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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