sys/arch/arm/footbridge/isa/sysbeep_isa.c

   1 /*      $NetBSD: sysbeep_isa.c,v 1.9 2009/03/14 21:04:05 dsl Exp $      */
   2
   3 /*-
   4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Mark Brinicombe of Causality Limited.
   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: sysbeep_isa.c,v 1.9 2009/03/14 21:04:05 dsl Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/device.h>
  38 #include <dev/isa/isavar.h>
  39
  40 #include <dev/isa/pcppivar.h>
  41
  42 /* Prototypes */
  43 int sysbeep_isa_match(device_t parent, cfdata_t cf, void *aux);
  44 void sysbeep_isa_attach(device_t parent, device_t self, void *aux);
  45 void sysbeep_isa(int pitch, int period);
  46
  47 /* device attach structure */
  48 CFATTACH_DECL_NEW(sysbeep_isa, sizeof(struct device),
  49     sysbeep_isa_match, sysbeep_isa_attach, NULL, NULL);
  50
  51 static int ppi_attached;
  52 static pcppi_tag_t ppicookie;
  53
  54 int
  55 sysbeep_isa_match(device_t parent, cfdata_t match, void *aux)
  56 {
  57         return (!ppi_attached);
  58 }
  59
  60 void
  61 sysbeep_isa_attach(device_t parent, device_t self, void *aux)
  62 {
  63         aprint_normal("\n");
  64
  65         ppicookie = ((struct pcppi_attach_args *)aux)->pa_cookie;
  66         ppi_attached = 1;
  67 }
  68
  69 void
  70 sysbeep(int pitch, int period)
  71 {
  72         if (ppi_attached)
  73                 pcppi_bell(ppicookie, pitch, period, 0);
  74 }