1 /* $OpenBSD: daca.c,v 1.8 2010/02/26 21:53:43 jasper Exp $ */ 2 3 /*- 4 * Copyright (c) 2002,2003 Tsubai Masanari. All rights reserved. 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 * Datasheet is available from 31 * http://www.indata.si/grega/pdfs/dac3550a.pdf 32 */ 33 34 #include <sys/param.h> 35 #include <sys/audioio.h> 36 #include <sys/device.h> 37 #include <sys/systm.h> 38 39 #include <dev/audio_if.h> 40 #include <dev/ofw/openfirm.h> 41 #include <macppc/dev/dbdma.h> 42 43 #include <machine/autoconf.h> 44 45 #include <macppc/dev/i2svar.h> 46 47 #ifdef DACA_DEBUG 48 # define DPRINTF printf 49 #else 50 # define DPRINTF while (0) printf 51 #endif 52 53 /* XXX */ 54 #define daca_softc i2s_softc 55 56 /* XXX */ 57 int kiic_write(struct device *, int, int, const void *, int); 58 int kiic_writereg(struct device *, int, u_int); 59 60 int daca_getdev(void *, struct audio_device *); 61 int daca_match(struct device *, void *, void *); 62 void daca_attach(struct device *, struct device *, void *); 63 void daca_defer(struct device *); 64 void daca_init(struct daca_softc *); 65 void daca_set_volume(struct daca_softc *, int, int); 66 void daca_get_default_params(void *, int, struct audio_params *); 67 68 struct cfattach daca_ca = { 69 sizeof(struct daca_softc), daca_match, daca_attach 70 }; 71 72 struct cfdriver daca_cd = { 73 NULL, "daca", DV_DULL 74 }; 75 76 struct audio_hw_if daca_hw_if = { 77 i2s_open, 78 i2s_close, 79 NULL, 80 i2s_query_encoding, 81 i2s_set_params, 82 i2s_round_blocksize, 83 NULL, 84 NULL, 85 NULL, 86 NULL, 87 NULL, 88 i2s_halt_output, 89 i2s_halt_input, 90 NULL, 91 daca_getdev, 92 NULL, 93 i2s_set_port, 94 i2s_get_port, 95 i2s_query_devinfo, 96 i2s_allocm, /* allocm */ 97 NULL, 98 i2s_round_buffersize, 99 i2s_mappage, 100 i2s_get_props, 101 i2s_trigger_output, 102 i2s_trigger_input, 103 daca_get_default_params 104 }; 105 106 struct audio_device daca_device = { 107 "DACA", 108 "", 109 "daca" 110 }; 111 112 /* DAC3550A registers */ 113 #define DEQ_SR 0x01 /* Sample rate control (8) */ 114 #define DEQ_AVOL 0x02 /* Analog volume (16) */ 115 #define DEQ_GCFG 0x03 /* Global configuration (8) */ 116 117 int 118 daca_match(struct device *parent, void *match, void *aux) 119 { 120 struct confargs *ca = aux; 121 int soundbus, soundchip; 122 char compat[32]; 123 124 if (strcmp(ca->ca_name, "i2s") != 0) 125 return (0); 126 127 if ((soundbus = OF_child(ca->ca_node)) == 0 || 128 (soundchip = OF_child(soundbus)) == 0) 129 return (0); 130 131 bzero(compat, sizeof compat); 132 OF_getprop(soundchip, "compatible", compat, sizeof compat); 133 134 if (strcmp(compat, "daca") != 0) 135 return (0); 136 137 return (1); 138 } 139 140 #define DEQaddr 0x9a 141 142 void 143 daca_attach(struct device *parent,struct device *self, void *aux) 144 { 145 struct daca_softc *sc = (struct daca_softc *)self; 146 147 sc->sc_setvolume = daca_set_volume; 148 149 i2s_attach(parent, sc, aux); 150 config_defer(self, daca_defer); 151 } 152 153 void 154 daca_defer(struct device *dev) 155 { 156 struct daca_softc *sc = (struct daca_softc *)dev; 157 struct device *dv; 158 159 TAILQ_FOREACH(dv, &alldevs, dv_list) 160 if (strcmp(dv->dv_cfdata->cf_driver->cd_name, "kiic") == 0 && 161 strcmp(dv->dv_parent->dv_cfdata->cf_driver->cd_name, "macobio") == 0) 162 sc->sc_i2c = dv; 163 if (sc->sc_i2c == NULL) { 164 printf("%s: unable to find i2c\n", sc->sc_dev.dv_xname); 165 return; 166 } 167 168 /* XXX If i2c has failed to attach, what should we do? */ 169 170 audio_attach_mi(&daca_hw_if, sc, &sc->sc_dev); 171 172 daca_init(sc); 173 } 174 175 void 176 daca_init(struct daca_softc *sc) 177 { 178 i2s_set_rate(sc, 44100); 179 kiic_writereg(sc->sc_i2c, 4, 0x01 | 0x02 | 0x04); 180 } 181 182 int 183 daca_getdev(void *h, struct audio_device *retp) 184 { 185 *retp = daca_device; 186 return (0); 187 } 188 189 void 190 daca_set_volume(struct daca_softc *sc, int left, int right) 191 { 192 u_int16_t data; 193 194 sc->sc_vol_l = left; 195 sc->sc_vol_r = right; 196 197 left >>= 2; 198 right >>= 2; 199 data = left << 8 | right; 200 kiic_write(sc->sc_i2c, DEQaddr, DEQ_AVOL, &data, 2); 201 } 202 203 void 204 daca_get_default_params(void *addr, int mode, struct audio_params *params) 205 { 206 i2s_get_default_params(params); 207 } 208