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linux_dsm_epyc7002/drivers/gpu/drm/i915/intel_display.c
Shaohua Li 311089d3d3 drm/i915: use msleep for intel_wait_for_vblank 
20ms delay is quite big and the routine isn't called in atomic context.
better use msleep to let other tasks run. This can reduce cpu time used
by Xorg, so potentially boost boot.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2009-11-30 09:39:57 -08:00

4627 lines
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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/module.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/kernel.h>
#include "drmP.h"
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
#include "intel_dp.h"
#include "drm_crtc_helper.h"
#define HAS_eDP (intel_pipe_has_type(crtc, INTEL_OUTPUT_EDP))
bool intel_pipe_has_type (struct drm_crtc *crtc, int type);
static void intel_update_watermarks(struct drm_device *dev);
static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule);
typedef struct {
/* given values */
int n;
int m1, m2;
int p1, p2;
/* derived values */
int dot;
int vco;
int m;
int p;
} intel_clock_t;
typedef struct {
int min, max;
} intel_range_t;
typedef struct {
int dot_limit;
int p2_slow, p2_fast;
} intel_p2_t;
#define INTEL_P2_NUM 2
typedef struct intel_limit intel_limit_t;
struct intel_limit {
intel_range_t dot, vco, n, m, m1, m2, p, p1;
intel_p2_t p2;
bool (* find_pll)(const intel_limit_t *, struct drm_crtc *,
int, int, intel_clock_t *);
bool (* find_reduced_pll)(const intel_limit_t *, struct drm_crtc *,
int, int, intel_clock_t *);
};
#define I8XX_DOT_MIN 25000
#define I8XX_DOT_MAX 350000
#define I8XX_VCO_MIN 930000
#define I8XX_VCO_MAX 1400000
#define I8XX_N_MIN 3
#define I8XX_N_MAX 16
#define I8XX_M_MIN 96
#define I8XX_M_MAX 140
#define I8XX_M1_MIN 18
#define I8XX_M1_MAX 26
#define I8XX_M2_MIN 6
#define I8XX_M2_MAX 16
#define I8XX_P_MIN 4
#define I8XX_P_MAX 128
#define I8XX_P1_MIN 2
#define I8XX_P1_MAX 33
#define I8XX_P1_LVDS_MIN 1
#define I8XX_P1_LVDS_MAX 6
#define I8XX_P2_SLOW 4
#define I8XX_P2_FAST 2
#define I8XX_P2_LVDS_SLOW 14
#define I8XX_P2_LVDS_FAST 7
#define I8XX_P2_SLOW_LIMIT 165000
#define I9XX_DOT_MIN 20000
#define I9XX_DOT_MAX 400000
#define I9XX_VCO_MIN 1400000
#define I9XX_VCO_MAX 2800000
#define IGD_VCO_MIN 1700000
#define IGD_VCO_MAX 3500000
#define I9XX_N_MIN 1
#define I9XX_N_MAX 6
/* IGD's Ncounter is a ring counter */
#define IGD_N_MIN 3
#define IGD_N_MAX 6
#define I9XX_M_MIN 70
#define I9XX_M_MAX 120
#define IGD_M_MIN 2
#define IGD_M_MAX 256
#define I9XX_M1_MIN 10
#define I9XX_M1_MAX 22
#define I9XX_M2_MIN 5
#define I9XX_M2_MAX 9
/* IGD M1 is reserved, and must be 0 */
#define IGD_M1_MIN 0
#define IGD_M1_MAX 0
#define IGD_M2_MIN 0
#define IGD_M2_MAX 254
#define I9XX_P_SDVO_DAC_MIN 5
#define I9XX_P_SDVO_DAC_MAX 80
#define I9XX_P_LVDS_MIN 7
#define I9XX_P_LVDS_MAX 98
#define IGD_P_LVDS_MIN 7
#define IGD_P_LVDS_MAX 112
#define I9XX_P1_MIN 1
#define I9XX_P1_MAX 8
#define I9XX_P2_SDVO_DAC_SLOW 10
#define I9XX_P2_SDVO_DAC_FAST 5
#define I9XX_P2_SDVO_DAC_SLOW_LIMIT 200000
#define I9XX_P2_LVDS_SLOW 14
#define I9XX_P2_LVDS_FAST 7
#define I9XX_P2_LVDS_SLOW_LIMIT 112000
/*The parameter is for SDVO on G4x platform*/
#define G4X_DOT_SDVO_MIN 25000
#define G4X_DOT_SDVO_MAX 270000
#define G4X_VCO_MIN 1750000
#define G4X_VCO_MAX 3500000
#define G4X_N_SDVO_MIN 1
#define G4X_N_SDVO_MAX 4
#define G4X_M_SDVO_MIN 104
#define G4X_M_SDVO_MAX 138
#define G4X_M1_SDVO_MIN 17
#define G4X_M1_SDVO_MAX 23
#define G4X_M2_SDVO_MIN 5
#define G4X_M2_SDVO_MAX 11
#define G4X_P_SDVO_MIN 10
#define G4X_P_SDVO_MAX 30
#define G4X_P1_SDVO_MIN 1
#define G4X_P1_SDVO_MAX 3
#define G4X_P2_SDVO_SLOW 10
#define G4X_P2_SDVO_FAST 10
#define G4X_P2_SDVO_LIMIT 270000
/*The parameter is for HDMI_DAC on G4x platform*/
#define G4X_DOT_HDMI_DAC_MIN 22000
#define G4X_DOT_HDMI_DAC_MAX 400000
#define G4X_N_HDMI_DAC_MIN 1
#define G4X_N_HDMI_DAC_MAX 4
#define G4X_M_HDMI_DAC_MIN 104
#define G4X_M_HDMI_DAC_MAX 138
#define G4X_M1_HDMI_DAC_MIN 16
#define G4X_M1_HDMI_DAC_MAX 23
#define G4X_M2_HDMI_DAC_MIN 5
#define G4X_M2_HDMI_DAC_MAX 11
#define G4X_P_HDMI_DAC_MIN 5
#define G4X_P_HDMI_DAC_MAX 80
#define G4X_P1_HDMI_DAC_MIN 1
#define G4X_P1_HDMI_DAC_MAX 8
#define G4X_P2_HDMI_DAC_SLOW 10
#define G4X_P2_HDMI_DAC_FAST 5
#define G4X_P2_HDMI_DAC_LIMIT 165000
/*The parameter is for SINGLE_CHANNEL_LVDS on G4x platform*/
#define G4X_DOT_SINGLE_CHANNEL_LVDS_MIN 20000
#define G4X_DOT_SINGLE_CHANNEL_LVDS_MAX 115000
#define G4X_N_SINGLE_CHANNEL_LVDS_MIN 1
#define G4X_N_SINGLE_CHANNEL_LVDS_MAX 3
#define G4X_M_SINGLE_CHANNEL_LVDS_MIN 104
#define G4X_M_SINGLE_CHANNEL_LVDS_MAX 138
#define G4X_M1_SINGLE_CHANNEL_LVDS_MIN 17
#define G4X_M1_SINGLE_CHANNEL_LVDS_MAX 23
#define G4X_M2_SINGLE_CHANNEL_LVDS_MIN 5
#define G4X_M2_SINGLE_CHANNEL_LVDS_MAX 11
#define G4X_P_SINGLE_CHANNEL_LVDS_MIN 28
#define G4X_P_SINGLE_CHANNEL_LVDS_MAX 112
#define G4X_P1_SINGLE_CHANNEL_LVDS_MIN 2
#define G4X_P1_SINGLE_CHANNEL_LVDS_MAX 8
#define G4X_P2_SINGLE_CHANNEL_LVDS_SLOW 14
#define G4X_P2_SINGLE_CHANNEL_LVDS_FAST 14
#define G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT 0
/*The parameter is for DUAL_CHANNEL_LVDS on G4x platform*/
#define G4X_DOT_DUAL_CHANNEL_LVDS_MIN 80000
#define G4X_DOT_DUAL_CHANNEL_LVDS_MAX 224000
#define G4X_N_DUAL_CHANNEL_LVDS_MIN 1
#define G4X_N_DUAL_CHANNEL_LVDS_MAX 3
#define G4X_M_DUAL_CHANNEL_LVDS_MIN 104
#define G4X_M_DUAL_CHANNEL_LVDS_MAX 138
#define G4X_M1_DUAL_CHANNEL_LVDS_MIN 17
#define G4X_M1_DUAL_CHANNEL_LVDS_MAX 23
#define G4X_M2_DUAL_CHANNEL_LVDS_MIN 5
#define G4X_M2_DUAL_CHANNEL_LVDS_MAX 11
#define G4X_P_DUAL_CHANNEL_LVDS_MIN 14
#define G4X_P_DUAL_CHANNEL_LVDS_MAX 42
#define G4X_P1_DUAL_CHANNEL_LVDS_MIN 2
#define G4X_P1_DUAL_CHANNEL_LVDS_MAX 6
#define G4X_P2_DUAL_CHANNEL_LVDS_SLOW 7
#define G4X_P2_DUAL_CHANNEL_LVDS_FAST 7
#define G4X_P2_DUAL_CHANNEL_LVDS_LIMIT 0
/*The parameter is for DISPLAY PORT on G4x platform*/
#define G4X_DOT_DISPLAY_PORT_MIN 161670
#define G4X_DOT_DISPLAY_PORT_MAX 227000
#define G4X_N_DISPLAY_PORT_MIN 1
#define G4X_N_DISPLAY_PORT_MAX 2
#define G4X_M_DISPLAY_PORT_MIN 97
#define G4X_M_DISPLAY_PORT_MAX 108
#define G4X_M1_DISPLAY_PORT_MIN 0x10
#define G4X_M1_DISPLAY_PORT_MAX 0x12
#define G4X_M2_DISPLAY_PORT_MIN 0x05
#define G4X_M2_DISPLAY_PORT_MAX 0x06
#define G4X_P_DISPLAY_PORT_MIN 10
#define G4X_P_DISPLAY_PORT_MAX 20
#define G4X_P1_DISPLAY_PORT_MIN 1
#define G4X_P1_DISPLAY_PORT_MAX 2
#define G4X_P2_DISPLAY_PORT_SLOW 10
#define G4X_P2_DISPLAY_PORT_FAST 10
#define G4X_P2_DISPLAY_PORT_LIMIT 0
/* IGDNG */
/* as we calculate clock using (register_value + 2) for
N/M1/M2, so here the range value for them is (actual_value-2).
*/
#define IGDNG_DOT_MIN 25000
#define IGDNG_DOT_MAX 350000
#define IGDNG_VCO_MIN 1760000
#define IGDNG_VCO_MAX 3510000
#define IGDNG_N_MIN 1
#define IGDNG_N_MAX 5
#define IGDNG_M_MIN 79
#define IGDNG_M_MAX 118
#define IGDNG_M1_MIN 12
#define IGDNG_M1_MAX 23
#define IGDNG_M2_MIN 5
#define IGDNG_M2_MAX 9
#define IGDNG_P_SDVO_DAC_MIN 5
#define IGDNG_P_SDVO_DAC_MAX 80
#define IGDNG_P_LVDS_MIN 28
#define IGDNG_P_LVDS_MAX 112
#define IGDNG_P1_MIN 1
#define IGDNG_P1_MAX 8
#define IGDNG_P2_SDVO_DAC_SLOW 10
#define IGDNG_P2_SDVO_DAC_FAST 5
#define IGDNG_P2_LVDS_SLOW 14 /* single channel */
#define IGDNG_P2_LVDS_FAST 7 /* double channel */
#define IGDNG_P2_DOT_LIMIT 225000 /* 225Mhz */
static bool
intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static bool
intel_find_best_reduced_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static bool
intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static bool
intel_igdng_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static bool
intel_find_pll_g4x_dp(const intel_limit_t *, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static bool
intel_find_pll_igdng_dp(const intel_limit_t *, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock);
static const intel_limit_t intel_limits_i8xx_dvo = {
.dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
.vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
.n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
.m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
.m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
.m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
.p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
.p1 = { .min = I8XX_P1_MIN, .max = I8XX_P1_MAX },
.p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
.p2_slow = I8XX_P2_SLOW, .p2_fast = I8XX_P2_FAST },
.find_pll = intel_find_best_PLL,
.find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_i8xx_lvds = {
.dot = { .min = I8XX_DOT_MIN, .max = I8XX_DOT_MAX },
.vco = { .min = I8XX_VCO_MIN, .max = I8XX_VCO_MAX },
.n = { .min = I8XX_N_MIN, .max = I8XX_N_MAX },
.m = { .min = I8XX_M_MIN, .max = I8XX_M_MAX },
.m1 = { .min = I8XX_M1_MIN, .max = I8XX_M1_MAX },
.m2 = { .min = I8XX_M2_MIN, .max = I8XX_M2_MAX },
.p = { .min = I8XX_P_MIN, .max = I8XX_P_MAX },
.p1 = { .min = I8XX_P1_LVDS_MIN, .max = I8XX_P1_LVDS_MAX },
.p2 = { .dot_limit = I8XX_P2_SLOW_LIMIT,
.p2_slow = I8XX_P2_LVDS_SLOW, .p2_fast = I8XX_P2_LVDS_FAST },
.find_pll = intel_find_best_PLL,
.find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_i9xx_sdvo = {
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
.vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
.n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
.m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
.m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
.m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
.p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
.p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
.p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
.find_pll = intel_find_best_PLL,
.find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_i9xx_lvds = {
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
.vco = { .min = I9XX_VCO_MIN, .max = I9XX_VCO_MAX },
.n = { .min = I9XX_N_MIN, .max = I9XX_N_MAX },
.m = { .min = I9XX_M_MIN, .max = I9XX_M_MAX },
.m1 = { .min = I9XX_M1_MIN, .max = I9XX_M1_MAX },
.m2 = { .min = I9XX_M2_MIN, .max = I9XX_M2_MAX },
.p = { .min = I9XX_P_LVDS_MIN, .max = I9XX_P_LVDS_MAX },
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
/* The single-channel range is 25-112Mhz, and dual-channel
* is 80-224Mhz. Prefer single channel as much as possible.
