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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; |
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 |