This is a note to let you know that I've just added the patch titled
drm/msm/dpu: fix writeback programming for YUV cases
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-msm-dpu-fix-writeback-programming-for-yuv-cases.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit bebcd3207d240917e6de6d05353fe7f3568270cd
Author: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Date: Tue Dec 12 12:52:41 2023 -0800
drm/msm/dpu: fix writeback programming for YUV cases
[ Upstream commit 79caf2f2202b9eaad3a5a726e4b33807f67d0f1b ]
For YUV cases, setting the required format bits was missed
out in the register programming. Lets fix it now in preparation
of adding YUV formats support for writeback.
changes in v2:
- dropped the fixes tag as its not a fix but adding
new functionality
Signed-off-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Patchwork: https://patchwork.freedesktop.org/patch/571814/
Link: https://lore.kernel.org/r/20231212205254.12422-4-quic_abhinavk@xxxxxxxxxxx
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
index ebc416400382..0aa598b355e9 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
@@ -86,6 +86,9 @@ static void dpu_hw_wb_setup_format(struct dpu_hw_wb *ctx,
dst_format |= BIT(14); /* DST_ALPHA_X */
}
+ if (DPU_FORMAT_IS_YUV(fmt))
+ dst_format |= BIT(15);
+
pattern = (fmt->element[3] << 24) |
(fmt->element[2] << 16) |
(fmt->element[1] << 8) |
