From 5771de5d5b3bfaf279e5c262a113d4b6fbe54355 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Tue, 10 Nov 2020 10:39:46 -0800 Subject: drm/msm/a5xx: Clear shadow on suspend Similar to the previous patch, clear shadow on suspend to avoid timeouts waiting for ringbuffer space. Fixes: 8907afb476ac ("drm/msm: Allow a5xx to mark the RPTR shadow as privileged") Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm/msm/adreno/a5xx_gpu.c') diff --git a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c index b0005ccd81c6..8fa5c917d017 100644 --- a/drivers/gpu/drm/msm/adreno/a5xx_gpu.c +++ b/drivers/gpu/drm/msm/adreno/a5xx_gpu.c @@ -1206,7 +1206,9 @@ static int a5xx_pm_resume(struct msm_gpu *gpu) static int a5xx_pm_suspend(struct msm_gpu *gpu) { struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu); + struct a5xx_gpu *a5xx_gpu = to_a5xx_gpu(adreno_gpu); u32 mask = 0xf; + int i, ret; /* A510 has 3 XIN ports in VBIF */ if (adreno_is_a510(adreno_gpu)) @@ -1226,7 +1228,15 @@ static int a5xx_pm_suspend(struct msm_gpu *gpu) gpu_write(gpu, REG_A5XX_RBBM_BLOCK_SW_RESET_CMD, 0x003C0000); gpu_write(gpu, REG_A5XX_RBBM_BLOCK_SW_RESET_CMD, 0x00000000); - return msm_gpu_pm_suspend(gpu); + ret = msm_gpu_pm_suspend(gpu); + if (ret) + return ret; + + if (a5xx_gpu->has_whereami) + for (i = 0; i < gpu->nr_rings; i++) + a5xx_gpu->shadow[i] = 0; + + return 0; } static int a5xx_get_timestamp(struct msm_gpu *gpu, uint64_t *value) -- cgit