sysfs file for adjusting power level heuristics. Signed-off-by: Alex Deucher <alexander.deucher at amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c index 3f1715b1a547..9d52618a5c4c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c @@ -781,6 +781,26 @@ static ssize_t amdgpu_set_pp_mclk_od(struct device *dev, 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) -- 2.13.6
