1 /*- 2 * Copyright (C) 2006-2008 Semihalf, Grzegorz Bernacki 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _DEV_RTC_DS1553_H_ 30 #define _DEV_RTC_DS1553_H_ 31 32 /* DS1553 registers */ 33 #define DS1553_NVRAM_SIZE 0x1ff0 34 #define DS1553_OFF_FLAGS 0x1ff0 35 #define DS1553_OFF_ALARM_SECONDS 0x1ff2 36 #define DS1553_OFF_ALARM_MINUTES 0x1ff3 37 #define DS1553_OFF_ALARM_HOURS 0x1ff4 38 #define DS1553_OFF_ALARM_DATE 0x1ff5 39 #define DS1553_OFF_INTERRUPTS 0x1ff6 40 #define DS1553_OFF_WATCHDOG 0x1ff7 41 #define DS1553_OFF_CONTROL 0x1ff8 42 #define DS1553_OFF_SECONDS 0x1ff9 43 #define DS1553_OFF_MINUTES 0x1ffa 44 #define DS1553_OFF_HOURS 0x1ffb 45 #define DS1553_OFF_DAYOFWEEK 0x1ffc 46 #define DS1553_OFF_DATE 0x1ffd 47 #define DS1553_OFF_MONTH 0x1ffe 48 #define DS1553_OFF_YEAR 0x1fff 49 50 /* dayofweek register's bits */ 51 #define DS1553_BIT_FREQ_TEST 0x40 /* frequency test bit */ 52 53 /* seconds register's bit */ 54 #define DS1553_BIT_OSC 0x80 /* oscillator start/stop bit */ 55 56 /* control register's bits */ 57 #define DS1553_BIT_WRITE 0x80 /* write */ 58 #define DS1553_BIT_READ 0x40 /* read */ 59 60 /* watchdog register's bits */ 61 #define DS1553_BIT_WATCHDOG 0x80 /* watchdog steering bit */ 62 #define DS1553_BIT_BMB4 0x40 /* watchdog multiplier bit4 */ 63 #define DS1553_BIT_BMB3 0x20 /* watchdog multiplier bit3 */ 64 #define DS1553_BIT_BMB2 0x10 /* watchdog multiplier bit2 */ 65 #define DS1553_BIT_BMB1 0x8 /* watchdog multiplier bit1 */ 66 #define DS1553_BIT_BMB0 0x4 /* watchdog multiplier bit0 */ 67 #define DS1553_BIT_RB1 0x2 /* watchdog resolution bit1 */ 68 #define DS1553_BIT_RB0 0x1 /* watchdog resolution bit0 */ 69 70 /* alarm seconds/minutes/hours/date register's bit */ 71 #define DS1553_BIT_AM 0x80 /* alarm mask bit */ 72 73 /* flag register's bits */ 74 #define DS1553_BIT_BLF 0x10 /* battery flag */ 75 #define DS1553_BIT_WF 0x80 /* watchdog flag */ 76 77 /* register's mask */ 78 #define DS1553_MASK_MONTH 0x1f 79 #define DS1553_MASK_DATE 0x3f 80 #define DS1553_MASK_DAYOFWEEK 0x7 81 #define DS1553_MASK_HOUR 0x3f 82 #define DS1553_MASK_MINUTES 0x7f 83 #define DS1553_MASK_SECONDS 0x7f 84 85 struct ds1553_softc { 86 87 bus_space_tag_t sc_bst; /* bus space tag */ 88 bus_space_handle_t sc_bsh; /* bus space handle */ 89 90 int rid; /* resource id */ 91 struct resource *res; 92 struct mtx sc_mtx; /* hardware mutex */ 93 94 uint32_t year_offset; 95 /* read/write functions */ 96 uint8_t (*sc_read)(device_t, bus_size_t); 97 void (*sc_write)(device_t, bus_size_t, uint8_t); 98 }; 99 100 /* device interface */ 101 int ds1553_attach(device_t); 102 103 /* clock interface */ 104 int ds1553_gettime(device_t, struct timespec *); 105 int ds1553_settime(device_t, struct timespec *); 106 107 #endif /* _DEV_RTC_DS1553_H_ */ 108