Re: [PATCH 1/3] drm/i915: Extract intel_dp_output_format()

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> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Ville
> Syrjala
> Sent: Friday, September 18, 2020 3:14 AM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject:  [PATCH 1/3] drm/i915: Extract intel_dp_output_format()
> 
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> 
> Refactor the output_format calculation into a helper so that we can reuse it
> for mode validation as well.
> 
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Looks good to me.
Reviewed-by: Vandita Kulkarni <vandita.kulkarni@xxxxxxxxx>

Thanks,
Vandita
> ---
>  drivers/gpu/drm/i915/display/intel_dp.c | 32 +++++++++++++++----------
>  1 file changed, 20 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index bf1e9cf1c0f3..ad9b8b16fadb 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -592,6 +592,22 @@ static u8 intel_dp_dsc_get_slice_count(struct
> intel_dp *intel_dp,
>  	return 0;
>  }
> 
> +static enum intel_output_format
> +intel_dp_output_format(struct drm_connector *connector,
> +		       const struct drm_display_mode *mode) {
> +	struct intel_dp *intel_dp =
> intel_attached_dp(to_intel_connector(connector));
> +	const struct drm_display_info *info = &connector->display_info;
> +
> +	if (!drm_mode_is_420_only(info, mode))
> +		return INTEL_OUTPUT_FORMAT_RGB;
> +
> +	if (intel_dp->dfp.ycbcr_444_to_420)
> +		return INTEL_OUTPUT_FORMAT_YCBCR444;
> +	else
> +		return INTEL_OUTPUT_FORMAT_YCBCR420;
> +}
> +
>  static bool intel_dp_hdisplay_bad(struct drm_i915_private *dev_priv,
>  				  int hdisplay)
>  {
> @@ -2430,27 +2446,20 @@ intel_dp_compute_link_config(struct
> intel_encoder *encoder,  }
> 
>  static int
> -intel_dp_ycbcr420_config(struct intel_dp *intel_dp,
> -			 struct intel_crtc_state *crtc_state,
> +intel_dp_ycbcr420_config(struct intel_crtc_state *crtc_state,
>  			 const struct drm_connector_state *conn_state)  {
>  	struct drm_connector *connector = conn_state->connector;
> -	const struct drm_display_info *info = &connector->display_info;
>  	const struct drm_display_mode *adjusted_mode =
>  		&crtc_state->hw.adjusted_mode;
> 
>  	if (!connector->ycbcr_420_allowed)
>  		return 0;
> 
> -	if (!drm_mode_is_420_only(info, adjusted_mode))
> -		return 0;
> +	crtc_state->output_format = intel_dp_output_format(connector,
> +adjusted_mode);
> 
> -	if (intel_dp->dfp.ycbcr_444_to_420) {
> -		crtc_state->output_format =
> INTEL_OUTPUT_FORMAT_YCBCR444;
> +	if (crtc_state->output_format !=
> INTEL_OUTPUT_FORMAT_YCBCR420)
>  		return 0;
> -	}
> -
> -	crtc_state->output_format = INTEL_OUTPUT_FORMAT_YCBCR420;
> 
>  	return intel_pch_panel_fitting(crtc_state, conn_state);  } @@ -
> 2710,8 +2719,7 @@ intel_dp_compute_config(struct intel_encoder
> *encoder,
>  	if (lspcon->active)
>  		lspcon_ycbcr420_config(&intel_connector->base,
> pipe_config);
>  	else
> -		ret = intel_dp_ycbcr420_config(intel_dp, pipe_config,
> -					       conn_state);
> +		ret = intel_dp_ycbcr420_config(pipe_config, conn_state);
>  	if (ret)
>  		return ret;
> 
> --
> 2.26.2
> 
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