/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
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/*
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* Copyright (C) 2019, Fuzhou Rockchip Electronics Co., Ltd
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*/
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#ifndef __SOC_ROCKCHIP_SYSTEM_MONITOR_H
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#define __SOC_ROCKCHIP_SYSTEM_MONITOR_H
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#include <linux/pm_opp.h>
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#include <linux/pm_qos.h>
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#include <linux/regulator/consumer.h>
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enum monitor_dev_type {
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MONITOR_TYPE_CPU = 0, /* CPU */
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MONITOR_TYPE_DEV, /* GPU, NPU, DMC, and so on */
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};
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enum system_monitor_event_type {
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SYSTEM_MONITOR_CHANGE_TEMP = 0,
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};
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struct system_monitor_event_data {
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int temp;
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};
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struct volt_adjust_table {
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unsigned int min; /* Minimum frequency in MHz */
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unsigned int max; /* Maximum frequency in MHz */
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int volt; /* Voltage in microvolt */
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};
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struct temp_freq_table {
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int temp; /* millicelsius */
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unsigned int freq; /* KHz */
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};
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/**
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* struct temp_opp_table - System monitor device OPP description structure
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* @rate: Frequency in hertz
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* @volt: Target voltage in microvolt
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* @mem_volt: Target voltage for memory in microvolt
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* @low_temp_volt: Target voltage when low temperature, in microvolt
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* @low_temp_mem_volt: Target voltage for memory when low temperature,
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* in microvolt
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* @max_volt: Maximum voltage in microvolt
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* @max_mem_volt: Maximum voltage for memory in microvolt
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*/
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struct temp_opp_table {
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unsigned long rate;
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unsigned long volt;
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unsigned long mem_volt;
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unsigned long low_temp_volt;
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unsigned long low_temp_mem_volt;
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unsigned long max_volt;
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unsigned long max_mem_volt;
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};
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/**
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* struct monitor_dev_info - structure for a system monitor device
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* @dev: Device registered by system monitor
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* @low_temp_adjust_table: Voltage margin for different OPPs when lowe
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* temperature
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* @opp_table: Frequency and voltage information of device
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* @devp: Device-specific system monitor profile
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* @node: Node in monitor_dev_list
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* @high_limit_table: Limit maximum frequency at different temperature,
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* but the frequency is also changed by thermal framework.
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* @volt_adjust_mutex: A mutex to protect changing voltage.
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* @max_temp_freq_req: CPU maximum frequency constraint changed according
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* to temperature.
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* @min_sta_freq_req: CPU minimum frequency constraint changed according
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* to system status.
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* @max_sta_freq_req: CPU maximum frequency constraint changed according
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* to system status.
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* @dev_max_freq_req: Devices maximum frequency constraint changed according
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* to temperature.
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* @low_limit: Limit maximum frequency when low temperature, in Hz
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* @high_limit: Limit maximum frequency when high temperature, in Hz
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* @max_volt: Maximum voltage in microvolt
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* @low_temp_min_volt: Minimum voltage of OPPs when low temperature, in
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* microvolt
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* @high_temp_max_volt: Maximum voltage when high temperature, in microvolt
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* @wide_temp_limit: Target maximum frequency when low or high temperature,
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* in Hz
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* @video_4k_freq: Maximum frequency when paly 4k video, in KHz
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* @reboot_freq: Limit maximum and minimum frequency when reboot, in KHz
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* @status_min_limit: Minimum frequency of some status frequency, in KHz
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* @status_max_limit: Minimum frequency of all status frequency, in KHz
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* @low_temp: Low temperature trip point, in millicelsius
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* @high_temp: High temperature trip point, in millicelsius
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* @temp_hysteresis: A low hysteresis value on low_temp, in millicelsius
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* @is_low_temp: True if current temperature less than low_temp
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* @is_high_temp: True if current temperature greater than high_temp
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* @is_low_temp_enabled: True if device node contains low temperature
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* configuration
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* @is_status_freq_fixed: True if enter into some status
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*/
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struct monitor_dev_info {
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struct device *dev;
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struct volt_adjust_table *low_temp_adjust_table;
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struct temp_opp_table *opp_table;
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struct monitor_dev_profile *devp;
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struct list_head node;
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struct temp_freq_table *high_limit_table;
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struct mutex volt_adjust_mutex;
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struct freq_qos_request max_temp_freq_req;
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struct freq_qos_request min_sta_freq_req;
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struct freq_qos_request max_sta_freq_req;
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struct dev_pm_qos_request dev_max_freq_req;
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struct regulator *early_reg;
