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drm/i915/dp: Check if DSC supports the given output_format

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Go with DSC only if the given output_format is supported.

v2: Use drm helper to get DSC format support for sink.

v3: remove drm_dp_dsc_compute_bpp.

Cc: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230309062855.393087-3-suraj.kandpal@intel.com
This commit is contained in:
Ankit Nautiyal 2023-03-09 11:58:50 +05:30 committed by Uma Shankar
parent a389789c0a
commit 5011f2915b
1 changed files with 28 additions and 0 deletions
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28
drivers/gpu/drm/i915/display/intel_dp.c
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@ -1515,6 +1515,31 @@ static int intel_dp_dsc_compute_params(struct intel_encoder *encoder,
return drm_dsc_compute_rc_parameters(vdsc_cfg);
}
static bool intel_dp_dsc_supports_format(struct intel_dp *intel_dp,
enum intel_output_format output_format)
{
u8 sink_dsc_format;
switch (output_format) {
case INTEL_OUTPUT_FORMAT_RGB:
sink_dsc_format = DP_DSC_RGB;
break;
case INTEL_OUTPUT_FORMAT_YCBCR444:
sink_dsc_format = DP_DSC_YCbCr444;
break;
case INTEL_OUTPUT_FORMAT_YCBCR420:
if (min(intel_dp_source_dsc_version_minor(intel_dp),
intel_dp_sink_dsc_version_minor(intel_dp)) < 2)
return false;
sink_dsc_format = DP_DSC_YCbCr420_Native;
break;
default:
return false;
}
return drm_dp_dsc_sink_supports_format(intel_dp->dsc_dpcd, sink_dsc_format);
}
int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
struct intel_crtc_state *pipe_config,
struct drm_connector_state *conn_state,
@ -1535,6 +1560,9 @@ int intel_dp_dsc_compute_config(struct intel_dp *intel_dp,
if (!intel_dp_supports_dsc(intel_dp, pipe_config))
return -EINVAL;
if (!intel_dp_dsc_supports_format(intel_dp, pipe_config->output_format))
return -EINVAL;
if (compute_pipe_bpp)
pipe_bpp = intel_dp_dsc_compute_bpp(intel_dp, conn_state->max_requested_bpc);
else