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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-05 10:46:40 +07:00
6c5ed5ae35
mode_valid() called from drm_helper_probe_single_connector_modes() may need to look at connector->state because what a valid mode is may depend on connector properties being set. For example some HDMI modes might be rejected when a connector property forces the connector into DVI mode. Some implementations of detect() already lock all state, so we have to pass an acquire_ctx to them to prevent a deadlock. This means changing the function signature of detect() slightly, and passing the acquire_ctx for locking multiple crtc's. For the callbacks, it will always be non-zero. To allow callers not to worry about this, drm_helper_probe_detect_ctx is added which might handle -EDEADLK for you. Changes since v1: - Always set ctx parameter. Changes since v2: - Always take connection_mutex when probing. Changes since v3: - Remove the ctx from intel_dp_long_pulse, and add WARN_ON(!connection_mutex) (danvet) - Update docs to clarify the locking situation. (danvet) Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Boris Brezillon <boris.brezillon@free-electrons.com> Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Link: http://patchwork.freedesktop.org/patch/msgid/1491504920-4017-1-git-send-email-maarten.lankhorst@linux.intel.com
950 lines
26 KiB
C
950 lines
26 KiB
C
/*
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* Copyright © 2006-2007 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Eric Anholt <eric@anholt.net>
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*/
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#include <linux/dmi.h>
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#include <linux/i2c.h>
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#include <linux/slab.h>
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#include <drm/drmP.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_crtc_helper.h>
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#include <drm/drm_edid.h>
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#include "intel_drv.h"
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#include <drm/i915_drm.h>
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#include "i915_drv.h"
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/* Here's the desired hotplug mode */
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#define ADPA_HOTPLUG_BITS (ADPA_CRT_HOTPLUG_PERIOD_128 | \
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ADPA_CRT_HOTPLUG_WARMUP_10MS | \
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ADPA_CRT_HOTPLUG_SAMPLE_4S | \
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ADPA_CRT_HOTPLUG_VOLTAGE_50 | \
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ADPA_CRT_HOTPLUG_VOLREF_325MV | \
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ADPA_CRT_HOTPLUG_ENABLE)
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struct intel_crt {
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struct intel_encoder base;
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/* DPMS state is stored in the connector, which we need in the
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* encoder's enable/disable callbacks */
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struct intel_connector *connector;
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bool force_hotplug_required;
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i915_reg_t adpa_reg;
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};
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static struct intel_crt *intel_encoder_to_crt(struct intel_encoder *encoder)
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{
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return container_of(encoder, struct intel_crt, base);
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}
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static struct intel_crt *intel_attached_crt(struct drm_connector *connector)
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{
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return intel_encoder_to_crt(intel_attached_encoder(connector));
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}
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static bool intel_crt_get_hw_state(struct intel_encoder *encoder,
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enum pipe *pipe)
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{
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struct drm_device *dev = encoder->base.dev;
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struct drm_i915_private *dev_priv = to_i915(dev);
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struct intel_crt *crt = intel_encoder_to_crt(encoder);
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u32 tmp;
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bool ret;
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if (!intel_display_power_get_if_enabled(dev_priv,
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encoder->power_domain))
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return false;
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ret = false;
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tmp = I915_READ(crt->adpa_reg);
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if (!(tmp & ADPA_DAC_ENABLE))
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goto out;
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if (HAS_PCH_CPT(dev_priv))
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*pipe = PORT_TO_PIPE_CPT(tmp);
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else
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*pipe = PORT_TO_PIPE(tmp);
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ret = true;
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out:
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intel_display_power_put(dev_priv, encoder->power_domain);
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return ret;
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}
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static unsigned int intel_crt_get_flags(struct intel_encoder *encoder)
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{
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struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
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struct intel_crt *crt = intel_encoder_to_crt(encoder);
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u32 tmp, flags = 0;
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tmp = I915_READ(crt->adpa_reg);
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if (tmp & ADPA_HSYNC_ACTIVE_HIGH)
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flags |= DRM_MODE_FLAG_PHSYNC;
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else
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flags |= DRM_MODE_FLAG_NHSYNC;
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if (tmp & ADPA_VSYNC_ACTIVE_HIGH)
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flags |= DRM_MODE_FLAG_PVSYNC;
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else
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flags |= DRM_MODE_FLAG_NVSYNC;
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return flags;
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}
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static void intel_crt_get_config(struct intel_encoder *encoder,
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struct intel_crtc_state *pipe_config)
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{
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pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder);
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pipe_config->base.adjusted_mode.crtc_clock = pipe_config->port_clock;
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}
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static void hsw_crt_get_config(struct intel_encoder *encoder,
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struct intel_crtc_state *pipe_config)
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{
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struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
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intel_ddi_get_config(encoder, pipe_config);
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pipe_config->base.adjusted_mode.flags &= ~(DRM_MODE_FLAG_PHSYNC |
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DRM_MODE_FLAG_NHSYNC |
