/* * include/asm-ppc/todc.h * * Definitions for the M48Txx and mc146818 series of Time of day/Real Time * Clock chips. * * Author: Mark A. Greer * mgreer@mvista.com * * Copyright 2001 MontaVista Software Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; either version 2 of the License, or (at your * option) any later version. */ /* * Support for the M48T37/M48T59/.../mc146818 Real Time Clock chips. * Purpose is to make one generic file that handles all of these chips instead * of every platform implementing the same code over & over again. */ #ifndef __PPC_KERNEL_TODC_H #define __PPC_KERNEL_TODC_H typedef struct { uint rtc_type; /* your particular chip */ /* * Following are the addresses of the AS0, AS1, and DATA registers * of these chips. Note that these are board-specific. */ u_char *nvram_as0; u_char *nvram_as1; u_char *nvram_data; /* * Define bits to stop external set of regs from changing so * the chip can be read/written reliably. */ u_char enable_read; u_char enable_write; /* * Following is the number of AS0 address bits. This is normally * 8 but some bad hardware routes address lines incorrectly. */ int as0_bits; /* Following are the register offsets for the particular chip */ int year; int month; int day_of_month; int day_of_week; int hours; int minutes; int seconds; int control_b; int control_a; int watchdog; int interrupts; int alarm_date; int alarm_hour; int alarm_minutes; int alarm_seconds; int century; int flags; } todc_info_t; /* * Define the types of TODC/RTC variants that are supported in * arch/ppc/kernel/todc_time.c * Make a new one of these for any chip somehow differs from what's already * defined. That way, if you ever need to put in code to touch those * bits/registers in todc_time.c, you can put it inside an * 'if (todc_info->rtc_type == TODC_TYPE_XXX)' so you won't break * anyone else. */ #define TODC_TYPE_MK48T35 1 #define TODC_TYPE_MK48T37 2 #define TODC_TYPE_MK48T59 3 #define TODC_TYPE_DS1693 4 /* Dallas DS1693 RTC */ #define TODC_TYPE_DS1743 5 /* Dallas DS1743 RTC */ #define TODC_TYPE_DS1746 6 /* Dallas DS1746 RTC */ #define TODC_TYPE_DS1747 7 /* Dallas DS1747 RTC */ #define TODC_TYPE_DS1501 8 /* Dallas DS1501 RTC */ #define TODC_TYPE_DS1643 9 /* Dallas DS1643 RTC */ #define TODC_TYPE_PC97307 10 /* PC97307 internal RTC */ #define TODC_TYPE_DS1557 11 /* Dallas DS1557 RTC */ #define TODC_TYPE_MC146818 100 /* Leave room for more m48txx's */ /* * Bit to clear/set to enable reads/writes to the chip */ #define TODC_MK48TXX_CNTL_A_R 0x40 #define TODC_MK48TXX_CNTL_A_W 0x80 #define TODC_MK48TXX_DAY_CB 0x80 #define TODC_DS1501_CNTL_B_TE 0x80 /* * Define the values for the various RTC's that should to into the todc_info * table. */ #define TODC_TYPE_MK48T35_YEAR 0x7fff #define TODC_TYPE_MK48T35_MONTH 0x7ffe #define TODC_TYPE_MK48T35_DOM 0x7ffd /* Day of Month */ #define TODC_TYPE_MK48T35_DOW 0x7ffc /* Day of Week */ #define TODC_TYPE_MK48T35_HOURS 0x7ffb #define TODC_TYPE_MK48T35_MINUTES 0x7ffa #define TODC_TYPE_MK48T35_SECONDS 0x7ff9 #define TODC_TYPE_MK48T35_CNTL_B 0x7ff9 #define TODC_TYPE_MK48T35_CNTL_A 0x7ff8 #define TODC_TYPE_MK48T35_WATCHDOG 0x0000 #define TODC_TYPE_MK48T35_INTERRUPTS 0x0000 #define TODC_TYPE_MK48T35_ALARM_DATE 0x0000 #define TODC_TYPE_MK48T35_ALARM_HOUR 0x0000 #define TODC_TYPE_MK48T35_ALARM_MINUTES 0x0000 #define TODC_TYPE_MK48T35_ALARM_SECONDS 0x0000 #define TODC_TYPE_MK48T35_CENTURY 0x0000 #define TODC_TYPE_MK48T35_FLAGS 0x0000 #define TODC_TYPE_MK48T37_YEAR 0x7fff #define TODC_TYPE_MK48T37_MONTH 0x7ffe #define TODC_TYPE_MK48T37_DOM 0x7ffd /* Day of Month */ #define TODC_TYPE_MK48T37_DOW 0x7ffc /* Day of Week */ #define TODC_TYPE_MK48T37_HOURS 0x7ffb #define TODC_TYPE_MK48T37_MINUTES 0x7ffa #define TODC_TYPE_MK48T37_SECONDS 0x7ff9 #define TODC_TYPE_MK48T37_CNTL_B 0x7ff9 #define TODC_TYPE_MK48T37_CNTL_A 0x7ff8 #define TODC_TYPE_MK48T37_WATCHDOG 0x7ff7 #define TODC_TYPE_MK48T37_INTERRUPTS 0x7ff6 #define TODC_TYPE_MK48T37_ALARM_DATE 0x7ff5 #define TODC_TYPE_MK48T37_ALARM_HOUR 0x7ff4 #define TODC_TYPE_MK48T37_ALARM_MINUTES 0x7ff3 #define TODC_TYPE_MK48T37_ALARM_SECONDS 0x7ff2 #define TODC_TYPE_MK48T37_CENTURY 0x7ff1 #define TODC_TYPE_MK48T37_FLAGS 0x7ff0 #define TODC_TYPE_MK48T59_YEAR 0x1fff #define TODC_TYPE_MK48T59_MONTH 0x1ffe #define TODC_TYPE_MK48T59_DOM 0x1ffd /* Day of Month */ #define TODC_TYPE_MK48T59_DOW 0x1ffc /* Day of Week */ #define TODC_TYPE_MK48T59_HOURS 0x1ffb #define TODC_TYPE_MK48T59_MINUTES 0x1ffa #define TODC_TYPE_MK48T59_SECONDS 0x1ff9 #define TODC_TYPE_MK48T59_CNTL_B 0x1ff9 #define TODC_TYPE_MK48T59_CNTL_A 0x1ff8 #define TODC_TYPE_MK48T59_WATCHDOG 0x1fff #define TODC_TYPE_MK48T59_INTERRUPTS 0x1fff #define TODC_TYPE_MK48T59_ALARM_DATE 0x1fff #define TODC_TYPE_MK48T59_ALARM_HOUR 0x1fff #define TODC_TYPE_MK48T59_ALARM_MINUTES 0x1fff #define TODC_TYPE_MK48T59_ALARM_SECONDS 0x1fff #define TODC_TYPE_MK48T59_CENTURY 0x1fff #define TODC_TYPE_MK48T59_FLAGS 0x1fff #define TODC_TYPE_DS1501_YEAR 0x06 #define TODC_TYPE_DS1501_MONTH 0x05 #define TODC_TYPE_DS1501_DOM 0x04 /* Day of Month */ #define TODC_TYPE_DS1501_DOW 0x03 /* Day of Week */ #define TODC_TYPE_DS1501_HOURS 0x02 #define TODC_TYPE_DS1501_MINUTES 0x01 #define TODC_TYPE_DS1501_SECONDS 0x00 #define TODC_TYPE_DS1501_CNTL_B 0x0f #define TODC_TYPE_DS1501_CNTL_A 0x0f #define TODC_TYPE_DS1501_WATCHDOG 0xff #define TODC_TYPE_DS1501_INTERRUPTS 0xff #define TODC_TYPE_DS1501_ALARM_DATE 0x0b #define