Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0-only */
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.
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
14struct pm_clk_notifier_block {
15 struct notifier_block nb;
16 struct dev_pm_domain *pm_domain;
17 char *con_ids[];
18};
19
20struct clk;
21
22#ifdef CONFIG_PM
23extern int pm_clk_runtime_suspend(struct device *dev);
24extern 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
32#ifdef CONFIG_PM_CLK
33static 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
39extern void pm_clk_init(struct device *dev);
40extern int pm_clk_create(struct device *dev);
41extern void pm_clk_destroy(struct device *dev);
42extern int pm_clk_add(struct device *dev, const char *con_id);
43extern int pm_clk_add_clk(struct device *dev, struct clk *clk);
44extern int of_pm_clk_add_clks(struct device *dev);
45extern void pm_clk_remove_clk(struct device *dev, struct clk *clk);
46extern int pm_clk_suspend(struct device *dev);
47extern int pm_clk_resume(struct device *dev);
48extern int devm_pm_clk_create(struct device *dev);
49#else
50static inline bool pm_clk_no_clocks(struct device *dev)
51{
52 return true;
53}
54static inline void pm_clk_init(struct device *dev)
55{
56}
57static inline int pm_clk_create(struct device *dev)
58{
59 return -EINVAL;
60}
61static inline void pm_clk_destroy(struct device *dev)
62{
63}
64static inline int pm_clk_add(struct device *dev, const char *con_id)
65{
66 return -EINVAL;
67}
68
69static inline int pm_clk_add_clk(struct device *dev, struct clk *clk)
70{
71 return -EINVAL;
72}
73static inline int of_pm_clk_add_clks(struct device *dev)
74{
75 return -EINVAL;
76}
77#define pm_clk_suspend NULL
78#define pm_clk_resume NULL
79static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk)
80{
81}
82static inline int devm_pm_clk_create(struct device *dev)
83{
84 return -EINVAL;
85}
86#endif
87
88#ifdef CONFIG_HAVE_CLK
89extern void pm_clk_add_notifier(const struct bus_type *bus,
90 struct pm_clk_notifier_block *clknb);
91#else
92static inline void pm_clk_add_notifier(const struct bus_type *bus,
93 struct pm_clk_notifier_block *clknb)
94{
95}
96#endif
97
98#endif