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DRM_MODE_FLAG_PVSYNC |
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DRM_MODE_FLAG_NVSYNC);
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pipe_config->base.adjusted_mode.flags |= intel_crt_get_flags(encoder);
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pipe_config->base.adjusted_mode.crtc_clock = lpt_get_iclkip(dev_priv);
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}
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/* Note: The caller is required to filter out dpms modes not supported by the
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* platform. */
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static void intel_crt_set_dpms(struct intel_encoder *encoder,
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struct intel_crtc_state *crtc_state,
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int mode)
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{
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struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
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struct intel_crt *crt = intel_encoder_to_crt(encoder);
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struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
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const struct drm_display_mode *adjusted_mode = &crtc_state->base.adjusted_mode;
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u32 adpa;
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if (INTEL_GEN(dev_priv) >= 5)
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adpa = ADPA_HOTPLUG_BITS;
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else
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adpa = 0;
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if (adjusted_mode->flags & DRM_MODE_FLAG_PHSYNC)
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adpa |= ADPA_HSYNC_ACTIVE_HIGH;
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if (adjusted_mode->flags & DRM_MODE_FLAG_PVSYNC)
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adpa |= ADPA_VSYNC_ACTIVE_HIGH;
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/* For CPT allow 3 pipe config, for others just use A or B */
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if (HAS_PCH_LPT(dev_priv))
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; /* Those bits don't exist here */
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else if (HAS_PCH_CPT(dev_priv))
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adpa |= PORT_TRANS_SEL_CPT(crtc->pipe);
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else if (crtc->pipe == 0)
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adpa |= ADPA_PIPE_A_SELECT;
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else
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adpa |= ADPA_PIPE_B_SELECT;
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if (!HAS_PCH_SPLIT(dev_priv))
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I915_WRITE(BCLRPAT(crtc->pipe), 0);
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switch (mode) {
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case DRM_MODE_DPMS_ON:
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adpa |= ADPA_DAC_ENABLE;
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break;
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case DRM_MODE_DPMS_STANDBY:
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adpa |= ADPA_DAC_ENABLE | ADPA_HSYNC_CNTL_DISABLE;
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break;
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case DRM_MODE_DPMS_SUSPEND:
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adpa |= ADPA_DAC_ENABLE | ADPA_VSYNC_CNTL_DISABLE;
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break;
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case DRM_MODE_DPMS_OFF:
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adpa |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE;
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break;
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}
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I915_WRITE(crt->adpa_reg, adpa);
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}
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static void intel_disable_crt(struct intel_encoder *encoder,
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struct intel_crtc_state *old_crtc_state,
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struct drm_connector_state *old_conn_state)
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{
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intel_crt_set_dpms(encoder, old_crtc_state, DRM_MODE_DPMS_OFF);
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}
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static void pch_disable_crt(struct intel_encoder *encoder,
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struct intel_crtc_state *old_crtc_state,
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struct drm_connector_state *old_conn_state)
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{
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}
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static void pch_post_disable_crt(struct intel_encoder *encoder,
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struct intel_crtc_state *old_crtc_state,
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struct drm_connector_state *old_conn_state)
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{
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intel_disable_crt(encoder, old_crtc_state, old_conn_state);
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}
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static void hsw_post_disable_crt(struct intel_encoder *encoder,
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struct intel_crtc_state *old_crtc_state,
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struct drm_connector_state *old_conn_state)
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{
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struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
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pch_post_disable_crt(encoder, old_crtc_state, old_conn_state);
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lpt_disable_pch_transcoder(dev_priv);
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lpt_disable_iclkip(dev_priv);
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intel_ddi_fdi_post_disable(encoder, old_crtc_state, old_conn_state);
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}
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static void intel_enable_crt(struct intel_encoder *encoder,
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struct intel_crtc_state *pipe_config,
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struct drm_connector_state *conn_state)
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{
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intel_crt_set_dpms(encoder, pipe_config, DRM_MODE_DPMS_ON);
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}
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static enum drm_mode_status
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intel_crt_mode_valid(struct drm_connector *connector,
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struct drm_display_mode *mode)
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{
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struct drm_device *dev = connector->dev;
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struct drm_i915_private *dev_priv = to_i915(dev);
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int max_dotclk = dev_priv->max_dotclk_freq;
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int max_clock;
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if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
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return MODE_NO_DBLESCAN;
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if (mode->clock < 25000)
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return MODE_CLOCK_LOW;
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if (HAS_PCH_LPT(dev_priv))
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max_clock = 180000;
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else if (IS_VALLEYVIEW(dev_priv))
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/*
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* 270 MHz due to current DPLL limits,
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* DAC limit supposedly 355 MHz.
