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drm/amd/display: add functionality to grab DPRX CRC entries.

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[Why]
We need to compare DPRX CRCs with framebuffer CRCs for digital bypass mode.

[How]
Hook into DRM to grab DP receiver CRCs through drm_dp_start_crc.

Signed-off-by: Dingchen Zhang <dingchen.zhang@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dingchen Zhang
2019-05-15 17:15:05 -04:00
committed by Alex Deucher
parent 2425347697
commit 14b2584636
4 changed files with 136 additions and 44 deletions
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17
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -3665,7 +3665,7 @@ dm_crtc_duplicate_state(struct drm_crtc *crtc)
state->abm_level = cur->abm_level;
state->vrr_supported = cur->vrr_supported;
state->freesync_config = cur->freesync_config;
state->crc_enabled = cur->crc_enabled;
state->crc_src = cur->crc_src;
state->cm_has_degamma = cur->cm_has_degamma;
state->cm_is_degamma_srgb = cur->cm_is_degamma_srgb;
@@ -5975,6 +5975,7 @@ static void amdgpu_dm_enable_crtc_interrupts(struct drm_device *dev,
struct drm_crtc *crtc;
struct drm_crtc_state *old_crtc_state, *new_crtc_state;
int i;
enum amdgpu_dm_pipe_crc_source source;
for_each_oldnew_crtc_in_state(state, crtc, old_crtc_state,
new_crtc_state, i) {
@@ -6000,9 +6001,13 @@ static void amdgpu_dm_enable_crtc_interrupts(struct drm_device *dev,
#ifdef CONFIG_DEBUG_FS
/* The stream has changed so CRC capture needs to re-enabled. */
if (dm_new_crtc_state->crc_enabled) {
dm_new_crtc_state->crc_enabled = false;
amdgpu_dm_crtc_set_crc_source(crtc, "auto");
source = dm_new_crtc_state->crc_src;
if (amdgpu_dm_is_valid_crc_source(source)) {
dm_new_crtc_state->crc_src = AMDGPU_DM_PIPE_CRC_SOURCE_NONE;
if (source == AMDGPU_DM_PIPE_CRC_SOURCE_CRTC)
amdgpu_dm_crtc_set_crc_source(crtc, "crtc");
else if (source == AMDGPU_DM_PIPE_CRC_SOURCE_DPRX)
amdgpu_dm_crtc_set_crc_source(crtc, "dprx");
}
#endif
}
@@ -6058,7 +6063,7 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev,
* Drop the extra vblank reference added by CRC
* capture if applicable.
*/
if (dm_new_crtc_state->crc_enabled)
if (amdgpu_dm_is_valid_crc_source(dm_new_crtc_state->crc_src))
drm_crtc_vblank_put(crtc);
/*
@@ -6066,7 +6071,7 @@ static int amdgpu_dm_atomic_commit(struct drm_device *dev,
* still a stream for the CRTC.
*/
if (!dm_new_crtc_state->stream)
dm_new_crtc_state->crc_enabled = false;
dm_new_crtc_state->crc_src = AMDGPU_DM_PIPE_CRC_SOURCE_NONE;
manage_dm_interrupts(adev, acrtc, false);
}