[PATCH] drm/amd/powerplay: do proper cleanups on hw_fini

[Quan, Evan]

These are needed for smu_reset support.

Change-Id: If29ede4b99758adb08fd4e16665f44fd893ec99b
Signed-off-by: Evan Quan <evan.quan at amd.com>
---
 drivers/gpu/drm/amd/powerplay/amdgpu_smu.c     | 17 +++++++++++++++++
 drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h |  3 +++
 drivers/gpu/drm/amd/powerplay/smu_v11_0.c      | 10 ++++++++++
 3 files changed, 30 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index d5ee13a78eb7..3cf8d944f890 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -1286,6 +1286,11 @@ static int smu_hw_init(void *handle)
 	return ret;
 }
 
+static int smu_stop_dpms(struct smu_context *smu)
+{
+	return smu_send_smc_msg(smu, SMU_MSG_DisableAllSmuFeatures);
+}
+
 static int smu_hw_fini(void *handle)
 {
 	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
@@ -1298,6 +1303,18 @@ static int smu_hw_fini(void *handle)
 		smu_powergate_vcn(&adev->smu, true);
 	}
 
+	ret = smu_stop_thermal_control(smu);
+	if (ret) {
+		pr_warn("Fail to stop thermal control!\n");
+		return ret;
+	}
+
+	ret = smu_stop_dpms(smu);
+	if (ret) {
+		pr_warn("Fail to stop Dpms!\n");
+		return ret;
+	}
+
 	kfree(table_context->driver_pptable);
 	table_context->driver_pptable = NULL;
 
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index b19224cb6d6d..8e4b0ad24712 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -498,6 +498,7 @@ struct smu_funcs
 	int (*get_current_clk_freq)(struct smu_context *smu, enum smu_clk_type clk_id, uint32_t *value);
 	int (*init_max_sustainable_clocks)(struct smu_context *smu);
 	int (*start_thermal_control)(struct smu_context *smu);
+	int (*stop_thermal_control)(struct smu_context *smu);
 	int (*read_sensor)(struct smu_context *smu, enum amd_pp_sensors sensor,
 			   void *data, uint32_t *size);
 	int (*set_deep_sleep_dcefclk)(struct smu_context *smu, uint32_t clk);
@@ -647,6 +648,8 @@ struct smu_funcs
 	((smu)->ppt_funcs->set_thermal_fan_table ? (smu)->ppt_funcs->set_thermal_fan_table((smu)) : 0)
 #define smu_start_thermal_control(smu) \
 	((smu)->funcs->start_thermal_control? (smu)->funcs->start_thermal_control((smu)) : 0)
+#define smu_stop_thermal_control(smu) \
+	((smu)->funcs->stop_thermal_control? (smu)->funcs->stop_thermal_control((smu)) : 0)
 #define smu_read_sensor(smu, sensor, data, size) \
 	((smu)->ppt_funcs->read_sensor? (smu)->ppt_funcs->read_sensor((smu), (sensor), (data), (size)) : 0)
 #define smu_smc_read_sensor(smu, sensor, data, size) \
diff --git a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
index db5e94ce54af..1a38af84394e 100644
--- a/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
+++ b/drivers/gpu/drm/amd/powerplay/smu_v11_0.c
@@ -1209,6 +1209,15 @@ static int smu_v11_0_start_thermal_control(struct smu_context *smu)
 	return ret;
 }
 
+static int smu_v11_0_stop_thermal_control(struct smu_context *smu)
+{
+	struct amdgpu_device *adev = smu->adev;
+
+	WREG32_SOC15(THM, 0, mmTHM_THERMAL_INT_ENA, 0);
+
+	return 0;
+}
+
 static uint16_t convert_to_vddc(uint8_t vid)
 {
 	return (uint16_t) ((6200 - (vid * 25)) / SMU11_VOLTAGE_SCALE);
@@ -1783,6 +1792,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.get_current_clk_freq = smu_v11_0_get_current_clk_freq,
 	.init_max_sustainable_clocks = smu_v11_0_init_max_sustainable_clocks,
 	.start_thermal_control = smu_v11_0_start_thermal_control,
+	.stop_thermal_control = smu_v11_0_stop_thermal_control,
 	.read_sensor = smu_v11_0_read_sensor,
 	.set_deep_sleep_dcefclk = smu_v11_0_set_deep_sleep_dcefclk,
 	.display_clock_voltage_request = smu_v11_0_display_clock_voltage_request,
-- 
2.23.0