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*/
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max_clock = 270000;
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else if (IS_GEN3(dev_priv) || IS_GEN4(dev_priv))
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max_clock = 400000;
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else
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max_clock = 350000;
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if (mode->clock > max_clock)
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return MODE_CLOCK_HIGH;
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if (mode->clock > max_dotclk)
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return MODE_CLOCK_HIGH;
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/* The FDI receiver on LPT only supports 8bpc and only has 2 lanes. */
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if (HAS_PCH_LPT(dev_priv) &&
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(ironlake_get_lanes_required(mode->clock, 270000, 24) > 2))
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return MODE_CLOCK_HIGH;
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return MODE_OK;
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}
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static bool intel_crt_compute_config(struct intel_encoder *encoder,
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struct intel_crtc_state *pipe_config,
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struct drm_connector_state *conn_state)
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{
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struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
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if (HAS_PCH_SPLIT(dev_priv))
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pipe_config->has_pch_encoder = true;
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/* LPT FDI RX only supports 8bpc. */
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if (HAS_PCH_LPT(dev_priv)) {
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if (pipe_config->bw_constrained && pipe_config->pipe_bpp < 24) {
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DRM_DEBUG_KMS("LPT only supports 24bpp\n");
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return false;
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}
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pipe_config->pipe_bpp = 24;
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}
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/* FDI must always be 2.7 GHz */
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if (HAS_DDI(dev_priv))
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pipe_config->port_clock = 135000 * 2;
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return true;
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}
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static bool intel_ironlake_crt_detect_hotplug(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct intel_crt *crt = intel_attached_crt(connector);
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struct drm_i915_private *dev_priv = to_i915(dev);
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u32 adpa;
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bool ret;
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/* The first time through, trigger an explicit detection cycle */
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if (crt->force_hotplug_required) {
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bool turn_off_dac = HAS_PCH_SPLIT(dev_priv);
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u32 save_adpa;
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crt->force_hotplug_required = 0;
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save_adpa = adpa = I915_READ(crt->adpa_reg);
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DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
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adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
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if (turn_off_dac)
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adpa &= ~ADPA_DAC_ENABLE;
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I915_WRITE(crt->adpa_reg, adpa);
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if (intel_wait_for_register(dev_priv,
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crt->adpa_reg,
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ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 0,
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1000))
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DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
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if (turn_off_dac) {
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I915_WRITE(crt->adpa_reg, save_adpa);
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POSTING_READ(crt->adpa_reg);
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}
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}
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/* Check the status to see if both blue and green are on now */
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adpa = I915_READ(crt->adpa_reg);
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if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
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ret = true;
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else
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ret = false;
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DRM_DEBUG_KMS("ironlake hotplug adpa=0x%x, result %d\n", adpa, ret);
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return ret;
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}
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static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct intel_crt *crt = intel_attached_crt(connector);
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struct drm_i915_private *dev_priv = to_i915(dev);
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bool reenable_hpd;
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u32 adpa;
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bool ret;
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u32 save_adpa;
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/*
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* Doing a force trigger causes a hpd interrupt to get sent, which can
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* get us stuck in a loop if we're polling:
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* - We enable power wells and reset the ADPA
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* - output_poll_exec does force probe on VGA, triggering a hpd
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* - HPD handler waits for poll to unlock dev->mode_config.mutex
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* - output_poll_exec shuts off the ADPA, unlocks
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* dev->mode_config.mutex
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* - HPD handler runs, resets ADPA and brings us back to the start
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*
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* Just disable HPD interrupts here to prevent this
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*/
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reenable_hpd = intel_hpd_disable(dev_priv, crt->base.hpd_pin);
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save_adpa = adpa = I915_READ(crt->adpa_reg);
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DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
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adpa |= ADPA_CRT_HOTPLUG_FORCE_TRIGGER;
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I915_WRITE(crt->adpa_reg, adpa);
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if (intel_wait_for_register(dev_priv,
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crt->adpa_reg,
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ADPA_CRT_HOTPLUG_FORCE_TRIGGER, 0,
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1000)) {
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DRM_DEBUG_KMS("timed out waiting for FORCE_TRIGGER");
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I915_WRITE(crt->adpa_reg, save_adpa);
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}
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/* Check the status to see if both blue and green are on now */
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adpa = I915_READ(crt->adpa_reg);
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if ((adpa & ADPA_CRT_HOTPLUG_MONITOR_MASK) != 0)
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ret = true;
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else
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ret = false;
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DRM_DEBUG_KMS("valleyview hotplug adpa=0x%x, result %d\n", adpa, ret);
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if (reenable_hpd)
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intel_hpd_enable(dev_priv, crt->base.hpd_pin);
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return ret;
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}
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/**
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* Uses CRT_HOTPLUG_EN and CRT_HOTPLUG_STAT to detect CRT presence.
