[PATCH] drm/msm/gpu: Increase the pm runtime autosuspend for 5xx

[Jordan Crouse <jcrouse-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>]

Experimentation shows that resuming power quickly after suspending
ends up forcing a system hang for unknown reasons on 5xx targets.
To avoid cycling the power too much (especially during init)
turn up the autosuspend time for a5xx to 250ms and use
pm_runtime_put_autosuspend() when applicable.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
---
 drivers/gpu/drm/msm/adreno/adreno_device.c | 13 ++++++++++++-
 drivers/gpu/drm/msm/adreno/adreno_gpu.c    |  3 ++-
 drivers/gpu/drm/msm/adreno/adreno_gpu.h    |  1 +
 3 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/adreno_device.c b/drivers/gpu/drm/msm/adreno/adreno_device.c
index 8e0cb161754b..e8499fffbefb 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_device.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_device.c
@@ -35,6 +35,7 @@ static const struct adreno_info gpulist[] = {
 			[ADRENO_FW_PFP] = "a300_pfp.fw",
 		},
 		.gmem  = SZ_256K,
+		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(3, 0, 6, 0),
@@ -45,6 +46,7 @@ static const struct adreno_info gpulist[] = {
 			[ADRENO_FW_PFP] = "a300_pfp.fw",
 		},
 		.gmem  = SZ_128K,
+		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(3, 2, ANY_ID, ANY_ID),
@@ -55,6 +57,7 @@ static const struct adreno_info gpulist[] = {
 			[ADRENO_FW_PFP] = "a300_pfp.fw",
 		},
 		.gmem  = SZ_512K,
+		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(3, 3, 0, ANY_ID),
@@ -65,6 +68,7 @@ static const struct adreno_info gpulist[] = {
 			[ADRENO_FW_PFP] = "a330_pfp.fw",
 		},
 		.gmem  = SZ_1M,
+		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
 		.init  = a3xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(4, 2, 0, ANY_ID),
@@ -75,6 +79,7 @@ static const struct adreno_info gpulist[] = {
 			[ADRENO_FW_PFP] = "a420_pfp.fw",
 		},
 		.gmem  = (SZ_1M + SZ_512K),
+		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
 		.init  = a4xx_gpu_init,
 	}, {
 		.rev   = ADRENO_REV(4, 3, 0, ANY_ID),
@@ -85,6 +90,7 @@ static const struct adreno_info gpulist[] = {
 			[ADRENO_FW_PFP] = "a420_pfp.fw",
 		},
 		.gmem  = (SZ_1M + SZ_512K),
+		.inactive_period = DRM_MSM_INACTIVE_PERIOD,
 		.init  = a4xx_gpu_init,
 	}, {
 		.rev = ADRENO_REV(5, 3, 0, 2),
@@ -96,6 +102,11 @@ static const struct adreno_info gpulist[] = {
 			[ADRENO_FW_GPMU] = "a530v3_gpmu.fw2",
 		},
 		.gmem = SZ_1M,
+		/*
+		 * Increase inactive period to 250 to avoid bouncing
+		 * the GDSC which appears to make it grumpy
+		 */
+		.inactive_period = 250,
 		.quirks = ADRENO_QUIRK_TWO_PASS_USE_WFI |
 			ADRENO_QUIRK_FAULT_DETECT_MASK,
 		.init = a5xx_gpu_init,
@@ -158,7 +169,7 @@ struct msm_gpu *adreno_load_gpu(struct drm_device *dev)
 	mutex_lock(&dev->struct_mutex);
 	ret = msm_gpu_hw_init(gpu);
 	mutex_unlock(&dev->struct_mutex);
-	pm_runtime_put_sync(&pdev->dev);
+	pm_runtime_put_autosuspend(&pdev->dev);
 	if (ret) {
 		dev_err(dev->dev, "gpu hw init failed: %d\n", ret);
 		return NULL;
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
index 17d0506d058c..bcbf9f2a29f9 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c
@@ -565,7 +565,8 @@ int adreno_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 
 	adreno_get_pwrlevels(&pdev->dev, gpu);
 
-	pm_runtime_set_autosuspend_delay(&pdev->dev, DRM_MSM_INACTIVE_PERIOD);
+	pm_runtime_set_autosuspend_delay(&pdev->dev,
+		adreno_gpu->info->inactive_period);
 	pm_runtime_use_autosuspend(&pdev->dev);
 	pm_runtime_enable(&pdev->dev);
 
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.h b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
index d6b0e7b813f4..bc9ec27e9ed8 100644
--- a/drivers/gpu/drm/msm/adreno/adreno_gpu.h
+++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.h
@@ -84,6 +84,7 @@ struct adreno_info {
 	enum adreno_quirks quirks;
 	struct msm_gpu *(*init)(struct drm_device *dev);
 	const char *zapfw;
+	u32 inactive_period;
 };
 
 const struct adreno_info *adreno_info(struct adreno_rev rev);
-- 
2.17.0

_______________________________________________
Freedreno mailing list
Freedreno@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/freedreno