/* $OpenBSD: daca.c,v 1.4 2007/04/23 16:27:20 deraadt Exp $ */ /* $Id: daca.c,v 1.1.1.1 2008/03/04 16:07:25 nbrk Exp $ */ /*- * Copyright (c) 2002,2003 Tsubai Masanari. All rights reserved. * * 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. */ /* * Datasheet is available from * http://www.indata.si/grega/pdfs/dac3550a.pdf */ #include #include #include #include #include #include #include #include #include #ifdef DACA_DEBUG # define DPRINTF printf #else # define DPRINTF while (0) printf #endif /* XXX */ #define daca_softc i2s_softc /* XXX */ int kiic_write(struct device *, int, int, const void *, int); int kiic_writereg(struct device *, int, u_int); int daca_getdev(void *, struct audio_device *); int daca_match(struct device *, void *, void *); void daca_attach(struct device *, struct device *, void *); void daca_defer(struct device *); void daca_init(struct daca_softc *); void daca_set_volume(struct daca_softc *, int, int); struct cfattach daca_ca = { sizeof(struct daca_softc), daca_match, daca_attach }; struct cfdriver daca_cd = { NULL, "daca", DV_DULL }; struct audio_hw_if daca_hw_if = { i2s_open, i2s_close, NULL, i2s_query_encoding, i2s_set_params, i2s_round_blocksize, NULL, NULL, NULL, NULL, NULL, i2s_halt_output, i2s_halt_input, NULL, daca_getdev, NULL, i2s_set_port, i2s_get_port, i2s_query_devinfo, i2s_allocm, /* allocm */ NULL, i2s_round_buffersize, i2s_mappage, i2s_get_props, i2s_trigger_output, i2s_trigger_input, }; struct audio_device daca_device = { "DACA", "", "daca" }; /* DAC3550A registers */ #define DEQ_SR 0x01 /* Sample rate control (8) */ #define DEQ_AVOL 0x02 /* Analog volume (16) */ #define DEQ_GCFG 0x03 /* Global configuration (8) */ int daca_match(struct device *parent, void *match, void *aux) { struct confargs *ca = aux; int soundbus, soundchip; char compat[32]; if (strcmp(ca->ca_name, "i2s") != 0) return (0); if ((soundbus = OF_child(ca->ca_node)) == 0 || (soundchip = OF_child(soundbus)) == 0) return (0); bzero(compat, sizeof compat); OF_getprop(soundchip, "compatible", compat, sizeof compat); if (strcmp(compat, "daca") != 0) return (0); return (1); } #define DEQaddr 0x9a void daca_attach(struct device *parent,struct device *self, void *aux) { struct daca_softc *sc = (struct daca_softc *)self; sc->sc_setvolume = daca_set_volume; i2s_attach(parent, sc, aux); config_defer(self, daca_defer); } void daca_defer(struct device *dev) { struct daca_softc *sc = (struct daca_softc *)dev; struct device *dv; TAILQ_FOREACH(dv, &alldevs, dv_list) if (strncmp(dv->dv_xname, "kiic", 4) == 0 && strncmp(dv->dv_parent->dv_xname, "macobio", 7) == 0) sc->sc_i2c = dv; if (sc->sc_i2c == NULL) { printf("%s: unable to find i2c\n", sc->sc_dev.dv_xname); return; } /* XXX If i2c has failed to attach, what should we do? */ audio_attach_mi(&daca_hw_if, sc, &sc->sc_dev); daca_init(sc); } void daca_init(struct daca_softc *sc) { i2s_set_rate(sc, 44100); kiic_writereg(sc->sc_i2c, 4, 0x01 | 0x02 | 0x04); } int daca_getdev(void *h, struct audio_device *retp) { *retp = daca_device; return (0); } void daca_set_volume(struct daca_softc *sc, int left, int right) { u_int16_t data; sc->sc_vol_l = left; sc->sc_vol_r = right; left >>= 2; right >>= 2; data = left << 8 | right; kiic_write(sc->sc_i2c, DEQaddr, DEQ_AVOL, &data, 2); }