sb_mixer.c 19.3 KB
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770
/*
 * sound/oss/sb_mixer.c
 *
 * The low level mixer driver for the Sound Blaster compatible cards.
 */
/*
 * Copyright (C) by Hannu Savolainen 1993-1997
 *
 * OSS/Free for Linux is distributed under the GNU GENERAL PUBLIC LICENSE (GPL)
 * Version 2 (June 1991). See the "COPYING" file distributed with this software
 * for more info.
 *
 *
 * Thomas Sailer				: ioctl code reworked (vmalloc/vfree removed)
 * Rolf Fokkens (Dec 20 1998)	: Moved ESS stuff into sb_ess.[ch]
 * Stanislav Voronyi <stas@esc.kharkov.com>	: Support for AWE 3DSE device (Jun 7 1999)
 */

#include <linux/slab.h>

#include "sound_config.h"

#define __SB_MIXER_C__

#include "sb.h"
#include "sb_mixer.h"

#include "sb_ess.h"

#define SBPRO_RECORDING_DEVICES	(SOUND_MASK_LINE | SOUND_MASK_MIC | SOUND_MASK_CD)

/* Same as SB Pro, unless I find otherwise */
#define SGNXPRO_RECORDING_DEVICES SBPRO_RECORDING_DEVICES

#define SBPRO_MIXER_DEVICES		(SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_LINE | SOUND_MASK_MIC | \
					 SOUND_MASK_CD | SOUND_MASK_VOLUME)

/* SG NX Pro has treble and bass settings on the mixer. The 'speaker'
 * channel is the COVOX/DisneySoundSource emulation volume control
 * on the mixer. It does NOT control speaker volume. Should have own
 * mask eventually?
 */
#define SGNXPRO_MIXER_DEVICES	(SBPRO_MIXER_DEVICES|SOUND_MASK_BASS| \
				 SOUND_MASK_TREBLE|SOUND_MASK_SPEAKER )

#define SB16_RECORDING_DEVICES		(SOUND_MASK_SYNTH | SOUND_MASK_LINE | SOUND_MASK_MIC | \
					 SOUND_MASK_CD)

#define SB16_OUTFILTER_DEVICES		(SOUND_MASK_LINE | SOUND_MASK_MIC | \
					 SOUND_MASK_CD)

#define SB16_MIXER_DEVICES		(SOUND_MASK_SYNTH | SOUND_MASK_PCM | SOUND_MASK_SPEAKER | SOUND_MASK_LINE | SOUND_MASK_MIC | \
					 SOUND_MASK_CD | \
					 SOUND_MASK_IGAIN | SOUND_MASK_OGAIN | \
					 SOUND_MASK_VOLUME | SOUND_MASK_BASS | SOUND_MASK_TREBLE | \
					SOUND_MASK_IMIX)

/* These are the only devices that are working at the moment.  Others could
 * be added once they are identified and a method is found to control them.
 */
#define ALS007_MIXER_DEVICES	(SOUND_MASK_SYNTH | SOUND_MASK_LINE | \
				 SOUND_MASK_PCM | SOUND_MASK_MIC | \
				 SOUND_MASK_CD | \
				 SOUND_MASK_VOLUME)

static mixer_tab sbpro_mix = {
MIX_ENT(SOUND_MIXER_VOLUME,	0x22, 7, 4, 0x22, 3, 4),
MIX_ENT(SOUND_MIXER_BASS,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_TREBLE,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_SYNTH,	0x26, 7, 4, 0x26, 3, 4),
MIX_ENT(SOUND_MIXER_PCM,	0x04, 7, 4, 0x04, 3, 4),
MIX_ENT(SOUND_MIXER_SPEAKER,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_LINE,	0x2e, 7, 4, 0x2e, 3, 4),
MIX_ENT(SOUND_MIXER_MIC,	0x0a, 2, 3, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_CD,		0x28, 7, 4, 0x28, 3, 4),
MIX_ENT(SOUND_MIXER_IMIX,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_ALTPCM,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_RECLEV,	0x00, 0, 0, 0x00, 0, 0)
};

