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| author | Konrad Dybcio <konrad.dybcio@linaro.org> | 2023-06-16 01:20:49 +0200 |
|---|---|---|
| committer | Rob Clark <robdclark@chromium.org> | 2023-06-18 20:34:29 +0200 |
| commit | 277b967829aad7b24327f246087805078a62076e (patch) | |
| tree | 125b1a5d90fc3f07edd4a78ba34ab2c3d13220af /drivers/gpu/drm/msm/adreno/a6xx_gmu.c | |
| parent | drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions() (diff) | |
| download | linux-277b967829aad7b24327f246087805078a62076e.tar.xz linux-277b967829aad7b24327f246087805078a62076e.zip | |
drm/msm/a6xx: Add a helper for software-resetting the GPU
Introduce a6xx_gpu_sw_reset() in preparation for adding GMU wrapper
GPUs and reuse it in a6xx_gmu_force_off().
This helper, contrary to the original usage in GMU code paths, adds
a readback+delay sequence to ensure that the reset is never deasserted
too quickly due to e.g. OoO execution going crazy.
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/542758/
Signed-off-by: Rob Clark <robdclark@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/msm/adreno/a6xx_gmu.c')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/a6xx_gmu.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 6402544f6849..906bed49f27d 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -899,8 +899,7 @@ static void a6xx_gmu_force_off(struct a6xx_gmu *gmu) a6xx_bus_clear_pending_transactions(adreno_gpu, true); /* Reset GPU core blocks */ - gpu_write(gpu, REG_A6XX_RBBM_SW_RESET_CMD, 1); - udelay(100); + a6xx_gpu_sw_reset(gpu, true); } static void a6xx_gmu_set_initial_freq(struct msm_gpu *gpu, struct a6xx_gmu *gmu) |