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*
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* Not for i915G/i915GM
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*
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* \return true if CRT is connected.
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* \return false if CRT is disconnected.
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*/
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static bool intel_crt_detect_hotplug(struct drm_connector *connector)
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{
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struct drm_device *dev = connector->dev;
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struct drm_i915_private *dev_priv = to_i915(dev);
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u32 stat;
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bool ret = false;
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int i, tries = 0;
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if (HAS_PCH_SPLIT(dev_priv))
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return intel_ironlake_crt_detect_hotplug(connector);
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if (IS_VALLEYVIEW(dev_priv))
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return valleyview_crt_detect_hotplug(connector);
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/*
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* On 4 series desktop, CRT detect sequence need to be done twice
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* to get a reliable result.
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*/
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if (IS_G4X(dev_priv) && !IS_GM45(dev_priv))
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tries = 2;
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else
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tries = 1;
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for (i = 0; i < tries ; i++) {
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/* turn on the FORCE_DETECT */
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i915_hotplug_interrupt_update(dev_priv,
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CRT_HOTPLUG_FORCE_DETECT,
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CRT_HOTPLUG_FORCE_DETECT);
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/* wait for FORCE_DETECT to go off */
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if (intel_wait_for_register(dev_priv, PORT_HOTPLUG_EN,
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CRT_HOTPLUG_FORCE_DETECT, 0,
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1000))
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DRM_DEBUG_KMS("timed out waiting for FORCE_DETECT to go off");
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}
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stat = I915_READ(PORT_HOTPLUG_STAT);
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if ((stat & CRT_HOTPLUG_MONITOR_MASK) != CRT_HOTPLUG_MONITOR_NONE)
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ret = true;
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/* clear the interrupt we just generated, if any */
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I915_WRITE(PORT_HOTPLUG_STAT, CRT_HOTPLUG_INT_STATUS);
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|
|
i915_hotplug_interrupt_update(dev_priv, CRT_HOTPLUG_FORCE_DETECT, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct edid *intel_crt_get_edid(struct drm_connector *connector,
|
|
struct i2c_adapter *i2c)
|
|
{
|
|
struct edid *edid;
|
|
|
|
edid = drm_get_edid(connector, i2c);
|
|
|
|
if (!edid && !intel_gmbus_is_forced_bit(i2c)) {
|
|
DRM_DEBUG_KMS("CRT GMBUS EDID read failed, retry using GPIO bit-banging\n");
|
|
intel_gmbus_force_bit(i2c, true);
|
|
edid = drm_get_edid(connector, i2c);
|
|
intel_gmbus_force_bit(i2c, false);
|
|
}
|
|
|
|
return edid;
|
|
}
|
|
|
|
/* local version of intel_ddc_get_modes() to use intel_crt_get_edid() */
|
|
static int intel_crt_ddc_get_modes(struct drm_connector *connector,
|
|
struct i2c_adapter *adapter)
|
|
{
|
|
struct edid *edid;
|
|
int ret;
|
|
|
|
edid = intel_crt_get_edid(connector, adapter);
|
|
if (!edid)
|
|
return 0;
|
|
|
|
ret = intel_connector_update_modes(connector, edid);
|
|
kfree(edid);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static bool intel_crt_detect_ddc(struct drm_connector *connector)
|
|
{
|
|
struct intel_crt *crt = intel_attached_crt(connector);
|
|
struct drm_i915_private *dev_priv = to_i915(crt->base.base.dev);
|
|
struct edid *edid;
|
|
struct i2c_adapter *i2c;
|
|
bool ret = false;
|
|
|
|
BUG_ON(crt->base.type != INTEL_OUTPUT_ANALOG);
|
|
|
|
i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
|
|
edid = intel_crt_get_edid(connector, i2c);
|
|
|
|
if (edid) {
|
|
bool is_digital = edid->input & DRM_EDID_INPUT_DIGITAL;
|
|
|
|
/*
|
|
* This may be a DVI-I connector with a shared DDC
|
|
* link between analog and digital outputs, so we
|
|
* have to check the EDID input spec of the attached device.
