102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/* $NetBSD: eprtc.c,v 1.6 2012/10/27 17:17:37 chs Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2005 HAMAJIMA Katsuomi. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: eprtc.c,v 1.6 2012/10/27 17:17:37 chs Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/device.h>
|
|
#include <dev/clock_subr.h>
|
|
#include <sys/bus.h>
|
|
#include <arm/ep93xx/ep93xxvar.h>
|
|
#include <arm/ep93xx/epsocvar.h>
|
|
#include <arm/ep93xx/eprtcreg.h>
|
|
|
|
struct eprtc_softc {
|
|
bus_space_tag_t sc_iot;
|
|
bus_space_handle_t sc_ioh;
|
|
struct todr_chip_handle sc_todr;
|
|
};
|
|
|
|
static int eprtc_match(device_t, cfdata_t, void *);
|
|
static void eprtc_attach(device_t, device_t, void *);
|
|
|
|
CFATTACH_DECL_NEW(eprtc, sizeof(struct eprtc_softc),
|
|
eprtc_match, eprtc_attach, NULL, NULL);
|
|
|
|
static int eprtc_gettime(struct todr_chip_handle *, struct timeval *);
|
|
static int eprtc_settime(struct todr_chip_handle *, struct timeval *);
|
|
|
|
static int
|
|
eprtc_match(device_t parent, cfdata_t match, void *aux)
|
|
{
|
|
return 1;
|
|
}
|
|
|
|
static void
|
|
eprtc_attach(device_t parent, device_t self, void *aux)
|
|
{
|
|
struct eprtc_softc *sc = device_private(self);
|
|
struct epsoc_attach_args *sa = aux;
|
|
|
|
printf("\n");
|
|
sc->sc_iot = sa->sa_iot;
|
|
|
|
if (bus_space_map(sa->sa_iot, sa->sa_addr,
|
|
sa->sa_size, 0, &sc->sc_ioh)) {
|
|
printf("%s: Cannot map registers", device_xname(self));
|
|
return;
|
|
}
|
|
|
|
sc->sc_todr.cookie = sc;
|
|
sc->sc_todr.todr_gettime = eprtc_gettime;
|
|
sc->sc_todr.todr_settime = eprtc_settime;
|
|
sc->sc_todr.todr_setwen = NULL;
|
|
todr_attach(&sc->sc_todr);
|
|
}
|
|
|
|
static int
|
|
eprtc_gettime(struct todr_chip_handle *ch, struct timeval *tv)
|
|
{
|
|
struct eprtc_softc *sc = ch->cookie;
|
|
|
|
tv->tv_sec = bus_space_read_4(sc->sc_iot, sc->sc_ioh, EP93XX_RTC_Data);
|
|
tv->tv_usec = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
eprtc_settime(struct todr_chip_handle *ch, struct timeval *tv)
|
|
{
|
|
struct eprtc_softc *sc = ch->cookie;
|
|
|
|
bus_space_write_4(sc->sc_iot, sc->sc_ioh, EP93XX_RTC_Load, tv->tv_sec);
|
|
return 0;
|
|
}
|