From a24b5c5b6877d031ec42ff3d65095bac67372f2a Mon Sep 17 00:00:00 2001 From: Mikita Lipski Date: Wed, 4 Jul 2018 09:27:02 -0400 Subject: [PATCH] drm/amdgpu: add ycbcr420 pixel encoding for hdmi [why] HDMI EDID's VSDB contains spectial timings for specifically YCbCr 4:2:0 colour space. In those cases we need to verify if the mode provided is one of the special ones has to use YCbCr 4:2:0 pixel encoding for display info. [how] Add an if statement using DRM helper function to check if its specific ycbcr420 mode and assign it to pixel encoding Signed-off-by: Mikita Lipski --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 01d14d8..ed09e36 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -2226,7 +2226,7 @@ fill_stream_properties_from_drm_display_mode(struct dc_stream_state *stream, const struct drm_connector *connector) { struct dc_crtc_timing *timing_out = &stream->timing; - + const struct drm_display_info *info = &connector->display_info; memset(timing_out, 0, sizeof(struct dc_crtc_timing)); timing_out->h_border_left = 0; @@ -2234,8 +2234,10 @@ fill_stream_properties_from_drm_display_mode(struct dc_stream_state *stream, timing_out->v_border_top = 0; timing_out->v_border_bottom = 0; /* TODO: un-hardcode */ - - if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB444) + if (drm_mode_is_420_only(info, mode_in) + && stream->sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) + timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR420; + else if ((connector->display_info.color_formats & DRM_COLOR_FORMAT_YCRCB444) && stream->sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A) timing_out->pixel_encoding = PIXEL_ENCODING_YCBCR444; else -- 2.7.4