mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-08-31 03:35:32 -04:00
Code Issues Packages Projects Releases Wiki Activity

drm/amd/display: use DisplayID panel type in dm_set_panel_type

Browse Source 
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>
This commit is contained in:
Chenyu Chen
2026-05-26 09:53:15 +08:00
committed by Alex Deucher
parent e239d3e3cb
commit 168f51adec
1 changed files with 11 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c
View File

@@ -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,