habanalabs: remove ASIC functions of clock gating

Now that clock gating is permanently disabled in GAUDI, no need for
the ASIC functions of setting and disabling clock gating, as this
was a unique scenario in GAUDI.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>

drivers/misc/habanalabs/common/device.c

@@ -644,9 +644,6 @@ int hl_device_set_debug_mode(struct hl_device *hdev, struct hl_ctx *ctx, bool en
 
 		hdev->in_debug = 0;
 
-		if (!hdev->reset_info.hard_reset_pending)
-			hdev->asic_funcs->set_clock_gating(hdev);
-
 		goto out;
 	}
 
@@ -657,7 +654,6 @@ int hl_device_set_debug_mode(struct hl_device *hdev, struct hl_ctx *ctx, bool en
 		goto out;
 	}
 
-	hdev->asic_funcs->disable_clock_gating(hdev);
 	hdev->in_debug = 1;
 
 out:

drivers/misc/habanalabs/common/habanalabs.h

@@ -1164,9 +1164,6 @@ struct fw_load_mgr {
  * @mmu_invalidate_cache_range: flush specific MMU STLB cache lines with
  *                              ASID-VA-size mask.
  * @send_heartbeat: send is-alive packet to CPU-CP and verify response.
- * @set_clock_gating: enable/disable clock gating per engine according to
- *                    clock gating mask in hdev
- * @disable_clock_gating: disable clock gating completely
  * @debug_coresight: perform certain actions on Coresight for debugging.
  * @is_device_idle: return true if device is idle, false otherwise.
  * @non_hard_reset_late_init: perform certain actions needed after a reset which is not hard-reset
@@ -1300,8 +1297,6 @@ struct hl_asic_funcs {
 	int (*mmu_invalidate_cache_range)(struct hl_device *hdev, bool is_hard,
 				u32 flags, u32 asid, u64 va, u64 size);
 	int (*send_heartbeat)(struct hl_device *hdev);
-	void (*set_clock_gating)(struct hl_device *hdev);
-	void (*disable_clock_gating)(struct hl_device *hdev);
 	int (*debug_coresight)(struct hl_device *hdev, struct hl_ctx *ctx, void *data);
 	bool (*is_device_idle)(struct hl_device *hdev, u64 *mask_arr,
 					u8 mask_len, struct seq_file *s);

drivers/misc/habanalabs/gaudi/gaudiP.h

@@ -312,8 +312,6 @@ struct gaudi_internal_qman_info {
  * struct gaudi_device - ASIC specific manage structure.
  * @cpucp_info_get: get information on device from CPU-CP
  * @hw_queues_lock: protects the H/W queues from concurrent access.
- * @clk_gate_mutex: protects code areas that require clock gating to be disabled
- *                  temporarily
  * @internal_qmans: Internal QMANs information. The array size is larger than
  *                  the actual number of internal queues because they are not in
  *                  consecutive order.
@@ -336,7 +334,6 @@ struct gaudi_device {
 
 	/* TODO: remove hw_queues_lock after moving to scheduler code */
 	spinlock_t			hw_queues_lock;
-	struct mutex			clk_gate_mutex;
 
 	struct gaudi_internal_qman_info	internal_qmans[GAUDI_QUEUE_ID_SIZE];
 

drivers/misc/habanalabs/goya/goya.c

@@ -5391,16 +5391,6 @@ int goya_cpucp_info_get(struct hl_device *hdev)
 	return 0;
 }
 
-static void goya_set_clock_gating(struct hl_device *hdev)
-{
-	/* clock gating not supported in Goya */
-}
-
-static void goya_disable_clock_gating(struct hl_device *hdev)
-{
-	/* clock gating not supported in Goya */
-}
-
 static bool goya_is_device_idle(struct hl_device *hdev, u64 *mask_arr,
 					u8 mask_len, struct seq_file *s)
 {
@@ -5734,8 +5724,6 @@ static const struct hl_asic_funcs goya_funcs = {
 	.mmu_invalidate_cache = goya_mmu_invalidate_cache,
 	.mmu_invalidate_cache_range = goya_mmu_invalidate_cache_range,
 	.send_heartbeat = goya_send_heartbeat,
-	.set_clock_gating = goya_set_clock_gating,
-	.disable_clock_gating = goya_disable_clock_gating,
 	.debug_coresight = goya_debug_coresight,
 	.is_device_idle = goya_is_device_idle,
 	.non_hard_reset_late_init = goya_non_hard_reset_late_init,