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 
get_rtc_time(struct rtc_time * time)31 static 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 	if (mach_hwclk)
40 		mach_hwclk(0, time);
41 	return RTC_24H;
42 }
43 
set_rtc_time(struct rtc_time * time)44 static inline int set_rtc_time(struct rtc_time *time)
45 {
46 	if (mach_hwclk)
47 		return mach_hwclk(1, time);
48 	return -EINVAL;
49 }
50 
get_rtc_ss(void)51 static inline unsigned int get_rtc_ss(void)
52 {
53 	if (mach_get_ss)
54 		return mach_get_ss();
55 	else{
56 		struct rtc_time h;
57 
58 		get_rtc_time(&h);
59 		return h.tm_sec;
60 	}
61 }
62 
get_rtc_pll(struct rtc_pll_info * pll)63 static inline int get_rtc_pll(struct rtc_pll_info *pll)
64 {
65 	if (mach_get_rtc_pll)
66 		return mach_get_rtc_pll(pll);
67 	else
68 		return -EINVAL;
69 }
set_rtc_pll(struct rtc_pll_info * pll)70 static inline int set_rtc_pll(struct rtc_pll_info *pll)
71 {
72 	if (mach_set_rtc_pll)
73 		return mach_set_rtc_pll(pll);
74 	else
75 		return -EINVAL;
76 }
77 #endif /* __KERNEL__ */
78 
79 #endif /* _ASM__RTC_H */
80