*/
.p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
.p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_FAST },
.find_pll = intel_find_best_PLL,
.find_reduced_pll = intel_find_best_reduced_PLL,
};
/* below parameter and function is for G4X Chipset Family*/
static const intel_limit_t intel_limits_g4x_sdvo = {
.dot = { .min = G4X_DOT_SDVO_MIN, .max = G4X_DOT_SDVO_MAX },
.vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
.n = { .min = G4X_N_SDVO_MIN, .max = G4X_N_SDVO_MAX },
.m = { .min = G4X_M_SDVO_MIN, .max = G4X_M_SDVO_MAX },
.m1 = { .min = G4X_M1_SDVO_MIN, .max = G4X_M1_SDVO_MAX },
.m2 = { .min = G4X_M2_SDVO_MIN, .max = G4X_M2_SDVO_MAX },
.p = { .min = G4X_P_SDVO_MIN, .max = G4X_P_SDVO_MAX },
.p1 = { .min = G4X_P1_SDVO_MIN, .max = G4X_P1_SDVO_MAX},
.p2 = { .dot_limit = G4X_P2_SDVO_LIMIT,
.p2_slow = G4X_P2_SDVO_SLOW,
.p2_fast = G4X_P2_SDVO_FAST
},
.find_pll = intel_g4x_find_best_PLL,
.find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_hdmi = {
.dot = { .min = G4X_DOT_HDMI_DAC_MIN, .max = G4X_DOT_HDMI_DAC_MAX },
.vco = { .min = G4X_VCO_MIN, .max = G4X_VCO_MAX},
.n = { .min = G4X_N_HDMI_DAC_MIN, .max = G4X_N_HDMI_DAC_MAX },
.m = { .min = G4X_M_HDMI_DAC_MIN, .max = G4X_M_HDMI_DAC_MAX },
.m1 = { .min = G4X_M1_HDMI_DAC_MIN, .max = G4X_M1_HDMI_DAC_MAX },
.m2 = { .min = G4X_M2_HDMI_DAC_MIN, .max = G4X_M2_HDMI_DAC_MAX },
.p = { .min = G4X_P_HDMI_DAC_MIN, .max = G4X_P_HDMI_DAC_MAX },
.p1 = { .min = G4X_P1_HDMI_DAC_MIN, .max = G4X_P1_HDMI_DAC_MAX},
.p2 = { .dot_limit = G4X_P2_HDMI_DAC_LIMIT,
.p2_slow = G4X_P2_HDMI_DAC_SLOW,
.p2_fast = G4X_P2_HDMI_DAC_FAST
},
.find_pll = intel_g4x_find_best_PLL,
.find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_single_channel_lvds = {
.dot = { .min = G4X_DOT_SINGLE_CHANNEL_LVDS_MIN,
.max = G4X_DOT_SINGLE_CHANNEL_LVDS_MAX },
.vco = { .min = G4X_VCO_MIN,
.max = G4X_VCO_MAX },
.n = { .min = G4X_N_SINGLE_CHANNEL_LVDS_MIN,
.max = G4X_N_SINGLE_CHANNEL_LVDS_MAX },
.m = { .min = G4X_M_SINGLE_CHANNEL_LVDS_MIN,
.max = G4X_M_SINGLE_CHANNEL_LVDS_MAX },
.m1 = { .min = G4X_M1_SINGLE_CHANNEL_LVDS_MIN,
.max = G4X_M1_SINGLE_CHANNEL_LVDS_MAX },
.m2 = { .min = G4X_M2_SINGLE_CHANNEL_LVDS_MIN,
.max = G4X_M2_SINGLE_CHANNEL_LVDS_MAX },
.p = { .min = G4X_P_SINGLE_CHANNEL_LVDS_MIN,
.max = G4X_P_SINGLE_CHANNEL_LVDS_MAX },
.p1 = { .min = G4X_P1_SINGLE_CHANNEL_LVDS_MIN,
.max = G4X_P1_SINGLE_CHANNEL_LVDS_MAX },
.p2 = { .dot_limit = G4X_P2_SINGLE_CHANNEL_LVDS_LIMIT,
.p2_slow = G4X_P2_SINGLE_CHANNEL_LVDS_SLOW,
.p2_fast = G4X_P2_SINGLE_CHANNEL_LVDS_FAST
},
.find_pll = intel_g4x_find_best_PLL,
.find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_dual_channel_lvds = {
.dot = { .min = G4X_DOT_DUAL_CHANNEL_LVDS_MIN,
.max = G4X_DOT_DUAL_CHANNEL_LVDS_MAX },
.vco = { .min = G4X_VCO_MIN,
.max = G4X_VCO_MAX },
.n = { .min = G4X_N_DUAL_CHANNEL_LVDS_MIN,
.max = G4X_N_DUAL_CHANNEL_LVDS_MAX },
.m = { .min = G4X_M_DUAL_CHANNEL_LVDS_MIN,
.max = G4X_M_DUAL_CHANNEL_LVDS_MAX },
.m1 = { .min = G4X_M1_DUAL_CHANNEL_LVDS_MIN,
.max = G4X_M1_DUAL_CHANNEL_LVDS_MAX },
.m2 = { .min = G4X_M2_DUAL_CHANNEL_LVDS_MIN,
.max = G4X_M2_DUAL_CHANNEL_LVDS_MAX },
.p = { .min = G4X_P_DUAL_CHANNEL_LVDS_MIN,
.max = G4X_P_DUAL_CHANNEL_LVDS_MAX },
.p1 = { .min = G4X_P1_DUAL_CHANNEL_LVDS_MIN,
.max = G4X_P1_DUAL_CHANNEL_LVDS_MAX },
.p2 = { .dot_limit = G4X_P2_DUAL_CHANNEL_LVDS_LIMIT,
.p2_slow = G4X_P2_DUAL_CHANNEL_LVDS_SLOW,
.p2_fast = G4X_P2_DUAL_CHANNEL_LVDS_FAST
},
.find_pll = intel_g4x_find_best_PLL,
.find_reduced_pll = intel_g4x_find_best_PLL,
};
static const intel_limit_t intel_limits_g4x_display_port = {
.dot = { .min = G4X_DOT_DISPLAY_PORT_MIN,
.max = G4X_DOT_DISPLAY_PORT_MAX },
.vco = { .min = G4X_VCO_MIN,
.max = G4X_VCO_MAX},
.n = { .min = G4X_N_DISPLAY_PORT_MIN,
.max = G4X_N_DISPLAY_PORT_MAX },
.m = { .min = G4X_M_DISPLAY_PORT_MIN,
.max = G4X_M_DISPLAY_PORT_MAX },
.m1 = { .min = G4X_M1_DISPLAY_PORT_MIN,
.max = G4X_M1_DISPLAY_PORT_MAX },
.m2 = { .min = G4X_M2_DISPLAY_PORT_MIN,
.max = G4X_M2_DISPLAY_PORT_MAX },
.p = { .min = G4X_P_DISPLAY_PORT_MIN,
.max = G4X_P_DISPLAY_PORT_MAX },
.p1 = { .min = G4X_P1_DISPLAY_PORT_MIN,
.max = G4X_P1_DISPLAY_PORT_MAX},
.p2 = { .dot_limit = G4X_P2_DISPLAY_PORT_LIMIT,
.p2_slow = G4X_P2_DISPLAY_PORT_SLOW,
.p2_fast = G4X_P2_DISPLAY_PORT_FAST },
.find_pll = intel_find_pll_g4x_dp,
};
static const intel_limit_t intel_limits_igd_sdvo = {
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX},
.vco = { .min = IGD_VCO_MIN, .max = IGD_VCO_MAX },
.n = { .min = IGD_N_MIN, .max = IGD_N_MAX },
.m = { .min = IGD_M_MIN, .max = IGD_M_MAX },
.m1 = { .min = IGD_M1_MIN, .max = IGD_M1_MAX },
.m2 = { .min = IGD_M2_MIN, .max = IGD_M2_MAX },
.p = { .min = I9XX_P_SDVO_DAC_MIN, .max = I9XX_P_SDVO_DAC_MAX },
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
.p2 = { .dot_limit = I9XX_P2_SDVO_DAC_SLOW_LIMIT,
.p2_slow = I9XX_P2_SDVO_DAC_SLOW, .p2_fast = I9XX_P2_SDVO_DAC_FAST },
.find_pll = intel_find_best_PLL,
.find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_igd_lvds = {
.dot = { .min = I9XX_DOT_MIN, .max = I9XX_DOT_MAX },
.vco = { .min = IGD_VCO_MIN, .max = IGD_VCO_MAX },
.n = { .min = IGD_N_MIN, .max = IGD_N_MAX },
.m = { .min = IGD_M_MIN, .max = IGD_M_MAX },
.m1 = { .min = IGD_M1_MIN, .max = IGD_M1_MAX },
.m2 = { .min = IGD_M2_MIN, .max = IGD_M2_MAX },
.p = { .min = IGD_P_LVDS_MIN, .max = IGD_P_LVDS_MAX },
.p1 = { .min = I9XX_P1_MIN, .max = I9XX_P1_MAX },
/* IGD only supports single-channel mode. */
.p2 = { .dot_limit = I9XX_P2_LVDS_SLOW_LIMIT,
.p2_slow = I9XX_P2_LVDS_SLOW, .p2_fast = I9XX_P2_LVDS_SLOW },
.find_pll = intel_find_best_PLL,
.find_reduced_pll = intel_find_best_reduced_PLL,
};
static const intel_limit_t intel_limits_igdng_sdvo = {
.dot = { .min = IGDNG_DOT_MIN, .max = IGDNG_DOT_MAX },
.vco = { .min = IGDNG_VCO_MIN, .max = IGDNG_VCO_MAX },
.n = { .min = IGDNG_N_MIN, .max = IGDNG_N_MAX },
.m = { .min = IGDNG_M_MIN, .max = IGDNG_M_MAX },
.m1 = { .min = IGDNG_M1_MIN, .max = IGDNG_M1_MAX },
.m2 = { .min = IGDNG_M2_MIN, .max = IGDNG_M2_MAX },
.p = { .min = IGDNG_P_SDVO_DAC_MIN, .max = IGDNG_P_SDVO_DAC_MAX },
.p1 = { .min = IGDNG_P1_MIN, .max = IGDNG_P1_MAX },
.p2 = { .dot_limit = IGDNG_P2_DOT_LIMIT,
.p2_slow = IGDNG_P2_SDVO_DAC_SLOW,
.p2_fast = IGDNG_P2_SDVO_DAC_FAST },
.find_pll = intel_igdng_find_best_PLL,
};
static const intel_limit_t intel_limits_igdng_lvds = {
.dot = { .min = IGDNG_DOT_MIN, .max = IGDNG_DOT_MAX },
.vco = { .min = IGDNG_VCO_MIN, .max = IGDNG_VCO_MAX },
.n = { .min = IGDNG_N_MIN, .max = IGDNG_N_MAX },
.m = { .min = IGDNG_M_MIN, .max = IGDNG_M_MAX },
.m1 = { .min = IGDNG_M1_MIN, .max = IGDNG_M1_MAX },
.m2 = { .min = IGDNG_M2_MIN, .max = IGDNG_M2_MAX },
.p = { .min = IGDNG_P_LVDS_MIN, .max = IGDNG_P_LVDS_MAX },
.p1 = { .min = IGDNG_P1_MIN, .max = IGDNG_P1_MAX },
.p2 = { .dot_limit = IGDNG_P2_DOT_LIMIT,
.p2_slow = IGDNG_P2_LVDS_SLOW,
.p2_fast = IGDNG_P2_LVDS_FAST },
.find_pll = intel_igdng_find_best_PLL,
};
static const intel_limit_t *intel_igdng_limit(struct drm_crtc *crtc)
{
const intel_limit_t *limit;
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
limit = &intel_limits_igdng_lvds;
else
limit = &intel_limits_igdng_sdvo;
return limit;
}
static const intel_limit_t *intel_g4x_limit(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
const intel_limit_t *limit;
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
LVDS_CLKB_POWER_UP)
/* LVDS with dual channel */
limit = &intel_limits_g4x_dual_channel_lvds;
else
/* LVDS with dual channel */
limit = &intel_limits_g4x_single_channel_lvds;
} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI) ||
intel_pipe_has_type(crtc, INTEL_OUTPUT_ANALOG)) {
limit = &intel_limits_g4x_hdmi;
} else if (intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO)) {
limit = &intel_limits_g4x_sdvo;
} else if (intel_pipe_has_type (crtc, INTEL_OUTPUT_DISPLAYPORT)) {
limit = &intel_limits_g4x_display_port;
} else /* The option is for other outputs */
limit = &intel_limits_i9xx_sdvo;
return limit;
}
static const intel_limit_t *intel_limit(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
const intel_limit_t *limit;
if (IS_IGDNG(dev))
limit = intel_igdng_limit(crtc);
else if (IS_G4X(dev)) {
limit = intel_g4x_limit(crtc);
} else if (IS_I9XX(dev) && !IS_IGD(dev)) {
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
limit = &intel_limits_i9xx_lvds;
else
limit = &intel_limits_i9xx_sdvo;
} else if (IS_IGD(dev)) {
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
limit = &intel_limits_igd_lvds;
else
limit = &intel_limits_igd_sdvo;
} else {
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
limit = &intel_limits_i8xx_lvds;
else
limit = &intel_limits_i8xx_dvo;
}
return limit;
}
/* m1 is reserved as 0 in IGD, n is a ring counter */
static void igd_clock(int refclk, intel_clock_t *clock)
{
clock->m = clock->m2 + 2;
clock->p = clock->p1 * clock->p2;
clock->vco = refclk * clock->m / clock->n;
clock->dot = clock->vco / clock->p;
}
static void intel_clock(struct drm_device *dev, int refclk, intel_clock_t *clock)
{
if (IS_IGD(dev)) {
igd_clock(refclk, clock);
return;
}
clock->m = 5 * (clock->m1 + 2) + (clock->m2 + 2);
clock->p = clock->p1 * clock->p2;
clock->vco = refclk * clock->m / (clock->n + 2);
clock->dot = clock->vco / clock->p;
}
/**
* Returns whether any output on the specified pipe is of the specified type
*/
bool intel_pipe_has_type (struct drm_crtc *crtc, int type)
{
struct drm_device *dev = crtc->dev;
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *l_entry;
list_for_each_entry(l_entry, &mode_config->connector_list, head) {
if (l_entry->encoder &&
l_entry->encoder->crtc == crtc) {
struct intel_output *intel_output = to_intel_output(l_entry);
if (intel_output->type == type)
return true;
}
}
return false;
}
struct drm_connector *
intel_pipe_get_output (struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *l_entry, *ret = NULL;
list_for_each_entry(l_entry, &mode_config->connector_list, head) {
if (l_entry->encoder &&
l_entry->encoder->crtc == crtc) {
ret = l_entry;
break;
}
}
return ret;
}
#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_crtc *crtc, intel_clock_t *clock)
{
const intel_limit_t *limit = intel_limit (crtc);
struct drm_device *dev = crtc->dev;
if (clock->p1 < limit->p1.min || limit->p1.max < clock->p1)
INTELPllInvalid ("p1 out of range\n");
if (clock->p < limit->p.min || limit->p.max < clock->p)
INTELPllInvalid ("p 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 (clock->m1 <= clock->m2 && !IS_IGD(dev))
INTELPllInvalid ("m1 <= m2\n");
if (clock->m < limit->m.min || limit->m.max < clock->m)
INTELPllInvalid ("m out of range\n");
if (clock->n < limit->n.min || limit->n.max < clock->n)
INTELPllInvalid ("n 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 bool
intel_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
intel_clock_t clock;
int err = target;
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS) &&
(I915_READ(LVDS)) != 0) {
/*
* For LVDS, if the panel is on, 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 ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
LVDS_CLKB_POWER_UP)
clock.p2 = limit->p2.p2_fast;
else
clock.p2 = limit->p2.p2_slow;
} else {
if (target < limit->p2.dot_limit)
clock.p2 = limit->p2.p2_slow;
else
clock.p2 = limit->p2.p2_fast;
}
memset (best_clock, 0, sizeof (*best_clock));
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++) {
/* m1 is always 0 in IGD */
if (clock.m2 >= clock.m1 && !IS_IGD(dev))
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;
intel_clock(dev, refclk, &clock);
if (!intel_PLL_is_valid(crtc, &clock))
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
}
}
}
}
}
return (err != target);
}
static bool
intel_find_best_reduced_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock)
{
struct drm_device *dev = crtc->dev;
intel_clock_t clock;
int err = target;
bool found = false;
memcpy(&clock, best_clock, sizeof(intel_clock_t));
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++) {
/* m1 is always 0 in IGD */
if (clock.m2 >= clock.m1 && !IS_IGD(dev))
break;
for (clock.n = limit->n.min; clock.n <= limit->n.max;
clock.n++) {
int this_err;
intel_clock(dev, refclk, &clock);
if (!intel_PLL_is_valid(crtc, &clock))
continue;
this_err = abs(clock.dot - target);
if (this_err < err) {
*best_clock = clock;
err = this_err;
found = true;
}
}
}
}
return found;
}
static bool
intel_g4x_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
intel_clock_t clock;
int max_n;
bool found;
/* approximately equals target * 0.00488 */
int err_most = (target >> 8) + (target >> 10);
found = false;
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
if ((I915_READ(LVDS) & LVDS_CLKB_POWER_MASK) ==
LVDS_CLKB_POWER_UP)
clock.p2 = limit->p2.p2_fast;
else
clock.p2 = limit->p2.p2_slow;
} else {
if (target < limit->p2.dot_limit)
clock.p2 = limit->p2.p2_slow;
else
clock.p2 = limit->p2.p2_fast;
}
memset(best_clock, 0, sizeof(*best_clock));
max_n = limit->n.max;
/* based on hardware requriment prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= max_n; clock.n++) {
/* based on hardware requirment 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;
intel_clock(dev, refclk, &clock);
if (!intel_PLL_is_valid(crtc, &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;
}
static bool
intel_find_pll_igdng_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock)
{
struct drm_device *dev = crtc->dev;
intel_clock_t clock;
if (target < 200000) {
clock.n = 1;
clock.p1 = 2;
clock.p2 = 10;
clock.m1 = 12;
clock.m2 = 9;
} else {
clock.n = 2;
clock.p1 = 1;
clock.p2 = 10;
clock.m1 = 14;
clock.m2 = 8;
}
intel_clock(dev, refclk, &clock);
memcpy(best_clock, &clock, sizeof(intel_clock_t));
return true;
}
static bool
intel_igdng_find_best_PLL(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
intel_clock_t clock;
int err_most = 47;
int err_min = 10000;
/* eDP has only 2 clock choice, no n/m/p setting */
if (HAS_eDP)
return true;
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
return intel_find_pll_igdng_dp(limit, crtc, target,
refclk, best_clock);
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
if ((I915_READ(PCH_LVDS) & LVDS_CLKB_POWER_MASK) ==
LVDS_CLKB_POWER_UP)
clock.p2 = limit->p2.p2_fast;
else
clock.p2 = limit->p2.p2_slow;
} else {
if (target < limit->p2.dot_limit)
clock.p2 = limit->p2.p2_slow;
else
clock.p2 = limit->p2.p2_fast;
}
memset(best_clock, 0, sizeof(*best_clock));
for (clock.p1 = limit->p1.max; clock.p1 >= limit->p1.min; clock.p1--) {
/* based on hardware requriment prefer smaller n to precision */
for (clock.n = limit->n.min; clock.n <= limit->n.max; clock.n++) {
/* based on hardware requirment 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--) {
int this_err;
intel_clock(dev, refclk, &clock);
if (!intel_PLL_is_valid(crtc, &clock))
continue;
this_err = abs((10000 - (target*10000/clock.dot)));
if (this_err < err_most) {
*best_clock = clock;
/* found on first matching */
goto out;
} else if (this_err < err_min) {
*best_clock = clock;
err_min = this_err;
}
}
}
}
}
out:
return true;
}
/* DisplayPort has only two frequencies, 162MHz and 270MHz */
static bool
intel_find_pll_g4x_dp(const intel_limit_t *limit, struct drm_crtc *crtc,
int target, int refclk, intel_clock_t *best_clock)
{
intel_clock_t clock;
if (target < 200000) {
clock.p1 = 2;
clock.p2 = 10;
clock.n = 2;
clock.m1 = 23;
clock.m2 = 8;
} else {
clock.p1 = 1;
clock.p2 = 10;
clock.n = 1;
clock.m1 = 14;
clock.m2 = 2;
}
clock.m = 5 * (clock.m1 + 2) + (clock.m2 + 2);
clock.p = (clock.p1 * clock.p2);
clock.dot = 96000 * clock.m / (clock.n + 2) / clock.p;
clock.vco = 0;
memcpy(best_clock, &clock, sizeof(intel_clock_t));
return true;
}
void
intel_wait_for_vblank(struct drm_device *dev)
{
/* Wait for 20ms, i.e. one cycle at 50hz. */
msleep(20);
}
/* Parameters have changed, update FBC info */
static void i8xx_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_framebuffer *fb = crtc->fb;
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct drm_i915_gem_object *obj_priv = intel_fb->obj->driver_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int plane, i;
u32 fbc_ctl, fbc_ctl2;
dev_priv->cfb_pitch = dev_priv->cfb_size / FBC_LL_SIZE;
if (fb->pitch < dev_priv->cfb_pitch)
dev_priv->cfb_pitch = fb->pitch;
/* FBC_CTL wants 64B units */
dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
dev_priv->cfb_fence = obj_priv->fence_reg;
dev_priv->cfb_plane = intel_crtc->plane;
plane = dev_priv->cfb_plane == 0 ? FBC_CTL_PLANEA : FBC_CTL_PLANEB;
/* Clear old tags */
for (i = 0; i < (FBC_LL_SIZE / 32) + 1; i++)
I915_WRITE(FBC_TAG + (i * 4), 0);
/* Set it up... */
fbc_ctl2 = FBC_CTL_FENCE_DBL | FBC_CTL_IDLE_IMM | plane;
if (obj_priv->tiling_mode != I915_TILING_NONE)
fbc_ctl2 |= FBC_CTL_CPU_FENCE;
I915_WRITE(FBC_CONTROL2, fbc_ctl2);
I915_WRITE(FBC_FENCE_OFF, crtc->y);
/* enable it... */
fbc_ctl = FBC_CTL_EN | FBC_CTL_PERIODIC;
fbc_ctl |= (dev_priv->cfb_pitch & 0xff) << FBC_CTL_STRIDE_SHIFT;
fbc_ctl |= (interval & 0x2fff) << FBC_CTL_INTERVAL_SHIFT;
if (obj_priv->tiling_mode != I915_TILING_NONE)
fbc_ctl |= dev_priv->cfb_fence;
I915_WRITE(FBC_CONTROL, fbc_ctl);
DRM_DEBUG_KMS("enabled FBC, pitch %ld, yoff %d, plane %d, ",
dev_priv->cfb_pitch, crtc->y, dev_priv->cfb_plane);
}
void i8xx_disable_fbc(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 fbc_ctl;
if (!I915_HAS_FBC(dev))
return;
/* Disable compression */
fbc_ctl = I915_READ(FBC_CONTROL);
fbc_ctl &= ~FBC_CTL_EN;
I915_WRITE(FBC_CONTROL, fbc_ctl);
/* Wait for compressing bit to clear */
while (I915_READ(FBC_STATUS) & FBC_STAT_COMPRESSING)
; /* nothing */
intel_wait_for_vblank(dev);
DRM_DEBUG_KMS("disabled FBC\n");
}
static bool i8xx_fbc_enabled(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
return I915_READ(FBC_CONTROL) & FBC_CTL_EN;
}
static void g4x_enable_fbc(struct drm_crtc *crtc, unsigned long interval)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_framebuffer *fb = crtc->fb;
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct drm_i915_gem_object *obj_priv = intel_fb->obj->driver_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int plane = (intel_crtc->plane == 0 ? DPFC_CTL_PLANEA :
DPFC_CTL_PLANEB);
unsigned long stall_watermark = 200;
u32 dpfc_ctl;
dev_priv->cfb_pitch = (dev_priv->cfb_pitch / 64) - 1;
dev_priv->cfb_fence = obj_priv->fence_reg;
dev_priv->cfb_plane = intel_crtc->plane;
dpfc_ctl = plane | DPFC_SR_EN | DPFC_CTL_LIMIT_1X;
if (obj_priv->tiling_mode != I915_TILING_NONE) {
dpfc_ctl |= DPFC_CTL_FENCE_EN | dev_priv->cfb_fence;
I915_WRITE(DPFC_CHICKEN, DPFC_HT_MODIFY);
} else {
I915_WRITE(DPFC_CHICKEN, ~DPFC_HT_MODIFY);
}
I915_WRITE(DPFC_CONTROL, dpfc_ctl);
I915_WRITE(DPFC_RECOMP_CTL, DPFC_RECOMP_STALL_EN |
(stall_watermark << DPFC_RECOMP_STALL_WM_SHIFT) |
(interval << DPFC_RECOMP_TIMER_COUNT_SHIFT));
I915_WRITE(DPFC_FENCE_YOFF, crtc->y);
/* enable it... */
I915_WRITE(DPFC_CONTROL, I915_READ(DPFC_CONTROL) | DPFC_CTL_EN);
DRM_DEBUG_KMS("enabled fbc on plane %d\n", intel_crtc->plane);
}
void g4x_disable_fbc(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 dpfc_ctl;
/* Disable compression */
dpfc_ctl = I915_READ(DPFC_CONTROL);
dpfc_ctl &= ~DPFC_CTL_EN;
I915_WRITE(DPFC_CONTROL, dpfc_ctl);
intel_wait_for_vblank(dev);
DRM_DEBUG_KMS("disabled FBC\n");
}
static bool g4x_fbc_enabled(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
return I915_READ(DPFC_CONTROL) & DPFC_CTL_EN;
}
/**
* intel_update_fbc - enable/disable FBC as needed
* @crtc: CRTC to point the compressor at
* @mode: mode in use
*
* Set up the framebuffer compression hardware at mode set time. We
* enable it if possible:
* - plane A only (on pre-965)
* - no pixel mulitply/line duplication
* - no alpha buffer discard
* - no dual wide
* - framebuffer <= 2048 in width, 1536 in height
*
* We can't assume that any compression will take place (worst case),
* so the compressed buffer has to be the same size as the uncompressed
* one. It also must reside (along with the line length buffer) in
* stolen memory.
