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/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
/*
* Copyright (C) 2019, Fuzhou Rockchip Electronics Co., Ltd
*/
#ifndef __SOC_ROCKCHIP_SYSTEM_MONITOR_H
#define __SOC_ROCKCHIP_SYSTEM_MONITOR_H
enum monitor_dev_type {
MONITOR_TPYE_CPU = 0, /* CPU */
MONITOR_TPYE_DEV, /* GPU, NPU, DMC, and so on */
};
struct volt_adjust_table {
unsigned int min; /* Minimum frequency in MHz */
unsigned int max; /* Maximum frequency in MHz */
int volt; /* Voltage in microvolt */
};
struct temp_freq_table {
int temp; /* millicelsius */
unsigned int freq; /* KHz */
};
/**
* struct temp_opp_table - System monitor device OPP description structure
* @rate: Frequency in hertz
* @volt: Target voltage in microvolt
* @low_temp_volt: Target voltage when low temperature, in microvolt
* @max_volt: Maximum voltage in microvolt
*/
struct temp_opp_table {
unsigned long rate;
unsigned long volt;
unsigned long low_temp_volt;
unsigned long max_volt;
};
/**
* struct monitor_dev_info - structure for a system monitor device
* @dev: Device registered by system monitor
* @devfreq_nb: Notifier block used to notify devfreq object
* that it should reevaluate operable frequencies
* @low_temp_adjust_table: Voltage margin for different OPPs when lowe
* temperature
* @opp_table: Frequency and voltage information of device
* @devp: Device-specific system monitor profile
* @node: Node in monitor_dev_list
* @temp_freq_table: Maximum frequency at different temperature
* @low_limit: Limit maximum frequency when low temperature, in Hz
* @high_limit: Limit maximum frequency when high temperature, in Hz
* @max_volt: Maximum voltage in microvolt
* @low_temp_min_volt: Minimum voltage of OPPs when low temperature, in
* microvolt
* @high_temp_max_volt: Maximum voltage when high temperature, in microvolt
* @wide_temp_limit: Target maximum frequency when low or high temperature,
* in Hz
* @video_4k_freq: Maximum frequency when paly 4k video, in KHz
* @status_limit: Minimum frequency of all status frequency, in KHz
* @freq_table: Optional list of frequencies in descending order
* @max_state: The size of freq_table
* @low_temp: Low temperature trip point, in millicelsius
* @high_temp: High temperature trip point, in millicelsius
* @temp_hysteresis: A low hysteresis value on low_temp, in millicelsius
* @is_low_temp: True if current temperature less than low_temp
* @is_high_temp: True if current temperature greater than high_temp
* @is_low_temp_enabled: True if device node contains low temperature
* configuration
*/
struct monitor_dev_info {
struct device *dev;
struct notifier_block devfreq_nb;
struct volt_adjust_table *low_temp_adjust_table;
struct temp_opp_table *opp_table;
struct monitor_dev_profile *devp;
struct list_head node;
struct temp_freq_table *temp_freq_table;
unsigned long low_limit;
unsigned long high_limit;
unsigned long max_volt;
unsigned long low_temp_min_volt;
unsigned long high_temp_max_volt;
unsigned long wide_temp_limit;
unsigned int video_4k_freq;
unsigned int status_limit;
unsigned long *freq_table;
unsigned int max_state;
int low_temp;
int high_temp;
int temp_hysteresis;
bool is_low_temp;
bool is_high_temp;
bool is_low_temp_enabled;
};
struct monitor_dev_profile {
enum monitor_dev_type type;
void *data;
int (*low_temp_adjust)(struct monitor_dev_info *info, bool is_low);
int (*high_temp_adjust)(struct monitor_dev_info *info, bool is_low);
struct cpumask allowed_cpus;
};
#ifdef CONFIG_ROCKCHIP_SYSTEM_MONITOR
struct monitor_dev_info *
rockchip_system_monitor_register(struct device *dev,
struct monitor_dev_profile *devp);
void rockchip_system_monitor_unregister(struct monitor_dev_info *info);
int rockchip_monitor_cpu_low_temp_adjust(struct monitor_dev_info *info,
bool is_low);
int rockchip_monitor_cpu_high_temp_adjust(struct monitor_dev_info *info,
bool is_high);
int rockchip_monitor_dev_low_temp_adjust(struct monitor_dev_info *info,
bool is_low);
int rockchip_monitor_dev_high_temp_adjust(struct monitor_dev_info *info,
bool is_high);
int rockchip_monitor_suspend_low_temp_adjust(struct monitor_dev_info *info);
int
rockchip_system_monitor_adjust_cdev_state(struct thermal_cooling_device *cdev,
int temp, unsigned long *state);
#else
static inline struct monitor_dev_info *
rockchip_system_monitor_register(struct device *dev,
struct monitor_dev_profile *devp)
{
return ERR_PTR(-ENOTSUPP);
};
static inline void
rockchip_system_monitor_unregister(struct monitor_dev_info *info)
{
}
static inline int
rockchip_monitor_cpu_low_temp_adjust(struct monitor_dev_info *info, bool is_low)
{
return 0;
};
static inline int
rockchip_monitor_cpu_high_temp_adjust(struct monitor_dev_info *info,
bool is_high)
{
return 0;
};
static inline int
rockchip_monitor_dev_low_temp_adjust(struct monitor_dev_info *info, bool is_low)
{
return 0;
};
static inline int
rockchip_monitor_dev_high_temp_adjust(struct monitor_dev_info *info,
bool is_high)
{
return 0;
};
static inline int
rockchip_monitor_suspend_low_temp_adjust(struct monitor_dev_info *info)
{
return 0;
};
static inline int
rockchip_system_monitor_adjust_cdev_state(struct thermal_cooling_device *cdev,
int temp, unsigned long *state)
{
return 0;
}
#endif /* CONFIG_ROCKCHIP_SYSTEM_MONITOR */
#endif
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