1 /*
2  * Real-time clock definitions and interfaces
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_POWERPC_RTC_H__
25 #define __ASM_POWERPC_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 
get_rtc_time(struct rtc_time * time)45 static inline unsigned int get_rtc_time(struct rtc_time *time)
46 {
47 	if (ppc_md.get_rtc_time)
48 		ppc_md.get_rtc_time(time);
49 	return RTC_24H;
50 }
51 
52 /* Set the current date and time in the real time clock. */
set_rtc_time(struct rtc_time * time)53 static inline int set_rtc_time(struct rtc_time *time)
54 {
55 	if (ppc_md.set_rtc_time)
56 		return ppc_md.set_rtc_time(time);
57 	return -EINVAL;
58 }
59 
get_rtc_ss(void)60 static inline unsigned int get_rtc_ss(void)
61 {
62 	struct rtc_time h;
63 
64 	get_rtc_time(&h);
65 	return h.tm_sec;
66 }
67 
get_rtc_pll(struct rtc_pll_info * pll)68 static inline int get_rtc_pll(struct rtc_pll_info *pll)
69 {
70 	return -EINVAL;
71 }
set_rtc_pll(struct rtc_pll_info * pll)72 static inline int set_rtc_pll(struct rtc_pll_info *pll)
73 {
74 	return -EINVAL;
75 }
76 
77 #endif /* __KERNEL__ */
78 #endif /* __ASM_POWERPC_RTC_H__ */
79