*
* We need to enable/disable FBC on a global basis.
*/
static void intel_update_fbc(struct drm_crtc *crtc,
struct drm_display_mode *mode)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_framebuffer *fb = crtc->fb;
struct intel_framebuffer *intel_fb;
struct drm_i915_gem_object *obj_priv;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int plane = intel_crtc->plane;
if (!i915_powersave)
return;
if (!dev_priv->display.fbc_enabled ||
!dev_priv->display.enable_fbc ||
!dev_priv->display.disable_fbc)
return;
if (!crtc->fb)
return;
intel_fb = to_intel_framebuffer(fb);
obj_priv = intel_fb->obj->driver_private;
/*
* If FBC is already on, we just have to verify that we can
* keep it that way...
* Need to disable if:
* - changing FBC params (stride, fence, mode)
* - new fb is too large to fit in compressed buffer
* - going to an unsupported config (interlace, pixel multiply, etc.)
*/
if (intel_fb->obj->size > dev_priv->cfb_size) {
DRM_DEBUG_KMS("framebuffer too large, disabling "
"compression\n");
goto out_disable;
}
if ((mode->flags & DRM_MODE_FLAG_INTERLACE) ||
(mode->flags & DRM_MODE_FLAG_DBLSCAN)) {
DRM_DEBUG_KMS("mode incompatible with compression, "
"disabling\n");
goto out_disable;
}
if ((mode->hdisplay > 2048) ||
(mode->vdisplay > 1536)) {
DRM_DEBUG_KMS("mode too large for compression, disabling\n");
goto out_disable;
}
if ((IS_I915GM(dev) || IS_I945GM(dev)) && plane != 0) {
DRM_DEBUG_KMS("plane not 0, disabling compression\n");
goto out_disable;
}
if (obj_priv->tiling_mode != I915_TILING_X) {
DRM_DEBUG_KMS("framebuffer not tiled, disabling compression\n");
goto out_disable;
}
if (dev_priv->display.fbc_enabled(crtc)) {
/* We can re-enable it in this case, but need to update pitch */
if (fb->pitch > dev_priv->cfb_pitch)
dev_priv->display.disable_fbc(dev);
if (obj_priv->fence_reg != dev_priv->cfb_fence)
dev_priv->display.disable_fbc(dev);
if (plane != dev_priv->cfb_plane)
dev_priv->display.disable_fbc(dev);
}
if (!dev_priv->display.fbc_enabled(crtc)) {
/* Now try to turn it back on if possible */
dev_priv->display.enable_fbc(crtc, 500);
}
return;
out_disable:
DRM_DEBUG_KMS("unsupported config, disabling FBC\n");
/* Multiple disables should be harmless */
if (dev_priv->display.fbc_enabled(crtc))
dev_priv->display.disable_fbc(dev);
}
static int
intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_master_private *master_priv;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_framebuffer *intel_fb;
struct drm_i915_gem_object *obj_priv;
struct drm_gem_object *obj;
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
unsigned long Start, Offset;
int dspbase = (plane == 0 ? DSPAADDR : DSPBADDR);
int dspsurf = (plane == 0 ? DSPASURF : DSPBSURF);
int dspstride = (plane == 0) ? DSPASTRIDE : DSPBSTRIDE;
int dsptileoff = (plane == 0 ? DSPATILEOFF : DSPBTILEOFF);
int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
u32 dspcntr, alignment;
int ret;
/* no fb bound */
if (!crtc->fb) {
DRM_DEBUG_KMS("No FB bound\n");
return 0;
}
switch (plane) {
case 0:
case 1:
break;
default:
DRM_ERROR("Can't update plane %d in SAREA\n", plane);
return -EINVAL;
}
intel_fb = to_intel_framebuffer(crtc->fb);
obj = intel_fb->obj;
obj_priv = obj->driver_private;
switch (obj_priv->tiling_mode) {
case I915_TILING_NONE:
alignment = 64 * 1024;
break;
case I915_TILING_X:
/* pin() will align the object as required by fence */
alignment = 0;
break;
case I915_TILING_Y:
/* FIXME: Is this true? */
DRM_ERROR("Y tiled not allowed for scan out buffers\n");
return -EINVAL;
default:
BUG();
}
mutex_lock(&dev->struct_mutex);
ret = i915_gem_object_pin(obj, alignment);
if (ret != 0) {
mutex_unlock(&dev->struct_mutex);
return ret;
}
ret = i915_gem_object_set_to_gtt_domain(obj, 1);
if (ret != 0) {
i915_gem_object_unpin(obj);
mutex_unlock(&dev->struct_mutex);
return 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 install a fence as the cost is not that onerous.
*/
if (obj_priv->fence_reg == I915_FENCE_REG_NONE &&
obj_priv->tiling_mode != I915_TILING_NONE) {
ret = i915_gem_object_get_fence_reg(obj);
if (ret != 0) {
i915_gem_object_unpin(obj);
mutex_unlock(&dev->struct_mutex);
return ret;
}
}
dspcntr = I915_READ(dspcntr_reg);
/* Mask out pixel format bits in case we change it */
dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
switch (crtc->fb->bits_per_pixel) {
case 8:
dspcntr |= DISPPLANE_8BPP;
break;
case 16:
if (crtc->fb->depth == 15)
dspcntr |= DISPPLANE_15_16BPP;
else
dspcntr |= DISPPLANE_16BPP;
break;
case 24:
case 32:
if (crtc->fb->depth == 30)
dspcntr |= DISPPLANE_32BPP_30BIT_NO_ALPHA;
else
dspcntr |= DISPPLANE_32BPP_NO_ALPHA;
break;
default:
DRM_ERROR("Unknown color depth\n");
i915_gem_object_unpin(obj);
mutex_unlock(&dev->struct_mutex);
return -EINVAL;
}
if (IS_I965G(dev)) {
if (obj_priv->tiling_mode != I915_TILING_NONE)
dspcntr |= DISPPLANE_TILED;
else
dspcntr &= ~DISPPLANE_TILED;
}
if (IS_IGDNG(dev))
/* must disable */
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
I915_WRITE(dspcntr_reg, dspcntr);
Start = obj_priv->gtt_offset;
Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d\n", Start, Offset, x, y);
I915_WRITE(dspstride, crtc->fb->pitch);
if (IS_I965G(dev)) {
I915_WRITE(dspbase, Offset);
I915_READ(dspbase);
I915_WRITE(dspsurf, Start);
I915_READ(dspsurf);
I915_WRITE(dsptileoff, (y << 16) | x);
} else {
I915_WRITE(dspbase, Start + Offset);
I915_READ(dspbase);
}
if ((IS_I965G(dev) || plane == 0))
intel_update_fbc(crtc, &crtc->mode);
intel_wait_for_vblank(dev);
if (old_fb) {
intel_fb = to_intel_framebuffer(old_fb);
obj_priv = intel_fb->obj->driver_private;
i915_gem_object_unpin(intel_fb->obj);
}
intel_increase_pllclock(crtc, true);
mutex_unlock(&dev->struct_mutex);
if (!dev->primary->master)
return 0;
master_priv = dev->primary->master->driver_priv;
if (!master_priv->sarea_priv)
return 0;
if (pipe) {
master_priv->sarea_priv->pipeB_x = x;
master_priv->sarea_priv->pipeB_y = y;
} else {
master_priv->sarea_priv->pipeA_x = x;
master_priv->sarea_priv->pipeA_y = y;
}
return 0;
}
/* Disable the VGA plane that we never use */
static void i915_disable_vga (struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u8 sr1;
u32 vga_reg;
if (IS_IGDNG(dev))
vga_reg = CPU_VGACNTRL;
else
vga_reg = VGACNTRL;
if (I915_READ(vga_reg) & VGA_DISP_DISABLE)
return;
I915_WRITE8(VGA_SR_INDEX, 1);
sr1 = I915_READ8(VGA_SR_DATA);
I915_WRITE8(VGA_SR_DATA, sr1 | (1 << 5));
udelay(100);
I915_WRITE(vga_reg, VGA_DISP_DISABLE);
}
static void igdng_disable_pll_edp (struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 dpa_ctl;
DRM_DEBUG_KMS("\n");
dpa_ctl = I915_READ(DP_A);
dpa_ctl &= ~DP_PLL_ENABLE;
I915_WRITE(DP_A, dpa_ctl);
}
static void igdng_enable_pll_edp (struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 dpa_ctl;
dpa_ctl = I915_READ(DP_A);
dpa_ctl |= DP_PLL_ENABLE;
I915_WRITE(DP_A, dpa_ctl);
udelay(200);
}
static void igdng_set_pll_edp (struct drm_crtc *crtc, int clock)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 dpa_ctl;
DRM_DEBUG_KMS("eDP PLL enable for clock %d\n", clock);
dpa_ctl = I915_READ(DP_A);
dpa_ctl &= ~DP_PLL_FREQ_MASK;
if (clock < 200000) {
u32 temp;
dpa_ctl |= DP_PLL_FREQ_160MHZ;
/* workaround for 160Mhz:
1) program 0x4600c bits 15:0 = 0x8124
2) program 0x46010 bit 0 = 1
3) program 0x46034 bit 24 = 1
4) program 0x64000 bit 14 = 1
*/
temp = I915_READ(0x4600c);
temp &= 0xffff0000;
I915_WRITE(0x4600c, temp | 0x8124);
temp = I915_READ(0x46010);
I915_WRITE(0x46010, temp | 1);
temp = I915_READ(0x46034);
I915_WRITE(0x46034, temp | (1 << 24));
} else {
dpa_ctl |= DP_PLL_FREQ_270MHZ;
}
I915_WRITE(DP_A, dpa_ctl);
udelay(500);
}
static void igdng_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
int fdi_rx_iir_reg = (pipe == 0) ? FDI_RXA_IIR : FDI_RXB_IIR;
int fdi_rx_imr_reg = (pipe == 0) ? FDI_RXA_IMR : FDI_RXB_IMR;
int transconf_reg = (pipe == 0) ? TRANSACONF : TRANSBCONF;
int pf_ctl_reg = (pipe == 0) ? PFA_CTL_1 : PFB_CTL_1;
int pf_win_size = (pipe == 0) ? PFA_WIN_SZ : PFB_WIN_SZ;
int pf_win_pos = (pipe == 0) ? PFA_WIN_POS : PFB_WIN_POS;
int cpu_htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
int cpu_hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
int cpu_hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
int cpu_vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
int cpu_vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
int cpu_vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
int trans_htot_reg = (pipe == 0) ? TRANS_HTOTAL_A : TRANS_HTOTAL_B;
int trans_hblank_reg = (pipe == 0) ? TRANS_HBLANK_A : TRANS_HBLANK_B;
int trans_hsync_reg = (pipe == 0) ? TRANS_HSYNC_A : TRANS_HSYNC_B;
int trans_vtot_reg = (pipe == 0) ? TRANS_VTOTAL_A : TRANS_VTOTAL_B;
int trans_vblank_reg = (pipe == 0) ? TRANS_VBLANK_A : TRANS_VBLANK_B;
int trans_vsync_reg = (pipe == 0) ? TRANS_VSYNC_A : TRANS_VSYNC_B;
u32 temp;
int tries = 5, j, n;
/* XXX: When our outputs are all unaware of DPMS modes other than off
* and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
*/
switch (mode) {
case DRM_MODE_DPMS_ON:
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
DRM_DEBUG_KMS("crtc %d dpms on\n", pipe);
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
temp = I915_READ(PCH_LVDS);
if ((temp & LVDS_PORT_EN) == 0) {
I915_WRITE(PCH_LVDS, temp | LVDS_PORT_EN);
POSTING_READ(PCH_LVDS);
}
}
if (HAS_eDP) {
/* enable eDP PLL */
igdng_enable_pll_edp(crtc);
} else {
/* enable PCH DPLL */
temp = I915_READ(pch_dpll_reg);
if ((temp & DPLL_VCO_ENABLE) == 0) {
I915_WRITE(pch_dpll_reg, temp | DPLL_VCO_ENABLE);
I915_READ(pch_dpll_reg);
}
/* enable PCH FDI RX PLL, wait warmup plus DMI latency */
temp = I915_READ(fdi_rx_reg);
I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE |
FDI_SEL_PCDCLK |
FDI_DP_PORT_WIDTH_X4); /* default 4 lanes */
I915_READ(fdi_rx_reg);
udelay(200);
/* Enable CPU FDI TX PLL, always on for IGDNG */
temp = I915_READ(fdi_tx_reg);
if ((temp & FDI_TX_PLL_ENABLE) == 0) {
I915_WRITE(fdi_tx_reg, temp | FDI_TX_PLL_ENABLE);
I915_READ(fdi_tx_reg);
udelay(100);
}
}
/* Enable panel fitting for LVDS */
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
temp = I915_READ(pf_ctl_reg);
I915_WRITE(pf_ctl_reg, temp | PF_ENABLE | PF_FILTER_MED_3x3);
/* currently full aspect */
I915_WRITE(pf_win_pos, 0);
I915_WRITE(pf_win_size,
(dev_priv->panel_fixed_mode->hdisplay << 16) |
(dev_priv->panel_fixed_mode->vdisplay));
}
/* Enable CPU pipe */
temp = I915_READ(pipeconf_reg);
if ((temp & PIPEACONF_ENABLE) == 0) {
I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
I915_READ(pipeconf_reg);
udelay(100);
}
/* configure and enable CPU plane */
temp = I915_READ(dspcntr_reg);
if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
/* Flush the plane changes */
I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
}
if (!HAS_eDP) {
/* enable CPU FDI TX and PCH FDI RX */
temp = I915_READ(fdi_tx_reg);
temp |= FDI_TX_ENABLE;
temp |= FDI_DP_PORT_WIDTH_X4; /* default */
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(fdi_tx_reg, temp);
I915_READ(fdi_tx_reg);
temp = I915_READ(fdi_rx_reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(fdi_rx_reg, temp | FDI_RX_ENABLE);
I915_READ(fdi_rx_reg);
udelay(150);
/* Train FDI. */
/* umask FDI RX Interrupt symbol_lock and bit_lock bit
for train result */
temp = I915_READ(fdi_rx_imr_reg);
temp &= ~FDI_RX_SYMBOL_LOCK;
temp &= ~FDI_RX_BIT_LOCK;
I915_WRITE(fdi_rx_imr_reg, temp);
I915_READ(fdi_rx_imr_reg);
udelay(150);
temp = I915_READ(fdi_rx_iir_reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if ((temp & FDI_RX_BIT_LOCK) == 0) {
for (j = 0; j < tries; j++) {
temp = I915_READ(fdi_rx_iir_reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n",
temp);
if (temp & FDI_RX_BIT_LOCK)
break;
udelay(200);
}
if (j != tries)
I915_WRITE(fdi_rx_iir_reg,
temp | FDI_RX_BIT_LOCK);
else
DRM_DEBUG_KMS("train 1 fail\n");
} else {
I915_WRITE(fdi_rx_iir_reg,
temp | FDI_RX_BIT_LOCK);
DRM_DEBUG_KMS("train 1 ok 2!\n");
}
temp = I915_READ(fdi_tx_reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
I915_WRITE(fdi_tx_reg, temp);
temp = I915_READ(fdi_rx_reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
I915_WRITE(fdi_rx_reg, temp);
udelay(150);
temp = I915_READ(fdi_rx_iir_reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n", temp);
if ((temp & FDI_RX_SYMBOL_LOCK) == 0) {
for (j = 0; j < tries; j++) {
temp = I915_READ(fdi_rx_iir_reg);
DRM_DEBUG_KMS("FDI_RX_IIR 0x%x\n",
temp);
if (temp & FDI_RX_SYMBOL_LOCK)
break;
udelay(200);
}
if (j != tries) {
I915_WRITE(fdi_rx_iir_reg,
temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("train 2 ok 1!\n");
} else
DRM_DEBUG_KMS("train 2 fail\n");
} else {
I915_WRITE(fdi_rx_iir_reg,
temp | FDI_RX_SYMBOL_LOCK);
DRM_DEBUG_KMS("train 2 ok 2!\n");
}
DRM_DEBUG_KMS("train done\n");
/* set transcoder timing */
I915_WRITE(trans_htot_reg, I915_READ(cpu_htot_reg));
I915_WRITE(trans_hblank_reg, I915_READ(cpu_hblank_reg));
I915_WRITE(trans_hsync_reg, I915_READ(cpu_hsync_reg));
I915_WRITE(trans_vtot_reg, I915_READ(cpu_vtot_reg));
I915_WRITE(trans_vblank_reg, I915_READ(cpu_vblank_reg));
I915_WRITE(trans_vsync_reg, I915_READ(cpu_vsync_reg));
/* enable PCH transcoder */
temp = I915_READ(transconf_reg);
I915_WRITE(transconf_reg, temp | TRANS_ENABLE);
I915_READ(transconf_reg);
while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) == 0)
;
/* enable normal */
temp = I915_READ(fdi_tx_reg);
temp &= ~FDI_LINK_TRAIN_NONE;
I915_WRITE(fdi_tx_reg, temp | FDI_LINK_TRAIN_NONE |
