Hi Greg: Could this patch get a chance to be applied on stable kernel? It only for 5.11- kernel, not for Linus' tree. Thanks, Aaron On 5/20/21 12:27 AM, Lyude Paul wrote:
Seems reasonable to me: Reviewed-by: Lyude Paul <lyude@xxxxxxxxxx> On Wed, 2021-05-19 at 17:53 +0800, Aaron Ma wrote:Another Samsung OLED panel needs DPCD to get control of backlight. Kernel 5.12+ support the backlight via: commit: <4a8d79901d5b> ("drm/i915/dp: Enable Intel's HDR backlight interface (only SDR for now)") Only make backlight work on lower versions of kernel. Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/3474 Cc: stable@xxxxxxxxxxxxxxx # 5.11- Signed-off-by: Aaron Ma <aaron.ma@xxxxxxxxxxxxx> --- 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 5bd0934004e3..7b91d8a76cd6 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -1960,6 +1960,7 @@ static const struct edid_quirk edid_quirk_list[] = { { 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) }, + { MFG(0x4c, 0x83), PROD_ID(0x57, 0x41), BIT(DP_QUIRK_FORCE_DPCD_BACKLIGHT) }, };#undef MFG
