sys/dev/acpi/spic_acpi.c

   1 /*      $NetBSD: spic_acpi.c,v 1.21 2009/02/21 00:30:37 jmcneill Exp $  */
   2
   3 /*
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Lennart Augustsson (lennart@augustsson.net).
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: spic_acpi.c,v 1.21 2009/02/21 00:30:37 jmcneill Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38 #include <sys/proc.h>
  39 #include <sys/kernel.h>
  40 #include <sys/callout.h>
  41 #include <sys/bus.h>
  42
  43 #include <dev/ic/spicvar.h>
  44
  45 #include <dev/acpi/acpica.h>
  46 #include <dev/acpi/acpivar.h>
  47
  48 struct spic_acpi_softc {
  49         struct spic_softc sc_spic;      /* spic device */
  50
  51         struct acpi_devnode *sc_node;   /* our ACPI devnode */
  52
  53         void *sc_ih;
  54 };
  55
  56 static const char * const spic_acpi_ids[] = {
  57         "SNY6001",
  58         NULL
  59 };
  60
  61 static int      spic_acpi_match(device_t, cfdata_t, void *);
  62 static void     spic_acpi_attach(device_t, device_t, void *);
  63
  64 CFATTACH_DECL_NEW(spic_acpi, sizeof(struct spic_acpi_softc),
  65     spic_acpi_match, spic_acpi_attach, NULL, NULL);
  66
  67
  68 static int
  69 spic_acpi_match(device_t parent, cfdata_t match, void *aux)
  70 {
  71         struct acpi_attach_args *aa = aux;
  72
  73         if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
  74                 return (0);
  75
  76         return (acpi_match_hid(aa->aa_node->ad_devinfo, spic_acpi_ids));
  77 }
  78
  79 static void
  80 spic_acpi_attach(device_t parent, device_t self, void *aux)
  81 {
  82         struct spic_acpi_softc *sc = device_private(self);
  83         struct acpi_attach_args *aa = aux;
  84         struct acpi_io *io;
  85         struct acpi_irq *irq;
  86         struct acpi_resources res;
  87
  88         ACPI_STATUS rv;
  89
  90         sc->sc_spic.sc_dev = self;
  91         sc->sc_node = aa->aa_node;
  92
  93         /* Parse our resources. */
  94         rv = acpi_resource_parse(self, sc->sc_node->ad_handle,
  95             "_CRS", &res, &acpi_resource_parse_ops_default);
  96         if (ACPI_FAILURE(rv))
  97                 return;
  98
  99         sc->sc_spic.sc_iot = aa->aa_iot;
 100         io = acpi_res_io(&res, 0);
 101         if (io == NULL) {
 102                 aprint_error_dev(self, "unable to find io resource\n");
 103                 goto out;
 104         }
 105         if (bus_space_map(sc->sc_spic.sc_iot, io->ar_base, io->ar_length,
 106             0, &sc->sc_spic.sc_ioh) != 0) {
 107                 aprint_error_dev(self, "unable to map data register\n");
 108                 goto out;
 109         }
 110         irq = acpi_res_irq(&res, 0);
 111         if (irq == NULL) {
 112                 aprint_error_dev(self, "unable to find irq resource\n");
 113                 /* XXX unmap */
 114                 goto out;
 115         }
 116 #if 0
 117         sc->sc_ih = isa_intr_establish(NULL, irq->ar_irq,
 118             IST_EDGE, IPL_TTY, spic_intr, sc);
 119 #endif
 120
 121         if (!pmf_device_register(self, spic_suspend, spic_resume))
 122                 aprint_error_dev(self, "couldn't establish power handler\n");
 123         else
 124                 pmf_class_input_register(self);
 125
 126         spic_attach(&sc->sc_spic);
 127  out:
 128         acpi_resource_cleanup(&res);
 129 }