TODC_TYPE_DS1501_ALARM_HOUR 0x0a #define TODC_TYPE_DS1501_ALARM_MINUTES 0x09 #define TODC_TYPE_DS1501_ALARM_SECONDS 0x08 #define TODC_TYPE_DS1501_CENTURY 0x07 #define TODC_TYPE_DS1501_FLAGS 0xff #define TODC_TYPE_DS1557_YEAR 0x7ffff #define TODC_TYPE_DS1557_MONTH 0x7fffe #define TODC_TYPE_DS1557_DOM 0x7fffd /* Day of Month */ #define TODC_TYPE_DS1557_DOW 0x7fffc /* Day of Week */ #define TODC_TYPE_DS1557_HOURS 0x7fffb #define TODC_TYPE_DS1557_MINUTES 0x7fffa #define TODC_TYPE_DS1557_SECONDS 0x7fff9 #define TODC_TYPE_DS1557_CNTL_B 0x7fff9 #define TODC_TYPE_DS1557_CNTL_A 0x7fff8 /* control_a R/W regs */ #define TODC_TYPE_DS1557_WATCHDOG 0x7fff7 #define TODC_TYPE_DS1557_INTERRUPTS 0x7fff6 #define TODC_TYPE_DS1557_ALARM_DATE 0x7fff5 #define TODC_TYPE_DS1557_ALARM_HOUR 0x7fff4 #define TODC_TYPE_DS1557_ALARM_MINUTES 0x7fff3 #define TODC_TYPE_DS1557_ALARM_SECONDS 0x7fff2 #define TODC_TYPE_DS1557_CENTURY 0x7fff8 #define TODC_TYPE_DS1557_FLAGS 0x7fff0 #define TODC_TYPE_DS1643_YEAR 0x1fff #define TODC_TYPE_DS1643_MONTH 0x1ffe #define TODC_TYPE_DS1643_DOM 0x1ffd /* Day of Month */ #define TODC_TYPE_DS1643_DOW 0x1ffc /* Day of Week */ #define TODC_TYPE_DS1643_HOURS 0x1ffb #define TODC_TYPE_DS1643_MINUTES 0x1ffa #define TODC_TYPE_DS1643_SECONDS 0x1ff9 #define TODC_TYPE_DS1643_CNTL_B 0x1ff9 #define TODC_TYPE_DS1643_CNTL_A 0x1ff8 /* control_a R/W regs */ #define TODC_TYPE_DS1643_WATCHDOG 0x1fff #define TODC_TYPE_DS1643_INTERRUPTS 0x1fff #define TODC_TYPE_DS1643_ALARM_DATE 0x1fff #define TODC_TYPE_DS1643_ALARM_HOUR 0x1fff #define TODC_TYPE_DS1643_ALARM_MINUTES 0x1fff #define TODC_TYPE_DS1643_ALARM_SECONDS 0x1fff #define TODC_TYPE_DS1643_CENTURY 0x1ff8 #define TODC_TYPE_DS1643_FLAGS 0x1fff #define TODC_TYPE_DS1693_YEAR 0x09 #define TODC_TYPE_DS1693_MONTH 0x08 #define TODC_TYPE_DS1693_DOM 0x07 /* Day of Month */ #define TODC_TYPE_DS1693_DOW 0x06 /* Day of Week */ #define TODC_TYPE_DS1693_HOURS 0x04 #define TODC_TYPE_DS1693_MINUTES 0x02 #define TODC_TYPE_DS1693_SECONDS 0x00 #define TODC_TYPE_DS1693_CNTL_B 0x0b #define TODC_TYPE_DS1693_CNTL_A 0x0a #define TODC_TYPE_DS1693_WATCHDOG 0xff #define TODC_TYPE_DS1693_INTERRUPTS 0xff #define TODC_TYPE_DS1693_ALARM_DATE 0x49 #define TODC_TYPE_DS1693_ALARM_HOUR 0x05 #define TODC_TYPE_DS1693_ALARM_MINUTES 0x03 #define TODC_TYPE_DS1693_ALARM_SECONDS 0x01 #define TODC_TYPE_DS1693_CENTURY 0x48 #define TODC_TYPE_DS1693_FLAGS 0xff #define TODC_TYPE_DS1743_YEAR 0x1fff #define TODC_TYPE_DS1743_MONTH 0x1ffe #define TODC_TYPE_DS1743_DOM 0x1ffd /* Day of Month */ #define TODC_TYPE_DS1743_DOW 0x1ffc /* Day of Week */ #define TODC_TYPE_DS1743_HOURS 0x1ffb #define TODC_TYPE_DS1743_MINUTES 0x1ffa #define TODC_TYPE_DS1743_SECONDS 0x1ff9 #define