vega12_thermal.c | Explore in Territory

/*
 * Copyright 2017 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include "vega12_thermal.h"
#include "vega12_hwmgr.h"
#include "vega12_smumgr.h"
#include "vega12_ppsmc.h"
#include "vega12_inc.h"
#include "soc15_common.h"
#include "pp_debug.h"

static int vega12_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
{ … }

int vega12_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
		struct phm_fan_speed_info *fan_speed_info)
{ … }

int vega12_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
{ … }

/**
 * vega12_enable_fan_control_feature -Enables the SMC Fan Control Feature.
 *
 * @hwmgr: the address of the powerplay hardware manager.
 * Return:   0 on success. -1 otherwise.
 */
static int vega12_enable_fan_control_feature(struct pp_hwmgr *hwmgr)
{ … }

static int vega12_disable_fan_control_feature(struct pp_hwmgr *hwmgr)
{ … }

int vega12_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
{ … }


int vega12_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega12_fan_ctrl_reset_fan_speed_to_default - Reset Fan Speed to default.
 * @hwmgr:  the address of the powerplay hardware manager.
 * Exception Always succeeds.
 */
int vega12_fan_ctrl_reset_fan_speed_to_default(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega12_thermal_get_temperature - Reads the remote temperature from the SIslands thermal controller.
 *
 * @hwmgr: The address of the hardware manager.
 */
int vega12_thermal_get_temperature(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega12_thermal_set_temperature_range - Set the requested temperature range
 *                                        for high and low alert signals
 *
 * @hwmgr: The address of the hardware manager.
 * @range: Temperature range to be programmed for
 *           high and low alert signals
 * Exception: PP_Result_BadInput if the input data is not valid.
 */
static int vega12_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
		struct PP_TemperatureRange *range)
{ … }

/**
 * vega12_thermal_enable_alert - Enable thermal alerts on the RV770 thermal controller.
 *
 * @hwmgr: The address of the hardware manager.
 */
static int vega12_thermal_enable_alert(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega12_thermal_disable_alert - Disable thermal alerts on the RV770 thermal controller.
 * @hwmgr: The address of the hardware manager.
 */
int vega12_thermal_disable_alert(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega12_thermal_stop_thermal_controller - Uninitialize the thermal controller.
 * Currently just disables alerts.
 * @hwmgr: The address of the hardware manager.
 */
int vega12_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega12_thermal_setup_fan_table - Set up the fan table to control the fan using the SMC.
 * @hwmgr:  the address of the powerplay hardware manager.
 */
static int vega12_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega12_thermal_start_smc_fan_control - Start the fan control on the SMC.
 * @hwmgr:  the address of the powerplay hardware manager.
 * Return:  result from set temperature range routine
 */
static int vega12_thermal_start_smc_fan_control(struct pp_hwmgr *hwmgr)
{ … }


int vega12_start_thermal_controller(struct pp_hwmgr *hwmgr,
				struct PP_TemperatureRange *range)
{
	int ret = 0;

	if (range == NULL)
		return -EINVAL;

	ret = vega12_thermal_set_temperature_range(hwmgr, range);
	if (ret)
		return -EINVAL;

	vega12_thermal_enable_alert(hwmgr);
	/* We should restrict performance levels to low before we halt the SMC.
	 * On the other hand we are still in boot state when we do this
	 * so it would be pointless.
	 * If this assumption changes we have to revisit this table.
	 */
	ret = vega12_thermal_setup_fan_table(hwmgr);
	if (ret)
		return -EINVAL;

	vega12_thermal_start_smc_fan_control(hwmgr);

	return 0;
};
linux/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega12_thermal.c
