111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
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/* $NetBSD: clpsrtc.c,v 1.1 2013/04/28 11:57:13 kiyohara Exp $ */
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/*
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* Copyright (c) 2013 KIYOHARA Takashi
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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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: clpsrtc.c,v 1.1 2013/04/28 11:57:13 kiyohara Exp $");
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#include <sys/param.h>
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#include <sys/bus.h>
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#include <sys/device.h>
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#include <sys/errno.h>
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#include <dev/clock_subr.h>
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#include <arm/clps711x/clps711xreg.h>
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#include <arm/clps711x/clpssocvar.h>
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#include "locators.h"
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struct clpsrtc_softc {
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device_t sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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struct todr_chip_handle sc_todr;
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};
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static int clpsrtc_match(device_t, cfdata_t, void *);
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static void clpsrtc_attach(device_t, device_t, void *);
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/* todr(9) interfaces */
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static int clpsrtc_todr_gettime(todr_chip_handle_t, struct timeval *);
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static int clpsrtc_todr_settime(todr_chip_handle_t, struct timeval *);
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CFATTACH_DECL_NEW(clpsrtc, sizeof(struct clpsrtc_softc),
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clpsrtc_match, clpsrtc_attach, NULL, NULL);
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/* ARGSUSED */
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static int
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clpsrtc_match(device_t parent, cfdata_t match, void *aux)
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{
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return 1;
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}
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/* ARGSUSED */
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static void
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clpsrtc_attach(device_t parent, device_t self, void *aux)
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{
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struct clpsrtc_softc *sc = device_private(self);
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struct clpssoc_attach_args *aa = aux;
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aprint_naive("\n");
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aprint_normal("\n");
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sc->sc_dev = self;
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sc->sc_iot = aa->aa_iot;
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sc->sc_ioh = *aa->aa_ioh;
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/* XXXX: reset to compare registers */
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, PS711X_RTCMR, 0);
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sc->sc_todr.cookie = sc;
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sc->sc_todr.todr_gettime = clpsrtc_todr_gettime;
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sc->sc_todr.todr_settime = clpsrtc_todr_settime;
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sc->sc_todr.todr_setwen = NULL;
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todr_attach(&sc->sc_todr);
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}
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static int
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clpsrtc_todr_gettime(todr_chip_handle_t ch, struct timeval *tv)
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{
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struct clpsrtc_softc *sc = ch->cookie;
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tv->tv_sec = bus_space_read_4(sc->sc_iot, sc->sc_ioh, PS711X_RTCDR);
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tv->tv_usec = 0;
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return 0;
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}
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static int
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clpsrtc_todr_settime(todr_chip_handle_t ch, struct timeval *tv)
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{
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struct clpsrtc_softc *sc = ch->cookie;
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bus_space_write_4(sc->sc_iot, sc->sc_ioh, PS711X_RTCDR, tv->tv_sec);
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return 0;
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}
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