1/* include/asm-m68k/rtc.h
2 *
3 * Copyright Richard Zidlicky
4 * implementation details for genrtc/q40rtc driver
5 */
6/* permission is hereby granted to copy, modify and redistribute this code
7 * in terms of the GNU Library General Public License, Version 2 or later,
8 * at your option.
9 */
10
11#ifndef _ASM_RTC_H
12#define _ASM_RTC_H
13
14#ifdef __KERNEL__
15
16#include <linux/rtc.h>
17#include <asm/errno.h>
18#include <asm/machdep.h>
19
20#define RTC_PIE 0x40		/* periodic interrupt enable */
21#define RTC_AIE 0x20		/* alarm interrupt enable */
22#define RTC_UIE 0x10		/* update-finished interrupt enable */
23
24/* some dummy definitions */
25#define RTC_BATT_BAD 0x100	/* battery bad */
26#define RTC_SQWE 0x08		/* enable square-wave output */
27#define RTC_DM_BINARY 0x04	/* all time/date values are BCD if clear */
28#define RTC_24H 0x02		/* 24 hour mode - else hours bit 7 means pm */
29#define RTC_DST_EN 0x01	        /* auto switch DST - works f. USA only */
30
31static inline unsigned int get_rtc_time(struct rtc_time *time)
32{
33	/*
34	 * Only the values that we read from the RTC are set. We leave
35	 * tm_wday, tm_yday and tm_isdst untouched. Even though the
36	 * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
37	 * by the RTC when initially set to a non-zero value.
38	 */
39	mach_hwclk(0, time);
40	return RTC_24H;
41}
42
43static inline int set_rtc_time(struct rtc_time *time)
44{
45	return mach_hwclk(1, time);
46}
47
48static inline unsigned int get_rtc_ss(void)
49{
50	if (mach_get_ss)
51		return mach_get_ss();
52	else{
53		struct rtc_time h;
54
55		get_rtc_time(&h);
56		return h.tm_sec;
57	}
58}
59
60static inline int get_rtc_pll(struct rtc_pll_info *pll)
61{
62	if (mach_get_rtc_pll)
63		return mach_get_rtc_pll(pll);
64	else
65		return -EINVAL;
66}
67static inline int set_rtc_pll(struct rtc_pll_info *pll)
68{
69	if (mach_set_rtc_pll)
70		return mach_set_rtc_pll(pll);
71	else
72		return -EINVAL;
73}
74#endif /* __KERNEL__ */
75
76#endif /* _ASM__RTC_H */
77