deq.c revision 1.21
1/* $NetBSD: deq.c,v 1.21 2023/12/20 15:29:04 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 1.21 2023/12/20 15:29:04 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 48static void deq_attach(device_t, device_t, void *); 49static int deq_match(device_t, struct cfdata *, void *); 50 51CFATTACH_DECL_NEW(deq, sizeof(struct deq_softc), 52 deq_match, deq_attach, NULL, NULL); 53 54static 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 63int 64deq_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 77void 78deq_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 = ia->ia_cookie; 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