Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
15struct pm_clk_notifier_block {
16 struct notifier_block nb;
17 struct dev_pm_domain *pm_domain;
18 char *con_ids[];
19};
20
21struct clk;
22
23#ifdef CONFIG_PM
24extern int pm_clk_runtime_suspend(struct device *dev);
25extern 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
33#ifdef CONFIG_PM_CLK
34static 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
40extern void pm_clk_init(struct device *dev);
41extern int pm_clk_create(struct device *dev);
42extern void pm_clk_destroy(struct device *dev);
43extern int pm_clk_add(struct device *dev, const char *con_id);
44extern int pm_clk_add_clk(struct device *dev, struct clk *clk);
45extern int of_pm_clk_add_clks(struct device *dev);
46extern void pm_clk_remove(struct device *dev, const char *con_id);
47extern void pm_clk_remove_clk(struct device *dev, struct clk *clk);
48extern int pm_clk_suspend(struct device *dev);
49extern int pm_clk_resume(struct device *dev);
50#else
51static inline bool pm_clk_no_clocks(struct device *dev)
52{
53 return true;
54}
55static inline void pm_clk_init(struct device *dev)
56{
57}
58static inline int pm_clk_create(struct device *dev)
59{
60 return -EINVAL;
61}
62static inline void pm_clk_destroy(struct device *dev)
63{
64}
65static inline int pm_clk_add(struct device *dev, const char *con_id)
66{
67 return -EINVAL;
68}
69
70static inline int pm_clk_add_clk(struct device *dev, struct clk *clk)
71{
72 return -EINVAL;
73}
74static inline int of_pm_clk_add_clks(struct device *dev)
75{
76 return -EINVAL;
77}
78static 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
83static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk)
84{
85}
86#endif
87
88#ifdef CONFIG_HAVE_CLK
89extern void pm_clk_add_notifier(struct bus_type *bus,
90 struct pm_clk_notifier_block *clknb);
91#else
92static inline void pm_clk_add_notifier(struct bus_type *bus,
93 struct pm_clk_notifier_block *clknb)
94{
95}
96#endif
97
98#endif