Fill the crtc_state members to store the configuration required by PCONs for color/format conversion for a YCBCR420 mode and the computed output format.
This will be later used during protocol_converter_config to program the PCON to use appropriate color/format conversion. Signed-off-by: Ankit Nautiyal <[email protected]> --- drivers/gpu/drm/i915/display/intel_dp.c | 27 +++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index b6f62444b589..4c1a0d9f750c 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -1970,6 +1970,30 @@ static bool intel_dp_has_audio(struct intel_encoder *encoder, return intel_conn_state->force_audio == HDMI_AUDIO_ON; } +static void +intel_dp_compute_dfp_ycbcr420(struct intel_encoder *encoder, + struct intel_crtc_state *crtc_state) +{ + struct intel_dp *intel_dp = enc_to_intel_dp(encoder); + + if (!drm_dp_is_branch(intel_dp->dpcd)) + return; + + /* Mode is YCBCR420, output_format is also YCBCR420: Passthrough */ + if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR420) + return; + + /* Mode is YCBCR420, output_format is YCBCR444: Downsample */ + if (crtc_state->output_format == INTEL_OUTPUT_FORMAT_YCBCR444) { + crtc_state->dp_dfp_config.ycbcr_444_to_420 = true; + return; + } + + /* Mode is YCBCR420, output_format is RGB: Convert to YCBCR444 and Downsample */ + crtc_state->dp_dfp_config.rgb_to_ycbcr = true; + crtc_state->dp_dfp_config.ycbcr_444_to_420 = true; +} + static int intel_dp_compute_output_format(struct intel_encoder *encoder, struct intel_crtc_state *crtc_state, @@ -1987,6 +2011,8 @@ intel_dp_compute_output_format(struct intel_encoder *encoder, ycbcr_420_only = drm_mode_is_420_only(info, adjusted_mode); crtc_state->output_format = intel_dp_output_format(connector, ycbcr_420_only); + if (ycbcr_420_only) + intel_dp_compute_dfp_ycbcr420(encoder, crtc_state); if (ycbcr_420_only && !intel_dp_is_ycbcr420(intel_dp, crtc_state)) { drm_dbg_kms(&i915->drm, @@ -2003,6 +2029,7 @@ intel_dp_compute_output_format(struct intel_encoder *encoder, return ret; crtc_state->output_format = intel_dp_output_format(connector, true); + intel_dp_compute_dfp_ycbcr420(encoder, crtc_state); ret = intel_dp_compute_link_config(encoder, crtc_state, conn_state, respect_downstream_limits); } -- 2.25.1
