[mirror_ubuntu-bionic-kernel.git] / include / linux / pm_opp.h

/*
 * 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;

enum dev_pm_opp_event {
	OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
};

#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);
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);
#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 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(-EINVAL);
}

static inline struct dev_pm_opp *dev_pm_opp_find_freq_floor(struct device *dev,
					unsigned long *freq)
{
	return ERR_PTR(-EINVAL);
}

static inline struct dev_pm_opp *dev_pm_opp_find_freq_ceil(struct device *dev,
					unsigned long *freq)
{
	return ERR_PTR(-EINVAL);
}

static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
					unsigned long u_volt)
{
	return -EINVAL;
}

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(-EINVAL);
}
#endif		/* CONFIG_PM_OPP */

#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
int of_init_opp_table(struct device *dev);
void of_free_opp_table(struct device *dev);
int of_cpumask_init_opp_table(cpumask_var_t cpumask);
void of_cpumask_free_opp_table(cpumask_var_t cpumask);
int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask);
int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask);
#else
static inline int of_init_opp_table(struct device *dev)
{
	return -EINVAL;
}

static inline void of_free_opp_table(struct device *dev)
{
}

static inline int of_cpumask_init_opp_table(cpumask_var_t cpumask)
{
	return -ENOSYS;
}

static inline void of_cpumask_free_opp_table(cpumask_var_t cpumask)
{
}

static inline int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
{
	return -ENOSYS;
}

static inline int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
{
	return -ENOSYS;
}
#endif

#endif		/* __LINUX_OPP_H__ */
Commit	Line	Data
e1f60b29 NM	1	/*
	2	* Generic OPP Interface
	3	*
	4	* Copyright (C) 2009-2010 Texas Instruments Incorporated.
	5	* Nishanth Menon
	6	* Romit Dasgupta
	7	* Kevin Hilman
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13
	14	#ifndef __LINUX_OPP_H__
	15	#define __LINUX_OPP_H__
	16
	17	#include <linux/err.h>
03ca370f	18	#include <linux/notifier.h>
e1f60b29	19
47d43ba7	20	struct dev_pm_opp;
313162d0	21	struct device;
e1f60b29	22
47d43ba7	23	enum dev_pm_opp_event {
129eec55	24	OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
03ca370f MH	25	};
03ca370f MH	26
e1f60b29 NM	27	#if defined(CONFIG_PM_OPP)
e1f60b29 NM	28
47d43ba7	29	unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp);
e1f60b29	30
47d43ba7	31	unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp);
e1f60b29	32
19445b25 BZ	33	bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp);
19445b25 BZ	34
5d4879cd	35	int dev_pm_opp_get_opp_count(struct device *dev);
3ca9bb33	36	unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev);
4eafbd15	37	struct dev_pm_opp dev_pm_opp_get_suspend_opp(struct device dev);
e1f60b29	38
47d43ba7 NM	39	struct dev_pm_opp dev_pm_opp_find_freq_exact(struct device dev,
	40	unsigned long freq,
	41	bool available);
e1f60b29	42
47d43ba7 NM	43	struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev,
47d43ba7 NM	44	unsigned long *freq);
e1f60b29	45
47d43ba7 NM	46	struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev,
47d43ba7 NM	47	unsigned long *freq);
e1f60b29	48
5d4879cd NM	49	int dev_pm_opp_add(struct device *dev, unsigned long freq,
5d4879cd NM	50	unsigned long u_volt);
129eec55	51	void dev_pm_opp_remove(struct device *dev, unsigned long freq);
e1f60b29	52
5d4879cd	53	int dev_pm_opp_enable(struct device *dev, unsigned long freq);
e1f60b29	54
5d4879cd	55	int dev_pm_opp_disable(struct device *dev, unsigned long freq);
e1f60b29	56
5d4879cd	57	struct srcu_notifier_head dev_pm_opp_get_notifier(struct device dev);
e1f60b29	58	#else
47d43ba7	59	static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
e1f60b29 NM	60	{
	61	return 0;
	62	}
	63
47d43ba7	64	static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
e1f60b29 NM	65	{
	66	return 0;
	67	}
	68
19445b25 BZ	69	static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
	70	{
	71	return false;
	72	}
	73
5d4879cd	74	static inline int dev_pm_opp_get_opp_count(struct device *dev)
e1f60b29 NM	75	{
	76	return 0;
	77	}
	78
3ca9bb33 VK	79	static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
	80	{
	81	return 0;
	82	}
	83
4eafbd15 BZ	84	static inline struct dev_pm_opp dev_pm_opp_get_suspend_opp(struct device dev)
	85	{
	86	return NULL;
	87	}
	88
47d43ba7	89	static inline struct dev_pm_opp dev_pm_opp_find_freq_exact(struct device dev,
e1f60b29 NM	90	unsigned long freq, bool available)
	91	{
	92	return ERR_PTR(-EINVAL);
	93	}
	94
47d43ba7	95	static inline struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev,
e1f60b29 NM	96	unsigned long *freq)
	97	{
	98	return ERR_PTR(-EINVAL);
	99	}
	100
47d43ba7	101	static inline struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev,
e1f60b29 NM	102	unsigned long *freq)
	103	{
	104	return ERR_PTR(-EINVAL);
	105	}
	106
5d4879cd	107	static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
e1f60b29 NM	108	unsigned long u_volt)
	109	{
	110	return -EINVAL;
	111	}
	112
129eec55 VK	113	static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
	114	{
	115	}
	116
5d4879cd	117	static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
e1f60b29 NM	118	{
	119	return 0;
	120	}
	121
5d4879cd	122	static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
e1f60b29 NM	123	{
	124	return 0;
	125	}
03ca370f	126
5d4879cd NM	127	static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
5d4879cd NM	128	struct device *dev)
03ca370f MH	129	{
	130	return ERR_PTR(-EINVAL);
	131	}
a96d69d1	132	#endif /* CONFIG_PM_OPP */
e1f60b29	133
d6561bb2 SG	134	#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
d6561bb2 SG	135	int of_init_opp_table(struct device *dev);
129eec55	136	void of_free_opp_table(struct device *dev);
8d4d4e98 VK	137	int of_cpumask_init_opp_table(cpumask_var_t cpumask);
	138	void of_cpumask_free_opp_table(cpumask_var_t cpumask);
	139	int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask);
	140	int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask);
d6561bb2 SG	141	#else
	142	static inline int of_init_opp_table(struct device *dev)
	143	{
	144	return -EINVAL;
	145	}
129eec55 VK	146
	147	static inline void of_free_opp_table(struct device *dev)
	148	{
	149	}
8d4d4e98 VK	150
	151	static inline int of_cpumask_init_opp_table(cpumask_var_t cpumask)
	152	{
	153	return -ENOSYS;
	154	}
	155
	156	static inline void of_cpumask_free_opp_table(cpumask_var_t cpumask)
	157	{
	158	}
	159
	160	static inline int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
	161	{
	162	return -ENOSYS;
	163	}
	164
	165	static inline int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
	166	{
	167	return -ENOSYS;
	168	}
d6561bb2 SG	169	#endif
d6561bb2 SG	170
e1f60b29	171	#endif /* __LINUX_OPP_H__ */