From 33e281ff3ff0daeeef640e856085857d9a5d0e4b Mon Sep 17 00:00:00 2001
From: Evan Quan <evan.quan@amd.com>
Date: Mon, 29 Nov 2021 13:15:57 +0800
Subject: drm/amd/pm: drop unneeded vcn/jpeg_gate_lock
Git-commit: 974d5ef0dd9d251dd4571e30d5e79e7e4940d424
Patch-mainline: v5.18-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225

As those related APIs are already protected by adev->pm.mutex.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c     | 63 ++++---------------
 drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h |  2 -
 2 files changed, 11 insertions(+), 54 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
index eaaa5b033d46..8ac87733d211 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c
@@ -158,8 +158,8 @@ static u32 smu_get_sclk(void *handle, bool low)
 	return clk_freq * 100;
 }
 
-static int smu_dpm_set_vcn_enable_locked(struct smu_context *smu,
-					 bool enable)
+static int smu_dpm_set_vcn_enable(struct smu_context *smu,
+				  bool enable)
 {
 	struct smu_power_context *smu_power = &smu->smu_power;
 	struct smu_power_gate *power_gate = &smu_power->power_gate;
@@ -178,24 +178,8 @@ static int smu_dpm_set_vcn_enable_locked(struct smu_context *smu,
 	return ret;
 }
 
-static int smu_dpm_set_vcn_enable(struct smu_context *smu,
-				  bool enable)
-{
-	struct smu_power_context *smu_power = &smu->smu_power;
-	struct smu_power_gate *power_gate = &smu_power->power_gate;
-	int ret = 0;
-
-	mutex_lock(&power_gate->vcn_gate_lock);
-
-	ret = smu_dpm_set_vcn_enable_locked(smu, enable);
-
-	mutex_unlock(&power_gate->vcn_gate_lock);
-
-	return ret;
-}
-
-static int smu_dpm_set_jpeg_enable_locked(struct smu_context *smu,
-					  bool enable)
+static int smu_dpm_set_jpeg_enable(struct smu_context *smu,
+				   bool enable)
 {
 	struct smu_power_context *smu_power = &smu->smu_power;
 	struct smu_power_gate *power_gate = &smu_power->power_gate;
@@ -214,22 +198,6 @@ static int smu_dpm_set_jpeg_enable_locked(struct smu_context *smu,
 	return ret;
 }
 
-static int smu_dpm_set_jpeg_enable(struct smu_context *smu,
-				   bool enable)
-{
-	struct smu_power_context *smu_power = &smu->smu_power;
-	struct smu_power_gate *power_gate = &smu_power->power_gate;
-	int ret = 0;
-
-	mutex_lock(&power_gate->jpeg_gate_lock);
-
-	ret = smu_dpm_set_jpeg_enable_locked(smu, enable);
-
-	mutex_unlock(&power_gate->jpeg_gate_lock);
-
-	return ret;
-}
-
 /**
  * smu_dpm_set_power_gate - power gate/ungate the specific IP block
  *
@@ -620,32 +588,25 @@ static int smu_set_default_dpm_table(struct smu_context *smu)
 	if (!smu->ppt_funcs->set_default_dpm_table)
 		return 0;
 
-	mutex_lock(&power_gate->vcn_gate_lock);
-	mutex_lock(&power_gate->jpeg_gate_lock);
-
 	vcn_gate = atomic_read(&power_gate->vcn_gated);
 	jpeg_gate = atomic_read(&power_gate->jpeg_gated);
 
-	ret = smu_dpm_set_vcn_enable_locked(smu, true);
+	ret = smu_dpm_set_vcn_enable(smu, true);
 	if (ret)
-		goto err0_out;
+		return ret;
 
-	ret = smu_dpm_set_jpeg_enable_locked(smu, true);
+	ret = smu_dpm_set_jpeg_enable(smu, true);
 	if (ret)
-		goto err1_out;
+		goto err_out;
 
 	ret = smu->ppt_funcs->set_default_dpm_table(smu);
 	if (ret)
 		dev_err(smu->adev->dev,
 			"Failed to setup default dpm clock tables!\n");
 
-	smu_dpm_set_jpeg_enable_locked(smu, !jpeg_gate);
-err1_out:
-	smu_dpm_set_vcn_enable_locked(smu, !vcn_gate);
-err0_out:
-	mutex_unlock(&power_gate->jpeg_gate_lock);
-	mutex_unlock(&power_gate->vcn_gate_lock);
-
+	smu_dpm_set_jpeg_enable(smu, !jpeg_gate);
+err_out:
+	smu_dpm_set_vcn_enable(smu, !vcn_gate);
 	return ret;
 }
 
@@ -1007,8 +968,6 @@ static int smu_sw_init(void *handle)
 
 	atomic_set(&smu->smu_power.power_gate.vcn_gated, 1);
 	atomic_set(&smu->smu_power.power_gate.jpeg_gated, 1);
-	mutex_init(&smu->smu_power.power_gate.vcn_gate_lock);
-	mutex_init(&smu->smu_power.power_gate.jpeg_gate_lock);
 
 	smu->workload_mask = 1 << smu->workload_prority[PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT];
 	smu->workload_prority[PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT] = 0;
diff --git a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
index 00760f3c6da5..c3efe4fea5e0 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/swsmu/inc/amdgpu_smu.h
@@ -376,8 +376,6 @@ struct smu_power_gate {
 	bool vce_gated;
 	atomic_t vcn_gated;
 	atomic_t jpeg_gated;
-	struct mutex vcn_gate_lock;
-	struct mutex jpeg_gate_lock;
 };
 
 struct smu_power_context {
-- 
2.38.1