| /* SPDX-License-Identifier: GPL-2.0-only */ |
| /* |
| * pm_clock.h - Definitions and headers related to device clocks. |
| * |
| * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp. |
| */ |
| |
| #ifndef _LINUX_PM_CLOCK_H |
| #define _LINUX_PM_CLOCK_H |
| |
| #include <linux/device.h> |
| #include <linux/notifier.h> |
| |
| struct pm_clk_notifier_block { |
| struct notifier_block nb; |
| struct dev_pm_domain *pm_domain; |
| char *con_ids[]; |
| }; |
| |
| struct clk; |
| |
| #ifdef CONFIG_PM |
| extern int pm_clk_runtime_suspend(struct device *dev); |
| extern int pm_clk_runtime_resume(struct device *dev); |
| #define USE_PM_CLK_RUNTIME_OPS \ |
| .runtime_suspend = pm_clk_runtime_suspend, \ |
| .runtime_resume = pm_clk_runtime_resume, |
| #else |
| #define USE_PM_CLK_RUNTIME_OPS |
| #endif |
| |
| #ifdef CONFIG_PM_CLK |
| static inline bool pm_clk_no_clocks(struct device *dev) |
| { |
| return dev && dev->power.subsys_data |
| && list_empty(&dev->power.subsys_data->clock_list); |
| } |
| |
| extern void pm_clk_init(struct device *dev); |
| extern int pm_clk_create(struct device *dev); |
| extern void pm_clk_destroy(struct device *dev); |
| extern int pm_clk_add(struct device *dev, const char *con_id); |
| extern int pm_clk_add_clk(struct device *dev, struct clk *clk); |
| extern int of_pm_clk_add_clk(struct device *dev, const char *name); |
| extern int of_pm_clk_add_clks(struct device *dev); |
| extern void pm_clk_remove(struct device *dev, const char *con_id); |
| extern void pm_clk_remove_clk(struct device *dev, struct clk *clk); |
| extern int pm_clk_suspend(struct device *dev); |
| extern int pm_clk_resume(struct device *dev); |
| #else |
| static inline bool pm_clk_no_clocks(struct device *dev) |
| { |
| return true; |
| } |
| static inline void pm_clk_init(struct device *dev) |
| { |
| } |
| static inline int pm_clk_create(struct device *dev) |
| { |
| return -EINVAL; |
| } |
| static inline void pm_clk_destroy(struct device *dev) |
| { |
| } |
| static inline int pm_clk_add(struct device *dev, const char *con_id) |
| { |
| return -EINVAL; |
| } |
| |
| static inline int pm_clk_add_clk(struct device *dev, struct clk *clk) |
| { |
| return -EINVAL; |
| } |
| static inline int of_pm_clk_add_clks(struct device *dev) |
| { |
| return -EINVAL; |
| } |
| static inline void pm_clk_remove(struct device *dev, const char *con_id) |
| { |
| } |
| #define pm_clk_suspend NULL |
| #define pm_clk_resume NULL |
| static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk) |
| { |
| } |
| #endif |
| |
| #ifdef CONFIG_HAVE_CLK |
| extern void pm_clk_add_notifier(struct bus_type *bus, |
| struct pm_clk_notifier_block *clknb); |
| #else |
| static inline void pm_clk_add_notifier(struct bus_type *bus, |
| struct pm_clk_notifier_block *clknb) |
| { |
| } |
| #endif |
| |
| #endif |