/* $NetBSD: ug_acpi.c,v 1.7 2021/01/29 15:49:55 thorpej Exp $ */

/*
* Copyright (c) 2007 Mihai Chelaru <[email protected]>
* 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.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: ug_acpi.c,v 1.7 2021/01/29 15:49:55 thorpej Exp $");

#include <sys/param.h>
#include <sys/device.h>
#include <sys/systm.h>

#include <dev/acpi/acpivar.h>

#include <dev/ic/ugreg.h>
#include <dev/ic/ugvar.h>

/* autoconf(9) functions */
static int      ug_acpi_match(device_t, cfdata_t, void *);
static void     ug_acpi_attach(device_t, device_t, void *);

CFATTACH_DECL_NEW(ug_acpi, sizeof(struct ug_softc), ug_acpi_match,
   ug_acpi_attach, NULL, NULL);

/*
* Supported devices
* XXX: only uGuru 2005 for now
*/

static const struct device_compatible_entry compat_data[] = {
       { .compat = "ABT2005" },        /* uGuru 2005 */
       DEVICE_COMPAT_EOL
};

static int
ug_acpi_match(device_t parent, cfdata_t match, void *aux)
{
       struct acpi_attach_args *aa = aux;

       return acpi_compatible_match(aa, compat_data);
}

static void
ug_acpi_attach(device_t parent, device_t self, void *aux)
{
       struct ug_softc *sc = device_private(self);
       struct acpi_attach_args *aa = aux;
       struct acpi_resources res;
       struct acpi_io *io;
       bus_space_handle_t ioh;
       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");
               acpi_resource_cleanup(&res);
               return;
       }

       if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length,
           0, &ioh)) {
               aprint_error_dev(self, "can't map i/o space\n");
               acpi_resource_cleanup(&res);
               return;
       }

       aprint_normal("%s", device_xname(self));

       sc->version = 2;        /* uGuru 2005 */
       sc->sc_ioh = ioh;
       sc->sc_iot = aa->aa_iot;
       ug2_attach(self);

       acpi_resource_cleanup(&res);
}