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toccata.c revision 1.13
      1 /* $NetBSD: toccata.c,v 1.13 2011/06/02 14:12:24 tsutsui Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1998, 1999, 2001, 2002 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Paul Kranenburg and Ignatios Souvatzis.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: toccata.c,v 1.13 2011/06/02 14:12:24 tsutsui Exp $");
     34 
     35 #include <sys/types.h>
     36 #include <sys/param.h>
     37 #include <sys/systm.h>
     38 #include <sys/kernel.h>
     39 #include <sys/device.h>
     40 #include <sys/fcntl.h>		/* FREAD */
     41 
     42 #include <machine/bus.h>
     43 
     44 #include <sys/audioio.h>
     45 #include <dev/audio_if.h>
     46 
     47 #include <dev/ic/ad1848reg.h>
     48 #include <dev/ic/ad1848var.h>
     49 
     50 #include <amiga/dev/zbusvar.h>
     51 #include <amiga/amiga/isr.h>
     52 
     53 
     54 /* Register offsets. XXX All of this is guesswork. */
     55 
     56 /*
     57  * The Toccata board consists of: GALs for ZBus AutoConfig(tm) glue, GALs
     58  * that interface the FIFO chips and the audio codec chip to the ZBus,
     59  * an AD1848 (or AD1845), and 2 Integrated Device Technology 7202LA
     60  * (1024x9bit FIFO) chips.
     61  */
     62 
     63 #define TOCC_FIFO_STAT	0x1ffe
     64 #define TOCC_FIFO_DATA	0x2000
     65 
     66 /*
     67  * I don't know whether the AD1848 PIO data registers are connected... and
     68  * at 2 or 3 accesses to read or write a data byte in the best case, I better
     69  * don't even think about it. The AD1848 address/status and data port are
     70  * here:
     71  */
     72 #define TOCC_CODEC_ADDR	0x67FF
     73 #define TOCC_CODEC_STAT	TOCC_CODEC_ADDR
     74 #define TOCC_CODEC_REG	0x6801
     75 
     76 /* fifo status bits, read */
     77 
     78 #define TOCC_FIFO_INT	0x80	/* active low; together with one of those: */
     79 
     80 #define TOCC_FIFO_PBHE	0x08	/* playback fifo is half empty (active high) */
     81 #define TOCC_FIFO_CPHF	0x04	/* capture fifo is half full (active high) */
     82 
     83 /* fifo status bits, write */
     84 
     85 /*
     86  * seems to work like this:
     87  * init: write 2; delay; write 1
     88  *
     89  * capture: write 1; write 1+4+8+0x40	(0x4D)
     90  * capt. int: read 512 bytes out of fifo.
     91  * capt. int off by writing 1+4+8	(0x0D)
     92  *
     93  * playback: write 1; write 1 + 0x10;	(0x11)
     94  * 3/4 fill fifo with silence; init codec;
     95  * write 1+4+0x10+0x80			(0x95)
     96  * pb int: write 512 bytes to fifo
     97  * pb int off by writing 1+4+0x10	(0x15)
     98  */
     99 
    100 #define TOCC_RST	0x02
    101 #define TOCC_ACT	0x01
    102 #define TOCC_MAGIC	0x04
    103 
    104 #define TOCC_PB_INTENA	0x80
    105 #define TOCC_PB_FILL	0x10
    106 
    107 #define TOCC_PB_PREP	(TOCC_ACT + TOCC_PB_FILL)
    108 #define TOCC_PB_TAIL	(TOCC_PB_PREP + TOCC_MAGIC)
    109 #define TOCC_PB_MAIN	(TOCC_PB_TAIL + TOCC_PB_INTENA)
    110 
    111 #define TOCC_CP_INTENA	0x40
    112 #define TOCC_CP_RUN	0x08
    113 
    114 #define TOCC_CP_TAIL	(TOCC_ACT + TOCC_CP_RUN)
    115 #define TOCC_CP_MAIN	(TOCC_CP_TAIL + TOCC_CP_INTENA + TOCC_MAGIC)
    116 
    117 /*
    118  * For the port stuff. Similar to the cs4231 table, but MONO is not wired
    119  * on the Toccata, which was designed for the AD1848. Also we know how
    120  * to handle input.
