bebob_maudio.c 21.1 KB
Newer Older
1 2 3 4 5 6 7 8 9
/*
 * bebob_maudio.c - a part of driver for BeBoB based devices
 *
 * Copyright (c) 2013-2014 Takashi Sakamoto
 *
 * Licensed under the terms of the GNU General Public License, version 2.
 */

#include "./bebob.h"
10
#include <sound/control.h>
11 12

/*
13
 * Just powering on, Firewire 410/Audiophile/1814 and ProjectMix I/O wait to
14 15 16 17 18
 * download firmware blob. To enable these devices, drivers should upload
 * firmware blob and send a command to initialize configuration to factory
 * settings when completing uploading. Then these devices generate bus reset
 * and are recognized as new devices with the firmware.
 *
19 20 21 22
 * But with firmware version 5058 or later, the firmware is stored to flash
 * memory in the device and drivers can tell bootloader to load the firmware
 * by sending a cue. This cue must be sent one time.
 *
23 24 25 26 27 28 29
 * For streaming, both of output and input streams are needed for Firewire 410
 * and Ozonic. The single stream is OK for the other devices even if the clock
 * source is not SYT-Match (I note no devices use SYT-Match).
 *
 * Without streaming, the devices except for Firewire Audiophile can mix any
 * input and output. For this reason, Audiophile cannot be used as standalone
 * mixer.
30 31 32 33 34 35
 *
 * Firewire 1814 and ProjectMix I/O uses special firmware. It will be freezed
 * when receiving any commands which the firmware can't understand. These
 * devices utilize completely different system to control. It is some
 * write-transaction directly into a certain address. All of addresses for mixer
 * functionality is between 0xffc700700000 to 0xffc70070009c.
36 37
 */

38 39 40 41 42 43 44 45 46 47 48 49 50 51
/* Offset from information register */
#define INFO_OFFSET_SW_DATE	0x20

/* Bootloader Protocol Version 1 */
#define MAUDIO_BOOTLOADER_CUE1	0x00000001
/*
 * Initializing configuration to factory settings (= 0x1101), (swapped in line),
 * Command code is zero (= 0x00),
 * the number of operands is zero (= 0x00)(at least significant byte)
 */
#define MAUDIO_BOOTLOADER_CUE2	0x01110000
/* padding */
#define MAUDIO_BOOTLOADER_CUE3	0x00000000

52
#define MAUDIO_SPECIFIC_ADDRESS	0xffc700000000ULL
53 54 55 56

#define METER_OFFSET		0x00600000

/* some device has sync info after metering data */
57
#define METER_SIZE_SPECIAL	84	/* with sync info */
58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78
#define METER_SIZE_FW410	76	/* with sync info */
#define METER_SIZE_AUDIOPHILE	60	/* with sync info */
#define METER_SIZE_SOLO		52	/* with sync info */
#define METER_SIZE_OZONIC	48
#define METER_SIZE_NRV10	80

/* labels for metering */
#define ANA_IN		"Analog In"
#define ANA_OUT		"Analog Out"
#define DIG_IN		"Digital In"
#define SPDIF_IN	"S/PDIF In"
#define ADAT_IN		"ADAT In"
#define DIG_OUT		"Digital Out"
#define SPDIF_OUT	"S/PDIF Out"
#define ADAT_OUT	"ADAT Out"
#define STRM_IN		"Stream In"
#define AUX_OUT		"Aux Out"
#define HP_OUT		"HP Out"
/* for NRV */
#define UNKNOWN_METER	"Unknown"

79 80 81 82 83 84 85 86 87
struct special_params {
	bool is1814;
	unsigned int clk_src;
	unsigned int dig_in_fmt;
	unsigned int dig_out_fmt;
	unsigned int clk_lock;
	struct snd_ctl_elem_id *ctl_id_sync;
};

88 89 90 91 92 93 94 95 96 97 98
/*
 * For some M-Audio devices, this module just send cue to load firmware. After
 * loading, the device generates bus reset and newly detected.
 *
 * If we make any transactions to load firmware, the operation may failed.
 */
int snd_bebob_maudio_load_firmware(struct fw_unit *unit)
{
	struct fw_device *device = fw_parent_device(unit);
	int err, rcode;
	u64 date;
99 100 101 102
	__le32 cues[3] = {
		cpu_to_le32(MAUDIO_BOOTLOADER_CUE1),
		cpu_to_le32(MAUDIO_BOOTLOADER_CUE2),
		cpu_to_le32(MAUDIO_BOOTLOADER_CUE3)
103 104 105 106 107 108 109 110 111 112 113
	};

