[Intel-gfx] [PATCH v6 22/28] drm/i915/dp: Populate DSC PPS SDP and send PPS infoframes

[Ville Syrjälä]

On Wed, Oct 24, 2018 at 03:28:34PM -0700, Manasi Navare wrote:
> DSC PPS secondary data packet infoframes are filled with
> DSC picure parameter set metadata according to the DSC standard.
> These infoframes are sent to the sink device and used during DSC
> decoding.
> 
> v2:
> * Rebase ond drm-tip
> 
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
> Cc: Anusha Srivatsa <anusha.srivatsa at intel.com>
> Signed-off-by: Manasi Navare <manasi.d.navare at intel.com>
> Reviewed-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
> ---
>  drivers/gpu/drm/i915/intel_vdsc.c | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_vdsc.c b/drivers/gpu/drm/i915/intel_vdsc.c
> index b0fc716bbbfd..4b4b812d68f3 100644
> --- a/drivers/gpu/drm/i915/intel_vdsc.c
> +++ b/drivers/gpu/drm/i915/intel_vdsc.c
> @@ -988,6 +988,25 @@ static void intel_configure_pps_for_dsc_encoder(struct intel_encoder *encoder,
>  	}
>  }
>  
> +static void intel_dp_send_dsc_pps_sdp(struct intel_encoder *encoder,
> +				      struct intel_crtc_state *crtc_state)

const crtc_state

s/send/write/ ?

> +{
> +	struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
> +	struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
> +	struct drm_dsc_config *vdsc_cfg = &crtc_state->dp_dsc_cfg;
> +	struct drm_dsc_pps_infoframe dp_dsc_pps_sdp;
> +
> +	/* Prepare DP SDP PPS header as per DP 1.4 spec, Table 2-123 */
> +	drm_dsc_dp_pps_header_init(&dp_dsc_pps_sdp);
> +
> +	/* Fill the PPS payload bytes as per DSC spec 1.2 Table 4-1 */
> +	drm_dsc_pps_infoframe_pack(&dp_dsc_pps_sdp, vdsc_cfg);
> +
> +	intel_dig_port->write_infoframe(encoder, crtc_state,
> +					DP_SDP_PPS, &dp_dsc_pps_sdp,
> +					sizeof(dp_dsc_pps_sdp));
> +}
> +
>  void intel_dsc_enable(struct intel_encoder *encoder,
>  		      struct intel_crtc_state *crtc_state)
>  {
> @@ -997,5 +1016,7 @@ void intel_dsc_enable(struct intel_encoder *encoder,
>  
>  	intel_configure_pps_for_dsc_encoder(encoder, crtc_state);
>  
> +	intel_dp_send_dsc_pps_sdp(encoder, crtc_state);
> +
>  	return;
>  }
> -- 
> 2.18.0

-- 
Ville Syrjälä
Intel