    121  */
    122 
    123 #define TOCCATA_INPUT_CLASS	0
    124 #define TOCCATA_OUTPUT_CLASS	1
    125 #define TOCCATA_MONITOR_CLASS	2
    126 #define TOCCATA_RECORD_CLASS	3
    127 
    128 #define TOCCATA_RECORD_SOURCE	4
    129 #define TOCCATA_REC_LVL		5
    130 
    131 #define TOCCATA_MIC_IN_LVL	6
    132 
    133 #define TOCCATA_AUX1_LVL	7
    134 #define TOCCATA_AUX1_MUTE	8
    135 
    136 #define TOCCATA_AUX2_LVL	9
    137 #define TOCCATA_AUX2_MUTE	10
    138 
    139 #define TOCCATA_MONITOR_LVL	11
    140 #define TOCCATA_MONITOR_MUTE	12
    141 #define TOCCATA_OUTPUT_LVL	13
    142 
    143 /* only on AD1845 in mode 2 */
    144 
    145 #define TOCCATA_LINE_IN_LVL	14
    146 #define TOCCATA_LINE_IN_MUTE	15
    147 
    148 /* special, need support */
    149 #define TOCCATA_MIC_LVL		16
    150 #define TOCCATA_MIC_MUTE	17
    151 
    152 
    153 
    154 /* prototypes */
    155 
    156 int toccata_intr(void *);
    157 int toccata_readreg(struct ad1848_softc *, int);
    158 void toccata_writereg(struct ad1848_softc *, int, int);
    159 
    160 int toccata_round_blocksize(void *, int, int, const audio_params_t *);
    161 size_t toccata_round_buffersize(void *, int, size_t);
    162 
    163 int toccata_open(void *, int);
    164 void toccata_close(void *);
    165 int toccata_getdev(void *, struct audio_device *);
    166 int toccata_get_props(void *);
    167 
    168 int toccata_halt_input(void *);
    169 int toccata_halt_output(void *);
    170 int toccata_start_input(void *, void *, int, void (*)(void *), void *);
    171 int toccata_start_output(void *, void *, int, void (*)(void *), void *);
    172 
    173 /* I suspect  those should be in a shared file */
    174 int toccata_set_port(void *, mixer_ctrl_t *);
    175 int toccata_get_port(void *, mixer_ctrl_t *);
    176 int toccata_query_devinfo(void *, mixer_devinfo_t *);
    177 
    178 const struct audio_hw_if audiocs_hw_if = {
    179 	toccata_open,
    180 	toccata_close,
    181 	0,	/*
    182 		 * XXX toccata_drain could be written:
    183 		 * sleep for play interrupt. This loses less then 512 bytes of
    184 		 * sample data, otherwise up to 1024.
