1 2#ifndef __RTC_H__ 3#define __RTC_H__ 4 5#ifdef CONFIG_ETRAX_DS1302 6 /* Dallas DS1302 clock/calendar register numbers. */ 7# define RTC_SECONDS 0 8# define RTC_MINUTES 1 9# define RTC_HOURS 2 10# define RTC_DAY_OF_MONTH 3 11# define RTC_MONTH 4 12# define RTC_WEEKDAY 5 13# define RTC_YEAR 6 14# define RTC_CONTROL 7 15 16 /* Bits in CONTROL register. */ 17# define RTC_CONTROL_WRITEPROTECT 0x80 18# define RTC_TRICKLECHARGER 8 19 20 /* Bits in TRICKLECHARGER register TCS TCS TCS TCS DS DS RS RS. */ 21# define RTC_TCR_PATTERN 0xA0 /* 1010xxxx */ 22# define RTC_TCR_1DIOD 0x04 /* xxxx01xx */ 23# define RTC_TCR_2DIOD 0x08 /* xxxx10xx */ 24# define RTC_TCR_DISABLED 0x00 /* xxxxxx00 Disabled */ 25# define RTC_TCR_2KOHM 0x01 /* xxxxxx01 2KOhm */ 26# define RTC_TCR_4KOHM 0x02 /* xxxxxx10 4kOhm */ 27# define RTC_TCR_8KOHM 0x03 /* xxxxxx11 8kOhm */ 28 29#elif defined(CONFIG_ETRAX_PCF8563) 30 /* I2C bus slave registers. */ 31# define RTC_I2C_READ 0xa3 32# define RTC_I2C_WRITE 0xa2 33 34 /* Phillips PCF8563 registers. */ 35# define RTC_CONTROL1 0x00 /* Control/Status register 1. */ 36# define RTC_CONTROL2 0x01 /* Control/Status register 2. */ 37# define RTC_CLOCKOUT_FREQ 0x0d /* CLKOUT frequency. */ 38# define RTC_TIMER_CONTROL 0x0e /* Timer control. */ 39# define RTC_TIMER_CNTDOWN 0x0f /* Timer countdown. */ 40 41 /* BCD encoded clock registers. */ 42# define RTC_SECONDS 0x02 43# define RTC_MINUTES 0x03 44# define RTC_HOURS 0x04 45# define RTC_DAY_OF_MONTH 0x05 46# define RTC_WEEKDAY 0x06 /* Not coded in BCD! */ 47# define RTC_MONTH 0x07 48# define RTC_YEAR 0x08 49# define RTC_MINUTE_ALARM 0x09 50# define RTC_HOUR_ALARM 0x0a 51# define RTC_DAY_ALARM 0x0b 52# define RTC_WEEKDAY_ALARM 0x0c 53 54#endif 55 56#ifdef CONFIG_ETRAX_DS1302 57extern unsigned char ds1302_readreg(int reg); 58extern void ds1302_writereg(int reg, unsigned char val); 59extern int ds1302_init(void); 60# define CMOS_READ(x) ds1302_readreg(x) 61# define CMOS_WRITE(val,reg) ds1302_writereg(reg,val) 62# define RTC_INIT() ds1302_init() 63#elif defined(CONFIG_ETRAX_PCF8563) 64extern unsigned char pcf8563_readreg(int reg); 65extern void pcf8563_writereg(int reg, unsigned char val); 66extern int pcf8563_init(void); 67# define CMOS_READ(x) pcf8563_readreg(x) 68# define CMOS_WRITE(val,reg) pcf8563_writereg(reg,val) 69# define RTC_INIT() pcf8563_init() 70#else 71 /* No RTC configured so we shouldn't try to access any. */ 72# define CMOS_READ(x) 42 73# define CMOS_WRITE(x,y) 74# define RTC_INIT() (-1) 75#endif 76 77/* 78 * The struct used to pass data via the following ioctl. Similar to the 79 * struct tm in <time.h>, but it needs to be here so that the kernel 80 * source is self contained, allowing cross-compiles, etc. etc. 81 */ 82struct rtc_time { 83 int tm_sec; 84 int tm_min; 85 int tm_hour; 86 int tm_mday; 87 int tm_mon; 88 int tm_year; 89 int tm_wday; 90 int tm_yday; 91 int tm_isdst; 92}; 93 94/* ioctl() calls that are permitted to the /dev/rtc interface. */ 95#define RTC_MAGIC 'p' 96/* Read RTC time. */ 97#define RTC_RD_TIME _IOR(RTC_MAGIC, 0x09, struct rtc_time) 98/* Set RTC time. */ 99#define RTC_SET_TIME _IOW(RTC_MAGIC, 0x0a, struct rtc_time) 100#define RTC_SET_CHARGE _IOW(RTC_MAGIC, 0x0b, int) 101/* Voltage low detector */ 102#define RTC_VL_READ _IOR(RTC_MAGIC, 0x13, int) 103/* Clear voltage low information */ 104#define RTC_VL_CLR _IO(RTC_MAGIC, 0x14) 105#define RTC_MAX_IOCTL 0x14 106 107#endif /* __RTC_H__ */ 108