[mirror_ubuntu-zesty-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);
#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) {}

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