ef2ee5d07a
The following pheripherals are supported: UART, MMC, AHCI, EHCI, PCIe, I2C, PMIC, GPIO, CPU temperature and clock. Note: The PCIe driver is pure mash at this moment. It will be reworked immediately when both D5237 and D2579 enter the current tree.
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
/*-
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* Copyright (c) 2016 Michal Meloun <mmel@FreeBSD.org>
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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 THE 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/clock.h>
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#include <sys/kernel.h>
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#include <dev/ofw/ofw_bus.h>
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#include "clock_if.h"
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#include "as3722.h"
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#define AS3722_RTC_START_YEAR 2000
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int
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as3722_rtc_gettime(device_t dev, struct timespec *ts)
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{
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struct as3722_softc *sc;
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struct clocktime ct;
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uint8_t buf[6];
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int rv;
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sc = device_get_softc(dev);
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rv = as3722_read_buf(sc, AS3722_RTC_SECOND, buf, 6);
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if (rv != 0) {
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device_printf(sc->dev, "Failed to read RTC data\n");
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return (rv);
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}
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ct.nsec = 0;
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ct.sec = bcd2bin(buf[0] & 0x7F);
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ct.min = bcd2bin(buf[1] & 0x7F);
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ct.hour = bcd2bin(buf[2] & 0x3F);
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ct.day = bcd2bin(buf[3] & 0x3F);
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ct.mon = bcd2bin(buf[4] & 0x1F);
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ct.year = bcd2bin(buf[5] & 0x7F) + AS3722_RTC_START_YEAR;
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ct.dow = -1;
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return clock_ct_to_ts(&ct, ts);
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}
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int
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as3722_rtc_settime(device_t dev, struct timespec *ts)
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{
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struct as3722_softc *sc;
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struct clocktime ct;
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uint8_t buf[6];
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int rv;
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sc = device_get_softc(dev);
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clock_ts_to_ct(ts, &ct);
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if (ct.year < AS3722_RTC_START_YEAR)
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return (EINVAL);
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buf[0] = bin2bcd(ct.sec);
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buf[1] = bin2bcd(ct.min);
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buf[2] = bin2bcd(ct.hour);
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buf[3] = bin2bcd(ct.day);
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buf[4] = bin2bcd(ct.mon);
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buf[5] = bin2bcd(ct.year - AS3722_RTC_START_YEAR);
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rv = as3722_write_buf(sc, AS3722_RTC_SECOND, buf, 6);
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if (rv != 0) {
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device_printf(sc->dev, "Failed to write RTC data\n");
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return (rv);
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}
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return (0);
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}
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int
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as3722_rtc_attach(struct as3722_softc *sc, phandle_t node)
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{
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int rv;
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/* Enable RTC, set 24 hours mode and alarms */
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rv = RM1(sc, AS3722_RTC_CONTROL,
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AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN | AS3722_RTC_AM_PM_MODE,
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AS3722_RTC_ON | AS3722_RTC_ALARM_WAKEUP_EN);
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if (rv < 0) {
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device_printf(sc->dev, "Failed to initialize RTC controller\n");
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return (ENXIO);
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}
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clock_register(sc->dev, 1000000);
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return (0);
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}
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