drm/amd/powerplay: implement sensor of get feature mask

add sensor interface of feature mask for debugfs.
this interface is not ip related function, so need move high level
file to implement (amdgpu_smu)
Signed-off-by: Kevin Wang <Kevin1.Wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -29,6 +29,27 @@
 #include "smu_v11_0.h"
 #include "atom.h"
 
+int smu_common_read_sensor(struct smu_context *smu, enum amd_pp_sensors sensor,
+			   void *data, uint32_t *size)
+{
+	int ret = 0;
+
+	switch (sensor) {
+	case AMDGPU_PP_SENSOR_ENABLED_SMC_FEATURES_MASK:
+		ret = smu_feature_get_enabled_mask(smu, (uint32_t *)data, 2);
+		*size = 8;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	if (ret)
+		*size = 0;
+
+	return ret;
+}
+
 int smu_update_table(struct smu_context *smu, uint32_t table_id,
 		     void *table_data, bool drv2smu)
 {

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

@@ -377,6 +377,8 @@ int smu_update_table(struct smu_context *smu, uint32_t table_id,
 		     void *table_data, bool drv2smu);
 bool is_support_sw_smu(struct amdgpu_device *adev);
 int smu_reset(struct smu_context *smu);
+int smu_common_read_sensor(struct smu_context *smu, enum amd_pp_sensors sensor,
+			   void *data, uint32_t *size);
 int smu_sys_get_pp_table(struct smu_context *smu, void **table);
 int smu_sys_set_pp_table(struct smu_context *smu,  void *buf, size_t size);
 

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

@@ -1108,7 +1108,7 @@ static int smu_v11_0_read_sensor(struct smu_context *smu,
 		*size = 4;
 		break;
 	default:
-		ret = -EINVAL;
+		ret = smu_common_read_sensor(smu, sensor, data, size);
 		break;
 	}