc_state->nv12_planes));
return -EINVAL;
}
plane_state->planar_linked_plane = linked;
linked_state->planar_slave = true;
linked_state->planar_linked_plane = plane;
crtc_state->active_planes |= BIT(linked->id);
crtc_state->update_planes |= BIT(linked->id);
DRM_DEBUG_KMS("Using %s as Y plane for %s\n", linked->base.name, plane->base.name);
}
return 0;
}
static bool c8_planes_changed(const struct intel_crtc_state *new_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
struct intel_atomic_state *state =
to_intel_atomic_state(new_crtc_state->base.state);
const struct intel_crtc_state *old_crtc_state =
intel_atomic_get_old_crtc_state(state, crtc);
return !old_crtc_state->c8_planes != !new_crtc_state->c8_planes;
}
static int icl_add_sync_mode_crtcs(struct intel_crtc_state *crtc_state)
{
struct drm_crtc *crtc = crtc_state->base.crtc;
struct intel_atomic_state *state = to_intel_atomic_state(crtc_state->base.state);
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
struct drm_connector *master_connector, *connector;
struct drm_connector_state *connector_state;
struct drm_connector_list_iter conn_iter;
struct drm_crtc *master_crtc = NULL;
struct drm_crtc_state *master_crtc_state;
struct intel_crtc_state *master_pipe_config;
int i, tile_group_id;
if (INTEL_GEN(dev_priv) < 11)
return 0;
/*
* In case of tiled displays there could be one or more slaves but there is
* only one master. Lets make the CRTC used by the connector corresponding
* to the last horizonal and last vertical tile a master/genlock CRTC.
* All the other CRTCs corresponding to other tiles of the same Tile group
* are the slave CRTCs and hold a pointer to their genlock CRTC.
*/
for_each_new_connector_in_state(&state->base, connector, connector_state, i) {
if (connector_state->crtc != crtc)
continue;
if (!connector->has_tile)
continue;
if (crtc_state->base.mode.hdisplay != connector->tile_h_size ||
crtc_state->base.mode.vdisplay != connector->tile_v_size)
return 0;
if (connector->tile_h_loc == connector->num_h_tile - 1 &&
connector->tile_v_loc == connector->num_v_tile - 1)
continue;
crtc_state->sync_mode_slaves_mask = 0;
tile_group_id = connector->tile_group->id;
drm_connector_list_iter_begin(&dev_priv->drm, &conn_iter);
drm_for_each_connector_iter(master_connector, &conn_iter) {
struct drm_connector_state *master_conn_state = NULL;
if (!master_connector->has_tile)
continue;
if (master_connector->tile_h_loc != master_connector->num_h_tile - 1 ||
master_connector->tile_v_loc != master_connector->num_v_tile - 1)
continue;
if (master_connector->tile_group->id != tile_group_id)
continue;
master_conn_state = drm_atomic_get_connector_state(&state->base,
master_connector);
if (IS_ERR(master_conn_state)) {
drm_connector_list_iter_end(&conn_iter);
return PTR_ERR(master_conn_state);
}
if (master_conn_state->crtc) {
master_crtc = master_conn_state->crtc;
break;
}
}
drm_connector_list_iter_end(&conn_iter);
if (!master_crtc) {
DRM_DEBUG_KMS("Could not find Master CRTC for Slave CRTC %d\n",
connector_state->crtc->base.id);
return -EINVAL;
}
master_crtc_state = drm_atomic_get_crtc_state(&state->base,
master_crtc);
if (IS_ERR(master_crtc_state))
return PTR_ERR(master_crtc_state);
master_pipe_config = to_intel_crtc_state(master_crtc_state);
crtc_state->master_transcoder = master_pipe_config->cpu_transcoder;
master_pipe_config->sync_mode_slaves_mask |=
BIT(crtc_state->cpu_transcoder);
DRM_DEBUG_KMS("Master Transcoder = %s added for Slave CRTC = %d, slave transcoder bitmask = %d\n",
transcoder_name(crtc_state->master_transcoder),
crtc_state->base.crtc->base.id,
master_pipe_config->sync_mode_slaves_mask);
}
return 0;
}
static int intel_crtc_atomic_check(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
bool mode_changed = needs_modeset(crtc_state);
int ret;
if (INTEL_GEN(dev_priv) < 5 && !IS_G4X(dev_priv) &&
mode_changed && !crtc_state->base.active)
crtc_state->update_wm_post = true;
if (mode_changed && crtc_state->base.enable &&
dev_priv->display.crtc_compute_clock &&
!WARN_ON(crtc_state->shared_dpll)) {
ret = dev_priv->display.crtc_compute_clock(crtc, crtc_state);
if (ret)
return ret;
}
/*
* May need to update pipe gamma enable bits
* when C8 planes are getting enabled/disabled.
*/
if (c8_planes_changed(crtc_state))
crtc_state->base.color_mgmt_changed = true;
if (mode_changed || crtc_state->update_pipe ||
crtc_state->base.color_mgmt_changed) {
ret = intel_color_check(crtc_state);
if (ret)
return ret;
}
ret = 0;
if (dev_priv->display.compute_pipe_wm) {
ret = dev_priv->display.compute_pipe_wm(crtc_state);
if (ret) {
DRM_DEBUG_KMS("Target pipe watermarks are invalid\n");
return ret;
}
}
if (dev_priv->display.compute_intermediate_wm) {
if (WARN_ON(!dev_priv->display.compute_pipe_wm))
return 0;
/*
* Calculate 'intermediate' watermarks that satisfy both the
* old state and the new state. We can program these
* immediately.
*/
ret = dev_priv->display.compute_intermediate_wm(crtc_state);
if (ret) {
DRM_DEBUG_KMS("No valid intermediate pipe watermarks are possible\n");
return ret;
}
}
if (INTEL_GEN(dev_priv) >= 9) {
if (mode_changed || crtc_state->update_pipe)
ret = skl_update_scaler_crtc(crtc_state);
if (!ret)
ret = intel_atomic_setup_scalers(dev_priv, crtc,
crtc_state);
}
if (HAS_IPS(dev_priv))
crtc_state->ips_enabled = hsw_compute_ips_config(crtc_state);
return ret;
}
static void intel_modeset_update_connector_atomic_state(struct drm_device *dev)
{
struct intel_connector *connector;
struct drm_connector_list_iter conn_iter;
drm_connector_list_iter_begin(dev, &conn_iter);
for_each_intel_connector_iter(connector, &conn_iter) {
if (connector->base.state->crtc)
drm_connector_put(&connector->base);
if (connector->base.encoder) {
connector->base.state->best_encoder =
connector->base.encoder;
connector->base.state->crtc =
connector->base.encoder->crtc;
drm_connector_get(&connector->base);
} else {
connector->base.state->best_encoder = NULL;
connector->base.state->crtc = NULL;
}
}
drm_connector_list_iter_end(&conn_iter);
}
static int
compute_sink_pipe_bpp(const struct drm_connector_state *conn_state,
struct intel_crtc_state *pipe_config)
{
struct drm_connector *connector = conn_state->connector;
const struct drm_display_info *info = &connector->display_info;
int bpp;
switch (conn_state->max_bpc) {
case 6 ... 7:
bpp = 6 * 3;
break;
case 8 ... 9:
bpp = 8 * 3;
break;
case 10 ... 11:
bpp = 10 * 3;
break;
case 12:
bpp = 12 * 3;
break;
default:
return -EINVAL;
}
if (bpp < pipe_config->pipe_bpp) {
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] Limiting display bpp to %d instead of "
"EDID bpp %d, requested bpp %d, max platform bpp %d\n",
connector->base.id, connector->name,
bpp, 3 * info->bpc, 3 * conn_state->max_requested_bpc,
pipe_config->pipe_bpp);
pipe_config->pipe_bpp = bpp;
}
return 0;
}
static int
compute_baseline_pipe_bpp(struct intel_crtc *crtc,
struct intel_crtc_state *pipe_config)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct drm_atomic_state *state = pipe_config->base.state;
struct drm_connector *connector;
struct drm_connector_state *connector_state;
int bpp, i;
if ((IS_G4X(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
IS_CHERRYVIEW(dev_priv)))
bpp = 10*3;
else if (INTEL_GEN(dev_priv) >= 5)
bpp = 12*3;
else
bpp = 8*3;
pipe_config->pipe_bpp = bpp;
/* Clamp display bpp to connector max bpp */
for_each_new_connector_in_state(state, connector, connector_state, i) {
int ret;
if (connector_state->crtc != &crtc->base)
continue;
ret = compute_sink_pipe_bpp(connector_state, pipe_config);
if (ret)
return ret;
}
return 0;
}
static void intel_dump_crtc_timings(const struct drm_display_mode *mode)
{
DRM_DEBUG_KMS("crtc timings: %d %d %d %d %d %d %d %d %d, "
"type: 0x%x flags: 0x%x\n",
mode->crtc_clock,
mode->crtc_hdisplay, mode->crtc_hsync_start,
mode->crtc_hsync_end, mode->crtc_htotal,
mode->crtc_vdisplay, mode->crtc_vsync_start,
mode->crtc_vsync_end, mode->crtc_vtotal,
mode->type, mode->flags);
}
static inline void
intel_dump_m_n_config(const struct intel_crtc_state *pipe_config,
const char *id, unsigned int lane_count,
const struct intel_link_m_n *m_n)
{
DRM_DEBUG_KMS("%s: lanes: %i; gmch_m: %u, gmch_n: %u, link_m: %u, link_n: %u, tu: %u\n",
id, lane_count,
m_n->gmch_m, m_n->gmch_n,
m_n->link_m, m_n->link_n, m_n->tu);
}
static void
intel_dump_infoframe(struct drm_i915_private *dev_priv,
const union hdmi_infoframe *frame)
{
if ((drm_debug & DRM_UT_KMS) == 0)
return;
hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, frame);
}
#define OUTPUT_TYPE(x) [INTEL_OUTPUT_ ## x] = #x
static const char * const output_type_str[] = {
OUTPUT_TYPE(UNUSED),
OUTPUT_TYPE(ANALOG),
OUTPUT_TYPE(DVO),
OUTPUT_TYPE(SDVO),
OUTPUT_TYPE(LVDS),
OUTPUT_TYPE(TVOUT),
OUTPUT_TYPE(HDMI),
OUTPUT_TYPE(DP),
OUTPUT_TYPE(EDP),
OUTPUT_TYPE(DSI),
OUTPUT_TYPE(DDI),
OUTPUT_TYPE(DP_MST),
};
#undef OUTPUT_TYPE
static void snprintf_output_types(char *buf, size_t len,
unsigned int output_types)
{
char *str = buf;
int i;
str[0] = '\0';
for (i = 0; i < ARRAY_SIZE(output_type_str); i++) {
int r;
if ((output_types & BIT(i)) == 0)
continue;
r = snprintf(str, len, "%s%s",
str != buf ? "," : "", output_type_str[i]);
if (r >= len)
break;
str += r;
len -= r;
output_types &= ~BIT(i);
}
WARN_ON_ONCE(output_types != 0);
}
static const char * const output_format_str[] = {
[INTEL_OUTPUT_FORMAT_INVALID] = "Invalid",
[INTEL_OUTPUT_FORMAT_RGB] = "RGB",
[INTEL_OUTPUT_FORMAT_YCBCR420] = "YCBCR4:2:0",
[INTEL_OUTPUT_FORMAT_YCBCR444] = "YCBCR4:4:4",
};
static const char *output_formats(enum intel_output_format format)
{
if (format >= ARRAY_SIZE(output_format_str))
format = INTEL_OUTPUT_FORMAT_INVALID;
return output_format_str[format];
}
static void intel_dump_plane_state(const struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
const struct drm_framebuffer *fb = plane_state->base.fb;
struct drm_format_name_buf format_name;
if (!fb) {
DRM_DEBUG_KMS("[PLANE:%d:%s] fb: [NOFB], visible: %s\n",
plane->base.base.id, plane->base.name,
yesno(plane_state->base.visible));
return;
}
DRM_DEBUG_KMS("[PLANE:%d:%s] fb: [FB:%d] %ux%u format = %s, visible: %s\n",
plane->base.base.id, plane->base.name,
fb->base.id, fb->width, fb->height,
drm_get_format_name(fb->format->format, &format_name),
yesno(plane_state->base.visible));
DRM_DEBUG_KMS("\trotation: 0x%x, scaler: %d\n",
plane_state->base.rotation, plane_state->scaler_id);
if (plane_state->base.visible)
DRM_DEBUG_KMS("\tsrc: " DRM_RECT_FP_FMT " dst: " DRM_RECT_FMT "\n",
DRM_RECT_FP_ARG(&plane_state->base.src),
DRM_RECT_ARG(&plane_state->base.dst));
}
static void intel_dump_pipe_config(const struct intel_crtc_state *pipe_config,
struct intel_atomic_state *state,
const char *context)
{
struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
const struct intel_plane_state *plane_state;
struct intel_plane *plane;
char buf[64];
int i;
DRM_DEBUG_KMS("[CRTC:%d:%s] enable: %s %s\n",
crtc->base.base.id, crtc->base.name,
yesno(pipe_config->base.enable), context);
if (!pipe_config->base.enable)
goto dump_planes;
snprintf_output_types(buf, sizeof(buf), pipe_config->output_types);
DRM_DEBUG_KMS("active: %s, output_types: %s (0x%x), output format: %s\n",
yesno(pipe_config->base.active),
buf, pipe_config->output_types,
output_formats(pipe_config->output_format));
DRM_DEBUG_KMS("cpu_transcoder: %s, pipe bpp: %i, dithering: %i\n",
transcoder_name(pipe_config->cpu_transcoder),
pipe_config->pipe_bpp, pipe_config->dither);
if (pipe_config->has_pch_encoder)
intel_dump_m_n_config(pipe_config, "fdi",
pipe_config->fdi_lanes,
&pipe_config->fdi_m_n);
if (intel_crtc_has_dp_encoder(pipe_config)) {
intel_dump_m_n_config(pipe_config, "dp m_n",
pipe_config->lane_count, &pipe_config->dp_m_n);
if (pipe_config->has_drrs)
intel_dump_m_n_config(pipe_config, "dp m2_n2",
pipe_config->lane_count,
&pipe_config->dp_m2_n2);
}
DRM_DEBUG_KMS("audio: %i, infoframes: %i, infoframes enabled: 0x%x\n",
pipe_config->has_audio, pipe_config->has_infoframe,
pipe_config->infoframes.enable);
if (pipe_config->infoframes.enable &
intel_hdmi_infoframe_enable(HDMI_PACKET_TYPE_GENERAL_CONTROL))
DRM_DEBUG_KMS("GCP: 0x%x\n", pipe_config->infoframes.gcp);
if (pipe_config->infoframes.enable &
intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_AVI))
intel_dump_infoframe(dev_priv, &pipe_config->infoframes.avi);
if (pipe_config->infoframes.enable &
intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_SPD))
intel_dump_infoframe(dev_priv, &pipe_config->infoframes.spd);
if (pipe_config->infoframes.enable &
intel_hdmi_infoframe_enable(HDMI_INFOFRAME_TYPE_VENDOR))
intel_dump_infoframe(dev_priv, &pipe_config->infoframes.hdmi);
DRM_DEBUG_KMS("requested mode:\n");
drm_mode_debug_printmodeline(&pipe_config->base.mode);
DRM_DEBUG_KMS("adjusted mode:\n");
drm_mode_debug_printmodeline(&pipe_config->base.adjusted_mode);
intel_dump_crtc_timings(&pipe_config->base.adjusted_mode);
DRM_DEBUG_KMS("port clock: %d, pipe src size: %dx%d, pixel rate %d\n",
pipe_config->port_clock,
pipe_config->pipe_src_w, pipe_config->pipe_src_h,
pipe_config->pixel_rate);
if (INTEL_GEN(dev_priv) >= 9)
DRM_DEBUG_KMS("num_scalers: %d, scaler_users: 0x%x, scaler_id: %d\n",
crtc->num_scalers,
pipe_config->scaler_state.scaler_users,
pipe_config->scaler_state.scaler_id);
if (HAS_GMCH(dev_priv))
DRM_DEBUG_KMS("gmch pfit: control: 0x%08x, ratios: 0x%08x, lvds border: 0x%08x\n",
pipe_config->gmch_pfit.control,
pipe_config->gmch_pfit.pgm_ratios,
pipe_config->gmch_pfit.lvds_border_bits);
else
DRM_DEBUG_KMS("pch pfit: pos: 0x%08x, size: 0x%08x, %s, force thru: %s\n",
pipe_config->pch_pfit.pos,
pipe_config->pch_pfit.size,
enableddisabled(pipe_config->pch_pfit.enabled),
yesno(pipe_config->pch_pfit.force_thru));
DRM_DEBUG_KMS("ips: %i, double wide: %i\n",
pipe_config->ips_enabled, pipe_config->double_wide);
intel_dpll_dump_hw_state(dev_priv, &pipe_config->dpll_hw_state);
if (IS_CHERRYVIEW(dev_priv))
DRM_DEBUG_KMS("cgm_mode: 0x%x gamma_mode: 0x%x gamma_enable: %d csc_enable: %d\n",
pipe_config->cgm_mode, pipe_config->gamma_mode,
pipe_config->gamma_enable, pipe_config->csc_enable);
else
DRM_DEBUG_KMS("csc_mode: 0x%x gamma_mode: 0x%x gamma_enable: %d csc_enable: %d\n",
pipe_config->csc_mode, pipe_config->gamma_mode,
pipe_config->gamma_enable, pipe_config->csc_enable);
dump_planes:
if (!state)
return;
for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
if (plane->pipe == crtc->pipe)
intel_dump_plane_state(plane_state);
}
}
static bool check_digital_port_conflicts(struct intel_atomic_state *state)
{
struct drm_device *dev = state->base.dev;
struct drm_connector *connector;
struct drm_connector_list_iter conn_iter;
unsigned int used_ports = 0;
unsigned int used_mst_ports = 0;
bool ret = true;
/*
* We're going to peek into connector->state,
* hence connection_mutex must be held.
*/
drm_modeset_lock_assert_held(&dev->mode_config.connection_mutex);
/*
* Walk the connector list instead of the encoder
* list to detect the problem on ddi platforms
* where there's just one encoder per digital port.
*/
drm_connector_list_iter_begin(dev, &conn_iter);
drm_for_each_connector_iter(connector, &conn_iter) {
struct drm_connector_state *connector_state;
struct intel_encoder *encoder;
connector_state =
drm_atomic_get_new_connector_state(&state->base,
connector);
if (!connector_state)
connector_state = connector->state;
if (!connector_state->best_encoder)
continue;
encoder = to_intel_encoder(connector_state->best_encoder);
WARN_ON(!connector_state->crtc);
switch (encoder->type) {
unsigned int port_mask;
case INTEL_OUTPUT_DDI:
if (WARN_ON(!HAS_DDI(to_i915(dev))))
break;
/* else, fall through */
case INTEL_OUTPUT_DP:
case INTEL_OUTPUT_HDMI:
case INTEL_OUTPUT_EDP:
port_mask = 1 << encoder->port;
/* the same port mustn't appear more than once */
if (used_ports & port_mask)
ret = false;
used_ports |= port_mask;
break;
case INTEL_OUTPUT_DP_MST:
used_mst_ports |=
1 << encoder->port;
break;
default:
break;
}
}
drm_connector_list_iter_end(&conn_iter);
/* can't mix MST and SST/HDMI on the same port */
if (used_ports & used_mst_ports)
return false;
return ret;
}
static int
clear_intel_crtc_state(struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv =
to_i915(crtc_state->base.crtc->dev);
struct intel_crtc_state *saved_state;
saved_state = kzalloc(sizeof(*saved_state), GFP_KERNEL);
if (!saved_state)
return -ENOMEM;
/* FIXME: before the switch to atomic started, a new pipe_config was
* kzalloc'd. Code that depends on any field being zero should be
* fixed, so that the crtc_state can be safely duplicated. For now,
* only fields that are know to not cause problems are preserved. */
saved_state->scaler_state = crtc_state->scaler_state;
saved_state->shared_dpll = crtc_state->shared_dpll;
saved_state->dpll_hw_state = crtc_state->dpll_hw_state;
memcpy(saved_state->icl_port_dplls, crtc_state->icl_port_dplls,
sizeof(saved_state->icl_port_dplls));
saved_state->crc_enabled = crtc_state->crc_enabled;
if (IS_G4X(dev_priv) ||
IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
saved_state->wm = crtc_state->wm;
/*
* Save the slave bitmask which gets filled for master crtc state during
* slave atomic check call.
*/
if (is_trans_port_sync_master(crtc_state))
saved_state->sync_mode_slaves_mask =
crtc_state->sync_mode_slaves_mask;
/* Keep base drm_crtc_state intact, only clear our extended struct */
BUILD_BUG_ON(offsetof(struct intel_crtc_state, base));
memcpy(&crtc_state->base + 1, &saved_state->base + 1,
sizeof(*crtc_state) - sizeof(crtc_state->base));
kfree(saved_state);
return 0;
}
static int
intel_modeset_pipe_config(struct intel_crtc_state *pipe_config)
{
struct drm_crtc *crtc = pipe_config->base.crtc;
struct drm_atomic_state *state = pipe_config->base.state;
struct intel_encoder *encoder;
struct drm_connector *connector;
struct drm_connector_state *connector_state;
int base_bpp, ret;
int i;
bool retry = true;
ret = clear_intel_crtc_state(pipe_config);
if (ret)
return ret;
pipe_config->cpu_transcoder =
(enum transcoder) to_intel_crtc(crtc)->pipe;
/*
* Sanitize sync polarity flags based on requested ones. If neither
* positive or negative polarity is requested, treat this as meaning
* negative polarity.
*/
if (!(pipe_config->base.adjusted_mode.flags &
(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC)))
pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NHSYNC;
if (!(pipe_config->base.adjusted_mode.flags &
(DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC)))
pipe_config->base.adjusted_mode.flags |= DRM_MODE_FLAG_NVSYNC;
ret = compute_baseline_pipe_bpp(to_intel_crtc(crtc),
pipe_config);
if (ret)
return ret;
base_bpp = pipe_config->pipe_bpp;
/*
* Determine the real pipe dimensions. Note that stereo modes can
* increase the actual pipe size due to the frame doubling and
* insertion of additional space for blanks between the frame. This
* is stored in the crtc timings. We use the requested mode to do this
* computation to clearly distinguish it from the adjusted mode, which
* can be changed by the connectors in the below retry loop.
*/
drm_mode_get_hv_timing(&pipe_config->base.mode,
&pipe_config->pipe_src_w,
&pipe_config->pipe_src_h);
for_each_new_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != crtc)
continue;
encoder = to_intel_encoder(connector_state->best_encoder);
if (!check_single_encoder_cloning(state, to_intel_crtc(crtc), encoder)) {
DRM_DEBUG_KMS("rejecting invalid cloning configuration\n");
return -EINVAL;
}
/*
* Determine output_types before calling the .compute_config()
* hooks so that the hooks can use this information safely.
*/
if (encoder->compute_output_type)
pipe_config->output_types |=
BIT(encoder->compute_output_type(encoder, pipe_config,
connector_state));
else
pipe_config->output_types |= BIT(encoder->type);
}
encoder_retry:
/* Ensure the port clock defaults are reset when retrying. */
pipe_config->port_clock = 0;
pipe_config->pixel_multiplier = 1;
/* Fill in default crtc timings, allow encoders to overwrite them. */
drm_mode_set_crtcinfo(&pipe_config->base.adjusted_mode,
CRTC_STEREO_DOUBLE);
/* Set the crtc_state defaults for trans_port_sync */
pipe_config->master_transcoder = INVALID_TRANSCODER;
ret = icl_add_sync_mode_crtcs(pipe_config);
if (ret) {
DRM_DEBUG_KMS("Cannot assign Sync Mode CRTCs: %d\n",
ret);
return ret;
}
/* Pass our mode to the connectors and the CRTC to give them a chance to
* adjust it according to limitations or connector properties, and also
* a chance to reject the mode entirely.