	/* check date of software used to build */
	err = snd_bebob_read_block(unit, INFO_OFFSET_SW_DATE,
				   &date, sizeof(u64));
	if (err < 0)
		goto end;
	/*
	 * firmware version 5058 or later has date later than "20070401", but
	 * 'date' is not null-terminated.
	 */
114
	if (date < 0x3230303730343031LL) {
115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133
		dev_err(&unit->device,
			"Use firmware version 5058 or later\n");
		err = -ENOSYS;
		goto end;
	}

	rcode = fw_run_transaction(device->card, TCODE_WRITE_BLOCK_REQUEST,
				   device->node_id, device->generation,
				   device->max_speed, BEBOB_ADDR_REG_REQ,
				   cues, sizeof(cues));
	if (rcode != RCODE_COMPLETE) {
		dev_err(&unit->device,
			"Failed to send a cue to load firmware\n");
		err = -EIO;
	}
end:
	return err;
}

134 135 136 137 138 139 140 141
static inline int
get_meter(struct snd_bebob *bebob, void *buf, unsigned int size)
{
	return snd_fw_transaction(bebob->unit, TCODE_READ_BLOCK_REQUEST,
				  MAUDIO_SPECIFIC_ADDRESS + METER_OFFSET,
				  buf, size, 0);
}

142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342
static int
check_clk_sync(struct snd_bebob *bebob, unsigned int size, bool *sync)
{
	int err;
	u8 *buf;

	buf = kmalloc(size, GFP_KERNEL);
	if (buf == NULL)
		return -ENOMEM;

	err = get_meter(bebob, buf, size);
	if (err < 0)
		goto end;

	/* if synced, this value is the same as SFC of FDF in CIP header */
	*sync = (buf[size - 2] != 0xff);
end:
	kfree(buf);
	return err;
}

/*
 * dig_fmt: 0x00:S/PDIF, 0x01:ADAT
 * clk_lock: 0x00:unlock, 0x01:lock
 */
static int
avc_maudio_set_special_clk(struct snd_bebob *bebob, unsigned int clk_src,
			   unsigned int dig_in_fmt, unsigned int dig_out_fmt,
			   unsigned int clk_lock)
{
	struct special_params *params = bebob->maudio_special_quirk;
	int err;
	u8 *buf;

	if (amdtp_stream_running(&bebob->rx_stream) ||
	    amdtp_stream_running(&bebob->tx_stream))
		return -EBUSY;

	buf = kmalloc(12, GFP_KERNEL);
	if (buf == NULL)
		return -ENOMEM;

	buf[0]  = 0x00;		/* CONTROL */
	buf[1]  = 0xff;		/* UNIT */
	buf[2]  = 0x00;		/* vendor dependent */
	buf[3]  = 0x04;		/* company ID high */
	buf[4]  = 0x00;		/* company ID middle */
	buf[5]  = 0x04;		/* company ID low */
	buf[6]  = 0xff & clk_src;	/* clock source */
	buf[7]  = 0xff & dig_in_fmt;	/* input digital format */
	buf[8]  = 0xff & dig_out_fmt;	/* output digital format */
	buf[9]  = 0xff & clk_lock;	/* lock these settings */
	buf[10] = 0x00;		/* padding  */
	buf[11] = 0x00;		/* padding */

	err = fcp_avc_transaction(bebob->unit, buf, 12, buf, 12,
				  BIT(1) | BIT(2) | BIT(3) | BIT(4) |
				  BIT(5) | BIT(6) | BIT(7) | BIT(8) |
				  BIT(9));
	if ((err > 0) && (err < 10))
		err = -EIO;
	else if (buf[0] == 0x08) /* NOT IMPLEMENTED */
		err = -ENOSYS;
	else if (buf[0] == 0x0a) /* REJECTED */
		err = -EINVAL;
	if (err < 0)
		goto end;

	params->clk_src		= buf[6];
	params->dig_in_fmt	= buf[7];
	params->dig_out_fmt	= buf[8];
	params->clk_lock	= buf[9];