FDI_TX_ENHANCE_FRAME_ENABLE);
I915_READ(fdi_tx_reg);
temp = I915_READ(fdi_rx_reg);
temp &= ~FDI_LINK_TRAIN_NONE;
I915_WRITE(fdi_rx_reg, temp | FDI_LINK_TRAIN_NONE |
FDI_RX_ENHANCE_FRAME_ENABLE);
I915_READ(fdi_rx_reg);
/* wait one idle pattern time */
udelay(100);
}
intel_crtc_load_lut(crtc);
break;
case DRM_MODE_DPMS_OFF:
DRM_DEBUG_KMS("crtc %d dpms off\n", pipe);
/* Disable display plane */
temp = I915_READ(dspcntr_reg);
if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
/* Flush the plane changes */
I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
I915_READ(dspbase_reg);
}
i915_disable_vga(dev);
/* disable cpu pipe, disable after all planes disabled */
temp = I915_READ(pipeconf_reg);
if ((temp & PIPEACONF_ENABLE) != 0) {
I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
I915_READ(pipeconf_reg);
n = 0;
/* wait for cpu pipe off, pipe state */
while ((I915_READ(pipeconf_reg) & I965_PIPECONF_ACTIVE) != 0) {
n++;
if (n < 60) {
udelay(500);
continue;
} else {
DRM_DEBUG_KMS("pipe %d off delay\n",
pipe);
break;
}
}
} else
DRM_DEBUG_KMS("crtc %d is disabled\n", pipe);
udelay(100);
/* Disable PF */
temp = I915_READ(pf_ctl_reg);
if ((temp & PF_ENABLE) != 0) {
I915_WRITE(pf_ctl_reg, temp & ~PF_ENABLE);
I915_READ(pf_ctl_reg);
}
I915_WRITE(pf_win_size, 0);
/* disable CPU FDI tx and PCH FDI rx */
temp = I915_READ(fdi_tx_reg);
I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_ENABLE);
I915_READ(fdi_tx_reg);
temp = I915_READ(fdi_rx_reg);
I915_WRITE(fdi_rx_reg, temp & ~FDI_RX_ENABLE);
I915_READ(fdi_rx_reg);
udelay(100);
/* still set train pattern 1 */
temp = I915_READ(fdi_tx_reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(fdi_tx_reg, temp);
temp = I915_READ(fdi_rx_reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
I915_WRITE(fdi_rx_reg, temp);
udelay(100);
if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
temp = I915_READ(PCH_LVDS);
I915_WRITE(PCH_LVDS, temp & ~LVDS_PORT_EN);
I915_READ(PCH_LVDS);
udelay(100);
}
/* disable PCH transcoder */
temp = I915_READ(transconf_reg);
if ((temp & TRANS_ENABLE) != 0) {
I915_WRITE(transconf_reg, temp & ~TRANS_ENABLE);
I915_READ(transconf_reg);
n = 0;
/* wait for PCH transcoder off, transcoder state */
while ((I915_READ(transconf_reg) & TRANS_STATE_ENABLE) != 0) {
n++;
if (n < 60) {
udelay(500);
continue;
} else {
DRM_DEBUG_KMS("transcoder %d off "
"delay\n", pipe);
break;
}
}
}
udelay(100);
/* disable PCH DPLL */
temp = I915_READ(pch_dpll_reg);
if ((temp & DPLL_VCO_ENABLE) != 0) {
I915_WRITE(pch_dpll_reg, temp & ~DPLL_VCO_ENABLE);
I915_READ(pch_dpll_reg);
}
if (HAS_eDP) {
igdng_disable_pll_edp(crtc);
}
temp = I915_READ(fdi_rx_reg);
temp &= ~FDI_SEL_PCDCLK;
I915_WRITE(fdi_rx_reg, temp);
I915_READ(fdi_rx_reg);
temp = I915_READ(fdi_rx_reg);
temp &= ~FDI_RX_PLL_ENABLE;
I915_WRITE(fdi_rx_reg, temp);
I915_READ(fdi_rx_reg);
/* Disable CPU FDI TX PLL */
temp = I915_READ(fdi_tx_reg);
if ((temp & FDI_TX_PLL_ENABLE) != 0) {
I915_WRITE(fdi_tx_reg, temp & ~FDI_TX_PLL_ENABLE);
I915_READ(fdi_tx_reg);
udelay(100);
}
/* Wait for the clocks to turn off. */
udelay(100);
break;
}
}
static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
{
struct intel_overlay *overlay;
int ret;
if (!enable && intel_crtc->overlay) {
overlay = intel_crtc->overlay;
mutex_lock(&overlay->dev->struct_mutex);
for (;;) {
ret = intel_overlay_switch_off(overlay);
if (ret == 0)
break;
ret = intel_overlay_recover_from_interrupt(overlay, 0);
if (ret != 0) {
/* overlay doesn't react anymore. Usually
* results in a black screen and an unkillable
* X server. */
BUG();
overlay->hw_wedged = HW_WEDGED;
break;
}
}
mutex_unlock(&overlay->dev->struct_mutex);
}
/* Let userspace switch the overlay on again. In most cases userspace
* has to recompute where to put it anyway. */
return;
}
static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
u32 temp;
/* XXX: When our outputs are all unaware of DPMS modes other than off
* and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
*/
switch (mode) {
case DRM_MODE_DPMS_ON:
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
intel_update_watermarks(dev);
/* Enable the DPLL */
temp = I915_READ(dpll_reg);
if ((temp & DPLL_VCO_ENABLE) == 0) {
I915_WRITE(dpll_reg, temp);
I915_READ(dpll_reg);
/* Wait for the clocks to stabilize. */
udelay(150);
I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
I915_READ(dpll_reg);
/* Wait for the clocks to stabilize. */
udelay(150);
I915_WRITE(dpll_reg, temp | DPLL_VCO_ENABLE);
I915_READ(dpll_reg);
/* Wait for the clocks to stabilize. */
udelay(150);
}
/* Enable the pipe */
temp = I915_READ(pipeconf_reg);
if ((temp & PIPEACONF_ENABLE) == 0)
I915_WRITE(pipeconf_reg, temp | PIPEACONF_ENABLE);
/* Enable the plane */
temp = I915_READ(dspcntr_reg);
if ((temp & DISPLAY_PLANE_ENABLE) == 0) {
I915_WRITE(dspcntr_reg, temp | DISPLAY_PLANE_ENABLE);
/* Flush the plane changes */
I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
}
intel_crtc_load_lut(crtc);
if ((IS_I965G(dev) || plane == 0))
intel_update_fbc(crtc, &crtc->mode);
/* Give the overlay scaler a chance to enable if it's on this pipe */
intel_crtc_dpms_overlay(intel_crtc, true);
break;
case DRM_MODE_DPMS_OFF:
intel_update_watermarks(dev);
/* Give the overlay scaler a chance to disable if it's on this pipe */
intel_crtc_dpms_overlay(intel_crtc, false);
if (dev_priv->cfb_plane == plane &&
dev_priv->display.disable_fbc)
dev_priv->display.disable_fbc(dev);
/* Disable the VGA plane that we never use */
i915_disable_vga(dev);
/* Disable display plane */
temp = I915_READ(dspcntr_reg);
if ((temp & DISPLAY_PLANE_ENABLE) != 0) {
I915_WRITE(dspcntr_reg, temp & ~DISPLAY_PLANE_ENABLE);
/* Flush the plane changes */
I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
I915_READ(dspbase_reg);
}
if (!IS_I9XX(dev)) {
/* Wait for vblank for the disable to take effect */
intel_wait_for_vblank(dev);
}
/* Next, disable display pipes */
temp = I915_READ(pipeconf_reg);
if ((temp & PIPEACONF_ENABLE) != 0) {
I915_WRITE(pipeconf_reg, temp & ~PIPEACONF_ENABLE);
I915_READ(pipeconf_reg);
}
/* Wait for vblank for the disable to take effect. */
intel_wait_for_vblank(dev);
temp = I915_READ(dpll_reg);
if ((temp & DPLL_VCO_ENABLE) != 0) {
I915_WRITE(dpll_reg, temp & ~DPLL_VCO_ENABLE);
I915_READ(dpll_reg);
}
/* Wait for the clocks to turn off. */
udelay(150);
break;
}
}
/**
* Sets the power management mode of the pipe and plane.
*
* This code should probably grow support for turning the cursor off and back
* on appropriately at the same time as we're turning the pipe off/on.
*/
static void intel_crtc_dpms(struct drm_crtc *crtc, int mode)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_i915_master_private *master_priv;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
bool enabled;
dev_priv->display.dpms(crtc, mode);
intel_crtc->dpms_mode = mode;
if (!dev->primary->master)
return;
master_priv = dev->primary->master->driver_priv;
if (!master_priv->sarea_priv)
return;
enabled = crtc->enabled && mode != DRM_MODE_DPMS_OFF;
switch (pipe) {
case 0:
master_priv->sarea_priv->pipeA_w = enabled ? crtc->mode.hdisplay : 0;
master_priv->sarea_priv->pipeA_h = enabled ? crtc->mode.vdisplay : 0;
break;
case 1:
master_priv->sarea_priv->pipeB_w = enabled ? crtc->mode.hdisplay : 0;
master_priv->sarea_priv->pipeB_h = enabled ? crtc->mode.vdisplay : 0;
break;
default:
DRM_ERROR("Can't update pipe %d in SAREA\n", pipe);
break;
}
}
static void intel_crtc_prepare (struct drm_crtc *crtc)
{
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
}
static void intel_crtc_commit (struct drm_crtc *crtc)
{
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
}
void intel_encoder_prepare (struct drm_encoder *encoder)
{
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
/* lvds has its own version of prepare see intel_lvds_prepare */
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_OFF);
}
void intel_encoder_commit (struct drm_encoder *encoder)
{
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
/* lvds has its own version of commit see intel_lvds_commit */
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
}
static bool intel_crtc_mode_fixup(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode)
{
struct drm_device *dev = crtc->dev;
if (IS_IGDNG(dev)) {
/* FDI link clock is fixed at 2.7G */
if (mode->clock * 3 > 27000 * 4)
return MODE_CLOCK_HIGH;
}
return true;
}
static int i945_get_display_clock_speed(struct drm_device *dev)
{
return 400000;
}
static int i915_get_display_clock_speed(struct drm_device *dev)
{
return 333000;
}
static int i9xx_misc_get_display_clock_speed(struct drm_device *dev)
{
return 200000;
}
static int i915gm_get_display_clock_speed(struct drm_device *dev)
{
u16 gcfgc = 0;
pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
if (gcfgc & GC_LOW_FREQUENCY_ENABLE)
return 133000;
else {
switch (gcfgc & GC_DISPLAY_CLOCK_MASK) {
case GC_DISPLAY_CLOCK_333_MHZ:
return 333000;
default:
case GC_DISPLAY_CLOCK_190_200_MHZ:
return 190000;
}
}
}
static int i865_get_display_clock_speed(struct drm_device *dev)
{
return 266000;
}
static int i855_get_display_clock_speed(struct drm_device *dev)
{
u16 hpllcc = 0;
/* Assume that the hardware is in the high speed state. This
* should be the default.
*/
switch (hpllcc & GC_CLOCK_CONTROL_MASK) {
case GC_CLOCK_133_200:
case GC_CLOCK_100_200:
return 200000;
case GC_CLOCK_166_250:
return 250000;
case GC_CLOCK_100_133:
return 133000;
}
/* Shouldn't happen */
return 0;
}
static int i830_get_display_clock_speed(struct drm_device *dev)
{
return 133000;
}
/**
* Return the pipe currently connected to the panel fitter,
* or -1 if the panel fitter is not present or not in use
*/
int intel_panel_fitter_pipe (struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 pfit_control;
/* i830 doesn't have a panel fitter */
if (IS_I830(dev))
return -1;
pfit_control = I915_READ(PFIT_CONTROL);
/* See if the panel fitter is in use */
if ((pfit_control & PFIT_ENABLE) == 0)
return -1;
/* 965 can place panel fitter on either pipe */
if (IS_I965G(dev))
return (pfit_control >> 29) & 0x3;
/* older chips can only use pipe 1 */
return 1;
}
struct fdi_m_n {
u32 tu;
u32 gmch_m;
u32 gmch_n;
u32 link_m;
u32 link_n;
};
static void
fdi_reduce_ratio(u32 *num, u32 *den)
{
while (*num > 0xffffff || *den > 0xffffff) {
*num >>= 1;
*den >>= 1;
}
}
#define DATA_N 0x800000
#define LINK_N 0x80000
static void
igdng_compute_m_n(int bits_per_pixel, int nlanes,
int pixel_clock, int link_clock,
struct fdi_m_n *m_n)
{
u64 temp;
m_n->tu = 64; /* default size */
temp = (u64) DATA_N * pixel_clock;
temp = div_u64(temp, link_clock);
m_n->gmch_m = div_u64(temp * bits_per_pixel, nlanes);
m_n->gmch_m >>= 3; /* convert to bytes_per_pixel */
m_n->gmch_n = DATA_N;
fdi_reduce_ratio(&m_n->gmch_m, &m_n->gmch_n);
temp = (u64) LINK_N * pixel_clock;
m_n->link_m = div_u64(temp, link_clock);
m_n->link_n = LINK_N;
fdi_reduce_ratio(&m_n->link_m, &m_n->link_n);
}
struct intel_watermark_params {
unsigned long fifo_size;
unsigned long max_wm;
unsigned long default_wm;
unsigned long guard_size;
unsigned long cacheline_size;
};
/* IGD has different values for various configs */
static struct intel_watermark_params igd_display_wm = {
IGD_DISPLAY_FIFO,
IGD_MAX_WM,
IGD_DFT_WM,
IGD_GUARD_WM,
IGD_FIFO_LINE_SIZE
};
static struct intel_watermark_params igd_display_hplloff_wm = {
IGD_DISPLAY_FIFO,
IGD_MAX_WM,
IGD_DFT_HPLLOFF_WM,
IGD_GUARD_WM,
IGD_FIFO_LINE_SIZE
};
static struct intel_watermark_params igd_cursor_wm = {
IGD_CURSOR_FIFO,
IGD_CURSOR_MAX_WM,
IGD_CURSOR_DFT_WM,
IGD_CURSOR_GUARD_WM,
IGD_FIFO_LINE_SIZE,
};
static struct intel_watermark_params igd_cursor_hplloff_wm = {
IGD_CURSOR_FIFO,
IGD_CURSOR_MAX_WM,
IGD_CURSOR_DFT_WM,
IGD_CURSOR_GUARD_WM,
IGD_FIFO_LINE_SIZE
};
static struct intel_watermark_params g4x_wm_info = {
G4X_FIFO_SIZE,
G4X_MAX_WM,
G4X_MAX_WM,
2,
G4X_FIFO_LINE_SIZE,
};
static struct intel_watermark_params i945_wm_info = {
I945_FIFO_SIZE,
I915_MAX_WM,
1,
2,
I915_FIFO_LINE_SIZE
};
static struct intel_watermark_params i915_wm_info = {
I915_FIFO_SIZE,
I915_MAX_WM,
1,
2,
I915_FIFO_LINE_SIZE
};
static struct intel_watermark_params i855_wm_info = {
I855GM_FIFO_SIZE,
I915_MAX_WM,
1,
2,
I830_FIFO_LINE_SIZE
};
static struct intel_watermark_params i830_wm_info = {
I830_FIFO_SIZE,
I915_MAX_WM,
1,
2,
I830_FIFO_LINE_SIZE
};
/**
* intel_calculate_wm - calculate watermark level
* @clock_in_khz: pixel clock
* @wm: chip FIFO params
* @pixel_size: display pixel size
* @latency_ns: memory latency for the platform
*
* Calculate the watermark level (the level at which the display plane will
* start fetching from memory again). Each chip has a different display
* FIFO size and allocation, so the caller needs to figure that out and pass
* in the correct intel_watermark_params structure.
*
* As the pixel clock runs, the FIFO will be drained at a rate that depends
* on the pixel size. When it reaches the watermark level, it'll start
* fetching FIFO line sized based chunks from memory until the FIFO fills
* past the watermark point. If the FIFO drains completely, a FIFO underrun
* will occur, and a display engine hang could result.
*/
static unsigned long intel_calculate_wm(unsigned long clock_in_khz,
struct intel_watermark_params *wm,
int pixel_size,
unsigned long latency_ns)
{
long entries_required, wm_size;
/*
* Note: we need to make sure we don't overflow for various clock &
* latency values.
* clocks go from a few thousand to several hundred thousand.