static mixer_tab sb16_mix = {
MIX_ENT(SOUND_MIXER_VOLUME,	0x30, 7, 5, 0x31, 7, 5),
MIX_ENT(SOUND_MIXER_BASS,	0x46, 7, 4, 0x47, 7, 4),
MIX_ENT(SOUND_MIXER_TREBLE,	0x44, 7, 4, 0x45, 7, 4),
MIX_ENT(SOUND_MIXER_SYNTH,	0x34, 7, 5, 0x35, 7, 5),
MIX_ENT(SOUND_MIXER_PCM,	0x32, 7, 5, 0x33, 7, 5),
MIX_ENT(SOUND_MIXER_SPEAKER,	0x3b, 7, 2, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_LINE,	0x38, 7, 5, 0x39, 7, 5),
MIX_ENT(SOUND_MIXER_MIC,	0x3a, 7, 5, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_CD,		0x36, 7, 5, 0x37, 7, 5),
MIX_ENT(SOUND_MIXER_IMIX,	0x3c, 0, 1, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_ALTPCM,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_RECLEV,	0x3f, 7, 2, 0x40, 7, 2), /* Obsolete. Use IGAIN */
MIX_ENT(SOUND_MIXER_IGAIN,	0x3f, 7, 2, 0x40, 7, 2),
MIX_ENT(SOUND_MIXER_OGAIN,	0x41, 7, 2, 0x42, 7, 2)
};

static mixer_tab als007_mix = 
{
MIX_ENT(SOUND_MIXER_VOLUME,	0x62, 7, 4, 0x62, 3, 4),
MIX_ENT(SOUND_MIXER_BASS,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_TREBLE,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_SYNTH,	0x66, 7, 4, 0x66, 3, 4),
MIX_ENT(SOUND_MIXER_PCM,	0x64, 7, 4, 0x64, 3, 4),
MIX_ENT(SOUND_MIXER_SPEAKER,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_LINE,	0x6e, 7, 4, 0x6e, 3, 4),
MIX_ENT(SOUND_MIXER_MIC,	0x6a, 2, 3, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_CD,		0x68, 7, 4, 0x68, 3, 4),
MIX_ENT(SOUND_MIXER_IMIX,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_ALTPCM,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_RECLEV,	0x00, 0, 0, 0x00, 0, 0), /* Obsolete. Use IGAIN */
MIX_ENT(SOUND_MIXER_IGAIN,	0x00, 0, 0, 0x00, 0, 0),
MIX_ENT(SOUND_MIXER_OGAIN,	0x00, 0, 0, 0x00, 0, 0)
};


/* SM_GAMES          Master volume is lower and PCM & FM volumes
			     higher than with SB Pro. This improves the
			     sound quality */

static int smg_default_levels[32] =
{
  0x2020,			/* Master Volume */
  0x4b4b,			/* Bass */
  0x4b4b,			/* Treble */
  0x6464,			/* FM */
  0x6464,			/* PCM */
  0x4b4b,			/* PC Speaker */
  0x4b4b,			/* Ext Line */
  0x0000,			/* Mic */
  0x4b4b,			/* CD */
  0x4b4b,			/* Recording monitor */
  0x4b4b,			/* SB PCM */
  0x4b4b,			/* Recording level */
  0x4b4b,			/* Input gain */
  0x4b4b,			/* Output gain */
  0x4040,			/* Line1 */
  0x4040,			/* Line2 */
  0x1515			/* Line3 */
};

static int sb_default_levels[32] =
{
  0x5a5a,			/* Master Volume */
  0x4b4b,			/* Bass */
  0x4b4b,			/* Treble */
  0x4b4b,			/* FM */
  0x4b4b,			/* PCM */
  0x4b4b,			/* PC Speaker */
  0x4b4b,			/* Ext Line */
  0x1010,			/* Mic */
  0x4b4b,			/* CD */
  0x0000,			/* Recording monitor */
  0x4b4b,			/* SB PCM */
  0x4b4b,			/* Recording level */
  0x4b4b,			/* Input gain */
  0x4b4b,			/* Output gain */
  0x4040,			/* Line1 */
  0x4040,			/* Line2 */
  0x1515			/* Line3 */
};

