[mirror_ubuntu-artful-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);
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);
int dev_pm_opp_set_regulator(struct device *dev, const char *name);
void dev_pm_opp_put_regulator(struct device *dev);
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 cpumask_var_t 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 int dev_pm_opp_set_regulator(struct device *dev, const char *name)
{
	return -ENOTSUPP;
}

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

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 cpumask_var_t cpumask)
{
	return -ENOTSUPP;
}

#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(cpumask_var_t cpumask);
void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask);
int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t 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(cpumask_var_t cpumask)
{
	return -ENOTSUPP;
}

static inline void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
{
}

static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
{
	return -ENOTSUPP;
}
#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);
655c9df9	37	unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev);
21743447	38	unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev);
4eafbd15	39	struct dev_pm_opp dev_pm_opp_get_suspend_opp(struct device dev);
e1f60b29	40
47d43ba7 NM	41	struct dev_pm_opp dev_pm_opp_find_freq_exact(struct device dev,
	42	unsigned long freq,
	43	bool available);
e1f60b29	44
47d43ba7 NM	45	struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev,
47d43ba7 NM	46	unsigned long *freq);
e1f60b29	47
47d43ba7 NM	48	struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev,
47d43ba7 NM	49	unsigned long *freq);
e1f60b29	50
5d4879cd NM	51	int dev_pm_opp_add(struct device *dev, unsigned long freq,
5d4879cd NM	52	unsigned long u_volt);
129eec55	53	void dev_pm_opp_remove(struct device *dev, unsigned long freq);
e1f60b29	54
5d4879cd	55	int dev_pm_opp_enable(struct device *dev, unsigned long freq);
e1f60b29	56
5d4879cd	57	int dev_pm_opp_disable(struct device *dev, unsigned long freq);
e1f60b29	58
5d4879cd	59	struct srcu_notifier_head dev_pm_opp_get_notifier(struct device dev);
7de36b0a VK	60	int dev_pm_opp_set_supported_hw(struct device dev, const u32 versions,
	61	unsigned int count);
	62	void dev_pm_opp_put_supported_hw(struct device *dev);
01fb4d3c VK	63	int dev_pm_opp_set_prop_name(struct device dev, const char name);
01fb4d3c VK	64	void dev_pm_opp_put_prop_name(struct device *dev);
9f8ea969 VK	65	int dev_pm_opp_set_regulator(struct device dev, const char name);
9f8ea969 VK	66	void dev_pm_opp_put_regulator(struct device *dev);
6a0712f6	67	int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq);
dde370b2	68	int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const cpumask_var_t cpumask);
e1f60b29	69	#else
47d43ba7	70	static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
e1f60b29 NM	71	{
	72	return 0;
	73	}
	74
47d43ba7	75	static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
e1f60b29 NM	76	{
	77	return 0;
	78	}
	79
19445b25 BZ	80	static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
	81	{
	82	return false;
	83	}
	84
5d4879cd	85	static inline int dev_pm_opp_get_opp_count(struct device *dev)
e1f60b29 NM	86	{
	87	return 0;
	88	}
	89
3ca9bb33 VK	90	static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
	91	{
	92	return 0;
	93	}
	94
655c9df9 VK	95	static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
	96	{
	97	return 0;
	98	}
	99
21743447 VK	100	static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
	101	{
	102	return 0;
	103	}
	104
4eafbd15 BZ	105	static inline struct dev_pm_opp dev_pm_opp_get_suspend_opp(struct device dev)
	106	{
	107	return NULL;
