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Message-Id: <20201110184401.282982-2-robdclark@gmail.com>
Date: Tue, 10 Nov 2020 10:44:00 -0800
From: Rob Clark <robdclark@...il.com>
To: dri-devel@...ts.freedesktop.org
Cc: Rob Clark <robdclark@...omium.org>,
Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Jordan Crouse <jcrouse@...eaurora.org>,
"Kristian H. Kristensen" <hoegsberg@...gle.com>,
Eric Anholt <eric@...olt.net>,
"Gustavo A. R. Silva" <gustavoars@...nel.org>,
Emil Velikov <emil.velikov@...labora.com>,
linux-arm-msm@...r.kernel.org (open list:DRM DRIVER FOR MSM ADRENO GPU),
freedreno@...ts.freedesktop.org (open list:DRM DRIVER FOR MSM ADRENO
GPU), linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/2] drm/msm/a5xx: Clear shadow on suspend
From: Rob Clark <robdclark@...omium.org>
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 <robdclark@...omium.org>
---
drivers/gpu/drm/msm/adreno/a5xx_gpu.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
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)
--
2.28.0
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