max6900reg.h

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    1 /*      $NetBSD: max6900reg.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_MAX6900REG_H_
   39 #define _DEV_I2C_MAX6900REG_H_
   40 
   41 /*
   42  * MAX6900 RTC I2C address:
   43  *
   44  *      101 0000
   45  */
   46 #define MAX6900_ADDRMASK                0x7f
   47 #define MAX6900_ADDR                    0x50
   48 
   49 /*
   50  * Command/Addresses
   51  */
   52 #define MAX6900_CMD_WRITE               0x00
   53 #define MAX6900_CMD_READ                0x01
   54 
   55 #define MAX6900_REG_SECOND              0x80
   56 #define MAX6900_REG_MINUTE              0x82
   57 #define MAX6900_REG_HOUR                0x84
   58 #define MAX6900_REG_DATE                0x86
   59 #define MAX6900_REG_MONTH               0x88
   60 #define MAX6900_REG_DAY                 0x8a
   61 #define MAX6900_REG_YEAR                0x8c
   62 #define MAX6900_REG_CONTROL             0x8e
   63 #define MAX6900_REG_CENTURY             0x92
   64 #define MAX6900_REG_CLK_BURST           0xbe
   65 
   66 #define MAX6900_REG_RAM(addr)           ((addr << 1) + 0xc0)
   67 #define MAX6900_REG_RAM_BURST           0xfe
   68 
   69 /*
   70  * Burst Read/Write register layout
   71  */
   72 #define MAX6900_BURST_SECOND            0
   73 #define MAX6900_BURST_MINUTE            1
   74 #define MAX6900_BURST_HOUR              2
   75 #define MAX6900_BURST_DATE              3
   76 #define MAX6900_BURST_MONTH             4
   77 #define MAX6900_BURST_WDAY              5
   78 #define MAX6900_BURST_YEAR              6
   79 #define MAX6900_BURST_CONTROL           7
   80 #define MAX6900_BURST_LEN               8
   81 
   82 /*
   83  * Register bits
   84  */
   85 #define MAX6900_SECOND_MASK             0x7f
   86 #define MAX6900_MINUTE_MASK             0x7f
   87 #define MAX6900_HOUR_12HRS              (1u << 7)
   88 #define MAX6900_HOUR_12MASK             0x1f
   89 #define MAX6900_HOUR_12HRS_PM           (1u << 5)
   90 #define MAX6900_HOUR_24MASK             0x3f
   91 #define MAX6900_DATE_MASK               0x3f
   92 #define MAX6900_MONTH_MASK              0x1f
   93 #define MAX6900_CONTROL_WP              (1u << 7)
   94 
   95 /*
   96  * NVRAM size
   97  */
   98 #define MAX6900_RAM_BYTES               31
   99 
  100 #endif /* _DEV_I2C_MAX6900REG_H_ */

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sys/dev/i2c/max6900reg.h