*/
for_each_new_connector_in_state(state, connector, connector_state, i) {
if (connector_state->crtc != crtc)
continue;
encoder = to_intel_encoder(connector_state->best_encoder);
ret = encoder->compute_config(encoder, pipe_config,
connector_state);
if (ret < 0) {
if (ret != -EDEADLK)
DRM_DEBUG_KMS("Encoder config failure: %d\n",
ret);
return ret;
}
}
/* Set default port clock if not overwritten by the encoder. Needs to be
* done afterwards in case the encoder adjusts the mode. */
if (!pipe_config->port_clock)
pipe_config->port_clock = pipe_config->base.adjusted_mode.crtc_clock
* pipe_config->pixel_multiplier;
ret = intel_crtc_compute_config(to_intel_crtc(crtc), pipe_config);
if (ret == -EDEADLK)
return ret;
if (ret < 0) {
DRM_DEBUG_KMS("CRTC fixup failed\n");
return ret;
}
if (ret == RETRY) {
if (WARN(!retry, "loop in pipe configuration computation\n"))
return -EINVAL;
DRM_DEBUG_KMS("CRTC bw constrained, retrying\n");
retry = false;
goto encoder_retry;
}
/* Dithering seems to not pass-through bits correctly when it should, so
* only enable it on 6bpc panels and when its not a compliance
* test requesting 6bpc video pattern.
*/
pipe_config->dither = (pipe_config->pipe_bpp == 6*3) &&
!pipe_config->dither_force_disable;
DRM_DEBUG_KMS("hw max bpp: %i, pipe bpp: %i, dithering: %i\n",
base_bpp, pipe_config->pipe_bpp, pipe_config->dither);
return 0;
}
bool intel_fuzzy_clock_check(int clock1, int clock2)
{
int diff;
if (clock1 == clock2)
return true;
if (!clock1 || !clock2)
return false;
diff = abs(clock1 - clock2);
if (((((diff + clock1 + clock2) * 100)) / (clock1 + clock2)) < 105)
return true;
return false;
}
static bool
intel_compare_m_n(unsigned int m, unsigned int n,
unsigned int m2, unsigned int n2,
bool exact)
{
if (m == m2 && n == n2)
return true;
if (exact || !m || !n || !m2 || !n2)
return false;
BUILD_BUG_ON(DATA_LINK_M_N_MASK > INT_MAX);
if (n > n2) {
while (n > n2) {
m2 <<= 1;
n2 <<= 1;
}
} else if (n < n2) {
while (n < n2) {
m <<= 1;
n <<= 1;
}
}
if (n != n2)
return false;
return intel_fuzzy_clock_check(m, m2);
}
static bool
intel_compare_link_m_n(const struct intel_link_m_n *m_n,
const struct intel_link_m_n *m2_n2,
bool exact)
{
return m_n->tu == m2_n2->tu &&
intel_compare_m_n(m_n->gmch_m, m_n->gmch_n,
m2_n2->gmch_m, m2_n2->gmch_n, exact) &&
intel_compare_m_n(m_n->link_m, m_n->link_n,
m2_n2->link_m, m2_n2->link_n, exact);
}
static bool
intel_compare_infoframe(const union hdmi_infoframe *a,
const union hdmi_infoframe *b)
{
return memcmp(a, b, sizeof(*a)) == 0;
}
static void
pipe_config_infoframe_mismatch(struct drm_i915_private *dev_priv,
bool fastset, const char *name,
const union hdmi_infoframe *a,
const union hdmi_infoframe *b)
{
if (fastset) {
if ((drm_debug & DRM_UT_KMS) == 0)
return;
DRM_DEBUG_KMS("fastset mismatch in %s infoframe\n", name);
DRM_DEBUG_KMS("expected:\n");
hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, a);
DRM_DEBUG_KMS("found:\n");
hdmi_infoframe_log(KERN_DEBUG, dev_priv->drm.dev, b);
} else {
DRM_ERROR("mismatch in %s infoframe\n", name);
DRM_ERROR("expected:\n");
hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, a);
DRM_ERROR("found:\n");
hdmi_infoframe_log(KERN_ERR, dev_priv->drm.dev, b);
}
}
static void __printf(4, 5)
pipe_config_mismatch(bool fastset, const struct intel_crtc *crtc,
const char *name, const char *format, ...)
{
struct va_format vaf;
va_list args;
va_start(args, format);
vaf.fmt = format;
vaf.va = &args;
if (fastset)
DRM_DEBUG_KMS("[CRTC:%d:%s] fastset mismatch in %s %pV\n",
crtc->base.base.id, crtc->base.name, name, &vaf);
else
DRM_ERROR("[CRTC:%d:%s] mismatch in %s %pV\n",
crtc->base.base.id, crtc->base.name, name, &vaf);
va_end(args);
}
static bool fastboot_enabled(struct drm_i915_private *dev_priv)
{
if (i915_modparams.fastboot != -1)
return i915_modparams.fastboot;
/* Enable fastboot by default on Skylake and newer */
if (INTEL_GEN(dev_priv) >= 9)
return true;
/* Enable fastboot by default on VLV and CHV */
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
return true;
/* Disabled by default on all others */
return false;
}
static bool
intel_pipe_config_compare(const struct intel_crtc_state *current_config,
const struct intel_crtc_state *pipe_config,
bool fastset)
{
struct drm_i915_private *dev_priv = to_i915(current_config->base.crtc->dev);
struct intel_crtc *crtc = to_intel_crtc(pipe_config->base.crtc);
bool ret = true;
u32 bp_gamma = 0;
bool fixup_inherited = fastset &&
(current_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED) &&
!(pipe_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED);
if (fixup_inherited && !fastboot_enabled(dev_priv)) {
DRM_DEBUG_KMS("initial modeset and fastboot not set\n");
ret = false;
}
#define PIPE_CONF_CHECK_X(name) do { \
if (current_config->name != pipe_config->name) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(expected 0x%08x, found 0x%08x)", \
current_config->name, \
pipe_config->name); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_I(name) do { \
if (current_config->name != pipe_config->name) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(expected %i, found %i)", \
current_config->name, \
pipe_config->name); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_BOOL(name) do { \
if (current_config->name != pipe_config->name) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(expected %s, found %s)", \
yesno(current_config->name), \
yesno(pipe_config->name)); \
ret = false; \
} \
} while (0)
/*
* Checks state where we only read out the enabling, but not the entire
* state itself (like full infoframes or ELD for audio). These states
* require a full modeset on bootup to fix up.
*/
#define PIPE_CONF_CHECK_BOOL_INCOMPLETE(name) do { \
if (!fixup_inherited || (!current_config->name && !pipe_config->name)) { \
PIPE_CONF_CHECK_BOOL(name); \
} else { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"unable to verify whether state matches exactly, forcing modeset (expected %s, found %s)", \
yesno(current_config->name), \
yesno(pipe_config->name)); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_P(name) do { \
if (current_config->name != pipe_config->name) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(expected %p, found %p)", \
current_config->name, \
pipe_config->name); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_M_N(name) do { \
if (!intel_compare_link_m_n(&current_config->name, \
&pipe_config->name,\
!fastset)) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(expected tu %i gmch %i/%i link %i/%i, " \
"found tu %i, gmch %i/%i link %i/%i)", \
current_config->name.tu, \
current_config->name.gmch_m, \
current_config->name.gmch_n, \
current_config->name.link_m, \
current_config->name.link_n, \
pipe_config->name.tu, \
pipe_config->name.gmch_m, \
pipe_config->name.gmch_n, \
pipe_config->name.link_m, \
pipe_config->name.link_n); \
ret = false; \
} \
} while (0)
/* This is required for BDW+ where there is only one set of registers for
* switching between high and low RR.
* This macro can be used whenever a comparison has to be made between one
* hw state and multiple sw state variables.
*/
#define PIPE_CONF_CHECK_M_N_ALT(name, alt_name) do { \
if (!intel_compare_link_m_n(&current_config->name, \
&pipe_config->name, !fastset) && \
!intel_compare_link_m_n(&current_config->alt_name, \
&pipe_config->name, !fastset)) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(expected tu %i gmch %i/%i link %i/%i, " \
"or tu %i gmch %i/%i link %i/%i, " \
"found tu %i, gmch %i/%i link %i/%i)", \
current_config->name.tu, \
current_config->name.gmch_m, \
current_config->name.gmch_n, \
current_config->name.link_m, \
current_config->name.link_n, \
current_config->alt_name.tu, \
current_config->alt_name.gmch_m, \
current_config->alt_name.gmch_n, \
current_config->alt_name.link_m, \
current_config->alt_name.link_n, \
pipe_config->name.tu, \
pipe_config->name.gmch_m, \
pipe_config->name.gmch_n, \
pipe_config->name.link_m, \
pipe_config->name.link_n); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_FLAGS(name, mask) do { \
if ((current_config->name ^ pipe_config->name) & (mask)) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(%x) (expected %i, found %i)", \
(mask), \
current_config->name & (mask), \
pipe_config->name & (mask)); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_CLOCK_FUZZY(name) do { \
if (!intel_fuzzy_clock_check(current_config->name, pipe_config->name)) { \
pipe_config_mismatch(fastset, crtc, __stringify(name), \
"(expected %i, found %i)", \
current_config->name, \
pipe_config->name); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_INFOFRAME(name) do { \
if (!intel_compare_infoframe(&current_config->infoframes.name, \
&pipe_config->infoframes.name)) { \
pipe_config_infoframe_mismatch(dev_priv, fastset, __stringify(name), \
&current_config->infoframes.name, \
&pipe_config->infoframes.name); \
ret = false; \
} \
} while (0)
#define PIPE_CONF_CHECK_COLOR_LUT(name1, name2, bit_precision) do { \
if (current_config->name1 != pipe_config->name1) { \
pipe_config_mismatch(fastset, crtc, __stringify(name1), \
"(expected %i, found %i, won't compare lut values)", \
current_config->name1, \
pipe_config->name1); \
ret = false;\
} else { \
if (!intel_color_lut_equal(current_config->name2, \
pipe_config->name2, pipe_config->name1, \
bit_precision)) { \
pipe_config_mismatch(fastset, crtc, __stringify(name2), \
"hw_state doesn't match sw_state"); \
ret = false; \
} \
} \
} while (0)
#define PIPE_CONF_QUIRK(quirk) \
((current_config->quirks | pipe_config->quirks) & (quirk))
PIPE_CONF_CHECK_I(cpu_transcoder);
PIPE_CONF_CHECK_BOOL(has_pch_encoder);
PIPE_CONF_CHECK_I(fdi_lanes);
PIPE_CONF_CHECK_M_N(fdi_m_n);
PIPE_CONF_CHECK_I(lane_count);
PIPE_CONF_CHECK_X(lane_lat_optim_mask);
if (INTEL_GEN(dev_priv) < 8) {
PIPE_CONF_CHECK_M_N(dp_m_n);
if (current_config->has_drrs)
PIPE_CONF_CHECK_M_N(dp_m2_n2);
} else
PIPE_CONF_CHECK_M_N_ALT(dp_m_n, dp_m2_n2);
PIPE_CONF_CHECK_X(output_types);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hdisplay);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_htotal);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hblank_end);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_hsync_end);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vdisplay);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vtotal);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vblank_end);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_start);
PIPE_CONF_CHECK_I(base.adjusted_mode.crtc_vsync_end);
PIPE_CONF_CHECK_I(pixel_multiplier);
PIPE_CONF_CHECK_I(output_format);
PIPE_CONF_CHECK_I(dc3co_exitline);
PIPE_CONF_CHECK_BOOL(has_hdmi_sink);
if ((INTEL_GEN(dev_priv) < 8 && !IS_HASWELL(dev_priv)) ||
IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
PIPE_CONF_CHECK_BOOL(limited_color_range);
PIPE_CONF_CHECK_BOOL(hdmi_scrambling);
PIPE_CONF_CHECK_BOOL(hdmi_high_tmds_clock_ratio);
PIPE_CONF_CHECK_BOOL(has_infoframe);
PIPE_CONF_CHECK_BOOL(fec_enable);
PIPE_CONF_CHECK_BOOL_INCOMPLETE(has_audio);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_INTERLACE);
if (!PIPE_CONF_QUIRK(PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS)) {
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_PHSYNC);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_NHSYNC);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_PVSYNC);
PIPE_CONF_CHECK_FLAGS(base.adjusted_mode.flags,
DRM_MODE_FLAG_NVSYNC);
}
PIPE_CONF_CHECK_X(gmch_pfit.control);
/* pfit ratios are autocomputed by the hw on gen4+ */
if (INTEL_GEN(dev_priv) < 4)
PIPE_CONF_CHECK_X(gmch_pfit.pgm_ratios);
PIPE_CONF_CHECK_X(gmch_pfit.lvds_border_bits);
/*
* Changing the EDP transcoder input mux
* (A_ONOFF vs. A_ON) requires a full modeset.
*/
PIPE_CONF_CHECK_BOOL(pch_pfit.force_thru);
if (!fastset) {
PIPE_CONF_CHECK_I(pipe_src_w);
PIPE_CONF_CHECK_I(pipe_src_h);
PIPE_CONF_CHECK_BOOL(pch_pfit.enabled);
if (current_config->pch_pfit.enabled) {
PIPE_CONF_CHECK_X(pch_pfit.pos);
PIPE_CONF_CHECK_X(pch_pfit.size);
}
PIPE_CONF_CHECK_I(scaler_state.scaler_id);
PIPE_CONF_CHECK_CLOCK_FUZZY(pixel_rate);
PIPE_CONF_CHECK_X(gamma_mode);
if (IS_CHERRYVIEW(dev_priv))
PIPE_CONF_CHECK_X(cgm_mode);
else
PIPE_CONF_CHECK_X(csc_mode);
PIPE_CONF_CHECK_BOOL(gamma_enable);
PIPE_CONF_CHECK_BOOL(csc_enable);
bp_gamma = intel_color_get_gamma_bit_precision(pipe_config);
if (bp_gamma)
PIPE_CONF_CHECK_COLOR_LUT(gamma_mode, base.gamma_lut, bp_gamma);
}
PIPE_CONF_CHECK_BOOL(double_wide);
PIPE_CONF_CHECK_P(shared_dpll);
PIPE_CONF_CHECK_X(dpll_hw_state.dpll);
PIPE_CONF_CHECK_X(dpll_hw_state.dpll_md);
PIPE_CONF_CHECK_X(dpll_hw_state.fp0);
PIPE_CONF_CHECK_X(dpll_hw_state.fp1);
PIPE_CONF_CHECK_X(dpll_hw_state.wrpll);
PIPE_CONF_CHECK_X(dpll_hw_state.spll);
PIPE_CONF_CHECK_X(dpll_hw_state.ctrl1);
PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr1);
PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr2);
PIPE_CONF_CHECK_X(dpll_hw_state.cfgcr0);
PIPE_CONF_CHECK_X(dpll_hw_state.ebb0);
PIPE_CONF_CHECK_X(dpll_hw_state.ebb4);
PIPE_CONF_CHECK_X(dpll_hw_state.pll0);
PIPE_CONF_CHECK_X(dpll_hw_state.pll1);
PIPE_CONF_CHECK_X(dpll_hw_state.pll2);
PIPE_CONF_CHECK_X(dpll_hw_state.pll3);
PIPE_CONF_CHECK_X(dpll_hw_state.pll6);
PIPE_CONF_CHECK_X(dpll_hw_state.pll8);
PIPE_CONF_CHECK_X(dpll_hw_state.pll9);
PIPE_CONF_CHECK_X(dpll_hw_state.pll10);
PIPE_CONF_CHECK_X(dpll_hw_state.pcsdw12);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_refclkin_ctl);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_clktop2_coreclkctl1);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_clktop2_hsclkctl);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_div0);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_div1);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_lf);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_frac_lock);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_ssc);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_bias);
PIPE_CONF_CHECK_X(dpll_hw_state.mg_pll_tdc_coldst_bias);
PIPE_CONF_CHECK_X(dsi_pll.ctrl);
PIPE_CONF_CHECK_X(dsi_pll.div);
if (IS_G4X(dev_priv) || INTEL_GEN(dev_priv) >= 5)
PIPE_CONF_CHECK_I(pipe_bpp);
PIPE_CONF_CHECK_CLOCK_FUZZY(base.adjusted_mode.crtc_clock);
PIPE_CONF_CHECK_CLOCK_FUZZY(port_clock);
PIPE_CONF_CHECK_I(min_voltage_level);
PIPE_CONF_CHECK_X(infoframes.enable);
PIPE_CONF_CHECK_X(infoframes.gcp);
PIPE_CONF_CHECK_INFOFRAME(avi);
PIPE_CONF_CHECK_INFOFRAME(spd);
PIPE_CONF_CHECK_INFOFRAME(hdmi);
PIPE_CONF_CHECK_INFOFRAME(drm);
PIPE_CONF_CHECK_I(sync_mode_slaves_mask);
PIPE_CONF_CHECK_I(master_transcoder);
#undef PIPE_CONF_CHECK_X
#undef PIPE_CONF_CHECK_I
#undef PIPE_CONF_CHECK_BOOL
#undef PIPE_CONF_CHECK_BOOL_INCOMPLETE
#undef PIPE_CONF_CHECK_P
#undef PIPE_CONF_CHECK_FLAGS
#undef PIPE_CONF_CHECK_CLOCK_FUZZY
#undef PIPE_CONF_CHECK_COLOR_LUT
#undef PIPE_CONF_QUIRK
return ret;
}
static void intel_pipe_config_sanity_check(struct drm_i915_private *dev_priv,
const struct intel_crtc_state *pipe_config)
{
if (pipe_config->has_pch_encoder) {
int fdi_dotclock = intel_dotclock_calculate(intel_fdi_link_freq(dev_priv, pipe_config),
&pipe_config->fdi_m_n);
int dotclock = pipe_config->base.adjusted_mode.crtc_clock;
/*
* FDI already provided one idea for the dotclock.
* Yell if the encoder disagrees.
