diff options
| author | Ivan Lipski <ivlipski@amd.com> | 2023-12-01 16:25:16 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-12-06 23:22:34 +0300 |
| commit | 21afc872fbc29cd68cfde816d1df4d55848c3f61 (patch) | |
| tree | aba3c98b0bc9b38bd526e0f3b867480a47464065 | |
| parent | 2ce156482a6fef349d2eba98e5070c412d3af662 (diff) | |
| download | linux-21afc872fbc29cd68cfde816d1df4d55848c3f61.tar.xz | |
drm/amd/display: Add monitor patch for specific eDP
[WHY]
Some eDP panels's ext caps don't write initial value cause the value of
dpcd_addr(0x317) is random. It means that sometimes the eDP will
clarify it is OLED, miniLED...etc cause the backlight control interface
is incorrect.
[HOW]
Add a new panel patch to remove sink ext caps(HDR,OLED...etc)
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Sun peng Li <sunpeng.li@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.siqueira@amd.com>
Signed-off-by: Ivan Lipski <ivlipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c index b4696ec621c4..eaf8d9f48244 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c @@ -64,6 +64,12 @@ static void apply_edid_quirks(struct edid *edid, struct dc_edid_caps *edid_caps) DRM_DEBUG_DRIVER("Disabling FAMS on monitor with panel id %X\n", panel_id); edid_caps->panel_patch.disable_fams = true; break; + /* Workaround for some monitors that do not clear DPCD 0x317 if FreeSync is unsupported */ + case drm_edid_encode_panel_id('A', 'U', 'O', 0xA7AB): + case drm_edid_encode_panel_id('A', 'U', 'O', 0xE69B): + DRM_DEBUG_DRIVER("Clearing DPCD 0x317 on monitor with panel id %X\n", panel_id); + edid_caps->panel_patch.remove_sink_ext_caps = true; + break; default: return; } |