	108	}
	109
47d43ba7	110	static inline struct dev_pm_opp dev_pm_opp_find_freq_exact(struct device dev,
e1f60b29 NM	111	unsigned long freq, bool available)
e1f60b29 NM	112	{
d708b384	113	return ERR_PTR(-ENOTSUPP);
e1f60b29 NM	114	}
e1f60b29 NM	115
47d43ba7	116	static inline struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev,
e1f60b29 NM	117	unsigned long *freq)
e1f60b29 NM	118	{
d708b384	119	return ERR_PTR(-ENOTSUPP);
e1f60b29 NM	120	}
e1f60b29 NM	121
47d43ba7	122	static inline struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev,
e1f60b29 NM	123	unsigned long *freq)
e1f60b29 NM	124	{
d708b384	125	return ERR_PTR(-ENOTSUPP);
e1f60b29 NM	126	}
e1f60b29 NM	127
5d4879cd	128	static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
e1f60b29 NM	129	unsigned long u_volt)
e1f60b29 NM	130	{
d708b384	131	return -ENOTSUPP;
e1f60b29 NM	132	}
e1f60b29 NM	133
129eec55 VK	134	static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
	135	{
	136	}
	137
5d4879cd	138	static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
e1f60b29 NM	139	{
	140	return 0;
	141	}
	142
5d4879cd	143	static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
e1f60b29 NM	144	{
	145	return 0;
	146	}
03ca370f	147
5d4879cd NM	148	static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
5d4879cd NM	149	struct device *dev)
03ca370f	150	{
d708b384	151	return ERR_PTR(-ENOTSUPP);
03ca370f	152	}
7de36b0a VK	153
	154	static inline int dev_pm_opp_set_supported_hw(struct device *dev,
	155	const u32 *versions,
	156	unsigned int count)
	157	{
d708b384	158	return -ENOTSUPP;
7de36b0a VK	159	}
	160
	161	static inline void dev_pm_opp_put_supported_hw(struct device *dev) {}
	162
01fb4d3c VK	163	static inline int dev_pm_opp_set_prop_name(struct device dev, const char name)
01fb4d3c VK	164	{
d708b384	165	return -ENOTSUPP;
01fb4d3c VK	166	}
	167
	168	static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
	169
9f8ea969 VK	170	static inline int dev_pm_opp_set_regulator(struct device dev, const char name)
9f8ea969 VK	171	{
d708b384	172	return -ENOTSUPP;
9f8ea969 VK	173	}
	174
	175	static inline void dev_pm_opp_put_regulator(struct device *dev) {}
	176
6a0712f6 VK	177	static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
6a0712f6 VK	178	{
d708b384	179	return -ENOTSUPP;
6a0712f6 VK	180	}
6a0712f6 VK	181
dde370b2	182	static inline int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, const cpumask_var_t cpumask)
642aa8ce	183	{
d708b384	184	return -ENOTSUPP;
642aa8ce VK	185	}
642aa8ce VK	186
a96d69d1	187	#endif /* CONFIG_PM_OPP */
e1f60b29	188
d6561bb2	189	#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
8f8d37b2 VK	190	int dev_pm_opp_of_add_table(struct device *dev);
	191	void dev_pm_opp_of_remove_table(struct device *dev);
	192	int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask);
	193	void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask);
	194	int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
d6561bb2	195	#else
8f8d37b2	196	static inline int dev_pm_opp_of_add_table(struct device *dev)
d6561bb2	197	{
d708b384	198	return -ENOTSUPP;
d6561bb2	199	}
129eec55	200
8f8d37b2	201	static inline void dev_pm_opp_of_remove_table(struct device *dev)
129eec55 VK	202	{
129eec55 VK	203	}
8d4d4e98	204
8f8d37b2	205	static inline int dev_pm_opp_of_cpumask_add_table(cpumask_var_t cpumask)
8d4d4e98	206	{
d708b384	207	return -ENOTSUPP;
8d4d4e98 VK	208	}
8d4d4e98 VK	209
8f8d37b2	210	static inline void dev_pm_opp_of_cpumask_remove_table(cpumask_var_t cpumask)
8d4d4e98 VK	211	{
	212	}
	213
8f8d37b2	214	static inline int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask)
8d4d4e98	215	{
d708b384	216	return -ENOTSUPP;
8d4d4e98	217	}
d6561bb2 SG	218	#endif
d6561bb2 SG	219
e1f60b29	220	#endif /* __LINUX_OPP_H__ */