Audio support for some newer macppc machines, any 'snapper' based systems.

Driver ported from netbsd with bus_dma addition/vtophys deletion.
This driver does not work on the first generation 'Digital audio' systems
those were 'tumbler' nor the latest version. ok dhartmei@

2 files changed, 1900 insertions, 0 deletions

diff --git a/sys/arch/macppc/dev/ki2c.c b/sys/arch/macppc/dev/ki2c.c
new file mode 100644
index 00000000000..df4ef8625d5
--- /dev/null
+++ b/sys/arch/macppc/dev/ki2c.c
@@ -0,0 +1,372 @@
+/*	$NetBSD: ki2c.c,v 1.1 2003/12/27 02:19:34 grant Exp $	*/
+/*	Id: ki2c.c,v 1.7 2002/10/05 09:56:05 tsubai Exp	*/
+
+/*-
+ * Copyright (c) 2001 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.
+ */
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+
+#include <dev/ofw/openfirm.h>
+#include <uvm/uvm_extern.h>
+#include <machine/autoconf.h>
+
+/* Keywest I2C Register offsets */
+#define MODE	0
+#define CONTROL	1
+#define STATUS	2
+#define ISR	3
+#define IER	4
+#define ADDR	5
+#define SUBADDR	6
+#define DATA	7
+
+/* MODE */
+#define I2C_SPEED	0x03	/* Speed mask */
+#define  I2C_100kHz	0x00
+#define  I2C_50kHz	0x01
+#define  I2C_25kHz	0x02
+#define I2C_MODE	0x0c	/* Mode mask */
+#define  I2C_DUMBMODE	0x00	/*  Dumb mode */
+#define  I2C_STDMODE	0x04	/*  Standard mode */
+#define  I2C_STDSUBMODE	0x08	/*  Standard mode + sub address */
+#define  I2C_COMBMODE	0x0c	/*  Combined mode */
+#define I2C_PORT	0xf0	/* Port mask */
+
+/* CONTROL */
+#define I2C_CT_AAK	0x01	/* Send AAK */
+#define I2C_CT_ADDR	0x02	/* Send address(es) */
+#define I2C_CT_STOP	0x04	/* Send STOP */
+#define I2C_CT_START	0x08	/* Send START */
+
+/* STATUS */
+#define I2C_ST_BUSY	0x01	/* Busy */
+#define I2C_ST_LASTAAK	0x02	/* Last AAK */
+#define I2C_ST_LASTRW	0x04	/* Last R/W */
+#define I2C_ST_SDA	0x08	/* SDA */
+#define I2C_ST_SCL	0x10	/* SCL */
+
+/* ISR/IER */
+#define I2C_INT_DATA	0x01	/* Data byte sent/received */
+#define I2C_INT_ADDR	0x02	/* Address sent */
+#define I2C_INT_STOP	0x04	/* STOP condition sent */
+#define I2C_INT_START	0x08	/* START condition sent */
+
+/* I2C flags */
+#define I2C_BUSY	0x01
+#define I2C_READING	0x02
+#define I2C_ERROR	0x04
+
+struct ki2c_softc {
+	struct device sc_dev;
+	paddr_t sc_paddr;
+	u_char *sc_reg;
+	int sc_regstep;
+
+	int sc_flags;
+	u_char *sc_data;
+	int sc_resid;
+};
+
+int ki2c_match(struct device *, void *, void *);
+void ki2c_attach(struct device *, struct device *, void *);
+inline u_int ki2c_readreg(struct ki2c_softc *, int);
+inline void ki2c_writereg(struct ki2c_softc *, int, u_int);
+u_int ki2c_getmode(struct ki2c_softc *);
+void ki2c_setmode(struct ki2c_softc *, u_int);
+u_int ki2c_getspeed(struct ki2c_softc *);
+void ki2c_setspeed(struct ki2c_softc *, u_int);
+int ki2c_intr(struct ki2c_softc *);
+int ki2c_poll(struct ki2c_softc *, int);
+int ki2c_start(struct ki2c_softc *, int, int, void *, int);
+int ki2c_read(struct ki2c_softc *, int, int, void *, int);
+int ki2c_write(struct ki2c_softc *, int, int, const void *, int);
+
+struct cfattach ki2c_ca = {
+	sizeof(struct ki2c_softc), ki2c_match, ki2c_attach
+};
+struct cfdriver ki2c_cd = {
+	NULL, "ki2c", DV_DULL
+};
+
+int
+ki2c_match(parent, match, aux)
+	struct device *parent;
+	void *match;
+	void *aux;
+{
+	struct confargs *ca = aux;
+
+	if (strcmp(ca->ca_name, "i2c") == 0)
+		return 1;
+
+	return 0;
+}
+
+void
+ki2c_attach(parent, self, aux)
+	struct device *parent;
+	struct device *self;
+	void *aux;
+{
+	struct ki2c_softc *sc = (struct ki2c_softc *)self;
+	struct confargs *ca = aux;
+	int node = ca->ca_node;
+	int rate;
+
+	ca->ca_reg[0] += ca->ca_baseaddr;
+
+	if (OF_getprop(node, "AAPL,i2c-rate", &rate, 4) != 4) {
+		printf(": cannot get i2c-rate\n");
+		return;
+	}
+	if (OF_getprop(node, "AAPL,address", &sc->sc_paddr, 4) != 4) {
+		printf(": unable to find i2c address\n");
+		return;
+	}
+	if (OF_getprop(node, "AAPL,address-step", &sc->sc_regstep, 4) != 4) {
+		printf(": unable to find i2c address step\n");
+		return;
+	}
+	sc->sc_reg = mapiodev(sc->sc_paddr, (DATA+1)*sc->sc_regstep);
+
+	printf("\n");
+
+	ki2c_writereg(sc, STATUS, 0);
+	ki2c_writereg(sc, ISR, 0);
+	ki2c_writereg(sc, IER, 0);
+
+	ki2c_setmode(sc, I2C_STDSUBMODE);
+	ki2c_setspeed(sc, I2C_100kHz);		/* XXX rate */
+}
+
+u_int
+ki2c_readreg(sc, reg)
+	struct ki2c_softc *sc;
+	int reg;
+{
+	u_char *addr = sc->sc_reg + sc->sc_regstep * reg;
+
+	return *addr;
+}
+
+void
+ki2c_writereg(sc, reg, val)
+	struct ki2c_softc *sc;
+	int reg;
+	u_int val;
+{
+	u_char *addr = sc->sc_reg + sc->sc_regstep * reg;
+
+	*addr = val;
+	asm volatile ("eieio");
+	delay(10);
+}
+
+u_int
+ki2c_getmode(sc)
+	struct ki2c_softc *sc;
+{
+	return ki2c_readreg(sc, MODE) & I2C_MODE;
+}
+
+void
+ki2c_setmode(sc, mode)
+	struct ki2c_softc *sc;
+	u_int mode;
+{
+	u_int x;
+
+	KASSERT((mode & ~I2C_MODE) == 0);
+	x = ki2c_readreg(sc, MODE);
+	x &= ~I2C_MODE;
+	x |= mode;
+	ki2c_writereg(sc, MODE, x);
+}
+
+u_int
+ki2c_getspeed(sc)
+	struct ki2c_softc *sc;
+{
+	return ki2c_readreg(sc, MODE) & I2C_SPEED;
+}
+
+void
+ki2c_setspeed(sc, speed)
+	struct ki2c_softc *sc;
+	u_int speed;
+{
+	u_int x;
+
+	KASSERT((speed & ~I2C_SPEED) == 0);
+	x = ki2c_readreg(sc, MODE);
+	x &= ~I2C_SPEED;
+	x |= speed;
+	ki2c_writereg(sc, MODE, x);
+}
+
+int
+ki2c_intr(sc)
+	struct ki2c_softc *sc;
+{
+	u_int isr, x;
+
+	isr = ki2c_readreg(sc, ISR);
+
+	if (isr & I2C_INT_ADDR) {
+#if 0
+		if ((ki2c_readreg(sc, STATUS) & I2C_ST_LASTAAK) == 0) {
+			/* No slave responded. */
+			sc->sc_flags |= I2C_ERROR;
+			goto out;
+		}
+#endif
+
