71e3c3083b
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
110 lines
3.9 KiB
C
110 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (C) 2006-2008 Semihalf, Grzegorz Bernacki
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _DEV_RTC_DS1553_H_
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#define _DEV_RTC_DS1553_H_
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/* DS1553 registers */
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#define DS1553_NVRAM_SIZE 0x1ff0
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#define DS1553_OFF_FLAGS 0x1ff0
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#define DS1553_OFF_ALARM_SECONDS 0x1ff2
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#define DS1553_OFF_ALARM_MINUTES 0x1ff3
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#define DS1553_OFF_ALARM_HOURS 0x1ff4
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#define DS1553_OFF_ALARM_DATE 0x1ff5
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#define DS1553_OFF_INTERRUPTS 0x1ff6
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#define DS1553_OFF_WATCHDOG 0x1ff7
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#define DS1553_OFF_CONTROL 0x1ff8
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#define DS1553_OFF_SECONDS 0x1ff9
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#define DS1553_OFF_MINUTES 0x1ffa
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#define DS1553_OFF_HOURS 0x1ffb
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#define DS1553_OFF_DAYOFWEEK 0x1ffc
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#define DS1553_OFF_DATE 0x1ffd
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#define DS1553_OFF_MONTH 0x1ffe
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#define DS1553_OFF_YEAR 0x1fff
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/* dayofweek register's bits */
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#define DS1553_BIT_FREQ_TEST 0x40 /* frequency test bit */
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/* seconds register's bit */
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#define DS1553_BIT_OSC 0x80 /* oscillator start/stop bit */
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/* control register's bits */
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#define DS1553_BIT_WRITE 0x80 /* write */
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#define DS1553_BIT_READ 0x40 /* read */
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/* watchdog register's bits */
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#define DS1553_BIT_WATCHDOG 0x80 /* watchdog steering bit */
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#define DS1553_BIT_BMB4 0x40 /* watchdog multiplier bit4 */
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#define DS1553_BIT_BMB3 0x20 /* watchdog multiplier bit3 */
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#define DS1553_BIT_BMB2 0x10 /* watchdog multiplier bit2 */
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#define DS1553_BIT_BMB1 0x8 /* watchdog multiplier bit1 */
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#define DS1553_BIT_BMB0 0x4 /* watchdog multiplier bit0 */
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#define DS1553_BIT_RB1 0x2 /* watchdog resolution bit1 */
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#define DS1553_BIT_RB0 0x1 /* watchdog resolution bit0 */
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/* alarm seconds/minutes/hours/date register's bit */
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#define DS1553_BIT_AM 0x80 /* alarm mask bit */
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/* flag register's bits */
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#define DS1553_BIT_BLF 0x10 /* battery flag */
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#define DS1553_BIT_WF 0x80 /* watchdog flag */
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/* register's mask */
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#define DS1553_MASK_MONTH 0x1f
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#define DS1553_MASK_DATE 0x3f
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#define DS1553_MASK_DAYOFWEEK 0x7
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#define DS1553_MASK_HOUR 0x3f
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#define DS1553_MASK_MINUTES 0x7f
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#define DS1553_MASK_SECONDS 0x7f
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struct ds1553_softc {
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bus_space_tag_t sc_bst; /* bus space tag */
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bus_space_handle_t sc_bsh; /* bus space handle */
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int rid; /* resource id */
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struct resource *res;
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struct mtx sc_mtx; /* hardware mutex */
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uint32_t year_offset;
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/* read/write functions */
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uint8_t (*sc_read)(device_t, bus_size_t);
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void (*sc_write)(device_t, bus_size_t, uint8_t);
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};
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/* device interface */
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int ds1553_attach(device_t);
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/* clock interface */
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int ds1553_gettime(device_t, struct timespec *);
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int ds1553_settime(device_t, struct timespec *);
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#endif /* _DEV_RTC_DS1553_H_ */
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