1 /* $NetBSD: max6900reg.h,v 1.3 2013/08/07 19:38:45 soren 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 0x3ff 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_ */ 101
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