LXR busybox/include/rtc

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