	if (params->ctl_id_sync)
		snd_ctl_notify(bebob->card, SNDRV_CTL_EVENT_MASK_VALUE,
			       params->ctl_id_sync);

	err = 0;
end:
	kfree(buf);
	return err;
}
static void
special_stream_formation_set(struct snd_bebob *bebob)
{
	static const unsigned int ch_table[2][2][3] = {
		/* AMDTP_OUT_STREAM */
		{ {  6,  6,  4 },	/* SPDIF */
		  { 12,  8,  4 } },	/* ADAT */
		/* AMDTP_IN_STREAM */
		{ { 10, 10,  2 },	/* SPDIF */
		  { 16, 12,  2 } }	/* ADAT */
	};
	struct special_params *params = bebob->maudio_special_quirk;
	unsigned int i, max;

	max = SND_BEBOB_STRM_FMT_ENTRIES - 1;
	if (!params->is1814)
		max -= 2;

	for (i = 0; i < max; i++) {
		bebob->tx_stream_formations[i + 1].pcm =
			ch_table[AMDTP_IN_STREAM][params->dig_in_fmt][i / 2];
		bebob->tx_stream_formations[i + 1].midi = 1;

		bebob->rx_stream_formations[i + 1].pcm =
			ch_table[AMDTP_OUT_STREAM][params->dig_out_fmt][i / 2];
		bebob->rx_stream_formations[i + 1].midi = 1;
	}
}

static int add_special_controls(struct snd_bebob *bebob);
int
snd_bebob_maudio_special_discover(struct snd_bebob *bebob, bool is1814)
{
	struct special_params *params;
	int err;

	params = kzalloc(sizeof(struct special_params), GFP_KERNEL);
	if (params == NULL)
		return -ENOMEM;

	mutex_lock(&bebob->mutex);

	bebob->maudio_special_quirk = (void *)params;
	params->is1814 = is1814;

	/* initialize these parameters because driver is not allowed to ask */
	bebob->rx_stream.context = ERR_PTR(-1);
	bebob->tx_stream.context = ERR_PTR(-1);
	err = avc_maudio_set_special_clk(bebob, 0x03, 0x00, 0x00, 0x00);
	if (err < 0) {
		dev_err(&bebob->unit->device,
			"fail to initialize clock params: %d\n", err);
		goto end;
	}

	err = add_special_controls(bebob);
	if (err < 0)
		goto end;

	special_stream_formation_set(bebob);

	if (params->is1814) {
		bebob->midi_input_ports = 1;
		bebob->midi_output_ports = 1;
	} else {
		bebob->midi_input_ports = 2;
		bebob->midi_output_ports = 2;
	}
end:
	if (err < 0) {
		kfree(params);
		bebob->maudio_special_quirk = NULL;
	}
	mutex_unlock(&bebob->mutex);
	return err;
}

/* Input plug shows actual rate. Output plug is needless for this purpose. */
static int special_get_rate(struct snd_bebob *bebob, unsigned int *rate)
{
	int err, trials;

	trials = 0;
	do {
		err = avc_general_get_sig_fmt(bebob->unit, rate,
					      AVC_GENERAL_PLUG_DIR_IN, 0);
	} while (err == -EAGAIN && ++trials < 3);

	return err;
}
static int special_set_rate(struct snd_bebob *bebob, unsigned int rate)
{
	struct special_params *params = bebob->maudio_special_quirk;
	int err;

	err = avc_general_set_sig_fmt(bebob->unit, rate,
				      AVC_GENERAL_PLUG_DIR_OUT, 0);
	if (err < 0)
		goto end;

	/*
	 * Just after changing sampling rate for output, a followed command
	 * for input is easy to fail. This is a workaround fot this issue.
	 */
	msleep(100);

	err = avc_general_set_sig_fmt(bebob->unit, rate,
				      AVC_GENERAL_PLUG_DIR_IN, 0);
	if (err < 0)
		goto end;

	if (params->ctl_id_sync)
		snd_ctl_notify(bebob->card, SNDRV_CTL_EVENT_MASK_VALUE,
			       params->ctl_id_sync);
end:
	return err;
}