*/
WARN(!intel_fuzzy_clock_check(fdi_dotclock, dotclock),
"FDI dotclock and encoder dotclock mismatch, fdi: %i, encoder: %i\n",
fdi_dotclock, dotclock);
}
}
static void verify_wm_state(struct intel_crtc *crtc,
struct intel_crtc_state *new_crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
struct skl_hw_state {
struct skl_ddb_entry ddb_y[I915_MAX_PLANES];
struct skl_ddb_entry ddb_uv[I915_MAX_PLANES];
struct skl_ddb_allocation ddb;
struct skl_pipe_wm wm;
} *hw;
struct skl_ddb_allocation *sw_ddb;
struct skl_pipe_wm *sw_wm;
struct skl_ddb_entry *hw_ddb_entry, *sw_ddb_entry;
const enum pipe pipe = crtc->pipe;
int plane, level, max_level = ilk_wm_max_level(dev_priv);
if (INTEL_GEN(dev_priv) < 9 || !new_crtc_state->base.active)
return;
hw = kzalloc(sizeof(*hw), GFP_KERNEL);
if (!hw)
return;
skl_pipe_wm_get_hw_state(crtc, &hw->wm);
sw_wm = &new_crtc_state->wm.skl.optimal;
skl_pipe_ddb_get_hw_state(crtc, hw->ddb_y, hw->ddb_uv);
skl_ddb_get_hw_state(dev_priv, &hw->ddb);
sw_ddb = &dev_priv->wm.skl_hw.ddb;
if (INTEL_GEN(dev_priv) >= 11 &&
hw->ddb.enabled_slices != sw_ddb->enabled_slices)
DRM_ERROR("mismatch in DBUF Slices (expected %u, got %u)\n",
sw_ddb->enabled_slices,
hw->ddb.enabled_slices);
/* planes */
for_each_universal_plane(dev_priv, pipe, plane) {
struct skl_plane_wm *hw_plane_wm, *sw_plane_wm;
hw_plane_wm = &hw->wm.planes[plane];
sw_plane_wm = &sw_wm->planes[plane];
/* Watermarks */
for (level = 0; level <= max_level; level++) {
if (skl_wm_level_equals(&hw_plane_wm->wm[level],
&sw_plane_wm->wm[level]))
continue;
DRM_ERROR("mismatch in WM pipe %c plane %d level %d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
pipe_name(pipe), plane + 1, level,
sw_plane_wm->wm[level].plane_en,
sw_plane_wm->wm[level].plane_res_b,
sw_plane_wm->wm[level].plane_res_l,
hw_plane_wm->wm[level].plane_en,
hw_plane_wm->wm[level].plane_res_b,
hw_plane_wm->wm[level].plane_res_l);
}
if (!skl_wm_level_equals(&hw_plane_wm->trans_wm,
&sw_plane_wm->trans_wm)) {
DRM_ERROR("mismatch in trans WM pipe %c plane %d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
pipe_name(pipe), plane + 1,
sw_plane_wm->trans_wm.plane_en,
sw_plane_wm->trans_wm.plane_res_b,
sw_plane_wm->trans_wm.plane_res_l,
hw_plane_wm->trans_wm.plane_en,
hw_plane_wm->trans_wm.plane_res_b,
hw_plane_wm->trans_wm.plane_res_l);
}
/* DDB */
hw_ddb_entry = &hw->ddb_y[plane];
sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb_y[plane];
if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) {
DRM_ERROR("mismatch in DDB state pipe %c plane %d (expected (%u,%u), found (%u,%u))\n",
pipe_name(pipe), plane + 1,
sw_ddb_entry->start, sw_ddb_entry->end,
hw_ddb_entry->start, hw_ddb_entry->end);
}
}
/*
* cursor
* If the cursor plane isn't active, we may not have updated it's ddb
* allocation. In that case since the ddb allocation will be updated
* once the plane becomes visible, we can skip this check
*/
if (1) {
struct skl_plane_wm *hw_plane_wm, *sw_plane_wm;
hw_plane_wm = &hw->wm.planes[PLANE_CURSOR];
sw_plane_wm = &sw_wm->planes[PLANE_CURSOR];
/* Watermarks */
for (level = 0; level <= max_level; level++) {
if (skl_wm_level_equals(&hw_plane_wm->wm[level],
&sw_plane_wm->wm[level]))
continue;
DRM_ERROR("mismatch in WM pipe %c cursor level %d (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
pipe_name(pipe), level,
sw_plane_wm->wm[level].plane_en,
sw_plane_wm->wm[level].plane_res_b,
sw_plane_wm->wm[level].plane_res_l,
hw_plane_wm->wm[level].plane_en,
hw_plane_wm->wm[level].plane_res_b,
hw_plane_wm->wm[level].plane_res_l);
}
if (!skl_wm_level_equals(&hw_plane_wm->trans_wm,
&sw_plane_wm->trans_wm)) {
DRM_ERROR("mismatch in trans WM pipe %c cursor (expected e=%d b=%u l=%u, got e=%d b=%u l=%u)\n",
pipe_name(pipe),
sw_plane_wm->trans_wm.plane_en,
sw_plane_wm->trans_wm.plane_res_b,
sw_plane_wm->trans_wm.plane_res_l,
hw_plane_wm->trans_wm.plane_en,
hw_plane_wm->trans_wm.plane_res_b,
hw_plane_wm->trans_wm.plane_res_l);
}
/* DDB */
hw_ddb_entry = &hw->ddb_y[PLANE_CURSOR];
sw_ddb_entry = &new_crtc_state->wm.skl.plane_ddb_y[PLANE_CURSOR];
if (!skl_ddb_entry_equal(hw_ddb_entry, sw_ddb_entry)) {
DRM_ERROR("mismatch in DDB state pipe %c cursor (expected (%u,%u), found (%u,%u))\n",
pipe_name(pipe),
sw_ddb_entry->start, sw_ddb_entry->end,
hw_ddb_entry->start, hw_ddb_entry->end);
}
}
kfree(hw);
}
static void
verify_connector_state(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct drm_connector *connector;
struct drm_connector_state *new_conn_state;
int i;
for_each_new_connector_in_state(&state->base, connector, new_conn_state, i) {
struct drm_encoder *encoder = connector->encoder;
struct intel_crtc_state *crtc_state = NULL;
if (new_conn_state->crtc != &crtc->base)
continue;
if (crtc)
crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
intel_connector_verify_state(crtc_state, new_conn_state);
I915_STATE_WARN(new_conn_state->best_encoder != encoder,
"connector's atomic encoder doesn't match legacy encoder\n");
}
}
static void
verify_encoder_state(struct drm_i915_private *dev_priv, struct intel_atomic_state *state)
{
struct intel_encoder *encoder;
struct drm_connector *connector;
struct drm_connector_state *old_conn_state, *new_conn_state;
int i;
for_each_intel_encoder(&dev_priv->drm, encoder) {
bool enabled = false, found = false;
enum pipe pipe;
DRM_DEBUG_KMS("[ENCODER:%d:%s]\n",
encoder->base.base.id,
encoder->base.name);
for_each_oldnew_connector_in_state(&state->base, connector, old_conn_state,
new_conn_state, i) {
if (old_conn_state->best_encoder == &encoder->base)
found = true;
if (new_conn_state->best_encoder != &encoder->base)
continue;
found = enabled = true;
I915_STATE_WARN(new_conn_state->crtc !=
encoder->base.crtc,
"connector's crtc doesn't match encoder crtc\n");
}
if (!found)
continue;
I915_STATE_WARN(!!encoder->base.crtc != enabled,
"encoder's enabled state mismatch "
"(expected %i, found %i)\n",
!!encoder->base.crtc, enabled);
if (!encoder->base.crtc) {
bool active;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active,
"encoder detached but still enabled on pipe %c.\n",
pipe_name(pipe));
}
}
}
static void
verify_crtc_state(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_encoder *encoder;
struct intel_crtc_state *pipe_config;
struct drm_atomic_state *state;
bool active;
state = old_crtc_state->base.state;
__drm_atomic_helper_crtc_destroy_state(&old_crtc_state->base);
pipe_config = old_crtc_state;
memset(pipe_config, 0, sizeof(*pipe_config));
pipe_config->base.crtc = &crtc->base;
pipe_config->base.state = state;
DRM_DEBUG_KMS("[CRTC:%d:%s]\n", crtc->base.base.id, crtc->base.name);
active = dev_priv->display.get_pipe_config(crtc, pipe_config);
/* we keep both pipes enabled on 830 */
if (IS_I830(dev_priv))
active = new_crtc_state->base.active;
I915_STATE_WARN(new_crtc_state->base.active != active,
"crtc active state doesn't match with hw state "
"(expected %i, found %i)\n", new_crtc_state->base.active, active);
I915_STATE_WARN(crtc->active != new_crtc_state->base.active,
"transitional active state does not match atomic hw state "
"(expected %i, found %i)\n", new_crtc_state->base.active, crtc->active);
for_each_encoder_on_crtc(dev, &crtc->base, encoder) {
enum pipe pipe;
active = encoder->get_hw_state(encoder, &pipe);
I915_STATE_WARN(active != new_crtc_state->base.active,
"[ENCODER:%i] active %i with crtc active %i\n",
encoder->base.base.id, active, new_crtc_state->base.active);
I915_STATE_WARN(active && crtc->pipe != pipe,
"Encoder connected to wrong pipe %c\n",
pipe_name(pipe));
if (active)
encoder->get_config(encoder, pipe_config);
}
intel_crtc_compute_pixel_rate(pipe_config);
if (!new_crtc_state->base.active)
return;
intel_pipe_config_sanity_check(dev_priv, pipe_config);
if (!intel_pipe_config_compare(new_crtc_state,
pipe_config, false)) {
I915_STATE_WARN(1, "pipe state doesn't match!\n");
intel_dump_pipe_config(pipe_config, NULL, "[hw state]");
intel_dump_pipe_config(new_crtc_state, NULL, "[sw state]");
}
}
static void
intel_verify_planes(struct intel_atomic_state *state)
{
struct intel_plane *plane;
const struct intel_plane_state *plane_state;
int i;
for_each_new_intel_plane_in_state(state, plane,
plane_state, i)
assert_plane(plane, plane_state->planar_slave ||
plane_state->base.visible);
}
static void
verify_single_dpll_state(struct drm_i915_private *dev_priv,
struct intel_shared_dpll *pll,
struct intel_crtc *crtc,
struct intel_crtc_state *new_crtc_state)
{
struct intel_dpll_hw_state dpll_hw_state;
unsigned int crtc_mask;
bool active;
memset(&dpll_hw_state, 0, sizeof(dpll_hw_state));
DRM_DEBUG_KMS("%s\n", pll->info->name);
active = pll->info->funcs->get_hw_state(dev_priv, pll, &dpll_hw_state);
if (!(pll->info->flags & INTEL_DPLL_ALWAYS_ON)) {
I915_STATE_WARN(!pll->on && pll->active_mask,
"pll in active use but not on in sw tracking\n");
I915_STATE_WARN(pll->on && !pll->active_mask,
"pll is on but not used by any active crtc\n");
I915_STATE_WARN(pll->on != active,
"pll on state mismatch (expected %i, found %i)\n",
pll->on, active);
}
if (!crtc) {
I915_STATE_WARN(pll->active_mask & ~pll->state.crtc_mask,
"more active pll users than references: %x vs %x\n",
pll->active_mask, pll->state.crtc_mask);
return;
}
crtc_mask = drm_crtc_mask(&crtc->base);
if (new_crtc_state->base.active)
I915_STATE_WARN(!(pll->active_mask & crtc_mask),
"pll active mismatch (expected pipe %c in active mask 0x%02x)\n",
pipe_name(drm_crtc_index(&crtc->base)), pll->active_mask);
else
I915_STATE_WARN(pll->active_mask & crtc_mask,
"pll active mismatch (didn't expect pipe %c in active mask 0x%02x)\n",
pipe_name(drm_crtc_index(&crtc->base)), pll->active_mask);
I915_STATE_WARN(!(pll->state.crtc_mask & crtc_mask),
"pll enabled crtcs mismatch (expected 0x%x in 0x%02x)\n",
crtc_mask, pll->state.crtc_mask);
I915_STATE_WARN(pll->on && memcmp(&pll->state.hw_state,
&dpll_hw_state,
sizeof(dpll_hw_state)),
"pll hw state mismatch\n");
}
static void
verify_shared_dpll_state(struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (new_crtc_state->shared_dpll)
verify_single_dpll_state(dev_priv, new_crtc_state->shared_dpll, crtc, new_crtc_state);
if (old_crtc_state->shared_dpll &&
old_crtc_state->shared_dpll != new_crtc_state->shared_dpll) {
unsigned int crtc_mask = drm_crtc_mask(&crtc->base);
struct intel_shared_dpll *pll = old_crtc_state->shared_dpll;
I915_STATE_WARN(pll->active_mask & crtc_mask,
"pll active mismatch (didn't expect pipe %c in active mask)\n",
pipe_name(drm_crtc_index(&crtc->base)));
I915_STATE_WARN(pll->state.crtc_mask & crtc_mask,
"pll enabled crtcs mismatch (found %x in enabled mask)\n",
pipe_name(drm_crtc_index(&crtc->base)));
}
}
static void
intel_modeset_verify_crtc(struct intel_crtc *crtc,
struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
if (!needs_modeset(new_crtc_state) && !new_crtc_state->update_pipe)
return;
verify_wm_state(crtc, new_crtc_state);
verify_connector_state(state, crtc);
verify_crtc_state(crtc, old_crtc_state, new_crtc_state);
verify_shared_dpll_state(crtc, old_crtc_state, new_crtc_state);
}
static void
verify_disabled_dpll_state(struct drm_i915_private *dev_priv)
{
int i;
for (i = 0; i < dev_priv->num_shared_dpll; i++)
verify_single_dpll_state(dev_priv, &dev_priv->shared_dplls[i], NULL, NULL);
}
static void
intel_modeset_verify_disabled(struct drm_i915_private *dev_priv,
struct intel_atomic_state *state)
{
verify_encoder_state(dev_priv, state);
verify_connector_state(state, NULL);
verify_disabled_dpll_state(dev_priv);
}
static void
intel_crtc_update_active_timings(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
const struct drm_display_mode *adjusted_mode =
&crtc_state->base.adjusted_mode;
drm_calc_timestamping_constants(&crtc->base, adjusted_mode);
/*
* The scanline counter increments at the leading edge of hsync.
*
* On most platforms it starts counting from vtotal-1 on the
* first active line. That means the scanline counter value is
* always one less than what we would expect. Ie. just after
* start of vblank, which also occurs at start of hsync (on the
* last active line), the scanline counter will read vblank_start-1.
*
* On gen2 the scanline counter starts counting from 1 instead
* of vtotal-1, so we have to subtract one (or rather add vtotal-1
* to keep the value positive), instead of adding one.
*
* On HSW+ the behaviour of the scanline counter depends on the output
* type. For DP ports it behaves like most other platforms, but on HDMI
* there's an extra 1 line difference. So we need to add two instead of
* one to the value.
*
* On VLV/CHV DSI the scanline counter would appear to increment
* approx. 1/3 of a scanline before start of vblank. Unfortunately
* that means we can't tell whether we're in vblank or not while
* we're on that particular line. We must still set scanline_offset
* to 1 so that the vblank timestamps come out correct when we query
* the scanline counter from within the vblank interrupt handler.
* However if queried just before the start of vblank we'll get an
* answer that's slightly in the future.
*/
if (IS_GEN(dev_priv, 2)) {
int vtotal;
vtotal = adjusted_mode->crtc_vtotal;
if (adjusted_mode->flags & DRM_MODE_FLAG_INTERLACE)
vtotal /= 2;
crtc->scanline_offset = vtotal - 1;
} else if (HAS_DDI(dev_priv) &&
intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
crtc->scanline_offset = 2;
} else {
crtc->scanline_offset = 1;
}
}
static void intel_modeset_clear_plls(struct intel_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_crtc_state *new_crtc_state;
struct intel_crtc *crtc;
int i;
if (!dev_priv->display.crtc_compute_clock)
return;
for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
if (!needs_modeset(new_crtc_state))
continue;
intel_release_shared_dplls(state, crtc);
}
}
/*
* This implements the workaround described in the "notes" section of the mode
* set sequence documentation. When going from no pipes or single pipe to
* multiple pipes, and planes are enabled after the pipe, we need to wait at
* least 2 vblanks on the first pipe before enabling planes on the second pipe.
*/
static int haswell_mode_set_planes_workaround(struct intel_atomic_state *state)
{
struct intel_crtc_state *crtc_state;
struct intel_crtc *crtc;
struct intel_crtc_state *first_crtc_state = NULL;
struct intel_crtc_state *other_crtc_state = NULL;
enum pipe first_pipe = INVALID_PIPE, enabled_pipe = INVALID_PIPE;
int i;
/* look at all crtc's that are going to be enabled in during modeset */
for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
if (!crtc_state->base.active ||
!needs_modeset(crtc_state))
continue;
if (first_crtc_state) {
other_crtc_state = crtc_state;
break;
} else {
first_crtc_state = crtc_state;
first_pipe = crtc->pipe;
}
}
/* No workaround needed? */
if (!first_crtc_state)
return 0;
/* w/a possibly needed, check how many crtc's are already enabled. */
for_each_intel_crtc(state->base.dev, crtc) {
crtc_state = intel_atomic_get_crtc_state(&state->base, crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
crtc_state->hsw_workaround_pipe = INVALID_PIPE;
if (!crtc_state->base.active ||
needs_modeset(crtc_state))
continue;
/* 2 or more enabled crtcs means no need for w/a */
if (enabled_pipe != INVALID_PIPE)
return 0;
enabled_pipe = crtc->pipe;
}
if (enabled_pipe != INVALID_PIPE)
first_crtc_state->hsw_workaround_pipe = enabled_pipe;
else if (other_crtc_state)
other_crtc_state->hsw_workaround_pipe = first_pipe;
return 0;
}
static int intel_modeset_checks(struct intel_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_crtc_state *old_crtc_state, *new_crtc_state;
struct intel_crtc *crtc;
int ret, i;
/* keep the current setting */
if (!state->cdclk.force_min_cdclk_changed)
state->cdclk.force_min_cdclk = dev_priv->cdclk.force_min_cdclk;
state->modeset = true;
state->active_pipes = dev_priv->active_pipes;
state->cdclk.logical = dev_priv->cdclk.logical;
state->cdclk.actual = dev_priv->cdclk.actual;
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
if (new_crtc_state->base.active)
state->active_pipes |= BIT(crtc->pipe);
else
state->active_pipes &= ~BIT(crtc->pipe);
if (old_crtc_state->base.active != new_crtc_state->base.active)
state->active_pipe_changes |= BIT(crtc->pipe);
}
if (state->active_pipe_changes) {
ret = intel_atomic_lock_global_state(state);
if (ret)
return ret;
}
ret = intel_modeset_calc_cdclk(state);
if (ret)
return ret;
intel_modeset_clear_plls(state);
if (IS_HASWELL(dev_priv))
return haswell_mode_set_planes_workaround(state);
return 0;
}
/*
* Handle calculation of various watermark data at the end of the atomic check
* phase. The code here should be run after the per-crtc and per-plane 'check'
* handlers to ensure that all derived state has been updated.
*/
static int calc_watermark_data(struct intel_atomic_state *state)
{
struct drm_device *dev = state->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
/* Is there platform-specific watermark information to calculate? */
if (dev_priv->display.compute_global_watermarks)
return dev_priv->display.compute_global_watermarks(state);
return 0;
}
static void intel_crtc_check_fastset(const struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
if (!intel_pipe_config_compare(old_crtc_state, new_crtc_state, true))
return;
new_crtc_state->base.mode_changed = false;
new_crtc_state->update_pipe = true;
/*
* If we're not doing the full modeset we want to
* keep the current M/N values as they may be
* sufficiently different to the computed values
* to cause problems.
*
* FIXME: should really copy more fuzzy state here
*/
new_crtc_state->fdi_m_n = old_crtc_state->fdi_m_n;
new_crtc_state->dp_m_n = old_crtc_state->dp_m_n;
new_crtc_state->dp_m2_n2 = old_crtc_state->dp_m2_n2;
new_crtc_state->has_drrs = old_crtc_state->has_drrs;
}
static int intel_crtc_add_planes_to_state(struct intel_atomic_state *state,
struct intel_crtc *crtc,
u8 plane_ids_mask)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_plane *plane;
for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
struct intel_plane_state *plane_state;
if ((plane_ids_mask & BIT(plane->id)) == 0)
continue;
plane_state = intel_atomic_get_plane_state(state, plane);
if (IS_ERR(plane_state))
return PTR_ERR(plane_state);
}
return 0;
}
static bool active_planes_affects_min_cdclk(struct drm_i915_private *dev_priv)
{
/* See {hsw,vlv,ivb}_plane_ratio() */
return IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv) ||
IS_CHERRYVIEW(dev_priv) || IS_VALLEYVIEW(dev_priv) ||
IS_IVYBRIDGE(dev_priv);
}
static int intel_atomic_check_planes(struct intel_atomic_state *state,
bool *need_modeset)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_crtc_state *old_crtc_state, *new_crtc_state;
struct intel_plane_state *plane_state;
struct intel_plane *plane;
struct intel_crtc *crtc;
int i, ret;
ret = icl_add_linked_planes(state);
if (ret)
return ret;
for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
ret = intel_plane_atomic_check(state, plane);
if (ret) {
DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic driver check failed\n",
plane->base.base.id, plane->base.name);
return ret;
}
}
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
u8 old_active_planes, new_active_planes;
ret = icl_check_nv12_planes(new_crtc_state);
if (ret)
return ret;
/*
* On some platforms the number of active planes affects
* the planes' minimum cdclk calculation. Add such planes
* to the state before we compute the minimum cdclk.
*/
if (!active_planes_affects_min_cdclk(dev_priv))
continue;
old_active_planes = old_crtc_state->active_planes & ~BIT(PLANE_CURSOR);
new_active_planes = new_crtc_state->active_planes & ~BIT(PLANE_CURSOR);
if (hweight8(old_active_planes) == hweight8(new_active_planes))
continue;
ret = intel_crtc_add_planes_to_state(state, crtc, new_active_planes);
if (ret)
return ret;
}
/*
* active_planes bitmask has been updated, and potentially
* affected planes are part of the state. We can now
* compute the minimum cdclk for each plane.
*/
for_each_new_intel_plane_in_state(state, plane, plane_state, i)
*need_modeset |= intel_plane_calc_min_cdclk(state, plane);
return 0;
}
static int intel_atomic_check_crtcs(struct intel_atomic_state *state)
{
struct intel_crtc_state *crtc_state;
struct intel_crtc *crtc;
int i;
for_each_new_intel_crtc_in_state(state, crtc, crtc_state, i) {
int ret = intel_crtc_atomic_check(state, crtc);
if (ret) {
DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic driver check failed\n",
crtc->base.base.id, crtc->base.name);
return ret;
}
}
return 0;
}
/**
* intel_atomic_check - validate state object
* @dev: drm device
* @_state: state to validate
*/
static int intel_atomic_check(struct drm_device *dev,
struct drm_atomic_state *_state)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_atomic_state *state = to_intel_atomic_state(_state);
struct intel_crtc_state *old_crtc_state, *new_crtc_state;
struct intel_crtc *crtc;
int ret, i;
bool any_ms = false;
/* Catch I915_MODE_FLAG_INHERITED */
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
if (new_crtc_state->base.mode.private_flags !=
old_crtc_state->base.mode.private_flags)
new_crtc_state->base.mode_changed = true;
}
ret = drm_atomic_helper_check_modeset(dev, &state->base);
if (ret)
goto fail;
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
if (!needs_modeset(new_crtc_state))
continue;
if (!new_crtc_state->base.enable) {
any_ms = true;
continue;
}
ret = intel_modeset_pipe_config(new_crtc_state);
if (ret)
goto fail;
intel_crtc_check_fastset(old_crtc_state, new_crtc_state);
if (needs_modeset(new_crtc_state))
any_ms = true;
}
if (any_ms && !check_digital_port_conflicts(state)) {
DRM_DEBUG_KMS("rejecting conflicting digital port configuration\n");
ret = EINVAL;
goto fail;
}
ret = drm_dp_mst_atomic_check(&state->base);
if (ret)
goto fail;
any_ms |= state->cdclk.force_min_cdclk_changed;
ret = intel_atomic_check_planes(state, &any_ms);
if (ret)
goto fail;
if (any_ms) {
ret = intel_modeset_checks(state);
if (ret)
goto fail;
} else {
state->cdclk.logical = dev_priv->cdclk.logical;
}
ret = intel_atomic_check_crtcs(state);
if (ret)
goto fail;
intel_fbc_choose_crtc(dev_priv, state);
ret = calc_watermark_data(state);
if (ret)
goto fail;
ret = intel_bw_atomic_check(state);
if (ret)
goto fail;
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
if (!needs_modeset(new_crtc_state) &&
!new_crtc_state->update_pipe)
continue;
intel_dump_pipe_config(new_crtc_state, state,
needs_modeset(new_crtc_state) ?
"[modeset]" : "[fastset]");
}
return 0;
fail:
if (ret == -EDEADLK)
return ret;
/*
* FIXME would probably be nice to know which crtc specifically
* caused the failure, in cases where we can pinpoint it.
*/
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i)
intel_dump_pipe_config(new_crtc_state, state, "[failed]");
return ret;
}
static int intel_atomic_prepare_commit(struct intel_atomic_state *state)
{
return drm_atomic_helper_prepare_planes(state->base.dev,
&state->base);
}
u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct drm_vblank_crtc *vblank = &dev->vblank[drm_crtc_index(&crtc->base)];
if (!vblank->max_vblank_count)
return (u32)drm_crtc_accurate_vblank_count(&crtc->base);
return crtc->base.funcs->get_vblank_counter(&crtc->base);
}
void intel_crtc_arm_fifo_underrun(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
if (!IS_GEN(dev_priv, 2))
intel_set_cpu_fifo_underrun_reporting(dev_priv, crtc->pipe, true);
if (crtc_state->has_pch_encoder) {
enum pipe pch_transcoder =
intel_crtc_pch_transcoder(crtc);
intel_set_pch_fifo_underrun_reporting(dev_priv, pch_transcoder, true);
}
}
static void intel_pipe_fastset(const struct intel_crtc_state *old_crtc_state,
const struct intel_crtc_state *new_crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->base.crtc);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
/* drm_atomic_helper_update_legacy_modeset_state might not be called. */
crtc->base.mode = new_crtc_state->base.mode;
/*
* Update pipe size and adjust fitter if needed: the reason for this is
* that in compute_mode_changes we check the native mode (not the pfit
* mode) to see if we can flip rather than do a full mode set. In the
* fastboot case, we'll flip, but if we don't update the pipesrc and
* pfit state, we'll end up with a big fb scanned out into the wrong
* sized surface.
*/
intel_set_pipe_src_size(new_crtc_state);
/* on skylake this is done by detaching scalers */
if (INTEL_GEN(dev_priv) >= 9) {
skl_detach_scalers(new_crtc_state);
if (new_crtc_state->pch_pfit.enabled)
skylake_pfit_enable(new_crtc_state);
} else if (HAS_PCH_SPLIT(dev_priv)) {
if (new_crtc_state->pch_pfit.enabled)
ironlake_pfit_enable(new_crtc_state);
else if (old_crtc_state->pch_pfit.enabled)
ironlake_pfit_disable(old_crtc_state);
}
if (INTEL_GEN(dev_priv) >= 11)
icl_set_pipe_chicken(crtc);
}
static void commit_pipe_config(struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
bool modeset = needs_modeset(new_crtc_state);
/*
* During modesets pipe configuration was programmed as the
* CRTC was enabled.
*/
if (!modeset) {
if (new_crtc_state->base.color_mgmt_changed ||
new_crtc_state->update_pipe)
intel_color_commit(new_crtc_state);
if (INTEL_GEN(dev_priv) >= 9)
skl_detach_scalers(new_crtc_state);
if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
bdw_set_pipemisc(new_crtc_state);
if (new_crtc_state->update_pipe)
intel_pipe_fastset(old_crtc_state, new_crtc_state);
}
if (dev_priv->display.atomic_update_watermarks)
dev_priv->display.atomic_update_watermarks(state,
new_crtc_state);
}
static void intel_update_crtc(struct intel_crtc *crtc,
struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
bool modeset = needs_modeset(new_crtc_state);
struct intel_plane_state *new_plane_state =
intel_atomic_get_new_plane_state(state,
to_intel_plane(crtc->base.primary));
if (modeset) {
intel_crtc_update_active_timings(new_crtc_state);
dev_priv->display.crtc_enable(new_crtc_state, state);
/* vblanks work again, re-enable pipe CRC. */
intel_crtc_enable_pipe_crc(crtc);
} else {
intel_pre_plane_update(old_crtc_state, new_crtc_state);
if (new_crtc_state->update_pipe)
intel_encoders_update_pipe(crtc, new_crtc_state, state);
}
if (new_crtc_state->update_pipe && !new_crtc_state->enable_fbc)
intel_fbc_disable(crtc);
else if (new_plane_state)
intel_fbc_enable(crtc, new_crtc_state, new_plane_state);
/* Perform vblank evasion around commit operation */
intel_pipe_update_start(new_crtc_state);
commit_pipe_config(state, old_crtc_state, new_crtc_state);
if (INTEL_GEN(dev_priv) >= 9)
skl_update_planes_on_crtc(state, crtc);
else
i9xx_update_planes_on_crtc(state, crtc);
intel_pipe_update_end(new_crtc_state);
/*
* We usually enable FIFO underrun interrupts as part of the
* CRTC enable sequence during modesets. But when we inherit a
* valid pipe configuration from the BIOS we need to take care
* of enabling them on the CRTC's first fastset.
