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From c9cf1e80259276c3da76bc03ab0aaa9dfac481ae Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com>
Date: Sun, 18 Nov 2018 14:06:11 +0100
Subject: [PATCH] drm/meson: Output in YUV444 if sink supports it
With the YUV420 handling, we can no dynamically setup the HDMI output
pixel format depending on the mode and connector info.
So now, we can output in YUV444, which is the native video pipeline
format, directly the the HDMI Sink it it's supported, without
involving the HDMI Controller CSC.
---
drivers/gpu/drm/meson/meson_dw_hdmi.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/meson/meson_dw_hdmi.c b/drivers/gpu/drm/meson/meson_dw_hdmi.c
index 0b9ecbf..6df124c 100644
--- a/drivers/gpu/drm/meson/meson_dw_hdmi.c
+++ b/drivers/gpu/drm/meson/meson_dw_hdmi.c
@@ -670,7 +670,10 @@ static int meson_venc_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
dw_hdmi->output_bus_format = MEDIA_BUS_FMT_UYYVYY8_0_5X24;
} else {
dw_hdmi->input_bus_format = MEDIA_BUS_FMT_YUV8_1X24;
- dw_hdmi->output_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
+ if (info->color_formats & DRM_COLOR_FORMAT_YCRCB444)
+ dw_hdmi->output_bus_format = MEDIA_BUS_FMT_YUV8_1X24;
+ else
+ dw_hdmi->output_bus_format = MEDIA_BUS_FMT_RGB888_1X24;
}
return 0;
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