/* Clock source control for special firmware */
343 344 345 346 347 348
static enum snd_bebob_clock_type special_clk_types[] = {
	SND_BEBOB_CLOCK_TYPE_INTERNAL,	/* With digital mute */
	SND_BEBOB_CLOCK_TYPE_EXTERNAL,	/* SPDIF/ADAT */
	SND_BEBOB_CLOCK_TYPE_EXTERNAL,	/* Word Clock */
	SND_BEBOB_CLOCK_TYPE_INTERNAL,
};
349 350 351 352 353 354 355 356 357
static int special_clk_get(struct snd_bebob *bebob, unsigned int *id)
{
	struct special_params *params = bebob->maudio_special_quirk;
	*id = params->clk_src;
	return 0;
}
static int special_clk_ctl_info(struct snd_kcontrol *kctl,
				struct snd_ctl_elem_info *einf)
{
358 359 360 361 362 363
	static const char *const special_clk_labels[] = {
		"Internal with Digital Mute",
		"Digital",
		"Word Clock",
		"Internal"
	};
364
	return snd_ctl_enum_info(einf, 1, ARRAY_SIZE(special_clk_types),
365
				 special_clk_labels);
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382
}
static int special_clk_ctl_get(struct snd_kcontrol *kctl,
			       struct snd_ctl_elem_value *uval)
{
	struct snd_bebob *bebob = snd_kcontrol_chip(kctl);
	struct special_params *params = bebob->maudio_special_quirk;
	uval->value.enumerated.item[0] = params->clk_src;
	return 0;
}
static int special_clk_ctl_put(struct snd_kcontrol *kctl,
			       struct snd_ctl_elem_value *uval)
{
	struct snd_bebob *bebob = snd_kcontrol_chip(kctl);
	struct special_params *params = bebob->maudio_special_quirk;
	int err, id;

	id = uval->value.enumerated.item[0];
383
	if (id >= ARRAY_SIZE(special_clk_types))
384
		return -EINVAL;
385

386 387
	mutex_lock(&bebob->mutex);

388 389 390 391 392 393
	err = avc_maudio_set_special_clk(bebob, id,
					 params->dig_in_fmt,
					 params->dig_out_fmt,
					 params->clk_lock);
	mutex_unlock(&bebob->mutex);

394 395 396 397
	if (err >= 0)
		err = 1;

	return err;
398
}
399
static const struct snd_kcontrol_new special_clk_ctl = {
400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431
	.name	= "Clock Source",
	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
	.access	= SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info	= special_clk_ctl_info,
	.get	= special_clk_ctl_get,
	.put	= special_clk_ctl_put
};

/* Clock synchronization control for special firmware */
static int special_sync_ctl_info(struct snd_kcontrol *kctl,
				 struct snd_ctl_elem_info *einf)
{
	einf->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	einf->count = 1;
	einf->value.integer.min = 0;
	einf->value.integer.max = 1;

	return 0;
}
static int special_sync_ctl_get(struct snd_kcontrol *kctl,
				struct snd_ctl_elem_value *uval)
{
	struct snd_bebob *bebob = snd_kcontrol_chip(kctl);
	int err;
	bool synced = 0;

	err = check_clk_sync(bebob, METER_SIZE_SPECIAL, &synced);
	if (err >= 0)
		uval->value.integer.value[0] = synced;

	return 0;
}
432
static const struct snd_kcontrol_new special_sync_ctl = {
433 434 435 436 437 438 439
	.name	= "Sync Status",
	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
	.access	= SNDRV_CTL_ELEM_ACCESS_READ,
	.info	= special_sync_ctl_info,
	.get	= special_sync_ctl_get,
};

440
/* Digital input interface control for special firmware */
441
static const char *const special_dig_in_iface_labels[] = {
442 443 444 445 446
	"S/PDIF Optical", "S/PDIF Coaxial", "ADAT Optical"
};
static int special_dig_in_iface_ctl_info(struct snd_kcontrol *kctl,
					 struct snd_ctl_elem_info *einf)
{
447 448 449
	return snd_ctl_enum_info(einf, 1,
				 ARRAY_SIZE(special_dig_in_iface_labels),
				 special_dig_in_iface_labels);
450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
}
static int special_dig_in_iface_ctl_get(struct snd_kcontrol *kctl,
					struct snd_ctl_elem_value *uval)
{
	struct snd_bebob *bebob = snd_kcontrol_chip(kctl);
	struct special_params *params = bebob->maudio_special_quirk;
	unsigned int dig_in_iface;
	int err, val;

	mutex_lock(&bebob->mutex);

	err = avc_audio_get_selector(bebob->unit, 0x00, 0x04,
				     &dig_in_iface);
	if (err < 0) {
		dev_err(&bebob->unit->device,
			"fail to get digital input interface: %d\n", err);
		goto end;
	}