*/
if (new_crtc_state->update_pipe && !modeset &&
old_crtc_state->base.mode.private_flags & I915_MODE_FLAG_INHERITED)
intel_crtc_arm_fifo_underrun(crtc, new_crtc_state);
}
static struct intel_crtc *intel_get_slave_crtc(const struct intel_crtc_state *new_crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(new_crtc_state->base.crtc->dev);
enum transcoder slave_transcoder;
WARN_ON(!is_power_of_2(new_crtc_state->sync_mode_slaves_mask));
slave_transcoder = ffs(new_crtc_state->sync_mode_slaves_mask) - 1;
return intel_get_crtc_for_pipe(dev_priv,
(enum pipe)slave_transcoder);
}
static void intel_old_crtc_state_disables(struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state,
struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
intel_crtc_disable_planes(state, crtc);
/*
* We need to disable pipe CRC before disabling the pipe,
* or we race against vblank off.
*/
intel_crtc_disable_pipe_crc(crtc);
dev_priv->display.crtc_disable(old_crtc_state, state);
crtc->active = false;
intel_fbc_disable(crtc);
intel_disable_shared_dpll(old_crtc_state);
/*
* Underruns don't always raise interrupts,
* so check manually.
*/
intel_check_cpu_fifo_underruns(dev_priv);
intel_check_pch_fifo_underruns(dev_priv);
/* FIXME unify this for all platforms */
if (!new_crtc_state->base.active &&
!HAS_GMCH(dev_priv) &&
dev_priv->display.initial_watermarks)
dev_priv->display.initial_watermarks(state,
new_crtc_state);
}
static void intel_trans_port_sync_modeset_disables(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct intel_crtc *slave_crtc = intel_get_slave_crtc(new_crtc_state);
struct intel_crtc_state *new_slave_crtc_state =
intel_atomic_get_new_crtc_state(state, slave_crtc);
struct intel_crtc_state *old_slave_crtc_state =
intel_atomic_get_old_crtc_state(state, slave_crtc);
WARN_ON(!slave_crtc || !new_slave_crtc_state ||
!old_slave_crtc_state);
/* Disable Slave first */
intel_pre_plane_update(old_slave_crtc_state, new_slave_crtc_state);
if (old_slave_crtc_state->base.active)
intel_old_crtc_state_disables(state,
old_slave_crtc_state,
new_slave_crtc_state,
slave_crtc);
/* Disable Master */
intel_pre_plane_update(old_crtc_state, new_crtc_state);
if (old_crtc_state->base.active)
intel_old_crtc_state_disables(state,
old_crtc_state,
new_crtc_state,
crtc);
}
static void intel_commit_modeset_disables(struct intel_atomic_state *state)
{
struct intel_crtc_state *new_crtc_state, *old_crtc_state;
struct intel_crtc *crtc;
int i;
/*
* Disable CRTC/pipes in reverse order because some features(MST in
* TGL+) requires master and slave relationship between pipes, so it
* should always pick the lowest pipe as master as it will be enabled
* first and disable in the reverse order so the master will be the
* last one to be disabled.
*/
for_each_oldnew_intel_crtc_in_state_reverse(state, crtc, old_crtc_state,
new_crtc_state, i) {
if (!needs_modeset(new_crtc_state))
continue;
/* In case of Transcoder port Sync master slave CRTCs can be
* assigned in any order and we need to make sure that
* slave CRTCs are disabled first and then master CRTC since
* Slave vblanks are masked till Master Vblanks.
*/
if (is_trans_port_sync_mode(new_crtc_state)) {
if (is_trans_port_sync_master(new_crtc_state))
intel_trans_port_sync_modeset_disables(state,
crtc,
old_crtc_state,
new_crtc_state);
else
continue;
} else {
intel_pre_plane_update(old_crtc_state, new_crtc_state);
if (old_crtc_state->base.active)
intel_old_crtc_state_disables(state,
old_crtc_state,
new_crtc_state,
crtc);
}
}
}
static void intel_commit_modeset_enables(struct intel_atomic_state *state)
{
struct intel_crtc *crtc;
struct intel_crtc_state *old_crtc_state, *new_crtc_state;
int i;
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
if (!new_crtc_state->base.active)
continue;
intel_update_crtc(crtc, state, old_crtc_state,
new_crtc_state);
}
}
static void intel_crtc_enable_trans_port_sync(struct intel_crtc *crtc,
struct intel_atomic_state *state,
struct intel_crtc_state *new_crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
intel_crtc_update_active_timings(new_crtc_state);
dev_priv->display.crtc_enable(new_crtc_state, state);
intel_crtc_enable_pipe_crc(crtc);
}
static void intel_set_dp_tp_ctl_normal(struct intel_crtc *crtc,
struct intel_atomic_state *state)
{
struct drm_connector_state *conn_state;
struct drm_connector *conn;
struct intel_dp *intel_dp;
int i;
for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
if (conn_state->crtc == &crtc->base)
break;
}
intel_dp = enc_to_intel_dp(&intel_attached_encoder(conn)->base);
intel_dp_stop_link_train(intel_dp);
}
static void intel_post_crtc_enable_updates(struct intel_crtc *crtc,
struct intel_atomic_state *state)
{
struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
struct intel_crtc_state *old_crtc_state =
intel_atomic_get_old_crtc_state(state, crtc);
struct intel_plane_state *new_plane_state =
intel_atomic_get_new_plane_state(state,
to_intel_plane(crtc->base.primary));
bool modeset = needs_modeset(new_crtc_state);
if (new_crtc_state->update_pipe && !new_crtc_state->enable_fbc)
intel_fbc_disable(crtc);
else if (new_plane_state)
intel_fbc_enable(crtc, new_crtc_state, new_plane_state);
/* Perform vblank evasion around commit operation */
intel_pipe_update_start(new_crtc_state);
commit_pipe_config(state, old_crtc_state, new_crtc_state);
skl_update_planes_on_crtc(state, crtc);
intel_pipe_update_end(new_crtc_state);
/*
* We usually enable FIFO underrun interrupts as part of the
* CRTC enable sequence during modesets. But when we inherit a
* valid pipe configuration from the BIOS we need to take care
* of enabling them on the CRTC's first fastset.
*/
if (new_crtc_state->update_pipe && !modeset &&
old_crtc_state->base.mode.private_flags & I915_MODE_FLAG_INHERITED)
intel_crtc_arm_fifo_underrun(crtc, new_crtc_state);
}
static void intel_update_trans_port_sync_crtcs(struct intel_crtc *crtc,
struct intel_atomic_state *state,
struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state)
{
struct intel_crtc *slave_crtc = intel_get_slave_crtc(new_crtc_state);
struct intel_crtc_state *new_slave_crtc_state =
intel_atomic_get_new_crtc_state(state, slave_crtc);
struct intel_crtc_state *old_slave_crtc_state =
intel_atomic_get_old_crtc_state(state, slave_crtc);
WARN_ON(!slave_crtc || !new_slave_crtc_state ||
!old_slave_crtc_state);
DRM_DEBUG_KMS("Updating Transcoder Port Sync Master CRTC = %d %s and Slave CRTC %d %s\n",
crtc->base.base.id, crtc->base.name, slave_crtc->base.base.id,
slave_crtc->base.name);
/* Enable seq for slave with with DP_TP_CTL left Idle until the
* master is ready
*/
intel_crtc_enable_trans_port_sync(slave_crtc,
state,
new_slave_crtc_state);
/* Enable seq for master with with DP_TP_CTL left Idle */
intel_crtc_enable_trans_port_sync(crtc,
state,
new_crtc_state);
/* Set Slave's DP_TP_CTL to Normal */
intel_set_dp_tp_ctl_normal(slave_crtc,
state);
/* Set Master's DP_TP_CTL To Normal */
usleep_range(200, 400);
intel_set_dp_tp_ctl_normal(crtc,
state);
/* Now do the post crtc enable for all master and slaves */
intel_post_crtc_enable_updates(slave_crtc,
state);
intel_post_crtc_enable_updates(crtc,
state);
}
static void skl_commit_modeset_enables(struct intel_atomic_state *state)
{
struct drm_i915_private *dev_priv = to_i915(state->base.dev);
struct intel_crtc *crtc;
struct intel_crtc_state *old_crtc_state, *new_crtc_state;
unsigned int updated = 0;
bool progress;
int i;
u8 hw_enabled_slices = dev_priv->wm.skl_hw.ddb.enabled_slices;
u8 required_slices = state->wm_results.ddb.enabled_slices;
struct skl_ddb_entry entries[I915_MAX_PIPES] = {};
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i)
/* ignore allocations for crtc's that have been turned off. */
if (new_crtc_state->base.active)
entries[i] = old_crtc_state->wm.skl.ddb;
/* If 2nd DBuf slice required, enable it here */
if (INTEL_GEN(dev_priv) >= 11 && required_slices > hw_enabled_slices)
icl_dbuf_slices_update(dev_priv, required_slices);
/*
* Whenever the number of active pipes changes, we need to make sure we
* update the pipes in the right order so that their ddb allocations
* never overlap with eachother inbetween CRTC updates. Otherwise we'll
* cause pipe underruns and other bad stuff.
*/
do {
progress = false;
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
enum pipe pipe = crtc->pipe;
bool vbl_wait = false;
bool modeset = needs_modeset(new_crtc_state);
if (updated & BIT(crtc->pipe) || !new_crtc_state->base.active)
continue;
if (skl_ddb_allocation_overlaps(&new_crtc_state->wm.skl.ddb,
entries,
INTEL_NUM_PIPES(dev_priv), i))
continue;
updated |= BIT(pipe);
entries[i] = new_crtc_state->wm.skl.ddb;
/*
* If this is an already active pipe, it's DDB changed,
* and this isn't the last pipe that needs updating
* then we need to wait for a vblank to pass for the
* new ddb allocation to take effect.
*/
if (!skl_ddb_entry_equal(&new_crtc_state->wm.skl.ddb,
&old_crtc_state->wm.skl.ddb) &&
!modeset &&
state->wm_results.dirty_pipes != updated)
vbl_wait = true;
if (modeset && is_trans_port_sync_mode(new_crtc_state)) {
if (is_trans_port_sync_master(new_crtc_state))
intel_update_trans_port_sync_crtcs(crtc,
state,
old_crtc_state,
new_crtc_state);
else
continue;
} else {
intel_update_crtc(crtc, state, old_crtc_state,
new_crtc_state);
}
if (vbl_wait)
intel_wait_for_vblank(dev_priv, pipe);
progress = true;
}
} while (progress);
/* If 2nd DBuf slice is no more required disable it */
if (INTEL_GEN(dev_priv) >= 11 && required_slices < hw_enabled_slices)
icl_dbuf_slices_update(dev_priv, required_slices);
}
static void intel_atomic_helper_free_state(struct drm_i915_private *dev_priv)
{
struct intel_atomic_state *state, *next;
struct llist_node *freed;
freed = llist_del_all(&dev_priv->atomic_helper.free_list);
llist_for_each_entry_safe(state, next, freed, freed)
drm_atomic_state_put(&state->base);
}
static void intel_atomic_helper_free_state_worker(struct work_struct *work)
{
struct drm_i915_private *dev_priv =
container_of(work, typeof(*dev_priv), atomic_helper.free_work);
intel_atomic_helper_free_state(dev_priv);
}
static void intel_atomic_commit_fence_wait(struct intel_atomic_state *intel_state)
{
struct wait_queue_entry wait_fence, wait_reset;
struct drm_i915_private *dev_priv = to_i915(intel_state->base.dev);
init_wait_entry(&wait_fence, 0);
init_wait_entry(&wait_reset, 0);
for (;;) {
prepare_to_wait(&intel_state->commit_ready.wait,
&wait_fence, TASK_UNINTERRUPTIBLE);
prepare_to_wait(bit_waitqueue(&dev_priv->gt.reset.flags,
I915_RESET_MODESET),
&wait_reset, TASK_UNINTERRUPTIBLE);
if (i915_sw_fence_done(&intel_state->commit_ready) ||
test_bit(I915_RESET_MODESET, &dev_priv->gt.reset.flags))
break;
schedule();
}
finish_wait(&intel_state->commit_ready.wait, &wait_fence);
finish_wait(bit_waitqueue(&dev_priv->gt.reset.flags,
I915_RESET_MODESET),
&wait_reset);
}
static void intel_atomic_cleanup_work(struct work_struct *work)
{
struct drm_atomic_state *state =
container_of(work, struct drm_atomic_state, commit_work);
struct drm_i915_private *i915 = to_i915(state->dev);
drm_atomic_helper_cleanup_planes(&i915->drm, state);
drm_atomic_helper_commit_cleanup_done(state);
drm_atomic_state_put(state);
intel_atomic_helper_free_state(i915);
}
static void intel_atomic_commit_tail(struct intel_atomic_state *state)
{
struct drm_device *dev = state->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_state *new_crtc_state, *old_crtc_state;
struct intel_crtc *crtc;
u64 put_domains[I915_MAX_PIPES] = {};
intel_wakeref_t wakeref = 0;
int i;
intel_atomic_commit_fence_wait(state);
drm_atomic_helper_wait_for_dependencies(&state->base);
if (state->modeset)
wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_MODESET);
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
if (needs_modeset(new_crtc_state) ||
new_crtc_state->update_pipe) {
put_domains[crtc->pipe] =
modeset_get_crtc_power_domains(new_crtc_state);
}
}
intel_commit_modeset_disables(state);
/* FIXME: Eventually get rid of our crtc->config pointer */
for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
crtc->config = new_crtc_state;
if (state->modeset) {
drm_atomic_helper_update_legacy_modeset_state(dev, &state->base);
intel_set_cdclk_pre_plane_update(dev_priv,
&state->cdclk.actual,
&dev_priv->cdclk.actual,
state->cdclk.pipe);
/*
* SKL workaround: bspec recommends we disable the SAGV when we
* have more then one pipe enabled
*/
if (!intel_can_enable_sagv(state))
intel_disable_sagv(dev_priv);
intel_modeset_verify_disabled(dev_priv, state);
}
/* Complete the events for pipes that have now been disabled */
for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
bool modeset = needs_modeset(new_crtc_state);
/* Complete events for now disable pipes here. */
if (modeset && !new_crtc_state->base.active && new_crtc_state->base.event) {
spin_lock_irq(&dev->event_lock);
drm_crtc_send_vblank_event(&crtc->base, new_crtc_state->base.event);
spin_unlock_irq(&dev->event_lock);
new_crtc_state->base.event = NULL;
}
}
if (state->modeset)
intel_encoders_update_prepare(state);
/* Now enable the clocks, plane, pipe, and connectors that we set up. */
dev_priv->display.commit_modeset_enables(state);
if (state->modeset) {
intel_encoders_update_complete(state);
intel_set_cdclk_post_plane_update(dev_priv,
&state->cdclk.actual,
&dev_priv->cdclk.actual,
state->cdclk.pipe);
}
/* FIXME: We should call drm_atomic_helper_commit_hw_done() here
* already, but still need the state for the delayed optimization. To
* fix this:
* - wrap the optimization/post_plane_update stuff into a per-crtc work.
* - schedule that vblank worker _before_ calling hw_done
* - at the start of commit_tail, cancel it _synchrously
* - switch over to the vblank wait helper in the core after that since
* we don't need out special handling any more.
*/
drm_atomic_helper_wait_for_flip_done(dev, &state->base);
for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
if (new_crtc_state->base.active &&
!needs_modeset(new_crtc_state) &&
(new_crtc_state->base.color_mgmt_changed ||
new_crtc_state->update_pipe))
intel_color_load_luts(new_crtc_state);
}
/*
* Now that the vblank has passed, we can go ahead and program the
* optimal watermarks on platforms that need two-step watermark
* programming.
*
* TODO: Move this (and other cleanup) to an async worker eventually.
*/
for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i) {
if (dev_priv->display.optimize_watermarks)
dev_priv->display.optimize_watermarks(state,
new_crtc_state);
}
for_each_oldnew_intel_crtc_in_state(state, crtc, old_crtc_state, new_crtc_state, i) {
intel_post_plane_update(old_crtc_state);
if (put_domains[i])
modeset_put_power_domains(dev_priv, put_domains[i]);
intel_modeset_verify_crtc(crtc, state, old_crtc_state, new_crtc_state);
}
if (state->modeset)
intel_verify_planes(state);
if (state->modeset && intel_can_enable_sagv(state))
intel_enable_sagv(dev_priv);
drm_atomic_helper_commit_hw_done(&state->base);
if (state->modeset) {
/* As one of the primary mmio accessors, KMS has a high
* likelihood of triggering bugs in unclaimed access. After we
* finish modesetting, see if an error has been flagged, and if
* so enable debugging for the next modeset - and hope we catch
* the culprit.
*/
intel_uncore_arm_unclaimed_mmio_detection(&dev_priv->uncore);
intel_display_power_put(dev_priv, POWER_DOMAIN_MODESET, wakeref);
}
intel_runtime_pm_put(&dev_priv->runtime_pm, state->wakeref);
/*
* Defer the cleanup of the old state to a separate worker to not
* impede the current task (userspace for blocking modesets) that
* are executed inline. For out-of-line asynchronous modesets/flips,
* deferring to a new worker seems overkill, but we would place a
* schedule point (cond_resched()) here anyway to keep latencies
* down.
*/
INIT_WORK(&state->base.commit_work, intel_atomic_cleanup_work);
queue_work(system_highpri_wq, &state->base.commit_work);
}
static void intel_atomic_commit_work(struct work_struct *work)
{
struct intel_atomic_state *state =
container_of(work, struct intel_atomic_state, base.commit_work);
intel_atomic_commit_tail(state);
}
static int __i915_sw_fence_call
intel_atomic_commit_ready(struct i915_sw_fence *fence,
enum i915_sw_fence_notify notify)
{
struct intel_atomic_state *state =
container_of(fence, struct intel_atomic_state, commit_ready);
switch (notify) {
case FENCE_COMPLETE:
/* we do blocking waits in the worker, nothing to do here */
break;
case FENCE_FREE:
{
struct intel_atomic_helper *helper =
&to_i915(state->base.dev)->atomic_helper;
if (llist_add(&state->freed, &helper->free_list))
schedule_work(&helper->free_work);
break;
}
}
return NOTIFY_DONE;
}
static void intel_atomic_track_fbs(struct intel_atomic_state *state)
{
struct intel_plane_state *old_plane_state, *new_plane_state;
struct intel_plane *plane;
int i;
for_each_oldnew_intel_plane_in_state(state, plane, old_plane_state,
new_plane_state, i)
intel_frontbuffer_track(to_intel_frontbuffer(old_plane_state->base.fb),
to_intel_frontbuffer(new_plane_state->base.fb),
plane->frontbuffer_bit);
}
static void assert_global_state_locked(struct drm_i915_private *dev_priv)
{
struct intel_crtc *crtc;
for_each_intel_crtc(&dev_priv->drm, crtc)
drm_modeset_lock_assert_held(&crtc->base.mutex);
}
static int intel_atomic_commit(struct drm_device *dev,
struct drm_atomic_state *_state,
bool nonblock)
{
struct intel_atomic_state *state = to_intel_atomic_state(_state);
struct drm_i915_private *dev_priv = to_i915(dev);
int ret = 0;
state->wakeref = intel_runtime_pm_get(&dev_priv->runtime_pm);
drm_atomic_state_get(&state->base);
i915_sw_fence_init(&state->commit_ready,
intel_atomic_commit_ready);
/*
* The intel_legacy_cursor_update() fast path takes care
* of avoiding the vblank waits for simple cursor
* movement and flips. For cursor on/off and size changes,
* we want to perform the vblank waits so that watermark
* updates happen during the correct frames. Gen9+ have
* double buffered watermarks and so shouldn't need this.
*
* Unset state->legacy_cursor_update before the call to
* drm_atomic_helper_setup_commit() because otherwise
* drm_atomic_helper_wait_for_flip_done() is a noop and
* we get FIFO underruns because we didn't wait
* for vblank.
*
* FIXME doing watermarks and fb cleanup from a vblank worker
* (assuming we had any) would solve these problems.
*/
if (INTEL_GEN(dev_priv) < 9 && state->base.legacy_cursor_update) {
struct intel_crtc_state *new_crtc_state;
struct intel_crtc *crtc;
int i;
for_each_new_intel_crtc_in_state(state, crtc, new_crtc_state, i)
if (new_crtc_state->wm.need_postvbl_update ||
new_crtc_state->update_wm_post)
state->base.legacy_cursor_update = false;
}
ret = intel_atomic_prepare_commit(state);
if (ret) {
DRM_DEBUG_ATOMIC("Preparing state failed with %i\n", ret);
i915_sw_fence_commit(&state->commit_ready);
intel_runtime_pm_put(&dev_priv->runtime_pm, state->wakeref);
return ret;
}
ret = drm_atomic_helper_setup_commit(&state->base, nonblock);
if (!ret)
ret = drm_atomic_helper_swap_state(&state->base, true);
if (ret) {
i915_sw_fence_commit(&state->commit_ready);
drm_atomic_helper_cleanup_planes(dev, &state->base);
intel_runtime_pm_put(&dev_priv->runtime_pm, state->wakeref);
return ret;
}
dev_priv->wm.distrust_bios_wm = false;
intel_shared_dpll_swap_state(state);
intel_atomic_track_fbs(state);
if (state->global_state_changed) {
assert_global_state_locked(dev_priv);
memcpy(dev_priv->min_cdclk, state->min_cdclk,
sizeof(state->min_cdclk));
memcpy(dev_priv->min_voltage_level, state->min_voltage_level,
sizeof(state->min_voltage_level));
dev_priv->active_pipes = state->active_pipes;
dev_priv->cdclk.force_min_cdclk = state->cdclk.force_min_cdclk;
intel_cdclk_swap_state(state);
}
drm_atomic_state_get(&state->base);
INIT_WORK(&state->base.commit_work, intel_atomic_commit_work);
i915_sw_fence_commit(&state->commit_ready);
if (nonblock && state->modeset) {
queue_work(dev_priv->modeset_wq, &state->base.commit_work);
} else if (nonblock) {
queue_work(dev_priv->flip_wq, &state->base.commit_work);
} else {
if (state->modeset)
flush_workqueue(dev_priv->modeset_wq);
intel_atomic_commit_tail(state);
}
return 0;
}
struct wait_rps_boost {
struct wait_queue_entry wait;
struct drm_crtc *crtc;
struct i915_request *request;
};
static int do_rps_boost(struct wait_queue_entry *_wait,
unsigned mode, int sync, void *key)
{
struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
struct i915_request *rq = wait->request;
/*
* If we missed the vblank, but the request is already running it
* is reasonable to assume that it will complete before the next
* vblank without our intervention, so leave RPS alone.
*/
if (!i915_request_started(rq))
gen6_rps_boost(rq);
i915_request_put(rq);
drm_crtc_vblank_put(wait->crtc);
list_del(&wait->wait.entry);
kfree(wait);
return 1;
}
static void add_rps_boost_after_vblank(struct drm_crtc *crtc,
struct dma_fence *fence)
{
struct wait_rps_boost *wait;
if (!dma_fence_is_i915(fence))
return;
if (INTEL_GEN(to_i915(crtc->dev)) < 6)
return;
if (drm_crtc_vblank_get(crtc))
return;
wait = kmalloc(sizeof(*wait), GFP_KERNEL);
if (!wait) {
drm_crtc_vblank_put(crtc);
return;
}
wait->request = to_request(dma_fence_get(fence));
wait->crtc = crtc;
wait->wait.func = do_rps_boost;
wait->wait.flags = 0;
add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
}
static int intel_plane_pin_fb(struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->base.plane);
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
struct drm_framebuffer *fb = plane_state->base.fb;
struct i915_vma *vma;
if (plane->id == PLANE_CURSOR &&
INTEL_INFO(dev_priv)->display.cursor_needs_physical) {
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
const int align = intel_cursor_alignment(dev_priv);
int err;
err = i915_gem_object_attach_phys(obj, align);
if (err)
return err;
}
vma = intel_pin_and_fence_fb_obj(fb,
&plane_state->view,
intel_plane_uses_fence(plane_state),
&plane_state->flags);
if (IS_ERR(vma))
return PTR_ERR(vma);
plane_state->vma = vma;
return 0;
}
static void intel_plane_unpin_fb(struct intel_plane_state *old_plane_state)
{
struct i915_vma *vma;
vma = fetch_and_zero(&old_plane_state->vma);
if (vma)
intel_unpin_fb_vma(vma, old_plane_state->flags);
}
static void fb_obj_bump_render_priority(struct drm_i915_gem_object *obj)
{
struct i915_sched_attr attr = {
.priority = I915_USER_PRIORITY(I915_PRIORITY_DISPLAY),
};
i915_gem_object_wait_priority(obj, 0, &attr);
}
/**
* intel_prepare_plane_fb - Prepare fb for usage on plane
* @plane: drm plane to prepare for
* @_new_plane_state: the plane state being prepared
*
* Prepares a framebuffer for usage on a display plane. Generally this
* involves pinning the underlying object and updating the frontbuffer tracking
* bits. Some older platforms need special physical address handling for
* cursor planes.
