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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2011-08-25 15:34:19 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-08-25 15:34:19 +0200 |
| commit | b5e8d269d814763d597ccc0108d1fa6639ad35a1 (patch) | |
| tree | 9c401a279d38e977e7208debc74b7ce2708d3498 /include/linux/pm_clock.h | |
| parent | 4605ab653c1f9d7cc2dda8033de215c9cee325f4 (diff) | |
| download | linux-b5e8d269d814763d597ccc0108d1fa6639ad35a1.tar.gz linux-b5e8d269d814763d597ccc0108d1fa6639ad35a1.tar.bz2 linux-b5e8d269d814763d597ccc0108d1fa6639ad35a1.zip | |
PM: Move clock-related definitions and headers to separate file
Since the PM clock management code in drivers/base/power/clock_ops.c
is used for both runtime PM and system suspend/hibernation, the
definitions of data structures and headers related to it should not
be located in include/linux/pm_rumtime.h. Move them to a separate
header file.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Diffstat (limited to 'include/linux/pm_clock.h')
| -rw-r--r-- | include/linux/pm_clock.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/include/linux/pm_clock.h b/include/linux/pm_clock.h new file mode 100644 index 000000000000..8348866e7b05 --- /dev/null +++ b/include/linux/pm_clock.h @@ -0,0 +1,71 @@ +/* + * 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[]; +}; + +#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 void pm_clk_remove(struct device *dev, const char *con_id); +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 void pm_clk_remove(struct device *dev, const char *con_id) +{ +} +#define pm_clk_suspend NULL +#define pm_clk_resume NULL +#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 |