[PATCH AUTOSEL 5.6 016/149] drm/amd/display: Fix test pattern color space inconsistency for Linux

Sasha Levin
2020-04-11T23:04:22Z

From: "Jerry (Fangzhi) Zuo" <Jerry.Zuo@amd.com>

[ Upstream commit ef65c702d40637ed9ee25edc8e8a994168a32377 ]

[why]
When reprogram MSA with updated color space, the test color space shows
inconsistency. Linux has separate routine to set up test pattern color
space, but it fails to configure RGB.

[How]
Add RGB to test pattern.

Fixes: 43563bc2e6a769 ("drm/amd/display: update MSA and VSC SDP on video test pattern request")
Signed-off-by: Jerry (Fangzhi) Zuo <Jerry.Zuo@amd.com>
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index fd9e69634c50a..f01bc378a51ee 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -2654,9 +2654,12 @@ static void dp_test_send_link_test_pattern(struct dc_link *link)
break;
}

- test_pattern_color_space = dpcd_test_params.bits.YCBCR_COEFS ?
- DP_TEST_PATTERN_COLOR_SPACE_YCBCR709 :
- DP_TEST_PATTERN_COLOR_SPACE_YCBCR601;
+ if (dpcd_test_params.bits.CLR_FORMAT == 0)
+ test_pattern_color_space = DP_TEST_PATTERN_COLOR_SPACE_RGB;
+ else
+ test_pattern_color_space = dpcd_test_params.bits.YCBCR_COEFS ?
+ DP_TEST_PATTERN_COLOR_SPACE_YCBCR709 :
+ DP_TEST_PATTERN_COLOR_SPACE_YCBCR601;

dc_link_dp_set_test_pattern(
link,
--
2.20.1