/* $NetBSD: mcclock_mace.c,v 1.17 2015/02/18 16:47:59 macallan Exp $ */ /* * Copyright (c) 2001 Antti Kantee. All Rights Reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright (c) 1998 Mark Brinicombe. * Copyright (c) 1998 Causality Limited. * All rights reserved. * * Written by Mark Brinicombe, Causality Limited * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Mark Brinicombe * for the NetBSD Project. * 4. The name of the company nor the name of the author may be used to * endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY CAUASLITY LIMITED ``AS IS'' AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL CAUSALITY LIMITED OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: mcclock_mace.c,v 1.17 2015/02/18 16:47:59 macallan Exp $"); #include #include #include #include #include #include #include #include #include #include #include struct mcclock_mace_softc { device_t sc_dev; struct todr_chip_handle sc_todrch; bus_space_tag_t sc_st; bus_space_handle_t sc_sh; }; static struct mcclock_mace_softc *mace0 = NULL; static int mcclock_mace_match(device_t, cfdata_t, void *); static void mcclock_mace_attach(device_t, device_t, void *); static int mcclock_mace_gettime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *); static int mcclock_mace_settime_ymdhms(todr_chip_handle_t, struct clock_ymdhms *); unsigned int ds1687_read(void *arg, unsigned int addr); void ds1687_write(void *arg, unsigned int addr, unsigned int data); void mcclock_poweroff(void); CFATTACH_DECL_NEW(mcclock_mace, sizeof(struct mcclock_mace_softc), mcclock_mace_match, mcclock_mace_attach, NULL, NULL); static int mcclock_mace_match(device_t parent, cfdata_t cf, void *aux) { return 1; } void mcclock_mace_attach(device_t parent, device_t self, void *aux) { struct mcclock_mace_softc *sc = device_private(self); struct mace_attach_args *maa = aux; sc->sc_dev = self; sc->sc_st = maa->maa_st; /* XXX should be bus_space_map() */ if (bus_space_subregion(maa->maa_st, maa->maa_sh, maa->maa_offset, 0, &sc->sc_sh)) panic("mcclock_mace_attach: couldn't map"); /* * We want a fixed format: 24-hour, BCD data, so just force the * RTC to this mode; if there was junk there we'll be able to * fix things up later when we discover the time read back is * no good. */ ds1687_write(sc, DS1687_CONTROLA, DS1687_DV1 | DS1687_BANK1); ds1687_write(sc, DS1687_CONTROLB, DS1687_24HRS); /* XXXrkb: init kickstart/wakeup stuff */ if (!(ds1687_read(sc, DS1687_CONTROLD) & DS1687_VRT)) printf(": lithium cell is dead, RTC unreliable"); printf("\n"); sc->sc_todrch.cookie = sc; sc->sc_todrch.todr_gettime_ymdhms = mcclock_mace_gettime_ymdhms; sc->sc_todrch.todr_settime_ymdhms = mcclock_mace_settime_ymdhms; sc->sc_todrch.todr_setwen = NULL; todr_attach(&sc->sc_todrch); mace0 = sc; } /* * We need to use the following two functions from * DS1687_PUT/GETTOD(). Hence the names. */ unsigned int ds1687_read(void *arg, unsigned int addr) { struct mcclock_mace_softc *sc = arg; return bus_space_read_1(sc->sc_st, sc->sc_sh, (addr << 8) + 7); } void ds1687_write(void *arg, unsigned int addr, unsigned int data) { struct mcclock_mace_softc *sc = arg; bus_space_write_1(sc->sc_st, sc->sc_sh, (addr << 8) + 7, data); } static int mcclock_mace_gettime_ymdhms(todr_chip_handle_t todrch, struct clock_ymdhms *dt) { struct mcclock_mace_softc *sc = todrch->cookie; ds1687_todregs regs; int s; s = splhigh(); DS1687_GETTOD(sc, ®s); splx(s); dt->dt_sec = bcdtobin(regs[DS1687_SOFT_SEC]); dt->dt_min = bcdtobin(regs[DS1687_SOFT_MIN]); dt->dt_hour = bcdtobin(regs[DS1687_SOFT_HOUR]); dt->dt_wday = bcdtobin(regs[DS1687_SOFT_DOW]); dt->dt_day = bcdtobin(regs[DS1687_SOFT_DOM]); dt->dt_mon = bcdtobin(regs[DS1687_SOFT_MONTH]); dt->dt_year = bcdtobin(regs[DS1687_SOFT_YEAR]) + (100 * bcdtobin(regs[DS1687_SOFT_CENTURY])); return 0; } static int mcclock_mace_settime_ymdhms(todr_chip_handle_t todrch, struct clock_ymdhms *dt) { struct mcclock_mace_softc *sc = todrch->cookie; ds1687_todregs regs; int s; memset(®s, 0, sizeof(regs)); regs[DS1687_SOFT_SEC] = bintobcd(dt->dt_sec); regs[DS1687_SOFT_MIN] = bintobcd(dt->dt_min); regs[DS1687_SOFT_HOUR] = bintobcd(dt->dt_hour); regs[DS1687_SOFT_DOW] = bintobcd(dt->dt_wday); regs[DS1687_SOFT_DOM] = bintobcd(dt->dt_day); regs[DS1687_SOFT_MONTH] = bintobcd(dt->dt_mon); regs[DS1687_SOFT_YEAR] = bintobcd(dt->dt_year % 100); regs[DS1687_SOFT_CENTURY] = bintobcd(dt->dt_year / 100); s = splhigh(); DS1687_PUTTOD(sc, ®s); splx(s); return 0; } void mcclock_poweroff(void) { uint8_t a, xctl_a, xctl_b; if (mace0 == NULL) return; (void)splhigh(); a = ds1687_read(mace0, DS1687_CONTROLA); a &= ~DS1687_DV2; a |= DS1687_DV1; ds1687_write(mace0, DS1687_CONTROLA, a | DS1687_BANK1); wbflush(); xctl_b = ds1687_read(mace0, DS1687_BANK1_XCTRL4B); xctl_b |= DS1687_X4B_ABE | DS1687_X4B_KIE; ds1687_write(mace0, DS1687_BANK1_XCTRL4B, xctl_b); xctl_a = ds1687_read(mace0, DS1687_BANK1_XCTRL4A); xctl_a &= ~(DS1687_X4A_RCF | DS1687_X4A_WAF | DS1687_X4A_KF); ds1687_write(mace0, DS1687_BANK1_XCTRL4A, xctl_a); wbflush(); /* and down we go */ ds1687_write(mace0, DS1687_BANK1_XCTRL4A, xctl_a | DS1687_X4A_PAB); ds1687_write(mace0, DS1687_CONTROLA, a); wbflush(); for (;;) ; }