root / prex-0.9.0 / bsp / drv / include / rtc.h @ 03e9c04a
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1 | 03e9c04a | Brad Neuman | /* $OpenBSD: time.h,v 1.25 2007/05/09 17:42:19 deraadt Exp $ */
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2 | /* $NetBSD: time.h,v 1.18 1996/04/23 10:29:33 mycroft Exp $ */
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3 | |||
4 | /*
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5 | * Copyright (c) 1982, 1986, 1993
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6 | * The Regents of the University of California. All rights reserved.
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7 | *
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8 | * Redistribution and use in source and binary forms, with or without
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9 | * modification, are permitted provided that the following conditions
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10 | * are met:
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11 | * 1. Redistributions of source code must retain the above copyright
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12 | * notice, this list of conditions and the following disclaimer.
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13 | * 2. Redistributions in binary form must reproduce the above copyright
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14 | * notice, this list of conditions and the following disclaimer in the
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15 | * documentation and/or other materials provided with the distribution.
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16 | * 3. Neither the name of the University nor the names of its contributors
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17 | * may be used to endorse or promote products derived from this software
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18 | * without specific prior written permission.
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19 | *
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20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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30 | * SUCH DAMAGE.
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31 | *
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32 | * @(#)time.h 8.2 (Berkeley) 7/10/94
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33 | */
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34 | |||
35 | /* Modified for Prex by Kohsuke Ohtani */
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36 | |||
37 | #ifndef _RTC_H
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38 | #define _RTC_H
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39 | |||
40 | #include <sys/cdefs.h> |
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41 | |||
42 | struct rtc_ops {
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43 | int (*gettime)(void *aux, struct timeval *tv); |
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44 | int (*settime)(void *aux, struct timeval *tv); |
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45 | }; |
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46 | |||
47 | /*
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48 | * "POSIX time" to/from "YY/MM/DD/hh/mm/ss"
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49 | */
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50 | struct clock_ymdhms {
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51 | u_short year; |
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52 | u_char mon; |
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53 | u_char day; |
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54 | u_char dow; /* Day of week */
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55 | u_char hour; |
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56 | u_char min; |
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57 | u_char sec; |
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58 | u_char nsec; |
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59 | }; |
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60 | |||
61 | /*
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62 | * BCD to decimal and decimal to BCD.
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63 | */
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64 | #define FROMBCD(x) (u_char)(((x) >> 4) * 10 + ((x) & 0xf)) |
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65 | #define TOBCD(x) (u_char)(((x) / 10 * 16) + ((x) % 10)) |
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66 | |||
67 | /* Some handy constants. */
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68 | #define SECDAY 86400L |
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69 | #define SECYR (SECDAY * 365) |
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70 | |||
71 | /* Traditional POSIX base year */
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72 | #define POSIX_BASE_YEAR 1970 |
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73 | |||
74 | __BEGIN_DECLS |
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75 | time_t rtc_ymdhms_to_secs(struct clock_ymdhms *dt);
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76 | void rtc_secs_to_ymdhms(time_t secs, struct clock_ymdhms *dt); |
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77 | void rtc_attach(struct rtc_ops *ops, void *aux); |
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78 | __END_DECLS |
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79 | |||
80 | #endif /* !_RTC_H */ |