On Wed, 27 Sep 2023, Vinod Govindapillai <[email protected]> wrote:
> Update the global dsc flag based on the display capabilities
> reported.
>
> Bspec: 71161
> Signed-off-by: Vinod Govindapillai <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_display_device.c | 7 +++++++
>  1 file changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_device.c 
> b/drivers/gpu/drm/i915/display/intel_display_device.c
> index a6a18eae7ae8..e51506e37384 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_device.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_device.c
> @@ -1065,6 +1065,13 @@ void intel_display_device_info_runtime_init(struct 
> drm_i915_private *i915)
>                       display_runtime->has_dsc = 0;
>       }
>  
> +     if (DISPLAY_VER(i915) >= 20) {
> +             u32 cap = intel_de_read(i915, XE2LPD_DE_CAP);
> +
> +             if (REG_FIELD_GET(XE2LPD_DE_CAP_DSC_MASK, cap) == 1)

Shouldn't the field values be defined too? Why the magic 1?

BR,
Jani.

> +                     display_runtime->has_dsc = 0;
> +     }
> +
>       return;
>  
>  display_fused_off:

-- 
Jani Nikula, Intel

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