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/* $NetBSD: mpu_acpi.c,v 1.10 2010/03/05 14:00:17 jruoho Exp $ */
/*
* Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
*/
/*
* ACPI mpu(4) attachment based in lpt_acpi.c by Jared D. McNeill.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: mpu_acpi.c,v 1.10 2010/03/05 14:00:17 jruoho Exp $");
#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/acpi/acpivar.h>
#include <dev/ic/mpuvar.h>
#include <dev/isa/isadmavar.h>
static int mpu_acpi_match(device_t, cfdata_t, void *);
static void mpu_acpi_attach(device_t, device_t, void *);
struct mpu_acpi_softc {
struct mpu_softc sc_mpu;
};
CFATTACH_DECL_NEW(mpu_acpi, sizeof(struct mpu_acpi_softc), mpu_acpi_match,
mpu_acpi_attach, NULL, NULL);
/*
* Supported device IDs
*/
static const char * const mpu_acpi_ids[] = {
"PNPB006", /* Roland MPU-401 (compatible) MIDI UART */
NULL
};
/*
* mpu_acpi_match: autoconf(9) match routine
*/
static int
mpu_acpi_match(device_t parent, cfdata_t match, void *aux)
{
struct acpi_attach_args *aa = aux;
if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
return 0;
return acpi_match_hid(aa->aa_node->ad_devinfo, mpu_acpi_ids);
}
/*
* mpu_acpi_attach: autoconf(9) attach routine
*/
static void
mpu_acpi_attach(device_t parent, device_t self, void *aux)
{
struct mpu_acpi_softc *asc = device_private(self);
struct mpu_softc *sc = &asc->sc_mpu;
struct acpi_attach_args *aa = aux;
struct acpi_resources res;
struct acpi_io *io;
struct acpi_irq *irq;
ACPI_STATUS rv;
/* parse resources */
rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
&res, &acpi_resource_parse_ops_default);
if (ACPI_FAILURE(rv))
return;
/* find our i/o registers */
io = acpi_res_io(&res, 0);
if (io == NULL) {
aprint_error_dev(self,
"unable to find i/o register resource\n");
goto out;
}
/* find our IRQ */
irq = acpi_res_irq(&res, 0);
if (irq == NULL) {
aprint_error_dev(self, "unable to find irq resource\n");
goto out;
}
sc->iot = aa->aa_iot;
if (bus_space_map(sc->iot, io->ar_base, io->ar_length, 0, &sc->ioh)) {
aprint_error_dev(self, "can't map i/o space\n");
goto out;
}
sc->model = "Roland MPU-401 MIDI UART";
sc->sc_dev = self;
mpu_attach(sc);
sc->arg = isa_intr_establish(aa->aa_ic, irq->ar_irq,
(irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
IPL_AUDIO, mpu_intr, sc);
out:
acpi_resource_cleanup(&res);
}
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