Release 4.14 arch/m32r/include/asm/rtc.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __RTC_H__
#define __RTC_H__
/* Dallas DS1302 clock/calendar register numbers. */
# define RTC_SECONDS 0
# define RTC_MINUTES 1
# define RTC_HOURS 2
# define RTC_DAY_OF_MONTH 3
# define RTC_MONTH 4
# define RTC_WEEKDAY 5
# define RTC_YEAR 6
# define RTC_CONTROL 7
/* Bits in CONTROL register. */
# define RTC_CONTROL_WRITEPROTECT 0x80
# define RTC_TRICKLECHARGER 8
/* Bits in TRICKLECHARGER register TCS TCS TCS TCS DS DS RS RS. */
# define RTC_TCR_PATTERN 0xA0
/* 1010xxxx */
# define RTC_TCR_1DIOD 0x04
/* xxxx01xx */
# define RTC_TCR_2DIOD 0x08
/* xxxx10xx */
# define RTC_TCR_DISABLED 0x00
/* xxxxxx00 Disabled */
# define RTC_TCR_2KOHM 0x01
/* xxxxxx01 2KOhm */
# define RTC_TCR_4KOHM 0x02
/* xxxxxx10 4kOhm */
# define RTC_TCR_8KOHM 0x03
/* xxxxxx11 8kOhm */
#ifdef CONFIG_DS1302
extern unsigned char ds1302_readreg(int reg);
extern void ds1302_writereg(int reg, unsigned char val);
extern int ds1302_init(void);
# define CMOS_READ(x) ds1302_readreg(x)
# define CMOS_WRITE(val,reg) ds1302_writereg(reg,val)
# define RTC_INIT() ds1302_init()
#else
/* No RTC configured so we shouldn't try to access any. */
# define CMOS_READ(x) 42
# define CMOS_WRITE(x,y)
# define RTC_INIT() (-1)
#endif
/*
* The struct used to pass data via the following ioctl. Similar to the
* struct tm in <time.h>, but it needs to be here so that the kernel
* source is self contained, allowing cross-compiles, etc. etc.
*/
struct rtc_time {
int tm_sec;
int tm_min;
int tm_hour;
int tm_mday;
int tm_mon;
int tm_year;
int tm_wday;
int tm_yday;
int tm_isdst;
};
/* ioctl() calls that are permitted to the /dev/rtc interface. */
#define RTC_MAGIC 'p'
#define RTC_RD_TIME _IOR(RTC_MAGIC, 0x09, struct rtc_time)
/* Read RTC time. */
#define RTC_SET_TIME _IOW(RTC_MAGIC, 0x0a, struct rtc_time)
/* Set RTC time. */
#define RTC_SET_CHARGE _IOW(RTC_MAGIC, 0x0b, int)
#define RTC_MAX_IOCTL 0x0b
#endif /* __RTC_H__ */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Hirokazu Takata | 220 | 99.55% | 2 | 66.67% |
| Greg Kroah-Hartman | 1 | 0.45% | 1 | 33.33% |
| Total | 221 | 100.00% | 3 | 100.00% |
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