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ds1307reg.h revision 1.1 
      1 /*	$NetBSD: ds1307reg.h,v 1.1 2003/09/30 00:35:31 thorpej Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2003 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Steve C. Woodford for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _DEV_I2C_DS1307REG_H_
     39 #define _DEV_I2C_DS1307REG_H_
     40 
     41 /*
     42  * DS1307 64x8 Serial Real-Time Clock
     43  */
     44 
     45 #define	DS1307_ADDR		0x68	/* Fixed I2C Slave Address */
     46 
     47 #define DS1307_SECONDS		0x00
     48 #define DS1307_MINUTES		0x01
     49 #define DS1307_HOURS		0x02
     50 #define DS1307_DAY		0x03
     51 #define DS1307_DATE		0x04
     52 #define DS1307_MONTH		0x05
     53 #define DS1307_YEAR		0x06
     54 #define DS1307_CONTROL		0x07
     55 #define	DS1307_NVRAM_START	0x08
     56 #define	DS1307_NVRAM_END	0x3f
     57 
     58 #define	DS1307_NRTC_REGS	8
     59 #define	DS1307_NVRAM_SIZE	((DS1307_NVRAM_END - DS1307_NVRAM_START) + 1)
     60 
     61 /*
     62  * Bit definitions.
     63  */
     64 #define	DS1307_SECONDS_CH	(1u << 7)	/* Clock Hold */
     65 #define	DS1307_SECONDS_MASK	0x7f
     66 #define	DS1307_MINUTES_MASK	0x7f
     67 #define	DS1307_HOURS_24HRS	(1u << 6)	/* Set for 24 hour mode */
     68 #define	DS1307_HOURS_12HRS_PM	(1u << 5)	/* If 12 hr mode, set = PM */
     69 #define	DS1307_HOURS_12MASK	0x1f
     70 #define	DS1307_HOURS_24MASK	0x3f
     71 #define	DS1307_DAY_MASK		0x07
     72 #define	DS1307_DATE_MASK	0x3f
     73 #define	DS1307_MONTH_MASK	0x1f
     74 #define	DS1307_CONTROL_OUT	(1u << 7)	/* OSC/OUT pin value */
     75 #define	DS1307_CONTROL_SQWE	(1u << 4)	/* Enable square wave output */
     76 #define	DS1307_CONTROL_1HZ	0
     77 #define	DS1307_CONTROL_4096HZ	1
     78 #define	DS1307_CONTROL_8192HZ	2
     79 #define	DS1307_CONTROL_32768HZ	3
     80 
     81 #endif /* _DEV_I2C_DS1307REG_H_ */
     82