+		if (sc->sc_flags & I2C_READING) {
+			if (sc->sc_resid > 1) {
+				x = ki2c_readreg(sc, CONTROL);
+				x |= I2C_CT_AAK;
+				ki2c_writereg(sc, CONTROL, x);
+			}
+		} else {
+			ki2c_writereg(sc, DATA, *sc->sc_data++);
+			sc->sc_resid--;
+		}
+	}
+
+	if (isr & I2C_INT_DATA) {
+		if (sc->sc_flags & I2C_READING) {
+			*sc->sc_data++ = ki2c_readreg(sc, DATA);
+			sc->sc_resid--;
+
+			if (sc->sc_resid == 0) {	/* Completed */
+				ki2c_writereg(sc, CONTROL, 0);
+				goto out;
+			}
+		} else {
+#if 0
+			if ((ki2c_readreg(sc, STATUS) & I2C_ST_LASTAAK) == 0) {
+				/* No slave responded. */
+				sc->sc_flags |= I2C_ERROR;
+				goto out;
+			}
+#endif
+
+			if (sc->sc_resid == 0) {
+				x = ki2c_readreg(sc, CONTROL) | I2C_CT_STOP;
+				ki2c_writereg(sc, CONTROL, x);
+			} else {
+				ki2c_writereg(sc, DATA, *sc->sc_data++);
+				sc->sc_resid--;
+			}
+		}
+	}
+
+out:
+	if (isr & I2C_INT_STOP) {
+		ki2c_writereg(sc, CONTROL, 0);
+		sc->sc_flags &= ~I2C_BUSY;
+	}
+
+	ki2c_writereg(sc, ISR, isr);
+
+	return 1;
+}
+
+int
+ki2c_poll(sc, timo)
+	struct ki2c_softc *sc;
+	int timo;
+{
+	while (sc->sc_flags & I2C_BUSY) {
+		if (ki2c_readreg(sc, ISR))
+			ki2c_intr(sc);
+		timo -= 100;
+		if (timo < 0) {
+			printf("i2c_poll: timeout\n");
+			return -1;
+		}
+		delay(100);
+	}
+	return 0;
+}
+
+int
+ki2c_start(sc, addr, subaddr, data, len)
+	struct ki2c_softc *sc;
+	int addr, subaddr, len;
+	void *data;
+{
+	int rw = (sc->sc_flags & I2C_READING) ? 1 : 0;
+	int timo, x;
+
+	KASSERT((addr & 1) == 0);
+
+	sc->sc_data = data;
+	sc->sc_resid = len;
+	sc->sc_flags |= I2C_BUSY;
+
+	timo = 1000 + len * 200;
+
+	/* XXX TAS3001 sometimes takes 50ms to finish writing registers. */
+	/* if (addr == 0x68) */
+		timo += 100000;
+
+	ki2c_writereg(sc, ADDR, addr | rw);
+	ki2c_writereg(sc, SUBADDR, subaddr);
+
+	x = ki2c_readreg(sc, CONTROL) | I2C_CT_ADDR;
+	ki2c_writereg(sc, CONTROL, x);
+
+	if (ki2c_poll(sc, timo))
+		return -1;
+	if (sc->sc_flags & I2C_ERROR) {
+		printf("I2C_ERROR\n");
+		return -1;
+	}
+	return 0;
+}
+
+int
+ki2c_read(sc, addr, subaddr, data, len)
+	struct ki2c_softc *sc;
+	int addr, subaddr, len;
+	void *data;
+{
+	sc->sc_flags = I2C_READING;
+	return ki2c_start(sc, addr, subaddr, data, len);
+}
+
+int
+ki2c_write(sc, addr, subaddr, data, len)
+	struct ki2c_softc *sc;
+	int addr, subaddr, len;
+	const void *data;
+{
+	sc->sc_flags = 0;
+	return ki2c_start(sc, addr, subaddr, (void *)data, len);
+}
diff --git a/sys/arch/macppc/dev/snapper.c b/sys/arch/macppc/dev/snapper.c
new file mode 100644
index 00000000000..ed014b02cda
--- /dev/null
+++ b/sys/arch/macppc/dev/snapper.c
@@ -0,0 +1,1528 @@
+/*	$NetBSD: snapper.c,v 1.1 2003/12/27 02:19:34 grant Exp $	*/
+/*	Id: snapper.c,v 1.11 2002/10/31 17:42:13 tsubai Exp	*/
+
+/*-
+ * Copyright (c) 2002 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.ti.com/sc/docs/products/analog/tas3004.html
+ */
+
+#include <sys/param.h>
+#include <sys/audioio.h>
+#include <sys/device.h>
+#include <sys/malloc.h>
+#include <sys/systm.h>
+
+#include <dev/auconv.h>
+#include <dev/audio_if.h>
+#include <dev/mulaw.h>
+#include <dev/ofw/openfirm.h>
+#include <macppc/dev/dbdma.h>
+
+#include <uvm/uvm_extern.h>
+
+#include <machine/autoconf.h>
+#include <machine/pio.h>
+
+#ifdef SNAPPER_DEBUG
+# define DPRINTF(x) printf x 
+#else
+# define DPRINTF(x)
+#endif
+
+#define	SNAPPER_DMALIST_MAX	32
+#define	SNAPPER_DMASEG_MAX	NBPG
+
+struct snapper_dma {
+	bus_dmamap_t map;
+	caddr_t addr;
+	bus_dma_segment_t segs[SNAPPER_DMALIST_MAX];
+	int nsegs;
+	size_t size;
+	struct snapper_dma *next;
+};
+
+struct snapper_softc {
+	struct device sc_dev;
+	int sc_flags;
+	int sc_node;
+
+	void (*sc_ointr)(void *);	/* dma completion intr handler */
+	void *sc_oarg;			/* arg for sc_ointr() */
+	int sc_opages;			/* # of output pages */
+
+	void (*sc_iintr)(void *);	/* dma completion intr handler */
+	void *sc_iarg;			/* arg for sc_iintr() */
+
+	u_int sc_record_source;		/* recording source mask */
+	u_int sc_output_mask;		/* output source mask */
+
+	u_char *sc_reg;
+	struct device *sc_i2c;
+
+	u_int sc_vol_l;
+	u_int sc_vol_r;
+
+	bus_dma_tag_t sc_dmat;
+	dbdma_regmap_t *sc_odma;
+	dbdma_regmap_t *sc_idma;
+	struct dbdma_command *sc_odmacmd, *sc_odmap;
+	struct dbdma_command *sc_idmacmd, *sc_idmap;
+	dbdma_t sc_odbdma, sc_idbdma;
+
+	struct snapper_dma *sc_dmas;
+};
+
+int snapper_match(struct device *, void *, void *);
+void snapper_attach(struct device *, struct device *, void *);
+void snapper_defer(struct device *);
+int snapper_intr(void *);
+int snapper_open(void *, int);
+void snapper_close(void *);
+int snapper_query_encoding(void *, struct audio_encoding *);
+int snapper_set_params(void *, int, int, struct audio_params *,
+    struct audio_params *);
+int snapper_round_blocksize(void *, int);
+int snapper_halt_output(void *);
+int snapper_halt_input(void *);
+int snapper_getdev(void *, struct audio_device *);
+int snapper_set_port(void *, mixer_ctrl_t *);
+int snapper_get_port(void *, mixer_ctrl_t *);
+int snapper_query_devinfo(void *, mixer_devinfo_t *);
+size_t snapper_round_buffersize(void *, int, size_t);
+paddr_t snapper_mappage(void *, void *, off_t, int);
+int snapper_get_props(void *);
+int snapper_trigger_output(void *, void *, void *, int, void (*)(void *),
+    void *, struct audio_params *);
+int snapper_trigger_input(void *, void *, void *, int, void (*)(void *),
+    void *, struct audio_params *);
+void snapper_set_volume(struct snapper_softc *, int, int);
+int snapper_set_rate(struct snapper_softc *, int);
