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

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * pm_clock.h - Definitions and headers related to device clocks.
 *
 * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
 */

#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_clk(struct device *dev, const char *name);
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
55716d26	1	/* SPDX-License-Identifier: GPL-2.0-only */
b5e8d269 RW	2	/*
	3	* pm_clock.h - Definitions and headers related to device clocks.
	4	*
	5	* Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
b5e8d269 RW	6	*/
	7
	8	#ifndef _LINUX_PM_CLOCK_H
	9	#define _LINUX_PM_CLOCK_H
	10
	11	#include <linux/device.h>
	12	#include <linux/notifier.h>
	13
	14	struct pm_clk_notifier_block {
	15	struct notifier_block nb;
	16	struct dev_pm_domain *pm_domain;
	17	char *con_ids[];
	18	};
	19
245bd6f6 GU	20	struct clk;
245bd6f6 GU	21
75f50400 RN	22	#ifdef CONFIG_PM
	23	extern int pm_clk_runtime_suspend(struct device *dev);
	24	extern int pm_clk_runtime_resume(struct device *dev);
	25	#define USE_PM_CLK_RUNTIME_OPS \
	26	.runtime_suspend = pm_clk_runtime_suspend, \
	27	.runtime_resume = pm_clk_runtime_resume,
	28	#else
	29	#define USE_PM_CLK_RUNTIME_OPS
	30	#endif
	31
b5e8d269 RW	32	#ifdef CONFIG_PM_CLK
	33	static inline bool pm_clk_no_clocks(struct device *dev)
	34	{
	35	return dev && dev->power.subsys_data
	36	&& list_empty(&dev->power.subsys_data->clock_list);
	37	}
	38
	39	extern void pm_clk_init(struct device *dev);
	40	extern int pm_clk_create(struct device *dev);
	41	extern void pm_clk_destroy(struct device *dev);
	42	extern int pm_clk_add(struct device dev, const char con_id);
245bd6f6	43	extern int pm_clk_add_clk(struct device dev, struct clk clk);
498b5fdd	44	extern int of_pm_clk_add_clk(struct device dev, const char name);
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