*
* Returns 0 on success, negative error code on failure.
*/
int
intel_prepare_plane_fb(struct drm_plane *plane,
struct drm_plane_state *_new_plane_state)
{
struct intel_plane_state *new_plane_state =
to_intel_plane_state(_new_plane_state);
struct intel_atomic_state *intel_state =
to_intel_atomic_state(new_plane_state->base.state);
struct drm_i915_private *dev_priv = to_i915(plane->dev);
struct drm_framebuffer *fb = new_plane_state->base.fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->state->fb);
int ret;
if (old_obj) {
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(intel_state,
to_intel_crtc(plane->state->crtc));
/* Big Hammer, we also need to ensure that any pending
* MI_WAIT_FOR_EVENT inside a user batch buffer on the
* current scanout is retired before unpinning the old
* framebuffer. Note that we rely on userspace rendering
* into the buffer attached to the pipe they are waiting
* on. If not, userspace generates a GPU hang with IPEHR
* point to the MI_WAIT_FOR_EVENT.
*
* This should only fail upon a hung GPU, in which case we
* can safely continue.
*/
if (needs_modeset(crtc_state)) {
ret = i915_sw_fence_await_reservation(&intel_state->commit_ready,
old_obj->base.resv, NULL,
false, 0,
GFP_KERNEL);
if (ret < 0)
return ret;
}
}
if (new_plane_state->base.fence) { /* explicit fencing */
ret = i915_sw_fence_await_dma_fence(&intel_state->commit_ready,
new_plane_state->base.fence,
I915_FENCE_TIMEOUT,
GFP_KERNEL);
if (ret < 0)
return ret;
}
if (!obj)
return 0;
ret = i915_gem_object_pin_pages(obj);
if (ret)
return ret;
ret = intel_plane_pin_fb(new_plane_state);
i915_gem_object_unpin_pages(obj);
if (ret)
return ret;
fb_obj_bump_render_priority(obj);
intel_frontbuffer_flush(obj->frontbuffer, ORIGIN_DIRTYFB);
if (!new_plane_state->base.fence) { /* implicit fencing */
struct dma_fence *fence;
ret = i915_sw_fence_await_reservation(&intel_state->commit_ready,
obj->base.resv, NULL,
false, I915_FENCE_TIMEOUT,
GFP_KERNEL);
if (ret < 0)
return ret;
fence = dma_resv_get_excl_rcu(obj->base.resv);
if (fence) {
add_rps_boost_after_vblank(new_plane_state->base.crtc,
fence);
dma_fence_put(fence);
}
} else {
add_rps_boost_after_vblank(new_plane_state->base.crtc,
new_plane_state->base.fence);
}
/*
* We declare pageflips to be interactive and so merit a small bias
* towards upclocking to deliver the frame on time. By only changing
* the RPS thresholds to sample more regularly and aim for higher
* clocks we can hopefully deliver low power workloads (like kodi)
* that are not quite steady state without resorting to forcing
* maximum clocks following a vblank miss (see do_rps_boost()).
*/
if (!intel_state->rps_interactive) {
intel_rps_mark_interactive(dev_priv, true);
intel_state->rps_interactive = true;
}
return 0;
}
/**
* intel_cleanup_plane_fb - Cleans up an fb after plane use
* @plane: drm plane to clean up for
* @_old_plane_state: the state from the previous modeset
*
* Cleans up a framebuffer that has just been removed from a plane.
*/
void
intel_cleanup_plane_fb(struct drm_plane *plane,
struct drm_plane_state *_old_plane_state)
{
struct intel_plane_state *old_plane_state =
to_intel_plane_state(_old_plane_state);
struct intel_atomic_state *intel_state =
to_intel_atomic_state(old_plane_state->base.state);
struct drm_i915_private *dev_priv = to_i915(plane->dev);
if (intel_state->rps_interactive) {
intel_rps_mark_interactive(dev_priv, false);
intel_state->rps_interactive = false;
}
/* Should only be called after a successful intel_prepare_plane_fb()! */
intel_plane_unpin_fb(old_plane_state);
}
/**
* intel_plane_destroy - destroy a plane
* @plane: plane to destroy
*
* Common destruction function for all types of planes (primary, cursor,
* sprite).
*/
void intel_plane_destroy(struct drm_plane *plane)
{
drm_plane_cleanup(plane);
kfree(to_intel_plane(plane));
}
static bool i8xx_plane_format_mod_supported(struct drm_plane *_plane,
u32 format, u64 modifier)
{
switch (modifier) {
case DRM_FORMAT_MOD_LINEAR:
case I915_FORMAT_MOD_X_TILED:
break;
default:
return false;
}
switch (format) {
case DRM_FORMAT_C8:
case DRM_FORMAT_RGB565:
case DRM_FORMAT_XRGB1555:
case DRM_FORMAT_XRGB8888:
return modifier == DRM_FORMAT_MOD_LINEAR ||
modifier == I915_FORMAT_MOD_X_TILED;
default:
return false;
}
}
static bool i965_plane_format_mod_supported(struct drm_plane *_plane,
u32 format, u64 modifier)
{
switch (modifier) {
case DRM_FORMAT_MOD_LINEAR:
case I915_FORMAT_MOD_X_TILED:
break;
default:
return false;
}
switch (format) {
case DRM_FORMAT_C8:
case DRM_FORMAT_RGB565:
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_XRGB2101010:
case DRM_FORMAT_XBGR2101010:
case DRM_FORMAT_XBGR16161616F:
return modifier == DRM_FORMAT_MOD_LINEAR ||
modifier == I915_FORMAT_MOD_X_TILED;
default:
return false;
}
}
static bool intel_cursor_format_mod_supported(struct drm_plane *_plane,
u32 format, u64 modifier)
{
return modifier == DRM_FORMAT_MOD_LINEAR &&
format == DRM_FORMAT_ARGB8888;
}
static const struct drm_plane_funcs i965_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = intel_plane_destroy,
.atomic_duplicate_state = intel_plane_duplicate_state,
.atomic_destroy_state = intel_plane_destroy_state,
.format_mod_supported = i965_plane_format_mod_supported,
};
static const struct drm_plane_funcs i8xx_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = intel_plane_destroy,
.atomic_duplicate_state = intel_plane_duplicate_state,
.atomic_destroy_state = intel_plane_destroy_state,
.format_mod_supported = i8xx_plane_format_mod_supported,
};
static int
intel_legacy_cursor_update(struct drm_plane *_plane,
struct drm_crtc *_crtc,
struct drm_framebuffer *fb,
int crtc_x, int crtc_y,
unsigned int crtc_w, unsigned int crtc_h,
u32 src_x, u32 src_y,
u32 src_w, u32 src_h,
struct drm_modeset_acquire_ctx *ctx)
{
struct intel_plane *plane = to_intel_plane(_plane);
struct intel_crtc *crtc = to_intel_crtc(_crtc);
struct intel_plane_state *old_plane_state =
to_intel_plane_state(plane->base.state);
struct intel_plane_state *new_plane_state;
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
struct intel_crtc_state *new_crtc_state;
int ret;
/*
* When crtc is inactive or there is a modeset pending,
* wait for it to complete in the slowpath
*/
if (!crtc_state->base.active || needs_modeset(crtc_state) ||
crtc_state->update_pipe)
goto slow;
/*
* Don't do an async update if there is an outstanding commit modifying
* the plane. This prevents our async update's changes from getting
* overridden by a previous synchronous update's state.
*/
if (old_plane_state->base.commit &&
!try_wait_for_completion(&old_plane_state->base.commit->hw_done))
goto slow;
/*
* If any parameters change that may affect watermarks,
* take the slowpath. Only changing fb or position should be
* in the fastpath.
*/
if (old_plane_state->base.crtc != &crtc->base ||
old_plane_state->base.src_w != src_w ||
old_plane_state->base.src_h != src_h ||
old_plane_state->base.crtc_w != crtc_w ||
old_plane_state->base.crtc_h != crtc_h ||
!old_plane_state->base.fb != !fb)
goto slow;
new_plane_state = to_intel_plane_state(intel_plane_duplicate_state(&plane->base));
if (!new_plane_state)
return -ENOMEM;
new_crtc_state = to_intel_crtc_state(intel_crtc_duplicate_state(&crtc->base));
if (!new_crtc_state) {
ret = -ENOMEM;
goto out_free;
}
drm_atomic_set_fb_for_plane(&new_plane_state->base, fb);
new_plane_state->base.src_x = src_x;
new_plane_state->base.src_y = src_y;
new_plane_state->base.src_w = src_w;
new_plane_state->base.src_h = src_h;
new_plane_state->base.crtc_x = crtc_x;
new_plane_state->base.crtc_y = crtc_y;
new_plane_state->base.crtc_w = crtc_w;
new_plane_state->base.crtc_h = crtc_h;
ret = intel_plane_atomic_check_with_state(crtc_state, new_crtc_state,
old_plane_state, new_plane_state);
if (ret)
goto out_free;
ret = intel_plane_pin_fb(new_plane_state);
if (ret)
goto out_free;
intel_frontbuffer_flush(to_intel_frontbuffer(new_plane_state->base.fb), ORIGIN_FLIP);
intel_frontbuffer_track(to_intel_frontbuffer(old_plane_state->base.fb),
to_intel_frontbuffer(new_plane_state->base.fb),
plane->frontbuffer_bit);
/* Swap plane state */
plane->base.state = &new_plane_state->base;
/*
* We cannot swap crtc_state as it may be in use by an atomic commit or
* page flip that's running simultaneously. If we swap crtc_state and
* destroy the old state, we will cause a use-after-free there.
*
* Only update active_planes, which is needed for our internal
* bookkeeping. Either value will do the right thing when updating
* planes atomically. If the cursor was part of the atomic update then
* we would have taken the slowpath.
*/
crtc_state->active_planes = new_crtc_state->active_planes;
if (new_plane_state->base.visible)
intel_update_plane(plane, crtc_state, new_plane_state);
else
intel_disable_plane(plane, crtc_state);
intel_plane_unpin_fb(old_plane_state);
out_free:
if (new_crtc_state)
intel_crtc_destroy_state(&crtc->base, &new_crtc_state->base);
if (ret)
intel_plane_destroy_state(&plane->base, &new_plane_state->base);
else
intel_plane_destroy_state(&plane->base, &old_plane_state->base);
return ret;
slow:
return drm_atomic_helper_update_plane(&plane->base, &crtc->base, fb,
crtc_x, crtc_y, crtc_w, crtc_h,
src_x, src_y, src_w, src_h, ctx);
}
static const struct drm_plane_funcs intel_cursor_plane_funcs = {
.update_plane = intel_legacy_cursor_update,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = intel_plane_destroy,
.atomic_duplicate_state = intel_plane_duplicate_state,
.atomic_destroy_state = intel_plane_destroy_state,
.format_mod_supported = intel_cursor_format_mod_supported,
};
static bool i9xx_plane_has_fbc(struct drm_i915_private *dev_priv,
enum i9xx_plane_id i9xx_plane)
{
if (!HAS_FBC(dev_priv))
return false;
if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
return i9xx_plane == PLANE_A; /* tied to pipe A */
else if (IS_IVYBRIDGE(dev_priv))
return i9xx_plane == PLANE_A || i9xx_plane == PLANE_B ||
i9xx_plane == PLANE_C;
else if (INTEL_GEN(dev_priv) >= 4)
return i9xx_plane == PLANE_A || i9xx_plane == PLANE_B;
else
return i9xx_plane == PLANE_A;
}
static struct intel_plane *
intel_primary_plane_create(struct drm_i915_private *dev_priv, enum pipe pipe)
{
struct intel_plane *plane;
const struct drm_plane_funcs *plane_funcs;
unsigned int supported_rotations;
unsigned int possible_crtcs;
const u64 *modifiers;
const u32 *formats;
int num_formats;
int ret, zpos;
if (INTEL_GEN(dev_priv) >= 9)
return skl_universal_plane_create(dev_priv, pipe,
PLANE_PRIMARY);
plane = intel_plane_alloc();
if (IS_ERR(plane))
return plane;
plane->pipe = pipe;
/*
* On gen2/3 only plane A can do FBC, but the panel fitter and LVDS
* port is hooked to pipe B. Hence we want plane A feeding pipe B.
*/
if (HAS_FBC(dev_priv) && INTEL_GEN(dev_priv) < 4)
plane->i9xx_plane = (enum i9xx_plane_id) !pipe;
else
plane->i9xx_plane = (enum i9xx_plane_id) pipe;
plane->id = PLANE_PRIMARY;
plane->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, plane->id);
plane->has_fbc = i9xx_plane_has_fbc(dev_priv, plane->i9xx_plane);
if (plane->has_fbc) {
struct intel_fbc *fbc = &dev_priv->fbc;
fbc->possible_framebuffer_bits |= plane->frontbuffer_bit;
}
if (INTEL_GEN(dev_priv) >= 4) {
/*
* WaFP16GammaEnabling:ivb
* "Workaround : When using the 64-bit format, the plane
* output on each color channel has one quarter amplitude.
* It can be brought up to full amplitude by using pipe
* gamma correction or pipe color space conversion to
* multiply the plane output by four."
*
* There is no dedicated plane gamma for the primary plane,
* and using the pipe gamma/csc could conflict with other
* planes, so we choose not to expose fp16 on IVB primary
* planes. HSW primary planes no longer have this problem.
*/
if (IS_IVYBRIDGE(dev_priv)) {
formats = ivb_primary_formats;
num_formats = ARRAY_SIZE(ivb_primary_formats);
} else {
formats = i965_primary_formats;
num_formats = ARRAY_SIZE(i965_primary_formats);
}
modifiers = i9xx_format_modifiers;
plane->max_stride = i9xx_plane_max_stride;
plane->update_plane = i9xx_update_plane;
plane->disable_plane = i9xx_disable_plane;
plane->get_hw_state = i9xx_plane_get_hw_state;
plane->check_plane = i9xx_plane_check;
if (IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv))
plane->min_cdclk = hsw_plane_min_cdclk;
else if (IS_IVYBRIDGE(dev_priv))
plane->min_cdclk = ivb_plane_min_cdclk;
else if (IS_CHERRYVIEW(dev_priv) || IS_VALLEYVIEW(dev_priv))
plane->min_cdclk = vlv_plane_min_cdclk;
else
plane->min_cdclk = i9xx_plane_min_cdclk;
plane_funcs = &i965_plane_funcs;
} else {
formats = i8xx_primary_formats;
num_formats = ARRAY_SIZE(i8xx_primary_formats);
modifiers = i9xx_format_modifiers;
plane->max_stride = i9xx_plane_max_stride;
plane->update_plane = i9xx_update_plane;
plane->disable_plane = i9xx_disable_plane;
plane->get_hw_state = i9xx_plane_get_hw_state;
plane->check_plane = i9xx_plane_check;
plane->min_cdclk = i9xx_plane_min_cdclk;
plane_funcs = &i8xx_plane_funcs;
}
possible_crtcs = BIT(pipe);
if (INTEL_GEN(dev_priv) >= 5 || IS_G4X(dev_priv))
ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
possible_crtcs, plane_funcs,
formats, num_formats, modifiers,
DRM_PLANE_TYPE_PRIMARY,
"primary %c", pipe_name(pipe));
else
ret = drm_universal_plane_init(&dev_priv->drm, &plane->base,
possible_crtcs, plane_funcs,
formats, num_formats, modifiers,
DRM_PLANE_TYPE_PRIMARY,
"plane %c",
plane_name(plane->i9xx_plane));
if (ret)
goto fail;
if (IS_CHERRYVIEW(dev_priv) && pipe == PIPE_B) {
supported_rotations =
DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
DRM_MODE_REFLECT_X;
} else if (INTEL_GEN(dev_priv) >= 4) {
supported_rotations =
DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180;
} else {
supported_rotations = DRM_MODE_ROTATE_0;
}
if (INTEL_GEN(dev_priv) >= 4)
drm_plane_create_rotation_property(&plane->base,
DRM_MODE_ROTATE_0,
supported_rotations);
zpos = 0;
drm_plane_create_zpos_immutable_property(&plane->base, zpos);
drm_plane_helper_add(&plane->base, &intel_plane_helper_funcs);
return plane;
fail:
intel_plane_free(plane);
return ERR_PTR(ret);
}
static struct intel_plane *
intel_cursor_plane_create(struct drm_i915_private *dev_priv,
enum pipe pipe)
{
unsigned int possible_crtcs;
struct intel_plane *cursor;
int ret, zpos;
cursor = intel_plane_alloc();
if (IS_ERR(cursor))
return cursor;
cursor->pipe = pipe;
cursor->i9xx_plane = (enum i9xx_plane_id) pipe;
cursor->id = PLANE_CURSOR;
cursor->frontbuffer_bit = INTEL_FRONTBUFFER(pipe, cursor->id);
if (IS_I845G(dev_priv) || IS_I865G(dev_priv)) {
cursor->max_stride = i845_cursor_max_stride;
cursor->update_plane = i845_update_cursor;
cursor->disable_plane = i845_disable_cursor;
cursor->get_hw_state = i845_cursor_get_hw_state;
cursor->check_plane = i845_check_cursor;
} else {
cursor->max_stride = i9xx_cursor_max_stride;
cursor->update_plane = i9xx_update_cursor;
cursor->disable_plane = i9xx_disable_cursor;
cursor->get_hw_state = i9xx_cursor_get_hw_state;
cursor->check_plane = i9xx_check_cursor;
}
cursor->cursor.base = ~0;
cursor->cursor.cntl = ~0;
if (IS_I845G(dev_priv) || IS_I865G(dev_priv) || HAS_CUR_FBC(dev_priv))
cursor->cursor.size = ~0;
possible_crtcs = BIT(pipe);
ret = drm_universal_plane_init(&dev_priv->drm, &cursor->base,
possible_crtcs, &intel_cursor_plane_funcs,
intel_cursor_formats,
ARRAY_SIZE(intel_cursor_formats),
cursor_format_modifiers,
DRM_PLANE_TYPE_CURSOR,
"cursor %c", pipe_name(pipe));
if (ret)
goto fail;
if (INTEL_GEN(dev_priv) >= 4)
drm_plane_create_rotation_property(&cursor->base,
DRM_MODE_ROTATE_0,
DRM_MODE_ROTATE_0 |
DRM_MODE_ROTATE_180);
zpos = RUNTIME_INFO(dev_priv)->num_sprites[pipe] + 1;
drm_plane_create_zpos_immutable_property(&cursor->base, zpos);
drm_plane_helper_add(&cursor->base, &intel_plane_helper_funcs);
return cursor;
fail:
intel_plane_free(cursor);
return ERR_PTR(ret);
}
static void intel_crtc_init_scalers(struct intel_crtc *crtc,
struct intel_crtc_state *crtc_state)
{
struct intel_crtc_scaler_state *scaler_state =
&crtc_state->scaler_state;
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
int i;
crtc->num_scalers = RUNTIME_INFO(dev_priv)->num_scalers[crtc->pipe];
if (!crtc->num_scalers)
return;
for (i = 0; i < crtc->num_scalers; i++) {
struct intel_scaler *scaler = &scaler_state->scalers[i];
scaler->in_use = 0;
scaler->mode = 0;
}
scaler_state->scaler_id = -1;
}
#define INTEL_CRTC_FUNCS \
.gamma_set = drm_atomic_helper_legacy_gamma_set, \
.set_config = drm_atomic_helper_set_config, \
.destroy = intel_crtc_destroy, \
.page_flip = drm_atomic_helper_page_flip, \
.atomic_duplicate_state = intel_crtc_duplicate_state, \
.atomic_destroy_state = intel_crtc_destroy_state, \
.set_crc_source = intel_crtc_set_crc_source, \
.verify_crc_source = intel_crtc_verify_crc_source, \
.get_crc_sources = intel_crtc_get_crc_sources
static const struct drm_crtc_funcs bdw_crtc_funcs = {
INTEL_CRTC_FUNCS,
.get_vblank_counter = g4x_get_vblank_counter,
.enable_vblank = bdw_enable_vblank,
.disable_vblank = bdw_disable_vblank,
};
static const struct drm_crtc_funcs ilk_crtc_funcs = {
INTEL_CRTC_FUNCS,
.get_vblank_counter = g4x_get_vblank_counter,
.enable_vblank = ilk_enable_vblank,
.disable_vblank = ilk_disable_vblank,
};
static const struct drm_crtc_funcs g4x_crtc_funcs = {
INTEL_CRTC_FUNCS,
.get_vblank_counter = g4x_get_vblank_counter,
.enable_vblank = i965_enable_vblank,
.disable_vblank = i965_disable_vblank,
};
static const struct drm_crtc_funcs i965_crtc_funcs = {
INTEL_CRTC_FUNCS,
.get_vblank_counter = i915_get_vblank_counter,
.enable_vblank = i965_enable_vblank,
.disable_vblank = i965_disable_vblank,
};
static const struct drm_crtc_funcs i915gm_crtc_funcs = {
INTEL_CRTC_FUNCS,
.get_vblank_counter = i915_get_vblank_counter,
.enable_vblank = i915gm_enable_vblank,
.disable_vblank = i915gm_disable_vblank,
};
static const struct drm_crtc_funcs i915_crtc_funcs = {
INTEL_CRTC_FUNCS,
.get_vblank_counter = i915_get_vblank_counter,
.enable_vblank = i8xx_enable_vblank,
.disable_vblank = i8xx_disable_vblank,
};
static const struct drm_crtc_funcs i8xx_crtc_funcs = {
INTEL_CRTC_FUNCS,
/* no hw vblank counter */
.enable_vblank = i8xx_enable_vblank,
.disable_vblank = i8xx_disable_vblank,
};
static int intel_crtc_init(struct drm_i915_private *dev_priv, enum pipe pipe)
{
const struct drm_crtc_funcs *funcs;
struct intel_crtc *intel_crtc;
struct intel_crtc_state *crtc_state = NULL;
struct intel_plane *primary = NULL;
struct intel_plane *cursor = NULL;
int sprite, ret;
intel_crtc = kzalloc(sizeof(*intel_crtc), GFP_KERNEL);
if (!intel_crtc)
return -ENOMEM;
crtc_state = kzalloc(sizeof(*crtc_state), GFP_KERNEL);
if (!crtc_state) {
ret = -ENOMEM;
goto fail;
}
__drm_atomic_helper_crtc_reset(&intel_crtc->base, &crtc_state->base);
intel_crtc->config = crtc_state;
primary = intel_primary_plane_create(dev_priv, pipe);
if (IS_ERR(primary)) {
ret = PTR_ERR(primary);
goto fail;
}
intel_crtc->plane_ids_mask |= BIT(primary->id);
for_each_sprite(dev_priv, pipe, sprite) {
struct intel_plane *plane;
plane = intel_sprite_plane_create(dev_priv, pipe, sprite);
if (IS_ERR(plane)) {
ret = PTR_ERR(plane);
goto fail;
}
intel_crtc->plane_ids_mask |= BIT(plane->id);
}
cursor = intel_cursor_plane_create(dev_priv, pipe);
if (IS_ERR(cursor)) {
ret = PTR_ERR(cursor);
goto fail;
}
intel_crtc->plane_ids_mask |= BIT(cursor->id);
if (HAS_GMCH(dev_priv)) {
if (IS_CHERRYVIEW(dev_priv) ||
IS_VALLEYVIEW(dev_priv) || IS_G4X(dev_priv))
funcs = &g4x_crtc_funcs;
else if (IS_GEN(dev_priv, 4))
funcs = &i965_crtc_funcs;
else if (IS_I945GM(dev_priv) || IS_I915GM(dev_priv))
funcs = &i915gm_crtc_funcs;
else if (IS_GEN(dev_priv, 3))
funcs = &i915_crtc_funcs;
else
funcs = &i8xx_crtc_funcs;
} else {
if (INTEL_GEN(dev_priv) >= 8)
funcs = &bdw_crtc_funcs;
else
funcs = &ilk_crtc_funcs;
}
ret = drm_crtc_init_with_planes(&dev_priv->drm, &intel_crtc->base,
&primary->base, &cursor->base,
funcs, "pipe %c", pipe_name(pipe));
if (ret)
goto fail;
intel_crtc->pipe = pipe;
/* initialize shared scalers */
intel_crtc_init_scalers(intel_crtc, crtc_state);
BUG_ON(pipe >= ARRAY_SIZE(dev_priv->pipe_to_crtc_mapping) ||
dev_priv->pipe_to_crtc_mapping[pipe] != NULL);
dev_priv->pipe_to_crtc_mapping[pipe] = intel_crtc;
if (INTEL_GEN(dev_priv) < 9) {
enum i9xx_plane_id i9xx_plane = primary->i9xx_plane;
BUG_ON(i9xx_plane >= ARRAY_SIZE(dev_priv->plane_to_crtc_mapping) ||
dev_priv->plane_to_crtc_mapping[i9xx_plane] != NULL);
dev_priv->plane_to_crtc_mapping[i9xx_plane] = intel_crtc;
}
intel_color_init(intel_crtc);
WARN_ON(drm_crtc_index(&intel_crtc->base) != intel_crtc->pipe);
return 0;
fail:
/*
* drm_mode_config_cleanup() will free up any
* crtcs/planes already initialized.
