Messages in this thread | | | From | Aaron Ma <> | Subject | Re: [PATCH] drm/i915: Force DPCD backlight mode for Samsung 16727 panel | Date | Wed, 30 Jun 2021 12:29:05 +0800 |
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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@redhat.com> > > 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@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(+) >> >> 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
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