    185 		 */
    186 	ad1848_query_encoding,
    187 	ad1848_set_params,
    188 	toccata_round_blocksize,
    189 	ad1848_commit_settings,
    190 	0,	/* init_output */	/* XXX need this to prefill? */
    191 	0,	/* init_input */
    192 	toccata_start_output,
    193 	toccata_start_input,
    194 	toccata_halt_output,
    195 	toccata_halt_input,
    196 	0,	/* speaker */
    197 	toccata_getdev,
    198 	0,	/* setfd */
    199 	toccata_set_port,
    200 	toccata_get_port,
    201 	toccata_query_devinfo,
    202 	0,	/* alloc/free */
    203 	0,
    204 	toccata_round_buffersize, /* round_buffer */
    205 	0,	/* mappage */
    206 	toccata_get_props,
    207 	0,	/* trigger_output */
    208 	0,
    209 };
    210 
    211 struct toccata_softc {
    212 	struct ad1848_softc	sc_ad;
    213 	struct isr		sc_isr;
    214 	volatile uint8_t	*sc_boardp; /* only need a few addresses! */
    215 
    216 	void			(*sc_captmore)(void *);
    217 	void			 *sc_captarg;
    218 	void			 *sc_captbuf;
    219 	int			sc_captbufsz;
    220 
    221 	void			(*sc_playmore)(void *);
    222 	void			 *sc_playarg;
    223 };
    224 
    225 int toccata_match(device_t, cfdata_t, void *);
    226 void toccata_attach(device_t, device_t, void *);
    227 
    228 CFATTACH_DECL_NEW(toccata, sizeof(struct toccata_softc),
    229     toccata_match, toccata_attach, NULL, NULL);
    230 
    231 int
    232 toccata_match(device_t parent, cfdata_t cfp, void *aux)
    233 {
    234 	struct zbus_args *zap;
    235 
    236 	zap = aux;
    237 
    238 	if (zap->manid != 18260)
    239 		return (0);
    240 
    241 	if (zap->prodid != 12)
    242 		return (0);
    243 
    244 	return (1);
    245 }
    246 
    247 void
    248 toccata_attach(device_t parent, device_t self, void *aux)
    249 {
    250 	struct toccata_softc *sc;
    251 	struct ad1848_softc *asc;
    252 	struct zbus_args *zap;
    253 	volatile uint8_t *boardp;
    254 
    255 	sc = device_private(self);
    256 	asc = &sc->sc_ad;
    257 	asc->sc_dev = self;
    258 	zap = aux;
    259 
    260 	boardp = (volatile uint8_t *)zap->va;
    261 	sc->sc_boardp = boardp;
    262 
    263 	*boardp = TOCC_RST;
    264 	delay(500000);		/* look up value */
    265 	*boardp = TOCC_ACT;
    266 
    267 	asc->parent = sc;
    268 	asc->sc_readreg = toccata_readreg;
    269 	asc->sc_writereg = toccata_writereg;
    270 
    271 	asc->chip_name = "ad1848";
    272 	asc->mode = 1;
    273 	ad1848_attach(asc);
    274 	printf("\n");
    275 
    276 	sc->sc_captbuf = 0;
    277 	sc->sc_playmore = 0;
    278 
    279 	sc->sc_isr.isr_ipl = 6;
    280 	sc->sc_isr.isr_arg = sc;
    281 	sc->sc_isr.isr_intr = toccata_intr;
    282 	add_isr(&sc->sc_isr);
    283 
    284 	audio_attach_mi(&audiocs_hw_if, sc, self);
    285 
    286 }
    287 
    288 /* interrupt handler */
    289 int
    290 toccata_intr(void *tag) {
    291 	struct toccata_softc *sc;
    292 	uint8_t *buf;
    293 	volatile uint8_t *fifo;
    294 	uint8_t status;
    295 	int i;
    296 
    297 	sc = tag;
    298 	status = *(sc->sc_boardp);
    299 
    300 	if (status & TOCC_FIFO_INT)	/* active low */
    301 		return 0;
    302 
    303 	if (status & TOCC_FIFO_PBHE) {
    304 		if (sc->sc_playmore) {
    305 			(*sc->sc_playmore)(sc->sc_playarg);
    306 			return 1;
    307 		}
    308 	} else if (status & TOCC_FIFO_CPHF) {
    309 		if (sc->sc_captbuf) {
    310 			buf = sc->sc_captbuf;
    311 			fifo = sc->sc_boardp + TOCC_FIFO_DATA;
    312 
    313 			for (i = sc->sc_captbufsz/4 - 1; i>=0; --i) {
    314 				*buf++ = *fifo;
    315 				*buf++ = *fifo;
    316 				*buf++ = *fifo;
    317 				*buf++ = *fifo;
    318 			}
    319 
    320 			/* XXX if (sc->sc_captmore) { */
    321 			(*sc->sc_captmore)(sc->sc_captarg);
    322 			return 1;
    323 		}
    324 	}
    325 
    326 	/*
    327 	 * Something is wrong; switch interrupts off to avoid wedging the
    328 	 * machine, and notify the alpha tester.
