drm/amd/powerplay: implement interface to retrieve gpu temperature for renoir

add sensor interface of get gpu temperature for debugfs.

Signed-off-by: Xiaomeng Hou <Xiaomeng.Hou@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
index b076589..9befa50 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
@@ -412,6 +412,24 @@ static int renoir_unforce_dpm_levels(struct smu_context *smu) {
        return ret;
 }
 
+static int renoir_get_gpu_temperature(struct smu_context *smu, uint32_t *value)
+{
+       int ret = 0;
+       SmuMetrics_t metrics;
+
+       if (!value)
+               return -EINVAL;
+
+       ret = renoir_get_metrics_table(smu, &metrics);
+       if (ret)
+               return ret;
+
+       *value = (metrics.GfxTemperature / 100) *
+               SMU_TEMPERATURE_UNITS_PER_CENTIGRADES;
+
+       return 0;
+}
+
 static int renoir_get_current_activity_percent(struct smu_context *smu,
                                               enum amd_pp_sensors sensor,
                                               uint32_t *value)
@@ -766,6 +784,10 @@ static int renoir_read_sensor(struct smu_context *smu,
                ret = renoir_get_current_activity_percent(smu, sensor, (uint32_t *)data);
                *size = 4;
                break;
+       case AMDGPU_PP_SENSOR_GPU_TEMP:
+               ret = renoir_get_gpu_temperature(smu, (uint32_t *)data);
+               *size = 4;
+               break;
        default:
                ret = smu_v12_0_read_sensor(smu, sensor, data, size);
        }