From: Martin Leung martin.leung@amd.com
[ Upstream commit e592e85f3378246dd66b861fa60ef803d8cece6b ]
[why] on some displays that prefer swapped polarity we were seeing L/R images swapped because OTG_STEREO_SYNC_OUTPUT_POLARITY would always be mapped to 0
[how] fix initial dal3 implementation to properly update the polarity field according to the crtc_stereo_flags (same as OTG_STEREO_EYE_FLAG_POLARITY)
Signed-off-by: Martin Leung martin.leung@amd.com Reviewed-by: Aric Cyr Aric.Cyr@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/dcn10/dcn10_optc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c index 411f89218e019..ff3a87c9d5194 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_optc.c @@ -1161,7 +1161,7 @@ static void optc1_enable_stereo(struct timing_generator *optc, REG_UPDATE_3(OTG_STEREO_CONTROL, OTG_STEREO_EN, stereo_en, OTG_STEREO_SYNC_OUTPUT_LINE_NUM, 0, - OTG_STEREO_SYNC_OUTPUT_POLARITY, 0); + OTG_STEREO_SYNC_OUTPUT_POLARITY, flags->RIGHT_EYE_POLARITY == 0 ? 0 : 1);
if (flags->PROGRAM_POLARITY) REG_UPDATE(OTG_STEREO_CONTROL,