|
|
*/
|
|
if (!is_digital) {
|
|
DRM_DEBUG_KMS("CRT detected via DDC:0x50 [EDID]\n");
|
|
ret = true;
|
|
} else {
|
|
DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [EDID reports a digital panel]\n");
|
|
}
|
|
} else {
|
|
DRM_DEBUG_KMS("CRT not detected via DDC:0x50 [no valid EDID found]\n");
|
|
}
|
|
|
|
kfree(edid);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static enum drm_connector_status
|
|
intel_crt_load_detect(struct intel_crt *crt, uint32_t pipe)
|
|
{
|
|
struct drm_device *dev = crt->base.base.dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
uint32_t save_bclrpat;
|
|
uint32_t save_vtotal;
|
|
uint32_t vtotal, vactive;
|
|
uint32_t vsample;
|
|
uint32_t vblank, vblank_start, vblank_end;
|
|
uint32_t dsl;
|
|
i915_reg_t bclrpat_reg, vtotal_reg,
|
|
vblank_reg, vsync_reg, pipeconf_reg, pipe_dsl_reg;
|
|
uint8_t st00;
|
|
enum drm_connector_status status;
|
|
|
|
DRM_DEBUG_KMS("starting load-detect on CRT\n");
|
|
|
|
bclrpat_reg = BCLRPAT(pipe);
|
|
vtotal_reg = VTOTAL(pipe);
|
|
vblank_reg = VBLANK(pipe);
|
|
vsync_reg = VSYNC(pipe);
|
|
pipeconf_reg = PIPECONF(pipe);
|
|
pipe_dsl_reg = PIPEDSL(pipe);
|
|
|
|
save_bclrpat = I915_READ(bclrpat_reg);
|
|
save_vtotal = I915_READ(vtotal_reg);
|
|
vblank = I915_READ(vblank_reg);
|
|
|
|
vtotal = ((save_vtotal >> 16) & 0xfff) + 1;
|
|
vactive = (save_vtotal & 0x7ff) + 1;
|
|
|
|
vblank_start = (vblank & 0xfff) + 1;
|
|
vblank_end = ((vblank >> 16) & 0xfff) + 1;
|
|
|
|
/* Set the border color to purple. */
|
|
I915_WRITE(bclrpat_reg, 0x500050);
|
|
|
|
if (!IS_GEN2(dev_priv)) {
|
|
uint32_t pipeconf = I915_READ(pipeconf_reg);
|
|
I915_WRITE(pipeconf_reg, pipeconf | PIPECONF_FORCE_BORDER);
|
|
POSTING_READ(pipeconf_reg);
|
|
/* Wait for next Vblank to substitue
|
|
* border color for Color info */
|
|
intel_wait_for_vblank(dev_priv, pipe);
|
|
st00 = I915_READ8(_VGA_MSR_WRITE);
|
|
status = ((st00 & (1 << 4)) != 0) ?
|
|
connector_status_connected :
|
|
connector_status_disconnected;
|
|
|
|
I915_WRITE(pipeconf_reg, pipeconf);
|
|
} else {
|
|
bool restore_vblank = false;
|
|
int count, detect;
|
|
|
|
/*
|
|
* If there isn't any border, add some.
|
|
* Yes, this will flicker
|
|
*/
|
|
if (vblank_start <= vactive && vblank_end >= vtotal) {
|
|
uint32_t vsync = I915_READ(vsync_reg);
|
|
uint32_t vsync_start = (vsync & 0xffff) + 1;
|
|
|
|
vblank_start = vsync_start;
|
|
I915_WRITE(vblank_reg,
|
|
(vblank_start - 1) |
|
|
((vblank_end - 1) << 16));
|
|
restore_vblank = true;
|
|
}
|
|
/* sample in the vertical border, selecting the larger one */
|
|
if (vblank_start - vactive >= vtotal - vblank_end)
|
|
vsample = (vblank_start + vactive) >> 1;
|
|
else
|
|
vsample = (vtotal + vblank_end) >> 1;
|
|
|
|
/*
|
|
* Wait for the border to be displayed
|
|
*/
|
|
while (I915_READ(pipe_dsl_reg) >= vactive)
|
|
;
|
|
while ((dsl = I915_READ(pipe_dsl_reg)) <= vsample)
|
|
;
|
|
/*
|
|
* Watch ST00 for an entire scanline
|
|
*/
|
|
detect = 0;
|
|
count = 0;
|
|
do {
|
|
count++;
|
|
/* Read the ST00 VGA status register */
|
|
st00 = I915_READ8(_VGA_MSR_WRITE);
|
|
if (st00 & (1 << 4))
|
|
detect++;
|
|
} while ((I915_READ(pipe_dsl_reg) == dsl));
|
|
|
|
/* restore vblank if necessary */
|
|
if (restore_vblank)
|
|
I915_WRITE(vblank_reg, vblank);
|
|
/*
|
|
* If more than 3/4 of the scanline detected a monitor,
|
|
* then it is assumed to be present. This works even on i830,
|
|
* where there isn't any way to force the border color across
|
|
* the screen
|
|
*/
|
|
status = detect * 4 > count * 3 ?
