[mirror_ubuntu-zesty-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_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_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);
e1f60b29	37
47d43ba7 NM	38	struct dev_pm_opp dev_pm_opp_find_freq_exact(struct device dev,
	39	unsigned long freq,
	40	bool available);
e1f60b29	41
47d43ba7 NM	42	struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev,
47d43ba7 NM	43	unsigned long *freq);
e1f60b29	44
47d43ba7 NM	45	struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev,
47d43ba7 NM	46	unsigned long *freq);
e1f60b29	47
5d4879cd NM	48	int dev_pm_opp_add(struct device *dev, unsigned long freq,
5d4879cd NM	49	unsigned long u_volt);
129eec55	50	void dev_pm_opp_remove(struct device *dev, unsigned long freq);
e1f60b29	51
5d4879cd	52	int dev_pm_opp_enable(struct device *dev, unsigned long freq);
e1f60b29	53
5d4879cd	54	int dev_pm_opp_disable(struct device *dev, unsigned long freq);
e1f60b29	55
5d4879cd	56	struct srcu_notifier_head dev_pm_opp_get_notifier(struct device dev);
e1f60b29	57	#else
47d43ba7	58	static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
e1f60b29 NM	59	{
	60	return 0;
	61	}
	62
47d43ba7	63	static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
e1f60b29 NM	64	{
	65	return 0;
	66	}
	67
19445b25 BZ	68	static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
	69	{
	70	return false;
	71	}
	72
5d4879cd	73	static inline int dev_pm_opp_get_opp_count(struct device *dev)
e1f60b29 NM	74	{
	75	return 0;
	76	}
	77
3ca9bb33 VK	78	static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
	79	{
	80	return 0;
	81	}
	82
47d43ba7	83	static inline struct dev_pm_opp dev_pm_opp_find_freq_exact(struct device dev,
e1f60b29 NM	84	unsigned long freq, bool available)
	85	{
	86	return ERR_PTR(-EINVAL);
	87	}
	88
47d43ba7	89	static inline struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev,
e1f60b29 NM	90	unsigned long *freq)
	91	{
	92	return ERR_PTR(-EINVAL);
	93	}
	94
47d43ba7	95	static inline struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev,
e1f60b29 NM	96	unsigned long *freq)
	97	{
	98	return ERR_PTR(-EINVAL);
	99	}
	100
5d4879cd	101	static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
e1f60b29 NM	102	unsigned long u_volt)
	103	{
	104	return -EINVAL;
	105	}
	106
129eec55 VK	107	static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
	108	{
	109	}
	110
5d4879cd	111	static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
e1f60b29 NM	112	{
	113	return 0;
	114	}
	115
5d4879cd	116	static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
e1f60b29 NM	117	{
	118	return 0;
	119	}
03ca370f	120
5d4879cd NM	121	static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
5d4879cd NM	122	struct device *dev)
03ca370f MH	123	{
	124	return ERR_PTR(-EINVAL);
	125	}
a96d69d1	126	#endif /* CONFIG_PM_OPP */
e1f60b29	127
d6561bb2 SG	128	#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
d6561bb2 SG	129	int of_init_opp_table(struct device *dev);
129eec55	130	void of_free_opp_table(struct device *dev);
8d4d4e98 VK	131	int of_cpumask_init_opp_table(cpumask_var_t cpumask);
	132	void of_cpumask_free_opp_table(cpumask_var_t cpumask);
	133	int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask);
	134	int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask);
d6561bb2 SG	135	#else
	136	static inline int of_init_opp_table(struct device *dev)
	137	{
	138	return -EINVAL;
	139	}
129eec55 VK	140
	141	static inline void of_free_opp_table(struct device *dev)
	142	{
	143	}
8d4d4e98 VK	144
	145	static inline int of_cpumask_init_opp_table(cpumask_var_t cpumask)
	146	{
	147	return -ENOSYS;
	148	}
	149
	150	static inline void of_cpumask_free_opp_table(cpumask_var_t cpumask)
	151	{
	152	}
	153
	154	static inline int of_get_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
	155	{
	156	return -ENOSYS;
	157	}
	158
	159	static inline int set_cpus_sharing_opps(struct device *cpu_dev, cpumask_var_t cpumask)
	160	{
	161	return -ENOSYS;
	162	}
d6561bb2 SG	163	#endif
d6561bb2 SG	164
e1f60b29	165	#endif /* __LINUX_OPP_H__ */