sys/arch/macppc/dev/deq.c

   1 /*      $NetBSD: deq.c,v 1.5 2009/03/14 15:36:09 dsl Exp $      */
   2
   3 /*-
   4  * Copyright (C) 2005 Michael Lorenz
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /*
  30  * a dummy device to attach to OF's deq node marking the TAS3004 audio mixer /
  31  * equalizer chip, needed by snapper
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __KERNEL_RCSID(0, "$NetBSD: deq.c,v 1.5 2009/03/14 15:36:09 dsl Exp $");
  36
  37 #include <sys/param.h>
  38 #include <sys/systm.h>
  39 #include <sys/kernel.h>
  40 #include <sys/device.h>
  41 #include <sys/malloc.h>
  42
  43 #include <uvm/uvm_extern.h>
  44
  45 #include <dev/ofw/openfirm.h>
  46 #include <dev/i2c/i2cvar.h>
  47
  48 #include <machine/autoconf.h>
  49 #include <macppc/dev/ki2cvar.h>
  50 #include <macppc/dev/deqvar.h>
  51
  52 static void deq_attach(device_t, device_t, void *);
  53 static int deq_match(device_t, struct cfdata *, void *);
  54
  55 CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc),
  56     deq_match, deq_attach, NULL, NULL);
  57
  58 int
  59 deq_match(device_t parent, struct cfdata *cf, void *aux)
  60 {
  61         struct ki2c_confargs *ka = aux;
  62         char compat[32];
  63
  64         if (strcmp(ka->ka_name, "deq") != 0)
  65                 return 0;
  66
  67         memset(compat, 0, sizeof(compat));
  68         if(OF_getprop(ka->ka_node, "i2c-address", compat, sizeof(compat)))
  69                 return 1;
  70         return 0;
  71 }
  72
  73 void
  74 deq_attach(device_t parent, device_t self, void *aux)
  75 {
  76         struct deq_softc *sc = device_private(self);
  77         struct ki2c_confargs *ka = aux;
  78         int node;
  79
  80         sc->sc_dev = self;
  81         node = ka->ka_node;
  82         sc->sc_node = node;
  83         sc->sc_parent = parent;
  84         sc->sc_address = ka->ka_addr & 0xfe;
  85         sc->sc_i2c = ka->ka_tag;
  86         printf(" Apple Digital Equalizer, addr 0x%x\n", sc->sc_address);
  87 }