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Subject[PATCH AUTOSEL 5.4 01/19] drm/bridge: dw-hdmi: fix AVI frame colorimetry
Date
From: Jernej Skrabec <jernej.skrabec@siol.net>

[ Upstream commit e8dca30f7118461d47e1c3510d0e31b277439151 ]

CTA-861-F explicitly states that for RGB colorspace colorimetry should
be set to "none". Fix that.

Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Fixes: def23aa7e982 ("drm: bridge: dw-hdmi: Switch to V4L bus format and encodings")
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20200304232512.51616-2-jernej.skrabec@siol.net
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/bridge/synopsys/dw-hdmi.c | 46 +++++++++++++----------
1 file changed, 26 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
index 1326f2c734bf8..41bf4aaff21c4 100644
--- a/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/synopsys/dw-hdmi.c
@@ -1576,28 +1576,34 @@ static void hdmi_config_AVI(struct dw_hdmi *hdmi, struct drm_display_mode *mode)
frame.colorspace = HDMI_COLORSPACE_RGB;

/* Set up colorimetry */
- switch (hdmi->hdmi_data.enc_out_encoding) {
- case V4L2_YCBCR_ENC_601:
- if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV601)
- frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
- else
+ if (!hdmi_bus_fmt_is_rgb(hdmi->hdmi_data.enc_out_bus_format)) {
+ switch (hdmi->hdmi_data.enc_out_encoding) {
+ case V4L2_YCBCR_ENC_601:
+ if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV601)
+ frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
+ else
+ frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
+ frame.extended_colorimetry =
+ HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
+ break;
+ case V4L2_YCBCR_ENC_709:
+ if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV709)
+ frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
+ else
+ frame.colorimetry = HDMI_COLORIMETRY_ITU_709;
+ frame.extended_colorimetry =
+ HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
+ break;
+ default: /* Carries no data */
frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
+ frame.extended_colorimetry =
+ HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
+ break;
+ }
+ } else {
+ frame.colorimetry = HDMI_COLORIMETRY_NONE;
frame.extended_colorimetry =
- HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
- break;
- case V4L2_YCBCR_ENC_709:
- if (hdmi->hdmi_data.enc_in_encoding == V4L2_YCBCR_ENC_XV709)
- frame.colorimetry = HDMI_COLORIMETRY_EXTENDED;
- else
- frame.colorimetry = HDMI_COLORIMETRY_ITU_709;
- frame.extended_colorimetry =
- HDMI_EXTENDED_COLORIMETRY_XV_YCC_709;
- break;
- default: /* Carries no data */
- frame.colorimetry = HDMI_COLORIMETRY_ITU_601;
- frame.extended_colorimetry =
- HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
- break;
+ HDMI_EXTENDED_COLORIMETRY_XV_YCC_601;
}

frame.scan_mode = HDMI_SCAN_MODE_NONE;
--
2.20.1
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