TODC_TYPE_DS1743_CNTL_B 0x1ff9 #define TODC_TYPE_DS1743_CNTL_A 0x1ff8 /* control_a R/W regs */ #define TODC_TYPE_DS1743_WATCHDOG 0x1fff #define TODC_TYPE_DS1743_INTERRUPTS 0x1fff #define TODC_TYPE_DS1743_ALARM_DATE 0x1fff #define TODC_TYPE_DS1743_ALARM_HOUR 0x1fff #define TODC_TYPE_DS1743_ALARM_MINUTES 0x1fff #define TODC_TYPE_DS1743_ALARM_SECONDS 0x1fff #define TODC_TYPE_DS1743_CENTURY 0x1ff8 #define TODC_TYPE_DS1743_FLAGS 0x1fff #define TODC_TYPE_DS1746_YEAR 0x1ffff #define TODC_TYPE_DS1746_MONTH 0x1fffe #define TODC_TYPE_DS1746_DOM 0x1fffd /* Day of Month */ #define TODC_TYPE_DS1746_DOW 0x1fffc /* Day of Week */ #define TODC_TYPE_DS1746_HOURS 0x1fffb #define TODC_TYPE_DS1746_MINUTES 0x1fffa #define TODC_TYPE_DS1746_SECONDS 0x1fff9 #define TODC_TYPE_DS1746_CNTL_B 0x1fff9 #define TODC_TYPE_DS1746_CNTL_A 0x1fff8 /* control_a R/W regs */ #define TODC_TYPE_DS1746_WATCHDOG 0x00000 #define TODC_TYPE_DS1746_INTERRUPTS 0x00000 #define TODC_TYPE_DS1746_ALARM_DATE 0x00000 #define TODC_TYPE_DS1746_ALARM_HOUR 0x00000 #define TODC_TYPE_DS1746_ALARM_MINUTES 0x00000 #define TODC_TYPE_DS1746_ALARM_SECONDS 0x00000 #define TODC_TYPE_DS1746_CENTURY 0x00000 #define TODC_TYPE_DS1746_FLAGS 0x00000 #define TODC_TYPE_DS1747_YEAR 0x1ffff #define TODC_TYPE_DS1747_MONTH 0x1fffe #define TODC_TYPE_DS1747_DOM 0x1fffd /* Day of Month */ #define TODC_TYPE_DS1747_DOW 0x1fffc /* Day of Week */ #define TODC_TYPE_DS1747_HOURS 0x1fffb #define TODC_TYPE_DS1747_MINUTES 0x1fffa #define TODC_TYPE_DS1747_SECONDS 0x1fff9 #define TODC_TYPE_DS1747_CNTL_B 0x1fff9 #define TODC_TYPE_DS1747_CNTL_A 0x1fff8 /* control_a R/W regs */ #define TODC_TYPE_DS1747_WATCHDOG 0x00000 #define TODC_TYPE_DS1747_INTERRUPTS 0x00000 #define TODC_TYPE_DS1747_ALARM_DATE 0x00000 #define TODC_TYPE_DS1747_ALARM_HOUR 0x00000 #define TODC_TYPE_DS1747_ALARM_MINUTES 0x00000 #define TODC_TYPE_DS1747_ALARM_SECONDS 0x00000 #define TODC_TYPE_DS1747_CENTURY 0x00000 #define TODC_TYPE_DS1747_FLAGS 0x00000 #define TODC_TYPE_MC146818_YEAR 0x09 #define TODC_TYPE_MC146818_MONTH 0x08 #define TODC_TYPE_MC146818_DOM 0x07 /* Day of Month */ #define TODC_TYPE_MC146818_DOW 0x06 /* Day of Week */ #define TODC_TYPE_MC146818_HOURS 0x04 #define TODC_TYPE_MC146818_MINUTES 0x02 #define TODC_TYPE_MC146818_SECONDS 0x00 #define TODC_TYPE_MC146818_CNTL_B 0x0a #define TODC_TYPE_MC146818_CNTL_A 0x0b /* control_a R/W regs */ #define TODC_TYPE_MC146818_WATCHDOG 0x0c #define TODC_TYPE_MC146818_INTERRUPTS 0x0d #define TODC_TYPE_MC146818_ALARM_DATE 0xff #define TODC_TYPE_MC146818_ALARM_HOUR 0x05 #define TODC_TYPE_MC146818_ALARM_MINUTES 0x03 #define TODC_TYPE_MC146818_ALARM_SECONDS 0x01 #define TODC_TYPE_MC146818_CENTURY 0xff #define TODC_TYPE_MC146818_FLAGS 0xff #define