* latency is usually a few thousand
*/
entries_required = ((clock_in_khz / 1000) * pixel_size * latency_ns) /
1000;
entries_required /= wm->cacheline_size;
DRM_DEBUG_KMS("FIFO entries required for mode: %d\n", entries_required);
wm_size = wm->fifo_size - (entries_required + wm->guard_size);
DRM_DEBUG_KMS("FIFO watermark level: %d\n", wm_size);
/* Don't promote wm_size to unsigned... */
if (wm_size > (long)wm->max_wm)
wm_size = wm->max_wm;
if (wm_size <= 0)
wm_size = wm->default_wm;
return wm_size;
}
struct cxsr_latency {
int is_desktop;
unsigned long fsb_freq;
unsigned long mem_freq;
unsigned long display_sr;
unsigned long display_hpll_disable;
unsigned long cursor_sr;
unsigned long cursor_hpll_disable;
};
static struct cxsr_latency cxsr_latency_table[] = {
{1, 800, 400, 3382, 33382, 3983, 33983}, /* DDR2-400 SC */
{1, 800, 667, 3354, 33354, 3807, 33807}, /* DDR2-667 SC */
{1, 800, 800, 3347, 33347, 3763, 33763}, /* DDR2-800 SC */
{1, 667, 400, 3400, 33400, 4021, 34021}, /* DDR2-400 SC */
{1, 667, 667, 3372, 33372, 3845, 33845}, /* DDR2-667 SC */
{1, 667, 800, 3386, 33386, 3822, 33822}, /* DDR2-800 SC */
{1, 400, 400, 3472, 33472, 4173, 34173}, /* DDR2-400 SC */
{1, 400, 667, 3443, 33443, 3996, 33996}, /* DDR2-667 SC */
{1, 400, 800, 3430, 33430, 3946, 33946}, /* DDR2-800 SC */
{0, 800, 400, 3438, 33438, 4065, 34065}, /* DDR2-400 SC */
{0, 800, 667, 3410, 33410, 3889, 33889}, /* DDR2-667 SC */
{0, 800, 800, 3403, 33403, 3845, 33845}, /* DDR2-800 SC */
{0, 667, 400, 3456, 33456, 4103, 34106}, /* DDR2-400 SC */
{0, 667, 667, 3428, 33428, 3927, 33927}, /* DDR2-667 SC */
{0, 667, 800, 3443, 33443, 3905, 33905}, /* DDR2-800 SC */
{0, 400, 400, 3528, 33528, 4255, 34255}, /* DDR2-400 SC */
{0, 400, 667, 3500, 33500, 4079, 34079}, /* DDR2-667 SC */
{0, 400, 800, 3487, 33487, 4029, 34029}, /* DDR2-800 SC */
};
static struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, int fsb,
int mem)
{
int i;
struct cxsr_latency *latency;
if (fsb == 0 || mem == 0)
return NULL;
for (i = 0; i < ARRAY_SIZE(cxsr_latency_table); i++) {
latency = &cxsr_latency_table[i];
if (is_desktop == latency->is_desktop &&
fsb == latency->fsb_freq && mem == latency->mem_freq)
return latency;
}
DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
return NULL;
}
static void igd_disable_cxsr(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 reg;
/* deactivate cxsr */
reg = I915_READ(DSPFW3);
reg &= ~(IGD_SELF_REFRESH_EN);
I915_WRITE(DSPFW3, reg);
DRM_INFO("Big FIFO is disabled\n");
}
static void igd_enable_cxsr(struct drm_device *dev, unsigned long clock,
int pixel_size)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u32 reg;
unsigned long wm;
struct cxsr_latency *latency;
latency = intel_get_cxsr_latency(IS_IGDG(dev), dev_priv->fsb_freq,
dev_priv->mem_freq);
if (!latency) {
DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
igd_disable_cxsr(dev);
return;
}
/* Display SR */
wm = intel_calculate_wm(clock, &igd_display_wm, pixel_size,
latency->display_sr);
reg = I915_READ(DSPFW1);
reg &= 0x7fffff;
reg |= wm << 23;
I915_WRITE(DSPFW1, reg);
DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
/* cursor SR */
wm = intel_calculate_wm(clock, &igd_cursor_wm, pixel_size,
latency->cursor_sr);
reg = I915_READ(DSPFW3);
reg &= ~(0x3f << 24);
reg |= (wm & 0x3f) << 24;
I915_WRITE(DSPFW3, reg);
/* Display HPLL off SR */
wm = intel_calculate_wm(clock, &igd_display_hplloff_wm,
latency->display_hpll_disable, I915_FIFO_LINE_SIZE);
reg = I915_READ(DSPFW3);
reg &= 0xfffffe00;
reg |= wm & 0x1ff;
I915_WRITE(DSPFW3, reg);
/* cursor HPLL off SR */
wm = intel_calculate_wm(clock, &igd_cursor_hplloff_wm, pixel_size,
latency->cursor_hpll_disable);
reg = I915_READ(DSPFW3);
reg &= ~(0x3f << 16);
reg |= (wm & 0x3f) << 16;
I915_WRITE(DSPFW3, reg);
DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
/* activate cxsr */
reg = I915_READ(DSPFW3);
reg |= IGD_SELF_REFRESH_EN;
I915_WRITE(DSPFW3, reg);
DRM_INFO("Big FIFO is enabled\n");
return;
}
/*
* Latency for FIFO fetches is dependent on several factors:
* - memory configuration (speed, channels)
* - chipset
* - current MCH state
* It can be fairly high in some situations, so here we assume a fairly
* pessimal value. It's a tradeoff between extra memory fetches (if we
* set this value too high, the FIFO will fetch frequently to stay full)
* and power consumption (set it too low to save power and we might see
* FIFO underruns and display "flicker").
*
* A value of 5us seems to be a good balance; safe for very low end
* platforms but not overly aggressive on lower latency configs.
*/
const static int latency_ns = 5000;
static int i9xx_get_fifo_size(struct drm_device *dev, int plane)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t dsparb = I915_READ(DSPARB);
int size;
if (plane == 0)
size = dsparb & 0x7f;
else
size = ((dsparb >> DSPARB_CSTART_SHIFT) & 0x7f) -
(dsparb & 0x7f);
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
plane ? "B" : "A", size);
return size;
}
static int i85x_get_fifo_size(struct drm_device *dev, int plane)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t dsparb = I915_READ(DSPARB);
int size;
if (plane == 0)
size = dsparb & 0x1ff;
else
size = ((dsparb >> DSPARB_BEND_SHIFT) & 0x1ff) -
(dsparb & 0x1ff);
size >>= 1; /* Convert to cachelines */
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
plane ? "B" : "A", size);
return size;
}
static int i845_get_fifo_size(struct drm_device *dev, int plane)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t dsparb = I915_READ(DSPARB);
int size;
size = dsparb & 0x7f;
size >>= 2; /* Convert to cachelines */
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
plane ? "B" : "A",
size);
return size;
}
static int i830_get_fifo_size(struct drm_device *dev, int plane)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t dsparb = I915_READ(DSPARB);
int size;
size = dsparb & 0x7f;
size >>= 1; /* Convert to cachelines */
DRM_DEBUG_KMS("FIFO size - (0x%08x) %s: %d\n", dsparb,
plane ? "B" : "A", size);
return size;
}
static void g4x_update_wm(struct drm_device *dev, int planea_clock,
int planeb_clock, int sr_hdisplay, int pixel_size)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int total_size, cacheline_size;
int planea_wm, planeb_wm, cursora_wm, cursorb_wm, cursor_sr;
struct intel_watermark_params planea_params, planeb_params;
unsigned long line_time_us;
int sr_clock, sr_entries = 0, entries_required;
/* Create copies of the base settings for each pipe */
planea_params = planeb_params = g4x_wm_info;
/* Grab a couple of global values before we overwrite them */
total_size = planea_params.fifo_size;
cacheline_size = planea_params.cacheline_size;
/*
* Note: we need to make sure we don't overflow for various clock &
* latency values.
* clocks go from a few thousand to several hundred thousand.
* latency is usually a few thousand
*/
entries_required = ((planea_clock / 1000) * pixel_size * latency_ns) /
1000;
entries_required /= G4X_FIFO_LINE_SIZE;
planea_wm = entries_required + planea_params.guard_size;
entries_required = ((planeb_clock / 1000) * pixel_size * latency_ns) /
1000;
entries_required /= G4X_FIFO_LINE_SIZE;
planeb_wm = entries_required + planeb_params.guard_size;
cursora_wm = cursorb_wm = 16;
cursor_sr = 32;
DRM_DEBUG("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
/* Calc sr entries for one plane configs */
if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
/* self-refresh has much higher latency */
const static int sr_latency_ns = 12000;
sr_clock = planea_clock ? planea_clock : planeb_clock;
line_time_us = ((sr_hdisplay * 1000) / sr_clock);
/* Use ns/us then divide to preserve precision */
sr_entries = (((sr_latency_ns / line_time_us) + 1) *
pixel_size * sr_hdisplay) / 1000;
sr_entries = roundup(sr_entries / cacheline_size, 1);
DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
}
DRM_DEBUG("Setting FIFO watermarks - A: %d, B: %d, SR %d\n",
planea_wm, planeb_wm, sr_entries);
planea_wm &= 0x3f;
planeb_wm &= 0x3f;
I915_WRITE(DSPFW1, (sr_entries << DSPFW_SR_SHIFT) |
(cursorb_wm << DSPFW_CURSORB_SHIFT) |
(planeb_wm << DSPFW_PLANEB_SHIFT) | planea_wm);
I915_WRITE(DSPFW2, (I915_READ(DSPFW2) & DSPFW_CURSORA_MASK) |
(cursora_wm << DSPFW_CURSORA_SHIFT));
/* HPLL off in SR has some issues on G4x... disable it */
I915_WRITE(DSPFW3, (I915_READ(DSPFW3) & ~DSPFW_HPLL_SR_EN) |
(cursor_sr << DSPFW_CURSOR_SR_SHIFT));
}
static void i965_update_wm(struct drm_device *dev, int planea_clock,
int planeb_clock, int sr_hdisplay, int pixel_size)
{
struct drm_i915_private *dev_priv = dev->dev_private;
unsigned long line_time_us;
int sr_clock, sr_entries, srwm = 1;
/* Calc sr entries for one plane configs */
if (sr_hdisplay && (!planea_clock || !planeb_clock)) {
/* self-refresh has much higher latency */
const static int sr_latency_ns = 12000;
sr_clock = planea_clock ? planea_clock : planeb_clock;
line_time_us = ((sr_hdisplay * 1000) / sr_clock);
/* Use ns/us then divide to preserve precision */
sr_entries = (((sr_latency_ns / line_time_us) + 1) *
pixel_size * sr_hdisplay) / 1000;
sr_entries = roundup(sr_entries / I915_FIFO_LINE_SIZE, 1);
DRM_DEBUG("self-refresh entries: %d\n", sr_entries);
srwm = I945_FIFO_SIZE - sr_entries;
if (srwm < 0)
srwm = 1;
srwm &= 0x3f;
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN);
}
DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n",
srwm);
/* 965 has limitations... */
I915_WRITE(DSPFW1, (srwm << DSPFW_SR_SHIFT) | (8 << 16) | (8 << 8) |
(8 << 0));
I915_WRITE(DSPFW2, (8 << 8) | (8 << 0));
}
static void i9xx_update_wm(struct drm_device *dev, int planea_clock,
int planeb_clock, int sr_hdisplay, int pixel_size)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t fwater_lo;
uint32_t fwater_hi;
int total_size, cacheline_size, cwm, srwm = 1;
int planea_wm, planeb_wm;
struct intel_watermark_params planea_params, planeb_params;
unsigned long line_time_us;
int sr_clock, sr_entries = 0;
/* Create copies of the base settings for each pipe */
if (IS_I965GM(dev) || IS_I945GM(dev))
planea_params = planeb_params = i945_wm_info;
else if (IS_I9XX(dev))
planea_params = planeb_params = i915_wm_info;
else
planea_params = planeb_params = i855_wm_info;
/* Grab a couple of global values before we overwrite them */
total_size = planea_params.fifo_size;
cacheline_size = planea_params.cacheline_size;
/* Update per-plane FIFO sizes */
planea_params.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
planeb_params.fifo_size = dev_priv->display.get_fifo_size(dev, 1);
planea_wm = intel_calculate_wm(planea_clock, &planea_params,
pixel_size, latency_ns);
planeb_wm = intel_calculate_wm(planeb_clock, &planeb_params,
pixel_size, latency_ns);
DRM_DEBUG_KMS("FIFO watermarks - A: %d, B: %d\n", planea_wm, planeb_wm);
/*
* Overlay gets an aggressive default since video jitter is bad.
*/
cwm = 2;
/* Calc sr entries for one plane configs */
if (HAS_FW_BLC(dev) && sr_hdisplay &&
(!planea_clock || !planeb_clock)) {
/* self-refresh has much higher latency */
const static int sr_latency_ns = 6000;
sr_clock = planea_clock ? planea_clock : planeb_clock;
line_time_us = ((sr_hdisplay * 1000) / sr_clock);
/* Use ns/us then divide to preserve precision */
sr_entries = (((sr_latency_ns / line_time_us) + 1) *
pixel_size * sr_hdisplay) / 1000;
sr_entries = roundup(sr_entries / cacheline_size, 1);
DRM_DEBUG_KMS("self-refresh entries: %d\n", sr_entries);
srwm = total_size - sr_entries;
if (srwm < 0)
srwm = 1;
I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN | (srwm & 0x3f));
}
DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d, B: %d, C: %d, SR %d\n",
planea_wm, planeb_wm, cwm, srwm);
fwater_lo = ((planeb_wm & 0x3f) << 16) | (planea_wm & 0x3f);
fwater_hi = (cwm & 0x1f);
/* Set request length to 8 cachelines per fetch */
fwater_lo = fwater_lo | (1 << 24) | (1 << 8);
fwater_hi = fwater_hi | (1 << 8);
I915_WRITE(FW_BLC, fwater_lo);
I915_WRITE(FW_BLC2, fwater_hi);
}
static void i830_update_wm(struct drm_device *dev, int planea_clock, int unused,
int unused2, int pixel_size)
{
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t fwater_lo = I915_READ(FW_BLC) & ~0xfff;
int planea_wm;
i830_wm_info.fifo_size = dev_priv->display.get_fifo_size(dev, 0);
planea_wm = intel_calculate_wm(planea_clock, &i830_wm_info,
pixel_size, latency_ns);
fwater_lo |= (3<<8) | planea_wm;
DRM_DEBUG_KMS("Setting FIFO watermarks - A: %d\n", planea_wm);
I915_WRITE(FW_BLC, fwater_lo);
}
/**
* intel_update_watermarks - update FIFO watermark values based on current modes
*
* Calculate watermark values for the various WM regs based on current mode
* and plane configuration.
*
* There are several cases to deal with here:
* - normal (i.e. non-self-refresh)
* - self-refresh (SR) mode
* - lines are large relative to FIFO size (buffer can hold up to 2)
* - lines are small relative to FIFO size (buffer can hold more than 2
* lines), so need to account for TLB latency
*
* The normal calculation is:
* watermark = dotclock * bytes per pixel * latency
* where latency is platform & configuration dependent (we assume pessimal
* values here).
*
* The SR calculation is:
* watermark = (trunc(latency/line time)+1) * surface width *
* bytes per pixel
* where
* line time = htotal / dotclock
* and latency is assumed to be high, as above.
*
* The final value programmed to the register should always be rounded up,
* and include an extra 2 entries to account for clock crossings.
*
* We don't use the sprite, so we can ignore that. And on Crestline we have
* to set the non-SR watermarks to 8.
*/
static void intel_update_watermarks(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc;
struct intel_crtc *intel_crtc;
int sr_hdisplay = 0;
unsigned long planea_clock = 0, planeb_clock = 0, sr_clock = 0;
int enabled = 0, pixel_size = 0;
if (!dev_priv->display.update_wm)
return;
/* Get the clock config from both planes */
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
intel_crtc = to_intel_crtc(crtc);
if (crtc->enabled) {
enabled++;
if (intel_crtc->plane == 0) {
DRM_DEBUG_KMS("plane A (pipe %d) clock: %d\n",
intel_crtc->pipe, crtc->mode.clock);
planea_clock = crtc->mode.clock;
} else {
DRM_DEBUG_KMS("plane B (pipe %d) clock: %d\n",
intel_crtc->pipe, crtc->mode.clock);
planeb_clock = crtc->mode.clock;
}
sr_hdisplay = crtc->mode.hdisplay;
sr_clock = crtc->mode.clock;
if (crtc->fb)
pixel_size = crtc->fb->bits_per_pixel / 8;
else
pixel_size = 4; /* by default */
}
}
if (enabled <= 0)
return;
/* Single plane configs can enable self refresh */
if (enabled == 1 && IS_IGD(dev))
igd_enable_cxsr(dev, sr_clock, pixel_size);
else if (IS_IGD(dev))
igd_disable_cxsr(dev);
dev_priv->display.update_wm(dev, planea_clock, planeb_clock,
sr_hdisplay, pixel_size);
}
static int intel_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
int fp_reg = (pipe == 0) ? FPA0 : FPB0;
int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
int dpll_md_reg = (intel_crtc->pipe == 0) ? DPLL_A_MD : DPLL_B_MD;
int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
int htot_reg = (pipe == 0) ? HTOTAL_A : HTOTAL_B;
int hblank_reg = (pipe == 0) ? HBLANK_A : HBLANK_B;
int hsync_reg = (pipe == 0) ? HSYNC_A : HSYNC_B;
int vtot_reg = (pipe == 0) ? VTOTAL_A : VTOTAL_B;
int vblank_reg = (pipe == 0) ? VBLANK_A : VBLANK_B;
int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
int dspsize_reg = (plane == 0) ? DSPASIZE : DSPBSIZE;
int dsppos_reg = (plane == 0) ? DSPAPOS : DSPBPOS;
int pipesrc_reg = (pipe == 0) ? PIPEASRC : PIPEBSRC;
int refclk, num_outputs = 0;
intel_clock_t clock, reduced_clock;
u32 dpll = 0, fp = 0, fp2 = 0, dspcntr, pipeconf;
bool ok, has_reduced_clock = false, is_sdvo = false, is_dvo = false;
bool is_crt = false, is_lvds = false, is_tv = false, is_dp = false;
bool is_edp = false;
struct drm_mode_config *mode_config = &dev->mode_config;
struct drm_connector *connector;
const intel_limit_t *limit;
int ret;
struct fdi_m_n m_n = {0};
int data_m1_reg = (pipe == 0) ? PIPEA_DATA_M1 : PIPEB_DATA_M1;
int data_n1_reg = (pipe == 0) ? PIPEA_DATA_N1 : PIPEB_DATA_N1;
int link_m1_reg = (pipe == 0) ? PIPEA_LINK_M1 : PIPEB_LINK_M1;
int link_n1_reg = (pipe == 0) ? PIPEA_LINK_N1 : PIPEB_LINK_N1;
int pch_fp_reg = (pipe == 0) ? PCH_FPA0 : PCH_FPB0;
int pch_dpll_reg = (pipe == 0) ? PCH_DPLL_A : PCH_DPLL_B;
int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
int lvds_reg = LVDS;
u32 temp;
int sdvo_pixel_multiply;
int target_clock;
drm_vblank_pre_modeset(dev, pipe);
list_for_each_entry(connector, &mode_config->connector_list, head) {
struct intel_output *intel_output = to_intel_output(connector);
if (!connector->encoder || connector->encoder->crtc != crtc)
continue;
switch (intel_output->type) {
case INTEL_OUTPUT_LVDS:
is_lvds = true;
break;
case INTEL_OUTPUT_SDVO:
case INTEL_OUTPUT_HDMI:
is_sdvo = true;
if (intel_output->needs_tv_clock)
is_tv = true;
break;
case INTEL_OUTPUT_DVO:
is_dvo = true;
break;
case INTEL_OUTPUT_TVOUT:
is_tv = true;
break;
case INTEL_OUTPUT_ANALOG:
is_crt = true;
break;
case INTEL_OUTPUT_DISPLAYPORT:
is_dp = true;
break;
case INTEL_OUTPUT_EDP:
is_edp = true;
break;
}
num_outputs++;
}
if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2) {
refclk = dev_priv->lvds_ssc_freq * 1000;
DRM_DEBUG_KMS("using SSC reference clock of %d MHz\n",
refclk / 1000);
} else if (IS_I9XX(dev)) {
refclk = 96000;
if (IS_IGDNG(dev))
refclk = 120000; /* 120Mhz refclk */
} else {
refclk = 48000;
}
/*
* 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.