|
|
connector_status_connected :
|
|
connector_status_disconnected;
|
|
}
|
|
|
|
/* Restore previous settings */
|
|
I915_WRITE(bclrpat_reg, save_bclrpat);
|
|
|
|
return status;
|
|
}
|
|
|
|
static int intel_spurious_crt_detect_dmi_callback(const struct dmi_system_id *id)
|
|
{
|
|
DRM_DEBUG_DRIVER("Skipping CRT detection for %s\n", id->ident);
|
|
return 1;
|
|
}
|
|
|
|
static const struct dmi_system_id intel_spurious_crt_detect[] = {
|
|
{
|
|
.callback = intel_spurious_crt_detect_dmi_callback,
|
|
.ident = "ACER ZGB",
|
|
.matches = {
|
|
DMI_MATCH(DMI_SYS_VENDOR, "ACER"),
|
|
DMI_MATCH(DMI_PRODUCT_NAME, "ZGB"),
|
|
},
|
|
},
|
|
{
|
|
.callback = intel_spurious_crt_detect_dmi_callback,
|
|
.ident = "Intel DZ77BH-55K",
|
|
.matches = {
|
|
DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
|
|
DMI_MATCH(DMI_BOARD_NAME, "DZ77BH-55K"),
|
|
},
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static int
|
|
intel_crt_detect(struct drm_connector *connector,
|
|
struct drm_modeset_acquire_ctx *ctx,
|
|
bool force)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(connector->dev);
|
|
struct intel_crt *crt = intel_attached_crt(connector);
|
|
struct intel_encoder *intel_encoder = &crt->base;
|
|
int status, ret;
|
|
struct intel_load_detect_pipe tmp;
|
|
|
|
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] force=%d\n",
|
|
connector->base.id, connector->name,
|
|
force);
|
|
|
|
/* Skip machines without VGA that falsely report hotplug events */
|
|
if (dmi_check_system(intel_spurious_crt_detect))
|
|
return connector_status_disconnected;
|
|
|
|
intel_display_power_get(dev_priv, intel_encoder->power_domain);
|
|
|
|
if (I915_HAS_HOTPLUG(dev_priv)) {
|
|
/* We can not rely on the HPD pin always being correctly wired
|
|
* up, for example many KVM do not pass it through, and so
|
|
* only trust an assertion that the monitor is connected.
|
|
*/
|
|
if (intel_crt_detect_hotplug(connector)) {
|
|
DRM_DEBUG_KMS("CRT detected via hotplug\n");
|
|
status = connector_status_connected;
|
|
goto out;
|
|
} else
|
|
DRM_DEBUG_KMS("CRT not detected via hotplug\n");
|
|
}
|
|
|
|
if (intel_crt_detect_ddc(connector)) {
|
|
status = connector_status_connected;
|
|
goto out;
|
|
}
|
|
|
|
/* Load detection is broken on HPD capable machines. Whoever wants a
|
|
* broken monitor (without edid) to work behind a broken kvm (that fails
|
|
* to have the right resistors for HP detection) needs to fix this up.