static unsigned char sb16_recmasks_L[SOUND_MIXER_NRDEVICES] =
{
	0x00,	/* SOUND_MIXER_VOLUME	*/
	0x00,	/* SOUND_MIXER_BASS	*/
	0x00,	/* SOUND_MIXER_TREBLE	*/
	0x40,	/* SOUND_MIXER_SYNTH	*/
	0x00,	/* SOUND_MIXER_PCM	*/
	0x00,	/* SOUND_MIXER_SPEAKER	*/
	0x10,	/* SOUND_MIXER_LINE	*/
	0x01,	/* SOUND_MIXER_MIC	*/
	0x04,	/* SOUND_MIXER_CD	*/
	0x00,	/* SOUND_MIXER_IMIX	*/
	0x00,	/* SOUND_MIXER_ALTPCM	*/
	0x00,	/* SOUND_MIXER_RECLEV	*/
	0x00,	/* SOUND_MIXER_IGAIN	*/
	0x00	/* SOUND_MIXER_OGAIN	*/
};

static unsigned char sb16_recmasks_R[SOUND_MIXER_NRDEVICES] =
{
	0x00,	/* SOUND_MIXER_VOLUME	*/
	0x00,	/* SOUND_MIXER_BASS	*/
	0x00,	/* SOUND_MIXER_TREBLE	*/
	0x20,	/* SOUND_MIXER_SYNTH	*/
	0x00,	/* SOUND_MIXER_PCM	*/
	0x00,	/* SOUND_MIXER_SPEAKER	*/
	0x08,	/* SOUND_MIXER_LINE	*/
	0x01,	/* SOUND_MIXER_MIC	*/
	0x02,	/* SOUND_MIXER_CD	*/
	0x00,	/* SOUND_MIXER_IMIX	*/
	0x00,	/* SOUND_MIXER_ALTPCM	*/
	0x00,	/* SOUND_MIXER_RECLEV	*/
	0x00,	/* SOUND_MIXER_IGAIN	*/
	0x00	/* SOUND_MIXER_OGAIN	*/
};

static char     smw_mix_regs[] =	/* Left mixer registers */
{
  0x0b,				/* SOUND_MIXER_VOLUME */
  0x0d,				/* SOUND_MIXER_BASS */
  0x0d,				/* SOUND_MIXER_TREBLE */
  0x05,				/* SOUND_MIXER_SYNTH */
  0x09,				/* SOUND_MIXER_PCM */
  0x00,				/* SOUND_MIXER_SPEAKER */
  0x03,				/* SOUND_MIXER_LINE */
  0x01,				/* SOUND_MIXER_MIC */
  0x07,				/* SOUND_MIXER_CD */
  0x00,				/* SOUND_MIXER_IMIX */
  0x00,				/* SOUND_MIXER_ALTPCM */
  0x00,				/* SOUND_MIXER_RECLEV */
  0x00,				/* SOUND_MIXER_IGAIN */
  0x00,				/* SOUND_MIXER_OGAIN */
  0x00,				/* SOUND_MIXER_LINE1 */
  0x00,				/* SOUND_MIXER_LINE2 */
  0x00				/* SOUND_MIXER_LINE3 */
};

static int      sbmixnum = 1;

static void     sb_mixer_reset(sb_devc * devc);

void sb_mixer_set_stereo(sb_devc * devc, int mode)
{
	sb_chgmixer(devc, OUT_FILTER, STEREO_DAC, (mode ? STEREO_DAC : MONO_DAC));
}

static int detect_mixer(sb_devc * devc)
{
	/* Just trust the mixer is there */
	return 1;
}

static void change_bits(sb_devc * devc, unsigned char *regval, int dev, int chn, int newval)
{
	unsigned char mask;
	int shift;

	mask = (1 << (*devc->iomap)[dev][chn].nbits) - 1;
	newval = (int) ((newval * mask) + 50) / 100;	/* Scale */

	shift = (*devc->iomap)[dev][chn].bitoffs - (*devc->iomap)[dev][LEFT_CHN].nbits + 1;

