LXR busybox/include/rtc

   1/*
   2 * Common defines/structures/etc... for applets that need to work with the RTC.
   3 *
   4 * Licensed under GPLv2 or later, see file LICENSE in this source tree.
   5 */
   6
   7#ifndef BB_RTC_H
   8#define BB_RTC_H 1
   9
  10#include "libbb.h"
  11
  12PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
  13
  14#if ENABLE_FEATURE_HWCLOCK_ADJTIME_FHS
  15# define ADJTIME_PATH "/var/lib/hwclock/adjtime"
  16#else
  17# define ADJTIME_PATH "/etc/adjtime"
  18#endif
  19
  20int rtc_adjtime_is_utc(void) FAST_FUNC;
  21int rtc_xopen(const char **default_rtc, int flags) FAST_FUNC;
  22void rtc_read_tm(struct tm *ptm, int fd) FAST_FUNC;
  23time_t rtc_tm2time(struct tm *ptm, int utc) FAST_FUNC;
  24
  25
  26/*
  27 * Everything below this point has been copied from linux/rtc.h
  28 * to eliminate the kernel header dependency
  29 */
  30
  31struct linux_rtc_time {
  32        int tm_sec;
  33        int tm_min;
  34        int tm_hour;
  35        int tm_mday;
  36        int tm_mon;
  37        int tm_year;
  38        int tm_wday;
  39        int tm_yday;
  40        int tm_isdst;
  41};
  42
  43struct linux_rtc_wkalrm {
  44        unsigned char enabled;  /* 0 = alarm disabled, 1 = alarm enabled */
  45        unsigned char pending;  /* 0 = alarm not pending, 1 = alarm pending */
  46        struct linux_rtc_time time;  /* time the alarm is set to */
  47};
  48
  49/*
  50 * ioctl calls that are permitted to the /dev/rtc interface, if
  51 * any of the RTC drivers are enabled.
  52 */
  53#define RTC_AIE_ON      _IO('p', 0x01)  /* Alarm int. enable on         */
  54#define RTC_AIE_OFF     _IO('p', 0x02)  /* ... off                      */
  55#define RTC_UIE_ON      _IO('p', 0x03)  /* Update int. enable on        */
  56#define RTC_UIE_OFF     _IO('p', 0x04)  /* ... off                      */
  57#define RTC_PIE_ON      _IO('p', 0x05)  /* Periodic int. enable on      */
  58#define RTC_PIE_OFF     _IO('p', 0x06)  /* ... off                      */
  59#define RTC_WIE_ON      _IO('p', 0x0f)  /* Watchdog int. enable on      */
  60#define RTC_WIE_OFF     _IO('p', 0x10)  /* ... off                      */
  61
  62#define RTC_ALM_SET     _IOW('p', 0x07, struct linux_rtc_time) /* Set alarm time  */
  63#define RTC_ALM_READ    _IOR('p', 0x08, struct linux_rtc_time) /* Read alarm time */
  64#define RTC_RD_TIME     _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time   */
  65#define RTC_SET_TIME    _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time    */
  66#define RTC_IRQP_READ   _IOR('p', 0x0b, unsigned long)   /* Read IRQ rate   */
  67#define RTC_IRQP_SET    _IOW('p', 0x0c, unsigned long)   /* Set IRQ rate    */
  68#define RTC_EPOCH_READ  _IOR('p', 0x0d, unsigned long)   /* Read epoch      */
  69#define RTC_EPOCH_SET   _IOW('p', 0x0e, unsigned long)   /* Set epoch       */
  70
  71#define RTC_WKALM_SET   _IOW('p', 0x0f, struct linux_rtc_wkalrm)/* Set wakeup alarm*/
  72#define RTC_WKALM_RD    _IOR('p', 0x10, struct linux_rtc_wkalrm)/* Get wakeup alarm*/
  73
  74/* interrupt flags */
  75#define RTC_IRQF 0x80 /* any of the following is active */
  76#define RTC_PF 0x40
  77#define RTC_AF 0x20
  78#define RTC_UF 0x10
  79
  80POP_SAVED_FUNCTION_VISIBILITY
  81
  82#endif
  83