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1/*
2 * include/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
45static 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. */
61static 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
77static 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
85static inline int get_rtc_pll(struct rtc_pll_info *pll)
86{
87 return -EINVAL;
88}
89static inline int set_rtc_pll(struct rtc_pll_info *pll)
90{
91 return -EINVAL;
92}
93
94#endif /* __KERNEL__ */
95#endif /* __ASM_RTC_H__ */