*/
kfree(crtc_state);
kfree(intel_crtc);
return ret;
}
int intel_get_pipe_from_crtc_id_ioctl(struct drm_device *dev, void *data,
struct drm_file *file)
{
struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
struct drm_crtc *drmmode_crtc;
struct intel_crtc *crtc;
drmmode_crtc = drm_crtc_find(dev, file, pipe_from_crtc_id->crtc_id);
if (!drmmode_crtc)
return -ENOENT;
crtc = to_intel_crtc(drmmode_crtc);
pipe_from_crtc_id->pipe = crtc->pipe;
return 0;
}
static u32 intel_encoder_possible_clones(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
struct intel_encoder *source_encoder;
u32 possible_clones = 0;
for_each_intel_encoder(dev, source_encoder) {
if (encoders_cloneable(encoder, source_encoder))
possible_clones |= drm_encoder_mask(&source_encoder->base);
}
return possible_clones;
}
static u32 intel_encoder_possible_crtcs(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
struct intel_crtc *crtc;
u32 possible_crtcs = 0;
for_each_intel_crtc(dev, crtc) {
if (encoder->crtc_mask & BIT(crtc->pipe))
possible_crtcs |= drm_crtc_mask(&crtc->base);
}
return possible_crtcs;
}
static bool ilk_has_edp_a(struct drm_i915_private *dev_priv)
{
if (!IS_MOBILE(dev_priv))
return false;
if ((I915_READ(DP_A) & DP_DETECTED) == 0)
return false;
if (IS_GEN(dev_priv, 5) && (I915_READ(FUSE_STRAP) & ILK_eDP_A_DISABLE))
return false;
return true;
}
static bool intel_ddi_crt_present(struct drm_i915_private *dev_priv)
{
if (INTEL_GEN(dev_priv) >= 9)
return false;
if (IS_HSW_ULT(dev_priv) || IS_BDW_ULT(dev_priv))
return false;
if (HAS_PCH_LPT_H(dev_priv) &&
I915_READ(SFUSE_STRAP) & SFUSE_STRAP_CRT_DISABLED)
return false;
/* DDI E can't be used if DDI A requires 4 lanes */
if (I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_A_4_LANES)
return false;
if (!dev_priv->vbt.int_crt_support)
return false;
return true;
}
void intel_pps_unlock_regs_wa(struct drm_i915_private *dev_priv)
{
int pps_num;
int pps_idx;
if (HAS_DDI(dev_priv))
return;
/*
* This w/a is needed at least on CPT/PPT, but to be sure apply it
* everywhere where registers can be write protected.
*/
if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
pps_num = 2;
else
pps_num = 1;
for (pps_idx = 0; pps_idx < pps_num; pps_idx++) {
u32 val = I915_READ(PP_CONTROL(pps_idx));
val = (val & ~PANEL_UNLOCK_MASK) | PANEL_UNLOCK_REGS;
I915_WRITE(PP_CONTROL(pps_idx), val);
}
}
static void intel_pps_init(struct drm_i915_private *dev_priv)
{
if (HAS_PCH_SPLIT(dev_priv) || IS_GEN9_LP(dev_priv))
dev_priv->pps_mmio_base = PCH_PPS_BASE;
else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv))
dev_priv->pps_mmio_base = VLV_PPS_BASE;
else
dev_priv->pps_mmio_base = PPS_BASE;
intel_pps_unlock_regs_wa(dev_priv);
}
static void intel_setup_outputs(struct drm_i915_private *dev_priv)
{
struct intel_encoder *encoder;
bool dpd_is_edp = false;
intel_pps_init(dev_priv);
if (!HAS_DISPLAY(dev_priv) || !INTEL_DISPLAY_ENABLED(dev_priv))
return;
if (INTEL_GEN(dev_priv) >= 12) {
intel_ddi_init(dev_priv, PORT_A);
intel_ddi_init(dev_priv, PORT_B);
intel_ddi_init(dev_priv, PORT_D);
intel_ddi_init(dev_priv, PORT_E);
intel_ddi_init(dev_priv, PORT_F);
intel_ddi_init(dev_priv, PORT_G);
intel_ddi_init(dev_priv, PORT_H);
intel_ddi_init(dev_priv, PORT_I);
icl_dsi_init(dev_priv);
} else if (IS_ELKHARTLAKE(dev_priv)) {
intel_ddi_init(dev_priv, PORT_A);
intel_ddi_init(dev_priv, PORT_B);
intel_ddi_init(dev_priv, PORT_C);
intel_ddi_init(dev_priv, PORT_D);
icl_dsi_init(dev_priv);
} else if (IS_GEN(dev_priv, 11)) {
intel_ddi_init(dev_priv, PORT_A);
intel_ddi_init(dev_priv, PORT_B);
intel_ddi_init(dev_priv, PORT_C);
intel_ddi_init(dev_priv, PORT_D);
intel_ddi_init(dev_priv, PORT_E);
/*
* On some ICL SKUs port F is not present. No strap bits for
* this, so rely on VBT.
* Work around broken VBTs on SKUs known to have no port F.
*/
if (IS_ICL_WITH_PORT_F(dev_priv) &&
intel_bios_is_port_present(dev_priv, PORT_F))
intel_ddi_init(dev_priv, PORT_F);
icl_dsi_init(dev_priv);
} else if (IS_GEN9_LP(dev_priv)) {
/*
* FIXME: Broxton doesn't support port detection via the
* DDI_BUF_CTL_A or SFUSE_STRAP registers, find another way to
* detect the ports.
*/
intel_ddi_init(dev_priv, PORT_A);
intel_ddi_init(dev_priv, PORT_B);
intel_ddi_init(dev_priv, PORT_C);
vlv_dsi_init(dev_priv);
} else if (HAS_DDI(dev_priv)) {
int found;
if (intel_ddi_crt_present(dev_priv))
intel_crt_init(dev_priv);
/*
* Haswell uses DDI functions to detect digital outputs.
* On SKL pre-D0 the strap isn't connected, so we assume
* it's there.
*/
found = I915_READ(DDI_BUF_CTL(PORT_A)) & DDI_INIT_DISPLAY_DETECTED;
/* WaIgnoreDDIAStrap: skl */
if (found || IS_GEN9_BC(dev_priv))
intel_ddi_init(dev_priv, PORT_A);
/* DDI B, C, D, and F detection is indicated by the SFUSE_STRAP
* register */
found = I915_READ(SFUSE_STRAP);
if (found & SFUSE_STRAP_DDIB_DETECTED)
intel_ddi_init(dev_priv, PORT_B);
if (found & SFUSE_STRAP_DDIC_DETECTED)
intel_ddi_init(dev_priv, PORT_C);
if (found & SFUSE_STRAP_DDID_DETECTED)
intel_ddi_init(dev_priv, PORT_D);
if (found & SFUSE_STRAP_DDIF_DETECTED)
intel_ddi_init(dev_priv, PORT_F);
/*
* On SKL we don't have a way to detect DDI-E so we rely on VBT.
*/
if (IS_GEN9_BC(dev_priv) &&
intel_bios_is_port_present(dev_priv, PORT_E))
intel_ddi_init(dev_priv, PORT_E);
} else if (HAS_PCH_SPLIT(dev_priv)) {
int found;
/*
* intel_edp_init_connector() depends on this completing first,
* to prevent the registration of both eDP and LVDS and the
* incorrect sharing of the PPS.
*/
intel_lvds_init(dev_priv);
intel_crt_init(dev_priv);
dpd_is_edp = intel_dp_is_port_edp(dev_priv, PORT_D);
if (ilk_has_edp_a(dev_priv))
intel_dp_init(dev_priv, DP_A, PORT_A);
if (I915_READ(PCH_HDMIB) & SDVO_DETECTED) {
/* PCH SDVOB multiplex with HDMIB */
found = intel_sdvo_init(dev_priv, PCH_SDVOB, PORT_B);
if (!found)
intel_hdmi_init(dev_priv, PCH_HDMIB, PORT_B);
if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
intel_dp_init(dev_priv, PCH_DP_B, PORT_B);
}
if (I915_READ(PCH_HDMIC) & SDVO_DETECTED)
intel_hdmi_init(dev_priv, PCH_HDMIC, PORT_C);
if (!dpd_is_edp && I915_READ(PCH_HDMID) & SDVO_DETECTED)
intel_hdmi_init(dev_priv, PCH_HDMID, PORT_D);
if (I915_READ(PCH_DP_C) & DP_DETECTED)
intel_dp_init(dev_priv, PCH_DP_C, PORT_C);
if (I915_READ(PCH_DP_D) & DP_DETECTED)
intel_dp_init(dev_priv, PCH_DP_D, PORT_D);
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
bool has_edp, has_port;
if (IS_VALLEYVIEW(dev_priv) && dev_priv->vbt.int_crt_support)
intel_crt_init(dev_priv);
/*
* The DP_DETECTED bit is the latched state of the DDC
* SDA pin at boot. However since eDP doesn't require DDC
* (no way to plug in a DP->HDMI dongle) the DDC pins for
* eDP ports may have been muxed to an alternate function.
* Thus we can't rely on the DP_DETECTED bit alone to detect
* eDP ports. Consult the VBT as well as DP_DETECTED to
* detect eDP ports.
*
* Sadly the straps seem to be missing sometimes even for HDMI
* ports (eg. on Voyo V3 - CHT x7-Z8700), so check both strap
* and VBT for the presence of the port. Additionally we can't
* trust the port type the VBT declares as we've seen at least
* HDMI ports that the VBT claim are DP or eDP.
*/
has_edp = intel_dp_is_port_edp(dev_priv, PORT_B);
has_port = intel_bios_is_port_present(dev_priv, PORT_B);
if (I915_READ(VLV_DP_B) & DP_DETECTED || has_port)
has_edp &= intel_dp_init(dev_priv, VLV_DP_B, PORT_B);
if ((I915_READ(VLV_HDMIB) & SDVO_DETECTED || has_port) && !has_edp)
intel_hdmi_init(dev_priv, VLV_HDMIB, PORT_B);
has_edp = intel_dp_is_port_edp(dev_priv, PORT_C);
has_port = intel_bios_is_port_present(dev_priv, PORT_C);
if (I915_READ(VLV_DP_C) & DP_DETECTED || has_port)
has_edp &= intel_dp_init(dev_priv, VLV_DP_C, PORT_C);
if ((I915_READ(VLV_HDMIC) & SDVO_DETECTED || has_port) && !has_edp)
intel_hdmi_init(dev_priv, VLV_HDMIC, PORT_C);
if (IS_CHERRYVIEW(dev_priv)) {
/*
* eDP not supported on port D,
* so no need to worry about it
*/
has_port = intel_bios_is_port_present(dev_priv, PORT_D);
if (I915_READ(CHV_DP_D) & DP_DETECTED || has_port)
intel_dp_init(dev_priv, CHV_DP_D, PORT_D);
if (I915_READ(CHV_HDMID) & SDVO_DETECTED || has_port)
intel_hdmi_init(dev_priv, CHV_HDMID, PORT_D);
}
vlv_dsi_init(dev_priv);
} else if (IS_PINEVIEW(dev_priv)) {
intel_lvds_init(dev_priv);
intel_crt_init(dev_priv);
} else if (IS_GEN_RANGE(dev_priv, 3, 4)) {
bool found = false;
if (IS_MOBILE(dev_priv))
intel_lvds_init(dev_priv);
intel_crt_init(dev_priv);
if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
DRM_DEBUG_KMS("probing SDVOB\n");
found = intel_sdvo_init(dev_priv, GEN3_SDVOB, PORT_B);
if (!found && IS_G4X(dev_priv)) {
DRM_DEBUG_KMS("probing HDMI on SDVOB\n");
intel_hdmi_init(dev_priv, GEN4_HDMIB, PORT_B);
}
if (!found && IS_G4X(dev_priv))
intel_dp_init(dev_priv, DP_B, PORT_B);
}
/* Before G4X SDVOC doesn't have its own detect register */
if (I915_READ(GEN3_SDVOB) & SDVO_DETECTED) {
DRM_DEBUG_KMS("probing SDVOC\n");
found = intel_sdvo_init(dev_priv, GEN3_SDVOC, PORT_C);
}
if (!found && (I915_READ(GEN3_SDVOC) & SDVO_DETECTED)) {
if (IS_G4X(dev_priv)) {
DRM_DEBUG_KMS("probing HDMI on SDVOC\n");
intel_hdmi_init(dev_priv, GEN4_HDMIC, PORT_C);
}
if (IS_G4X(dev_priv))
intel_dp_init(dev_priv, DP_C, PORT_C);
}
if (IS_G4X(dev_priv) && (I915_READ(DP_D) & DP_DETECTED))
intel_dp_init(dev_priv, DP_D, PORT_D);
if (SUPPORTS_TV(dev_priv))
intel_tv_init(dev_priv);
} else if (IS_GEN(dev_priv, 2)) {
if (IS_I85X(dev_priv))
intel_lvds_init(dev_priv);
intel_crt_init(dev_priv);
intel_dvo_init(dev_priv);
}
intel_psr_init(dev_priv);
for_each_intel_encoder(&dev_priv->drm, encoder) {
encoder->base.possible_crtcs =
intel_encoder_possible_crtcs(encoder);
encoder->base.possible_clones =
intel_encoder_possible_clones(encoder);
}
intel_init_pch_refclk(dev_priv);
drm_helper_move_panel_connectors_to_head(&dev_priv->drm);
}
static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
drm_framebuffer_cleanup(fb);
intel_frontbuffer_put(intel_fb->frontbuffer);
kfree(intel_fb);
}
static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file,
unsigned int *handle)
{
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
if (obj->userptr.mm) {
DRM_DEBUG("attempting to use a userptr for a framebuffer, denied\n");
return -EINVAL;
}
return drm_gem_handle_create(file, &obj->base, handle);
}
static int intel_user_framebuffer_dirty(struct drm_framebuffer *fb,
struct drm_file *file,
unsigned flags, unsigned color,
struct drm_clip_rect *clips,
unsigned num_clips)
{
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
i915_gem_object_flush_if_display(obj);
intel_frontbuffer_flush(to_intel_frontbuffer(fb), ORIGIN_DIRTYFB);
return 0;
}
static const struct drm_framebuffer_funcs intel_fb_funcs = {
.destroy = intel_user_framebuffer_destroy,
.create_handle = intel_user_framebuffer_create_handle,
.dirty = intel_user_framebuffer_dirty,
};
static int intel_framebuffer_init(struct intel_framebuffer *intel_fb,
struct drm_i915_gem_object *obj,
struct drm_mode_fb_cmd2 *mode_cmd)
{
struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
struct drm_framebuffer *fb = &intel_fb->base;
u32 max_stride;
unsigned int tiling, stride;
int ret = -EINVAL;
int i;
intel_fb->frontbuffer = intel_frontbuffer_get(obj);
if (!intel_fb->frontbuffer)
return -ENOMEM;
i915_gem_object_lock(obj);
tiling = i915_gem_object_get_tiling(obj);
stride = i915_gem_object_get_stride(obj);
i915_gem_object_unlock(obj);
if (mode_cmd->flags & DRM_MODE_FB_MODIFIERS) {
/*
* If there's a fence, enforce that
* the fb modifier and tiling mode match.
*/
if (tiling != I915_TILING_NONE &&
tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
DRM_DEBUG_KMS("tiling_mode doesn't match fb modifier\n");
goto err;
}
} else {
if (tiling == I915_TILING_X) {
mode_cmd->modifier[0] = I915_FORMAT_MOD_X_TILED;
} else if (tiling == I915_TILING_Y) {
DRM_DEBUG_KMS("No Y tiling for legacy addfb\n");
goto err;
}
}
if (!drm_any_plane_has_format(&dev_priv->drm,
mode_cmd->pixel_format,
mode_cmd->modifier[0])) {
struct drm_format_name_buf format_name;
DRM_DEBUG_KMS("unsupported pixel format %s / modifier 0x%llx\n",
drm_get_format_name(mode_cmd->pixel_format,
&format_name),
mode_cmd->modifier[0]);
goto err;
}
/*
* gen2/3 display engine uses the fence if present,
* so the tiling mode must match the fb modifier exactly.
*/
if (INTEL_GEN(dev_priv) < 4 &&
tiling != intel_fb_modifier_to_tiling(mode_cmd->modifier[0])) {
DRM_DEBUG_KMS("tiling_mode must match fb modifier exactly on gen2/3\n");
goto err;
}
max_stride = intel_fb_max_stride(dev_priv, mode_cmd->pixel_format,
mode_cmd->modifier[0]);
if (mode_cmd->pitches[0] > max_stride) {
DRM_DEBUG_KMS("%s pitch (%u) must be at most %d\n",
mode_cmd->modifier[0] != DRM_FORMAT_MOD_LINEAR ?
"tiled" : "linear",
mode_cmd->pitches[0], max_stride);
goto err;
}
/*
* If there's a fence, enforce that
* the fb pitch and fence stride match.
*/
if (tiling != I915_TILING_NONE && mode_cmd->pitches[0] != stride) {
DRM_DEBUG_KMS("pitch (%d) must match tiling stride (%d)\n",
mode_cmd->pitches[0], stride);
goto err;
}
/* FIXME need to adjust LINOFF/TILEOFF accordingly. */
if (mode_cmd->offsets[0] != 0)
goto err;
drm_helper_mode_fill_fb_struct(&dev_priv->drm, fb, mode_cmd);
for (i = 0; i < fb->format->num_planes; i++) {
u32 stride_alignment;
if (mode_cmd->handles[i] != mode_cmd->handles[0]) {
DRM_DEBUG_KMS("bad plane %d handle\n", i);
goto err;
}
stride_alignment = intel_fb_stride_alignment(fb, i);
/*
* Display WA #0531: skl,bxt,kbl,glk
*
* Render decompression and plane width > 3840
* combined with horizontal panning requires the
* plane stride to be a multiple of 4. We'll just
* require the entire fb to accommodate that to avoid
* potential runtime errors at plane configuration time.
*/
if (IS_GEN(dev_priv, 9) && i == 0 && fb->width > 3840 &&
is_ccs_modifier(fb->modifier))
stride_alignment *= 4;
if (fb->pitches[i] & (stride_alignment - 1)) {
DRM_DEBUG_KMS("plane %d pitch (%d) must be at least %u byte aligned\n",
i, fb->pitches[i], stride_alignment);
goto err;
}
fb->obj[i] = &obj->base;
}
ret = intel_fill_fb_info(dev_priv, fb);
if (ret)
goto err;
ret = drm_framebuffer_init(&dev_priv->drm, fb, &intel_fb_funcs);
if (ret) {
DRM_ERROR("framebuffer init failed %d\n", ret);
goto err;
}
return 0;
err:
intel_frontbuffer_put(intel_fb->frontbuffer);
return ret;
}
static struct drm_framebuffer *
intel_user_framebuffer_create(struct drm_device *dev,
struct drm_file *filp,
const struct drm_mode_fb_cmd2 *user_mode_cmd)
{
struct drm_framebuffer *fb;
struct drm_i915_gem_object *obj;
struct drm_mode_fb_cmd2 mode_cmd = *user_mode_cmd;
obj = i915_gem_object_lookup(filp, mode_cmd.handles[0]);
if (!obj)
return ERR_PTR(-ENOENT);
fb = intel_framebuffer_create(obj, &mode_cmd);
i915_gem_object_put(obj);
return fb;
}
static void intel_atomic_state_free(struct drm_atomic_state *state)
{
struct intel_atomic_state *intel_state = to_intel_atomic_state(state);
drm_atomic_state_default_release(state);
i915_sw_fence_fini(&intel_state->commit_ready);
kfree(state);
}
static enum drm_mode_status
intel_mode_valid(struct drm_device *dev,
const struct drm_display_mode *mode)
{
struct drm_i915_private *dev_priv = to_i915(dev);
int hdisplay_max, htotal_max;
int vdisplay_max, vtotal_max;
/*
* Can't reject DBLSCAN here because Xorg ddxen can add piles
* of DBLSCAN modes to the output's mode list when they detect
* the scaling mode property on the connector. And they don't
* ask the kernel to validate those modes in any way until
* modeset time at which point the client gets a protocol error.
* So in order to not upset those clients we silently ignore the
* DBLSCAN flag on such connectors. For other connectors we will
* reject modes with the DBLSCAN flag in encoder->compute_config().
* And we always reject DBLSCAN modes in connector->mode_valid()
* as we never want such modes on the connector's mode list.
*/
if (mode->vscan > 1)
return MODE_NO_VSCAN;
if (mode->flags & DRM_MODE_FLAG_HSKEW)
return MODE_H_ILLEGAL;
if (mode->flags & (DRM_MODE_FLAG_CSYNC |
DRM_MODE_FLAG_NCSYNC |
DRM_MODE_FLAG_PCSYNC))
return MODE_HSYNC;
if (mode->flags & (DRM_MODE_FLAG_BCAST |
DRM_MODE_FLAG_PIXMUX |
DRM_MODE_FLAG_CLKDIV2))
return MODE_BAD;
/* Transcoder timing limits */
if (INTEL_GEN(dev_priv) >= 11) {
hdisplay_max = 16384;
vdisplay_max = 8192;
htotal_max = 16384;
vtotal_max = 8192;
} else if (INTEL_GEN(dev_priv) >= 9 ||
IS_BROADWELL(dev_priv) || IS_HASWELL(dev_priv)) {
hdisplay_max = 8192; /* FDI max 4096 handled elsewhere */
vdisplay_max = 4096;
htotal_max = 8192;
vtotal_max = 8192;
} else if (INTEL_GEN(dev_priv) >= 3) {
hdisplay_max = 4096;
vdisplay_max = 4096;
htotal_max = 8192;
vtotal_max = 8192;
} else {
hdisplay_max = 2048;
vdisplay_max = 2048;
htotal_max = 4096;
vtotal_max = 4096;
}
if (mode->hdisplay > hdisplay_max ||
mode->hsync_start > htotal_max ||
mode->hsync_end > htotal_max ||
mode->htotal > htotal_max)
return MODE_H_ILLEGAL;
if (mode->vdisplay > vdisplay_max ||
mode->vsync_start > vtotal_max ||
mode->vsync_end > vtotal_max ||
mode->vtotal > vtotal_max)
return MODE_V_ILLEGAL;
if (INTEL_GEN(dev_priv) >= 5) {
if (mode->hdisplay < 64 ||
mode->htotal - mode->hdisplay < 32)
return MODE_H_ILLEGAL;
if (mode->vtotal - mode->vdisplay < 5)
return MODE_V_ILLEGAL;
} else {
if (mode->htotal - mode->hdisplay < 32)
return MODE_H_ILLEGAL;
if (mode->vtotal - mode->vdisplay < 3)
return MODE_V_ILLEGAL;
}
return MODE_OK;
}
enum drm_mode_status
intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,
const struct drm_display_mode *mode)
{
int plane_width_max, plane_height_max;
/*
* intel_mode_valid() should be
* sufficient on older platforms.
