/* $Id: rtc.h,v 1.7 2002/11/04 07:32:09 starvik Exp $ */ #ifndef __RTC_H__ #define __RTC_H__ #include <linux/config.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' #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_VLOW_RD _IOR(RTC_MAGIC, 0x11, int) /* Voltage Low detector */ #define RTC_VLOW_SET _IO(RTC_MAGIC, 0x12) /* Clear voltage low information */ #define RTC_MAX_IOCTL 0x12 #endif /* __RTC_H__ */