From: Ville Syrjälä Date: Tue, 22 Mar 2022 12:00:14 +0000 (+0200) Subject: drm/i915/dp: Fix DFP rgb->ycbcr conversion matrix X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=af65840f199fa3cdeaca3a8476cb0a821dd4887a;p=linux.git drm/i915/dp: Fix DFP rgb->ycbcr conversion matrix Our YCbCr output is always supposed to be limited range BT.709. That's what we send with native HDMI. The conn_state->colorspace stuff is entirely independent of that and is not supposed to alter the generated output in any way. If we want a way to do that then we need a new proprty for it. Make it so that the RGB->YCbCr conversion when performed by the DPF will match the BT.709 we would transmit with native HDMI. Cc: Ankit Nautiyal Cc: Uma Shankar Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20220322120015.28074-12-ville.syrjala@linux.intel.com Reviewed-by: Uma Shankar --- diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 447eaaf115aee..972c9ed468299 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -2625,38 +2625,8 @@ void intel_dp_configure_protocol_converter(struct intel_dp *intel_dp, "Failed to %s protocol converter YCbCr 4:2:0 conversion mode\n", str_enable_disable(intel_dp->dfp.ycbcr_444_to_420)); - tmp = 0; - if (intel_dp->dfp.rgb_to_ycbcr) { - bool bt2020, bt709; - - /* - * FIXME: Currently if userspace selects BT2020 or BT709, but PCON supports only - * RGB->YCbCr for BT601 colorspace, we go ahead with BT601, as default. - * - */ - tmp = DP_CONVERSION_BT601_RGB_YCBCR_ENABLE; - - bt2020 = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd, - intel_dp->downstream_ports, - DP_DS_HDMI_BT2020_RGB_YCBCR_CONV); - bt709 = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd, - intel_dp->downstream_ports, - DP_DS_HDMI_BT709_RGB_YCBCR_CONV); - switch (crtc_state->infoframes.vsc.colorimetry) { - case DP_COLORIMETRY_BT2020_RGB: - case DP_COLORIMETRY_BT2020_YCC: - if (bt2020) - tmp = DP_CONVERSION_BT2020_RGB_YCBCR_ENABLE; - break; - case DP_COLORIMETRY_BT709_YCC: - case DP_COLORIMETRY_XVYCC_709: - if (bt709) - tmp = DP_CONVERSION_BT709_RGB_YCBCR_ENABLE; - break; - default: - break; - } - } + tmp = intel_dp->dfp.rgb_to_ycbcr ? + DP_CONVERSION_BT709_RGB_YCBCR_ENABLE : 0; if (drm_dp_pcon_convert_rgb_to_ycbcr(&intel_dp->aux, tmp) < 0) drm_dbg_kms(&i915->drm, @@ -4510,9 +4480,7 @@ intel_dp_update_420(struct intel_dp *intel_dp) intel_dp->downstream_ports); rgb_to_ycbcr = drm_dp_downstream_rgb_to_ycbcr_conversion(intel_dp->dpcd, intel_dp->downstream_ports, - DP_DS_HDMI_BT601_RGB_YCBCR_CONV | - DP_DS_HDMI_BT709_RGB_YCBCR_CONV | - DP_DS_HDMI_BT2020_RGB_YCBCR_CONV); + DP_DS_HDMI_BT709_RGB_YCBCR_CONV); if (DISPLAY_VER(i915) >= 11) { /* Let PCON convert from RGB->YCbCr if possible */