|
|
* For now just bail out. */
|
|
if (I915_HAS_HOTPLUG(dev_priv) && !i915.load_detect_test) {
|
|
status = connector_status_disconnected;
|
|
goto out;
|
|
}
|
|
|
|
if (!force) {
|
|
status = connector->status;
|
|
goto out;
|
|
}
|
|
|
|
/* for pre-945g platforms use load detect */
|
|
ret = intel_get_load_detect_pipe(connector, NULL, &tmp, ctx);
|
|
if (ret > 0) {
|
|
if (intel_crt_detect_ddc(connector))
|
|
status = connector_status_connected;
|
|
else if (INTEL_GEN(dev_priv) < 4)
|
|
status = intel_crt_load_detect(crt,
|
|
to_intel_crtc(connector->state->crtc)->pipe);
|
|
else if (i915.load_detect_test)
|
|
status = connector_status_disconnected;
|
|
else
|
|
status = connector_status_unknown;
|
|
intel_release_load_detect_pipe(connector, &tmp, ctx);
|
|
} else if (ret == 0)
|
|
status = connector_status_unknown;
|
|
else if (ret < 0)
|
|
status = ret;
|
|
|
|
out:
|
|
intel_display_power_put(dev_priv, intel_encoder->power_domain);
|
|
return status;
|
|
}
|
|
|
|
static void intel_crt_destroy(struct drm_connector *connector)
|
|
{
|
|
drm_connector_cleanup(connector);
|
|
kfree(connector);
|
|
}
|
|
|
|
static int intel_crt_get_modes(struct drm_connector *connector)
|
|
{
|
|
struct drm_device *dev = connector->dev;
|
|
struct drm_i915_private *dev_priv = to_i915(dev);
|
|
struct intel_crt *crt = intel_attached_crt(connector);
|
|
struct intel_encoder *intel_encoder = &crt->base;
|
|
int ret;
|
|
struct i2c_adapter *i2c;
|
|
|
|
intel_display_power_get(dev_priv, intel_encoder->power_domain);
|
|
|
|
i2c = intel_gmbus_get_adapter(dev_priv, dev_priv->vbt.crt_ddc_pin);
|
|
ret = intel_crt_ddc_get_modes(connector, i2c);
|
|
if (ret || !IS_G4X(dev_priv))
|
|
goto out;
|
|
|
|
/* Try to probe digital port for output in DVI-I -> VGA mode. */
|
|
i2c = intel_gmbus_get_adapter(dev_priv, GMBUS_PIN_DPB);
|
|
ret = intel_crt_ddc_get_modes(connector, i2c);
|
|
|
|
out:
|
|
intel_display_power_put(dev_priv, intel_encoder->power_domain);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int intel_crt_set_property(struct drm_connector *connector,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
void intel_crt_reset(struct drm_encoder *encoder)
|
|
{
|
|
struct drm_i915_private *dev_priv = to_i915(encoder->dev);
|
|
struct intel_crt *crt = intel_encoder_to_crt(to_intel_encoder(encoder));
|
|
|
|
if (INTEL_GEN(dev_priv) >= 5) {
|
|
u32 adpa;
|
|
|
|
adpa = I915_READ(crt->adpa_reg);
|
|
adpa &= ~ADPA_CRT_HOTPLUG_MASK;
|
|
adpa |= ADPA_HOTPLUG_BITS;
|
|
I915_WRITE(crt->adpa_reg, adpa);
|
|
POSTING_READ(crt->adpa_reg);
|
|
|
|
DRM_DEBUG_KMS("crt adpa set to 0x%x\n", adpa);
|
|
crt->force_hotplug_required = 1;
|
|
}
|
|
|
|
}
|
|
|
|
/*
|
|
* Routines for controlling stuff on the analog port
|
|
*/
|
|
|
|
static const struct drm_connector_funcs intel_crt_connector_funcs = {
|
|
.dpms = drm_atomic_helper_connector_dpms,
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
|
.late_register = intel_connector_register,
|
|
.early_unregister = intel_connector_unregister,
|
|
.destroy = intel_crt_destroy,
|
|
.set_property = intel_crt_set_property,
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
|
.atomic_get_property = intel_connector_atomic_get_property,
|
|
};
|
|
|
|
static const struct drm_connector_helper_funcs intel_crt_connector_helper_funcs = {
|
|
.detect_ctx = intel_crt_detect,
|
|
.mode_valid = intel_crt_mode_valid,
|
|
.get_modes = intel_crt_get_modes,
|
|
};
|
|
|
|
static const struct drm_encoder_funcs intel_crt_enc_funcs = {
|
|
.reset = intel_crt_reset,
|
|
.destroy = intel_encoder_destroy,
|
|
};
|
|
|
|
void intel_crt_init(struct drm_i915_private *dev_priv)
|
|
{
|
|
struct drm_connector *connector;
|
|
struct intel_crt *crt;
|
|
struct intel_connector *intel_connector;
|
|
i915_reg_t adpa_reg;
|
|
u32 adpa;
|
|
|
|
if (HAS_PCH_SPLIT(dev_priv))
|
|
adpa_reg = PCH_ADPA;
|
|
else if (IS_VALLEYVIEW(dev_priv))
|
|
adpa_reg = VLV_ADPA;
|
|
else
|
|
adpa_reg = ADPA;
|
|
|
|
adpa = I915_READ(adpa_reg);
|
|
if ((adpa & ADPA_DAC_ENABLE) == 0) {
|
|
/*
|
|
* On some machines (some IVB at least) CRT can be
|
|
* fused off, but there's no known fuse bit to
|
|
* indicate that. On these machine the ADPA register
|
|
* works normally, except the DAC enable bit won't
|
|
* take. So the only way to tell is attempt to enable
|
|
* it and see what happens.