	/* encoded id for user value */
	val = (params->dig_in_fmt << 1) | (dig_in_iface & 0x01);

	/* for ADAT Optical */
	if (val > 2)
		val = 2;

	uval->value.enumerated.item[0] = val;
end:
	mutex_unlock(&bebob->mutex);
	return err;
}
static int special_dig_in_iface_ctl_set(struct snd_kcontrol *kctl,
					struct snd_ctl_elem_value *uval)
{
	struct snd_bebob *bebob = snd_kcontrol_chip(kctl);
	struct special_params *params = bebob->maudio_special_quirk;
	unsigned int id, dig_in_fmt, dig_in_iface;
	int err;

	id = uval->value.enumerated.item[0];
490 491
	if (id >= ARRAY_SIZE(special_dig_in_iface_labels))
		return -EINVAL;
492 493 494 495 496

	/* decode user value */
	dig_in_fmt = (id >> 1) & 0x01;
	dig_in_iface = id & 0x01;

497 498
	mutex_lock(&bebob->mutex);

499 500 501 502 503
	err = avc_maudio_set_special_clk(bebob,
					 params->clk_src,
					 dig_in_fmt,
					 params->dig_out_fmt,
					 params->clk_lock);
504 505 506 507
	if (err < 0)
		goto end;

	/* For ADAT, optical interface is only available. */
508 509
	if (params->dig_in_fmt > 0) {
		err = 1;
510
		goto end;
511
	}
512

513
	/* For S/PDIF, optical/coaxial interfaces are selectable. */
514 515 516 517
	err = avc_audio_set_selector(bebob->unit, 0x00, 0x04, dig_in_iface);
	if (err < 0)
		dev_err(&bebob->unit->device,
			"fail to set digital input interface: %d\n", err);
518
	err = 1;
519 520 521 522 523
end:
	special_stream_formation_set(bebob);
	mutex_unlock(&bebob->mutex);
	return err;
}
524
static const struct snd_kcontrol_new special_dig_in_iface_ctl = {
525 526 527 528 529 530 531 532
	.name	= "Digital Input Interface",
	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
	.access	= SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info	= special_dig_in_iface_ctl_info,
	.get	= special_dig_in_iface_ctl_get,
	.put	= special_dig_in_iface_ctl_set
};

533
/* Digital output interface control for special firmware */
534
static const char *const special_dig_out_iface_labels[] = {
535 536
	"S/PDIF Optical and Coaxial", "ADAT Optical"
};
537 538 539
static int special_dig_out_iface_ctl_info(struct snd_kcontrol *kctl,
					  struct snd_ctl_elem_info *einf)
{
540 541 542
	return snd_ctl_enum_info(einf, 1,
				 ARRAY_SIZE(special_dig_out_iface_labels),
				 special_dig_out_iface_labels);
543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562
}
static int special_dig_out_iface_ctl_get(struct snd_kcontrol *kctl,
					 struct snd_ctl_elem_value *uval)
{
	struct snd_bebob *bebob = snd_kcontrol_chip(kctl);
	struct special_params *params = bebob->maudio_special_quirk;
	mutex_lock(&bebob->mutex);
	uval->value.enumerated.item[0] = params->dig_out_fmt;
	mutex_unlock(&bebob->mutex);
	return 0;
}
static int special_dig_out_iface_ctl_set(struct snd_kcontrol *kctl,
					 struct snd_ctl_elem_value *uval)
{
	struct snd_bebob *bebob = snd_kcontrol_chip(kctl);
	struct special_params *params = bebob->maudio_special_quirk;
	unsigned int id;
	int err;

	id = uval->value.enumerated.item[0];
563 564 565 566
	if (id >= ARRAY_SIZE(special_dig_out_iface_labels))
		return -EINVAL;