+void snapper_config(struct snapper_softc *sc, int node, struct device *parent);
+
+int tas3004_write(struct snapper_softc *, u_int, const void *);
+static int gpio_read(char *);
+static void gpio_write(char *, int);
+void snapper_mute_speaker(struct snapper_softc *, int);
+void snapper_mute_headphone(struct snapper_softc *, int);
+int snapper_cint(void *);
+int tas3004_init(struct snapper_softc *);
+void snapper_init(struct snapper_softc *, int);
+void *snapper_allocm(void *h, int dir, size_t size, int type, int flags);
+
+static void mono16_to_stereo16(void *, u_char *, int);
+static void swap_bytes_mono16_to_stereo16(void *, u_char *, int);
+
+/* XXX */
+int ki2c_setmode(struct device *, int);
+int ki2c_write(struct device *, int, int, const void *, int);
+void ki2c_writereg(struct device *, int, u_int);
+
+
+struct cfattach snapper_ca = {
+	sizeof(struct snapper_softc), snapper_match, snapper_attach
+};
+struct cfdriver snapper_cd = {
+	NULL, "snapper", DV_DULL
+};
+
+struct audio_hw_if snapper_hw_if = {
+	snapper_open,
+	snapper_close,
+	NULL,
+	snapper_query_encoding,
+	snapper_set_params,
+	snapper_round_blocksize,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	NULL,
+	snapper_halt_output,
+	snapper_halt_input,
+	NULL,
+	snapper_getdev,
+	NULL,
+	snapper_set_port,
+	snapper_get_port,
+	snapper_query_devinfo,
+	snapper_allocm,		/* allocm */
+	NULL,
+	snapper_round_buffersize,
+	snapper_mappage,
+	snapper_get_props,
+	snapper_trigger_output,
+	snapper_trigger_input,
+};
+
+struct audio_device snapper_device = {
+	"SNAPPER",
+	"",
+	"snapper"
+};
+
+static u_char *amp_mute;
+static u_char *headphone_mute;
+static u_char *audio_hw_reset;
+static u_char *headphone_detect;
+static int headphone_detect_active;
+
+
+/* I2S registers */
+#define I2S_INT		0x00
+#define I2S_FORMAT	0x10
+#define I2S_FRAMECOUNT	0x40
+#define I2S_FRAMEMATCH	0x50
+#define I2S_WORDSIZE	0x60
+
+/* TAS3004 registers */
+#define DEQ_MCR1	0x01	/* Main control register 1 (1byte) */
+#define DEQ_DRC		0x02	/* Dynamic range compression (6bytes?) */
+#define DEQ_VOLUME	0x04	/* Volume (6bytes) */
+#define DEQ_TREBLE	0x05	/* Treble control (1byte) */
+#define DEQ_BASS	0x06	/* Bass control (1byte) */
+#define DEQ_MIXER_L	0x07	/* Mixer left gain (9bytes) */
+#define DEQ_MIXER_R	0x08	/* Mixer right gain (9bytes) */
+#define DEQ_LB0		0x0a	/* Left biquad 0 (15bytes) */
+#define DEQ_LB1		0x0b	/* Left biquad 1 (15bytes) */
+#define DEQ_LB2		0x0c	/* Left biquad 2 (15bytes) */
+#define DEQ_LB3		0x0d	/* Left biquad 3 (15bytes) */
+#define DEQ_LB4		0x0e	/* Left biquad 4 (15bytes) */
+#define DEQ_LB5		0x0f	/* Left biquad 5 (15bytes) */
+#define DEQ_LB6		0x10	/* Left biquad 6 (15bytes) */
+#define DEQ_RB0		0x13	/* Right biquad 0 (15bytes) */
+#define DEQ_RB1		0x14	/* Right biquad 1 (15bytes) */
+#define DEQ_RB2		0x15	/* Right biquad 2 (15bytes) */
+#define DEQ_RB3		0x16	/* Right biquad 3 (15bytes) */
+#define DEQ_RB4		0x17	/* Right biquad 4 (15bytes) */
+#define DEQ_RB5		0x18	/* Right biquad 5 (15bytes) */
+#define DEQ_RB6		0x19	/* Right biquad 6 (15bytes) */
+#define DEQ_LLB		0x21	/* Left loudness biquad (15bytes) */
+#define DEQ_RLB		0x22	/* Right loudness biquad (15bytes) */
+#define DEQ_LLB_GAIN	0x23	/* Left loudness biquad gain (3bytes) */
+#define DEQ_RLB_GAIN	0x24	/* Right loudness biquad gain (3bytes) */
+#define DEQ_ACR		0x40	/* Analog control register (1byte) */
+#define DEQ_MCR2	0x43	/* Main control register 2 (1byte) */
+
+#define DEQ_MCR1_FL	0x80	/* Fast load */
+#define DEQ_MCR1_SC	0x40	/* SCLK frequency */
+#define  DEQ_MCR1_SC_32	0x00	/*  32fs */
+#define  DEQ_MCR1_SC_64	0x40	/*  64fs */
+#define DEQ_MCR1_SM	0x30	/* Output serial port mode */
+#define  DEQ_MCR1_SM_L	0x00	/*  Left justified */
+#define  DEQ_MCR1_SM_R	0x10	/*  Right justified */
+#define  DEQ_MCR1_SM_I2S 0x20	/*  I2S */
+#define DEQ_MCR1_W	0x03	/* Serial port word length */
+#define  DEQ_MCR1_W_16	0x00	/*  16 bit */
+#define  DEQ_MCR1_W_18	0x01	/*  18 bit */
+#define  DEQ_MCR1_W_20	0x02	/*  20 bit */
+
+#define DEQ_MCR2_DL	0x80	/* Download */
+#define DEQ_MCR2_AP	0x02	/* All pass mode */
+
+#define DEQ_ACR_ADM	0x80	/* ADC output mode */
+#define DEQ_ACR_LRB	0x40	/* Select B input */
+#define DEQ_ACR_DM	0x0c	/* De-emphasis control */
+#define  DEQ_ACR_DM_OFF	0x00	/*  off */
+#define  DEQ_ACR_DM_48	0x04	/*  fs = 48kHz */
+#define  DEQ_ACR_DM_44	0x08	/*  fs = 44.1kHz */
+#define DEQ_ACR_INP	0x02	/* Analog input select */
+#define  DEQ_ACR_INP_A	0x00	/*  A */
+#define  DEQ_ACR_INP_B	0x02	/*  B */
+#define DEQ_ACR_APD	0x01	/* Analog power down */
+
+struct tas3004_reg {
+	u_char MCR1[1];
+	u_char DRC[6];
+	u_char VOLUME[6];
+	u_char TREBLE[1];
+	u_char BASS[1];
+	u_char MIXER_L[9];
+	u_char MIXER_R[9];
+	u_char LB0[15];
+	u_char LB1[15];
+	u_char LB2[15];
+	u_char LB3[15];
+	u_char LB4[15];
+	u_char LB5[15];
+	u_char LB6[15];
+	u_char RB0[15];
+	u_char RB1[15];
+	u_char RB2[15];
+	u_char RB3[15];
+	u_char RB4[15];
+	u_char RB5[15];
+	u_char RB6[15];
+	u_char LLB[15];
+	u_char RLB[15];
+	u_char LLB_GAIN[3];
+	u_char RLB_GAIN[3];
+	u_char ACR[1];
+	u_char MCR2[1];
+};
+
+#define GPIO_OUTSEL	0xf0	/* Output select */
+		/*	0x00	GPIO bit0 is output
+			0x10	media-bay power
+			0x20	reserved
+			0x30	MPIC */
+
+#define GPIO_ALTOE	0x08	/* Alternate output enable */
+		/*	0x00	Use DDR
+			0x08	Use output select */
+
+#define GPIO_DDR	0x04	/* Data direction */
+#define GPIO_DDR_OUTPUT	0x04	/* Output */
+#define GPIO_DDR_INPUT	0x00	/* Input */
+
+#define GPIO_LEVEL	0x02	/* Pin level (RO) */
+
