[Intel-gfx] [PATCH 0/2] MTL Degamma implementation

[Nautiyal, Ankit K]

Thanks for the patches and the reviews, pushed to drm-intel-next.

Regards,

Ankit

On 7/27/2023 5:27 PM, Nautiyal, Ankit K wrote:
> LGTM.
>
> Acked-by: Ankit Nautiyal <ankit.k.nautiyal at intel.com>
>
> On 7/25/2023 2:00 PM, Chaitanya Kumar Borah wrote:
>> MTL onwards Degamma LUT/PRE-CSC LUT precision has been increased from
>> 16 bits to 24 bits. Currently, drm framework only supports LUTs up to 16
>> bit precision. Until a new uapi comes along to support higher bitdepth,
>> upscale the values sent from userland to 24 bit before writing into the
>> HW to continue supporting degamma on MTL.
>>
>> To avoid pipe config mismatch between 24 bit HW lut values and 16 bit
>> userspace sent values, convert back the 24 bit lut values read from HW
>> to 16 bit values.
>>
>> Chaitanya Kumar Borah (2):
>>    drm/i915/color: Upscale degamma values for MTL
>>    drm/i915/color: Downscale degamma lut values read from hardware
>>
>>   drivers/gpu/drm/i915/display/intel_color.c | 28 +++++++++++++++++++++-
>>   1 file changed, 27 insertions(+), 1 deletion(-)
>>