|
|
*/
|
|
I915_WRITE(adpa_reg, adpa | ADPA_DAC_ENABLE |
|
|
ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE);
|
|
if ((I915_READ(adpa_reg) & ADPA_DAC_ENABLE) == 0)
|
|
return;
|
|
I915_WRITE(adpa_reg, adpa);
|
|
}
|
|
|
|
crt = kzalloc(sizeof(struct intel_crt), GFP_KERNEL);
|
|
if (!crt)
|
|
return;
|
|
|
|
intel_connector = intel_connector_alloc();
|
|
if (!intel_connector) {
|
|
kfree(crt);
|
|
return;
|
|
}
|
|
|
|
connector = &intel_connector->base;
|
|
crt->connector = intel_connector;
|
|
drm_connector_init(&dev_priv->drm, &intel_connector->base,
|
|
&intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA);
|
|
|
|
drm_encoder_init(&dev_priv->drm, &crt->base.base, &intel_crt_enc_funcs,
|
|
DRM_MODE_ENCODER_DAC, "CRT");
|
|
|
|
intel_connector_attach_encoder(intel_connector, &crt->base);
|
|
|
|
crt->base.type = INTEL_OUTPUT_ANALOG;
|
|
crt->base.cloneable = (1 << INTEL_OUTPUT_DVO) | (1 << INTEL_OUTPUT_HDMI);
|
|
if (IS_I830(dev_priv))
|
|
crt->base.crtc_mask = (1 << 0);
|
|
else
|
|
crt->base.crtc_mask = (1 << 0) | (1 << 1) | (1 << 2);
|
|
|
|
if (IS_GEN2(dev_priv))
|
|
connector->interlace_allowed = 0;
|
|
else
|
|
connector->interlace_allowed = 1;
|
|
connector->doublescan_allowed = 0;
|
|
|
|
crt->adpa_reg = adpa_reg;
|
|
|
|
crt->base.power_domain = POWER_DOMAIN_PORT_CRT;
|
|
|
|
crt->base.compute_config = intel_crt_compute_config;
|
|
if (HAS_PCH_SPLIT(dev_priv)) {
|
|
crt->base.disable = pch_disable_crt;
|
|
crt->base.post_disable = pch_post_disable_crt;
|
|
} else {
|
|
crt->base.disable = intel_disable_crt;
|
|
}
|
|
crt->base.enable = intel_enable_crt;
|
|
if (I915_HAS_HOTPLUG(dev_priv) &&
|
|
!dmi_check_system(intel_spurious_crt_detect))
|
|
crt->base.hpd_pin = HPD_CRT;
|
|
if (HAS_DDI(dev_priv)) {
|
|
crt->base.port = PORT_E;
|
|
crt->base.get_config = hsw_crt_get_config;
|
|
crt->base.get_hw_state = intel_ddi_get_hw_state;
|
|
crt->base.post_disable = hsw_post_disable_crt;
|
|
} else {
|
|
crt->base.port = PORT_NONE;
|
|
crt->base.get_config = intel_crt_get_config;
|
|
crt->base.get_hw_state = intel_crt_get_hw_state;
|
|
}
|
|
intel_connector->get_hw_state = intel_connector_get_hw_state;
|
|
|
|
drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs);
|
|
|
|
if (!I915_HAS_HOTPLUG(dev_priv))
|
|
intel_connector->polled = DRM_CONNECTOR_POLL_CONNECT;
|
|
|
|
/*
|
|
* Configure the automatic hotplug detection stuff
|
|
*/
|
|
crt->force_hotplug_required = 0;
|
|
|
|
/*
|
|
* TODO: find a proper way to discover whether we need to set the the
|
|
* polarity and link reversal bits or not, instead of relying on the
|
|
* BIOS.
|
|
*/
|
|
if (HAS_PCH_LPT(dev_priv)) {
|
|
u32 fdi_config = FDI_RX_POLARITY_REVERSED_LPT |
|
|
FDI_RX_LINK_REVERSAL_OVERRIDE;
|
|
|
|
dev_priv->fdi_rx_config = I915_READ(FDI_RX_CTL(PIPE_A)) & fdi_config;
|
|
}
|
|
|
|
intel_crt_reset(&crt->base.base);
|
|
}
|