+#define	GPIO_DATA	0x01	/* Data */
+
+int
+snapper_match(parent, match, aux)
+	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, "snapper") != 0)
+		return 0;
+
+	return 1;
+}
+
+void
+snapper_attach(parent, self, aux)
+	struct device *parent;
+	struct device *self;
+	void *aux;
+{
+	struct snapper_softc *sc = (struct snapper_softc *)self;
+	struct confargs *ca = aux;
+	int cirq, oirq, iirq, cirq_type, oirq_type, iirq_type;
+	int soundbus, intr[6];
+
+	ca->ca_reg[0] += ca->ca_baseaddr;
+	ca->ca_reg[2] += ca->ca_baseaddr;
+	ca->ca_reg[4] += ca->ca_baseaddr;
+
+	sc->sc_reg = mapiodev(ca->ca_reg[0], ca->ca_reg[1]);
+
+	sc->sc_node = ca->ca_node;
+
+	sc->sc_dmat = ca->ca_dmat;
+	sc->sc_odma = mapiodev(ca->ca_reg[2], ca->ca_reg[3]); /* out */
+	sc->sc_idma = mapiodev(ca->ca_reg[4], ca->ca_reg[5]); /* in */
+	sc->sc_odbdma = dbdma_alloc(sc->sc_dmat, SNAPPER_DMALIST_MAX);
+	sc->sc_odmacmd = sc->sc_odbdma->d_addr;
+	sc->sc_idbdma = dbdma_alloc(sc->sc_dmat, SNAPPER_DMALIST_MAX);
+	sc->sc_idmacmd = sc->sc_idbdma->d_addr;
+
+	soundbus = OF_child(ca->ca_node);
+	OF_getprop(soundbus, "interrupts", intr, sizeof intr);
+	cirq = intr[0];
+	oirq = intr[2];
+	iirq = intr[4];
+	cirq_type = intr[1] ? IST_LEVEL : IST_EDGE;
+	oirq_type = intr[3] ? IST_LEVEL : IST_EDGE;
+	iirq_type = intr[5] ? IST_LEVEL : IST_EDGE;
+
+	/* intr_establish(cirq, cirq_type, IPL_AUDIO, snapper_intr, sc); */
+	mac_intr_establish(parent, oirq, oirq_type, IPL_AUDIO, snapper_intr,
+	    sc, "snapper");
+	/* intr_establish(iirq, iirq_type, IPL_AUDIO, snapper_intr, sc); */
+
+	printf(": irq %d,%d,%d\n", sc->sc_dev.dv_xname, cirq, oirq, iirq);
+
+	snapper_config(sc,  sc->sc_node, parent);
+#if 0
+	config_interrupts(self, snapper_defer);
+#else
+	config_defer(self, snapper_defer);
+#endif
+}
+
+void
+snapper_defer(struct device *dev)
+{
+	struct snapper_softc *sc = (struct snapper_softc *)dev;
+	struct device *dv;
+
+	for (dv = alldevs.tqh_first; dv; dv=dv->dv_list.tqe_next)
+		if (strncmp(dv->dv_xname, "ki2c", 4) == 0 &&
+		    strncmp(dv->dv_parent->dv_xname, "macobio", 4) == 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 was failed to attach, what should we do? */
+
+	audio_attach_mi(&snapper_hw_if, sc, &sc->sc_dev);
+
+	/* ki2c_setmode(sc->sc_i2c, I2C_STDSUBMODE); */
+	snapper_init(sc, sc->sc_node);
+}
+
+int
+snapper_intr(v)
+	void *v;
+{
+	struct snapper_softc *sc = v;
+	struct dbdma_command *cmd = sc->sc_odmap;
+#ifndef __OpenBSD__
+	int count = sc->sc_opages;
+	int status;
+#else
+	u_int16_t c, status;
+#endif
+
+	/* if not set we are not running */
+	if (!cmd)
+		return (0);
+	DPRINTF(("snapper_intr: cmd %x\n", cmd));
+
+#ifndef __OpenBSD__
+	/* Fill used buffer(s). */
+	while (count-- > 0) {
+		if ((dbdma_ld16(&cmd->d_command) & 0x30) == 0x30) {
+			status = dbdma_ld16(&cmd->d_status);
+			cmd->d_status = 0;
+			if (status)	/* status == 0x8400 */
+				if (sc->sc_ointr)
+					(*sc->sc_ointr)(sc->sc_oarg);
+		}
+		cmd++;
+	}
+#else
+	c = in16rb(&cmd->d_command);
+	status = in16rb(&cmd->d_status);
+
+	if (c >> 12 == DBDMA_CMD_OUT_LAST)
+		sc->sc_odmap = sc->sc_odmacmd;
+	else
+		sc->sc_odmap++;
+
+	if (c & (DBDMA_INT_ALWAYS << 4)) {
+		cmd->d_status = 0;
+		if (status)	/* status == 0x8400 */
+			if (sc->sc_ointr)
+				(*sc->sc_ointr)(sc->sc_oarg);
+	}
+#endif
+
+	return 1;
+}
+
+int
+snapper_open(h, flags)
+	void *h;
+	int flags;
+{
+	return 0;
+}
+
+/*
+ * Close function is called at splaudio().
+ */
+void
+snapper_close(h)
+	void *h;
+{
+	struct snapper_softc *sc = h;
+
+	snapper_halt_output(sc);
+	snapper_halt_input(sc);
+
+	sc->sc_ointr = 0;
+	sc->sc_iintr = 0;
+}
+
+int
+snapper_query_encoding(h, ae)
+	void *h;
+	struct audio_encoding *ae;
+{
+	ae->flags = AUDIO_ENCODINGFLAG_EMULATED;
+
+	switch (ae->index) {
+	case 0:
+		strlcpy(ae->name, AudioEslinear, sizeof(ae->name));
+		ae->encoding = AUDIO_ENCODING_SLINEAR;
+		ae->precision = 16;
+		ae->flags = 0;
+		return 0;
+	case 1:
+		strlcpy(ae->name, AudioEslinear_be, sizeof(ae->name));
+		ae->encoding = AUDIO_ENCODING_SLINEAR_BE;
+		ae->precision = 16;
+		ae->flags = 0;
+		return 0;
+	case 2:
+		strlcpy(ae->name, AudioEslinear_le, sizeof(ae->name));
+		ae->encoding = AUDIO_ENCODING_SLINEAR_LE;
+		ae->precision = 16;
+		return 0;
+	case 3:
+		strlcpy(ae->name, AudioEslinear_be, sizeof(ae->name));
+		ae->encoding = AUDIO_ENCODING_ULINEAR_BE;
+		ae->precision = 16;
+		return 0;
+	case 4:
+		strlcpy(ae->name, AudioEslinear_le, sizeof(ae->name));
+		ae->encoding = AUDIO_ENCODING_ULINEAR_LE;
+		ae->precision = 16;
+		return 0;
+	case 5:
+		strlcpy(ae->name, AudioEmulaw, sizeof(ae->name));
+		ae->encoding = AUDIO_ENCODING_ULAW;
+		ae->precision = 8;
+		return 0;
+	case 6:
+		strlcpy(ae->name, AudioEmulaw, sizeof(ae->name));
+		ae->encoding = AUDIO_ENCODING_ALAW;
+		ae->precision = 8;
+		return 0;
+	default:
+		return EINVAL;
+	}
+}
+
+static void
+mono16_to_stereo16(v, p, cc)
+	void *v;
+	u_char *p;
+	int cc;
+{
+	int x;
+	int16_t *src, *dst;
+
+	src = (void *)(p + cc);
+	dst = (void *)(p + cc * 2);
+	while (cc > 0) {
+		x = *--src;
+		*--dst = x;
+		*--dst = x;
+		cc -= 2;
+	}
+}
+
+static void
+swap_bytes_mono16_to_stereo16(v, p, cc)
+	void *v;
+	u_char *p;
+	int cc;
+{
+	swap_bytes(v, p, cc);
+	mono16_to_stereo16(v, p, cc);
+}
+
+int
+snapper_set_params(h, setmode, usemode, play, rec)
+	void *h;
+	int setmode, usemode;
+	struct audio_params *play, *rec;
+{
+	struct snapper_softc *sc = h;
+	struct audio_params *p;
+	int mode, rate;
+
+	p = NULL;
+
+	/*
+	 * This device only has one clock, so make the sample rates match.
