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Commit 2377cd94 authored by Rex Zhu's avatar Rex Zhu Committed by Alex Deucher
Browse files

drm/amd/powerplay: enable/disable auto thermal throttle for tonga. 



Signed-off-by: default avatarRex Zhu <Rex.Zhu@amd.com>
Acked-by: default avatarFlora Cui <Flora.Cui@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 74b0b157

drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c

+82 −0
Original line number Diff line number Diff line
@@ -203,6 +203,7 @@ uint8_t tonga_get_voltage_id(pp_atomctrl_voltage_table *voltage_table, 
	return i - 1;

}





/**

 * @brief PhwTonga_GetVoltageOrder

 *  Returns index of requested voltage record in lookup(table)
@@ -4327,6 +4328,79 @@ int tonga_program_voting_clients(struct pp_hwmgr *hwmgr) 
	return 0;

}



static void tonga_set_dpm_event_sources(struct pp_hwmgr *hwmgr, uint32_t sources)

{

	bool protection;

	enum DPM_EVENT_SRC src;



	switch (sources) {

	default:

		printk(KERN_ERR "Unknown throttling event sources.");

		/* fall through */

	case 0:

		protection = false;

		/* src is unused */

		break;

	case (1 << PHM_AutoThrottleSource_Thermal):

		protection = true;

		src = DPM_EVENT_SRC_DIGITAL;

		break;

	case (1 << PHM_AutoThrottleSource_External):

		protection = true;

		src = DPM_EVENT_SRC_EXTERNAL;

		break;

	case (1 << PHM_AutoThrottleSource_External) |

			(1 << PHM_AutoThrottleSource_Thermal):

		protection = true;

		src = DPM_EVENT_SRC_DIGITAL_OR_EXTERNAL;

		break;

	}

	/* Order matters - don't enable thermal protection for the wrong source. */

	if (protection) {

		PHM_WRITE_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_CTRL,

				DPM_EVENT_SRC, src);

		PHM_WRITE_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, GENERAL_PWRMGT,

				THERMAL_PROTECTION_DIS,

				!phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,

						PHM_PlatformCaps_ThermalController));

	} else

		PHM_WRITE_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, GENERAL_PWRMGT,

				THERMAL_PROTECTION_DIS, 1);

}



static int tonga_enable_auto_throttle_source(struct pp_hwmgr *hwmgr,

		PHM_AutoThrottleSource source)

{

	struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);



	if (!(data->active_auto_throttle_sources & (1 << source))) {

		data->active_auto_throttle_sources |= 1 << source;

		tonga_set_dpm_event_sources(hwmgr, data->active_auto_throttle_sources);

	}

	return 0;

}



static int tonga_enable_thermal_auto_throttle(struct pp_hwmgr *hwmgr)

{

	return tonga_enable_auto_throttle_source(hwmgr, PHM_AutoThrottleSource_Thermal);

}



static int tonga_disable_auto_throttle_source(struct pp_hwmgr *hwmgr,

		PHM_AutoThrottleSource source)

{

	struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);



	if (data->active_auto_throttle_sources & (1 << source)) {

		data->active_auto_throttle_sources &= ~(1 << source);

		tonga_set_dpm_event_sources(hwmgr, data->active_auto_throttle_sources);

	}

	return 0;

}



static int tonga_disable_thermal_auto_throttle(struct pp_hwmgr *hwmgr)

{

	return tonga_disable_auto_throttle_source(hwmgr, PHM_AutoThrottleSource_Thermal);

}



int tonga_enable_dpm_tasks(struct pp_hwmgr *hwmgr)

{
@@ -4410,6 +4484,10 @@ int tonga_enable_dpm_tasks(struct pp_hwmgr *hwmgr) 
	PP_ASSERT_WITH_CODE((tmp_result == 0),

			"Failed to power control set level!", result = tmp_result);



	tmp_result = tonga_enable_thermal_auto_throttle(hwmgr);

	PP_ASSERT_WITH_CODE((0 == tmp_result),

			"Failed to enable thermal auto throttle!", result = tmp_result);



	return result;

}
@@ -4421,6 +4499,10 @@ int tonga_disable_dpm_tasks(struct pp_hwmgr *hwmgr) 
	PP_ASSERT_WITH_CODE((0 == tmp_result),

		"SMC is still running!", return 0);



	tmp_result = tonga_disable_thermal_auto_throttle(hwmgr);

	PP_ASSERT_WITH_CODE((tmp_result == 0),

			"Failed to disable thermal auto throttle!", result = tmp_result);



	tmp_result = tonga_stop_dpm(hwmgr);

	PP_ASSERT_WITH_CODE((0 == tmp_result),

		"Failed to stop DPM!", result = tmp_result);