| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * inclue/asm-ppc/rtc.h |
| 3 | * |
| 4 | * Author: Tom Rini <trini@mvista.com> |
| 5 | * |
| 6 | * 2002 (c) MontaVista, Software, Inc. This file is licensed under |
| 7 | * the terms of the GNU General Public License version 2. This program |
| 8 | * is licensed "as is" without any warranty of any kind, whether express |
| 9 | * or implied. |
| 10 | * |
| 11 | * Based on: |
| 12 | * include/asm-m68k/rtc.h |
| 13 | * |
| 14 | * Copyright Richard Zidlicky |
| 15 | * implementation details for genrtc/q40rtc driver |
| 16 | * |
| 17 | * And the old drivers/macintosh/rtc.c which was heavily based on: |
| 18 | * Linux/SPARC Real Time Clock Driver |
| 19 | * Copyright (C) 1996 Thomas K. Dyas (tdyas@eden.rutgers.edu) |
| 20 | * |
| 21 | * With additional work by Paul Mackerras and Franz Sirl. |
| 22 | */ |
| 23 | |
| 24 | #ifndef __ASM_RTC_H__ |
| 25 | #define __ASM_RTC_H__ |
| 26 | |
| 27 | #ifdef __KERNEL__ |
| 28 | |
| 29 | #include <linux/rtc.h> |
| 30 | |
| 31 | #include <asm/machdep.h> |
| 32 | #include <asm/time.h> |
| 33 | |
| 34 | #define RTC_PIE 0x40 /* periodic interrupt enable */ |
| 35 | #define RTC_AIE 0x20 /* alarm interrupt enable */ |
| 36 | #define RTC_UIE 0x10 /* update-finished interrupt enable */ |
| 37 | |
| 38 | /* some dummy definitions */ |
| 39 | #define RTC_BATT_BAD 0x100 /* battery bad */ |
| 40 | #define RTC_SQWE 0x08 /* enable square-wave output */ |
| 41 | #define RTC_DM_BINARY 0x04 /* all time/date values are BCD if clear */ |
| 42 | #define RTC_24H 0x02 /* 24 hour mode - else hours bit 7 means pm */ |
| 43 | #define RTC_DST_EN 0x01 /* auto switch DST - works f. USA only */ |
| 44 | |
| 45 | static inline unsigned int get_rtc_time(struct rtc_time *time) |
| 46 | { |
| 47 | if (ppc_md.get_rtc_time) { |
| 48 | unsigned long nowtime; |
| 49 | |
| 50 | nowtime = (ppc_md.get_rtc_time)(); |
| 51 | |
| 52 | to_tm(nowtime, time); |
| 53 | |
| 54 | time->tm_year -= 1900; |
| 55 | time->tm_mon -= 1; /* Make sure userland has a 0-based month */ |
| 56 | } |
| 57 | return RTC_24H; |
| 58 | } |
| 59 | |
| 60 | /* Set the current date and time in the real time clock. */ |
| 61 | static inline int set_rtc_time(struct rtc_time *time) |
| 62 | { |
| 63 | if (ppc_md.get_rtc_time) { |
| 64 | unsigned long nowtime; |
| 65 | |
| 66 | nowtime = mktime(time->tm_year+1900, time->tm_mon+1, |
| 67 | time->tm_mday, time->tm_hour, time->tm_min, |
| 68 | time->tm_sec); |
| 69 | |
| 70 | (ppc_md.set_rtc_time)(nowtime); |
| 71 | |
| 72 | return 0; |
| 73 | } else |
| 74 | return -EINVAL; |
| 75 | } |
| 76 | |
| 77 | static inline unsigned int get_rtc_ss(void) |
| 78 | { |
| 79 | struct rtc_time h; |
| 80 | |
| 81 | get_rtc_time(&h); |
| 82 | return h.tm_sec; |
| 83 | } |
| 84 | |
| 85 | static inline int get_rtc_pll(struct rtc_pll_info *pll) |
| 86 | { |
| 87 | return -EINVAL; |
| 88 | } |
| 89 | static inline int set_rtc_pll(struct rtc_pll_info *pll) |
| 90 | { |
| 91 | return -EINVAL; |
| 92 | } |
| 93 | |
| 94 | #endif /* __KERNEL__ */ |
| 95 | #endif /* __ASM_RTC_H__ */ |