Gitiles
Code Review Sign In
gerrit.nordix.org / codeaurora / busybox / 551ffdccea39a9223ad451954db40fd7a6e20e79 / . / include / rtc_.h
blob: ae17ee7d4d4d2197067ad4e938c12b0df5c1a8cd [file] [log] [blame]
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]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
Denis Vlasenkoee5dce32008-09-26 10:35:55 +0000[diff] [blame]7#ifndef BB_RTC_H
8#define BB_RTC_H
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]9
10#include "libbb.h"
11
Denis Vlasenko98636eb2008-05-09 17:59:34 +0000[diff] [blame]12#if __GNUC_PREREQ(4,1)
13# pragma GCC visibility push(hidden)
14#endif
15
Denis Vlasenkodefc1ea2008-06-27 02:52:20 +0000[diff] [blame]16extern int rtc_adjtime_is_utc(void) FAST_FUNC;
17extern int rtc_xopen(const char **default_rtc, int flags) FAST_FUNC;
18extern time_t rtc_read_time(int fd, int utc) FAST_FUNC;
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]19
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]20/*
21 * Everything below this point has been copied from linux/rtc.h
22 * to eliminate the kernel header dependency
23 */
24
25struct linux_rtc_time {
26 int tm_sec;
27 int tm_min;
28 int tm_hour;
29 int tm_mday;
30 int tm_mon;
31 int tm_year;
32 int tm_wday;
33 int tm_yday;
34 int tm_isdst;
35};
36
37struct linux_rtc_wkalrm {
38 unsigned char enabled; /* 0 = alarm disabled, 1 = alarm enabled */
39 unsigned char pending; /* 0 = alarm not pending, 1 = alarm pending */
40 struct linux_rtc_time time; /* time the alarm is set to */
41};
42
43/*
44 * ioctl calls that are permitted to the /dev/rtc interface, if
45 * any of the RTC drivers are enabled.
46 */
Denis Vlasenko551ffdc2009-04-01 19:48:05 +0000[diff] [blame^]47#define RTC_AIE_ON _IO('p', 0x01) /* Alarm int. enable on */
48#define RTC_AIE_OFF _IO('p', 0x02) /* ... off */
49#define RTC_UIE_ON _IO('p', 0x03) /* Update int. enable on */
50#define RTC_UIE_OFF _IO('p', 0x04) /* ... off */
51#define RTC_PIE_ON _IO('p', 0x05) /* Periodic int. enable on */
52#define RTC_PIE_OFF _IO('p', 0x06) /* ... off */
53#define RTC_WIE_ON _IO('p', 0x0f) /* Watchdog int. enable on */
54#define RTC_WIE_OFF _IO('p', 0x10) /* ... off */
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]55
Denis Vlasenko551ffdc2009-04-01 19:48:05 +0000[diff] [blame^]56#define RTC_ALM_SET _IOW('p', 0x07, struct linux_rtc_time) /* Set alarm time */
57#define RTC_ALM_READ _IOR('p', 0x08, struct linux_rtc_time) /* Read alarm time */
58#define RTC_RD_TIME _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time */
59#define RTC_SET_TIME _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time */
60#define RTC_IRQP_READ _IOR('p', 0x0b, unsigned long) /* Read IRQ rate */
61#define RTC_IRQP_SET _IOW('p', 0x0c, unsigned long) /* Set IRQ rate */
62#define RTC_EPOCH_READ _IOR('p', 0x0d, unsigned long) /* Read epoch */
63#define RTC_EPOCH_SET _IOW('p', 0x0e, unsigned long) /* Set epoch */
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]64
Denis Vlasenko551ffdc2009-04-01 19:48:05 +0000[diff] [blame^]65#define RTC_WKALM_SET _IOW('p', 0x0f, struct linux_rtc_wkalrm)/* Set wakeup alarm*/
66#define RTC_WKALM_RD _IOR('p', 0x10, struct linux_rtc_wkalrm)/* Get wakeup alarm*/
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]67
68/* interrupt flags */
69#define RTC_IRQF 0x80 /* any of the following is active */
70#define RTC_PF 0x40
71#define RTC_AF 0x20
72#define RTC_UF 0x10
73
Denis Vlasenko98636eb2008-05-09 17:59:34 +0000[diff] [blame]74#if __GNUC_PREREQ(4,1)
75# pragma GCC visibility pop
76#endif
77
Mike Frysinger6b160e42008-02-15 02:27:19 +0000[diff] [blame]78#endif