    329 	 * Normally, the halt_* functions should have switched off the
    330 	 * FIFO interrupt.
    331 	 */
    332 #ifdef DEBUG
    333 	printf("%s: got unexpected interrupt %x\n",
    334 	    device_xname(sc->sc_ad.sc_dev), status);
    335 #endif
    336 	*sc->sc_boardp = TOCC_ACT;
    337 	return 1;
    338 }
    339 
    340 /* support for ad1848 functions */
    341 
    342 int
    343 toccata_readreg(struct ad1848_softc *asc, int offset)
    344 {
    345 	struct toccata_softc *sc;
    346 
    347 	sc = (struct toccata_softc *)asc;
    348 	return *(sc->sc_boardp + TOCC_CODEC_ADDR +
    349 		offset * (TOCC_CODEC_REG - TOCC_CODEC_ADDR));
    350 }
    351 
    352 void
    353 toccata_writereg(struct ad1848_softc *asc, int offset, int value)
    354 {
    355 	struct toccata_softc *sc;
    356 
    357 	sc = (struct toccata_softc *)asc;
    358 	*(sc->sc_boardp + TOCC_CODEC_ADDR +
    359 		offset * (TOCC_CODEC_REG - TOCC_CODEC_ADDR)) = value;
    360 }
    361 
    362 /* our own copy of open/close; we don't ever enable the ad1848 interrupts */
    363 int
    364 toccata_open(void *addr, int flags)
    365 {
    366 	struct toccata_softc *sc;
    367 	struct ad1848_softc *asc;
    368 
    369 	sc = addr;
    370 	asc = &sc->sc_ad;
    371 
    372 	asc->open_mode = flags;
    373 	/* If recording && monitoring, the playback part is also used. */
    374 	if (flags & FREAD && asc->mute[AD1848_MONITOR_CHANNEL] == 0)
    375 		ad1848_mute_wave_output(asc, WAVE_UNMUTE1, 1);
    376 
    377 #ifdef AUDIO_DEBUG
    378 	if (ad1848debug)
    379 		ad1848_dump_regs(asc);
    380 #endif
    381 
    382 	return 0;
    383 }
    384 
    385 void
    386 toccata_close(void *addr)
    387 {
    388 	struct toccata_softc *sc;
    389 	struct ad1848_softc *asc;
    390 	unsigned reg;
    391 
    392 	sc = addr;
    393 	asc = &sc->sc_ad;
    394 	asc->open_mode = 0;
    395 
    396 	ad1848_mute_wave_output(asc, WAVE_UNMUTE1, 0);
    397 
    398 	reg = ad_read(&sc->sc_ad, SP_INTERFACE_CONFIG);
    399 	ad_write(&sc->sc_ad, SP_INTERFACE_CONFIG,
    400 		(reg & ~(CAPTURE_ENABLE|PLAYBACK_ENABLE)));
    401 
    402 	/* Disable interrupts */
    403 	*sc->sc_boardp = TOCC_ACT;
    404 #ifdef AUDIO_DEBUG
    405 	if (ad1848debug)
    406 		ad1848_dump_regs(asc);
    407 #endif
    408 }
    409 
    410 int
    411 toccata_round_blocksize(void *addr, int blk,
    412 			int mode, const audio_params_t *param)
    413 {
    414 	int ret;
    415 
    416 	ret = blk > 512 ? 512 : (blk & -4);
    417 
    418 	return ret;
    419 }
    420 
    421 size_t
    422 toccata_round_buffersize(void *addr, int direction, size_t suggested)
    423 {
    424 
    425 	return suggested & -4;
    426 }
    427 
    428 struct audio_device toccata_device = {
    429 	"toccata", "x", "audio"
    430 };
    431 
    432 int
