linux/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c

/*
 * Copyright 2018 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 "vega20_thermal.h"
#include "vega20_hwmgr.h"
#include "vega20_smumgr.h"
#include "vega20_ppsmc.h"
#include "vega20_inc.h"
#include "soc15_common.h"
#include "pp_debug.h"

static int vega20_disable_fan_control_feature(struct pp_hwmgr *hwmgr)
{ … }

int vega20_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
{ … }

static int vega20_enable_fan_control_feature(struct pp_hwmgr *hwmgr)
{ … }

int vega20_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
{ … }

static int vega20_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
{ … }

static int vega20_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
{ … }

int vega20_fan_ctrl_get_fan_speed_pwm(struct pp_hwmgr *hwmgr,
		uint32_t *speed)
{ … }

int vega20_fan_ctrl_set_fan_speed_pwm(struct pp_hwmgr *hwmgr,
		uint32_t speed)
{ … }

int vega20_fan_ctrl_get_fan_speed_info(struct pp_hwmgr *hwmgr,
		struct phm_fan_speed_info *fan_speed_info)
{ … }

int vega20_fan_ctrl_get_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t *speed)
{ … }

int vega20_fan_ctrl_set_fan_speed_rpm(struct pp_hwmgr *hwmgr, uint32_t speed)
{ … }

/**
 * vega20_thermal_get_temperature - Reads the remote temperature from the SIslands thermal controller.
 *
 * @hwmgr: The address of the hardware manager.
 */
int vega20_thermal_get_temperature(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega20_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 vega20_thermal_set_temperature_range(struct pp_hwmgr *hwmgr,
		struct PP_TemperatureRange *range)
{ … }

/**
 * vega20_thermal_enable_alert - Enable thermal alerts on the RV770 thermal controller.
 *
 * @hwmgr: The address of the hardware manager.
 */
static int vega20_thermal_enable_alert(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega20_thermal_disable_alert - Disable thermal alerts on the RV770 thermal controller.
 * @hwmgr: The address of the hardware manager.
 */
int vega20_thermal_disable_alert(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega20_thermal_stop_thermal_controller - Uninitialize the thermal controller.
 * Currently just disables alerts.
 * @hwmgr: The address of the hardware manager.
 */
int vega20_thermal_stop_thermal_controller(struct pp_hwmgr *hwmgr)
{ … }

/**
 * vega20_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 vega20_thermal_setup_fan_table(struct pp_hwmgr *hwmgr)
{ … }

int vega20_start_thermal_controller(struct pp_hwmgr *hwmgr,
				struct PP_TemperatureRange *range)
{
	int ret = 0;

	if (range == NULL)
		return -EINVAL;

	ret = vega20_thermal_set_temperature_range(hwmgr, range);
	if (ret)
		return ret;

	ret = vega20_thermal_enable_alert(hwmgr);
	if (ret)
		return ret;

	ret = vega20_thermal_setup_fan_table(hwmgr);

	return ret;
};