[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);
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);
#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(-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) {}

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