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spic_acpi.c revision 1.6 
      1 /*	$NetBSD: spic_acpi.c,v 1.6 2010/03/05 14:00:17 jruoho 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 (at) 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 1.6 2010/03/05 14:00:17 jruoho Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/device.h>
     37 #include <sys/systm.h>
     38 
     39 #include <dev/acpi/acpireg.h>
     40 #include <dev/acpi/acpivar.h>
     41 
     42 #include <dev/ic/spicvar.h>
     43 
     44 #define _COMPONENT		ACPI_RESOURCE_COMPONENT
     45 ACPI_MODULE_NAME		("spic_acpi")
     46 
     47 struct spic_acpi_softc {
     48 	struct spic_softc sc_spic;	/* spic device */
     49 
     50 	struct acpi_devnode *sc_node;	/* our ACPI devnode */
     51 
     52 	void *sc_ih;
     53 };
     54 
     55 static const char * const spic_acpi_ids[] = {
     56 	"SNY6001",
     57 	NULL
     58 };
     59 
     60 static int	spic_acpi_match(device_t, cfdata_t, void *);
     61 static void	spic_acpi_attach(device_t, device_t, void *);
     62 
     63 CFATTACH_DECL_NEW(spic_acpi, sizeof(struct spic_acpi_softc),
     64     spic_acpi_match, spic_acpi_attach, NULL, NULL);
     65 
     66 
     67 static int
     68 spic_acpi_match(device_t parent, cfdata_t match, void *aux)
     69 {
     70 	struct acpi_attach_args *aa = aux;
     71 
     72 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     73 		return (0);
     74 
     75 	return (acpi_match_hid(aa->aa_node->ad_devinfo, spic_acpi_ids));
     76 }
     77 
     78 static void
     79 spic_acpi_attach(device_t parent, device_t self, void *aux)
     80 {
     81 	struct spic_acpi_softc *sc = device_private(self);
     82 	struct acpi_attach_args *aa = aux;
     83 	struct acpi_io *io;
     84 	struct acpi_irq *irq;
     85 	struct acpi_resources res;
     86 
     87 	ACPI_STATUS rv;
     88 
     89 	sc->sc_spic.sc_dev = self;
     90 	sc->sc_node = aa->aa_node;
     91 
     92 	/* Parse our resources. */
     93 	rv = acpi_resource_parse(self, sc->sc_node->ad_handle,
     94 	    "_CRS", &res, &acpi_resource_parse_ops_default);
     95 	if (ACPI_FAILURE(rv))
     96 		return;
     97 
     98 	sc->sc_spic.sc_iot = aa->aa_iot;
     99 	io = acpi_res_io(&res, 0);
    100 	if (io == NULL) {
    101 		aprint_error_dev(self, "unable to find io resource\n");
    102 		goto out;
    103 	}
    104 	if (bus_space_map(sc->sc_spic.sc_iot, io->ar_base, io->ar_length,
    105 	    0, &sc->sc_spic.sc_ioh) != 0) {
    106 		aprint_error_dev(self, "unable to map data register\n");
    107 		goto out;
    108 	}
    109 	irq = acpi_res_irq(&res, 0);
    110 	if (irq == NULL) {
    111 		aprint_error_dev(self, "unable to find irq resource\n");
    112 		/* XXX unmap */
    113 		goto out;
    114 	}
    115 #if 0
    116 	sc->sc_ih = isa_intr_establish(NULL, irq->ar_irq,
    117 	    IST_EDGE, IPL_TTY, spic_intr, sc);
    118 #endif
    119 
    120 	if (!pmf_device_register(self, spic_suspend, spic_resume))
    121 		aprint_error_dev(self, "couldn't establish power handler\n");
    122 	else
    123 		pmf_class_input_register(self);
    124 
    125 	spic_attach(&sc->sc_spic);
    126  out:
    127 	acpi_resource_cleanup(&res);
    128 }
    129