linux-kernel - [PATCH v2 03/16] drm/msm/dpu: fix writeback programming for YUV cases

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Message-ID: <20231208050641.32582-4-quic_abhinavk@quicinc.com>
Date:   Thu, 7 Dec 2023 21:06:28 -0800
From:   Abhinav Kumar <quic_abhinavk@...cinc.com>
To:     <freedreno@...ts.freedesktop.org>, Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>,
        "Daniel Vetter" <daniel@...ll.ch>
CC:     <dri-devel@...ts.freedesktop.org>, <quic_jesszhan@...cinc.com>,
        <quic_parellan@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v2 03/16] drm/msm/dpu: fix writeback programming for YUV cases

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@...cinc.com>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c | 3 +++
 1 file changed, 3 insertions(+)

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 ed0e80616129..e75995f7fcea 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_wb.c
@@ -89,6 +89,9 @@ 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)  |
-- 
2.40.1