TODC_TYPE_PC97307_YEAR 0x09 #define TODC_TYPE_PC97307_MONTH 0x08 #define TODC_TYPE_PC97307_DOM 0x07 /* Day of Month */ #define TODC_TYPE_PC97307_DOW 0x06 /* Day of Week */ #define TODC_TYPE_PC97307_HOURS 0x04 #define TODC_TYPE_PC97307_MINUTES 0x02 #define TODC_TYPE_PC97307_SECONDS 0x00 #define TODC_TYPE_PC97307_CNTL_B 0x0a #define TODC_TYPE_PC97307_CNTL_A 0x0b /* control_a R/W regs */ #define TODC_TYPE_PC97307_WATCHDOG 0x0c #define TODC_TYPE_PC97307_INTERRUPTS 0x0d #define TODC_TYPE_PC97307_ALARM_DATE 0xff #define TODC_TYPE_PC97307_ALARM_HOUR 0x05 #define TODC_TYPE_PC97307_ALARM_MINUTES 0x03 #define TODC_TYPE_PC97307_ALARM_SECONDS 0x01 #define TODC_TYPE_PC97307_CENTURY 0xff #define TODC_TYPE_PC97307_FLAGS 0xff /* * Define macros to allocate and init the todc_info_t table that will * be used by the todc_time.c routines. */ #define TODC_ALLOC() \ static todc_info_t todc_info_alloc; \ todc_info_t *todc_info = &todc_info_alloc; #define TODC_INIT(clock_type, as0, as1, data, bits) { \ todc_info->rtc_type = ##clock_type##; \ \ todc_info->nvram_as0 = (u_char *)(as0); \ todc_info->nvram_as1 = (u_char *)(as1); \ todc_info->nvram_data = (u_char *)(data); \ \ todc_info->as0_bits = (bits); \ \ todc_info->year = ##clock_type##_YEAR; \ todc_info->month = ##clock_type##_MONTH; \ todc_info->day_of_month = ##clock_type##_DOM; \ todc_info->day_of_week = ##clock_type##_DOW; \ todc_info->hours = ##clock_type##_HOURS; \ todc_info->minutes = ##clock_type##_MINUTES; \ todc_info->seconds = ##clock_type##_SECONDS; \ todc_info->control_b = ##clock_type##_CNTL_B; \ todc_info->control_a = ##clock_type##_CNTL_A; \ todc_info->watchdog = ##clock_type##_WATCHDOG; \ todc_info->interrupts = ##clock_type##_INTERRUPTS; \ todc_info->alarm_date = ##clock_type##_ALARM_DATE; \ todc_info->alarm_hour = ##clock_type##_ALARM_HOUR; \ todc_info->alarm_minutes = ##clock_type##_ALARM_MINUTES; \ todc_info->alarm_seconds = ##clock_type##_ALARM_SECONDS; \ todc_info->century = ##clock_type##_CENTURY; \ todc_info->flags = ##clock_type##_FLAGS; \ } #ifndef BCD_TO_BIN #define BCD_TO_BIN(val) ((val)=((val)&15) + ((val)>>4)*10) #endif #ifndef BIN_TO_BCD #define BIN_TO_BCD(val) ((val)=(((val)/10)<<4) + (val)%10) #endif extern todc_info_t *todc_info; u_char todc_direct_read_val(int addr); void todc_direct_write_val(int addr, unsigned char val); u_char todc_m48txx_read_val(int addr); void todc_m48txx_write_val(int addr, unsigned char val); u_char todc_mc146818_read_val(int addr); void todc_mc146818_write_val(int addr, unsigned char val); long todc_time_init(void); unsigned long todc_get_rtc_time(void); int todc_set_rtc_time(unsigned long nowtime); void todc_calibrate_decr(void); #endif /* __PPC_KERNEL_TODC_H */