/*      $NetBSD: deq.c,v 1.21 2023/12/20 15:29:04 thorpej Exp $ */

/*-
* Copyright (C) 2005 Michael Lorenz
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/*
* a dummy device to attach to OF's deq node marking the TAS3004 audio mixer /
* equalizer chip, needed by snapper
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: deq.c,v 1.21 2023/12/20 15:29:04 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/device.h>

#include <dev/ofw/openfirm.h>
#include <dev/i2c/i2cvar.h>

#include <machine/autoconf.h>
#include <macppc/dev/deqvar.h>

static void deq_attach(device_t, device_t, void *);
static int deq_match(device_t, struct cfdata *, void *);

CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc),
   deq_match, deq_attach, NULL, NULL);

static const struct device_compatible_entry compat_data[] = {
       { .compat = "deq" },
       { .compat = "tas3004" },
       { .compat = "pcm3052" },
       { .compat = "cs8416" },
       { .compat = "codec" },
       DEVICE_COMPAT_EOL
};

int
deq_match(device_t parent, struct cfdata *cf, void *aux)
{
       struct i2c_attach_args *ia = aux;
       int match_result;

       if (iic_use_direct_match(ia, cf, compat_data, &match_result))
               return match_result;

       /* This driver is direct-config only. */

       return 0;
}

void
deq_attach(device_t parent, device_t self, void *aux)
{
       struct deq_softc *sc = device_private(self);
       struct i2c_attach_args *ia = aux;
       char name[256];

       sc->sc_dev = self;
       sc->sc_node = ia->ia_cookie;
       sc->sc_parent = parent;
       sc->sc_address = ia->ia_addr;
       sc->sc_i2c = ia->ia_tag;
       if (OF_getprop(sc->sc_node, "compatible", name, 256) <= 0) {
               /* deq has no 'compatible' on my iBook G4 or Quicksilver */
               switch (sc->sc_address) {
                       case 0x35:
                               strcpy(name, "tas3004");
                               break;
                       case 0x34:
                               strcpy(name, "tas3001");
                               break;
                       default:
                               strcpy(name, "unknown");
               }
       }
       aprint_normal(" Audio Codec (%s)\n", name);
}