On 30/03/2023 02:45, Jessica Zhang wrote:
On 3/29/2023 4:31 PM, Dmitry Baryshkov wrote:
On 30/03/2023 02:18, Jessica Zhang wrote:
Signed-off-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
index 619926da1441..648c530b5d05 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_dsc.c
@@ -3,6 +3,8 @@
* Copyright (c) 2020-2022, Linaro Limited
*/
+#include <drm/display/drm_dsc_helper.h>
+
#include "dpu_kms.h"
#include "dpu_hw_catalog.h"
#include "dpu_hwio.h"
@@ -102,7 +104,7 @@ static void dpu_hw_dsc_config(struct dpu_hw_dsc
*hw_dsc,
data |= dsc->final_offset;
DPU_REG_WRITE(c, DSC_DSC_OFFSET, data);
- det_thresh_flatness = 7 + 2 * (dsc->bits_per_component - 8);
+ det_thresh_flatness = drm_dsc_calculate_det_thresh_flatness(dsc);
But this changes the value! Compare:
bpc | old | new
8 | 7 | 2
10 | 11 | 8
12 | 15 | 256
If this is intentional, please state so and maybe add a Fixes tag.
Hi Dmitry,
Yep this was intentional to match downstream and the spec. Will add a
fixes tag for this.
Good! I found corresponding change in msm-4.14, so now I understand why
previously we had what we had.
Thanks,
Jessica Zhang
data = det_thresh_flatness << 10;
data |= dsc->flatness_max_qp << 5;
data |= dsc->flatness_min_qp;
--
With best wishes
Dmitry
--
With best wishes
Dmitry