	mutex_lock(&bebob->mutex);
567 568 569 570 571

	err = avc_maudio_set_special_clk(bebob,
					 params->clk_src,
					 params->dig_in_fmt,
					 id, params->clk_lock);
572
	if (err >= 0) {
573
		special_stream_formation_set(bebob);
574 575
		err = 1;
	}
576 577 578 579

	mutex_unlock(&bebob->mutex);
	return err;
}
580
static const struct snd_kcontrol_new special_dig_out_iface_ctl = {
581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617
	.name	= "Digital Output Interface",
	.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
	.access	= SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info	= special_dig_out_iface_ctl_info,
	.get	= special_dig_out_iface_ctl_get,
	.put	= special_dig_out_iface_ctl_set
};

static int add_special_controls(struct snd_bebob *bebob)
{
	struct snd_kcontrol *kctl;
	struct special_params *params = bebob->maudio_special_quirk;
	int err;

	kctl = snd_ctl_new1(&special_clk_ctl, bebob);
	err = snd_ctl_add(bebob->card, kctl);
	if (err < 0)
		goto end;

	kctl = snd_ctl_new1(&special_sync_ctl, bebob);
	err = snd_ctl_add(bebob->card, kctl);
	if (err < 0)
		goto end;
	params->ctl_id_sync = &kctl->id;

	kctl = snd_ctl_new1(&special_dig_in_iface_ctl, bebob);
	err = snd_ctl_add(bebob->card, kctl);
	if (err < 0)
		goto end;

	kctl = snd_ctl_new1(&special_dig_out_iface_ctl, bebob);
	err = snd_ctl_add(bebob->card, kctl);
end:
	return err;
}

/* Hardware metering for special firmware */
618
static const char *const special_meter_labels[] = {
619 620 621 622 623 624 625 626 627 628 629 630
	ANA_IN, ANA_IN, ANA_IN, ANA_IN,
	SPDIF_IN,
	ADAT_IN, ADAT_IN, ADAT_IN, ADAT_IN,
	ANA_OUT, ANA_OUT,
	SPDIF_OUT,
	ADAT_OUT, ADAT_OUT, ADAT_OUT, ADAT_OUT,
	HP_OUT, HP_OUT,
	AUX_OUT
};
static int
special_meter_get(struct snd_bebob *bebob, u32 *target, unsigned int size)
{
631
	__be16 *buf;
632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656
	unsigned int i, c, channels;
	int err;

	channels = ARRAY_SIZE(special_meter_labels) * 2;
	if (size < channels * sizeof(u32))
		return -EINVAL;

	/* omit last 4 bytes because it's clock info. */
	buf = kmalloc(METER_SIZE_SPECIAL - 4, GFP_KERNEL);
	if (buf == NULL)
		return -ENOMEM;

	err = get_meter(bebob, (void *)buf, METER_SIZE_SPECIAL - 4);
	if (err < 0)
		goto end;

	/* Its format is u16 and some channels are unknown. */
	i = 0;
	for (c = 2; c < channels + 2; c++)
		target[i++] = be16_to_cpu(buf[c]) << 16;
end:
	kfree(buf);
	return err;
}

657
/* last 4 bytes are omitted because it's clock info. */
658
static const char *const fw410_meter_labels[] = {
659 660 661 662
	ANA_IN, DIG_IN,
	ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT, DIG_OUT,
	HP_OUT
};
663
static const char *const audiophile_meter_labels[] = {
664 665 666 667
	ANA_IN, DIG_IN,
	ANA_OUT, ANA_OUT, DIG_OUT,
	HP_OUT, AUX_OUT,
};
668
static const char *const solo_meter_labels[] = {
669 670 671 672 673 674
	ANA_IN, DIG_IN,
	STRM_IN, STRM_IN,
	ANA_OUT, DIG_OUT
};

/* no clock info */
675
static const char *const ozonic_meter_labels[] = {
676 677 678 679 680
	ANA_IN, ANA_IN,
	STRM_IN, STRM_IN,
	ANA_OUT, ANA_OUT
};
/* TODO: need testers. these positions are based on authour's assumption */
681
static const char *const nrv10_meter_labels[] = {
682 683 684 685 686 687 688 689
	ANA_IN, ANA_IN, ANA_IN, ANA_IN,
	DIG_IN,
	ANA_OUT, ANA_OUT, ANA_OUT, ANA_OUT,
	DIG_IN
};
static int
normal_meter_get(struct snd_bebob *bebob, u32 *buf, unsigned int size)
{
690
	const struct snd_bebob_meter_spec *spec = bebob->spec->meter;
691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713
	unsigned int c, channels;
	int err;

	channels = spec->num * 2;
	if (size < channels * sizeof(u32))
		return -EINVAL;

	err = get_meter(bebob, (void *)buf, size);
	if (err < 0)
		goto end;

	for (c = 0; c < channels; c++)
		be32_to_cpus(&buf[c]);