*/
limit = intel_limit(crtc);
ok = limit->find_pll(limit, crtc, adjusted_mode->clock, refclk, &clock);
if (!ok) {
DRM_ERROR("Couldn't find PLL settings for mode!\n");
drm_vblank_post_modeset(dev, pipe);
return -EINVAL;
}
if (is_lvds && limit->find_reduced_pll &&
dev_priv->lvds_downclock_avail) {
memcpy(&reduced_clock, &clock, sizeof(intel_clock_t));
has_reduced_clock = limit->find_reduced_pll(limit, crtc,
dev_priv->lvds_downclock,
refclk,
&reduced_clock);
if (has_reduced_clock && (clock.p != reduced_clock.p)) {
/*
* If the different P is found, it means that we can't
* switch the display clock by using the FP0/FP1.
* In such case we will disable the LVDS downclock
* feature.
*/
DRM_DEBUG_KMS("Different P is found for "
"LVDS clock/downclock\n");
has_reduced_clock = 0;
}
}
/* SDVO TV has fixed PLL values depend on its clock range,
this mirrors vbios setting. */
if (is_sdvo && is_tv) {
if (adjusted_mode->clock >= 100000
&& adjusted_mode->clock < 140500) {
clock.p1 = 2;
clock.p2 = 10;
clock.n = 3;
clock.m1 = 16;
clock.m2 = 8;
} else if (adjusted_mode->clock >= 140500
&& adjusted_mode->clock <= 200000) {
clock.p1 = 1;
clock.p2 = 10;
clock.n = 6;
clock.m1 = 12;
clock.m2 = 8;
}
}
/* FDI link */
if (IS_IGDNG(dev)) {
int lane, link_bw, bpp;
/* eDP doesn't require FDI link, so just set DP M/N
according to current link config */
if (is_edp) {
struct drm_connector *edp;
target_clock = mode->clock;
edp = intel_pipe_get_output(crtc);
intel_edp_link_config(to_intel_output(edp),
&lane, &link_bw);
} else {
/* DP over FDI requires target mode clock
instead of link clock */
if (is_dp)
target_clock = mode->clock;
else
target_clock = adjusted_mode->clock;
lane = 4;
link_bw = 270000;
}
/* determine panel color depth */
temp = I915_READ(pipeconf_reg);
switch (temp & PIPE_BPC_MASK) {
case PIPE_8BPC:
bpp = 24;
break;
case PIPE_10BPC:
bpp = 30;
break;
case PIPE_6BPC:
bpp = 18;
break;
case PIPE_12BPC:
bpp = 36;
break;
default:
DRM_ERROR("unknown pipe bpc value\n");
bpp = 24;
}
igdng_compute_m_n(bpp, lane, target_clock,
link_bw, &m_n);
}
/* 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.
*/
if (IS_IGDNG(dev)) {
temp = I915_READ(PCH_DREF_CONTROL);
/* Always enable nonspread source */
temp &= ~DREF_NONSPREAD_SOURCE_MASK;
temp |= DREF_NONSPREAD_SOURCE_ENABLE;
I915_WRITE(PCH_DREF_CONTROL, temp);
POSTING_READ(PCH_DREF_CONTROL);
temp &= ~DREF_SSC_SOURCE_MASK;
temp |= DREF_SSC_SOURCE_ENABLE;
I915_WRITE(PCH_DREF_CONTROL, temp);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
if (is_edp) {
if (dev_priv->lvds_use_ssc) {
temp |= DREF_SSC1_ENABLE;
I915_WRITE(PCH_DREF_CONTROL, temp);
POSTING_READ(PCH_DREF_CONTROL);
udelay(200);
temp &= ~DREF_CPU_SOURCE_OUTPUT_MASK;
temp |= DREF_CPU_SOURCE_OUTPUT_DOWNSPREAD;
I915_WRITE(PCH_DREF_CONTROL, temp);
POSTING_READ(PCH_DREF_CONTROL);
} else {
temp |= DREF_CPU_SOURCE_OUTPUT_NONSPREAD;
I915_WRITE(PCH_DREF_CONTROL, temp);
POSTING_READ(PCH_DREF_CONTROL);
}
}
}
if (IS_IGD(dev)) {
fp = (1 << clock.n) << 16 | clock.m1 << 8 | clock.m2;
if (has_reduced_clock)
fp2 = (1 << reduced_clock.n) << 16 |
reduced_clock.m1 << 8 | reduced_clock.m2;
} else {
fp = clock.n << 16 | clock.m1 << 8 | clock.m2;
if (has_reduced_clock)
fp2 = reduced_clock.n << 16 | reduced_clock.m1 << 8 |
reduced_clock.m2;
}
if (!IS_IGDNG(dev))
dpll = DPLL_VGA_MODE_DIS;
if (IS_I9XX(dev)) {
if (is_lvds)
dpll |= DPLLB_MODE_LVDS;
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if (is_sdvo) {
dpll |= DPLL_DVO_HIGH_SPEED;
sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))
dpll |= (sdvo_pixel_multiply - 1) << SDVO_MULTIPLIER_SHIFT_HIRES;
else if (IS_IGDNG(dev))
dpll |= (sdvo_pixel_multiply - 1) << PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
}
if (is_dp)
dpll |= DPLL_DVO_HIGH_SPEED;
/* compute bitmask from p1 value */
if (IS_IGD(dev))
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT_IGD;
else {
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA01_P1_POST_DIV_SHIFT;
/* also FPA1 */
if (IS_IGDNG(dev))
dpll |= (1 << (clock.p1 - 1)) << DPLL_FPA1_P1_POST_DIV_SHIFT;
if (IS_G4X(dev) && has_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 (IS_I965G(dev) && !IS_IGDNG(dev))
dpll |= (6 << PLL_LOAD_PULSE_PHASE_SHIFT);
} else {
if (is_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;
}
}
if (is_sdvo && is_tv)
dpll |= PLL_REF_INPUT_TVCLKINBC;
else if (is_tv)
/* XXX: just matching BIOS for now */
/* dpll |= PLL_REF_INPUT_TVCLKINBC; */
dpll |= 3;
else if (is_lvds && dev_priv->lvds_use_ssc && num_outputs < 2)
dpll |= PLLB_REF_INPUT_SPREADSPECTRUMIN;
else
dpll |= PLL_REF_INPUT_DREFCLK;
/* setup pipeconf */
pipeconf = I915_READ(pipeconf_reg);
/* Set up the display plane register */
dspcntr = DISPPLANE_GAMMA_ENABLE;
/* IGDNG's plane is forced to pipe, bit 24 is to
enable color space conversion */
if (!IS_IGDNG(dev)) {
if (pipe == 0)
dspcntr &= ~DISPPLANE_SEL_PIPE_MASK;
else
dspcntr |= DISPPLANE_SEL_PIPE_B;
}
if (pipe == 0 && !IS_I965G(dev)) {
/* Enable pixel doubling when the dot clock is > 90% of the (display)
* core speed.
*
* XXX: No double-wide on 915GM pipe B. Is that the only reason for the
* pipe == 0 check?
*/
if (mode->clock >
dev_priv->display.get_display_clock_speed(dev) * 9 / 10)
pipeconf |= PIPEACONF_DOUBLE_WIDE;
else
pipeconf &= ~PIPEACONF_DOUBLE_WIDE;
}
dspcntr |= DISPLAY_PLANE_ENABLE;
pipeconf |= PIPEACONF_ENABLE;
dpll |= DPLL_VCO_ENABLE;
/* Disable the panel fitter if it was on our pipe */
if (!IS_IGDNG(dev) && intel_panel_fitter_pipe(dev) == pipe)
I915_WRITE(PFIT_CONTROL, 0);
DRM_DEBUG_KMS("Mode for pipe %c:\n", pipe == 0 ? 'A' : 'B');
drm_mode_debug_printmodeline(mode);
/* assign to IGDNG registers */
if (IS_IGDNG(dev)) {
fp_reg = pch_fp_reg;
dpll_reg = pch_dpll_reg;
}
if (is_edp) {
igdng_disable_pll_edp(crtc);
} else if ((dpll & DPLL_VCO_ENABLE)) {
I915_WRITE(fp_reg, fp);
I915_WRITE(dpll_reg, dpll & ~DPLL_VCO_ENABLE);
I915_READ(dpll_reg);
udelay(150);
}
/* The LVDS pin pair needs to be on before the DPLLs are enabled.
* This is an exception to the general rule that mode_set doesn't turn
* things on.
*/
if (is_lvds) {
u32 lvds;
if (IS_IGDNG(dev))
lvds_reg = PCH_LVDS;
lvds = I915_READ(lvds_reg);
lvds |= LVDS_PORT_EN | LVDS_A0A2_CLKA_POWER_UP | LVDS_PIPEB_SELECT;
/* set the corresponsding LVDS_BORDER bit */
lvds |= dev_priv->lvds_border_bits;
/* Set the B0-B3 data pairs corresponding to whether we're going to
* set the DPLLs for dual-channel mode or not.
*/
if (clock.p2 == 7)
lvds |= LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP;
else
lvds &= ~(LVDS_B0B3_POWER_UP | LVDS_CLKB_POWER_UP);
/* It would be nice to set 24 vs 18-bit mode (LVDS_A3_POWER_UP)
* appropriately here, but we need to look more thoroughly into how
* panels behave in the two modes.
*/
I915_WRITE(lvds_reg, lvds);
I915_READ(lvds_reg);
}
if (is_dp)
intel_dp_set_m_n(crtc, mode, adjusted_mode);
if (!is_edp) {
I915_WRITE(fp_reg, fp);
I915_WRITE(dpll_reg, dpll);
I915_READ(dpll_reg);
/* Wait for the clocks to stabilize. */
udelay(150);
if (IS_I965G(dev) && !IS_IGDNG(dev)) {
if (is_sdvo) {
sdvo_pixel_multiply = adjusted_mode->clock / mode->clock;
I915_WRITE(dpll_md_reg, (0 << DPLL_MD_UDI_DIVIDER_SHIFT) |
((sdvo_pixel_multiply - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT));
} else
I915_WRITE(dpll_md_reg, 0);
} else {
/* write it again -- the BIOS does, after all */
I915_WRITE(dpll_reg, dpll);
}
I915_READ(dpll_reg);
/* Wait for the clocks to stabilize. */
udelay(150);
}
if (is_lvds && has_reduced_clock && i915_powersave) {
I915_WRITE(fp_reg + 4, fp2);
intel_crtc->lowfreq_avail = true;
if (HAS_PIPE_CXSR(dev)) {
DRM_DEBUG_KMS("enabling CxSR downclocking\n");
pipeconf |= PIPECONF_CXSR_DOWNCLOCK;
}
} else {
I915_WRITE(fp_reg + 4, fp);
intel_crtc->lowfreq_avail = false;
if (HAS_PIPE_CXSR(dev)) {
DRM_DEBUG_KMS("disabling CxSR downclocking\n");
pipeconf &= ~PIPECONF_CXSR_DOWNCLOCK;
}
}
I915_WRITE(htot_reg, (adjusted_mode->crtc_hdisplay - 1) |
((adjusted_mode->crtc_htotal - 1) << 16));
I915_WRITE(hblank_reg, (adjusted_mode->crtc_hblank_start - 1) |
((adjusted_mode->crtc_hblank_end - 1) << 16));
I915_WRITE(hsync_reg, (adjusted_mode->crtc_hsync_start - 1) |
((adjusted_mode->crtc_hsync_end - 1) << 16));
I915_WRITE(vtot_reg, (adjusted_mode->crtc_vdisplay - 1) |
((adjusted_mode->crtc_vtotal - 1) << 16));
I915_WRITE(vblank_reg, (adjusted_mode->crtc_vblank_start - 1) |
((adjusted_mode->crtc_vblank_end - 1) << 16));
I915_WRITE(vsync_reg, (adjusted_mode->crtc_vsync_start - 1) |
((adjusted_mode->crtc_vsync_end - 1) << 16));
/* pipesrc and dspsize control the size that is scaled from, which should
* always be the user's requested size.
*/
if (!IS_IGDNG(dev)) {
I915_WRITE(dspsize_reg, ((mode->vdisplay - 1) << 16) |
(mode->hdisplay - 1));
I915_WRITE(dsppos_reg, 0);
}
I915_WRITE(pipesrc_reg, ((mode->hdisplay - 1) << 16) | (mode->vdisplay - 1));
if (IS_IGDNG(dev)) {
I915_WRITE(data_m1_reg, TU_SIZE(m_n.tu) | m_n.gmch_m);
I915_WRITE(data_n1_reg, TU_SIZE(m_n.tu) | m_n.gmch_n);
I915_WRITE(link_m1_reg, m_n.link_m);
I915_WRITE(link_n1_reg, m_n.link_n);
if (is_edp) {
igdng_set_pll_edp(crtc, adjusted_mode->clock);
} else {
/* enable FDI RX PLL too */
temp = I915_READ(fdi_rx_reg);
I915_WRITE(fdi_rx_reg, temp | FDI_RX_PLL_ENABLE);
udelay(200);
}
}
I915_WRITE(pipeconf_reg, pipeconf);
I915_READ(pipeconf_reg);
intel_wait_for_vblank(dev);
if (IS_IGDNG(dev)) {
/* enable address swizzle for tiling buffer */
temp = I915_READ(DISP_ARB_CTL);
I915_WRITE(DISP_ARB_CTL, temp | DISP_TILE_SURFACE_SWIZZLING);
}
I915_WRITE(dspcntr_reg, dspcntr);
/* Flush the plane changes */
ret = intel_pipe_set_base(crtc, x, y, old_fb);
if ((IS_I965G(dev) || plane == 0))
intel_update_fbc(crtc, &crtc->mode);
intel_update_watermarks(dev);
drm_vblank_post_modeset(dev, pipe);
return ret;
}
/** Loads the palette/gamma unit for the CRTC with the prepared values */
void intel_crtc_load_lut(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int palreg = (intel_crtc->pipe == 0) ? PALETTE_A : PALETTE_B;
int i;
/* The clocks have to be on to load the palette. */
if (!crtc->enabled)
return;
/* use legacy palette for IGDNG */
if (IS_IGDNG(dev))
palreg = (intel_crtc->pipe == 0) ? LGC_PALETTE_A :
LGC_PALETTE_B;
for (i = 0; i < 256; i++) {
I915_WRITE(palreg + 4 * i,
(intel_crtc->lut_r[i] << 16) |
(intel_crtc->lut_g[i] << 8) |
intel_crtc->lut_b[i]);
}
}
static int intel_crtc_cursor_set(struct drm_crtc *crtc,
struct drm_file *file_priv,
uint32_t handle,
uint32_t width, uint32_t height)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct drm_gem_object *bo;
struct drm_i915_gem_object *obj_priv;
int pipe = intel_crtc->pipe;
uint32_t control = (pipe == 0) ? CURACNTR : CURBCNTR;
uint32_t base = (pipe == 0) ? CURABASE : CURBBASE;
uint32_t temp = I915_READ(control);
size_t addr;
int ret;
DRM_DEBUG_KMS("\n");
/* if we want to turn off the cursor ignore width and height */
if (!handle) {
DRM_DEBUG_KMS("cursor off\n");
if (IS_MOBILE(dev) || IS_I9XX(dev)) {
temp &= ~(CURSOR_MODE | MCURSOR_GAMMA_ENABLE);
temp |= CURSOR_MODE_DISABLE;
} else {
temp &= ~(CURSOR_ENABLE | CURSOR_GAMMA_ENABLE);
}
addr = 0;
bo = NULL;
mutex_lock(&dev->struct_mutex);
goto finish;
}
/* Currently we only support 64x64 cursors */
if (width != 64 || height != 64) {
DRM_ERROR("we currently only support 64x64 cursors\n");
return -EINVAL;
}
bo = drm_gem_object_lookup(dev, file_priv, handle);
if (!bo)
return -ENOENT;
obj_priv = bo->driver_private;
if (bo->size < width * height * 4) {
DRM_ERROR("buffer is to small\n");
ret = -ENOMEM;
goto fail;
}
/* we only need to pin inside GTT if cursor is non-phy */
mutex_lock(&dev->struct_mutex);
if (!dev_priv->cursor_needs_physical) {
ret = i915_gem_object_pin(bo, PAGE_SIZE);
if (ret) {
DRM_ERROR("failed to pin cursor bo\n");
goto fail_locked;
}
addr = obj_priv->gtt_offset;
} else {
ret = i915_gem_attach_phys_object(dev, bo, (pipe == 0) ? I915_GEM_PHYS_CURSOR_0 : I915_GEM_PHYS_CURSOR_1);
if (ret) {
DRM_ERROR("failed to attach phys object\n");
goto fail_locked;
}
addr = obj_priv->phys_obj->handle->busaddr;
}
if (!IS_I9XX(dev))
I915_WRITE(CURSIZE, (height << 12) | width);
/* Hooray for CUR*CNTR differences */
if (IS_MOBILE(dev) || IS_I9XX(dev)) {
temp &= ~(CURSOR_MODE | MCURSOR_PIPE_SELECT);
temp |= CURSOR_MODE_64_ARGB_AX | MCURSOR_GAMMA_ENABLE;
temp |= (pipe << 28); /* Connect to correct pipe */
} else {
temp &= ~(CURSOR_FORMAT_MASK);
temp |= CURSOR_ENABLE;
temp |= CURSOR_FORMAT_ARGB | CURSOR_GAMMA_ENABLE;
}
finish:
I915_WRITE(control, temp);
I915_WRITE(base, addr);
if (intel_crtc->cursor_bo) {
if (dev_priv->cursor_needs_physical) {
if (intel_crtc->cursor_bo != bo)
i915_gem_detach_phys_object(dev, intel_crtc->cursor_bo);
} else
i915_gem_object_unpin(intel_crtc->cursor_bo);
drm_gem_object_unreference(intel_crtc->cursor_bo);
}
mutex_unlock(&dev->struct_mutex);
intel_crtc->cursor_addr = addr;
intel_crtc->cursor_bo = bo;
return 0;
fail:
mutex_lock(&dev->struct_mutex);
fail_locked:
drm_gem_object_unreference(bo);
mutex_unlock(&dev->struct_mutex);
return ret;
}
static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_framebuffer *intel_fb;
int pipe = intel_crtc->pipe;
uint32_t temp = 0;
uint32_t adder;
if (crtc->fb) {
intel_fb = to_intel_framebuffer(crtc->fb);
intel_mark_busy(dev, intel_fb->obj);
}
if (x < 0) {
temp |= CURSOR_POS_SIGN << CURSOR_X_SHIFT;
x = -x;
}
if (y < 0) {
temp |= CURSOR_POS_SIGN << CURSOR_Y_SHIFT;
y = -y;
}
temp |= x << CURSOR_X_SHIFT;
temp |= y << CURSOR_Y_SHIFT;
adder = intel_crtc->cursor_addr;
I915_WRITE((pipe == 0) ? CURAPOS : CURBPOS, temp);
I915_WRITE((pipe == 0) ? CURABASE : CURBBASE, adder);
return 0;
}
/** Sets the color ramps on behalf of RandR */
void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
u16 blue, int regno)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
intel_crtc->lut_r[regno] = red >> 8;
intel_crtc->lut_g[regno] = green >> 8;
intel_crtc->lut_b[regno] = blue >> 8;
}
void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, int regno)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
*red = intel_crtc->lut_r[regno] << 8;
*green = intel_crtc->lut_g[regno] << 8;
*blue = intel_crtc->lut_b[regno] << 8;
}
static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
u16 *blue, uint32_t size)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int i;
if (size != 256)
return;
for (i = 0; i < 256; i++) {
intel_crtc->lut_r[i] = red[i] >> 8;
intel_crtc->lut_g[i] = green[i] >> 8;
intel_crtc->lut_b[i] = blue[i] >> 8;
}
intel_crtc_load_lut(crtc);
}
/**
* Get a pipe with a simple mode set on it for doing load-based monitor
* detection.
