[PATCH 1/4] drm/amd/powerplay: implement interface to retrieve gpu temperature for renoir

[Xiaomeng Hou]

add sensor interface of get gpu temperature for debugfs.

Change-Id: I2499b6652fad6d5d776b6ed4cd5157636583ed39
Signed-off-by: Xiaomeng Hou <Xiaomeng.Hou at amd.com>
---
 drivers/gpu/drm/amd/powerplay/renoir_ppt.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
index 3788047bd704..3f6f0ebf1fbe 100644
--- a/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
+++ b/drivers/gpu/drm/amd/powerplay/renoir_ppt.c
@@ -429,6 +429,24 @@ static int renoir_get_gpu_power(struct smu_context *smu, uint32_t *value)
 	return 0;
 }
 
+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)
@@ -787,6 +805,10 @@ static int renoir_read_sensor(struct smu_context *smu,
 		ret = renoir_get_gpu_power(smu, (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);
 	}
-- 
2.24.0