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struct regulator **regulators;
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struct dev_pm_set_opp_data *set_opp_data;
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struct clk *clk;
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unsigned long low_limit;
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unsigned long high_limit;
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unsigned long max_volt;
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unsigned long low_temp_min_volt;
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unsigned long high_temp_max_volt;
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unsigned int video_4k_freq;
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unsigned int reboot_freq;
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unsigned int init_freq;
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unsigned int status_min_limit;
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unsigned int status_max_limit;
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unsigned int early_min_volt;
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unsigned int regulator_count;
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int low_temp;
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int high_temp;
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int temp_hysteresis;
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bool is_low_temp;
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bool is_high_temp;
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bool is_low_temp_enabled;
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};
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struct monitor_dev_profile {
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enum monitor_dev_type type;
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void *data;
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bool is_checked;
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int (*low_temp_adjust)(struct monitor_dev_info *info, bool is_low);
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int (*high_temp_adjust)(struct monitor_dev_info *info, bool is_low);
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int (*update_volt)(struct monitor_dev_info *info);
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int (*set_opp)(struct dev_pm_set_opp_data *data);
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struct cpumask allowed_cpus;
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struct rockchip_opp_info *opp_info;
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};
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#if IS_REACHABLE(CONFIG_ROCKCHIP_SYSTEM_MONITOR)
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struct monitor_dev_info *
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rockchip_system_monitor_register(struct device *dev,
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struct monitor_dev_profile *devp);
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void rockchip_system_monitor_unregister(struct monitor_dev_info *info);
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int rockchip_monitor_cpu_low_temp_adjust(struct monitor_dev_info *info,
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bool is_low);
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int rockchip_monitor_cpu_high_temp_adjust(struct monitor_dev_info *info,
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bool is_high);
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void rockchip_monitor_volt_adjust_lock(struct monitor_dev_info *info);
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void rockchip_monitor_volt_adjust_unlock(struct monitor_dev_info *info);
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int rockchip_monitor_check_rate_volt(struct monitor_dev_info *info);
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int rockchip_monitor_dev_low_temp_adjust(struct monitor_dev_info *info,
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bool is_low);
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int rockchip_monitor_dev_high_temp_adjust(struct monitor_dev_info *info,
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bool is_high);
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int rockchip_monitor_suspend_low_temp_adjust(int cpu);
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int rockchip_system_monitor_register_notifier(struct notifier_block *nb);
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void rockchip_system_monitor_unregister_notifier(struct notifier_block *nb);
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#else
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static inline struct monitor_dev_info *
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rockchip_system_monitor_register(struct device *dev,
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struct monitor_dev_profile *devp)
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{
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return ERR_PTR(-ENOTSUPP);
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};
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static inline void
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rockchip_system_monitor_unregister(struct monitor_dev_info *info)
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{
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}
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static inline int
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rockchip_monitor_cpu_low_temp_adjust(struct monitor_dev_info *info, bool is_low)
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{
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return 0;
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};
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static inline int
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rockchip_monitor_cpu_high_temp_adjust(struct monitor_dev_info *info,
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bool is_high)
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{
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return 0;
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};
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static inline void
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rockchip_monitor_volt_adjust_lock(struct monitor_dev_info *info)
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{
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}
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static inline void
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rockchip_monitor_volt_adjust_unlock(struct monitor_dev_info *info)
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{
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}
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static inline int
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rockchip_monitor_check_rate_volt(struct monitor_dev_info *info)
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{
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return 0;
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}
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static inline int
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rockchip_monitor_dev_low_temp_adjust(struct monitor_dev_info *info, bool is_low)
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{
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return 0;
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};
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static inline int
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rockchip_monitor_dev_high_temp_adjust(struct monitor_dev_info *info,
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bool is_high)
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{
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return 0;
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};
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static inline int rockchip_monitor_suspend_low_temp_adjust(int cpu)
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{
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return 0;
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};
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static inline int
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rockchip_system_monitor_register_notifier(struct notifier_block *nb)
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{
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return 0;
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};
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static inline void
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rockchip_system_monitor_unregister_notifier(struct notifier_block *nb)
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{
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};
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#endif /* CONFIG_ROCKCHIP_SYSTEM_MONITOR */
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#endif
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