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rtc_.h 2.6 KB

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  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. #ifndef BB_RTC_H
  7. #define BB_RTC_H 1
  8. #include "libbb.h"
  9. PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
  10. int rtc_adjtime_is_utc(void) FAST_FUNC;
  11. int rtc_xopen(const char **default_rtc, int flags) FAST_FUNC;
  12. void rtc_read_tm(struct tm *ptm, int fd) FAST_FUNC;
  13. time_t rtc_tm2time(struct tm *ptm, int utc) FAST_FUNC;
  14. /*
  15. * Everything below this point has been copied from linux/rtc.h
  16. * to eliminate the kernel header dependency
  17. */
  18. struct linux_rtc_time {
  19. int tm_sec;
  20. int tm_min;
  21. int tm_hour;
  22. int tm_mday;
  23. int tm_mon;
  24. int tm_year;
  25. int tm_wday;
  26. int tm_yday;
  27. int tm_isdst;
  28. };
  29. struct linux_rtc_wkalrm {
  30. unsigned char enabled; /* 0 = alarm disabled, 1 = alarm enabled */
  31. unsigned char pending; /* 0 = alarm not pending, 1 = alarm pending */
  32. struct linux_rtc_time time; /* time the alarm is set to */
  33. };
  34. /*
  35. * ioctl calls that are permitted to the /dev/rtc interface, if
  36. * any of the RTC drivers are enabled.
  37. */
  38. #define RTC_AIE_ON _IO('p', 0x01) /* Alarm int. enable on */
  39. #define RTC_AIE_OFF _IO('p', 0x02) /* ... off */
  40. #define RTC_UIE_ON _IO('p', 0x03) /* Update int. enable on */
  41. #define RTC_UIE_OFF _IO('p', 0x04) /* ... off */
  42. #define RTC_PIE_ON _IO('p', 0x05) /* Periodic int. enable on */
  43. #define RTC_PIE_OFF _IO('p', 0x06) /* ... off */
  44. #define RTC_WIE_ON _IO('p', 0x0f) /* Watchdog int. enable on */
  45. #define RTC_WIE_OFF _IO('p', 0x10) /* ... off */
  46. #define RTC_ALM_SET _IOW('p', 0x07, struct linux_rtc_time) /* Set alarm time */
  47. #define RTC_ALM_READ _IOR('p', 0x08, struct linux_rtc_time) /* Read alarm time */
  48. #define RTC_RD_TIME _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time */
  49. #define RTC_SET_TIME _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time */
  50. #define RTC_IRQP_READ _IOR('p', 0x0b, unsigned long) /* Read IRQ rate */
  51. #define RTC_IRQP_SET _IOW('p', 0x0c, unsigned long) /* Set IRQ rate */
  52. #define RTC_EPOCH_READ _IOR('p', 0x0d, unsigned long) /* Read epoch */
  53. #define RTC_EPOCH_SET _IOW('p', 0x0e, unsigned long) /* Set epoch */
  54. #define RTC_WKALM_SET _IOW('p', 0x0f, struct linux_rtc_wkalrm)/* Set wakeup alarm*/
  55. #define RTC_WKALM_RD _IOR('p', 0x10, struct linux_rtc_wkalrm)/* Get wakeup alarm*/
  56. /* interrupt flags */
  57. #define RTC_IRQF 0x80 /* any of the following is active */
  58. #define RTC_PF 0x40
  59. #define RTC_AF 0x20
  60. #define RTC_UF 0x10
  61. POP_SAVED_FUNCTION_VISIBILITY
  62. #endif