    433 toccata_getdev(void *addr, struct audio_device *retp)
    434 {
    435 
    436 	*retp = toccata_device;
    437 	return 0;
    438 }
    439 
    440 int
    441 toccata_get_props(void *addr)
    442 {
    443 	return 0;
    444 }
    445 
    446 int
    447 toccata_halt_input(void *addr)
    448 {
    449 	struct toccata_softc *sc;
    450 	struct ad1848_softc *asc;
    451 	unsigned reg;
    452 
    453 	sc = addr;
    454 	asc = &sc->sc_ad;
    455 
    456 	/* we're half_duplex; be brutal */
    457 	*sc->sc_boardp = TOCC_CP_TAIL;
    458 	sc->sc_captmore = 0;
    459 	sc->sc_captbuf = 0;
    460 
    461 	reg = ad_read(&sc->sc_ad, SP_INTERFACE_CONFIG);
    462 	ad_write(&sc->sc_ad, SP_INTERFACE_CONFIG, (reg & ~CAPTURE_ENABLE));
    463 
    464 	return 0;
    465 }
    466 
    467 int
    468 toccata_start_input(void *addr, void *block, int blksize,
    469 	void (*intr)(void *), void *intrarg)
    470 {
    471 	struct toccata_softc *sc;
    472 	unsigned int reg;
    473 	volatile uint8_t *cmd;
    474 
    475 	sc = addr;
    476 	cmd = sc->sc_boardp;
    477 
    478 	if (sc->sc_captmore == 0) {
    479 
    480 		/* we're half-duplex, be brutal */
    481 		*cmd = TOCC_ACT;
    482 		*cmd = TOCC_CP_MAIN;
    483 
    484 		reg = ad_read(&sc->sc_ad, SP_INTERFACE_CONFIG);
    485 		ad_write(&sc->sc_ad, SP_INTERFACE_CONFIG,
    486 		    (reg | CAPTURE_ENABLE));
    487 
    488 	}
    489 
    490 	sc->sc_captarg = intrarg;
    491 	sc->sc_captmore = intr;
    492 	sc->sc_captbuf = (uint8_t *)block;
    493 	sc->sc_captbufsz = blksize;
    494 
    495 	return 0;
    496 }
    497 
    498 int
    499 toccata_halt_output(void *addr)
    500 {
    501 	struct toccata_softc *sc;
    502 	struct ad1848_softc *asc;
    503 	unsigned int reg;
    504 
    505 	sc = addr;
    506 	asc = &sc->sc_ad;
    507 
    508 	/* we're half_duplex; be brutal */
    509 	*sc->sc_boardp = TOCC_PB_TAIL;
    510 	sc->sc_playmore = 0;
    511 
    512 	reg = ad_read(&sc->sc_ad, SP_INTERFACE_CONFIG);
    513 	ad_write(&sc->sc_ad, SP_INTERFACE_CONFIG, (reg & ~PLAYBACK_ENABLE));
    514 
    515 	return 0;
    516 }
    517 
    518 int
    519 toccata_start_output(void *addr, void *block, int blksize,
    520 	void (*intr)(void*), void *intrarg)
    521 {
    522 	struct toccata_softc *sc;
    523 	unsigned reg;
    524 	int i;
    525 	volatile uint8_t *cmd, *fifo;
    526 	uint8_t *buf;
    527 
    528 	sc = addr;
    529 	buf = block;
    530 
    531 	cmd = sc->sc_boardp;
    532 	fifo = sc->sc_boardp + TOCC_FIFO_DATA;
    533 
    534 	if (sc->sc_playmore == 0) {
    535 		*cmd = TOCC_ACT;
    536 		*cmd = TOCC_PB_PREP;
    537 	}
    538 
    539 	/*
    540 	 * We rounded the blocksize to a multiple of 4 bytes. Modest
    541 	 * unrolling saves 2% of cputime playing 48000 16bit stereo
    542 	 * on 68040/25MHz.