	/* swap stream channels because inverted */
	if (spec->labels == solo_meter_labels) {
		swap(buf[4], buf[6]);
		swap(buf[5], buf[7]);
	}
end:
	return err;
}

714
/* for special customized devices */
715
static const struct snd_bebob_rate_spec special_rate_spec = {
716 717 718
	.get	= &special_get_rate,
	.set	= &special_set_rate,
};
719
static const struct snd_bebob_clock_spec special_clk_spec = {
720 721
	.num	= ARRAY_SIZE(special_clk_types),
	.types	= special_clk_types,
722 723
	.get	= &special_clk_get,
};
724
static const struct snd_bebob_meter_spec special_meter_spec = {
725 726 727 728
	.num	= ARRAY_SIZE(special_meter_labels),
	.labels	= special_meter_labels,
	.get	= &special_meter_get
};
729
const struct snd_bebob_spec maudio_special_spec = {
730 731 732 733 734
	.clock	= &special_clk_spec,
	.rate	= &special_rate_spec,
	.meter	= &special_meter_spec
};

735
/* Firewire 410 specification */
736
static const struct snd_bebob_rate_spec usual_rate_spec = {
737 738 739
	.get	= &snd_bebob_stream_get_rate,
	.set	= &snd_bebob_stream_set_rate,
};
740
static const struct snd_bebob_meter_spec fw410_meter_spec = {
741 742 743 744
	.num	= ARRAY_SIZE(fw410_meter_labels),
	.labels	= fw410_meter_labels,
	.get	= &normal_meter_get
};
745
const struct snd_bebob_spec maudio_fw410_spec = {
746 747 748 749 750 751
	.clock	= NULL,
	.rate	= &usual_rate_spec,
	.meter	= &fw410_meter_spec
};

/* Firewire Audiophile specification */
752
static const struct snd_bebob_meter_spec audiophile_meter_spec = {
753 754 755 756
	.num	= ARRAY_SIZE(audiophile_meter_labels),
	.labels	= audiophile_meter_labels,
	.get	= &normal_meter_get
};
757
const struct snd_bebob_spec maudio_audiophile_spec = {
758 759 760 761 762 763
	.clock	= NULL,
	.rate	= &usual_rate_spec,
	.meter	= &audiophile_meter_spec
};

/* Firewire Solo specification */
764
static const struct snd_bebob_meter_spec solo_meter_spec = {
765 766 767 768
	.num	= ARRAY_SIZE(solo_meter_labels),
	.labels	= solo_meter_labels,
	.get	= &normal_meter_get
};
769
const struct snd_bebob_spec maudio_solo_spec = {
770 771 772 773 774 775
	.clock	= NULL,
	.rate	= &usual_rate_spec,
	.meter	= &solo_meter_spec
};

/* Ozonic specification */
776
static const struct snd_bebob_meter_spec ozonic_meter_spec = {
777 778 779 780
	.num	= ARRAY_SIZE(ozonic_meter_labels),
	.labels	= ozonic_meter_labels,
	.get	= &normal_meter_get
};
781
const struct snd_bebob_spec maudio_ozonic_spec = {
782 783 784 785 786 787
	.clock	= NULL,
	.rate	= &usual_rate_spec,
	.meter	= &ozonic_meter_spec
};

/* NRV10 specification */
788
static const struct snd_bebob_meter_spec nrv10_meter_spec = {
789 790 791 792
	.num	= ARRAY_SIZE(nrv10_meter_labels),
	.labels	= nrv10_meter_labels,
	.get	= &normal_meter_get
};
793
const struct snd_bebob_spec maudio_nrv10_spec = {
794 795 796 797
	.clock	= NULL,
	.rate	= &usual_rate_spec,
	.meter	= &nrv10_meter_spec
};