diff options
| -rw-r--r-- | drivers/gpu/drm/amd/include/kgd_pp_interface.h | 28 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 10 |
2 files changed, 38 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h index 62559723bcb9..9f73a2f586d8 100644 --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h @@ -194,6 +194,26 @@ enum pp_df_cstate { DF_CSTATE_ALLOW, }; +/** + * DOC: amdgpu_pp_power + * + * APU power is managed to system-level requirements through the PPT + * (package power tracking) feature. PPT is intended to limit power to the + * requirements of the power source and could be dynamically updated to + * maximize APU performance within the system power budget. + * + * Two types of power measurement can be requested, where supported, with + * :c:type:`enum pp_power_type <pp_power_type>`. + */ + +/** + * enum pp_power_limit_level - Used to query the power limits + * + * @PP_PWR_LIMIT_MIN: Minimum Power Limit + * @PP_PWR_LIMIT_CURRENT: Current Power Limit + * @PP_PWR_LIMIT_DEFAULT: Default Power Limit + * @PP_PWR_LIMIT_MAX: Maximum Power Limit + */ enum pp_power_limit_level { PP_PWR_LIMIT_MIN = -1, @@ -202,6 +222,14 @@ enum pp_power_limit_level PP_PWR_LIMIT_MAX, }; +/** + * enum pp_power_type - Used to specify the type of the requested power + * + * @PP_PWR_TYPE_SUSTAINED: manages the configurable, thermally significant + * moving average of APU power (default ~5000 ms). + * @PP_PWR_TYPE_FAST: manages the ~10 ms moving average of APU power, + * where supported. + */ enum pp_power_type { PP_PWR_TYPE_SUSTAINED, diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index c9b921cd48cd..b4ea8b233240 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -2173,6 +2173,16 @@ static int smu_set_fan_speed_rpm(void *handle, uint32_t speed) return ret; } +/** + * smu_get_power_limit - Request one of the SMU Power Limits + * + * @handle: pointer to smu context + * @limit: requested limit is written back to this variable + * @pp_limit_level: &pp_power_limit_level which limit of the power to return + * @pp_power_type: &pp_power_type type of power + * Return: 0 on success, <0 on error + * + */ int smu_get_power_limit(void *handle, uint32_t *limit, enum pp_power_limit_level pp_limit_level, |