/* $NetBSD: mk48txx.c,v 1.16 2004/12/29 21:33:42 bjh21 Exp $ */ /*- * Copyright (c) 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Paul Kranenburg. * * 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 the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``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 THE FOUNDATION 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. */ /* * Mostek MK48T02, MK48T08, MK48T59 time-of-day chip subroutines. */ #include __KERNEL_RCSID(0, "$NetBSD: mk48txx.c,v 1.16 2004/12/29 21:33:42 bjh21 Exp $"); #include #include #include #include #include #include #include #include int mk48txx_gettime(todr_chip_handle_t, struct timeval *); int mk48txx_settime(todr_chip_handle_t, struct timeval *); int mk48txx_getcal(todr_chip_handle_t, int *); int mk48txx_setcal(todr_chip_handle_t, int); u_int8_t mk48txx_def_nvrd(struct mk48txx_softc *, int); void mk48txx_def_nvwr(struct mk48txx_softc *, int, u_int8_t); struct { const char *name; bus_size_t nvramsz; bus_size_t clkoff; int flags; #define MK48TXX_EXT_REGISTERS 1 /* Has extended register set */ } mk48txx_models[] = { { "mk48t02", MK48T02_CLKSZ, MK48T02_CLKOFF, 0 }, { "mk48t08", MK48T08_CLKSZ, MK48T08_CLKOFF, 0 }, { "mk48t18", MK48T18_CLKSZ, MK48T18_CLKOFF, 0 }, { "mk48t59", MK48T59_CLKSZ, MK48T59_CLKOFF, MK48TXX_EXT_REGISTERS }, }; void mk48txx_attach(sc) struct mk48txx_softc *sc; { todr_chip_handle_t handle; int i; printf(": %s", sc->sc_model); i = sizeof(mk48txx_models) / sizeof(mk48txx_models[0]); while (--i >= 0) { if (strcmp(sc->sc_model, mk48txx_models[i].name) == 0) break; } if (i < 0) panic("mk48txx_attach: unsupported model"); sc->sc_nvramsz = mk48txx_models[i].nvramsz; sc->sc_clkoffset = mk48txx_models[i].clkoff; handle = &sc->sc_handle; handle->cookie = sc; handle->todr_gettime = mk48txx_gettime; handle->todr_settime = mk48txx_settime; handle->todr_getcal = mk48txx_getcal; handle->todr_setcal = mk48txx_setcal; handle->todr_setwen = NULL; if (sc->sc_nvrd == NULL) sc->sc_nvrd = mk48txx_def_nvrd; if (sc->sc_nvwr == NULL) sc->sc_nvwr = mk48txx_def_nvwr; } /* * Get time-of-day and convert to a `struct timeval' * Return 0 on success; an error number otherwise. */ int mk48txx_gettime(handle, tv) todr_chip_handle_t handle; struct timeval *tv; { struct mk48txx_softc *sc; bus_size_t clkoff; struct clock_ymdhms dt; int year; u_int8_t csr; sc = handle->cookie; clkoff = sc->sc_clkoffset; todr_wenable(handle, 1); /* enable read (stop time) */ csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR); csr |= MK48TXX_CSR_READ; (*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr); dt.dt_sec = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_ISEC)); dt.dt_min = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IMIN)); dt.dt_hour = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IHOUR)); dt.dt_day = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IDAY)); dt.dt_wday = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IWDAY)); dt.dt_mon = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IMON)); year = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IYEAR)); year += sc->sc_year0; if (year < POSIX_BASE_YEAR && (sc->sc_flag & MK48TXX_NO_CENT_ADJUST) == 0) year += 100; dt.dt_year = year; /* time wears on */ csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR); csr &= ~MK48TXX_CSR_READ; (*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr); todr_wenable(handle, 0); /* simple sanity checks */ if (dt.dt_mon > 12 || dt.dt_day > 31 || dt.dt_hour >= 24 || dt.dt_min >= 60 || dt.dt_sec >= 60) return EIO; tv->tv_sec = clock_ymdhms_to_secs(&dt); if (tv->tv_sec == -1) return ERANGE; tv->tv_usec = 0; return 0; } /* * Set the time-of-day clock based on the value of the `struct timeval' arg. * Return 0 on success; an error number otherwise. */ int mk48txx_settime(handle, tv) todr_chip_handle_t handle; struct timeval *tv; { struct mk48txx_softc *sc; bus_size_t clkoff; struct clock_ymdhms dt; u_int8_t csr; int year; long sec; sc = handle->cookie; clkoff = sc->sc_clkoffset; /* Note: we ignore `tv_usec' */ sec = tv->tv_sec + ((tv->tv_usec < 500000) ? 0 : 1); clock_secs_to_ymdhms(sec, &dt); year = dt.dt_year - sc->sc_year0; if (year > 99 && (sc->sc_flag & MK48TXX_NO_CENT_ADJUST) == 0) year -= 100; todr_wenable(handle, 1); /* enable write */ csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR); csr |= MK48TXX_CSR_WRITE; (*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr); (*sc->sc_nvwr)(sc, clkoff + MK48TXX_ISEC, TOBCD(dt.dt_sec)); (*sc->sc_nvwr)(sc, clkoff + MK48TXX_IMIN, TOBCD(dt.dt_min)); (*sc->sc_nvwr)(sc, clkoff + MK48TXX_IHOUR, TOBCD(dt.dt_hour)); (*sc->sc_nvwr)(sc, clkoff + MK48TXX_IWDAY, TOBCD(dt.dt_wday)); (*sc->sc_nvwr)(sc, clkoff + MK48TXX_IDAY, TOBCD(dt.dt_day)); (*sc->sc_nvwr)(sc, clkoff + MK48TXX_IMON, TOBCD(dt.dt_mon)); (*sc->sc_nvwr)(sc, clkoff + MK48TXX_IYEAR, TOBCD(year)); /* load them up */ csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR); csr &= ~MK48TXX_CSR_WRITE; (*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr); todr_wenable(handle, 0); return 0; } int mk48txx_getcal(handle, vp) todr_chip_handle_t handle; int *vp; { return EOPNOTSUPP; } int mk48txx_setcal(handle, v) todr_chip_handle_t handle; int v; { return EOPNOTSUPP; } int mk48txx_get_nvram_size(handle, vp) todr_chip_handle_t handle; bus_size_t *vp; { struct mk48txx_softc *sc; sc = handle->cookie; *vp = sc->sc_nvramsz; return 0; } u_int8_t mk48txx_def_nvrd(struct mk48txx_softc *sc, int off) { return bus_space_read_1(sc->sc_bst, sc->sc_bsh, off); } void mk48txx_def_nvwr(struct mk48txx_softc *sc, int off, u_int8_t v) { bus_space_write_1(sc->sc_bst, sc->sc_bsh, off, v); }