    543 	 */
    544 
    545 	for (i = blksize/4 - 1; i>=0; --i) {
    546 		*fifo = *buf++;
    547 		*fifo = *buf++;
    548 		*fifo = *buf++;
    549 		*fifo = *buf++;
    550 	}
    551 
    552 	if (sc->sc_playmore == 0) {
    553 		reg = ad_read(&sc->sc_ad, SP_INTERFACE_CONFIG);
    554 		ad_write(&sc->sc_ad, SP_INTERFACE_CONFIG,
    555 		    (reg | PLAYBACK_ENABLE));
    556 
    557 		/* we're half-duplex, be brutal */
    558 		*sc->sc_boardp = TOCC_PB_MAIN;
    559 	}
    560 
    561 	sc->sc_playarg = intrarg;
    562 	sc->sc_playmore = intr;
    563 
    564 	return 0;
    565 }
    566 
    567 static ad1848_devmap_t csmapping[] = {
    568 	{ TOCCATA_MIC_IN_LVL, AD1848_KIND_MICGAIN, -1 },
    569 	{ TOCCATA_AUX1_LVL, AD1848_KIND_LVL, AD1848_AUX1_CHANNEL },
    570 	{ TOCCATA_AUX1_MUTE, AD1848_KIND_MUTE, AD1848_AUX1_CHANNEL },
    571 	{ TOCCATA_AUX2_LVL, AD1848_KIND_LVL, AD1848_AUX2_CHANNEL },
    572 	{ TOCCATA_AUX2_MUTE, AD1848_KIND_MUTE, AD1848_AUX2_CHANNEL },
    573 	{ TOCCATA_OUTPUT_LVL, AD1848_KIND_LVL, AD1848_DAC_CHANNEL },
    574 	{ TOCCATA_MONITOR_LVL, AD1848_KIND_LVL, AD1848_MONITOR_CHANNEL },
    575 	{ TOCCATA_MONITOR_MUTE, AD1848_KIND_MUTE, AD1848_MONITOR_CHANNEL },
    576 	{ TOCCATA_REC_LVL, AD1848_KIND_RECORDGAIN, -1 },
    577 	{ TOCCATA_RECORD_SOURCE, AD1848_KIND_RECORDSOURCE, -1 },
    578 /* only in mode 2: */
    579 	{ TOCCATA_LINE_IN_LVL, AD1848_KIND_LVL, AD1848_LINE_CHANNEL },
    580 	{ TOCCATA_LINE_IN_MUTE, AD1848_KIND_MUTE, AD1848_LINE_CHANNEL },
    581 };
    582 
    583 #define nummap (sizeof(csmapping) / sizeof(csmapping[0]))
    584 
    585 int
    586 toccata_set_port(void *addr, mixer_ctrl_t *cp)
    587 {
    588 	struct ad1848_softc *ac;
    589 
    590 	/* printf("set_port(%d)\n", cp->dev); */
    591 	ac = addr;
    592 	return ad1848_mixer_set_port(ac, csmapping,
    593 		ac->mode == 2 ? nummap : nummap - 2, cp);
    594 }
    595 
    596 int
    597 toccata_get_port(void *addr, mixer_ctrl_t *cp)
    598 {
    599 	struct ad1848_softc *ac;
    600 
    601 	/* printf("get_port(%d)\n", cp->dev); */
    602 	ac = addr;
    603 	return ad1848_mixer_get_port(ac, csmapping,
    604 		ac->mode == 2 ? nummap : nummap - 2, cp);
    605 }
    606 
    607 int
    608 toccata_query_devinfo(void *addr, mixer_devinfo_t *dip)
    609 {
    610 
    611 	switch(dip->index) {
    612 	case TOCCATA_MIC_IN_LVL:	/* Microphone */
    613 		dip->type = AUDIO_MIXER_VALUE;
    614 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    615 		dip->prev = dip->next = AUDIO_MIXER_LAST;
    616 		strcpy(dip->label.name, AudioNmicrophone);
    617 		dip->un.v.num_channels = 1;
    618 		strcpy(dip->un.v.units.name, AudioNvolume);
    619 		break;
    620 #if 0
    621 
    622 	case TOCCATA_MONO_LVL:	/* mono/microphone mixer */
    623 		dip->type = AUDIO_MIXER_VALUE;
    624 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    625 		dip->prev = AUDIO_MIXER_LAST;