*/
if (INTEL_GEN(dev_priv) < 9)
return MODE_OK;
/*
* Most people will probably want a fullscreen
* plane so let's not advertize modes that are
* too big for that.
*/
if (INTEL_GEN(dev_priv) >= 11) {
plane_width_max = 5120;
plane_height_max = 4320;
} else {
plane_width_max = 5120;
plane_height_max = 4096;
}
if (mode->hdisplay > plane_width_max)
return MODE_H_ILLEGAL;
if (mode->vdisplay > plane_height_max)
return MODE_V_ILLEGAL;
return MODE_OK;
}
static const struct drm_mode_config_funcs intel_mode_funcs = {
.fb_create = intel_user_framebuffer_create,
.get_format_info = intel_get_format_info,
.output_poll_changed = intel_fbdev_output_poll_changed,
.mode_valid = intel_mode_valid,
.atomic_check = intel_atomic_check,
.atomic_commit = intel_atomic_commit,
.atomic_state_alloc = intel_atomic_state_alloc,
.atomic_state_clear = intel_atomic_state_clear,
.atomic_state_free = intel_atomic_state_free,
};
/**
* intel_init_display_hooks - initialize the display modesetting hooks
* @dev_priv: device private
*/
void intel_init_display_hooks(struct drm_i915_private *dev_priv)
{
intel_init_cdclk_hooks(dev_priv);
if (INTEL_GEN(dev_priv) >= 9) {
dev_priv->display.get_pipe_config = haswell_get_pipe_config;
dev_priv->display.get_initial_plane_config =
skylake_get_initial_plane_config;
dev_priv->display.crtc_compute_clock =
haswell_crtc_compute_clock;
dev_priv->display.crtc_enable = haswell_crtc_enable;
dev_priv->display.crtc_disable = haswell_crtc_disable;
} else if (HAS_DDI(dev_priv)) {
dev_priv->display.get_pipe_config = haswell_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock =
haswell_crtc_compute_clock;
dev_priv->display.crtc_enable = haswell_crtc_enable;
dev_priv->display.crtc_disable = haswell_crtc_disable;
} else if (HAS_PCH_SPLIT(dev_priv)) {
dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock =
ironlake_crtc_compute_clock;
dev_priv->display.crtc_enable = ironlake_crtc_enable;
dev_priv->display.crtc_disable = ironlake_crtc_disable;
} else if (IS_CHERRYVIEW(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = chv_crtc_compute_clock;
dev_priv->display.crtc_enable = valleyview_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (IS_VALLEYVIEW(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = vlv_crtc_compute_clock;
dev_priv->display.crtc_enable = valleyview_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (IS_G4X(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = g4x_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (IS_PINEVIEW(dev_priv)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = pnv_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else if (!IS_GEN(dev_priv, 2)) {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = i9xx_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
} else {
dev_priv->display.get_pipe_config = i9xx_get_pipe_config;
dev_priv->display.get_initial_plane_config =
i9xx_get_initial_plane_config;
dev_priv->display.crtc_compute_clock = i8xx_crtc_compute_clock;
dev_priv->display.crtc_enable = i9xx_crtc_enable;
dev_priv->display.crtc_disable = i9xx_crtc_disable;
}
if (IS_GEN(dev_priv, 5)) {
dev_priv->display.fdi_link_train = ironlake_fdi_link_train;
} else if (IS_GEN(dev_priv, 6)) {
dev_priv->display.fdi_link_train = gen6_fdi_link_train;
} else if (IS_IVYBRIDGE(dev_priv)) {
/* FIXME: detect B0+ stepping and use auto training */
dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
} else if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv)) {
dev_priv->display.fdi_link_train = hsw_fdi_link_train;
}
if (INTEL_GEN(dev_priv) >= 9)
dev_priv->display.commit_modeset_enables = skl_commit_modeset_enables;
else
dev_priv->display.commit_modeset_enables = intel_commit_modeset_enables;
}
void intel_modeset_init_hw(struct drm_i915_private *i915)
{
intel_update_cdclk(i915);
intel_dump_cdclk_state(&i915->cdclk.hw, "Current CDCLK");
i915->cdclk.logical = i915->cdclk.actual = i915->cdclk.hw;
}
/*
* Calculate what we think the watermarks should be for the state we've read
* out of the hardware and then immediately program those watermarks so that
* we ensure the hardware settings match our internal state.
*
* We can calculate what we think WM's should be by creating a duplicate of the
* current state (which was constructed during hardware readout) and running it
* through the atomic check code to calculate new watermark values in the
* state object.
*/
static void sanitize_watermarks(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state;
struct intel_atomic_state *intel_state;
struct intel_crtc *crtc;
struct intel_crtc_state *crtc_state;
struct drm_modeset_acquire_ctx ctx;
int ret;
int i;
/* Only supported on platforms that use atomic watermark design */
if (!dev_priv->display.optimize_watermarks)
return;
/*
* We need to hold connection_mutex before calling duplicate_state so
* that the connector loop is protected.
*/
drm_modeset_acquire_init(&ctx, 0);
retry:
ret = drm_modeset_lock_all_ctx(dev, &ctx);
if (ret == -EDEADLK) {
drm_modeset_backoff(&ctx);
goto retry;
} else if (WARN_ON(ret)) {
goto fail;
}
state = drm_atomic_helper_duplicate_state(dev, &ctx);
if (WARN_ON(IS_ERR(state)))
goto fail;
intel_state = to_intel_atomic_state(state);
/*
* Hardware readout is the only time we don't want to calculate
* intermediate watermarks (since we don't trust the current
* watermarks).
*/
if (!HAS_GMCH(dev_priv))
intel_state->skip_intermediate_wm = true;
ret = intel_atomic_check(dev, state);
if (ret) {
/*
* If we fail here, it means that the hardware appears to be
* programmed in a way that shouldn't be possible, given our
* understanding of watermark requirements. This might mean a
* mistake in the hardware readout code or a mistake in the
* watermark calculations for a given platform. Raise a WARN
* so that this is noticeable.
*
* If this actually happens, we'll have to just leave the
* BIOS-programmed watermarks untouched and hope for the best.
*/
WARN(true, "Could not determine valid watermarks for inherited state\n");
goto put_state;
}
/* Write calculated watermark values back */
for_each_new_intel_crtc_in_state(intel_state, crtc, crtc_state, i) {
crtc_state->wm.need_postvbl_update = true;
dev_priv->display.optimize_watermarks(intel_state, crtc_state);
to_intel_crtc_state(crtc->base.state)->wm = crtc_state->wm;
}
put_state:
drm_atomic_state_put(state);
fail:
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
}
static void intel_update_fdi_pll_freq(struct drm_i915_private *dev_priv)
{
if (IS_GEN(dev_priv, 5)) {
u32 fdi_pll_clk =
I915_READ(FDI_PLL_BIOS_0) & FDI_PLL_FB_CLOCK_MASK;
dev_priv->fdi_pll_freq = (fdi_pll_clk + 2) * 10000;
} else if (IS_GEN(dev_priv, 6) || IS_IVYBRIDGE(dev_priv)) {
dev_priv->fdi_pll_freq = 270000;
} else {
return;
}
DRM_DEBUG_DRIVER("FDI PLL freq=%d\n", dev_priv->fdi_pll_freq);
}
static int intel_initial_commit(struct drm_device *dev)
{
struct drm_atomic_state *state = NULL;
struct drm_modeset_acquire_ctx ctx;
struct drm_crtc *crtc;
struct drm_crtc_state *crtc_state;
int ret = 0;
state = drm_atomic_state_alloc(dev);
if (!state)
return -ENOMEM;
drm_modeset_acquire_init(&ctx, 0);
retry:
state->acquire_ctx = &ctx;
drm_for_each_crtc(crtc, dev) {
crtc_state = drm_atomic_get_crtc_state(state, crtc);
if (IS_ERR(crtc_state)) {
ret = PTR_ERR(crtc_state);
goto out;
}
if (crtc_state->active) {
ret = drm_atomic_add_affected_planes(state, crtc);
if (ret)
goto out;
/*
* FIXME hack to force a LUT update to avoid the
* plane update forcing the pipe gamma on without
* having a proper LUT loaded. Remove once we
* have readout for pipe gamma enable.
*/
crtc_state->color_mgmt_changed = true;
}
}
ret = drm_atomic_commit(state);
out:
if (ret == -EDEADLK) {
drm_atomic_state_clear(state);
drm_modeset_backoff(&ctx);
goto retry;
}
drm_atomic_state_put(state);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
return ret;
}
static void intel_mode_config_init(struct drm_i915_private *i915)
{
struct drm_mode_config *mode_config = &i915->drm.mode_config;
drm_mode_config_init(&i915->drm);
mode_config->min_width = 0;
mode_config->min_height = 0;
mode_config->preferred_depth = 24;
mode_config->prefer_shadow = 1;
mode_config->allow_fb_modifiers = true;
mode_config->funcs = &intel_mode_funcs;
/*
* Maximum framebuffer dimensions, chosen to match
* the maximum render engine surface size on gen4+.
*/
if (INTEL_GEN(i915) >= 7) {
mode_config->max_width = 16384;
mode_config->max_height = 16384;
} else if (INTEL_GEN(i915) >= 4) {
mode_config->max_width = 8192;
mode_config->max_height = 8192;
} else if (IS_GEN(i915, 3)) {
mode_config->max_width = 4096;
mode_config->max_height = 4096;
} else {
mode_config->max_width = 2048;
mode_config->max_height = 2048;
}
if (IS_I845G(i915) || IS_I865G(i915)) {
mode_config->cursor_width = IS_I845G(i915) ? 64 : 512;
mode_config->cursor_height = 1023;
} else if (IS_GEN(i915, 2)) {
mode_config->cursor_width = 64;
mode_config->cursor_height = 64;
} else {
mode_config->cursor_width = 256;
mode_config->cursor_height = 256;
}
}
int intel_modeset_init(struct drm_i915_private *i915)
{
struct drm_device *dev = &i915->drm;
enum pipe pipe;
struct intel_crtc *crtc;
int ret;
i915->modeset_wq = alloc_ordered_workqueue("i915_modeset", 0);
i915->flip_wq = alloc_workqueue("i915_flip", WQ_HIGHPRI |
WQ_UNBOUND, WQ_UNBOUND_MAX_ACTIVE);
intel_mode_config_init(i915);
ret = intel_bw_init(i915);
if (ret)
return ret;
init_llist_head(&i915->atomic_helper.free_list);
INIT_WORK(&i915->atomic_helper.free_work,
intel_atomic_helper_free_state_worker);
intel_init_quirks(i915);
intel_fbc_init(i915);
intel_init_pm(i915);
intel_panel_sanitize_ssc(i915);
intel_gmbus_setup(i915);
DRM_DEBUG_KMS("%d display pipe%s available.\n",
INTEL_NUM_PIPES(i915),
INTEL_NUM_PIPES(i915) > 1 ? "s" : "");
if (HAS_DISPLAY(i915) && INTEL_DISPLAY_ENABLED(i915)) {
for_each_pipe(i915, pipe) {
ret = intel_crtc_init(i915, pipe);
if (ret) {
drm_mode_config_cleanup(dev);
return ret;
}
}
}
intel_shared_dpll_init(dev);
intel_update_fdi_pll_freq(i915);
intel_update_czclk(i915);
intel_modeset_init_hw(i915);
intel_hdcp_component_init(i915);
if (i915->max_cdclk_freq == 0)
intel_update_max_cdclk(i915);
/* Just disable it once at startup */
intel_vga_disable(i915);
intel_setup_outputs(i915);
drm_modeset_lock_all(dev);
intel_modeset_setup_hw_state(dev, dev->mode_config.acquire_ctx);
drm_modeset_unlock_all(dev);
for_each_intel_crtc(dev, crtc) {
struct intel_initial_plane_config plane_config = {};
if (!crtc->active)
continue;
/*
* Note that reserving the BIOS fb up front prevents us
* from stuffing other stolen allocations like the ring
* on top. This prevents some ugliness at boot time, and
* can even allow for smooth boot transitions if the BIOS
* fb is large enough for the active pipe configuration.
*/
i915->display.get_initial_plane_config(crtc, &plane_config);
/*
* If the fb is shared between multiple heads, we'll
* just get the first one.
*/
intel_find_initial_plane_obj(crtc, &plane_config);
}
/*
* Make sure hardware watermarks really match the state we read out.
* Note that we need to do this after reconstructing the BIOS fb's
* since the watermark calculation done here will use pstate->fb.
*/
if (!HAS_GMCH(i915))
sanitize_watermarks(dev);
/*
* Force all active planes to recompute their states. So that on
* mode_setcrtc after probe, all the intel_plane_state variables
* are already calculated and there is no assert_plane warnings
* during bootup.
*/
ret = intel_initial_commit(dev);
if (ret)
DRM_DEBUG_KMS("Initial commit in probe failed.\n");
return 0;
}
void i830_enable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
{
struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
/* 640x480@60Hz, ~25175 kHz */
struct dpll clock = {
.m1 = 18,
.m2 = 7,
.p1 = 13,
.p2 = 4,
.n = 2,
};
u32 dpll, fp;
int i;
WARN_ON(i9xx_calc_dpll_params(48000, &clock) != 25154);
DRM_DEBUG_KMS("enabling pipe %c due to force quirk (vco=%d dot=%d)\n",
pipe_name(pipe), clock.vco, clock.dot);
fp = i9xx_dpll_compute_fp(&clock);
dpll = DPLL_DVO_2X_MODE |
DPLL_VGA_MODE_DIS |
((clock.p1 - 2) << DPLL_FPA01_P1_POST_DIV_SHIFT) |
PLL_P2_DIVIDE_BY_4 |
PLL_REF_INPUT_DREFCLK |
DPLL_VCO_ENABLE;
I915_WRITE(FP0(pipe), fp);
I915_WRITE(FP1(pipe), fp);
I915_WRITE(HTOTAL(pipe), (640 - 1) | ((800 - 1) << 16));
I915_WRITE(HBLANK(pipe), (640 - 1) | ((800 - 1) << 16));
I915_WRITE(HSYNC(pipe), (656 - 1) | ((752 - 1) << 16));
I915_WRITE(VTOTAL(pipe), (480 - 1) | ((525 - 1) << 16));
I915_WRITE(VBLANK(pipe), (480 - 1) | ((525 - 1) << 16));
I915_WRITE(VSYNC(pipe), (490 - 1) | ((492 - 1) << 16));
I915_WRITE(PIPESRC(pipe), ((640 - 1) << 16) | (480 - 1));
/*
* Apparently we need to have VGA mode enabled prior to changing
* the P1/P2 dividers. Otherwise the DPLL will keep using the old
* dividers, even though the register value does change.
*/
I915_WRITE(DPLL(pipe), dpll & ~DPLL_VGA_MODE_DIS);
I915_WRITE(DPLL(pipe), dpll);
/* Wait for the clocks to stabilize. */
POSTING_READ(DPLL(pipe));
udelay(150);
/* The pixel multiplier can only be updated once the
* DPLL is enabled and the clocks are stable.
*
* So write it again.
*/
I915_WRITE(DPLL(pipe), dpll);
/* We do this three times for luck */
for (i = 0; i < 3 ; i++) {
I915_WRITE(DPLL(pipe), dpll);
POSTING_READ(DPLL(pipe));
udelay(150); /* wait for warmup */
}
I915_WRITE(PIPECONF(pipe), PIPECONF_ENABLE | PIPECONF_PROGRESSIVE);
POSTING_READ(PIPECONF(pipe));
intel_wait_for_pipe_scanline_moving(crtc);
}
void i830_disable_pipe(struct drm_i915_private *dev_priv, enum pipe pipe)
{
struct intel_crtc *crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
DRM_DEBUG_KMS("disabling pipe %c due to force quirk\n",
pipe_name(pipe));
WARN_ON(I915_READ(DSPCNTR(PLANE_A)) & DISPLAY_PLANE_ENABLE);
WARN_ON(I915_READ(DSPCNTR(PLANE_B)) & DISPLAY_PLANE_ENABLE);
WARN_ON(I915_READ(DSPCNTR(PLANE_C)) & DISPLAY_PLANE_ENABLE);
WARN_ON(I915_READ(CURCNTR(PIPE_A)) & MCURSOR_MODE);
WARN_ON(I915_READ(CURCNTR(PIPE_B)) & MCURSOR_MODE);
I915_WRITE(PIPECONF(pipe), 0);
POSTING_READ(PIPECONF(pipe));
intel_wait_for_pipe_scanline_stopped(crtc);
I915_WRITE(DPLL(pipe), DPLL_VGA_MODE_DIS);
POSTING_READ(DPLL(pipe));
}
static void
intel_sanitize_plane_mapping(struct drm_i915_private *dev_priv)
{
struct intel_crtc *crtc;
if (INTEL_GEN(dev_priv) >= 4)
return;
for_each_intel_crtc(&dev_priv->drm, crtc) {
struct intel_plane *plane =
to_intel_plane(crtc->base.primary);
struct intel_crtc *plane_crtc;
enum pipe pipe;
if (!plane->get_hw_state(plane, &pipe))
continue;
if (pipe == crtc->pipe)
continue;
DRM_DEBUG_KMS("[PLANE:%d:%s] attached to the wrong pipe, disabling plane\n",
plane->base.base.id, plane->base.name);
plane_crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
intel_plane_disable_noatomic(plane_crtc, plane);
}
}
static bool intel_crtc_has_encoders(struct intel_crtc *crtc)
{
struct drm_device *dev = crtc->base.dev;
struct intel_encoder *encoder;
for_each_encoder_on_crtc(dev, &crtc->base, encoder)
return true;
return false;
}
static struct intel_connector *intel_encoder_find_connector(struct intel_encoder *encoder)
{
struct drm_device *dev = encoder->base.dev;
struct intel_connector *connector;
for_each_connector_on_encoder(dev, &encoder->base, connector)
return connector;
return NULL;
}
static bool has_pch_trancoder(struct drm_i915_private *dev_priv,
enum pipe pch_transcoder)
{
return HAS_PCH_IBX(dev_priv) || HAS_PCH_CPT(dev_priv) ||
(HAS_PCH_LPT_H(dev_priv) && pch_transcoder == PIPE_A);
}
static void intel_sanitize_crtc(struct intel_crtc *crtc,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_state *crtc_state = to_intel_crtc_state(crtc->base.state);
enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
/* Clear any frame start delays used for debugging left by the BIOS */
if (crtc->active && !transcoder_is_dsi(cpu_transcoder)) {
i915_reg_t reg = PIPECONF(cpu_transcoder);
I915_WRITE(reg,
I915_READ(reg) & ~PIPECONF_FRAME_START_DELAY_MASK);
}
if (crtc_state->base.active) {
struct intel_plane *plane;
/* Disable everything but the primary plane */
for_each_intel_plane_on_crtc(dev, crtc, plane) {
const struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
if (plane_state->base.visible &&
plane->base.type != DRM_PLANE_TYPE_PRIMARY)
intel_plane_disable_noatomic(crtc, plane);
}
/*
* Disable any background color set by the BIOS, but enable the
* gamma and CSC to match how we program our planes.
*/
if (INTEL_GEN(dev_priv) >= 9)
I915_WRITE(SKL_BOTTOM_COLOR(crtc->pipe),
SKL_BOTTOM_COLOR_GAMMA_ENABLE |
SKL_BOTTOM_COLOR_CSC_ENABLE);
}
/* Adjust the state of the output pipe according to whether we
* have active connectors/encoders. */
if (crtc_state->base.active && !intel_crtc_has_encoders(crtc))
intel_crtc_disable_noatomic(&crtc->base, ctx);
if (crtc_state->base.active || HAS_GMCH(dev_priv)) {
/*
* We start out with underrun reporting disabled to avoid races.
* For correct bookkeeping mark this on active crtcs.
*
* Also on gmch platforms we dont have any hardware bits to
* disable the underrun reporting. Which means we need to start
* out with underrun reporting disabled also on inactive pipes,
* since otherwise we'll complain about the garbage we read when
* e.g. coming up after runtime pm.
*
* No protection against concurrent access is required - at
* worst a fifo underrun happens which also sets this to false.
*/
crtc->cpu_fifo_underrun_disabled = true;
/*
* We track the PCH trancoder underrun reporting state
* within the crtc. With crtc for pipe A housing the underrun
* reporting state for PCH transcoder A, crtc for pipe B housing
* it for PCH transcoder B, etc. LPT-H has only PCH transcoder A,
* and marking underrun reporting as disabled for the non-existing
* PCH transcoders B and C would prevent enabling the south
* error interrupt (see cpt_can_enable_serr_int()).
*/
if (has_pch_trancoder(dev_priv, crtc->pipe))
crtc->pch_fifo_underrun_disabled = true;
}
}
static bool has_bogus_dpll_config(const struct intel_crtc_state *crtc_state)
{
struct drm_i915_private *dev_priv = to_i915(crtc_state->base.crtc->dev);
/*
* Some SNB BIOSen (eg. ASUS K53SV) are known to misprogram
* the hardware when a high res displays plugged in. DPLL P
* divider is zero, and the pipe timings are bonkers. We'll
* try to disable everything in that case.
*
* FIXME would be nice to be able to sanitize this state
* without several WARNs, but for now let's take the easy
* road.