+	 */
+	if (play->sample_rate != rec->sample_rate &&
+	    usemode == (AUMODE_PLAY | AUMODE_RECORD)) {
+		if (setmode == AUMODE_PLAY) {
+			rec->sample_rate = play->sample_rate;
+			setmode |= AUMODE_RECORD;
+		} else if (setmode == AUMODE_RECORD) {
+			play->sample_rate = rec->sample_rate;
+			setmode |= AUMODE_PLAY;
+		} else
+			return EINVAL;
+	}
+
+	for (mode = AUMODE_RECORD; mode != -1;
+	     mode = mode == AUMODE_RECORD ? AUMODE_PLAY : -1) {
+		if ((setmode & mode) == 0)
+			continue;
+
+		p = mode == AUMODE_PLAY ? play : rec;
+
+		if (p->sample_rate < 4000 || p->sample_rate > 50000 ||
+		    (p->precision != 8 && p->precision != 16) ||
+		    (p->channels != 1 && p->channels != 2))
+			return EINVAL;
+
+		p->factor = 1;
+		p->sw_code = 0;
+
+		switch (p->encoding) {
+
+		case AUDIO_ENCODING_SLINEAR_LE:
+			if (p->channels == 2 && p->precision == 16) {
+				p->sw_code = swap_bytes;
+				break;
+			}
+			if (p->channels == 1 && p->precision == 16) {
+				p->factor = 2;
+				p->sw_code = swap_bytes_mono16_to_stereo16;
+				break;
+			}
+			return EINVAL;
+		case AUDIO_ENCODING_SLINEAR_BE:
+			if (p->channels == 1 && p->precision == 16) {
+				p->factor = 2;
+				p->sw_code = mono16_to_stereo16;
+				break;
+			}
+			if (p->channels == 2 && p->precision == 16)
+				break;
+
+			return EINVAL;
+
+		case AUDIO_ENCODING_ULINEAR_LE:
+			if (p->channels == 2 && p->precision == 16) {
+				p->sw_code = swap_bytes_change_sign16_be;
+				break;
+			}
+			return EINVAL;
+
+		case AUDIO_ENCODING_ULINEAR_BE:
+			if (p->channels == 2 && p->precision == 16) {
+				p->sw_code = change_sign16_be;
+				break;
+			}
+			return EINVAL;
+
+		case AUDIO_ENCODING_ULAW:
+			if (mode == AUMODE_PLAY) {
+				p->factor = 2;
+				p->sw_code = mulaw_to_slinear16_be;
+				break;
+			} else
+				break;		/* XXX */
+
+			return EINVAL;
+
+		case AUDIO_ENCODING_ALAW:
+			if (mode == AUMODE_PLAY) {
+				p->factor = 2;
+				p->sw_code = alaw_to_slinear16_be;
+				break;
+			}
+			return EINVAL;
+
+		default:
+			return EINVAL;
+		}
+	}
+
+	/* Set the speed */
+	rate = p->sample_rate;
+
+	if (snapper_set_rate(sc, rate))
+		return EINVAL;
+
+	return 0;
+}
+
+int
+snapper_round_blocksize(h, size)
+	void *h;
+	int size;
+{
+	if (size < NBPG)
+		size = NBPG;
+	return size & ~PGOFSET;
+}
+
+int
+snapper_halt_output(h)
+	void *h;
+{
+	struct snapper_softc *sc = h;
+
+	dbdma_stop(sc->sc_odma);
+	dbdma_reset(sc->sc_odma);
+	return 0;
+}
+
+int
+snapper_halt_input(h)
+	void *h;
+{
+	struct snapper_softc *sc = h;
+
+	dbdma_stop(sc->sc_idma);
+	dbdma_reset(sc->sc_idma);
+	return 0;
+}
+
+int
+snapper_getdev(h, retp)
+	void *h;
+	struct audio_device *retp;
+{
+	*retp = snapper_device;
+	return 0;
+}
+
+enum {
+	SNAPPER_MONITOR_CLASS,
+	SNAPPER_OUTPUT_CLASS,
+	SNAPPER_RECORD_CLASS,
+	SNAPPER_OUTPUT_SELECT,
+	SNAPPER_VOL_OUTPUT,
+	SNAPPER_INPUT_SELECT,
+	SNAPPER_VOL_INPUT,
+	SNAPPER_ENUM_LAST
+};
+
+int
+snapper_set_port(h, mc)
+	void *h;
+	mixer_ctrl_t *mc;
+{
+	struct snapper_softc *sc = h;
+	int l, r;
+
+	DPRINTF(("snapper_set_port dev = %d, type = %d\n", mc->dev, mc->type));
+
+	l = mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT];
+	r = mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT];
+
+	switch (mc->dev) {
+	case SNAPPER_OUTPUT_SELECT:
+		/* No change necessary? */
+		if (mc->un.mask == sc->sc_output_mask)
+			return 0;
+
+		snapper_mute_speaker(sc, 1);
+		snapper_mute_headphone(sc, 1);
+		if (mc->un.mask & 1 << 0)
+			snapper_mute_speaker(sc, 0);
+		if (mc->un.mask & 1 << 1)
+			snapper_mute_headphone(sc, 0);
+
+		sc->sc_output_mask = mc->un.mask;
+		return 0;
+
+	case SNAPPER_VOL_OUTPUT:
+		snapper_set_volume(sc, l, r);
+		return 0;
+
+	case SNAPPER_INPUT_SELECT:
+		/* no change necessary? */
+		if (mc->un.mask == sc->sc_record_source)
+			return 0;
+		switch (mc->un.mask) {
+		case 1 << 0: /* CD */
+		case 1 << 1: /* microphone */
+		case 1 << 2: /* line in */
+			/* XXX TO BE DONE */
+			break;
+		default: /* invalid argument */
+			return EINVAL;
+		}
+		sc->sc_record_source = mc->un.mask;
+		return 0;
+
+	case SNAPPER_VOL_INPUT:
+		/* XXX TO BE DONE */
+		return 0;
+	}
+
+	return ENXIO;
+}
+
+int
+snapper_get_port(h, mc)
+	void *h;
+	mixer_ctrl_t *mc;
+{
+	struct snapper_softc *sc = h;
+
+	DPRINTF(("snapper_get_port dev = %d, type = %d\n", mc->dev, mc->type));
+
+	switch (mc->dev) {
+	case SNAPPER_OUTPUT_SELECT:
+		mc->un.mask = sc->sc_output_mask;
+		return 0;
+
+	case SNAPPER_VOL_OUTPUT:
+		mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = sc->sc_vol_l;
+		mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = sc->sc_vol_r;
+		return 0;
+
+	case SNAPPER_INPUT_SELECT:
+		mc->un.mask = sc->sc_record_source;
+		return 0;
+
+	case SNAPPER_VOL_INPUT:
+		/* XXX TO BE DONE */
+		mc->un.value.level[AUDIO_MIXER_LEVEL_LEFT] = 0;
+		mc->un.value.level[AUDIO_MIXER_LEVEL_RIGHT] = 0;
+		return 0;
+
+	default:
+		return ENXIO;
+	}
+
+	return 0;
+}
+
+int
+snapper_query_devinfo(h, dip)
+	void *h;
+	mixer_devinfo_t *dip;
+{
+	switch (dip->index) {
+
+	case SNAPPER_OUTPUT_SELECT:
+		dip->mixer_class = SNAPPER_MONITOR_CLASS;
+		strlcpy(dip->label.name, AudioNoutput, sizeof(dip->label.name));
+		dip->type = AUDIO_MIXER_SET;
+		dip->prev = dip->next = AUDIO_MIXER_LAST;
+		dip->un.s.num_mem = 2;
+		strlcpy(dip->un.s.member[0].label.name, AudioNspeaker,
+		    strlen(dip->un.s.member[0].label.name));
+		dip->un.s.member[0].mask = 1 << 0;
+		strlcpy(dip->un.s.member[1].label.name, AudioNheadphone,
+		    strlen(dip->un.s.member[1].label.name));
+		dip->un.s.member[1].mask = 1 << 1;
+		return 0;
+
+	case SNAPPER_VOL_OUTPUT:
+		dip->mixer_class = SNAPPER_MONITOR_CLASS;
+		strlcpy(dip->label.name, AudioNmaster, sizeof(dip->label.name));
