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joy_acpi.c revision 1.11 
      1 /* $NetBSD: joy_acpi.c,v 1.11 2011/11/23 23:07:31 jmcneill Exp $ */
      2 
      3 /*
      4  * Copyright (c) 2002 Jared D. McNeill <jmcneill (at) invisible.ca>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. The name of the author may not be used to endorse or promote products
     13  *    derived from this software without specific prior written permission.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
     20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * ACPI joy(4) attachment based in lpt_acpi.c by Jared D. McNeill.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: joy_acpi.c,v 1.11 2011/11/23 23:07:31 jmcneill Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/device.h>
     37 #include <sys/systm.h>
     38 
     39 #include <dev/acpi/acpivar.h>
     40 
     41 #include <dev/ic/joyvar.h>
     42 
     43 static int	joy_acpi_match(device_t, cfdata_t, void *);
     44 static void	joy_acpi_attach(device_t, device_t, void *);
     45 
     46 struct joy_acpi_softc {
     47 	struct joy_softc sc_joy;
     48 	kmutex_t sc_lock;
     49 };
     50 
     51 CFATTACH_DECL_NEW(joy_acpi, sizeof(struct joy_acpi_softc), joy_acpi_match,
     52     joy_acpi_attach, NULL, NULL);
     53 
     54 /*
     55  * Supported device IDs
     56  */
     57 
     58 static const char * const joy_acpi_ids[] = {
     59 	"PNPB02F",	/* Joystick/Game port */
     60 	NULL
     61 };
     62 
     63 /*
     64  * joy_acpi_match: autoconf(9) match routine
     65  */
     66 static int
     67 joy_acpi_match(device_t parent, cfdata_t match, void *aux)
     68 {
     69 	struct acpi_attach_args *aa = aux;
     70 
     71 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
     72 		return 0;
     73 
     74 	return acpi_match_hid(aa->aa_node->ad_devinfo, joy_acpi_ids);
     75 }
     76 
     77 /*
     78  * joy_acpi_attach: autoconf(9) attach routine
     79  */
     80 static void
     81 joy_acpi_attach(device_t parent, device_t self, void *aux)
     82 {
     83 	struct joy_acpi_softc *asc = device_private(self);
     84 	struct joy_softc *sc = &asc->sc_joy;
     85 	struct acpi_attach_args *aa = aux;
     86 	struct acpi_resources res;
     87 	struct acpi_io *io;
     88 	ACPI_STATUS rv;
     89 
     90 	sc->sc_dev = self;
     91 
     92 	/* parse resources */
     93 	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
     94 	    &res, &acpi_resource_parse_ops_default);
     95 	if (ACPI_FAILURE(rv))
     96 		return;
     97 
     98 	/* find our i/o registers */
     99 	io = acpi_res_io(&res, 0);
    100 	if (io == NULL) {
    101 		aprint_error_dev(self,
    102 		    "unable to find i/o register resource\n");
    103 		goto out;
    104 	}
    105 
    106 	sc->sc_iot = aa->aa_iot;
    107 	if (bus_space_map(sc->sc_iot, io->ar_base, io->ar_length,
    108 		    0, &sc->sc_ioh)) {
    109 		aprint_error_dev(self, "can't map i/o space\n");
    110 		goto out;
    111 	}
    112 
    113 	mutex_init(&asc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    114 	sc->sc_lock = &asc->sc_lock;
    115 
    116 	joyattach(sc);
    117 
    118  out:
    119 	acpi_resource_cleanup(&res);
    120 }
    121