linux/drivers/rtc/rtc-core.h
Alexandre Belloni 697e5a47aa rtc: add generic nvmem support
Many RTCs have an on board non volatile storage. It can be battery backed
RAM or an EEPROM. Use the nvmem subsystem to export it to both userspace
and in-kernel consumers.

This stays compatible with the previous (non documented) ABI that was using
/sys/class/rtc/rtcx/device/nvram to export that memory. But will warn about
the deprecation.

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-07 13:14:14 +02:00

56 lines
1.1 KiB
C

#ifdef CONFIG_RTC_INTF_DEV
extern void __init rtc_dev_init(void);
extern void __exit rtc_dev_exit(void);
extern void rtc_dev_prepare(struct rtc_device *rtc);
#else
static inline void rtc_dev_init(void)
{
}
static inline void rtc_dev_exit(void)
{
}
static inline void rtc_dev_prepare(struct rtc_device *rtc)
{
}
#endif
#ifdef CONFIG_RTC_INTF_PROC
extern void rtc_proc_add_device(struct rtc_device *rtc);
extern void rtc_proc_del_device(struct rtc_device *rtc);
#else
static inline void rtc_proc_add_device(struct rtc_device *rtc)
{
}
static inline void rtc_proc_del_device(struct rtc_device *rtc)
{
}
#endif
#ifdef CONFIG_RTC_INTF_SYSFS
const struct attribute_group **rtc_get_dev_attribute_groups(void);
#else
static inline const struct attribute_group **rtc_get_dev_attribute_groups(void)
{
return NULL;
}
#endif
#ifdef CONFIG_RTC_NVMEM
void rtc_nvmem_register(struct rtc_device *rtc);
void rtc_nvmem_unregister(struct rtc_device *rtc);
#else
static inline void rtc_nvmem_register(struct rtc_device *rtc) {}
static inline void rtc_nvmem_unregister(struct rtc_device *rtc) {}
#endif