BOE 2270 panel failed to control backlight brightness. Add it in edid quirks to force using DPCD backlight control. Then the brightness can be controlled.
Signed-off-by: Aaron Ma aaron.ma@canonical.com --- drivers/gpu/drm/drm_dp_helper.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 092c8c985911..417ed10bbf83 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -1324,6 +1324,7 @@ static const struct edid_quirk edid_quirk_list[] = { { MFG(0x4d, 0x10), PROD_ID(0xc7, 0x14), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, { MFG(0x4d, 0x10), PROD_ID(0xe6, 0x14), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, { MFG(0x4c, 0x83), PROD_ID(0x47, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, + { MFG(0x09, 0xe5), PROD_ID(0xde, 0x08), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, };
#undef MFG