	*regval &= ~(mask << shift);	/* Mask out previous value */
	*regval |= (newval & mask) << shift;	/* Set the new value */
}

static int sb_mixer_get(sb_devc * devc, int dev)
{
	if (!((1 << dev) & devc->supported_devices))
		return -EINVAL;
	return devc->levels[dev];
}

void smw_mixer_init(sb_devc * devc)
{
	int i;

	sb_setmixer(devc, 0x00, 0x18);	/* Mute unused (Telephone) line */
	sb_setmixer(devc, 0x10, 0x38);	/* Config register 2 */

	devc->supported_devices = 0;
	for (i = 0; i < sizeof(smw_mix_regs); i++)
		if (smw_mix_regs[i] != 0)
			devc->supported_devices |= (1 << i);

	devc->supported_rec_devices = devc->supported_devices &
		~(SOUND_MASK_BASS | SOUND_MASK_TREBLE | SOUND_MASK_PCM | SOUND_MASK_VOLUME);
	sb_mixer_reset(devc);
}

int sb_common_mixer_set(sb_devc * devc, int dev, int left, int right)
{
	int regoffs;
	unsigned char val;

	if ((dev < 0) || (dev >= devc->iomap_sz))
		return -EINVAL;

	regoffs = (*devc->iomap)[dev][LEFT_CHN].regno;

	if (regoffs == 0)
		return -EINVAL;

	val = sb_getmixer(devc, regoffs);
	change_bits(devc, &val, dev, LEFT_CHN, left);

	if ((*devc->iomap)[dev][RIGHT_CHN].regno != regoffs)	/*
								 * Change register
								 */
	{
		sb_setmixer(devc, regoffs, val);	/*
							 * Save the old one
							 */
		regoffs = (*devc->iomap)[dev][RIGHT_CHN].regno;

		if (regoffs == 0)
			return left | (left << 8);	/*
							 * Just left channel present
							 */

		val = sb_getmixer(devc, regoffs);	/*
							 * Read the new one
							 */
	}
	change_bits(devc, &val, dev, RIGHT_CHN, right);

	sb_setmixer(devc, regoffs, val);

	return left | (right << 8);
}

static int smw_mixer_set(sb_devc * devc, int dev, int left, int right)
{
	int reg, val;

	switch (dev)
	{
		case SOUND_MIXER_VOLUME:
			sb_setmixer(devc, 0x0b, 96 - (96 * left / 100));	/* 96=mute, 0=max */
			sb_setmixer(devc, 0x0c, 96 - (96 * right / 100));
			break;

		case SOUND_MIXER_BASS:
		case SOUND_MIXER_TREBLE:
			devc->levels[dev] = left | (right << 8);
			/* Set left bass and treble values */
			val = ((devc->levels[SOUND_MIXER_TREBLE] & 0xff) * 16 / (unsigned) 100) << 4;
			val |= ((devc->levels[SOUND_MIXER_BASS] & 0xff) * 16 / (unsigned) 100) & 0x0f;
			sb_setmixer(devc, 0x0d, val);

			/* Set right bass and treble values */
			val = (((devc->levels[SOUND_MIXER_TREBLE] >> 8) & 0xff) * 16 / (unsigned) 100) << 4;
			val |= (((devc->levels[SOUND_MIXER_BASS] >> 8) & 0xff) * 16 / (unsigned) 100) & 0x0f;
			sb_setmixer(devc, 0x0e, val);
		
			break;

		default:
			/* bounds check */
			if (dev < 0 || dev >= ARRAY_SIZE(smw_mix_regs))
				return -EINVAL;
			reg = smw_mix_regs[dev];
			if (reg == 0)
				return -EINVAL;
			sb_setmixer(devc, reg, (24 - (24 * left / 100)) | 0x20);	/* 24=mute, 0=max */
			sb_setmixer(devc, reg + 1, (24 - (24 * right / 100)) | 0x40);
	}

	devc->levels[dev] = left | (right << 8);
	return left | (right << 8);
}

static int sb_mixer_set(sb_devc * devc, int dev, int value)
{
	int left = value & 0x000000ff;
	int right = (value & 0x0000ff00) >> 8;
	int retval;

	if (left > 100)
		left = 100;
	if (right > 100)
		right = 100;

	if ((dev < 0) || (dev > 31))
		return -EINVAL;

	if (!(devc->supported_devices & (1 << dev)))	/*
							 * Not supported
							 */
		return -EINVAL;

