[Intel-gfx] [PATCH v10 3/8] drm/i915: Add CRTC output format YCBCR 4:4:4

[Ville Syrjälä]

On Tue, Aug 14, 2018 at 03:23:21PM +0530, Shashank Sharma wrote:
> This patch adds support for YCBCR 4:4:4 CRTC output format.
> To do this, this patch extends the existing YCBCR 4:2:0
> framework by:
> - Adding new parameter in for YCBCR 4:4:4 enum crtc_iutput_format.
> - Adding case for YCBCR 4:4:4 in while setting AVI infoframes.
> - Adding necessary checks in modeset sequence.
> 
> V3: Added this patch in the series
> V4: Added r-b from Maarten (for v3)
>     Addressed review comment from Ville:
>     Do not use (config->output_format > CRTC_OUTPUT_RGB)
> V5: Rebase
> V6: Rebase and small change, to accommodate changes in patch 2
> V7: Fixed checkpatch alignment warnings
> V8: Rebase
> V9: Rebase
> V10: Rebase
> 
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_color.c   |  3 ++-
>  drivers/gpu/drm/i915/intel_display.c | 13 +++++++++----
>  drivers/gpu/drm/i915/intel_drv.h     |  1 +
>  drivers/gpu/drm/i915/intel_hdmi.c    |  2 ++
>  4 files changed, 14 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
> index bf9d8f6..5127da2 100644
> --- a/drivers/gpu/drm/i915/intel_color.c
> +++ b/drivers/gpu/drm/i915/intel_color.c
> @@ -149,7 +149,8 @@ static void ilk_load_csc_matrix(struct drm_crtc_state *crtc_state)
>  	if (INTEL_GEN(dev_priv) >= 8 || IS_HASWELL(dev_priv))
>  		limited_color_range = intel_crtc_state->limited_color_range;
>  
> -	if (intel_crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
> +	if (intel_crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
> +	    intel_crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) {
>  		ilk_load_ycbcr_conversion_matrix(intel_crtc);
>  		return;
>  	} else if (crtc_state->ctm) {
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index e2a1e4f..3384129 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -6621,8 +6621,9 @@ static int intel_crtc_compute_config(struct intel_crtc *crtc,
>  		return -EINVAL;
>  	}
>  
> -	if (pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 &&
> -	    pipe_config->base.ctm) {
> +	if ((pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
> +	     pipe_config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) &&
> +	     pipe_config->base.ctm) {
>  		/*
>  		 * There is only one pipe CSC unit per pipe, and we need that
>  		 * for output conversion from RGB->YCBCR. So if CTM is already
> @@ -7842,6 +7843,8 @@ static void intel_get_crtc_ycbcr_config(struct intel_crtc *crtc,
>  					output = INTEL_OUTPUT_FORMAT_INVALID;
>  				else
>  					output = INTEL_OUTPUT_FORMAT_YCBCR420;
> +			} else {
> +				output = INTEL_OUTPUT_FORMAT_YCBCR444;
>  			}
>  		}
>  	}
> @@ -8484,11 +8487,13 @@ static void haswell_set_pipemisc(struct drm_crtc *crtc)
>  		if (intel_crtc->config->dither)
>  			val |= PIPEMISC_DITHER_ENABLE | PIPEMISC_DITHER_TYPE_SP;
>  
> -		if (config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) {
> +		if (config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420 ||
> +		    config->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
>  			val |= PIPEMISC_OUTPUT_COLORSPACE_YUV;
> +
> +		if (config->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
>  			val |= PIPEMISC_YUV420_ENABLE |
>  			       PIPEMISC_YUV420_MODE_FULL_BLEND;
> -		}
>  
>  		I915_WRITE(PIPEMISC(intel_crtc->pipe), val);
>  	}
> diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
> index cc7a46e..74ea4ac 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -712,6 +712,7 @@ enum intel_output_format {
>  	INTEL_OUTPUT_FORMAT_INVALID,
>  	INTEL_OUTPUT_FORMAT_RGB,
>  	INTEL_OUTPUT_FORMAT_YCBCR420,
> +	INTEL_OUTPUT_FORMAT_YCBCR444,
>  };

Missing output_format_str[INTEL_OUTPUT_FORMAT_YCBCR444].

With that fixed
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

>  
>  struct intel_crtc_state {
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
> index f1259a9..893d53d 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -488,6 +488,8 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
>  
>  	if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420)
>  		frame.avi.colorspace = HDMI_COLORSPACE_YUV420;
> +	else if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444)
> +		frame.avi.colorspace = HDMI_COLORSPACE_YUV444;
>  	else
>  		frame.avi.colorspace = HDMI_COLORSPACE_RGB;
>  
> -- 
> 2.7.4

-- 
Ville Syrjälä
Intel