+		dip->type = AUDIO_MIXER_VALUE;
+		dip->prev = dip->next = AUDIO_MIXER_LAST;
+		dip->un.v.num_channels = 2;
+		strlcpy(dip->un.v.units.name, AudioNvolume,
+		strlen(dip->un.v.units.name));
+		return 0;
+
+	case SNAPPER_INPUT_SELECT:
+		dip->mixer_class = SNAPPER_RECORD_CLASS;
+		strlcpy(dip->label.name, AudioNsource, sizeof(dip->label.name));
+		dip->type = AUDIO_MIXER_SET;
+		dip->prev = dip->next = AUDIO_MIXER_LAST;
+		dip->un.s.num_mem = 3;
+		strlcpy(dip->un.s.member[0].label.name, AudioNcd,
+		    sizeof(dip->un.s.member[0].label.name));
+		dip->un.s.member[0].mask = 1 << 0;
+		strlcpy(dip->un.s.member[1].label.name, AudioNmicrophone,
+		    sizeof(dip->un.s.member[1].label.name));
+		dip->un.s.member[1].mask = 1 << 1;
+		strlcpy(dip->un.s.member[2].label.name, AudioNline,
+		    sizeof(dip->un.s.member[2].label.name));
+		dip->un.s.member[2].mask = 1 << 2;
+		return 0;
+
+	case SNAPPER_VOL_INPUT:
+		dip->mixer_class = SNAPPER_RECORD_CLASS;
+		strlcpy(dip->label.name, AudioNrecord, sizeof(dip->label.name));
+		dip->type = AUDIO_MIXER_VALUE;
+		dip->prev = dip->next = AUDIO_MIXER_LAST;
+		dip->un.v.num_channels = 2;
+		strlcpy(dip->un.v.units.name, AudioNvolume,
+		    sizeof(dip->un.v.units.name));
+		return 0;
+
+	case SNAPPER_MONITOR_CLASS:
+		dip->mixer_class = SNAPPER_MONITOR_CLASS;
+		strlcpy(dip->label.name, AudioCmonitor, sizeof(dip->label.name));
+		dip->type = AUDIO_MIXER_CLASS;
+		dip->next = dip->prev = AUDIO_MIXER_LAST;
+		return 0;
+
+	case SNAPPER_OUTPUT_CLASS:
+		dip->mixer_class = SNAPPER_OUTPUT_CLASS;
+		strlcpy(dip->label.name, AudioCoutputs,
+		    sizeof(dip->label.name));
+		dip->type = AUDIO_MIXER_CLASS;
+		dip->next = dip->prev = AUDIO_MIXER_LAST;
+		return 0;
+
+	case SNAPPER_RECORD_CLASS:
+		dip->mixer_class = SNAPPER_RECORD_CLASS;
+		strlcpy(dip->label.name, AudioCrecord, sizeof(dip->label.name));
+		dip->type = AUDIO_MIXER_CLASS;
+		dip->next = dip->prev = AUDIO_MIXER_LAST;
+		return 0;
+	}
+
+	return ENXIO;
+}
+
+size_t
+snapper_round_buffersize(h, dir, size)
+	void *h;
+	int dir;
+	size_t size;
+{
+	if (size > 65536)
+		size = 65536;
+	return size;
+}
+
+paddr_t
+snapper_mappage(h, mem, off, prot)
+	void *h;
+	void *mem;
+	off_t off;
+	int prot;
+{
+	if (off < 0)
+		return -1;
+	return -1;	/* XXX */
+}
+
+int
+snapper_get_props(h)
+	void *h;
+{
+	return AUDIO_PROP_FULLDUPLEX /* | AUDIO_PROP_MMAP */;
+}
+
+int
+snapper_trigger_output(h, start, end, bsize, intr, arg, param)
+	void *h;
+	void *start, *end;
+	int bsize;
+	void (*intr)(void *);
+	void *arg;
+	struct audio_params *param;
+{
+	struct snapper_softc *sc = h;
+	struct snapper_dma *p;
+	struct dbdma_command *cmd = sc->sc_odmacmd;
+	vaddr_t spa, pa, epa;
+	int c;
+
+	DPRINTF(("trigger_output %p %p 0x%x\n", start, end, bsize));
+
+	for (p = sc->sc_dmas; p && p->addr != start; p = p->next);
+	if (!p)
+		return -1;
+
+	sc->sc_ointr = intr;
+	sc->sc_oarg = arg;
+	sc->sc_odmap = sc->sc_odmacmd;
+
+	spa = p->segs[0].ds_addr;
+	c = DBDMA_CMD_OUT_MORE;
+	for (pa = spa, epa = spa + (end - start);
+	    pa < epa; pa += bsize, cmd++) {
+
+		if (pa + bsize == epa)
+			c = DBDMA_CMD_OUT_LAST;
+
+		DBDMA_BUILD(cmd, c, 0, bsize, pa, DBDMA_INT_ALWAYS,
+			DBDMA_WAIT_NEVER, DBDMA_BRANCH_NEVER);
+	}
+
+	DBDMA_BUILD(cmd, DBDMA_CMD_NOP, 0, 0, 0,
+		DBDMA_INT_NEVER, DBDMA_WAIT_NEVER, DBDMA_BRANCH_ALWAYS);
+	dbdma_st32(&cmd->d_cmddep, sc->sc_odbdma->d_paddr);
+
+	dbdma_start(sc->sc_odma, sc->sc_odbdma);
+
+	return 0;
+}
+
+int
+snapper_trigger_input(h, start, end, bsize, intr, arg, param)
+	void *h;
+	void *start, *end;
+	int bsize;
+	void (*intr)(void *);
+	void *arg;
+	struct audio_params *param;
+{
+	printf("snapper_trigger_input called\n");
+
+	return 1;
+}
+
+void
+snapper_set_volume(sc, left, right)
+	struct snapper_softc *sc;
+	int left, right;
+{
+	u_char vol[6];
+
+	sc->sc_vol_l = left;
+	sc->sc_vol_r = right;
+
+	left <<= 8;	/* XXX for now */
+	right <<= 8;
+
+	vol[0] = left >> 16;
+	vol[1] = left >> 8;
+	vol[2] = left;
+	vol[3] = right >> 16;
+	vol[4] = right >> 8;
+	vol[5] = right;
+
+	tas3004_write(sc, DEQ_VOLUME, vol);
+}
+
+#define CLKSRC_49MHz	0x80000000	/* Use 49152000Hz Osc. */
+#define CLKSRC_45MHz	0x40000000	/* Use 45158400Hz Osc. */
+#define CLKSRC_18MHz	0x00000000	/* Use 18432000Hz Osc. */
+#define MCLK_DIV	0x1f000000	/* MCLK = SRC / DIV */
+#define  MCLK_DIV1	0x14000000	/*  MCLK = SRC */
+#define  MCLK_DIV3	0x13000000	/*  MCLK = SRC / 3 */
+#define  MCLK_DIV5	0x12000000	/*  MCLK = SRC / 5 */
+#define SCLK_DIV	0x00f00000	/* SCLK = MCLK / DIV */
+#define  SCLK_DIV1	0x00800000
+#define  SCLK_DIV3	0x00900000
+#define SCLK_MASTER	0x00080000	/* Master mode */
+#define SCLK_SLAVE	0x00000000	/* Slave mode */
+#define SERIAL_FORMAT	0x00070000
+#define  SERIAL_SONY	0x00000000
+#define  SERIAL_64x	0x00010000
+#define  SERIAL_32x	0x00020000
+#define  SERIAL_DAV	0x00040000
+#define  SERIAL_SILICON	0x00050000
+
+// rate = fs = LRCLK
+// SCLK = 64*LRCLK (I2S)
+// MCLK = 256fs (typ. -- changeable)
+
+// MCLK = clksrc / mdiv
+// SCLK = MCLK / sdiv
+// rate = SCLK / 64    ( = LRCLK = fs)
+
+int
+snapper_set_rate(sc, rate)
+	struct snapper_softc *sc;
+	int rate;
+{
+	u_int reg = 0;
+	int MCLK;
+	int clksrc, mdiv, sdiv;
+	int mclk_fs;
+
+	switch (rate) {
+	case 8000:
+		clksrc = 18432000;		/* 18MHz */
+		reg = CLKSRC_18MHz;
+		mclk_fs = 256;
+		break;
+
+	case 44100:
+		clksrc = 45158400;		/* 45MHz */
+		reg = CLKSRC_45MHz;
+		mclk_fs = 256;
+		break;
+
+	case 48000:
+		clksrc = 49152000;		/* 49MHz */
+		reg = CLKSRC_49MHz;
+		mclk_fs = 256;
+		break;
+
+	default:
+		return EINVAL;
+	}
+
+	MCLK = rate * mclk_fs;
+	mdiv = clksrc / MCLK;			// 4
+	sdiv = mclk_fs / 64;			// 4
+
+	switch (mdiv) {
+	case 1:
+		reg |= MCLK_DIV1;
+		break;
+	case 3:
+		reg |= MCLK_DIV3;
+		break;
+	case 5:
+		reg |= MCLK_DIV5;
+		break;
+	default:
+		reg |= ((mdiv / 2 - 1) << 24) & 0x1f000000;
+		break;
+	}
+
+	switch (sdiv) {
+	case 1:
+		reg |= SCLK_DIV1;
+		break;
+	case 3:
+		reg |= SCLK_DIV3;
+		break;
+	default:
+		reg |= ((sdiv / 2 - 1) << 20) & 0x00f00000;
+		break;
+	}
+
+	reg |= SCLK_MASTER;	/* XXX master mode */
+
+	reg |= SERIAL_64x;
+
+	/* stereo input and output */
+	DPRINTF(("I2SSetDataWordSizeReg 0x%08x -> 0x%08x\n",
+	    in32rb(sc->sc_reg + I2S_WORDSIZE), 0x02000200));
+	out32rb(sc->sc_reg + I2S_WORDSIZE, 0x02000200);
+
+	DPRINTF(("I2SSetSerialFormatReg 0x%x -> 0x%x\n",
+	    in32rb(sc->sc_reg + I2S_FORMAT), reg));
+	out32rb(sc->sc_reg + I2S_FORMAT, reg);
+
+	return 0;
+}
+
+#define DEQaddr 0x6a
+
+const struct tas3004_reg tas3004_initdata = {
+	{ DEQ_MCR1_SC_64 | DEQ_MCR1_SM_I2S | DEQ_MCR1_W_20 },	/* MCR1 */
+	{ 1, 0, 0, 0, 0, 0 },					/* DRC */
+	{ 0, 0, 0, 0, 0, 0 },					/* VOLUME */
+	{ 0x72 },						/* TREBLE */
+	{ 0x72 },						/* BASS */
+	{ 0x10, 0x00, 0x00, 0, 0, 0, 0, 0, 0 },			/* MIXER_L */
+	{ 0x10, 0x00, 0x00, 0, 0, 0, 0, 0, 0 },			/* MIXER_R */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0x10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },	/* BIQUAD */
+	{ 0, 0, 0 },						/* LLB_GAIN */
+	{ 0, 0, 0 },						/* RLB_GAIN */
+	{ 0 },							/* ACR */
+	{ 0 }							/* MCR2 */
+};
+
+const char tas3004_regsize[] = {
+	0,					/* 0x00 */
+	sizeof tas3004_initdata.MCR1,		/* 0x01 */
+	sizeof tas3004_initdata.DRC,		/* 0x02 */
+	0,					/* 0x03 */
+	sizeof tas3004_initdata.VOLUME,		/* 0x04 */
+	sizeof tas3004_initdata.TREBLE,		/* 0x05 */
+	sizeof tas3004_initdata.BASS,		/* 0x06 */
+	sizeof tas3004_initdata.MIXER_L,	/* 0x07 */
+	sizeof tas3004_initdata.MIXER_R,	/* 0x08 */
+	0,					/* 0x09 */
+	sizeof tas3004_initdata.LB0,		/* 0x0a */
+	sizeof tas3004_initdata.LB1,		/* 0x0b */
+	sizeof tas3004_initdata.LB2,		/* 0x0c */
+	sizeof tas3004_initdata.LB3,		/* 0x0d */
+	sizeof tas3004_initdata.LB4,		/* 0x0e */
+	sizeof tas3004_initdata.LB5,		/* 0x0f */
+	sizeof tas3004_initdata.LB6,		/* 0x10 */
+	0,					/* 0x11 */
+	0,					/* 0x12 */
+	sizeof tas3004_initdata.RB0,		/* 0x13 */
+	sizeof tas3004_initdata.RB1,		/* 0x14 */
+	sizeof tas3004_initdata.RB2,		/* 0x15 */
+	sizeof tas3004_initdata.RB3,		/* 0x16 */
+	sizeof tas3004_initdata.RB4,		/* 0x17 */
+	sizeof tas3004_initdata.RB5,		/* 0x18 */
+	sizeof tas3004_initdata.RB6,		/* 0x19 */
+	0,0,0,0, 0,0,
+	0,					/* 0x20 */
+	sizeof tas3004_initdata.LLB,		/* 0x21 */
+	sizeof tas3004_initdata.RLB,		/* 0x22 */
+	sizeof tas3004_initdata.LLB_GAIN,	/* 0x23 */
+	sizeof tas3004_initdata.RLB_GAIN,	/* 0x24 */
+	0,0,0,0, 0,0,0,0, 0,0,0,
+	0,0,0,0, 0,0,0,0, 0,0,0,0, 0,0,0,0,
+	sizeof tas3004_initdata.ACR,		/* 0x40 */
+	0,					/* 0x41 */
+	0,					/* 0x42 */
+	sizeof tas3004_initdata.MCR2		/* 0x43 */
+};
+
+int
+tas3004_write(sc, reg, data)
+	struct snapper_softc *sc;
+	u_int reg;
+	const void *data;
+{
+	int size;
+
+	KASSERT(reg < sizeof tas3004_regsize);
+	size = tas3004_regsize[reg];
+	KASSERT(size > 0);
+
+	if (ki2c_write(sc->sc_i2c, DEQaddr, reg, data, size))
+		return -1;
+
+	return 0;
+}
+
+int
+gpio_read(addr)
+	char *addr;
+{
+	if (*addr & GPIO_DATA)
+		return 1;
+	return 0;
+}
+
+void
+gpio_write(addr, val)
+	char *addr;
+	int val;
+{
+	u_int data = GPIO_DDR_OUTPUT;
+
+	if (val)
+		data |= GPIO_DATA;
+	*addr = data;
+	asm volatile ("eieio");
+}
+
+#define headphone_active 0	/* XXX OF */
+#define amp_active 0		/* XXX OF */
+
+void
+snapper_mute_speaker(sc, mute)
+	struct snapper_softc *sc;
+	int mute;
+{
+	u_int x;
+
+	DPRINTF(("ampmute %d --> ", gpio_read(amp_mute)));
+
+	if (mute)
+		x = amp_active;		/* mute */
+	else
+		x = !amp_active;	/* unmute */
+	if (x != gpio_read(amp_mute))
+		gpio_write(amp_mute, x);
+
+	DPRINTF(("%d\n", gpio_read(amp_mute)));
+}
+
+void
+snapper_mute_headphone(sc, mute)
+	struct snapper_softc *sc;
+	int mute;
+{
+	u_int x;
+
+	DPRINTF(("headphonemute %d --> ", gpio_read(headphone_mute)));
+
+	if (mute)
+		x = headphone_active;	/* mute */
+	else
+		x = !headphone_active;	/* unmute */
+	if (x != gpio_read(headphone_mute))
+		gpio_write(headphone_mute, x);
+
+	DPRINTF(("%d\n", gpio_read(headphone_mute)));
+}
+
+int
+snapper_cint(v)
+	void *v;
+{
+	struct snapper_softc *sc = v;
+	u_int sense;
+
+	sense = *headphone_detect;
+	DPRINTF(("headphone detect = 0x%x\n", sense));
+
+	if (((sense & 0x02) >> 1) == headphone_detect_active) {
+		DPRINTF(("headphone is inserted\n"));
+		snapper_mute_speaker(sc, 1);
+		snapper_mute_headphone(sc, 0);
+		sc->sc_output_mask = 1 << 1;
+	} else {
+		DPRINTF(("headphone is NOT inserted\n"));
+		snapper_mute_speaker(sc, 0);
+		snapper_mute_headphone(sc, 1);
+		sc->sc_output_mask = 1 << 0;
+	}
+
+	return 1;
+}
+
+#define reset_active 0	/* XXX OF */
+
+#define DEQ_WRITE(sc, reg, addr) \
+	if (tas3004_write(sc, reg, addr)) goto err
+
+int
+tas3004_init(sc)
+	struct snapper_softc *sc;
+{
+
+	/* No reset port.  Nothing to do. */
+	if (audio_hw_reset == NULL)
+		goto noreset;
+
+	/* Reset TAS3004. */
+	gpio_write(audio_hw_reset, !reset_active);	/* Negate RESET */
+	delay(100000);				/* XXX Really needed? */
+
+	gpio_write(audio_hw_reset, reset_active);	/* Assert RESET */
+	delay(1);
+
+	gpio_write(audio_hw_reset, !reset_active);	/* Negate RESET */
+	delay(10000);
+
+noreset:
+	DEQ_WRITE(sc, DEQ_LB0, tas3004_initdata.LB0);
+	DEQ_WRITE(sc, DEQ_LB1, tas3004_initdata.LB1);
+	DEQ_WRITE(sc, DEQ_LB2, tas3004_initdata.LB2);
+	DEQ_WRITE(sc, DEQ_LB3, tas3004_initdata.LB3);
+	DEQ_WRITE(sc, DEQ_LB4, tas3004_initdata.LB4);
+	DEQ_WRITE(sc, DEQ_LB5, tas3004_initdata.LB5);
+	DEQ_WRITE(sc, DEQ_LB6, tas3004_initdata.LB6);