	/* Differentiate depending on the chipsets */
	switch (devc->model) {
	case MDL_SMW:
		retval = smw_mixer_set(devc, dev, left, right);
		break;
	case MDL_ESS:
		retval = ess_mixer_set(devc, dev, left, right);
		break;
	default:
		retval = sb_common_mixer_set(devc, dev, left, right);
	}
	if (retval >= 0) devc->levels[dev] = retval;

	return retval;
}

/*
 * set_recsrc doesn't apply to ES188x
 */
static void set_recsrc(sb_devc * devc, int src)
{
	sb_setmixer(devc, RECORD_SRC, (sb_getmixer(devc, RECORD_SRC) & ~7) | (src & 0x7));
}

static int set_recmask(sb_devc * devc, int mask)
{
	int devmask, i;
	unsigned char  regimageL, regimageR;

	devmask = mask & devc->supported_rec_devices;

	switch (devc->model)
	{
		case MDL_SBPRO:
		case MDL_ESS:
		case MDL_JAZZ:
		case MDL_SMW:
			if (devc->model == MDL_ESS && ess_set_recmask (devc, &devmask)) {
				break;
			};
			if (devmask != SOUND_MASK_MIC &&
				devmask != SOUND_MASK_LINE &&
				devmask != SOUND_MASK_CD)
			{
				/*
				 * More than one device selected. Drop the
				 * previous selection
				 */
				devmask &= ~devc->recmask;
			}
			if (devmask != SOUND_MASK_MIC &&
				devmask != SOUND_MASK_LINE &&
				devmask != SOUND_MASK_CD)
			{
				/*
				 * More than one device selected. Default to
				 * mic
				 */
				devmask = SOUND_MASK_MIC;
			}
			if (devmask ^ devc->recmask)	/*
							 *	Input source changed
							 */
			{
				switch (devmask)
				{
					case SOUND_MASK_MIC:
						set_recsrc(devc, SRC__MIC);
						break;

					case SOUND_MASK_LINE:
						set_recsrc(devc, SRC__LINE);
						break;

					case SOUND_MASK_CD:
						set_recsrc(devc, SRC__CD);
						break;

					default:
						set_recsrc(devc, SRC__MIC);
				}
			}
			break;

		case MDL_SB16:
			if (!devmask)
				devmask = SOUND_MASK_MIC;

			if (devc->submodel == SUBMDL_ALS007) 
			{
				switch (devmask) 
				{
					case SOUND_MASK_LINE:
						sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_LINE);
						break;
					case SOUND_MASK_CD:
						sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_CD);
						break;
					case SOUND_MASK_SYNTH:
						sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_SYNTH);
						break;
					default:           /* Also takes care of SOUND_MASK_MIC case */
						sb_setmixer(devc, ALS007_RECORD_SRC, ALS007_MIC);
						break;
				}
			}
			else
			{
				regimageL = regimageR = 0;
				for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
				{
					if ((1 << i) & devmask)
					{
						regimageL |= sb16_recmasks_L[i];
						regimageR |= sb16_recmasks_R[i];
					}
					sb_setmixer (devc, SB16_IMASK_L, regimageL);
					sb_setmixer (devc, SB16_IMASK_R, regimageR);
				}
			}
			break;
	}
	devc->recmask = devmask;
	return devc->recmask;
}

static int set_outmask(sb_devc * devc, int mask)
{
	int devmask, i;
	unsigned char  regimage;

	devmask = mask & devc->supported_out_devices;

	switch (devc->model)
	{
		case MDL_SB16:
			if (devc->submodel == SUBMDL_ALS007) 
				break;
			else
			{
				regimage = 0;
				for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
				{
					if ((1 << i) & devmask)
					{
						regimage |= (sb16_recmasks_L[i] | sb16_recmasks_R[i]);
					}
					sb_setmixer (devc, SB16_OMASK, regimage);
				}
			}
			break;
		default:
			break;
	}

	devc->outmask = devmask;
	return devc->outmask;
}

static int sb_mixer_ioctl(int dev, unsigned int cmd, void __user *arg)
{
	sb_devc *devc = mixer_devs[dev]->devc;
	int val, ret;
	int __user *p = arg;

