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