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authorAntheas Kapenekakis <lkml@antheas.dev>2025-08-29 16:55:38 +0200
committerMario Limonciello (AMD) <superm1@kernel.org>2025-09-03 10:22:56 -0500
commitf7033fab81d82e9a56092bb412886df1d2591ae6 (patch)
tree2ef6c6af49f38b1878a1ab022c5b5f408fd4bded /drivers/gpu/drm/drm_panel_backlight_quirks.c
parent6eee1ef9e59853a49e926d116a004c53a9819dfd (diff)
drm: panel-backlight-quirks: Add secondary DMI match
Using a single DMI match only allows matching per manufacturer. Introduce a second optional match to allow matching make/model. In addition, make DMI optional to allow matching only by EDID. Tested-by: Philip Müller <philm@manjaro.org> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Antheas Kapenekakis <lkml@antheas.dev> Link: https://lore.kernel.org/r/20250829145541.512671-4-lkml@antheas.dev Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/drm_panel_backlight_quirks.c')
-rw-r--r--drivers/gpu/drm/drm_panel_backlight_quirks.c19
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/gpu/drm/drm_panel_backlight_quirks.c b/drivers/gpu/drm/drm_panel_backlight_quirks.c
index 702726c20ccc..3d386a96e50e 100644
--- a/drivers/gpu/drm/drm_panel_backlight_quirks.c
+++ b/drivers/gpu/drm/drm_panel_backlight_quirks.c
@@ -8,11 +8,14 @@
#include <drm/drm_edid.h>
#include <drm/drm_utils.h>
+struct drm_panel_match {
+ enum dmi_field field;
+ const char * const value;
+};
+
struct drm_get_panel_backlight_quirk {
- struct {
- enum dmi_field field;
- const char * const value;
- } dmi_match;
+ struct drm_panel_match dmi_match;
+ struct drm_panel_match dmi_match_other;
struct drm_edid_ident ident;
struct drm_panel_backlight_quirk quirk;
};
@@ -48,7 +51,13 @@ static bool drm_panel_min_backlight_quirk_matches(
const struct drm_get_panel_backlight_quirk *quirk,
const struct drm_edid *edid)
{
- if (!dmi_match(quirk->dmi_match.field, quirk->dmi_match.value))
+ if (quirk->dmi_match.field &&
+ !dmi_match(quirk->dmi_match.field, quirk->dmi_match.value))
+ return false;
+
+ if (quirk->dmi_match_other.field &&
+ !dmi_match(quirk->dmi_match_other.field,
+ quirk->dmi_match_other.value))
return false;
if (quirk->ident.panel_id && !drm_edid_match(edid, &quirk->ident))