+	DEQ_WRITE(sc, DEQ_RB0, tas3004_initdata.RB0);
+	DEQ_WRITE(sc, DEQ_RB1, tas3004_initdata.RB1);
+	DEQ_WRITE(sc, DEQ_RB1, tas3004_initdata.RB1);
+	DEQ_WRITE(sc, DEQ_RB2, tas3004_initdata.RB2);
+	DEQ_WRITE(sc, DEQ_RB3, tas3004_initdata.RB3);
+	DEQ_WRITE(sc, DEQ_RB4, tas3004_initdata.RB4);
+	DEQ_WRITE(sc, DEQ_RB5, tas3004_initdata.RB5);
+	DEQ_WRITE(sc, DEQ_MCR1, tas3004_initdata.MCR1);
+	DEQ_WRITE(sc, DEQ_MCR2, tas3004_initdata.MCR2);
+	DEQ_WRITE(sc, DEQ_DRC, tas3004_initdata.DRC);
+	DEQ_WRITE(sc, DEQ_VOLUME, tas3004_initdata.VOLUME);
+	DEQ_WRITE(sc, DEQ_TREBLE, tas3004_initdata.TREBLE);
+	DEQ_WRITE(sc, DEQ_BASS, tas3004_initdata.BASS);
+	DEQ_WRITE(sc, DEQ_MIXER_L, tas3004_initdata.MIXER_L);
+	DEQ_WRITE(sc, DEQ_MIXER_R, tas3004_initdata.MIXER_R);
+	DEQ_WRITE(sc, DEQ_LLB, tas3004_initdata.LLB);
+	DEQ_WRITE(sc, DEQ_RLB, tas3004_initdata.RLB);
+	DEQ_WRITE(sc, DEQ_LLB_GAIN, tas3004_initdata.LLB_GAIN);
+	DEQ_WRITE(sc, DEQ_RLB_GAIN, tas3004_initdata.RLB_GAIN);
+	DEQ_WRITE(sc, DEQ_ACR, tas3004_initdata.ACR);
+
+	return 0;
+err:
+	printf("tas3004_init: error\n");
+	return -1;
+}
+
+/* FCR(0x3c) bits */
+#define I2S0CLKEN	0x1000
+#define I2S0EN		0x2000
+#define I2S1CLKEN	0x080000
+#define I2S1EN		0x100000
+
+#define FCR3C_BITMASK "\020\25I2S1EN\24I2S1CLKEN\16I2S0EN\15I2S0CLKEN"
+
+
+void
+snapper_config(sc, node, parent)
+	struct snapper_softc *sc;
+	int node;
+	struct device *parent;
+{
+	int gpio;
+	int headphone_detect_intr = -1, headphone_detect_intrtype;
+
+#if 0
+#ifdef SNAPPER_DEBUG
+	char fcr[32];
+
+	bitmask_snprintf(in32rb(0x8000003c), FCR3C_BITMASK, fcr, sizeof fcr);
+	printf("FCR(0x3c) 0x%s\n", fcr);
+#endif
+#endif
+
+	gpio = OF_getnodebyname(OF_parent(node), "gpio");
+	DPRINTF((" /gpio 0x%x\n", gpio));
+	gpio = OF_child(gpio);
+	while (gpio) {
+		char name[64], audio_gpio[64];
+		int intr[2];
+		paddr_t addr;
+
+		bzero(name, sizeof name);
+		bzero(audio_gpio, sizeof audio_gpio);
+		addr = 0;
+		OF_getprop(gpio, "name", name, sizeof name);
+		OF_getprop(gpio, "audio-gpio", audio_gpio, sizeof audio_gpio);
+		OF_getprop(gpio, "AAPL,address", &addr, sizeof addr);
+		/* printf("0x%x %s %s\n", gpio, name, audio_gpio); */
+
+		/* gpio5 */
+		if (strcmp(audio_gpio, "headphone-mute") == 0)
+			headphone_mute = mapiodev(addr,1);
+		/* gpio6 */
+		if (strcmp(audio_gpio, "amp-mute") == 0)
+			amp_mute = mapiodev(addr,1);
+		/* extint-gpio15 */
+		if (strcmp(audio_gpio, "headphone-detect") == 0) {
+			headphone_detect = mapiodev(addr,1);
+			OF_getprop(gpio, "audio-gpio-active-state",
+			    &headphone_detect_active, 4);
+			OF_getprop(gpio, "interrupts", intr, 8);
+			headphone_detect_intr = intr[0];
+			headphone_detect_intrtype = intr[1];
+		}
+		/* gpio11 (keywest-11) */
+		if (strcmp(audio_gpio, "audio-hw-reset") == 0)
+			audio_hw_reset = mapiodev(addr,1);
+		gpio = OF_peer(gpio);
+	}
+	DPRINTF((" headphone-mute %p\n", headphone_mute));
+	DPRINTF((" amp-mute %p\n", amp_mute));
+	DPRINTF((" headphone-detect %p\n", headphone_detect));
+	DPRINTF((" headphone-detect active %x\n", headphone_detect_active));
+	DPRINTF((" headphone-detect intr %x\n", headphone_detect_intr));
+	DPRINTF((" audio-hw-reset %p\n", audio_hw_reset));
+
+	if (headphone_detect_intr != -1)
+		mac_intr_establish(parent, headphone_detect_intr, IST_EDGE,
+		    IPL_AUDIO, snapper_cint, sc, "snapper_h");
+}
+void
+snapper_init(sc, node)
+	struct snapper_softc *sc;
+	int node;
+{
+
+	/* "sample-rates" (44100, 48000) */
+	snapper_set_rate(sc, 44100);
+
+	/* Enable headphone interrupt? */
+	*headphone_detect |= 0x80;
+	asm volatile ("eieio");
+
+	/* i2c_set_port(port); */
+
+#if 1
+	/* Enable I2C interrupts. */
+#define IER 4
+#define I2C_INT_DATA 0x01
+#define I2C_INT_ADDR 0x02
+#define I2C_INT_STOP 0x04
+	ki2c_writereg(sc->sc_i2c, IER,I2C_INT_DATA|I2C_INT_ADDR|I2C_INT_STOP);
+#endif
+
+	if (tas3004_init(sc))
+		return;
+
+	/* Update headphone status. */
+	snapper_cint(sc);
+
+	snapper_set_volume(sc, 80, 80);
+}
+
+void *
+snapper_allocm(void *h, int dir, size_t size, int type, int flags)
+{
+	struct snapper_softc *sc = h;
+	struct snapper_dma *p;
+	int error;
+
+	if (size > SNAPPER_DMALIST_MAX * SNAPPER_DMASEG_MAX)
+		return (NULL);
+
+	p = malloc(sizeof(*p), type, flags);
+	if (!p)
+		return (NULL);
+	bzero(p, sizeof(*p));
+
+	/* convert to the bus.h style, not used otherwise */
+	if (flags & M_NOWAIT)
+		flags = BUS_DMA_NOWAIT;
+
+	p->size = size;
+	if ((error = bus_dmamem_alloc(sc->sc_dmat, p->size, NBPG, 0, p->segs,
+	    1, &p->nsegs, flags)) != 0) {
+		printf("%s: unable to allocate dma, error = %d\n",
+		    sc->sc_dev.dv_xname, error);
+		free(p, type);
+		return NULL;
+	}
+
+	if ((error = bus_dmamem_map(sc->sc_dmat, p->segs, p->nsegs, p->size,
+	    &p->addr, flags | BUS_DMA_COHERENT)) != 0) {
+		printf("%s: unable to map dma, error = %d\n",
+		    sc->sc_dev.dv_xname, error);
+		bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
+		free(p, type);
+		return NULL;
+	}
+
+	if ((error = bus_dmamap_create(sc->sc_dmat, p->size, 1,
+	    p->size, 0, flags, &p->map)) != 0) {
+		printf("%s: unable to create dma map, error = %d\n",
+		    sc->sc_dev.dv_xname, error);
+		bus_dmamem_unmap(sc->sc_dmat, p->addr, size);
+		bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
+		free(p, type);
+		return NULL;
+	}
+
+	if ((error = bus_dmamap_load(sc->sc_dmat, p->map, p->addr, p->size,
+	    NULL, flags)) != 0) {
+		printf("%s: unable to load dma map, error = %d\n",
+		    sc->sc_dev.dv_xname, error);
+		bus_dmamap_destroy(sc->sc_dmat, p->map);
+		bus_dmamem_unmap(sc->sc_dmat, p->addr, size);
+		bus_dmamem_free(sc->sc_dmat, p->segs, p->nsegs);
+		free(p, type);
+		return NULL;
+	}
+
+	p->next = sc->sc_dmas;
+	sc->sc_dmas = p;
+
+	return p->addr;
+}