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/* $OpenBSD: daca.c,v 1.3 2005/11/20 19:54:05 brad Exp $ */
/* $Id: daca.c,v 1.3 2005/11/20 19:54:05 brad 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 <sys/param.h>
#include <sys/audioio.h>
#include <sys/device.h>
#include <sys/systm.h>
#include <dev/audio_if.h>
#include <dev/ofw/openfirm.h>
#include <macppc/dev/dbdma.h>
#include <machine/autoconf.h>
#include <macppc/dev/i2svar.h>
#ifdef DACA_DEBUG
# define DPRINTF printf
#else
# define DPRINTF while (0) printf
#endif
/* XXX */
#define daca_softc i2s_softc
/* XXX */
int ki2c_write(struct device *, int, int, const void *, int);
int ki2c_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, "ki2c", 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);
ki2c_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;
ki2c_write(sc->sc_i2c, DEQaddr, DEQ_AVOL, &data, 2);
}
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