Commit f7033fab authored by Antheas Kapenekakis's avatar Antheas Kapenekakis Committed by Mario Limonciello (AMD)
Browse files

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: default avatarPhilip Müller <philm@manjaro.org>
Reviewed-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarAntheas Kapenekakis <lkml@antheas.dev>
Link: https://lore.kernel.org/r/20250829145541.512671-4-lkml@antheas.dev


Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarMario Limonciello (AMD) <superm1@kernel.org>
parent 6eee1ef9

drivers/gpu/drm/drm_panel_backlight_quirks.c

+14 −5
Original line number Diff line number Diff line
@@ -8,11 +8,14 @@ 
#include <drm/drm_edid.h>

#include <drm/drm_utils.h>



struct drm_get_panel_backlight_quirk {

	struct {

struct drm_panel_match {

	enum dmi_field field;

	const char * const value;

	} dmi_match;

};



struct drm_get_panel_backlight_quirk {

	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))