[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);
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);
#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) {}

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