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spic_acpi.c revision 1.5 
      1 /*	$NetBSD: spic_acpi.c,v 1.5 2010/01/30 18:35:49 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 1.5 2010/01/30 18:35:49 jruoho 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/acpireg.h>
     47 #include <dev/acpi/acpivar.h>
     48 
     49 #define _COMPONENT		ACPI_RESOURCE_COMPONENT
     50 ACPI_MODULE_NAME		("spic_acpi")
     51 
     52 struct spic_acpi_softc {
     53 	struct spic_softc sc_spic;	/* spic device */
     54 
     55 	struct acpi_devnode *sc_node;	/* our ACPI devnode */
     56 
     57 	void *sc_ih;
     58 };
     59 
     60 static const char * const spic_acpi_ids[] = {
     61 	"SNY6001",
     62 	NULL
     63 };
     64 
     65 static int	spic_acpi_match(device_t, cfdata_t, void *);
     66 static void	spic_acpi_attach(device_t, device_t, void *);
     67 
     68 CFATTACH_DECL_NEW(spic_acpi, sizeof(struct spic_acpi_softc),
     69     spic_acpi_match, spic_acpi_attach, NULL, NULL);
     70 
     71 
     72 static int
     73 spic_acpi_match(device_t parent, cfdata_t match, void *aux)
     74 {
     75 	struct acpi_attach_args *aa = aux;
     76 
     77 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     78 		return (0);
     79 
     80 	return (acpi_match_hid(aa->aa_node->ad_devinfo, spic_acpi_ids));
     81 }
     82 
     83 static void
     84 spic_acpi_attach(device_t parent, device_t self, void *aux)
     85 {
     86 	struct spic_acpi_softc *sc = device_private(self);
     87 	struct acpi_attach_args *aa = aux;
     88 	struct acpi_io *io;
     89 	struct acpi_irq *irq;
     90 	struct acpi_resources res;
     91 
     92 	ACPI_STATUS rv;
     93 
     94 	sc->sc_spic.sc_dev = self;
     95 	sc->sc_node = aa->aa_node;
     96 
     97 	/* Parse our resources. */
     98 	rv = acpi_resource_parse(self, sc->sc_node->ad_handle,
     99 	    "_CRS", &res, &acpi_resource_parse_ops_default);
    100 	if (ACPI_FAILURE(rv))
    101 		return;
    102 
    103 	sc->sc_spic.sc_iot = aa->aa_iot;
    104 	io = acpi_res_io(&res, 0);
    105 	if (io == NULL) {
    106 		aprint_error_dev(self, "unable to find io resource\n");
    107 		goto out;
    108 	}
    109 	if (bus_space_map(sc->sc_spic.sc_iot, io->ar_base, io->ar_length,
    110 	    0, &sc->sc_spic.sc_ioh) != 0) {
    111 		aprint_error_dev(self, "unable to map data register\n");
    112 		goto out;
    113 	}
    114 	irq = acpi_res_irq(&res, 0);
    115 	if (irq == NULL) {
    116 		aprint_error_dev(self, "unable to find irq resource\n");
    117 		/* XXX unmap */
    118 		goto out;
    119 	}
    120 #if 0
    121 	sc->sc_ih = isa_intr_establish(NULL, irq->ar_irq,
    122 	    IST_EDGE, IPL_TTY, spic_intr, sc);
    123 #endif
    124 
    125 	if (!pmf_device_register(self, spic_suspend, spic_resume))
    126 		aprint_error_dev(self, "couldn't establish power handler\n");
    127 	else
    128 		pmf_class_input_register(self);
    129 
    130 	spic_attach(&sc->sc_spic);
    131  out:
    132 	acpi_resource_cleanup(&res);
    133 }
    134