1 /* $NetBSD: intersil7170reg.h,v 1.2 2008/04/28 20:23:50 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1996 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Adam Glass. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _INTERSIL7170REG_H_ 33 #define _INTERSIL7170REG_H_ 34 35 /* 36 * Driver support for the intersil7170 used in sun[34]s to provide 37 * real time clock and time-of-day support. 38 * 39 * Derived from: datasheet "ICM7170 a uP-Compatible Real-Time Clock" 40 * document #301680-005, Dec 85 41 * 42 * Note that this device provides both time-of-day and interval timer 43 * functionality. Both functions use the same control registers. On top 44 * of that, the command control register is write-only. Currently, this 45 * driver assumes that the interval timer is to be enabled, and hence 46 * always sets/restores the INTERSIL_CMD_IENABLE control bit when 47 * manipulating the TOD. 48 */ 49 50 struct intersil_dt { /* from p. 7 of 10 */ 51 uint8_t dt_csec; 52 uint8_t dt_hour; 53 uint8_t dt_min; 54 uint8_t dt_sec; 55 uint8_t dt_month; 56 uint8_t dt_day; 57 uint8_t dt_year; 58 uint8_t dt_dow; 59 }; 60 61 struct intersil7170 { 62 struct intersil_dt counters; 63 struct intersil_dt clk_ram; /* should be ok as both are word aligned */ 64 uint8_t clk_intr_reg; 65 uint8_t clk_cmd_reg; 66 }; 67 68 /* Indices to time-of-day clock registers */ 69 #define INTERSIL_ICSEC 0 70 #define INTERSIL_IHOUR 1 71 #define INTERSIL_IMIN 2 72 #define INTERSIL_ISEC 3 73 #define INTERSIL_IMON 4 74 #define INTERSIL_IDAY 5 75 #define INTERSIL_IYEAR 6 76 #define INTERSIL_IDOW 7 77 78 #define INTERSIL_IINTR 16 79 #define INTERSIL_ICMD 17 80 81 /* bit assignments for command register, p. 6 of 10, write-only */ 82 #define INTERSIL_CMD_FREQ_32K 0x0 83 #define INTERSIL_CMD_FREQ_1M 0x1 84 #define INTERSIL_CMD_FREQ_2M 0x2 85 #define INTERSIL_CMD_FREQ_4M 0x3 86 87 #define INTERSIL_CMD_12HR_MODE 0x0 88 #define INTERSIL_CMD_24HR_MODE 0x4 89 90 #define INTERSIL_CMD_STOP 0x0 91 #define INTERSIL_CMD_RUN 0x8 92 93 #define INTERSIL_CMD_IDISABLE 0x0 94 #define INTERSIL_CMD_IENABLE 0x10 95 96 #define INTERSIL_CMD_TEST_MODE 0x20 97 #define INTERSIL_CMD_NORMAL_MODE 0x0 98 99 #define INTERSIL_COMMAND(run, interrupt) \ 100 ((run) | (interrupt) | INTERSIL_CMD_FREQ_32K | \ 101 INTERSIL_CMD_24HR_MODE | INTERSIL_CMD_NORMAL_MODE) 102 103 /* bit assignments for interrupt register r/w, p 7 of 10 */ 104 105 #define INTERSIL_INTER_ALARM 0x1 /* r/w */ 106 #define INTERSIL_INTER_CSECONDS 0x2 /* r/w */ 107 #define INTERSIL_INTER_DSECONDS 0x4 /* r/w */ 108 #define INTERSIL_INTER_SECONDS 0x8 /* r/w */ 109 #define INTERSIL_INTER_MINUTES 0x10 /* r/w */ 110 #define INTERSIL_INTER_HOURS 0x20 /* r/w */ 111 #define INTERSIL_INTER_DAYS 0x40 /* r/w */ 112 #define INTERSIL_INTER_PENDING 0x80 /* read-only */ 113 114 #define INTERSIL_INTER_BITS \ 115 "\20\10PENDING\7DAYS\6HRS\5MIN\4SCDS\3DSEC\2CSEC\1ALARM" 116 117 #endif /* _INTERSIL7170REG_H_ */ 118