diff options
| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2023-06-20 13:10:38 +0200 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2023-08-07 14:30:49 -0700 |
| commit | 29af7605453797b9b58c3369314bd5710f5ea2ba (patch) | |
| tree | a05183a8c8e379601b1b146f2dfc6186aee969f3 | |
| parent | 02a726fc6b2892a5fe4704060594b1af9c2ff953 (diff) | |
drm/msm/a6xx: Skip empty protection ranges entries
Some specific SKUs leave certain protection range registers empty.
Allow for that behavior.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/543334/
Signed-off-by: Rob Clark <robdclark@chromium.org>
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c index e0c90393cda5..15006ba63b6a 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c @@ -935,8 +935,11 @@ static void a6xx_set_cp_protect(struct msm_gpu *gpu) A6XX_CP_PROTECT_CNTL_ACCESS_FAULT_ON_VIOL_EN | A6XX_CP_PROTECT_CNTL_LAST_SPAN_INF_RANGE); - for (i = 0; i < count - 1; i++) - gpu_write(gpu, REG_A6XX_CP_PROTECT(i), regs[i]); + for (i = 0; i < count - 1; i++) { + /* Intentionally skip writing to some registers */ + if (regs[i]) + gpu_write(gpu, REG_A6XX_CP_PROTECT(i), regs[i]); + } /* last CP_PROTECT to have "infinite" length on the last entry */ gpu_write(gpu, REG_A6XX_CP_PROTECT(count_max - 1), regs[i]); } |