*
* It will be up to the load-detect code to adjust the pipe as appropriate for
* its requirements. The pipe will be connected to no other outputs.
*
* Currently this code will only succeed if there is a pipe with no outputs
* configured for it. In the future, it could choose to temporarily disable
* some outputs to free up a pipe for its use.
*
* \return crtc, or NULL if no pipes are available.
*/
/* VESA 640x480x72Hz mode to set on the pipe */
static 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_crtc *intel_get_load_detect_pipe(struct intel_output *intel_output,
struct drm_display_mode *mode,
int *dpms_mode)
{
struct intel_crtc *intel_crtc;
struct drm_crtc *possible_crtc;
struct drm_crtc *supported_crtc =NULL;
struct drm_encoder *encoder = &intel_output->enc;
struct drm_crtc *crtc = NULL;
struct drm_device *dev = encoder->dev;
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
struct drm_crtc_helper_funcs *crtc_funcs;
int i = -1;
/*
* 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
* - if there are no unused crtcs available, try to use the first
* one we found that supports the connector
*/
/* See if we already have a CRTC for this connector */
if (encoder->crtc) {
crtc = encoder->crtc;
/* Make sure the crtc and connector are running */
intel_crtc = to_intel_crtc(crtc);
*dpms_mode = intel_crtc->dpms_mode;
if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
crtc_funcs = crtc->helper_private;
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
encoder_funcs->dpms(encoder, DRM_MODE_DPMS_ON);
}
return crtc;
}
/* Find an unused one (if possible) */
list_for_each_entry(possible_crtc, &dev->mode_config.crtc_list, head) {
i++;
if (!(encoder->possible_crtcs & (1 << i)))
continue;
if (!possible_crtc->enabled) {
crtc = possible_crtc;
break;
}
if (!supported_crtc)
supported_crtc = possible_crtc;
}
/*
* If we didn't find an unused CRTC, don't use any.
*/
if (!crtc) {
return NULL;
}
encoder->crtc = crtc;
intel_output->base.encoder = encoder;
intel_output->load_detect_temp = true;
intel_crtc = to_intel_crtc(crtc);
*dpms_mode = intel_crtc->dpms_mode;
if (!crtc->enabled) {
if (!mode)
mode = &load_detect_mode;
drm_crtc_helper_set_mode(crtc, mode, 0, 0, crtc->fb);
} else {
if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
crtc_funcs = crtc->helper_private;
crtc_funcs->dpms(crtc, DRM_MODE_DPMS_ON);
}
/* Add this connector to the crtc */
encoder_funcs->mode_set(encoder, &crtc->mode, &crtc->mode);
encoder_funcs->commit(encoder);
}
/* let the connector get through one full cycle before testing */
intel_wait_for_vblank(dev);
return crtc;
}
void intel_release_load_detect_pipe(struct intel_output *intel_output, int dpms_mode)
{
struct drm_encoder *encoder = &intel_output->enc;
struct drm_device *dev = encoder->dev;
struct drm_crtc *crtc = encoder->crtc;
struct drm_encoder_helper_funcs *encoder_funcs = encoder->helper_private;
struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
if (intel_output->load_detect_temp) {
encoder->crtc = NULL;
intel_output->base.encoder = NULL;
intel_output->load_detect_temp = false;
crtc->enabled = drm_helper_crtc_in_use(crtc);
drm_helper_disable_unused_functions(dev);
}
/* Switch crtc and output back off if necessary */
if (crtc->enabled && dpms_mode != DRM_MODE_DPMS_ON) {
if (encoder->crtc == crtc)
encoder_funcs->dpms(encoder, dpms_mode);
crtc_funcs->dpms(crtc, dpms_mode);
}
}
/* Returns the clock of the currently programmed mode of the given pipe. */
static int intel_crtc_clock_get(struct drm_device *dev, struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
u32 dpll = I915_READ((pipe == 0) ? DPLL_A : DPLL_B);
u32 fp;
intel_clock_t clock;
if ((dpll & DISPLAY_RATE_SELECT_FPA1) == 0)
fp = I915_READ((pipe == 0) ? FPA0 : FPB0);
else
fp = I915_READ((pipe == 0) ? FPA1 : FPB1);
clock.m1 = (fp & FP_M1_DIV_MASK) >> FP_M1_DIV_SHIFT;
if (IS_IGD(dev)) {
clock.n = ffs((fp & FP_N_IGD_DIV_MASK) >> FP_N_DIV_SHIFT) - 1;
clock.m2 = (fp & FP_M2_IGD_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_I9XX(dev)) {
if (IS_IGD(dev))
clock.p1 = ffs((dpll & DPLL_FPA01_P1_POST_DIV_MASK_IGD) >>
DPLL_FPA01_P1_POST_DIV_SHIFT_IGD);
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 0;
}
/* XXX: Handle the 100Mhz refclk */
intel_clock(dev, 96000, &clock);
} else {
bool is_lvds = (pipe == 1) && (I915_READ(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);
clock.p2 = 14;
if ((dpll & PLL_REF_INPUT_MASK) ==
PLLB_REF_INPUT_SPREADSPECTRUMIN) {
/* XXX: might not be 66MHz */
intel_clock(dev, 66000, &clock);
} else
intel_clock(dev, 48000, &clock);
} 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;
intel_clock(dev, 48000, &clock);
}
}
/* XXX: It would be nice to validate the clocks, but we can't reuse
* i830PllIsValid() because it relies on the xf86_config connector
* configuration being accurate, which it isn't necessarily.
*/
return clock.dot;
}
/** Returns the currently programmed mode of the given pipe. */
struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
struct drm_crtc *crtc)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
struct drm_display_mode *mode;
int htot = I915_READ((pipe == 0) ? HTOTAL_A : HTOTAL_B);
int hsync = I915_READ((pipe == 0) ? HSYNC_A : HSYNC_B);
int vtot = I915_READ((pipe == 0) ? VTOTAL_A : VTOTAL_B);
int vsync = I915_READ((pipe == 0) ? VSYNC_A : VSYNC_B);
mode = kzalloc(sizeof(*mode), GFP_KERNEL);
if (!mode)
return NULL;
mode->clock = intel_crtc_clock_get(dev, crtc);
mode->hdisplay = (htot & 0xffff) + 1;
mode->htotal = ((htot & 0xffff0000) >> 16) + 1;
mode->hsync_start = (hsync & 0xffff) + 1;
mode->hsync_end = ((hsync & 0xffff0000) >> 16) + 1;
mode->vdisplay = (vtot & 0xffff) + 1;
mode->vtotal = ((vtot & 0xffff0000) >> 16) + 1;
mode->vsync_start = (vsync & 0xffff) + 1;
mode->vsync_end = ((vsync & 0xffff0000) >> 16) + 1;
drm_mode_set_name(mode);
drm_mode_set_crtcinfo(mode, 0);
return mode;
}
#define GPU_IDLE_TIMEOUT 500 /* ms */
/* When this timer fires, we've been idle for awhile */
static void intel_gpu_idle_timer(unsigned long arg)
{
struct drm_device *dev = (struct drm_device *)arg;
drm_i915_private_t *dev_priv = dev->dev_private;
DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
dev_priv->busy = false;
queue_work(dev_priv->wq, &dev_priv->idle_work);
}
void intel_increase_renderclock(struct drm_device *dev, bool schedule)
{
drm_i915_private_t *dev_priv = dev->dev_private;
if (IS_IGDNG(dev))
return;
if (!dev_priv->render_reclock_avail) {
DRM_DEBUG_DRIVER("not reclocking render clock\n");
return;
}
/* Restore render clock frequency to original value */
if (IS_G4X(dev) || IS_I9XX(dev))
pci_write_config_word(dev->pdev, GCFGC, dev_priv->orig_clock);
else if (IS_I85X(dev))
pci_write_config_word(dev->pdev, HPLLCC, dev_priv->orig_clock);
DRM_DEBUG_DRIVER("increasing render clock frequency\n");
/* Schedule downclock */
if (schedule)
mod_timer(&dev_priv->idle_timer, jiffies +
msecs_to_jiffies(GPU_IDLE_TIMEOUT));
}
void intel_decrease_renderclock(struct drm_device *dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
if (IS_IGDNG(dev))
return;
if (!dev_priv->render_reclock_avail) {
DRM_DEBUG_DRIVER("not reclocking render clock\n");
return;
}
if (IS_G4X(dev)) {
u16 gcfgc;
/* Adjust render clock... */
pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
/* Down to minimum... */
gcfgc &= ~GM45_GC_RENDER_CLOCK_MASK;
gcfgc |= GM45_GC_RENDER_CLOCK_266_MHZ;
pci_write_config_word(dev->pdev, GCFGC, gcfgc);
} else if (IS_I965G(dev)) {
u16 gcfgc;
/* Adjust render clock... */
pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
/* Down to minimum... */
gcfgc &= ~I965_GC_RENDER_CLOCK_MASK;
gcfgc |= I965_GC_RENDER_CLOCK_267_MHZ;
pci_write_config_word(dev->pdev, GCFGC, gcfgc);
} else if (IS_I945G(dev) || IS_I945GM(dev)) {
u16 gcfgc;
/* Adjust render clock... */
pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
/* Down to minimum... */
gcfgc &= ~I945_GC_RENDER_CLOCK_MASK;
gcfgc |= I945_GC_RENDER_CLOCK_166_MHZ;
pci_write_config_word(dev->pdev, GCFGC, gcfgc);
} else if (IS_I915G(dev)) {
u16 gcfgc;
/* Adjust render clock... */
pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
/* Down to minimum... */
gcfgc &= ~I915_GC_RENDER_CLOCK_MASK;
gcfgc |= I915_GC_RENDER_CLOCK_166_MHZ;
pci_write_config_word(dev->pdev, GCFGC, gcfgc);
} else if (IS_I85X(dev)) {
u16 hpllcc;
/* Adjust render clock... */
pci_read_config_word(dev->pdev, HPLLCC, &hpllcc);
/* Up to maximum... */
hpllcc &= ~GC_CLOCK_CONTROL_MASK;
hpllcc |= GC_CLOCK_133_200;
pci_write_config_word(dev->pdev, HPLLCC, hpllcc);
}
DRM_DEBUG_DRIVER("decreasing render clock frequency\n");
}
/* Note that no increase function is needed for this - increase_renderclock()
* will also rewrite these bits
*/
void intel_decrease_displayclock(struct drm_device *dev)
{
if (IS_IGDNG(dev))
return;
if (IS_I945G(dev) || IS_I945GM(dev) || IS_I915G(dev) ||
IS_I915GM(dev)) {
u16 gcfgc;
/* Adjust render clock... */
pci_read_config_word(dev->pdev, GCFGC, &gcfgc);
/* Down to minimum... */
gcfgc &= ~0xf0;
gcfgc |= 0x80;
pci_write_config_word(dev->pdev, GCFGC, gcfgc);
}
}
#define CRTC_IDLE_TIMEOUT 1000 /* ms */
static void intel_crtc_idle_timer(unsigned long arg)
{
struct intel_crtc *intel_crtc = (struct intel_crtc *)arg;
struct drm_crtc *crtc = &intel_crtc->base;
drm_i915_private_t *dev_priv = crtc->dev->dev_private;
DRM_DEBUG_DRIVER("idle timer fired, downclocking\n");
intel_crtc->busy = false;
queue_work(dev_priv->wq, &dev_priv->idle_work);
}
static void intel_increase_pllclock(struct drm_crtc *crtc, bool schedule)
{
struct drm_device *dev = crtc->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
int dpll = I915_READ(dpll_reg);
if (IS_IGDNG(dev))
return;
if (!dev_priv->lvds_downclock_avail)
return;
if (!HAS_PIPE_CXSR(dev) && (dpll & DISPLAY_RATE_SELECT_FPA1)) {
DRM_DEBUG_DRIVER("upclocking LVDS\n");
/* Unlock panel regs */
I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
dpll &= ~DISPLAY_RATE_SELECT_FPA1;
I915_WRITE(dpll_reg, dpll);
dpll = I915_READ(dpll_reg);
intel_wait_for_vblank(dev);
dpll = I915_READ(dpll_reg);
if (dpll & DISPLAY_RATE_SELECT_FPA1)
DRM_DEBUG_DRIVER("failed to upclock LVDS!\n");
/* ...and lock them again */
I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
}
/* Schedule downclock */
if (schedule)
mod_timer(&intel_crtc->idle_timer, jiffies +
msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
}
static void intel_decrease_pllclock(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
drm_i915_private_t *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
int dpll = I915_READ(dpll_reg);
if (IS_IGDNG(dev))
return;
if (!dev_priv->lvds_downclock_avail)
return;
/*
* Since this is called by a timer, we should never get here in
* the manual case.
*/
if (!HAS_PIPE_CXSR(dev) && intel_crtc->lowfreq_avail) {
DRM_DEBUG_DRIVER("downclocking LVDS\n");
/* Unlock panel regs */
I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) | (0xabcd << 16));
dpll |= DISPLAY_RATE_SELECT_FPA1;
I915_WRITE(dpll_reg, dpll);
dpll = I915_READ(dpll_reg);
intel_wait_for_vblank(dev);
dpll = I915_READ(dpll_reg);
if (!(dpll & DISPLAY_RATE_SELECT_FPA1))
DRM_DEBUG_DRIVER("failed to downclock LVDS!\n");
/* ...and lock them again */
I915_WRITE(PP_CONTROL, I915_READ(PP_CONTROL) & 0x3);
}
}
/**
* intel_idle_update - adjust clocks for idleness
* @work: work struct
*
* Either the GPU or display (or both) went idle. Check the busy status
* here and adjust the CRTC and GPU clocks as necessary.
*/
static void intel_idle_update(struct work_struct *work)
{
drm_i915_private_t *dev_priv = container_of(work, drm_i915_private_t,
idle_work);
struct drm_device *dev = dev_priv->dev;
struct drm_crtc *crtc;
struct intel_crtc *intel_crtc;
if (!i915_powersave)
return;
mutex_lock(&dev->struct_mutex);
/* GPU isn't processing, downclock it. */
if (!dev_priv->busy) {
intel_decrease_renderclock(dev);
intel_decrease_displayclock(dev);
}
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
/* Skip inactive CRTCs */
if (!crtc->fb)
continue;
intel_crtc = to_intel_crtc(crtc);
if (!intel_crtc->busy)
intel_decrease_pllclock(crtc);
}
mutex_unlock(&dev->struct_mutex);
}
/**
* intel_mark_busy - mark the GPU and possibly the display busy
* @dev: drm device
* @obj: object we're operating on
*
* Callers can use this function to indicate that the GPU is busy processing
* commands. If @obj matches one of the CRTC objects (i.e. it's a scanout
* buffer), we'll also mark the display as busy, so we know to increase its
* clock frequency.
