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/arch/m32r/include/asm/rtc.h

https://bitbucket.org/thekraven/iscream_thunderc-2.6.35
C++ Header | 65 lines | 48 code | 7 blank | 10 comment | 0 complexity | 56161546f948c8a7325f7792ca8f9d1e MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
 1#ifndef __RTC_H__
 2#define __RTC_H__
 3
 4   /* Dallas DS1302 clock/calendar register numbers. */
 5#  define RTC_SECONDS      0
 6#  define RTC_MINUTES      1
 7#  define RTC_HOURS        2
 8#  define RTC_DAY_OF_MONTH 3
 9#  define RTC_MONTH        4
10#  define RTC_WEEKDAY      5
11#  define RTC_YEAR         6
12#  define RTC_CONTROL      7
13
14   /* Bits in CONTROL register. */
15#  define RTC_CONTROL_WRITEPROTECT 	0x80
16#  define RTC_TRICKLECHARGER 		8
17
18  /* Bits in TRICKLECHARGER register TCS TCS TCS TCS DS DS RS RS. */
19#  define RTC_TCR_PATTERN 	0xA0	/* 1010xxxx */
20#  define RTC_TCR_1DIOD 	0x04	/* xxxx01xx */
21#  define RTC_TCR_2DIOD 	0x08	/* xxxx10xx */
22#  define RTC_TCR_DISABLED 	0x00	/* xxxxxx00 Disabled */
23#  define RTC_TCR_2KOHM 	0x01	/* xxxxxx01 2KOhm */
24#  define RTC_TCR_4KOHM 	0x02	/* xxxxxx10 4kOhm */
25#  define RTC_TCR_8KOHM 	0x03	/* xxxxxx11 8kOhm */
26
27#ifdef CONFIG_DS1302
28extern unsigned char ds1302_readreg(int reg);
29extern void ds1302_writereg(int reg, unsigned char val);
30extern int ds1302_init(void);
31#  define CMOS_READ(x) ds1302_readreg(x)
32#  define CMOS_WRITE(val,reg) ds1302_writereg(reg,val)
33#  define RTC_INIT() ds1302_init()
34#else
35  /* No RTC configured so we shouldn't try to access any. */
36#  define CMOS_READ(x) 42
37#  define CMOS_WRITE(x,y)
38#  define RTC_INIT() (-1)
39#endif
40
41/*
42 * The struct used to pass data via the following ioctl. Similar to the
43 * struct tm in <time.h>, but it needs to be here so that the kernel
44 * source is self contained, allowing cross-compiles, etc. etc.
45 */
46struct rtc_time {
47	int tm_sec;
48	int tm_min;
49	int tm_hour;
50	int tm_mday;
51	int tm_mon;
52	int tm_year;
53	int tm_wday;
54	int tm_yday;
55	int tm_isdst;
56};
57
58/* ioctl() calls that are permitted to the /dev/rtc interface. */
59#define RTC_MAGIC 'p'
60#define RTC_RD_TIME		_IOR(RTC_MAGIC, 0x09, struct rtc_time)	/* Read RTC time. */
61#define RTC_SET_TIME		_IOW(RTC_MAGIC, 0x0a, struct rtc_time)	/* Set RTC time. */
62#define RTC_SET_CHARGE  	_IOW(RTC_MAGIC, 0x0b, int)
63#define RTC_MAX_IOCTL 0x0b
64
65#endif /* __RTC_H__ */