diff options
| author | Aurabindo Pillai <aurabindo.pillai@amd.com> | 2025-02-24 14:24:45 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-03-05 10:46:44 -0500 |
| commit | 41b830476009f50233e8df538113765c0a59308d (patch) | |
| tree | d7748d44f1dfd67d2a6c15d475edea6384ee3953 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | |
| parent | drm/amdgpu: Update headers for CPER support on SRIOV (diff) | |
| download | linux-41b830476009f50233e8df538113765c0a59308d.tar.gz linux-41b830476009f50233e8df538113765c0a59308d.zip | |
drm/amd/display: Add workaround for a panel
Implement w/a for a panel which requires 10s delay after link detect.
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 10 |
1 files changed, 8 insertions, 2 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 fbd80d8545a8..253aac93e3d8 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 @@ -55,11 +55,16 @@ static u32 edid_extract_panel_id(struct edid *edid) (u32)EDID_PRODUCT_ID(edid); } -static void apply_edid_quirks(struct edid *edid, struct dc_edid_caps *edid_caps) +static void apply_edid_quirks(struct drm_device *dev, struct edid *edid, struct dc_edid_caps *edid_caps) { uint32_t panel_id = edid_extract_panel_id(edid); switch (panel_id) { + /* Workaround for monitors that need a delay after detecting the link */ + case drm_edid_encode_panel_id('G', 'B', 'T', 0x3215): + drm_dbg_driver(dev, "Add 10s delay for link detection for panel id %X\n", panel_id); + edid_caps->panel_patch.wait_after_dpcd_poweroff_ms = 10000; + break; /* Workaround for some monitors which does not work well with FAMS */ case drm_edid_encode_panel_id('S', 'A', 'M', 0x0E5E): case drm_edid_encode_panel_id('S', 'A', 'M', 0x7053): @@ -101,6 +106,7 @@ enum dc_edid_status dm_helpers_parse_edid_caps( { struct amdgpu_dm_connector *aconnector = link->priv; struct drm_connector *connector = &aconnector->base; + struct drm_device *dev = connector->dev; struct edid *edid_buf = edid ? (struct edid *) edid->raw_edid : NULL; struct cea_sad *sads; int sad_count = -1; @@ -130,7 +136,7 @@ enum dc_edid_status dm_helpers_parse_edid_caps( edid_caps->edid_hdmi = connector->display_info.is_hdmi; - apply_edid_quirks(edid_buf, edid_caps); + apply_edid_quirks(dev, edid_buf, edid_caps); sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads); if (sad_count <= 0) |