diff options
Diffstat (limited to 'arch/cris/include/asm/rtc.h')
| -rw-r--r-- | arch/cris/include/asm/rtc.h | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/arch/cris/include/asm/rtc.h b/arch/cris/include/asm/rtc.h new file mode 100644 index 000000000000..17d3019529e1 --- /dev/null +++ b/arch/cris/include/asm/rtc.h @@ -0,0 +1,107 @@ + +#ifndef __RTC_H__ +#define __RTC_H__ + +#ifdef CONFIG_ETRAX_DS1302 + /* 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 */ + +#elif defined(CONFIG_ETRAX_PCF8563) + /* I2C bus slave registers. */ +# define RTC_I2C_READ 0xa3 +# define RTC_I2C_WRITE 0xa2 + + /* Phillips PCF8563 registers. */ +# define RTC_CONTROL1 0x00 /* Control/Status register 1. */ +# define RTC_CONTROL2 0x01 /* Control/Status register 2. */ +# define RTC_CLOCKOUT_FREQ 0x0d /* CLKOUT frequency. */ +# define RTC_TIMER_CONTROL 0x0e /* Timer control. */ +# define RTC_TIMER_CNTDOWN 0x0f /* Timer countdown. */ + + /* BCD encoded clock registers. */ +# define RTC_SECONDS 0x02 +# define RTC_MINUTES 0x03 +# define RTC_HOURS 0x04 +# define RTC_DAY_OF_MONTH 0x05 +# define RTC_WEEKDAY 0x06 /* Not coded in BCD! */ +# define RTC_MONTH 0x07 +# define RTC_YEAR 0x08 +# define RTC_MINUTE_ALARM 0x09 +# define RTC_HOUR_ALARM 0x0a +# define RTC_DAY_ALARM 0x0b +# define RTC_WEEKDAY_ALARM 0x0c + +#endif + +#ifdef CONFIG_ETRAX_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() +#elif defined(CONFIG_ETRAX_PCF8563) +extern unsigned char pcf8563_readreg(int reg); +extern void pcf8563_writereg(int reg, unsigned char val); +extern int pcf8563_init(void); +# define CMOS_READ(x) pcf8563_readreg(x) +# define CMOS_WRITE(val,reg) pcf8563_writereg(reg,val) +# define RTC_INIT() pcf8563_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' +/* Read RTC time. */ +#define RTC_RD_TIME _IOR(RTC_MAGIC, 0x09, struct rtc_time) +/* Set RTC time. */ +#define RTC_SET_TIME _IOW(RTC_MAGIC, 0x0a, struct rtc_time) +#define RTC_SET_CHARGE _IOW(RTC_MAGIC, 0x0b, int) +/* Voltage low detector */ +#define RTC_VL_READ _IOR(RTC_MAGIC, 0x13, int) +/* Clear voltage low information */ +#define RTC_VL_CLR _IO(RTC_MAGIC, 0x14) +#define RTC_MAX_IOCTL 0x14 + +#endif /* __RTC_H__ */ |