drm/amdgpu/swsmu: implement voltage metrics for RENOIR

Grab the data from the SMU metrics table.

Reviewed-by: Evan Quan <evan.quan@amd.com>
Acked-by: Nirmoy Das <nirmoy.das@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c
index 186929c..ac81f2f 100644 (file)
--- a/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu12/renoir_ppt.c
@@ -616,6 +616,27 @@ static int renoir_get_current_activity_percent(struct smu_context *smu,
        return 0;
 }
 
+static int renoir_get_vddc(struct smu_context *smu, uint32_t *value,
+                          unsigned int index)
+{
+       int ret = 0;
+       SmuMetrics_t metrics;
+
+       if (index >= 2)
+               return -EINVAL;
+
+       if (!value)
+               return -EINVAL;
+
+       ret = smu_cmn_get_metrics_table(smu, &metrics, false);
+       if (ret)
+               return ret;
+
+       *value = metrics.Voltage[index];
+
+       return 0;
+}
+
 /**
  * This interface get dpm clock table for dc
  */
@@ -952,6 +973,14 @@ static int renoir_read_sensor(struct smu_context *smu,
                *(uint32_t *)data *= 100;
                *size = 4;
                break;
+       case AMDGPU_PP_SENSOR_VDDGFX:
+               ret = renoir_get_vddc(smu, (uint32_t *)data, 0);
+               *size = 4;
+               break;
+       case AMDGPU_PP_SENSOR_VDDNB:
+               ret = renoir_get_vddc(smu, (uint32_t *)data, 1);
+               *size = 4;
+               break;
        default:
                ret = -EOPNOTSUPP;
                break;