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/*
* 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 void pm_clk_remove(struct device *dev, const char *con_id);
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 void pm_clk_remove(struct device *dev, const char *con_id)
{
}
#define pm_clk_suspend NULL
#define pm_clk_resume NULL
#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