sys/arch/sh3/dev/shb.c

   1 /*      $NetBSD: shb.c,v 1.13 2008/04/28 20:23:35 martin Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   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. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30 __KERNEL_RCSID(0, "$NetBSD: shb.c,v 1.13 2008/04/28 20:23:35 martin Exp $");
  31
  32 #include <sys/param.h>
  33 #include <sys/systm.h>
  34 #include <sys/device.h>
  35
  36 #include <machine/autoconf.h>
  37
  38 extern struct cfdriver shb_cd;
  39
  40 static int shb_match(device_t, cfdata_t, void *);
  41 static void shb_attach(device_t, device_t, void *);
  42 static int shb_print(void *, const char *);
  43 static int shb_search(device_t, cfdata_t, const int *, void *);
  44
  45 CFATTACH_DECL_NEW(shb, 0,
  46     shb_match, shb_attach, NULL, NULL);
  47
  48
  49 static int
  50 shb_match(device_t parent, cfdata_t cf, void *aux)
  51 {
  52         struct mainbus_attach_args *ma = aux;
  53
  54         if (strcmp(ma->ma_name, shb_cd.cd_name) != 0)
  55                 return (0);
  56
  57         return (1);
  58 }
  59
  60 static void
  61 shb_attach(device_t parent, device_t self, void *aux)
  62 {
  63
  64         aprint_naive("\n");
  65         aprint_normal("\n");
  66
  67         config_search_ia(shb_search, self, "shb", NULL);
  68
  69         /*
  70          * XXX: TODO: provide hooks to manage on-chip modules.  For
  71          * now register null hooks which is no worse than before.
  72          */
  73         if (!pmf_device_register(self, NULL, NULL))
  74                 aprint_error_dev(self, "unable to establish power handler\n");
  75 }
  76
  77 static int
  78 shb_search(device_t parent, cfdata_t cf, const int *ldesc, void *aux)
  79 {
  80
  81         if (config_match(parent, cf, NULL) > 0)
  82                 config_attach(parent, cf, NULL, shb_print);
  83
  84         return (0);
  85 }
  86
  87 static int
  88 shb_print(void *aux, const char *pnp)
  89 {
  90
  91         return (pnp ? QUIET : UNCONF);
  92 }