drm/amd/powerplay: implement pwm1_enable hwmon interface for SMU11 (v2)

1, set get_pwm1_enable and set_pwm1_enable functions to call
smu_get_fan_control_mode and smu_set_fan_control_mode for SMU11
2, implement set_fan_control_mode function

v2: add return value in set_fan_control_mode function
Signed-off-by: Chengming Gui <Jack.Gui@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

@@ -1382,11 +1382,14 @@ static ssize_t amdgpu_hwmon_get_pwm1_enable(struct device *dev,
 {
 	struct amdgpu_device *adev = dev_get_drvdata(dev);
 	u32 pwm_mode = 0;
+	if (is_support_sw_smu(adev)) {
+		pwm_mode = smu_get_fan_control_mode(&adev->smu);
+	} else {
+		if (!adev->powerplay.pp_funcs->get_fan_control_mode)
+			return -EINVAL;
 
-	if (!adev->powerplay.pp_funcs->get_fan_control_mode)
-		return -EINVAL;
-
-	pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
+		pwm_mode = amdgpu_dpm_get_fan_control_mode(adev);
+	}
 
 	return sprintf(buf, "%i\n", pwm_mode);
 }
@@ -1405,14 +1408,22 @@ static ssize_t amdgpu_hwmon_set_pwm1_enable(struct device *dev,
 	     (adev->ddev->switch_power_state != DRM_SWITCH_POWER_ON))
 		return -EINVAL;
 
-	if (!adev->powerplay.pp_funcs->set_fan_control_mode)
-		return -EINVAL;
+	if (is_support_sw_smu(adev)) {
+		err = kstrtoint(buf, 10, &value);
+		if (err)
+			return err;
 
-	err = kstrtoint(buf, 10, &value);
-	if (err)
-		return err;
+		smu_set_fan_control_mode(&adev->smu, value);
+	} else {
+		if (!adev->powerplay.pp_funcs->set_fan_control_mode)
+			return -EINVAL;
+
+		err = kstrtoint(buf, 10, &value);
+		if (err)
+			return err;
 
-	amdgpu_dpm_set_fan_control_mode(adev, value);
+		amdgpu_dpm_set_fan_control_mode(adev, value);
+	}
 
 	return count;
 }

drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h

@@ -533,6 +533,7 @@ struct smu_funcs
 	uint32_t (*get_mclk)(struct smu_context *smu, bool low);
 	int (*get_current_rpm)(struct smu_context *smu, uint32_t *speed);
 	uint32_t (*get_fan_control_mode)(struct smu_context *smu);
+	int (*set_fan_control_mode)(struct smu_context *smu, uint32_t mode);
 	int (*get_fan_speed_percent)(struct smu_context *smu, uint32_t *speed);
 	int (*set_fan_speed_percent)(struct smu_context *smu, uint32_t speed);
 };
@@ -669,6 +670,8 @@ struct smu_funcs
 	((smu)->ppt_funcs->set_cpu_power_state ? (smu)->ppt_funcs->set_cpu_power_state((smu)) : 0)
 #define smu_get_fan_control_mode(smu) \
 	((smu)->funcs->get_fan_control_mode ? (smu)->funcs->get_fan_control_mode((smu)) : 0)
+#define smu_set_fan_control_mode(smu, value) \
+	((smu)->funcs->set_fan_control_mode ? (smu)->funcs->set_fan_control_mode((smu), (value)) : 0)
 #define smu_get_fan_speed_percent(smu, speed) \
 	((smu)->funcs->get_fan_speed_percent ? (smu)->funcs->get_fan_speed_percent((smu), (speed)) : 0)
 #define smu_set_fan_speed_percent(smu, speed) \

drivers/gpu/drm/amd/powerplay/smu_v11_0.c

@@ -1834,6 +1834,36 @@ smu_v11_0_set_fan_speed_percent(struct smu_context *smu, uint32_t speed)
 	return smu_v11_0_set_fan_static_mode(smu, FDO_PWM_MODE_STATIC);
 }
 
+static int
+smu_v11_0_set_fan_control_mode(struct smu_context *smu,
+			       uint32_t mode)
+{
+	int ret = 0;
+	bool start = 1;
+	bool stop  = 0;
+
+	switch (mode) {
+	case AMD_FAN_CTRL_NONE:
+		ret = smu_v11_0_set_fan_speed_percent(smu, 100);
+		break;
+	case AMD_FAN_CTRL_MANUAL:
+		ret = smu_v11_0_smc_fan_control(smu, stop);
+		break;
+	case AMD_FAN_CTRL_AUTO:
+		ret = smu_v11_0_smc_fan_control(smu, start);
+		break;
+	default:
+		break;
+	}
+
+	if (ret) {
+		pr_err("[%s]Set fan control mode failed!");
+		return -EINVAL;
+	}
+
+	return ret;
+}
+
 static const struct smu_funcs smu_v11_0_funcs = {
 	.init_microcode = smu_v11_0_init_microcode,
 	.load_microcode = smu_v11_0_load_microcode,
@@ -1886,6 +1916,7 @@ static const struct smu_funcs smu_v11_0_funcs = {
 	.dpm_set_vce_enable = smu_v11_0_dpm_set_vce_enable,
 	.get_current_rpm = smu_v11_0_get_current_rpm,
 	.get_fan_control_mode = smu_v11_0_get_fan_control_mode,
+	.set_fan_control_mode = smu_v11_0_set_fan_control_mode,
 	.get_fan_speed_percent = smu_v11_0_get_fan_speed_percent,
 	.set_fan_speed_percent = smu_v11_0_set_fan_speed_percent,
 };