*/
void intel_mark_busy(struct drm_device *dev, struct drm_gem_object *obj)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_crtc *crtc = NULL;
struct intel_framebuffer *intel_fb;
struct intel_crtc *intel_crtc;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return;
dev_priv->busy = true;
intel_increase_renderclock(dev, true);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
if (!crtc->fb)
continue;
intel_crtc = to_intel_crtc(crtc);
intel_fb = to_intel_framebuffer(crtc->fb);
if (intel_fb->obj == obj) {
if (!intel_crtc->busy) {
/* Non-busy -> busy, upclock */
intel_increase_pllclock(crtc, true);
intel_crtc->busy = true;
} else {
/* Busy -> busy, put off timer */
mod_timer(&intel_crtc->idle_timer, jiffies +
msecs_to_jiffies(CRTC_IDLE_TIMEOUT));
}
}
}
}
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);
}
static const struct drm_crtc_helper_funcs intel_helper_funcs = {
.dpms = intel_crtc_dpms,
.mode_fixup = intel_crtc_mode_fixup,
.mode_set = intel_crtc_mode_set,
.mode_set_base = intel_pipe_set_base,
.prepare = intel_crtc_prepare,
.commit = intel_crtc_commit,
.load_lut = intel_crtc_load_lut,
};
static const struct drm_crtc_funcs intel_crtc_funcs = {
.cursor_set = intel_crtc_cursor_set,
.cursor_move = intel_crtc_cursor_move,
.gamma_set = intel_crtc_gamma_set,
.set_config = drm_crtc_helper_set_config,
.destroy = intel_crtc_destroy,
};
static void intel_crtc_init(struct drm_device *dev, int pipe)
{
struct intel_crtc *intel_crtc;
int i;
intel_crtc = kzalloc(sizeof(struct intel_crtc) + (INTELFB_CONN_LIMIT * sizeof(struct drm_connector *)), GFP_KERNEL);
if (intel_crtc == NULL)
return;
drm_crtc_init(dev, &intel_crtc->base, &intel_crtc_funcs);
drm_mode_crtc_set_gamma_size(&intel_crtc->base, 256);
intel_crtc->pipe = pipe;
intel_crtc->plane = pipe;
for (i = 0; i < 256; i++) {
intel_crtc->lut_r[i] = i;
intel_crtc->lut_g[i] = i;
intel_crtc->lut_b[i] = i;
}
/* Swap pipes & planes for FBC on pre-965 */
intel_crtc->pipe = pipe;
intel_crtc->plane = pipe;
if (IS_MOBILE(dev) && (IS_I9XX(dev) && !IS_I965G(dev))) {
DRM_DEBUG_KMS("swapping pipes & planes for FBC\n");
intel_crtc->plane = ((pipe == 0) ? 1 : 0);
}
intel_crtc->cursor_addr = 0;
intel_crtc->dpms_mode = DRM_MODE_DPMS_OFF;
drm_crtc_helper_add(&intel_crtc->base, &intel_helper_funcs);
intel_crtc->busy = false;
setup_timer(&intel_crtc->idle_timer, intel_crtc_idle_timer,
(unsigned long)intel_crtc);
}
int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
struct drm_file *file_priv)
{
drm_i915_private_t *dev_priv = dev->dev_private;
struct drm_i915_get_pipe_from_crtc_id *pipe_from_crtc_id = data;
struct drm_mode_object *drmmode_obj;
struct intel_crtc *crtc;
if (!dev_priv) {
DRM_ERROR("called with no initialization\n");
return -EINVAL;
}
drmmode_obj = drm_mode_object_find(dev, pipe_from_crtc_id->crtc_id,
DRM_MODE_OBJECT_CRTC);
if (!drmmode_obj) {
DRM_ERROR("no such CRTC id\n");
return -EINVAL;
}
crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
pipe_from_crtc_id->pipe = crtc->pipe;
return 0;
}
struct drm_crtc *intel_get_crtc_from_pipe(struct drm_device *dev, int pipe)
{
struct drm_crtc *crtc = NULL;
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
if (intel_crtc->pipe == pipe)
break;
}
return crtc;
}
static int intel_connector_clones(struct drm_device *dev, int type_mask)
{
int index_mask = 0;
struct drm_connector *connector;
int entry = 0;
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
struct intel_output *intel_output = to_intel_output(connector);
if (type_mask & intel_output->clone_mask)
index_mask |= (1 << entry);
entry++;
}
return index_mask;
}
static void intel_setup_outputs(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_connector *connector;
intel_crt_init(dev);
/* Set up integrated LVDS */
if (IS_MOBILE(dev) && !IS_I830(dev))
intel_lvds_init(dev);
if (IS_IGDNG(dev)) {
int found;
if (IS_MOBILE(dev) && (I915_READ(DP_A) & DP_DETECTED))
intel_dp_init(dev, DP_A);
if (I915_READ(HDMIB) & PORT_DETECTED) {
/* check SDVOB */
/* found = intel_sdvo_init(dev, HDMIB); */
found = 0;
if (!found)
intel_hdmi_init(dev, HDMIB);
if (!found && (I915_READ(PCH_DP_B) & DP_DETECTED))
intel_dp_init(dev, PCH_DP_B);
}
if (I915_READ(HDMIC) & PORT_DETECTED)
intel_hdmi_init(dev, HDMIC);
if (I915_READ(HDMID) & PORT_DETECTED)
intel_hdmi_init(dev, HDMID);
if (I915_READ(PCH_DP_C) & DP_DETECTED)
intel_dp_init(dev, PCH_DP_C);
if (I915_READ(PCH_DP_D) & DP_DETECTED)
intel_dp_init(dev, PCH_DP_D);
} else if (IS_I9XX(dev)) {
bool found = false;
if (I915_READ(SDVOB) & SDVO_DETECTED) {
found = intel_sdvo_init(dev, SDVOB);
if (!found && SUPPORTS_INTEGRATED_HDMI(dev))
intel_hdmi_init(dev, SDVOB);
if (!found && SUPPORTS_INTEGRATED_DP(dev))
intel_dp_init(dev, DP_B);
}
/* Before G4X SDVOC doesn't have its own detect register */
if (I915_READ(SDVOB) & SDVO_DETECTED)
found = intel_sdvo_init(dev, SDVOC);
if (!found && (I915_READ(SDVOC) & SDVO_DETECTED)) {
if (SUPPORTS_INTEGRATED_HDMI(dev))
intel_hdmi_init(dev, SDVOC);
if (SUPPORTS_INTEGRATED_DP(dev))
intel_dp_init(dev, DP_C);
}
if (SUPPORTS_INTEGRATED_DP(dev) && (I915_READ(DP_D) & DP_DETECTED))
intel_dp_init(dev, DP_D);
} else
intel_dvo_init(dev);
if (IS_I9XX(dev) && IS_MOBILE(dev) && !IS_IGDNG(dev))
intel_tv_init(dev);
list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
struct intel_output *intel_output = to_intel_output(connector);
struct drm_encoder *encoder = &intel_output->enc;
encoder->possible_crtcs = intel_output->crtc_mask;
encoder->possible_clones = intel_connector_clones(dev,
intel_output->clone_mask);
}
}
static void intel_user_framebuffer_destroy(struct drm_framebuffer *fb)
{
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct drm_device *dev = fb->dev;
if (fb->fbdev)
intelfb_remove(dev, fb);
drm_framebuffer_cleanup(fb);
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(intel_fb->obj);
mutex_unlock(&dev->struct_mutex);
kfree(intel_fb);
}
static int intel_user_framebuffer_create_handle(struct drm_framebuffer *fb,
struct drm_file *file_priv,
unsigned int *handle)
{
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct drm_gem_object *object = intel_fb->obj;
return drm_gem_handle_create(file_priv, object, handle);
}
static const struct drm_framebuffer_funcs intel_fb_funcs = {
.destroy = intel_user_framebuffer_destroy,
.create_handle = intel_user_framebuffer_create_handle,
};
int intel_framebuffer_create(struct drm_device *dev,
struct drm_mode_fb_cmd *mode_cmd,
struct drm_framebuffer **fb,
struct drm_gem_object *obj)
{
struct intel_framebuffer *intel_fb;
int ret;
intel_fb = kzalloc(sizeof(*intel_fb), GFP_KERNEL);
if (!intel_fb)
return -ENOMEM;
ret = drm_framebuffer_init(dev, &intel_fb->base, &intel_fb_funcs);
if (ret) {
DRM_ERROR("framebuffer init failed %d\n", ret);
return ret;
}
drm_helper_mode_fill_fb_struct(&intel_fb->base, mode_cmd);
intel_fb->obj = obj;
*fb = &intel_fb->base;
return 0;
}
static struct drm_framebuffer *
intel_user_framebuffer_create(struct drm_device *dev,
struct drm_file *filp,
struct drm_mode_fb_cmd *mode_cmd)
{
struct drm_gem_object *obj;
struct drm_framebuffer *fb;
int ret;
obj = drm_gem_object_lookup(dev, filp, mode_cmd->handle);
if (!obj)
return NULL;
ret = intel_framebuffer_create(dev, mode_cmd, &fb, obj);
if (ret) {
mutex_lock(&dev->struct_mutex);
drm_gem_object_unreference(obj);
mutex_unlock(&dev->struct_mutex);
return NULL;
}
return fb;
}
static const struct drm_mode_config_funcs intel_mode_funcs = {
.fb_create = intel_user_framebuffer_create,
.fb_changed = intelfb_probe,
};
void intel_init_clock_gating(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
/*
* Disable clock gating reported to work incorrectly according to the
* specs, but enable as much else as we can.
*/
if (IS_IGDNG(dev)) {
return;
} else if (IS_G4X(dev)) {
uint32_t dspclk_gate;
I915_WRITE(RENCLK_GATE_D1, 0);
I915_WRITE(RENCLK_GATE_D2, VF_UNIT_CLOCK_GATE_DISABLE |
GS_UNIT_CLOCK_GATE_DISABLE |
CL_UNIT_CLOCK_GATE_DISABLE);
I915_WRITE(RAMCLK_GATE_D, 0);
dspclk_gate = VRHUNIT_CLOCK_GATE_DISABLE |
OVRUNIT_CLOCK_GATE_DISABLE |
OVCUNIT_CLOCK_GATE_DISABLE;
if (IS_GM45(dev))
dspclk_gate |= DSSUNIT_CLOCK_GATE_DISABLE;
I915_WRITE(DSPCLK_GATE_D, dspclk_gate);
} else if (IS_I965GM(dev)) {
I915_WRITE(RENCLK_GATE_D1, I965_RCC_CLOCK_GATE_DISABLE);
I915_WRITE(RENCLK_GATE_D2, 0);
I915_WRITE(DSPCLK_GATE_D, 0);
I915_WRITE(RAMCLK_GATE_D, 0);
I915_WRITE16(DEUC, 0);
} else if (IS_I965G(dev)) {
I915_WRITE(RENCLK_GATE_D1, I965_RCZ_CLOCK_GATE_DISABLE |
I965_RCC_CLOCK_GATE_DISABLE |
I965_RCPB_CLOCK_GATE_DISABLE |
I965_ISC_CLOCK_GATE_DISABLE |
I965_FBC_CLOCK_GATE_DISABLE);
I915_WRITE(RENCLK_GATE_D2, 0);
} else if (IS_I9XX(dev)) {
u32 dstate = I915_READ(D_STATE);
dstate |= DSTATE_PLL_D3_OFF | DSTATE_GFX_CLOCK_GATING |
DSTATE_DOT_CLOCK_GATING;
I915_WRITE(D_STATE, dstate);
} else if (IS_I85X(dev) || IS_I865G(dev)) {
I915_WRITE(RENCLK_GATE_D1, SV_CLOCK_GATE_DISABLE);
} else if (IS_I830(dev)) {
I915_WRITE(DSPCLK_GATE_D, OVRUNIT_CLOCK_GATE_DISABLE);
}
/*
* GPU can automatically power down the render unit if given a page
* to save state.
*/
if (I915_HAS_RC6(dev)) {
struct drm_gem_object *pwrctx;
struct drm_i915_gem_object *obj_priv;
int ret;
pwrctx = drm_gem_object_alloc(dev, 4096);
if (!pwrctx) {
DRM_DEBUG("failed to alloc power context, RC6 disabled\n");
goto out;
}
ret = i915_gem_object_pin(pwrctx, 4096);
if (ret) {
DRM_ERROR("failed to pin power context: %d\n", ret);
drm_gem_object_unreference(pwrctx);
goto out;
}
i915_gem_object_set_to_gtt_domain(pwrctx, 1);
obj_priv = pwrctx->driver_private;
I915_WRITE(PWRCTXA, obj_priv->gtt_offset | PWRCTX_EN);
I915_WRITE(MCHBAR_RENDER_STANDBY,
I915_READ(MCHBAR_RENDER_STANDBY) & ~RCX_SW_EXIT);
dev_priv->pwrctx = pwrctx;
}
out:
return;
}
/* Set up chip specific display functions */
static void intel_init_display(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
/* We always want a DPMS function */
if (IS_IGDNG(dev))
dev_priv->display.dpms = igdng_crtc_dpms;
else
dev_priv->display.dpms = i9xx_crtc_dpms;
/* Only mobile has FBC, leave pointers NULL for other chips */
if (IS_MOBILE(dev)) {
if (IS_GM45(dev)) {
dev_priv->display.fbc_enabled = g4x_fbc_enabled;
dev_priv->display.enable_fbc = g4x_enable_fbc;
dev_priv->display.disable_fbc = g4x_disable_fbc;
} else if (IS_I965GM(dev) || IS_I945GM(dev) || IS_I915GM(dev)) {
dev_priv->display.fbc_enabled = i8xx_fbc_enabled;
dev_priv->display.enable_fbc = i8xx_enable_fbc;
dev_priv->display.disable_fbc = i8xx_disable_fbc;
}
/* 855GM needs testing */
}
/* Returns the core display clock speed */
if (IS_I945G(dev) || (IS_G33(dev) && ! IS_IGDGM(dev)))
dev_priv->display.get_display_clock_speed =
i945_get_display_clock_speed;
else if (IS_I915G(dev))
dev_priv->display.get_display_clock_speed =
i915_get_display_clock_speed;
else if (IS_I945GM(dev) || IS_845G(dev) || IS_IGDGM(dev))
dev_priv->display.get_display_clock_speed =
i9xx_misc_get_display_clock_speed;
else if (IS_I915GM(dev))
dev_priv->display.get_display_clock_speed =
i915gm_get_display_clock_speed;
else if (IS_I865G(dev))
dev_priv->display.get_display_clock_speed =
i865_get_display_clock_speed;
else if (IS_I85X(dev))
dev_priv->display.get_display_clock_speed =
i855_get_display_clock_speed;
else /* 852, 830 */
dev_priv->display.get_display_clock_speed =
i830_get_display_clock_speed;
/* For FIFO watermark updates */
if (IS_IGDNG(dev))
dev_priv->display.update_wm = NULL;
else if (IS_G4X(dev))
dev_priv->display.update_wm = g4x_update_wm;
else if (IS_I965G(dev))
dev_priv->display.update_wm = i965_update_wm;
else if (IS_I9XX(dev) || IS_MOBILE(dev)) {
dev_priv->display.update_wm = i9xx_update_wm;
dev_priv->display.get_fifo_size = i9xx_get_fifo_size;
} else {
if (IS_I85X(dev))
dev_priv->display.get_fifo_size = i85x_get_fifo_size;
else if (IS_845G(dev))
dev_priv->display.get_fifo_size = i845_get_fifo_size;
else
dev_priv->display.get_fifo_size = i830_get_fifo_size;
dev_priv->display.update_wm = i830_update_wm;
}
}
void intel_modeset_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
int num_pipe;
int i;
drm_mode_config_init(dev);
dev->mode_config.min_width = 0;
dev->mode_config.min_height = 0;
dev->mode_config.funcs = (void *)&intel_mode_funcs;
intel_init_display(dev);
if (IS_I965G(dev)) {
dev->mode_config.max_width = 8192;
dev->mode_config.max_height = 8192;
} else if (IS_I9XX(dev)) {
dev->mode_config.max_width = 4096;
dev->mode_config.max_height = 4096;
} else {
dev->mode_config.max_width = 2048;
dev->mode_config.max_height = 2048;
}
/* set memory base */
if (IS_I9XX(dev))
dev->mode_config.fb_base = pci_resource_start(dev->pdev, 2);
else
dev->mode_config.fb_base = pci_resource_start(dev->pdev, 0);
if (IS_MOBILE(dev) || IS_I9XX(dev))
num_pipe = 2;
else
num_pipe = 1;
DRM_DEBUG_KMS("%d display pipe%s available.\n",
num_pipe, num_pipe > 1 ? "s" : "");
if (IS_I85X(dev))
pci_read_config_word(dev->pdev, HPLLCC, &dev_priv->orig_clock);
else if (IS_I9XX(dev) || IS_G4X(dev))
pci_read_config_word(dev->pdev, GCFGC, &dev_priv->orig_clock);
for (i = 0; i < num_pipe; i++) {
intel_crtc_init(dev, i);
}
intel_setup_outputs(dev);
intel_init_clock_gating(dev);
INIT_WORK(&dev_priv->idle_work, intel_idle_update);
setup_timer(&dev_priv->idle_timer, intel_gpu_idle_timer,
(unsigned long)dev);
intel_setup_overlay(dev);
}
void intel_modeset_cleanup(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc;
struct intel_crtc *intel_crtc;
mutex_lock(&dev->struct_mutex);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
/* Skip inactive CRTCs */
if (!crtc->fb)
continue;
intel_crtc = to_intel_crtc(crtc);
intel_increase_pllclock(crtc, false);
del_timer_sync(&intel_crtc->idle_timer);
}
intel_increase_renderclock(dev, false);
del_timer_sync(&dev_priv->idle_timer);
mutex_unlock(&dev->struct_mutex);
if (dev_priv->display.disable_fbc)
dev_priv->display.disable_fbc(dev);
if (dev_priv->pwrctx) {
i915_gem_object_unpin(dev_priv->pwrctx);
drm_gem_object_unreference(dev_priv->pwrctx);
}
drm_mode_config_cleanup(dev);
}
/* current intel driver doesn't take advantage of encoders
always give back the encoder for the connector
*/
struct drm_encoder *intel_best_encoder(struct drm_connector *connector)
{
struct intel_output *intel_output = to_intel_output(connector);
return &intel_output->enc;
}
/*
* set vga decode state - true == enable VGA decode
*/
int intel_modeset_vga_set_state(struct drm_device *dev, bool state)
{
struct drm_i915_private *dev_priv = dev->dev_private;
u16 gmch_ctrl;
pci_read_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, &gmch_ctrl);
if (state)
gmch_ctrl &= ~INTEL_GMCH_VGA_DISABLE;
else
gmch_ctrl |= INTEL_GMCH_VGA_DISABLE;
pci_write_config_word(dev_priv->bridge_dev, INTEL_GMCH_CTRL, gmch_ctrl);
return 0;
}
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