*/
return IS_GEN(dev_priv, 6) &&
crtc_state->base.active &&
crtc_state->shared_dpll &&
crtc_state->port_clock == 0;
}
static void intel_sanitize_encoder(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
struct intel_connector *connector;
struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
struct intel_crtc_state *crtc_state = crtc ?
to_intel_crtc_state(crtc->base.state) : NULL;
/* We need to check both for a crtc link (meaning that the
* encoder is active and trying to read from a pipe) and the
* pipe itself being active. */
bool has_active_crtc = crtc_state &&
crtc_state->base.active;
if (crtc_state && has_bogus_dpll_config(crtc_state)) {
DRM_DEBUG_KMS("BIOS has misprogrammed the hardware. Disabling pipe %c\n",
pipe_name(crtc->pipe));
has_active_crtc = false;
}
connector = intel_encoder_find_connector(encoder);
if (connector && !has_active_crtc) {
DRM_DEBUG_KMS("[ENCODER:%d:%s] has active connectors but no active pipe!\n",
encoder->base.base.id,
encoder->base.name);
/* Connector is active, but has no active pipe. This is
* fallout from our resume register restoring. Disable
* the encoder manually again. */
if (crtc_state) {
struct drm_encoder *best_encoder;
DRM_DEBUG_KMS("[ENCODER:%d:%s] manually disabled\n",
encoder->base.base.id,
encoder->base.name);
/* avoid oopsing in case the hooks consult best_encoder */
best_encoder = connector->base.state->best_encoder;
connector->base.state->best_encoder = &encoder->base;
if (encoder->disable)
encoder->disable(encoder, crtc_state,
connector->base.state);
if (encoder->post_disable)
encoder->post_disable(encoder, crtc_state,
connector->base.state);
connector->base.state->best_encoder = best_encoder;
}
encoder->base.crtc = NULL;
/* Inconsistent output/port/pipe state happens presumably due to
* a bug in one of the get_hw_state functions. Or someplace else
* in our code, like the register restore mess on resume. Clamp
* things to off as a safer default. */
connector->base.dpms = DRM_MODE_DPMS_OFF;
connector->base.encoder = NULL;
}
/* notify opregion of the sanitized encoder state */
intel_opregion_notify_encoder(encoder, connector && has_active_crtc);
if (INTEL_GEN(dev_priv) >= 11)
icl_sanitize_encoder_pll_mapping(encoder);
}
/* FIXME read out full plane state for all planes */
static void readout_plane_state(struct drm_i915_private *dev_priv)
{
struct intel_plane *plane;
struct intel_crtc *crtc;
for_each_intel_plane(&dev_priv->drm, plane) {
struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
struct intel_crtc_state *crtc_state;
enum pipe pipe = PIPE_A;
bool visible;
visible = plane->get_hw_state(plane, &pipe);
crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
crtc_state = to_intel_crtc_state(crtc->base.state);
intel_set_plane_visible(crtc_state, plane_state, visible);
DRM_DEBUG_KMS("[PLANE:%d:%s] hw state readout: %s, pipe %c\n",
plane->base.base.id, plane->base.name,
enableddisabled(visible), pipe_name(pipe));
}
for_each_intel_crtc(&dev_priv->drm, crtc) {
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
fixup_active_planes(crtc_state);
}
}
static void intel_modeset_readout_hw_state(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe;
struct intel_crtc *crtc;
struct intel_encoder *encoder;
struct intel_connector *connector;
struct drm_connector_list_iter conn_iter;
int i;
dev_priv->active_pipes = 0;
for_each_intel_crtc(dev, crtc) {
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
__drm_atomic_helper_crtc_destroy_state(&crtc_state->base);
memset(crtc_state, 0, sizeof(*crtc_state));
__drm_atomic_helper_crtc_reset(&crtc->base, &crtc_state->base);
crtc_state->base.active = crtc_state->base.enable =
dev_priv->display.get_pipe_config(crtc, crtc_state);
crtc->base.enabled = crtc_state->base.enable;
crtc->active = crtc_state->base.active;
if (crtc_state->base.active)
dev_priv->active_pipes |= BIT(crtc->pipe);
DRM_DEBUG_KMS("[CRTC:%d:%s] hw state readout: %s\n",
crtc->base.base.id, crtc->base.name,
enableddisabled(crtc_state->base.active));
}
readout_plane_state(dev_priv);
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
pll->on = pll->info->funcs->get_hw_state(dev_priv, pll,
&pll->state.hw_state);
if (IS_ELKHARTLAKE(dev_priv) && pll->on &&
pll->info->id == DPLL_ID_EHL_DPLL4) {
pll->wakeref = intel_display_power_get(dev_priv,
POWER_DOMAIN_DPLL_DC_OFF);
}
pll->state.crtc_mask = 0;
for_each_intel_crtc(dev, crtc) {
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
if (crtc_state->base.active &&
crtc_state->shared_dpll == pll)
pll->state.crtc_mask |= 1 << crtc->pipe;
}
pll->active_mask = pll->state.crtc_mask;
DRM_DEBUG_KMS("%s hw state readout: crtc_mask 0x%08x, on %i\n",
pll->info->name, pll->state.crtc_mask, pll->on);
}
for_each_intel_encoder(dev, encoder) {
pipe = 0;
if (encoder->get_hw_state(encoder, &pipe)) {
struct intel_crtc_state *crtc_state;
crtc = intel_get_crtc_for_pipe(dev_priv, pipe);
crtc_state = to_intel_crtc_state(crtc->base.state);
encoder->base.crtc = &crtc->base;
encoder->get_config(encoder, crtc_state);
} else {
encoder->base.crtc = NULL;
}
DRM_DEBUG_KMS("[ENCODER:%d:%s] hw state readout: %s, pipe %c\n",
encoder->base.base.id, encoder->base.name,
enableddisabled(encoder->base.crtc),
pipe_name(pipe));
}
drm_connector_list_iter_begin(dev, &conn_iter);
for_each_intel_connector_iter(connector, &conn_iter) {
if (connector->get_hw_state(connector)) {
struct intel_crtc_state *crtc_state;
struct intel_crtc *crtc;
connector->base.dpms = DRM_MODE_DPMS_ON;
encoder = connector->encoder;
connector->base.encoder = &encoder->base;
crtc = to_intel_crtc(encoder->base.crtc);
crtc_state = crtc ? to_intel_crtc_state(crtc->base.state) : NULL;
if (crtc_state && crtc_state->base.active) {
/*
* This has to be done during hardware readout
* because anything calling .crtc_disable may
* rely on the connector_mask being accurate.
*/
crtc_state->base.connector_mask |=
drm_connector_mask(&connector->base);
crtc_state->base.encoder_mask |=
drm_encoder_mask(&encoder->base);
}
} else {
connector->base.dpms = DRM_MODE_DPMS_OFF;
connector->base.encoder = NULL;
}
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] hw state readout: %s\n",
connector->base.base.id, connector->base.name,
enableddisabled(connector->base.encoder));
}
drm_connector_list_iter_end(&conn_iter);
for_each_intel_crtc(dev, crtc) {
struct intel_bw_state *bw_state =
to_intel_bw_state(dev_priv->bw_obj.state);
struct intel_crtc_state *crtc_state =
to_intel_crtc_state(crtc->base.state);
struct intel_plane *plane;
int min_cdclk = 0;
memset(&crtc->base.mode, 0, sizeof(crtc->base.mode));
if (crtc_state->base.active) {
intel_mode_from_pipe_config(&crtc->base.mode, crtc_state);
crtc->base.mode.hdisplay = crtc_state->pipe_src_w;
crtc->base.mode.vdisplay = crtc_state->pipe_src_h;
intel_mode_from_pipe_config(&crtc_state->base.adjusted_mode, crtc_state);
WARN_ON(drm_atomic_set_mode_for_crtc(&crtc_state->base, &crtc->base.mode));
/*
* The initial mode needs to be set in order to keep
* the atomic core happy. It wants a valid mode if the
* crtc's enabled, so we do the above call.
*
* But we don't set all the derived state fully, hence
* set a flag to indicate that a full recalculation is
* needed on the next commit.
*/
crtc_state->base.mode.private_flags = I915_MODE_FLAG_INHERITED;
intel_crtc_compute_pixel_rate(crtc_state);
intel_crtc_update_active_timings(crtc_state);
}
for_each_intel_plane_on_crtc(&dev_priv->drm, crtc, plane) {
const struct intel_plane_state *plane_state =
to_intel_plane_state(plane->base.state);
/*
* FIXME don't have the fb yet, so can't
* use intel_plane_data_rate() :(
*/
if (plane_state->base.visible)
crtc_state->data_rate[plane->id] =
4 * crtc_state->pixel_rate;
/*
* FIXME don't have the fb yet, so can't
* use plane->min_cdclk() :(
*/
if (plane_state->base.visible && plane->min_cdclk) {
if (crtc_state->double_wide ||
INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
crtc_state->min_cdclk[plane->id] =
DIV_ROUND_UP(crtc_state->pixel_rate, 2);
else
crtc_state->min_cdclk[plane->id] =
crtc_state->pixel_rate;
}
DRM_DEBUG_KMS("[PLANE:%d:%s] min_cdclk %d kHz\n",
plane->base.base.id, plane->base.name,
crtc_state->min_cdclk[plane->id]);
}
if (crtc_state->base.active) {
min_cdclk = intel_crtc_compute_min_cdclk(crtc_state);
if (WARN_ON(min_cdclk < 0))
min_cdclk = 0;
}
dev_priv->min_cdclk[crtc->pipe] = min_cdclk;
dev_priv->min_voltage_level[crtc->pipe] =
crtc_state->min_voltage_level;
intel_bw_crtc_update(bw_state, crtc_state);
intel_pipe_config_sanity_check(dev_priv, crtc_state);
}
}
static void
get_encoder_power_domains(struct drm_i915_private *dev_priv)
{
struct intel_encoder *encoder;
for_each_intel_encoder(&dev_priv->drm, encoder) {
struct intel_crtc_state *crtc_state;
if (!encoder->get_power_domains)
continue;
/*
* MST-primary and inactive encoders don't have a crtc state
* and neither of these require any power domain references.
*/
if (!encoder->base.crtc)
continue;
crtc_state = to_intel_crtc_state(encoder->base.crtc->state);
encoder->get_power_domains(encoder, crtc_state);
}
}
static void intel_early_display_was(struct drm_i915_private *dev_priv)
{
/* Display WA #1185 WaDisableDARBFClkGating:cnl,glk */
if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
I915_WRITE(GEN9_CLKGATE_DIS_0, I915_READ(GEN9_CLKGATE_DIS_0) |
DARBF_GATING_DIS);
if (IS_HASWELL(dev_priv)) {
/*
* WaRsPkgCStateDisplayPMReq:hsw
* System hang if this isn't done before disabling all planes!
*/
I915_WRITE(CHICKEN_PAR1_1,
I915_READ(CHICKEN_PAR1_1) | FORCE_ARB_IDLE_PLANES);
}
}
static void ibx_sanitize_pch_hdmi_port(struct drm_i915_private *dev_priv,
enum port port, i915_reg_t hdmi_reg)
{
u32 val = I915_READ(hdmi_reg);
if (val & SDVO_ENABLE ||
(val & SDVO_PIPE_SEL_MASK) == SDVO_PIPE_SEL(PIPE_A))
return;
DRM_DEBUG_KMS("Sanitizing transcoder select for HDMI %c\n",
port_name(port));
val &= ~SDVO_PIPE_SEL_MASK;
val |= SDVO_PIPE_SEL(PIPE_A);
I915_WRITE(hdmi_reg, val);
}
static void ibx_sanitize_pch_dp_port(struct drm_i915_private *dev_priv,
enum port port, i915_reg_t dp_reg)
{
u32 val = I915_READ(dp_reg);
if (val & DP_PORT_EN ||
(val & DP_PIPE_SEL_MASK) == DP_PIPE_SEL(PIPE_A))
return;
DRM_DEBUG_KMS("Sanitizing transcoder select for DP %c\n",
port_name(port));
val &= ~DP_PIPE_SEL_MASK;
val |= DP_PIPE_SEL(PIPE_A);
I915_WRITE(dp_reg, val);
}
static void ibx_sanitize_pch_ports(struct drm_i915_private *dev_priv)
{
/*
* The BIOS may select transcoder B on some of the PCH
* ports even it doesn't enable the port. This would trip
* assert_pch_dp_disabled() and assert_pch_hdmi_disabled().
* Sanitize the transcoder select bits to prevent that. We
* assume that the BIOS never actually enabled the port,
* because if it did we'd actually have to toggle the port
* on and back off to make the transcoder A select stick
* (see. intel_dp_link_down(), intel_disable_hdmi(),
* intel_disable_sdvo()).
*/
ibx_sanitize_pch_dp_port(dev_priv, PORT_B, PCH_DP_B);
ibx_sanitize_pch_dp_port(dev_priv, PORT_C, PCH_DP_C);
ibx_sanitize_pch_dp_port(dev_priv, PORT_D, PCH_DP_D);
/* PCH SDVOB multiplex with HDMIB */
ibx_sanitize_pch_hdmi_port(dev_priv, PORT_B, PCH_HDMIB);
ibx_sanitize_pch_hdmi_port(dev_priv, PORT_C, PCH_HDMIC);
ibx_sanitize_pch_hdmi_port(dev_priv, PORT_D, PCH_HDMID);
}
/* Scan out the current hw modeset state,
* and sanitizes it to the current state
*/
static void
intel_modeset_setup_hw_state(struct drm_device *dev,
struct drm_modeset_acquire_ctx *ctx)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct intel_crtc_state *crtc_state;
struct intel_encoder *encoder;
struct intel_crtc *crtc;
intel_wakeref_t wakeref;
int i;
wakeref = intel_display_power_get(dev_priv, POWER_DOMAIN_INIT);
intel_early_display_was(dev_priv);
intel_modeset_readout_hw_state(dev);
/* HW state is read out, now we need to sanitize this mess. */
/* Sanitize the TypeC port mode upfront, encoders depend on this */
for_each_intel_encoder(dev, encoder) {
enum phy phy = intel_port_to_phy(dev_priv, encoder->port);
/* We need to sanitize only the MST primary port. */
if (encoder->type != INTEL_OUTPUT_DP_MST &&
intel_phy_is_tc(dev_priv, phy))
intel_tc_port_sanitize(enc_to_dig_port(&encoder->base));
}
get_encoder_power_domains(dev_priv);
if (HAS_PCH_IBX(dev_priv))
ibx_sanitize_pch_ports(dev_priv);
/*
* intel_sanitize_plane_mapping() may need to do vblank
* waits, so we need vblank interrupts restored beforehand.
*/
for_each_intel_crtc(&dev_priv->drm, crtc) {
crtc_state = to_intel_crtc_state(crtc->base.state);
drm_crtc_vblank_reset(&crtc->base);
if (crtc_state->base.active)
intel_crtc_vblank_on(crtc_state);
}
intel_sanitize_plane_mapping(dev_priv);
for_each_intel_encoder(dev, encoder)
intel_sanitize_encoder(encoder);
for_each_intel_crtc(&dev_priv->drm, crtc) {
crtc_state = to_intel_crtc_state(crtc->base.state);
intel_sanitize_crtc(crtc, ctx);
intel_dump_pipe_config(crtc_state, NULL, "[setup_hw_state]");
}
intel_modeset_update_connector_atomic_state(dev);
for (i = 0; i < dev_priv->num_shared_dpll; i++) {
struct intel_shared_dpll *pll = &dev_priv->shared_dplls[i];
if (!pll->on || pll->active_mask)
continue;
DRM_DEBUG_KMS("%s enabled but not in use, disabling\n",
pll->info->name);
pll->info->funcs->disable(dev_priv, pll);
pll->on = false;
}
if (IS_G4X(dev_priv)) {
g4x_wm_get_hw_state(dev_priv);
g4x_wm_sanitize(dev_priv);
} else if (IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
vlv_wm_get_hw_state(dev_priv);
vlv_wm_sanitize(dev_priv);
} else if (INTEL_GEN(dev_priv) >= 9) {
skl_wm_get_hw_state(dev_priv);
} else if (HAS_PCH_SPLIT(dev_priv)) {
ilk_wm_get_hw_state(dev_priv);
}
for_each_intel_crtc(dev, crtc) {
u64 put_domains;
crtc_state = to_intel_crtc_state(crtc->base.state);
put_domains = modeset_get_crtc_power_domains(crtc_state);
if (WARN_ON(put_domains))
modeset_put_power_domains(dev_priv, put_domains);
}
intel_display_power_put(dev_priv, POWER_DOMAIN_INIT, wakeref);
intel_fbc_init_pipe_state(dev_priv);
}
void intel_display_resume(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = to_i915(dev);
struct drm_atomic_state *state = dev_priv->modeset_restore_state;
struct drm_modeset_acquire_ctx ctx;
int ret;
dev_priv->modeset_restore_state = NULL;
if (state)
state->acquire_ctx = &ctx;
drm_modeset_acquire_init(&ctx, 0);
while (1) {
ret = drm_modeset_lock_all_ctx(dev, &ctx);
if (ret != -EDEADLK)
break;
drm_modeset_backoff(&ctx);
}
if (!ret)
ret = __intel_display_resume(dev, state, &ctx);
intel_enable_ipc(dev_priv);
drm_modeset_drop_locks(&ctx);
drm_modeset_acquire_fini(&ctx);
if (ret)
DRM_ERROR("Restoring old state failed with %i\n", ret);
if (state)
drm_atomic_state_put(state);
}
static void intel_hpd_poll_fini(struct drm_i915_private *i915)
{
struct intel_connector *connector;
struct drm_connector_list_iter conn_iter;
/* Kill all the work that may have been queued by hpd. */
drm_connector_list_iter_begin(&i915->drm, &conn_iter);
for_each_intel_connector_iter(connector, &conn_iter) {
if (connector->modeset_retry_work.func)
cancel_work_sync(&connector->modeset_retry_work);
if (connector->hdcp.shim) {
cancel_delayed_work_sync(&connector->hdcp.check_work);
cancel_work_sync(&connector->hdcp.prop_work);
}
}
drm_connector_list_iter_end(&conn_iter);
}
void intel_modeset_driver_remove(struct drm_i915_private *i915)
{
flush_workqueue(i915->flip_wq);
flush_workqueue(i915->modeset_wq);
flush_work(&i915->atomic_helper.free_work);
WARN_ON(!llist_empty(&i915->atomic_helper.free_list));
/*
* Interrupts and polling as the first thing to avoid creating havoc.
* Too much stuff here (turning of connectors, ...) would
* experience fancy races otherwise.
*/
intel_irq_uninstall(i915);
/*
* Due to the hpd irq storm handling the hotplug work can re-arm the
* poll handlers. Hence disable polling after hpd handling is shut down.
*/
intel_hpd_poll_fini(i915);
/* poll work can call into fbdev, hence clean that up afterwards */
intel_fbdev_fini(i915);
intel_unregister_dsm_handler();
intel_fbc_global_disable(i915);
/* flush any delayed tasks or pending work */
flush_scheduled_work();
intel_hdcp_component_fini(i915);
drm_mode_config_cleanup(&i915->drm);
intel_overlay_cleanup(i915);
intel_gmbus_teardown(i915);
destroy_workqueue(i915->flip_wq);
destroy_workqueue(i915->modeset_wq);
intel_fbc_cleanup_cfb(i915);
}
#if IS_ENABLED(CONFIG_DRM_I915_CAPTURE_ERROR)
struct intel_display_error_state {
u32 power_well_driver;
struct intel_cursor_error_state {
u32 control;
u32 position;
u32 base;
u32 size;
} cursor[I915_MAX_PIPES];
struct intel_pipe_error_state {
bool power_domain_on;
u32 source;
u32 stat;
} pipe[I915_MAX_PIPES];
struct intel_plane_error_state {
u32 control;
u32 stride;
u32 size;
u32 pos;
u32 addr;
u32 surface;
u32 tile_offset;
} plane[I915_MAX_PIPES];
struct intel_transcoder_error_state {
bool available;
bool power_domain_on;
enum transcoder cpu_transcoder;
u32 conf;
u32 htotal;
u32 hblank;
u32 hsync;
u32 vtotal;
u32 vblank;
u32 vsync;
} transcoder[5];
};
struct intel_display_error_state *
intel_display_capture_error_state(struct drm_i915_private *dev_priv)
{
struct intel_display_error_state *error;
int transcoders[] = {
TRANSCODER_A,
TRANSCODER_B,
TRANSCODER_C,
TRANSCODER_D,
TRANSCODER_EDP,
};
int i;
BUILD_BUG_ON(ARRAY_SIZE(transcoders) != ARRAY_SIZE(error->transcoder));
if (!HAS_DISPLAY(dev_priv) || !INTEL_DISPLAY_ENABLED(dev_priv))
return NULL;
error = kzalloc(sizeof(*error), GFP_ATOMIC);
if (error == NULL)
return NULL;
if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
error->power_well_driver = I915_READ(HSW_PWR_WELL_CTL2);
for_each_pipe(dev_priv, i) {
error->pipe[i].power_domain_on =
__intel_display_power_is_enabled(dev_priv,
POWER_DOMAIN_PIPE(i));
if (!error->pipe[i].power_domain_on)
continue;
error->cursor[i].control = I915_READ(CURCNTR(i));
error->cursor[i].position = I915_READ(CURPOS(i));
error->cursor[i].base = I915_READ(CURBASE(i));
error->plane[i].control = I915_READ(DSPCNTR(i));
error->plane[i].stride = I915_READ(DSPSTRIDE(i));
if (INTEL_GEN(dev_priv) <= 3) {
error->plane[i].size = I915_READ(DSPSIZE(i));
error->plane[i].pos = I915_READ(DSPPOS(i));
}
if (INTEL_GEN(dev_priv) <= 7 && !IS_HASWELL(dev_priv))
error->plane[i].addr = I915_READ(DSPADDR(i));
if (INTEL_GEN(dev_priv) >= 4) {
error->plane[i].surface = I915_READ(DSPSURF(i));
error->plane[i].tile_offset = I915_READ(DSPTILEOFF(i));
}
error->pipe[i].source = I915_READ(PIPESRC(i));
if (HAS_GMCH(dev_priv))
error->pipe[i].stat = I915_READ(PIPESTAT(i));
}
for (i = 0; i < ARRAY_SIZE(error->transcoder); i++) {
enum transcoder cpu_transcoder = transcoders[i];
if (!INTEL_INFO(dev_priv)->trans_offsets[cpu_transcoder])
continue;
error->transcoder[i].available = true;
error->transcoder[i].power_domain_on =
__intel_display_power_is_enabled(dev_priv,
POWER_DOMAIN_TRANSCODER(cpu_transcoder));
if (!error->transcoder[i].power_domain_on)
continue;
error->transcoder[i].cpu_transcoder = cpu_transcoder;
error->transcoder[i].conf = I915_READ(PIPECONF(cpu_transcoder));
error->transcoder[i].htotal = I915_READ(HTOTAL(cpu_transcoder));
error->transcoder[i].hblank = I915_READ(HBLANK(cpu_transcoder));
error->transcoder[i].hsync = I915_READ(HSYNC(cpu_transcoder));
error->transcoder[i].vtotal = I915_READ(VTOTAL(cpu_transcoder));
error->transcoder[i].vblank = I915_READ(VBLANK(cpu_transcoder));
error->transcoder[i].vsync = I915_READ(VSYNC(cpu_transcoder));
}
return error;
}
#define err_printf(e, ...) i915_error_printf(e, __VA_ARGS__)
void
intel_display_print_error_state(struct drm_i915_error_state_buf *m,
struct intel_display_error_state *error)
{
struct drm_i915_private *dev_priv = m->i915;
int i;
if (!error)
return;
err_printf(m, "Num Pipes: %d\n", INTEL_NUM_PIPES(dev_priv));
if (IS_HASWELL(dev_priv) || IS_BROADWELL(dev_priv))
err_printf(m, "PWR_WELL_CTL2: %08x\n",
error->power_well_driver);
for_each_pipe(dev_priv, i) {
err_printf(m, "Pipe [%d]:\n", i);
err_printf(m, " Power: %s\n",
onoff(error->pipe[i].power_domain_on));
err_printf(m, " SRC: %08x\n", error->pipe[i].source);
err_printf(m, " STAT: %08x\n", error->pipe[i].stat);
err_printf(m, "Plane [%d]:\n", i);
err_printf(m, " CNTR: %08x\n", error->plane[i].control);
err_printf(m, " STRIDE: %08x\n", error->plane[i].stride);
if (INTEL_GEN(dev_priv) <= 3) {
err_printf(m, " SIZE: %08x\n", error->plane[i].size);
err_printf(m, " POS: %08x\n", error->plane[i].pos);
}
if (INTEL_GEN(dev_priv) <= 7 && !IS_HASWELL(dev_priv))
err_printf(m, " ADDR: %08x\n", error->plane[i].addr);
if (INTEL_GEN(dev_priv) >= 4) {
err_printf(m, " SURF: %08x\n", error->plane[i].surface);
err_printf(m, " TILEOFF: %08x\n", error->plane[i].tile_offset);
}
err_printf(m, "Cursor [%d]:\n", i);
err_printf(m, " CNTR: %08x\n", error->cursor[i].control);
err_printf(m, " POS: %08x\n", error->cursor[i].position);
err_printf(m, " BASE: %08x\n", error->cursor[i].base);
}
for (i = 0; i < ARRAY_SIZE(error->transcoder); i++) {
if (!error->transcoder[i].available)
continue;
err_printf(m, "CPU transcoder: %s\n",
transcoder_name(error->transcoder[i].cpu_transcoder));
err_printf(m, " Power: %s\n",
onoff(error->transcoder[i].power_domain_on));
err_printf(m, " CONF: %08x\n", error->transcoder[i].conf);
err_printf(m, " HTOTAL: %08x\n", error->transcoder[i].htotal);
err_printf(m, " HBLANK: %08x\n", error->transcoder[i].hblank);
err_printf(m, " HSYNC: %08x\n", error->transcoder[i].hsync);
err_printf(m, " VTOTAL: %08x\n", error->transcoder[i].vtotal);
err_printf(m, " VBLANK: %08x\n", error->transcoder[i].vblank);
err_printf(m, " VSYNC: %08x\n", error->transcoder[i].vsync);
}
}
#endif
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