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      1 /*	$NetBSD: ds1307reg.h,v 1.8 2016/10/18 18:54:54 aymeric 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 #define	MCP7940_ADDR		0x6f
     47 
     48 #define DSXXXX_SECONDS		0x00
     49 #define DSXXXX_MINUTES		0x01
     50 #define DSXXXX_HOURS		0x02
     51 #define DSXXXX_DAY		0x03
     52 #define DSXXXX_DATE		0x04
     53 #define DSXXXX_MONTH		0x05
     54 #define DSXXXX_YEAR		0x06
     55 #define	DSXXXX_RTC_SIZE		7
     56 
     57 #define DS1307_CONTROL		0x07
     58 #define	DS1307_RTC_START	0
     59 #define	DS1307_RTC_SIZE		DSXXXX_RTC_SIZE
     60 #define	DS1307_NVRAM_START	0x08
     61 #define	DS1307_NVRAM_SIZE	0x38
     62 
     63 #define DS1339_CONTROL		0x0e
     64 #define	DS1339_RTC_START	0
     65 #define	DS1339_RTC_SIZE		DSXXXX_RTC_SIZE
     66 #define	DS1339_NVRAM_START	0
     67 #define	DS1339_NVRAM_SIZE	0
     68 
     69 #define	DS1340_RTC_START	0
     70 #define	DS1340_RTC_SIZE		DSXXXX_RTC_SIZE
     71 #define	DS1340_SECONDS_EOSC		(1 << 7) /* Clock Hold */
     72 
     73 #define DS1672_CNTR1		0x00
     74 #define DS1672_CNTR2		0x01
     75 #define DS1672_CNTR3		0x02
     76 #define DS1672_CNTR4		0x03
     77 #define DS1672_CONTROL		0x04
     78 #define DS1672_CONTROL_CH		(1 << 7) /* clock hold */
     79 #define DS1672_TRICKLE		0x05
     80 
     81 #define DS1672_RTC_START	0
     82 #define DS1672_RTC_SIZE		4
     83 #define	DS1672_NVRAM_START	0
     84 #define	DS1672_NVRAM_SIZE	0
     85 
     86 #define DS3232_CONTROL		0x0e
     87 #define DS3232_CSR		0x0f
     88 #define	DS3232_RTC_START	0
     89 #define	DS3232_RTC_SIZE		DSXXXX_RTC_SIZE
     90 #define DS3232_TEMP_MSB		0x11
     91 #define DS3232_TEMP_LSB		0x12
     92 #define	DS3232_NVRAM_START	0x14
     93 #define	DS3232_NVRAM_SIZE	0xec
     94 
     95 #define	MCP7940_NVRAM_START	0x20
     96 #define	MCP7940_NVRAM_SIZE	0x40
     97 
     98 /*
     99  * Bit definitions.
    100  */
    101 #define	DSXXXX_SECONDS_MASK	0x7f
    102 #define	DSXXXX_MINUTES_MASK	0x7f
    103 #define	DSXXXX_HOURS_12HRS_MODE	(1u << 6)	/* Set for 12 hour mode */
    104 #define	DSXXXX_HOURS_12HRS_PM	(1u << 5)	/* If 12 hr mode, set = PM */
    105 #define	DSXXXX_HOURS_12MASK	0x1f
    106 #define	DSXXXX_HOURS_24MASK	0x3f
    107 #define	DSXXXX_DAY_MASK		0x07
    108 #define	DSXXXX_DATE_MASK	0x3f
    109 #define	DSXXXX_MONTH_MASK	0x1f
    110 #define	DSXXXX_MONTH_CENTURY	0x80
    111 
    112 #define	DS1307_SECONDS_CH	(1u << 7)	/* Clock Hold */
    113 #define	DS1307_CONTROL_OUT	(1u << 7)	/* OSC/OUT pin value */
    114 #define	DS1307_CONTROL_SQWE	(1u << 4)	/* Enable square wave output */
    115 #define	DS1307_CONTROL_1HZ	0
    116 #define	DS1307_CONTROL_4096HZ	1
    117 #define	DS1307_CONTROL_8192HZ	2
    118 #define	DS1307_CONTROL_32768HZ	3
    119 
    120 #define	DSXXXX_CONTROL_DOSC	(1u << 7)	/* Disable Oscillator */
    121 
    122 #define	MCP7940_TOD_DAY_VBATEN	(1u << 3)	/* Enable battery backup */
    123 
    124 #endif /* _DEV_I2C_DS1307REG_H_ */
    125