    626 		dip->next = TOCCATA_MONO_MUTE;
    627 		strcpy(dip->label.name, AudioNmicrophone);
    628 		dip->un.v.num_channels = 1;
    629 		strcpy(dip->un.v.units.name, AudioNvolume);
    630 		break;
    631 #endif
    632 
    633 	case TOCCATA_AUX1_LVL:		/*  dacout */
    634 		dip->type = AUDIO_MIXER_VALUE;
    635 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    636 		dip->prev = AUDIO_MIXER_LAST;
    637 		dip->next = TOCCATA_AUX1_MUTE;
    638 		strcpy(dip->label.name, "aux1");
    639 		dip->un.v.num_channels = 2;
    640 		strcpy(dip->un.v.units.name, AudioNvolume);
    641 		break;
    642 
    643 	case TOCCATA_AUX1_MUTE:
    644 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    645 		dip->type = AUDIO_MIXER_ENUM;
    646 		dip->prev = TOCCATA_AUX1_LVL;
    647 		dip->next = AUDIO_MIXER_LAST;
    648 		goto mute;
    649 
    650 
    651 
    652 	case TOCCATA_AUX2_LVL:
    653 		dip->type = AUDIO_MIXER_VALUE;
    654 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    655 		dip->prev = AUDIO_MIXER_LAST;
    656 		dip->next = TOCCATA_AUX2_MUTE;
    657 		strcpy(dip->label.name, "aux2");
    658 		dip->un.v.num_channels = 2;
    659 		strcpy(dip->un.v.units.name, AudioNvolume);
    660 		break;
    661 
    662 	case TOCCATA_AUX2_MUTE:
    663 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    664 		dip->type = AUDIO_MIXER_ENUM;
    665 		dip->prev = TOCCATA_AUX2_LVL;
    666 		dip->next = AUDIO_MIXER_LAST;
    667 		goto mute;
    668 
    669 
    670 	case TOCCATA_MONITOR_LVL:	/* monitor level */
    671 		dip->type = AUDIO_MIXER_VALUE;
    672 		dip->mixer_class = TOCCATA_MONITOR_CLASS;
    673 		dip->next = TOCCATA_MONITOR_MUTE;
    674 		dip->prev = AUDIO_MIXER_LAST;
    675 		strcpy(dip->label.name, AudioNmonitor);
    676 		dip->un.v.num_channels = 1;
    677 		strcpy(dip->un.v.units.name, AudioNvolume);
    678 		break;
    679 
    680 	case TOCCATA_OUTPUT_LVL:	/* output volume */
    681 		dip->type = AUDIO_MIXER_VALUE;
    682 		dip->mixer_class = TOCCATA_OUTPUT_CLASS;
    683 		dip->prev = dip->next = AUDIO_MIXER_LAST;
    684 		strcpy(dip->label.name, AudioNmaster);
    685 		dip->un.v.num_channels = 2;
    686 		strcpy(dip->un.v.units.name, AudioNvolume);
    687 		break;
    688 #if 0
    689 	case TOCCATA_LINE_IN_LVL:	/* line */
    690 		dip->type = AUDIO_MIXER_VALUE;
    691 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    692 		dip->prev = AUDIO_MIXER_LAST;
    693 		dip->next = TOCCATA_LINE_IN_MUTE;
    694 		strcpy(dip->label.name, AudioNline);
    695 		dip->un.v.num_channels = 2;
    696 		strcpy(dip->un.v.units.name, AudioNvolume);
    697 		break;
    698 
    699 	case TOCCATA_LINE_IN_MUTE:
    700 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    701 		dip->type = AUDIO_MIXER_ENUM;
    702 		dip->prev = TOCCATA_LINE_IN_LVL;
    703 		dip->next = AUDIO_MIXER_LAST;
    704 		goto mute;
    705 #endif
    706 	case TOCCATA_MONITOR_MUTE:
    707 		dip->mixer_class = TOCCATA_MONITOR_CLASS;
    708 		dip->type = AUDIO_MIXER_ENUM;
    709 		dip->prev = TOCCATA_MONITOR_LVL;
    710 		dip->next = AUDIO_MIXER_LAST;
    711 	mute:
    712 		strcpy(dip->label.name, AudioNmute);
    713 		dip->un.e.num_mem = 2;
    714 		strcpy(dip->un.e.member[0].label.name, AudioNoff);
    715 		dip->un.e.member[0].ord = 0;
    716 		strcpy(dip->un.e.member[1].label.name, AudioNon);
    717 		dip->un.e.member[1].ord = 1;
    718 		break;
    719 
    720 	case TOCCATA_REC_LVL:	/* record level */
    721 		dip->type = AUDIO_MIXER_VALUE;
    722 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    723 		dip->prev = AUDIO_MIXER_LAST;
    724 		dip->next = TOCCATA_RECORD_SOURCE;
    725 		strcpy(dip->label.name, AudioNrecord);
    726 		dip->un.v.num_channels = 2;
    727 		strcpy(dip->un.v.units.name, AudioNvolume);
    728 		break;
    729 
    730 	case TOCCATA_RECORD_SOURCE:
    731 		dip->mixer_class = TOCCATA_RECORD_CLASS;
    732 		dip->type = AUDIO_MIXER_ENUM;
    733 		dip->prev = TOCCATA_REC_LVL;
    734 		dip->next = AUDIO_MIXER_LAST;
    735 		strcpy(dip->label.name, AudioNsource);
    736 		dip->un.e.num_mem = 4;
    737 		strcpy(dip->un.e.member[0].label.name, AudioNmicrophone);
    738 		dip->un.e.member[1].ord = MIC_IN_PORT;
    739 		strcpy(dip->un.e.member[1].label.name, AudioNline);
    740 		dip->un.e.member[3].ord = LINE_IN_PORT;
    741 		strcpy(dip->un.e.member[2].label.name, "aux1");
    742 		dip->un.e.member[2].ord = AUX1_IN_PORT;
    743 		strcpy(dip->un.e.member[3].label.name, AudioNoutput);
    744 		dip->un.e.member[0].ord = DAC_IN_PORT;
    745 		break;
    746 
    747 	case TOCCATA_INPUT_CLASS:		/* input class descriptor */
    748 		dip->type = AUDIO_MIXER_CLASS;
    749 		dip->mixer_class = TOCCATA_INPUT_CLASS;
    750 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    751 		strcpy(dip->label.name, AudioCinputs);
    752 		break;
    753 
    754 	case TOCCATA_OUTPUT_CLASS:		/* output class descriptor */
    755 		dip->type = AUDIO_MIXER_CLASS;
    756 		dip->mixer_class = TOCCATA_OUTPUT_CLASS;
    757 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    758 		strcpy(dip->label.name, AudioCoutputs);
    759 		break;
    760 
    761 	case TOCCATA_MONITOR_CLASS:		/* monitor class descriptor */
    762 		dip->type = AUDIO_MIXER_CLASS;
    763 		dip->mixer_class = TOCCATA_MONITOR_CLASS;
    764 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    765 		strcpy(dip->label.name, AudioCmonitor);
    766 		break;
    767 
    768 	case TOCCATA_RECORD_CLASS:		/* record source class */
    769 		dip->type = AUDIO_MIXER_CLASS;
    770 		dip->mixer_class = TOCCATA_RECORD_CLASS;
    771 		dip->next = dip->prev = AUDIO_MIXER_LAST;
    772 		strcpy(dip->label.name, AudioCrecord);
    773 		break;
    774 
    775 	default:
    776 		return ENXIO;
    777 		/*NOTREACHED*/
    778 	}
    779 
    780 	return 0;
    781 }
    782