	/*
	 * Use ioctl(fd, SOUND_MIXER_AGC, &mode) to turn AGC off (0) or on (1).
	 * Use ioctl(fd, SOUND_MIXER_3DSE, &mode) to turn 3DSE off (0) or on (1)
	 *					      or mode==2 put 3DSE state to mode.
	 */
	if (devc->model == MDL_SB16) {
		if (cmd == SOUND_MIXER_AGC) 
		{
			if (get_user(val, p))
				return -EFAULT;
			sb_setmixer(devc, 0x43, (~val) & 0x01);
			return 0;
		}
		if (cmd == SOUND_MIXER_3DSE) 
		{
			/* I put here 15, but I don't know the exact version.
			   At least my 4.13 havn't 3DSE, 4.16 has it. */
			if (devc->minor < 15)
				return -EINVAL;
			if (get_user(val, p))
				return -EFAULT;
			if (val == 0 || val == 1)
				sb_chgmixer(devc, AWE_3DSE, 0x01, val);
			else if (val == 2)
			{
				ret = sb_getmixer(devc, AWE_3DSE)&0x01;
				return put_user(ret, p);
			}
			else
				return -EINVAL;
			return 0;
		}
	}
	if (((cmd >> 8) & 0xff) == 'M') 
	{
		if (_SIOC_DIR(cmd) & _SIOC_WRITE) 
		{
			if (get_user(val, p))
				return -EFAULT;
			switch (cmd & 0xff) 
			{
				case SOUND_MIXER_RECSRC:
					ret = set_recmask(devc, val);
					break;

				case SOUND_MIXER_OUTSRC:
					ret = set_outmask(devc, val);
					break;

				default:
					ret = sb_mixer_set(devc, cmd & 0xff, val);
			}
		}
		else switch (cmd & 0xff) 
		{
			case SOUND_MIXER_RECSRC:
				ret = devc->recmask;
				break;
				  
			case SOUND_MIXER_OUTSRC:
				ret = devc->outmask;
				break;
				  
			case SOUND_MIXER_DEVMASK:
				ret = devc->supported_devices;
				break;
				  
			case SOUND_MIXER_STEREODEVS:
				ret = devc->supported_devices;
				/* The ESS seems to have stereo mic controls */
				if (devc->model == MDL_ESS)
					ret &= ~(SOUND_MASK_SPEAKER|SOUND_MASK_IMIX);
				else if (devc->model != MDL_JAZZ && devc->model != MDL_SMW)
					ret &= ~(SOUND_MASK_MIC | SOUND_MASK_SPEAKER | SOUND_MASK_IMIX);
				break;
				  
			case SOUND_MIXER_RECMASK:
				ret = devc->supported_rec_devices;
				break;
				  
			case SOUND_MIXER_OUTMASK:
				ret = devc->supported_out_devices;
				break;
				  
			case SOUND_MIXER_CAPS:
				ret = devc->mixer_caps;
				break;
				    
			default:
				ret = sb_mixer_get(devc, cmd & 0xff);
				break;
		}
		return put_user(ret, p); 
	} else
		return -EINVAL;
}

static struct mixer_operations sb_mixer_operations =
{
	.owner	= THIS_MODULE,
	.id	= "SB",
	.name	= "Sound Blaster",
	.ioctl	= sb_mixer_ioctl
};

static struct mixer_operations als007_mixer_operations =
{
	.owner	= THIS_MODULE,
	.id	= "ALS007",
	.name	= "Avance ALS-007",
	.ioctl	= sb_mixer_ioctl
};

