| Message ID | 20210630093721.10887-1-aaron.ma@canonical.com |
|---|---|
| State | New |
| Headers | show |
| Series | [RESEND] drm/i915: Force DPCD backlight mode for Samsung 16727 panel | expand |
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
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@vger.kernel.org # 5.11- Signed-off-by: Aaron Ma <aaron.ma@canonical.com> --- drivers/gpu/drm/drm_dp_helper.c | 1 + 1 file changed, 1 insertion(+)