Re: [PATCH v17 5/6] drm/bridge: dw-hdmi: add YCBCR formats only if CSC is available

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On 06/04/2022 18:26, H. Nikolaus Schaller wrote:
otherwise they will produce a black HDMI screen.

Signed-off-by: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
---
  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 6 ++++--
  1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index b5a665c5e406e..ec40dd8865065 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -2628,10 +2628,12 @@ static u32 *dw_hdmi_bridge_atomic_get_output_bus_fmts(struct drm_bridge *bridge,
  		output_fmts[i++] = MEDIA_BUS_FMT_RGB101010_1X30;
  	}
- if (hdmi->sink_is_hdmi && info->color_formats & DRM_COLOR_FORMAT_YCBCR422)
+	if (hdmi->csc_available && hdmi->sink_is_hdmi &&
+	    (info->color_formats & DRM_COLOR_FORMAT_YCBCR422))
  		output_fmts[i++] = MEDIA_BUS_FMT_UYVY8_1X16;
- if (hdmi->sink_is_hdmi && info->color_formats & DRM_COLOR_FORMAT_YCBCR444)
+	if (hdmi->csc_available && hdmi->sink_is_hdmi &&
+	    (info->color_formats & DRM_COLOR_FORMAT_YCBCR444))
  		output_fmts[i++] = MEDIA_BUS_FMT_YUV8_1X24;
/* Default 8bit RGB fallback */

This patch shouldn't be needed anymore with proper filtering in patch 1.

Neil



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