Re: [PATCH v2 2/2] drm/msm/dpu: fix DSC 1.2 enc subblock length

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On 8/2/2023 12:46 PM, Marijn Suijten wrote:
On 2023-08-02 21:36:55, Dmitry Baryshkov wrote:
Both struct dpu_dsc_sub_blks instances declare enc subblock length to be
0x100, while the actual length is 0x9c (last register having offset 0x98).
Reduce subblock length to remove the empty register space from being
dumped.

Fixes: 0d1b10c63346 ("drm/msm/dpu: add DSC 1.2 hw blocks for relevant chipsets")
Reviewed-by: Abhinav Kumar <quic_abhinavk@xxxxxxxxxxx>
Reviewed-by: Marijn Suijten <marijn.suijten@xxxxxxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---

Changes since v1:
  - Rebased on top of the catalog changes

---

  drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
index 3ff07d7cbf4b..f1bac5e88249 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
@@ -456,12 +456,12 @@ static const struct dpu_pingpong_sub_blks sc7280_pp_sblk = {
   * DSC sub blocks config
   *************************************************************/
  static const struct dpu_dsc_sub_blks dsc_sblk_0 = {
-	.enc = {.name = "enc", .base = 0x100, .len = 0x100},
+	.enc = {.name = "enc", .base = 0x100, .len = 0x9c},
  	.ctl = {.name = "ctl", .base = 0xF00, .len = 0x10},

For the time being only ctl register 0x00 and 0x04 is touched,
DATA_IN_SWAP and CLK_CTRL at 0x08 and 0x0c are defined but not used,
though it might still be useful to see their current value in the dump.

- Marijn


Yes, we should keep them.

  };
static const struct dpu_dsc_sub_blks dsc_sblk_1 = {
-	.enc = {.name = "enc", .base = 0x200, .len = 0x100},
+	.enc = {.name = "enc", .base = 0x200, .len = 0x9c},
  	.ctl = {.name = "ctl", .base = 0xF80, .len = 0x10},
  };
--
2.39.2




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