| | 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 | |
| | 15 | struct pm_clk_notifier_block { |
| | 16 | struct notifier_block nb; |
| | 17 | struct dev_pm_domain *pm_domain; |
| | 18 | char *con_ids[]; |
| | 19 | }; |
| | 20 | |
| | 21 | struct clk; |
| | 22 | |
| | 23 | #ifdef CONFIG_PM |
| | 24 | extern int pm_clk_runtime_suspend(struct device *dev); |
| | 25 | extern 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 |
| | 34 | static 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 | |
| | 40 | extern void pm_clk_init(struct device *dev); |
| | 41 | extern int pm_clk_create(struct device *dev); |
| | 42 | extern void pm_clk_destroy(struct device *dev); |
| | 43 | extern int pm_clk_add(struct device *dev, const char *con_id); |
| | 44 | extern int pm_clk_add_clk(struct device *dev, struct clk *clk); |
| | 45 | extern int of_pm_clk_add_clk(struct device *dev, const char *name); |
| | 46 | extern int of_pm_clk_add_clks(struct device *dev); |
| | 47 | extern void pm_clk_remove(struct device *dev, const char *con_id); |
| | 48 | extern void pm_clk_remove_clk(struct device *dev, struct clk *clk); |
| | 49 | extern int pm_clk_suspend(struct device *dev); |
| | 50 | extern int pm_clk_resume(struct device *dev); |
| | 51 | #else |
| | 52 | static inline bool pm_clk_no_clocks(struct device *dev) |
| | 53 | { |
| | 54 | return true; |
| | 55 | } |
| | 56 | static inline void pm_clk_init(struct device *dev) |
| | 57 | { |
| | 58 | } |
| | 59 | static inline int pm_clk_create(struct device *dev) |
| | 60 | { |
| | 61 | return -EINVAL; |
| | 62 | } |
| | 63 | static inline void pm_clk_destroy(struct device *dev) |
| | 64 | { |
| | 65 | } |
| | 66 | static inline int pm_clk_add(struct device *dev, const char *con_id) |
| | 67 | { |
| | 68 | return -EINVAL; |
| | 69 | } |
| | 70 | |
| | 71 | static inline int pm_clk_add_clk(struct device *dev, struct clk *clk) |
| | 72 | { |
| | 73 | return -EINVAL; |
| | 74 | } |
| | 75 | static inline int of_pm_clk_add_clks(struct device *dev) |
| | 76 | { |
| | 77 | return -EINVAL; |
| | 78 | } |
| | 79 | static inline void pm_clk_remove(struct device *dev, const char *con_id) |
| | 80 | { |
| | 81 | } |
| | 82 | #define pm_clk_suspend NULL |
| | 83 | #define pm_clk_resume NULL |
| | 84 | static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk) |
| | 85 | { |
| | 86 | } |
| | 87 | #endif |
| | 88 | |
| | 89 | #ifdef CONFIG_HAVE_CLK |
| | 90 | extern void pm_clk_add_notifier(struct bus_type *bus, |
| | 91 | struct pm_clk_notifier_block *clknb); |
| | 92 | #else |
| | 93 | static inline void pm_clk_add_notifier(struct bus_type *bus, |
| | 94 | struct pm_clk_notifier_block *clknb) |
| | 95 | { |
| | 96 | } |
| | 97 | #endif |
| | 98 | |
| | 99 | #endif |
projects / mirror_ubuntu-bionic-kernel.git / blame_incremental