[DO NOT MERGE ANYWHERE] Revert "mali_pixel: Implement SLC partition ref counting"

Revert submission 2753879-gpu-slcv2-gs201

Reason for revert: Prebuild did not land before cutoff

Reverted changes: /q/submissionid:2753879-gpu-slcv2-gs201

Bug: 329447972
Change-Id: I13716375afbe5be1ae04eb059ed24e8780e503cd

2 files changed, 5 insertions, 52 deletions

diff --git a/mali_kbase/platform/pixel/mali_kbase_config_platform.h b/mali_kbase/platform/pixel/mali_kbase_config_platform.h
index 47b1318..06b76ea 100644
--- a/mali_kbase/platform/pixel/mali_kbase_config_platform.h
+++ b/mali_kbase/platform/pixel/mali_kbase_config_platform.h
@@ -428,14 +428,12 @@ struct pixel_context {
 /**
  * struct pixel_platform_data - Per kbase_context Pixel specific platform data
  *
- * @kctx:     Handle to the parent kctx
- * @stats:    Tracks the dvfs metrics for the UID associated with this context
- * @slc_vote: Tracks whether this context is voting for slc
+ * @kctx:  Handle to the parent kctx
+ * @stats: Tracks the dvfs metrics for the UID associated with this context
  */
 struct pixel_platform_data {
 	struct kbase_context *kctx;
 	struct gpu_dvfs_metrics_uid_stats* stats;
-	int slc_vote;
 };
 
 #endif /* _KBASE_CONFIG_PLATFORM_H_ */
diff --git a/mali_kbase/platform/pixel/pixel_gpu_slc.c b/mali_kbase/platform/pixel/pixel_gpu_slc.c
index e8aae75..8e46be1 100644
--- a/mali_kbase/platform/pixel/pixel_gpu_slc.c
+++ b/mali_kbase/platform/pixel/pixel_gpu_slc.c
@@ -17,37 +17,6 @@
 #include "mali_kbase_config_platform.h"
 #include "pixel_gpu_slc.h"
 
-#include <uapi/gpu/arm/midgard/platform/pixel/pixel_memory_group_manager.h>
-
-/**
- * enum slc_vote_state - Whether a context is voting for SLC
- */
-enum slc_vote_state {
-	/** @IDLE: Idle, not voting for SLC */
-	IDLE   = 0,
-	/** @VOTING: Active, voting for SLC */
-	VOTING = 1,
-};
-
-/**
- * transition() - Try to transition from one value to another
- *
- * @v:   Value to transition
- * @old: Starting state to transition from
- * @new: Destination state to transition to
- *
- * Return: Whether the transition was successful
- */
-static bool transition(int *v, int old, int new)
-{
-	bool const cond = *v == old;
-
-	if (cond)
-		*v = new;
-
-	return cond;
-}
-
 /**
  * gpu_pixel_handle_buffer_liveness_update_ioctl() - See gpu_slc_liveness_update
  *
@@ -88,11 +57,7 @@ int gpu_slc_kctx_init(struct kbase_context *kctx)
  */
 void gpu_slc_kctx_term(struct kbase_context *kctx)
 {
-	struct pixel_platform_data *pd = kctx->platform_data;
-
-	/* Contexts can be terminated without being idled first */
-	if (transition(&pd->slc_vote, VOTING, IDLE))
-		pixel_mgm_slc_dec_refcount(kctx->kbdev->mgm_dev);
+	(void)kctx;
 }
 
 /**
@@ -102,12 +67,7 @@ void gpu_slc_kctx_term(struct kbase_context *kctx)
  */
 void gpu_slc_kctx_active(struct kbase_context *kctx)
 {
-	struct pixel_platform_data *pd = kctx->platform_data;
-
-	lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
-
-	if (transition(&pd->slc_vote, IDLE, VOTING))
-		pixel_mgm_slc_inc_refcount(kctx->kbdev->mgm_dev);
+	(void)kctx;
 }
 
 /**
@@ -117,12 +77,7 @@ void gpu_slc_kctx_active(struct kbase_context *kctx)
  */
 void gpu_slc_kctx_idle(struct kbase_context *kctx)
 {
-	struct pixel_platform_data *pd = kctx->platform_data;
-
-	lockdep_assert_held(&kctx->kbdev->hwaccess_lock);
-
-	if (transition(&pd->slc_vote, VOTING, IDLE))
-		pixel_mgm_slc_dec_refcount(kctx->kbdev->mgm_dev);
+	(void)kctx;
 }
 
 /**