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| author | Chenyu Chen <chen-yu.chen@amd.com> | 2026-05-26 09:53:15 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-06-17 16:22:20 -0400 |
| commit | 168f51adecd7c71e59a50ebcd0d24b010f981746 (patch) | |
| tree | b8f9d8b504f7206cb5c72990baab6bd59111d580 /drivers/gpu/drm/amd/display | |
| parent | e239d3e3cbb7b27522727371fa66523fc769f454 (diff) | |
| download | linux-next-168f51adecd7c71e59a50ebcd0d24b010f981746.tar.gz linux-next-168f51adecd7c71e59a50ebcd0d24b010f981746.zip | |
drm/amd/display: use DisplayID panel type in dm_set_panel_type
Wire up the newly parsed panel_type from drm_display_info into
amdgpu_dm's panel type detection path. When neither the AMD VSDB
nor DPCD determines the panel type, fall back to the DisplayID
Display Device Technology field to set PANEL_TYPE_LCD or
PANEL_TYPE_OLED accordingly. Also expose LCD to userspace via
the panel_type connector property.
Assisted-by: Copilot:Claude-Opus-4.6
Signed-off-by: Chenyu Chen <chen-yu.chen@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c index 27f8fb2e8c12..300ee26f26ff 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c @@ -420,11 +420,13 @@ static void dm_set_panel_type(struct amdgpu_dm_connector *aconnector) link->panel_type = PANEL_TYPE_OLED; } - /* - * TODO: get panel type from DID2 that has device technology field - * to specify if it's OLED or not. But we need to wait for DID2 - * support in DC and EDID parser to be able to use it here. - */ + /* If VSDB and DPCD didn't determine panel type, check DID */ + if (link->panel_type == PANEL_TYPE_NONE) { + if (display_info->panel_type == DRM_MODE_PANEL_TYPE_LCD) + link->panel_type = PANEL_TYPE_LCD; + else if (display_info->panel_type == DRM_MODE_PANEL_TYPE_OLED) + link->panel_type = PANEL_TYPE_OLED; + } if (link->panel_type == PANEL_TYPE_NONE) { struct drm_amd_vsdb_info *vsdb = &display_info->amd_vsdb; @@ -442,6 +444,10 @@ static void dm_set_panel_type(struct amdgpu_dm_connector *aconnector) drm_object_property_set_value(&connector->base, adev_to_drm(adev)->mode_config.panel_type_property, DRM_MODE_PANEL_TYPE_OLED); + else if (link->panel_type == PANEL_TYPE_LCD) + drm_object_property_set_value(&connector->base, + adev_to_drm(adev)->mode_config.panel_type_property, + DRM_MODE_PANEL_TYPE_LCD); else drm_object_property_set_value(&connector->base, adev_to_drm(adev)->mode_config.panel_type_property, |