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      1 /*	$NetBSD: deq.c,v 1.22 2025/09/17 14:15:58 thorpej 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 1.22 2025/09/17 14:15:58 thorpej Exp $");
     36 
     37 #include <sys/param.h>
     38 #include <sys/systm.h>
     39 #include <sys/kernel.h>
     40 #include <sys/device.h>
     41 
     42 #include <dev/ofw/openfirm.h>
     43 #include <dev/i2c/i2cvar.h>
     44 
     45 #include <machine/autoconf.h>
     46 #include <macppc/dev/deqvar.h>
     47 
     48 static void deq_attach(device_t, device_t, void *);
     49 static int deq_match(device_t, struct cfdata *, void *);
     50 
     51 CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc),
     52     deq_match, deq_attach, NULL, NULL);
     53 
     54 static const struct device_compatible_entry compat_data[] = {
     55 	{ .compat = "deq" },
     56 	{ .compat = "tas3004" },
     57 	{ .compat = "pcm3052" },
     58 	{ .compat = "cs8416" },
     59 	{ .compat = "codec" },
     60 	DEVICE_COMPAT_EOL
     61 };
     62 
     63 int
     64 deq_match(device_t parent, struct cfdata *cf, void *aux)
     65 {
     66 	struct i2c_attach_args *ia = aux;
     67 	int match_result;
     68 
     69 	if (iic_use_direct_match(ia, cf, compat_data, &match_result))
     70 		return match_result;
     71 
     72 	/* This driver is direct-config only. */
     73 
     74 	return 0;
     75 }
     76 
     77 void
     78 deq_attach(device_t parent, device_t self, void *aux)
     79 {
     80 	struct deq_softc *sc = device_private(self);
     81 	struct i2c_attach_args *ia = aux;
     82 	char name[256];
     83 
     84 	sc->sc_dev = self;
     85 	sc->sc_node = devhandle_to_of(device_handle(self));
     86 	sc->sc_parent = parent;
     87 	sc->sc_address = ia->ia_addr;
     88 	sc->sc_i2c = ia->ia_tag;
     89 	if (OF_getprop(sc->sc_node, "compatible", name, 256) <= 0) {
     90 		/* deq has no 'compatible' on my iBook G4 or Quicksilver */
     91 		switch (sc->sc_address) {
     92 			case 0x35:
     93 				strcpy(name, "tas3004");
     94 				break;
     95 			case 0x34:
     96 				strcpy(name, "tas3001");
     97 				break;
     98 			default:
     99 				strcpy(name, "unknown");
    100 		}
    101 	}
    102 	aprint_normal(" Audio Codec (%s)\n", name);
    103 }
    104