614e6d4de9
- Prepare mk48txxvar.h and leave only register definitions in mk48txxreg.h. - Define struct mk48txx_softc as usual devices and allocate necessary members like struct todr_chip_handle in it. - Change mk48txx_attach(), mk48txx_nvwr() and mk48txx_nvrd() to take struct mk48txx_softc.
256 lines
7.2 KiB
C
256 lines
7.2 KiB
C
/* $NetBSD: mk48txx.c,v 1.12 2003/11/01 22:41:42 tsutsui Exp $ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Paul Kranenburg.
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Mostek MK48T02, MK48T08, MK48T59 time-of-day chip subroutines.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: mk48txx.c,v 1.12 2003/11/01 22:41:42 tsutsui Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/errno.h>
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#include <machine/bus.h>
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#include <dev/clock_subr.h>
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#include <dev/ic/mk48txxreg.h>
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#include <dev/ic/mk48txxvar.h>
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int mk48txx_gettime(todr_chip_handle_t, struct timeval *);
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int mk48txx_settime(todr_chip_handle_t, struct timeval *);
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int mk48txx_getcal(todr_chip_handle_t, int *);
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int mk48txx_setcal(todr_chip_handle_t, int);
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u_int8_t mk48txx_def_nvrd(struct mk48txx_softc *, int);
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void mk48txx_def_nvwr(struct mk48txx_softc *, int, u_int8_t);
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struct {
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const char *name;
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bus_size_t nvramsz;
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bus_size_t clkoff;
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int flags;
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#define MK48TXX_EXT_REGISTERS 1 /* Has extended register set */
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} mk48txx_models[] = {
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{ "mk48t02", MK48T02_CLKSZ, MK48T02_CLKOFF, 0 },
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{ "mk48t08", MK48T08_CLKSZ, MK48T08_CLKOFF, 0 },
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{ "mk48t18", MK48T18_CLKSZ, MK48T18_CLKOFF, 0 },
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{ "mk48t59", MK48T59_CLKSZ, MK48T59_CLKOFF, MK48TXX_EXT_REGISTERS },
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};
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void
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mk48txx_attach(sc)
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struct mk48txx_softc *sc;
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{
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todr_chip_handle_t handle;
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int i;
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printf(": %s", sc->sc_model);
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i = sizeof(mk48txx_models) / sizeof(mk48txx_models[0]);
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while (--i >= 0) {
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if (strcmp(sc->sc_model, mk48txx_models[i].name) == 0)
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break;
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}
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if (i < 0)
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panic("mk48txx_attach: unsupported model");
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sc->sc_nvramsz = mk48txx_models[i].nvramsz;
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sc->sc_clkoffset = mk48txx_models[i].clkoff;
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handle = &sc->sc_handle;
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handle->cookie = sc;
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handle->todr_gettime = mk48txx_gettime;
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handle->todr_settime = mk48txx_settime;
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handle->todr_getcal = mk48txx_getcal;
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handle->todr_setcal = mk48txx_setcal;
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handle->todr_setwen = NULL;
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if (sc->sc_nvrd == NULL)
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sc->sc_nvrd = mk48txx_def_nvrd;
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if (sc->sc_nvwr == NULL)
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sc->sc_nvwr = mk48txx_def_nvwr;
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}
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/*
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* Get time-of-day and convert to a `struct timeval'
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* Return 0 on success; an error number otherwise.
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*/
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int
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mk48txx_gettime(handle, tv)
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todr_chip_handle_t handle;
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struct timeval *tv;
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{
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struct mk48txx_softc *sc;
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bus_size_t clkoff;
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struct clock_ymdhms dt;
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int year;
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u_int8_t csr;
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sc = handle->cookie;
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clkoff = sc->sc_clkoffset;
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todr_wenable(handle, 1);
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/* enable read (stop time) */
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csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
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csr |= MK48TXX_CSR_READ;
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
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dt.dt_sec = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_ISEC));
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dt.dt_min = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IMIN));
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dt.dt_hour = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IHOUR));
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dt.dt_day = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IDAY));
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dt.dt_wday = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IWDAY));
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dt.dt_mon = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IMON));
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year = FROMBCD((*sc->sc_nvrd)(sc, clkoff + MK48TXX_IYEAR));
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year += sc->sc_year0;
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if (year < POSIX_BASE_YEAR &&
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(sc->sc_flag & MK48TXX_NO_CENT_ADJUST) == 0)
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year += 100;
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dt.dt_year = year;
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/* time wears on */
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csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
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csr &= ~MK48TXX_CSR_READ;
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
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todr_wenable(handle, 0);
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/* simple sanity checks */
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if (dt.dt_mon > 12 || dt.dt_day > 31 ||
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dt.dt_hour >= 24 || dt.dt_min >= 60 || dt.dt_sec >= 60)
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return EIO;
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tv->tv_sec = clock_ymdhms_to_secs(&dt);
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tv->tv_usec = 0;
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return 0;
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}
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/*
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* Set the time-of-day clock based on the value of the `struct timeval' arg.
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* Return 0 on success; an error number otherwise.
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*/
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int
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mk48txx_settime(handle, tv)
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todr_chip_handle_t handle;
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struct timeval *tv;
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{
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struct mk48txx_softc *sc;
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bus_size_t clkoff;
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struct clock_ymdhms dt;
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u_int8_t csr;
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int year;
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sc = handle->cookie;
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clkoff = sc->sc_clkoffset;
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/* Note: we ignore `tv_usec' */
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clock_secs_to_ymdhms(tv->tv_sec, &dt);
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year = dt.dt_year - sc->sc_year0;
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if (year > 99 &&
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(sc->sc_flag & MK48TXX_NO_CENT_ADJUST) == 0)
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year -= 100;
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todr_wenable(handle, 1);
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/* enable write */
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csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
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csr |= MK48TXX_CSR_WRITE;
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ISEC, TOBCD(dt.dt_sec));
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IMIN, TOBCD(dt.dt_min));
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IHOUR, TOBCD(dt.dt_hour));
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IWDAY, TOBCD(dt.dt_wday));
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IDAY, TOBCD(dt.dt_day));
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IMON, TOBCD(dt.dt_mon));
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_IYEAR, TOBCD(year));
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/* load them up */
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csr = (*sc->sc_nvrd)(sc, clkoff + MK48TXX_ICSR);
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csr &= ~MK48TXX_CSR_WRITE;
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(*sc->sc_nvwr)(sc, clkoff + MK48TXX_ICSR, csr);
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todr_wenable(handle, 0);
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return 0;
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}
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int
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mk48txx_getcal(handle, vp)
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todr_chip_handle_t handle;
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int *vp;
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{
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return EOPNOTSUPP;
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}
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int
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mk48txx_setcal(handle, v)
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todr_chip_handle_t handle;
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int v;
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{
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return EOPNOTSUPP;
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}
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int
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mk48txx_get_nvram_size(handle, vp)
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todr_chip_handle_t handle;
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bus_size_t *vp;
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{
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struct mk48txx_softc *sc;
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sc = handle->cookie;
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*vp = sc->sc_nvramsz;
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return 0;
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}
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u_int8_t
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mk48txx_def_nvrd(struct mk48txx_softc *sc, int off)
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{
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return bus_space_read_1(sc->sc_bst, sc->sc_bsh, off);
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}
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void
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mk48txx_def_nvwr(struct mk48txx_softc *sc, int off, u_int8_t v)
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{
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bus_space_write_1(sc->sc_bst, sc->sc_bsh, off, v);
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}
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