static void sb_mixer_reset(sb_devc * devc)
{
	char name[32];
	int i;

	sprintf(name, "SB_%d", devc->sbmixnum);

	if (devc->sbmo.sm_games)
		devc->levels = load_mixer_volumes(name, smg_default_levels, 1);
	else
		devc->levels = load_mixer_volumes(name, sb_default_levels, 1);

	for (i = 0; i < SOUND_MIXER_NRDEVICES; i++)
		sb_mixer_set(devc, i, devc->levels[i]);

	if (devc->model != MDL_ESS || !ess_mixer_reset (devc)) {
		set_recmask(devc, SOUND_MASK_MIC);
	};
}

int sb_mixer_init(sb_devc * devc, struct module *owner)
{
	int mixer_type = 0;
	int m;

	devc->sbmixnum = sbmixnum++;
	devc->levels = NULL;

	sb_setmixer(devc, 0x00, 0);	/* Reset mixer */

	if (!(mixer_type = detect_mixer(devc)))
		return 0;	/* No mixer. Why? */

	switch (devc->model)
	{
		case MDL_ESSPCI:
		case MDL_YMPCI:
		case MDL_SBPRO:
		case MDL_AZTECH:
		case MDL_JAZZ:
			devc->mixer_caps = SOUND_CAP_EXCL_INPUT;
			devc->supported_devices = SBPRO_MIXER_DEVICES;
			devc->supported_rec_devices = SBPRO_RECORDING_DEVICES;
			devc->iomap = &sbpro_mix;
			devc->iomap_sz = ARRAY_SIZE(sbpro_mix);
			break;

		case MDL_ESS:
			ess_mixer_init (devc);
			break;

		case MDL_SMW:
			devc->mixer_caps = SOUND_CAP_EXCL_INPUT;
			devc->supported_devices = 0;
			devc->supported_rec_devices = 0;
			devc->iomap = &sbpro_mix;
			devc->iomap_sz = ARRAY_SIZE(sbpro_mix);
			smw_mixer_init(devc);
			break;

		case MDL_SB16:
			devc->mixer_caps = 0;
			devc->supported_rec_devices = SB16_RECORDING_DEVICES;
			devc->supported_out_devices = SB16_OUTFILTER_DEVICES;
			if (devc->submodel != SUBMDL_ALS007)
			{
				devc->supported_devices = SB16_MIXER_DEVICES;
				devc->iomap = &sb16_mix;
				devc->iomap_sz = ARRAY_SIZE(sb16_mix);
			}
			else
			{
				devc->supported_devices = ALS007_MIXER_DEVICES;
				devc->iomap = &als007_mix;
				devc->iomap_sz = ARRAY_SIZE(als007_mix);
			}
			break;

		default:
			printk(KERN_WARNING "sb_mixer: Unsupported mixer type %d\n", devc->model);
			return 0;
	}

	m = sound_alloc_mixerdev();
	if (m == -1)
		return 0;

	mixer_devs[m] = kmalloc(sizeof(struct mixer_operations), GFP_KERNEL);
	if (mixer_devs[m] == NULL)
	{
		printk(KERN_ERR "sb_mixer: Can't allocate memory\n");
		sound_unload_mixerdev(m);
		return 0;
	}

	if (devc->submodel != SUBMDL_ALS007)
		memcpy ((char *) mixer_devs[m], (char *) &sb_mixer_operations, sizeof (struct mixer_operations));
	else
		memcpy ((char *) mixer_devs[m], (char *) &als007_mixer_operations, sizeof (struct mixer_operations));

	mixer_devs[m]->devc = devc;

	if (owner)
			 mixer_devs[m]->owner = owner;
	
	devc->my_mixerdev = m;
	sb_mixer_reset(devc);
	return 1;
}

void sb_mixer_unload(sb_devc *devc)
{
	if (devc->my_mixerdev == -1)
		return;

	kfree(mixer_devs[devc->my_mixerdev]);
	sound_unload_mixerdev(devc->my_mixerdev);
	sbmixnum--;
}