On Wed, 2022-11-02 at 19:45 +0200, Jouni Högander wrote:
> Do not enable psr2 if panel ganularity is not aligned with DSC slice
> height when DSC is enabled
> 

Reviewed-by: José Roberto de Souza <[email protected]>

> Cc: José Roberto de Souza <[email protected]>
> Cc: Mika Kahola <[email protected]>
> 
> Signed-off-by: Jouni Högander <[email protected]>
> ---
>  drivers/gpu/drm/i915/display/intel_psr.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c 
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index e11b0592055f..57575b5c6d48 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -779,6 +779,7 @@ static bool psr2_granularity_check(struct intel_dp 
> *intel_dp,
>                                  struct intel_crtc_state *crtc_state)
>  {
>       struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
> +     const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
>       const int crtc_hdisplay = crtc_state->hw.adjusted_mode.crtc_hdisplay;
>       const int crtc_vdisplay = crtc_state->hw.adjusted_mode.crtc_vdisplay;
>       u16 y_granularity = 0;
> @@ -809,6 +810,10 @@ static bool psr2_granularity_check(struct intel_dp 
> *intel_dp,
>       if (y_granularity == 0 || crtc_vdisplay % y_granularity)
>               return false;
>  
> +     if (crtc_state->dsc.compression_enable &&
> +         vdsc_cfg->slice_height % y_granularity)
> +             return false;
> +
>       crtc_state->su_y_granularity = y_granularity;
>       return true;
>  }

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