[linux-2.6-block.git] / include / linux / pm_clock.h

/*
 * pm_clock.h - Definitions and headers related to device clocks.
 *
 * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
 *
 * This file is released under the GPLv2.
 */

#ifndef _LINUX_PM_CLOCK_H
#define _LINUX_PM_CLOCK_H

#include <linux/device.h>
#include <linux/notifier.h>

struct pm_clk_notifier_block {
	struct notifier_block nb;
	struct dev_pm_domain *pm_domain;
	char *con_ids[];
};

struct clk;

#ifdef CONFIG_PM
extern int pm_clk_runtime_suspend(struct device *dev);
extern int pm_clk_runtime_resume(struct device *dev);
#define USE_PM_CLK_RUNTIME_OPS \
	.runtime_suspend = pm_clk_runtime_suspend, \
	.runtime_resume = pm_clk_runtime_resume,
#else
#define USE_PM_CLK_RUNTIME_OPS
#endif

#ifdef CONFIG_PM_CLK
static inline bool pm_clk_no_clocks(struct device *dev)
{
	return dev && dev->power.subsys_data
		&& list_empty(&dev->power.subsys_data->clock_list);
}

extern void pm_clk_init(struct device *dev);
extern int pm_clk_create(struct device *dev);
extern void pm_clk_destroy(struct device *dev);
extern int pm_clk_add(struct device *dev, const char *con_id);
extern int pm_clk_add_clk(struct device *dev, struct clk *clk);
extern int of_pm_clk_add_clks(struct device *dev);
extern void pm_clk_remove(struct device *dev, const char *con_id);
extern void pm_clk_remove_clk(struct device *dev, struct clk *clk);
extern int pm_clk_suspend(struct device *dev);
extern int pm_clk_resume(struct device *dev);
#else
static inline bool pm_clk_no_clocks(struct device *dev)
{
	return true;
}
static inline void pm_clk_init(struct device *dev)
{
}
static inline int pm_clk_create(struct device *dev)
{
	return -EINVAL;
}
static inline void pm_clk_destroy(struct device *dev)
{
}
static inline int pm_clk_add(struct device *dev, const char *con_id)
{
	return -EINVAL;
}

static inline int pm_clk_add_clk(struct device *dev, struct clk *clk)
{
	return -EINVAL;
}
static inline int of_pm_clk_add_clks(struct device *dev)
{
	return -EINVAL;
}
static inline void pm_clk_remove(struct device *dev, const char *con_id)
{
}
#define pm_clk_suspend	NULL
#define pm_clk_resume	NULL
static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk)
{
}
#endif

#ifdef CONFIG_HAVE_CLK
extern void pm_clk_add_notifier(struct bus_type *bus,
					struct pm_clk_notifier_block *clknb);
#else
static inline void pm_clk_add_notifier(struct bus_type *bus,
					struct pm_clk_notifier_block *clknb)
{
}
#endif

#endif
Commit	Line	Data
b5e8d269 RW	1	/*
	2	* pm_clock.h - Definitions and headers related to device clocks.
	3	*
	4	* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
	5	*
	6	* This file is released under the GPLv2.
	7	*/
	8
	9	#ifndef _LINUX_PM_CLOCK_H
	10	#define _LINUX_PM_CLOCK_H
	11
	12	#include <linux/device.h>
	13	#include <linux/notifier.h>
	14
	15	struct pm_clk_notifier_block {
	16	struct notifier_block nb;
	17	struct dev_pm_domain *pm_domain;
	18	char *con_ids[];
	19	};
	20
245bd6f6 GU	21	struct clk;
245bd6f6 GU	22
75f50400 RN	23	#ifdef CONFIG_PM
	24	extern int pm_clk_runtime_suspend(struct device *dev);
	25	extern int pm_clk_runtime_resume(struct device *dev);
	26	#define USE_PM_CLK_RUNTIME_OPS \
	27	.runtime_suspend = pm_clk_runtime_suspend, \
	28	.runtime_resume = pm_clk_runtime_resume,
	29	#else
	30	#define USE_PM_CLK_RUNTIME_OPS
	31	#endif
	32
b5e8d269 RW	33	#ifdef CONFIG_PM_CLK
	34	static inline bool pm_clk_no_clocks(struct device *dev)
	35	{
	36	return dev && dev->power.subsys_data
	37	&& list_empty(&dev->power.subsys_data->clock_list);
	38	}
	39
	40	extern void pm_clk_init(struct device *dev);
	41	extern int pm_clk_create(struct device *dev);
	42	extern void pm_clk_destroy(struct device *dev);
	43	extern int pm_clk_add(struct device dev, const char con_id);
245bd6f6	44	extern int pm_clk_add_clk(struct device dev, struct clk clk);
02113ba9	45	extern int of_pm_clk_add_clks(struct device *dev);
b5e8d269	46	extern void pm_clk_remove(struct device dev, const char con_id);
02113ba9	47	extern void pm_clk_remove_clk(struct device dev, struct clk clk);
b5e8d269 RW	48	extern int pm_clk_suspend(struct device *dev);
	49	extern int pm_clk_resume(struct device *dev);
	50	#else
	51	static inline bool pm_clk_no_clocks(struct device *dev)
	52	{
	53	return true;
	54	}
	55	static inline void pm_clk_init(struct device *dev)
	56	{
	57	}
	58	static inline int pm_clk_create(struct device *dev)
	59	{
	60	return -EINVAL;
	61	}
	62	static inline void pm_clk_destroy(struct device *dev)
	63	{
	64	}
	65	static inline int pm_clk_add(struct device dev, const char con_id)
	66	{
	67	return -EINVAL;
	68	}
245bd6f6 GU	69
	70	static inline int pm_clk_add_clk(struct device dev, struct clk clk)
	71	{
	72	return -EINVAL;
	73	}
02113ba9 JH	74	static inline int of_pm_clk_add_clks(struct device *dev)
	75	{
	76	return -EINVAL;
	77	}
b5e8d269 RW	78	static inline void pm_clk_remove(struct device dev, const char con_id)
	79	{
	80	}
	81	#define pm_clk_suspend NULL
	82	#define pm_clk_resume NULL
02113ba9 JH	83	static inline void pm_clk_remove_clk(struct device dev, struct clk clk)
	84	{
	85	}
b5e8d269 RW	86	#endif
	87
	88	#ifdef CONFIG_HAVE_CLK
	89	extern void pm_clk_add_notifier(struct bus_type *bus,
	90	struct pm_clk_notifier_block *clknb);
	91	#else
	92	static inline void pm_clk_add_notifier(struct bus_type *bus,
	93	struct pm_clk_notifier_block *clknb)
	94	{
	95	}
	96	#endif
	97
	98	#endif