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charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" Test: * Temporary insertion into Documentation/gpu/amdgpu.rst ------------START------------ Test Documentation ================== smu_get_power_limit ------------------- .. kernel-doc:: drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c :identifiers: smu_get_power_limit .. kernel-doc:: drivers/gpu/drm/amd/include/kgd_pp_interface.h :identifiers: pp_power_limit_level -------------END------------- Signed-off-by: Darren Powell --- .../gpu/drm/amd/include/kgd_pp_interface.h | 21 +++++++++++++++++++ drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 10 +++++++++ 2 files changed, 31 insertions(+) diff --git a/drivers/gpu/drm/amd/include/kgd_pp_interface.h b/drivers/gpu/drm/amd/include/kgd_pp_interface.h index 606c89eb206f..e86eecdf6a76 100644 --- a/drivers/gpu/drm/amd/include/kgd_pp_interface.h +++ b/drivers/gpu/drm/amd/include/kgd_pp_interface.h @@ -192,6 +192,27 @@ enum pp_df_cstate { DF_CSTATE_ALLOW, }; +/** + * enum pp_power_limit_level - Used to query the power limits + * + * 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. + * + * PP_PWR_LIMIT_* manages the configurable, thermally significant + * moving average of APU power (default ~5000 ms). + * PP_PWR_LIMIT_FAST_* manages the ~10 ms moving average of APU power, + * where supported. + * + * @PP_PWR_LIMIT_MIN: Minimum Power Limit + * @PP_PWR_LIMIT_CURRENT: Current Power Limit (Long Window) + * @PP_PWR_LIMIT_DEFAULT: Default Power Limit (Long Window) + * @PP_PWR_LIMIT_MAX: Maximum Power Limit (Long Window) + * @PP_PWR_LIMIT_FAST_CURRENT: Current Power Limit (Short Window) + * @PP_PWR_LIMIT_FAST_DEFAULT: Default Power Limit (Short Window) + * @PP_PWR_LIMIT_FAST_MAX: Maximum Power Limit (Short Window) + */ enum pp_power_limit_level { PP_PWR_LIMIT_MIN = -1, diff --git a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c index 2815e932580b..57f416732265 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c +++ b/drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c @@ -2166,6 +2166,16 @@ 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 + * @pwr_limit_level: &pp_power_limit_level which power limit to return + * + * Return: 0 on success, <0 on error + * + */ int smu_get_power_limit(void *handle, uint32_t *limit, enum pp_power_limit_level pwr_limit_level) { -- 2.25.1 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx