2 * pm_clock.h - Definitions and headers related to device clocks.
4 * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
6 * This file is released under the GPLv2.
9 #ifndef _LINUX_PM_CLOCK_H
10 #define _LINUX_PM_CLOCK_H
12 #include <linux/device.h>
13 #include <linux/notifier.h>
15 struct pm_clk_notifier_block {
16 struct notifier_block nb;
17 struct dev_pm_domain *pm_domain;
22 static inline bool pm_clk_no_clocks(struct device *dev)
24 return dev && dev->power.subsys_data
25 && list_empty(&dev->power.subsys_data->clock_list);
28 extern void pm_clk_init(struct device *dev);
29 extern int pm_clk_create(struct device *dev);
30 extern void pm_clk_destroy(struct device *dev);
31 extern int pm_clk_add(struct device *dev, const char *con_id);
32 extern void pm_clk_remove(struct device *dev, const char *con_id);
33 extern int pm_clk_suspend(struct device *dev);
34 extern int pm_clk_resume(struct device *dev);
36 static inline bool pm_clk_no_clocks(struct device *dev)
40 static inline void pm_clk_init(struct device *dev)
43 static inline int pm_clk_create(struct device *dev)
47 static inline void pm_clk_destroy(struct device *dev)
50 static inline int pm_clk_add(struct device *dev, const char *con_id)
54 static inline void pm_clk_remove(struct device *dev, const char *con_id)
57 #define pm_clk_suspend NULL
58 #define pm_clk_resume NULL
61 #ifdef CONFIG_HAVE_CLK
62 extern void pm_clk_add_notifier(struct bus_type *bus,
63 struct pm_clk_notifier_block *clknb);
65 static inline void pm_clk_add_notifier(struct bus_type *bus,
66 struct pm_clk_notifier_block *clknb)