/* $NetBSD: em3027reg.h,v 1.1 2018/01/05 03:07:15 uwe Exp $ */ /* * Copyright (c) 2018 Valery Ushakov * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * EM Microelectronic EM3027 RTC */ #ifndef _EM3027REG_H_ #define _EM3027REG_H_ #define EM3027_ADDR 0x56 /* * Control Page: 0 */ #define EM3027_ONOFF 0x00 #define EM3027_ONOFF_CLKOUT 0x80 /* 0: IRQ, 1: CLK */ #define EM3027_ONOFF_SR 0x10 /* self-recovery */ #define EM3027_ONOFF_EEREF 0x08 /* EEPROM self-refresh */ #define EM3027_ONOFF_TR 0x04 /* timer auto-reload */ #define EM3027_ONOFF_TI 0x02 /* timer */ #define EM3027_ONOFF_WA 0x01 /* watch */ #define EM3027_IRQ_CTL 0x01 #define EM3027_IRQ_FLAGS 0x02 /* For both EM3027_IRQ_CTL and EM3027_IRQ_FLAGS */ #define EM3027_IRQ_SR 0x10 /* self-recovery */ #define EM3027_IRQ_V2 0x08 /* VLow2 */ #define EM3027_IRQ_V1 0x04 /* VLow1 */ #define EM3027_IRQ_TINT 0x02 /* timer */ #define EM3027_IRQ_AINT 0x01 /* alarm */ #define EM3027_STATUS 0x03 #define EM3027_STATUS_EEBUSY 0x80 /* r/o: write or self-refresh */ #define EM3027_STATUS_POWER_ON 0x20 #define EM3027_STATUS_RESET 0x10 /* after reset or recovery */ #define EM3027_STATUS_VLOW2 0x08 /* voltage lost */ #define EM3027_STATUS_VLOW1 0x04 /* voltage low */ /* Request system reset */ #define EM3027_RESET 0x04 #define EM3027_RESET_SYSRES 0x10 /* * Watch Page: 1 */ #define EM3027_WATCH_SEC 0x08 /* 0..59 */ #define EM3027_WATCH_MIN 0x09 /* 0..59 */ #define EM3027_WATCH_HOUR 0x0a /* 0..23 or 1..12 */ #define EM3027_WATCH_HOUR_S12 0x40 /* select 12/24 hours */ #define EM3027_WATCH_HOUR_PM 0x20 /* am/pm if 12 hours */ #define EM3027_WATCH_DAY 0x0b /* 1..31 */ #define EM3027_WATCH_WDAY 0x0c /* 1..7 */ #define EM3027_WATCH_MON 0x0d /* 1..12 */ #define EM3027_WATCH_YEAR 0x0e /* 0..79 */ /* * Alarm Page: 2 * * Same format as watch registers except there's no S12 bit in the * hours register and the upper bit (EM3027_ALARM_ENABLE) in each * register selects it for comparison. */ #define EM3027_ALARM_SEC 0x10 #define EM3027_ALARM_MIN 0x11 #define EM3027_ALARM_HOUR 0x12 #define EM3027_ALARM_DATE 0x13 #define EM3027_ALARM_DAYS 0x14 #define EM3027_ALARM_MON 0x15 #define EM3027_ALARM_YEAR 0x16 /* MSB in each alarm register enables comparison */ #define EM3027_ALARM_ENABLE 0x80 /* * Timer Page: 3 */ #define EM3027_TIMER_LO 0x18 #define EM3027_TIMER_HI 0x19 /* * Temperature Page: 4 */ #define EM3027_TEMP 0x20 /* -60..195C */ #define EM3027_TEMP_BASE (-60) /* * EEPROM Control Page: 6 */ #define EM3027_EEPROM_CTL 0x30 /* Trickle charger resistors */ #define EM3027_EEPROM_CHARGER_MASK 0xf0 #define EM3027_EEPROM_R80K 0x80 #define EM3027_EEPROM_R20K 0x40 #define EM3027_EEPROM_R5K 0x20 #define EM3027_EEPROM_R1_5K 0x10 /* Frequency compensated for temperature (0x00 selects raw uncompensated 32768KHz */ #define EM3027_EEPROM_FREQ_MASK 0x0c #define EM3027_EEPROM_FREQ_1HZ 0x0c #define EM3027_EEPROM_FREQ_32HZ 0x08 #define EM3027_EEPROM_FREQ_1024HZ 0x04 #define EM3027_EEPROM_THERM_ENABLE 0x02 #define EM3027_EEPROM_THERM_PERIOD 0x01 /* 0: 1s, 1: 16s */ #endif /* _EM3027REG_H_ */
