/* * pm_clock.h - Definitions and headers related to device clocks. * * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp. * * This file is released under the GPLv2. */ #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