| Mike Frysinger | 6b160e4 | 2008-02-15 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 | |
| 7 | #ifndef _BB_RTC_H_ |
| 8 | #define _BB_RTC_H_ |
| 9 | |
| 10 | #include "libbb.h" |
| 11 | |
| 12 | extern int rtc_adjtime_is_utc(void); |
| Mike Frysinger | 977bc6a | 2008-02-15 07:19:03 +0000 | [diff] [blame^] | 13 | extern int rtc_xopen(const char **default_rtc, int flags); |
| Mike Frysinger | 6b160e4 | 2008-02-15 02:27:19 +0000 | [diff] [blame] | 14 | extern time_t rtc_read_time(int fd, int utc); |
| 15 | |
| 16 | |
| 17 | |
| 18 | /* |
| 19 | * Everything below this point has been copied from linux/rtc.h |
| 20 | * to eliminate the kernel header dependency |
| 21 | */ |
| 22 | |
| 23 | struct 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 | |
| 35 | struct 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 | |
| 46 | #define RTC_AIE_ON _IO('p', 0x01) /* Alarm int. enable on */ |
| 47 | #define RTC_AIE_OFF _IO('p', 0x02) /* ... off */ |
| 48 | #define RTC_UIE_ON _IO('p', 0x03) /* Update int. enable on */ |
| 49 | #define RTC_UIE_OFF _IO('p', 0x04) /* ... off */ |
| 50 | #define RTC_PIE_ON _IO('p', 0x05) /* Periodic int. enable on */ |
| 51 | #define RTC_PIE_OFF _IO('p', 0x06) /* ... off */ |
| 52 | #define RTC_WIE_ON _IO('p', 0x0f) /* Watchdog int. enable on */ |
| 53 | #define RTC_WIE_OFF _IO('p', 0x10) /* ... off */ |
| 54 | |
| 55 | #define RTC_ALM_SET _IOW('p', 0x07, struct linux_rtc_time) /* Set alarm time */ |
| 56 | #define RTC_ALM_READ _IOR('p', 0x08, struct linux_rtc_time) /* Read alarm time */ |
| 57 | #define RTC_RD_TIME _IOR('p', 0x09, struct linux_rtc_time) /* Read RTC time */ |
| 58 | #define RTC_SET_TIME _IOW('p', 0x0a, struct linux_rtc_time) /* Set RTC time */ |
| 59 | #define RTC_IRQP_READ _IOR('p', 0x0b, unsigned long) /* Read IRQ rate */ |
| 60 | #define RTC_IRQP_SET _IOW('p', 0x0c, unsigned long) /* Set IRQ rate */ |
| 61 | #define RTC_EPOCH_READ _IOR('p', 0x0d, unsigned long) /* Read epoch */ |
| 62 | #define RTC_EPOCH_SET _IOW('p', 0x0e, unsigned long) /* Set epoch */ |
| 63 | |
| 64 | #define RTC_WKALM_SET _IOW('p', 0x0f, struct linux_rtc_wkalrm)/* Set wakeup alarm*/ |
| 65 | #define RTC_WKALM_RD _IOR('p', 0x10, struct linux_rtc_wkalrm)/* Get wakeup alarm*/ |
| 66 | |
| 67 | /* interrupt flags */ |
| 68 | #define RTC_IRQF 0x80 /* any of the following is active */ |
| 69 | #define RTC_PF 0x40 |
| 70 | #define RTC_AF 0x20 |
| 71 | #define RTC_UF 0x10 |
| 72 | |
| 73 | #endif |