/* $NetBSD: ds1286reg.h,v 1.8 2005/12/11 12:21:26 christos Exp $ */ /* * Copyright (c) 2001 Rafal K. Boni * * 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * 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. */ /* * Originally based on mc146818reg.h, with the following license: * * Copyright (c) 1995 Carnegie-Mellon University. * All rights reserved. * * Permission to use, copy, modify and distribute this software and * its documentation is hereby granted, provided that both the copyright * notice and this permission notice appear in all copies of the * software, derivative works or modified versions, and any portions * thereof, and that both notices appear in supporting documentation. * * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. * * Carnegie Mellon requests users of this software to return to * * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU * School of Computer Science * Carnegie Mellon University * Pittsburgh PA 15213-3890 * * any improvements or extensions that they make and grant Carnegie the * rights to redistribute these changes. */ /* * Definitions for the Dallas Semiconductor DS1286/DS1386 Real Time Clock. * * Plucked right from the Dallas Semicomductor specs available at * http://pdfserv.maxim-ic.com/arpdf/DS1286.pdf and * http://pdfserv.maxim-ic.com/arpdf/DS1386-DS1386P.pdf * * The DS1286 and 1386 have 14 clock-related registers and some amount * of user registers (50 for the 1286, 8K or 32K for the 1386). The * first eleven registers contain time-of-day and alarm data, the rest * contain various control bits and the watchdog timer functionality. * * Since the locations of these ports and the method used to access * them can be machine-dependent, the low-level details of reading * and writing the RTC's registers are handled by machine-specific * functions. * * The DS1286/DS1386 chips always store time-of-day and alarm data in * BCD. The "hour" time-of-year and alarm fields can either be stored * in AM/PM format, or in 24-hour format. If AM/PM format is chosen, * the hour fields can have the values: 1-12 (for AM) and 21-32 (for * PM). If the 24-hour format is chosen, they can have the values 0 * to 23. The hour format is selectable separately for the time and * alarm fields, and is controller by bit 6 of the respective register. */ /* * The registers, and the bits within each register. */ #define DS1286_SUBSEC 0x0 /* Time of year: hundredths of seconds (0-99) */ #define DS1286_SEC 0x1 /* Time of year: seconds (0-59) */ #define DS1286_MIN 0x2 /* Time of year: minutes (0-59) */ #define DS1286_AMIN 0x3 /* Alarm: minutes */ #define DS1286_HOUR 0x4 /* Time of year: hour (see above) */ #define DS1286_HOUR_12MODE 0x40 /* Hour mode: 12-hour (on), 24 (off) */ #define DS1286_HOUR_12HR_PM 0x20 /* AM/PM in 12-hour mode: on = PM */ #define DS1286_HOUR_12HR_MASK 0x1f /* Mask for hours in 12hour mode */ #define DS1286_HOUR_24HR_MASK 0x3f /* Mask for hours in 24hour mode */ #define DS1286_AHOUR 0x5 /* Alarm: hour */ #define DS1286_DOW 0x6 /* Time of year: day of week (1-7) */ #define DS1286_ADOW 0x7 /* Alarm: day of week (1-7) */ #define DS1286_DOM 0x8 /* Time of year: day of month (1-31) */ #define DS1286_MONTH 0x9 /* Time of year: month (1-12), wave generator */ #define DS1286_MONTH_MASK 0x3f /* Mask to extract month */ #define DS1286_WAVEGEN_MASK 0xc0 /* Mask to extract wave bits */ #define DS1286_YEAR 0xA /* Time of year: year in century (0-99) */ #define DS1286_CONTROL 0xB /* Control register A */ #define DS1286_TE 0x80 /* Update in progress (on == disable update) */ #define DS1286_INTSWAP 0x40 /* Swap INTA, INTB outputs */ #define DS1286_INTBSRC 0x20 /* INTB source (on) or sink (off) current */ #define DS1286_INTAPLS 0x10 /* INTA pulse (on) or level (off) mode */ #define DS1286_WAM 0x08 /* Watchdog alarm mask */ #define DS1286_TDM 0x04 /* Time-of-day alarm mask */ #define DS1286_WAF 0x02 /* Watchdog alarm flag */ #define DS1286_TDF 0x01 /* Time-of-day alarm flag */ #define DS1286_NREGS 0xd /* 14 registers; CMOS follows */ #define DS1286_NTODREGS 0xb /* 11 of those regs are for TOD and alarm */ #define DS1286_NVRAM_START 0xe /* start of NVRAM: offset 14 */ /* NVRAM size depends on the chip -- the 1286 only has 50 bytes, whereas * the 1386 can have 8K or 32K */ #define DS1286_NVRAM_SIZE 50 /* 50 bytes of NVRAM */ /* * RTC register/NVRAM read and write functions -- machine-dependent. * Appropriately manipulate RTC registers to get/put data values. */ u_int ds1286_read(void *, u_int); void ds1286_write(void *, u_int, u_int); /* * A collection of TOD/Alarm registers. */ typedef u_int ds1286_todregs[DS1286_NTODREGS]; /* * Get all of the TOD/Alarm registers * Must be called at splhigh(), and with the RTC properly set up. */ #define DS1286_GETTOD(sc, regs) \ do { \ int i; \ u_int ctl; \ \ /* turn off update for now */ \ ctl = ds1286_read(sc, DS1286_CONTROL); \ ds1286_write(sc, DS1286_CONTROL, ctl | DS1286_TE); \ \ /* read all of the tod/alarm regs */ \ for (i = 0; i < DS1286_NTODREGS; i++) \ (*regs)[i] = ds1286_read(sc, i); \ \ /* turn update back on */ \ ds1286_write(sc, DS1286_CONTROL, ctl); \ } while (0); /* * Set all of the TOD/Alarm registers * Must be called at splhigh(), and with the RTC properly set up. */ #define DS1286_PUTTOD(sc, regs) \ do { \ int i; \ u_int ctl; \ \ /* turn off update for now */ \ ctl = ds1286_read(sc, DS1286_CONTROL); \ ds1286_write(sc, DS1286_CONTROL, ctl | DS1286_TE); \ \ /* write all of the tod/alarm regs */ \ for (i = 0; i < DS1286_NTODREGS; i++) \ ds1286_write(sc, i, (*regs)[i]); \ \ /* turn update back on */ \ ds1286_write(sc, DS1286_CONTROL, ctl); \ } while (0);