drm/amdgpu/pm: document pp_table
authorAlex Deucher <alexander.deucher@amd.com>
Thu, 19 Apr 2018 19:02:52 +0000 (14:02 -0500)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 15 May 2018 18:43:45 +0000 (13:43 -0500)
This file is for uploading new powerplay tables.

Acked-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

index e33e0f4..9982f1b 100644 (file)
@@ -408,6 +408,17 @@ fail:
        return count;
 }
 
+/**
+ * DOC: pp_table
+ *
+ * The amdgpu driver provides a sysfs API for uploading new powerplay
+ * tables.  The file pp_table is used for this.  Reading the file
+ * will dump the current power play table.  Writing to the file
+ * will attempt to upload a new powerplay table and re-initialize
+ * powerplay using that new table.
+ *
+ */
+
 static ssize_t amdgpu_get_pp_table(struct device *dev,
                struct device_attribute *attr,
                char *buf)