drm/amdgpu/pm: document pp_power_profile_mode (6b2576f5) · Commits · 戴 / test

drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c

+20 −0

Original line number	Diff line number	Diff line
		@@ -780,6 +780,26 @@ fail:
		return count;
		}

		/**
		* DOC: pp_power_profile_mode
		*
		* The amdgpu driver provides a sysfs API for adjusting the heuristics
		* related to switching between power levels in a power state. The file
		* pp_power_profile_mode is used for this.
		*
		* Reading this file outputs a list of all of the predefined power profiles
		* and the relevant heuristics settings for that profile.
		*
		* To select a profile or create a custom profile, first select manual using
		* power_dpm_force_performance_level. Writing the number of a predefined
		* profile to pp_power_profile_mode will enable those heuristics. To
		* create a custom set of heuristics, write a string of numbers to the file
		* starting with the number of the custom profile along with a setting
		* for each heuristic parameter. Due to differences across asic families
		* the heuristic parameters vary from family to family.
		*
		*/

		static ssize_t amdgpu_get_pp_power_profile_mode(struct device *dev,
		struct device_attribute *attr,
		char *buf)