[v2,4/5] drm/msm/a6xx: Remove cx gdsc polling using 'reset'

Commit Message

Akhil P Oommen Dec. 16, 2022, 10:21 a.m. UTC

Remove the unused 'reset' interface which was supposed to help to ensure
that cx gdsc has collapsed during gpu recovery. This is was not enabled
so far due to missing gpucc driver support. Similar functionality using
genpd framework will be implemented in the upcoming patch.

Signed-off-by: Akhil P Oommen <[e-mail]>
---

(no changes since v1)

 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 4 ----
 drivers/gpu/drm/msm/msm_gpu.c         | 4 ----
 drivers/gpu/drm/msm/msm_gpu.h         | 4 ----
 3 files changed, 12 deletions(-)

Comments

Philipp Zabel Dec. 16, 2022, 10:42 a.m. UTC | #1

On Fr, 2022-12-16 at 15:51 +0530, Akhil P Oommen wrote:
> Remove the unused 'reset' interface which was supposed to help to ensure
> that cx gdsc has collapsed during gpu recovery. This is was not enabled
> so far due to missing gpucc driver support. Similar functionality using
> genpd framework will be implemented in the upcoming patch.

Maybe mention that this effectively reverts commit 1f6cca404918
("drm/msm/a6xx: Ensure CX collapse during gpu recovery").

regards
Philipp

Patch

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 36c8fb699b56..4b16e75dfa50 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -10,7 +10,6 @@ 
 
 #include <linux/bitfield.h>
 #include <linux/devfreq.h>
-#include <linux/reset.h>
 #include <linux/soc/qcom/llcc-qcom.h>
 
 #define GPU_PAS_ID 13
@@ -1298,9 +1297,6 @@  static void a6xx_recover(struct msm_gpu *gpu)
 	/* And the final one from recover worker */
 	pm_runtime_put_sync(&gpu->pdev->dev);
 
-	/* Call into gpucc driver to poll for cx gdsc collapse */
-	reset_control_reset(gpu->cx_collapse);
-
 	pm_runtime_use_autosuspend(&gpu->pdev->dev);
 
 	if (active_submits)
diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 30ed45af76ad..97e1319d4577 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -16,7 +16,6 @@ 
 #include <generated/utsrelease.h>
 #include <linux/string_helpers.h>
 #include <linux/devcoredump.h>
-#include <linux/reset.h>
 #include <linux/sched/task.h>
 
 /*
@@ -933,9 +932,6 @@  int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
 	if (IS_ERR(gpu->gpu_cx))
 		gpu->gpu_cx = NULL;
 
-	gpu->cx_collapse = devm_reset_control_get_optional_exclusive(&pdev->dev,
-			"cx_collapse");
-
 	gpu->pdev = pdev;
 	platform_set_drvdata(pdev, &gpu->adreno_smmu);
 
diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h
index 651786bc55e5..fa9e34d02c91 100644
--- a/drivers/gpu/drm/msm/msm_gpu.h
+++ b/drivers/gpu/drm/msm/msm_gpu.h
@@ -13,7 +13,6 @@ 
 #include <linux/interconnect.h>
 #include <linux/pm_opp.h>
 #include <linux/regulator/consumer.h>
-#include <linux/reset.h>
 
 #include "msm_drv.h"
 #include "msm_fence.h"
@@ -282,9 +281,6 @@  struct msm_gpu {
 	bool hw_apriv;
 
 	struct thermal_cooling_device *cooling;
-
-	/* To poll for cx gdsc collapse during gpu recovery */
-	struct reset_control *cx_collapse;
 };
 
 static inline struct msm_gpu *dev_to_gpu(struct device *dev)