[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);
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);
#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 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);
}

static inline int dev_pm_opp_set_supported_hw(struct device *dev,
					      const u32 *versions,
					      unsigned int count)
{
	return -EINVAL;
}

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 -EINVAL;
}

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 -EINVAL;
}

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

#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);
int dev_pm_opp_set_sharing_cpus(struct device *cpu_dev, cpumask_var_t cpumask);
#else
static inline int dev_pm_opp_of_add_table(struct device *dev)
{
	return -EINVAL;
}

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 -ENOSYS;
}

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 -ENOSYS;
}

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