[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 struct cpumask *cpumask);
int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, 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 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 struct cpumask *cpumask)
{
	return -ENOTSUPP;
}

static inline int dev_pm_opp_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpumask)
{
	return -EINVAL;
}

#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__ */
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);
ddbb74bc AB	68	int dev_pm_opp_set_sharing_cpus(struct device cpu_dev, const struct cpumask cpumask);
ddbb74bc AB	69	int dev_pm_opp_get_sharing_cpus(struct device cpu_dev, struct cpumask cpumask);
e1f60b29	70	#else
47d43ba7	71	static inline unsigned long dev_pm_opp_get_voltage(struct dev_pm_opp *opp)
e1f60b29 NM	72	{
	73	return 0;
	74	}
	75
47d43ba7	76	static inline unsigned long dev_pm_opp_get_freq(struct dev_pm_opp *opp)
e1f60b29 NM	77	{
	78	return 0;
	79	}
	80
19445b25 BZ	81	static inline bool dev_pm_opp_is_turbo(struct dev_pm_opp *opp)
	82	{
	83	return false;
	84	}
	85
5d4879cd	86	static inline int dev_pm_opp_get_opp_count(struct device *dev)
e1f60b29 NM	87	{
	88	return 0;
	89	}
	90
3ca9bb33 VK	91	static inline unsigned long dev_pm_opp_get_max_clock_latency(struct device *dev)
	92	{
	93	return 0;
	94	}
	95
655c9df9 VK	96	static inline unsigned long dev_pm_opp_get_max_volt_latency(struct device *dev)
	97	{
	98	return 0;
	99	}
	100
21743447 VK	101	static inline unsigned long dev_pm_opp_get_max_transition_latency(struct device *dev)
	102	{
	103	return 0;
	104	}
	105
4eafbd15 BZ	106	static inline struct dev_pm_opp dev_pm_opp_get_suspend_opp(struct device dev)
	107	{
	108	return NULL;
	109	}
	110
47d43ba7	111	static inline struct dev_pm_opp dev_pm_opp_find_freq_exact(struct device dev,
e1f60b29 NM	112	unsigned long freq, bool available)
e1f60b29 NM	113	{
d708b384	114	return ERR_PTR(-ENOTSUPP);
e1f60b29 NM	115	}
e1f60b29 NM	116
47d43ba7	117	static inline struct dev_pm_opp dev_pm_opp_find_freq_floor(struct device dev,
e1f60b29 NM	118	unsigned long *freq)
e1f60b29 NM	119	{
d708b384	120	return ERR_PTR(-ENOTSUPP);
e1f60b29 NM	121	}
e1f60b29 NM	122
47d43ba7	123	static inline struct dev_pm_opp dev_pm_opp_find_freq_ceil(struct device dev,
e1f60b29 NM	124	unsigned long *freq)
e1f60b29 NM	125	{
d708b384	126	return ERR_PTR(-ENOTSUPP);
e1f60b29 NM	127	}
e1f60b29 NM	128
5d4879cd	129	static inline int dev_pm_opp_add(struct device *dev, unsigned long freq,
e1f60b29 NM	130	unsigned long u_volt)
e1f60b29 NM	131	{
d708b384	132	return -ENOTSUPP;
e1f60b29 NM	133	}
e1f60b29 NM	134
129eec55 VK	135	static inline void dev_pm_opp_remove(struct device *dev, unsigned long freq)
	136	{
	137	}
	138
5d4879cd	139	static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
e1f60b29 NM	140	{
	141	return 0;
	142	}
	143
5d4879cd	144	static inline int dev_pm_opp_disable(struct device *dev, unsigned long freq)
e1f60b29 NM	145	{
	146	return 0;
	147	}
03ca370f	148
5d4879cd NM	149	static inline struct srcu_notifier_head *dev_pm_opp_get_notifier(
5d4879cd NM	150	struct device *dev)
03ca370f	151	{
d708b384	152	return ERR_PTR(-ENOTSUPP);
03ca370f	153	}
7de36b0a VK	154
	155	static inline int dev_pm_opp_set_supported_hw(struct device *dev,
	156	const u32 *versions,
	157	unsigned int count)
	158	{
d708b384	159	return -ENOTSUPP;
7de36b0a VK	160	}
	161
	162	static inline void dev_pm_opp_put_supported_hw(struct device *dev) {}
	163
01fb4d3c VK	164	static inline int dev_pm_opp_set_prop_name(struct device dev, const char name)
01fb4d3c VK	165	{
d708b384	166	return -ENOTSUPP;
01fb4d3c VK	167	}
	168
	169	static inline void dev_pm_opp_put_prop_name(struct device *dev) {}
	170
9f8ea969 VK	171	static inline int dev_pm_opp_set_regulator(struct device dev, const char name)
9f8ea969 VK	172	{
d708b384	173	return -ENOTSUPP;
9f8ea969 VK	174	}
	175
	176	static inline void dev_pm_opp_put_regulator(struct device *dev) {}
	177
6a0712f6 VK	178	static inline int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
6a0712f6 VK	179	{
d708b384	180	return -ENOTSUPP;
6a0712f6 VK	181	}
6a0712f6 VK	182
ddbb74bc	183	static inline int dev_pm_opp_set_sharing_cpus(struct device cpu_dev, const struct cpumask cpumask)
642aa8ce	184	{
d708b384	185	return -ENOTSUPP;
642aa8ce VK	186	}
642aa8ce VK	187
ddbb74bc	188	static inline int dev_pm_opp_get_sharing_cpus(struct device cpu_dev, struct cpumask cpumask)
6f707daa VK	189	{
	190	return -EINVAL;
	191	}
	192
a96d69d1	193	#endif /* CONFIG_PM_OPP */
e1f60b29	194
d6561bb2	195	#if defined(CONFIG_PM_OPP) && defined(CONFIG_OF)
8f8d37b2 VK	196	int dev_pm_opp_of_add_table(struct device *dev);
8f8d37b2 VK	197	void dev_pm_opp_of_remove_table(struct device *dev);
ddbb74bc AB	198	int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask);
	199	void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask);
	200	int dev_pm_opp_of_get_sharing_cpus(struct device cpu_dev, struct cpumask cpumask);
d6561bb2	201	#else
8f8d37b2	202	static inline int dev_pm_opp_of_add_table(struct device *dev)
d6561bb2	203	{
d708b384	204	return -ENOTSUPP;
d6561bb2	205	}
129eec55	206
8f8d37b2	207	static inline void dev_pm_opp_of_remove_table(struct device *dev)
129eec55 VK	208	{
129eec55 VK	209	}
8d4d4e98	210
ddbb74bc	211	static inline int dev_pm_opp_of_cpumask_add_table(const struct cpumask *cpumask)
8d4d4e98	212	{
d708b384	213	return -ENOTSUPP;
8d4d4e98 VK	214	}
8d4d4e98 VK	215
ddbb74bc	216	static inline void dev_pm_opp_of_cpumask_remove_table(const struct cpumask *cpumask)
8d4d4e98 VK	217	{
	218	}
	219
ddbb74bc	220	static inline int dev_pm_opp_of_get_sharing_cpus(struct device cpu_dev, struct cpumask cpumask)
8d4d4e98	221	{
d708b384	222	return -ENOTSUPP;
8d4d4e98	223	}
d6561bb2 SG	224	#endif
d6561bb2 SG	225
e1f60b29	226	#endif /* __LINUX_OPP_H__ */