mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-20 23:38:21 +07:00
dfbe4678d7
This patch adds infrastructure to manage multiple regulators and updates
the only user (cpufreq-dt) of dev_pm_opp_set{put}_regulator().
This is preparatory work for adding full support for devices with
multiple regulators.
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
254 lines
6.8 KiB
C
254 lines
6.8 KiB
C
/*
|
|
* Generic OPP Interface
|
|
*
|
|
* Copyright (C) 2009-2010 Texas Instruments Incorporated.
|
|
* Nishanth Menon
|
|
* Romit Dasgupta
|
|
* Kevin Hilman
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#ifndef __LINUX_OPP_H__
|
|
#define __LINUX_OPP_H__
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/notifier.h>
|
|
|
|
struct dev_pm_opp;
|
|
struct device;
|
|
struct opp_table;
|
|
|
|
enum dev_pm_opp_event {
|
|
OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
|
|
};
|
|
|
|
/**
|
|
* struct dev_pm_opp_supply - Power supply voltage/current values
|
|
* @u_volt: Target voltage in microvolts corresponding to this OPP
|
|
* @u_volt_min: Minimum voltage in microvolts corresponding to this OPP
|
|
* @u_volt_max: Maximum voltage in microvolts corresponding to this OPP
|
|
* @u_amp: Maximum current drawn by the device in microamperes
|
|
*
|
|
* This structure stores the voltage/current values for a single power supply.
|
|
*/
|
|
struct dev_pm_opp_supply {
|
|
unsigned long u_volt;
|
|
unsigned long u_volt_min;
|
|
unsigned long u_volt_max;
|
|
unsigned long u_amp;
|
|
};
|
|
|
|
#if defined(CONFIG_PM_OPP)
|
|
|
|
unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
|
|
|
|
unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
|
|
|
|
bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
|
|
|
|
int dev_pm_opp_get_opp_count(struct device *dev);
|
|
unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
|
|
unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev);
|
|
unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev);
|
|
struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev);
|
|
|
|
struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
|
|
unsigned long freq,
|
|
bool available);
|
|
|
|
struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
|
|
unsigned long *freq);
|
|
|
|
struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
|
|
unsigned long *freq);
|
|
|
|
int dev_pm_opp_add(struct device *dev, unsigned long freq,
|
|
unsigned long u_volt);
|
|
void dev_pm_opp_remove(struct device *dev, unsigned long freq);
|
|
|
|
int dev_pm_opp_enable(struct device *dev, unsigned long freq);
|
|
|
|
int dev_pm_opp_disable(struct device *dev, unsigned long freq);
|
|
|
|
struct srcu_notifier_head *dev_pm_opp_get_notifier(struct device *dev);
|
|
int dev_pm_opp_set_supported_hw(struct device *dev, const u32 *versions,
|
|
unsigned int count);
|
|
void dev_pm_opp_put_supported_hw(struct device *dev);
|
|
int dev_pm_opp_set_prop_name(struct device *dev, const char *name);
|
|
void dev_pm_opp_put_prop_name(struct device *dev);
|
|
struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count);
|
|
void dev_pm_opp_put_regulators(struct opp_table *opp_table);
|
|
int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
|
|
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask);
|
|
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
|
|
void dev_pm_opp_remove_table(struct device *dev);
|
|
void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask);
|
|
#else
|
|
static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
static inline int dev_pm_opp_get_opp_count(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct dev_pm_opp *dev_pm_opp_get_suspend_opp(struct device *dev)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct dev_pm_opp *dev_pm_opp_find_freq_exact(struct device *dev,
|
|
unsigned long freq, bool available)
|
|
{
|
|
return ERR_PTR(-ENOTSUPP);
|
|
}
|
|
|
|
static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
|
|
unsigned long *freq)
|
|
{
|
|
return ERR_PTR(-ENOTSUPP);
|
|
}
|
|
|
|
static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
|
|
unsigned long *freq)
|
|
{
|
|
return ERR_PTR(-ENOTSUPP);
|
|
}
|
|
|
|
static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
|
|
unsigned long u_volt)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
|
|
{
|
|
}
|
|
|
|
static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
|
|
struct device *dev)
|
|
{
|
|
return ERR_PTR(-ENOTSUPP);
|
|
}
|
|
|
|
static inline int dev_pm_opp_set_supported_hw(struct device *dev,
|
|
const u32 *versions,
|
|
unsigned int count)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_supported_hw(struct device *dev) {}
|
|
|
|
static inline int dev_pm_opp_set_prop_name(struct device *dev, const char *name)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
|
|
|
|
static inline struct opp_table *dev_pm_opp_set_regulators(struct device *dev, const char * const names[], unsigned int count)
|
|
{
|
|
return ERR_PTR(-ENOTSUPP);
|
|
}
|
|
|
|
static inline void dev_pm_opp_put_regulators(struct opp_table *opp_table) {}
|
|
|
|
static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const struct cpumask *cpumask)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
|
|
{
|
|
return -EINVAL;
|
|
}
|
|
|
|
static inline void dev_pm_opp_remove_table(struct device *dev)
|
|
{
|
|
}
|
|
|
|
static inline void dev_pm_opp_cpumask_remove_table(const struct cpumask *cpumask)
|
|
{
|
|
}
|
|
|
|
#endif /* CONFIG_PM_OPP */
|
|
|
|
#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
|
|
int dev_pm_opp_of_add_table(struct device *dev);
|
|
void dev_pm_opp_of_remove_table(struct device *dev);
|
|
int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
|
|
void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
|
|
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask);
|
|
#else
|
|
static inline int dev_pm_opp_of_add_table(struct device *dev)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline void dev_pm_opp_of_remove_table(struct device *dev)
|
|
{
|
|
}
|
|
|
|
static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
|
|
{
|
|
}
|
|
|
|
static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
|
|
{
|
|
return -ENOTSUPP;
|
|
}
|
|
#endif
|
|
|
|
#endif /* __LINUX_OPP_H__ */
|