[deliverable/linux.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);
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);
#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);
}

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) {}

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