xref: /openbmc/linux/sound/isa/msnd/msnd_pinnacle.c (revision ecd25094)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*********************************************************************
3  *
4  * Linux multisound pinnacle/fiji driver for ALSA.
5  *
6  * 2002/06/30 Karsten Wiese:
7  *	for now this is only used to build a pinnacle / fiji driver.
8  *	the OSS parent of this code is designed to also support
9  *	the multisound classic via the file msnd_classic.c.
10  *	to make it easier for some brave heart to implemt classic
11  *	support in alsa, i left all the MSND_CLASSIC tokens in this file.
12  *	but for now this untested & undone.
13  *
14  * ripped from linux kernel 2.4.18 by Karsten Wiese.
15  *
16  * the following is a copy of the 2.4.18 OSS FREE file-heading comment:
17  *
18  * Turtle Beach MultiSound Sound Card Driver for Linux
19  * msnd_pinnacle.c / msnd_classic.c
20  *
21  * -- If MSND_CLASSIC is defined:
22  *
23  *     -> driver for Turtle Beach Classic/Monterey/Tahiti
24  *
25  * -- Else
26  *
27  *     -> driver for Turtle Beach Pinnacle/Fiji
28  *
29  * 12-3-2000  Modified IO port validation  Steve Sycamore
30  *
31  * Copyright (C) 1998 Andrew Veliath
32  *
33  ********************************************************************/
34 
35 #include <linux/kernel.h>
36 #include <linux/module.h>
37 #include <linux/interrupt.h>
38 #include <linux/types.h>
39 #include <linux/delay.h>
40 #include <linux/ioport.h>
41 #include <linux/firmware.h>
42 #include <linux/isa.h>
43 #include <linux/isapnp.h>
44 #include <linux/irq.h>
45 #include <linux/io.h>
46 
47 #include <sound/core.h>
48 #include <sound/initval.h>
49 #include <sound/asound.h>
50 #include <sound/pcm.h>
51 #include <sound/mpu401.h>
52 
53 #ifdef MSND_CLASSIC
54 # ifndef __alpha__
55 #  define SLOWIO
56 # endif
57 #endif
58 #include "msnd.h"
59 #ifdef MSND_CLASSIC
60 #  include "msnd_classic.h"
61 #  define LOGNAME			"msnd_classic"
62 #  define DEV_NAME			"msnd-classic"
63 #else
64 #  include "msnd_pinnacle.h"
65 #  define LOGNAME			"snd_msnd_pinnacle"
66 #  define DEV_NAME			"msnd-pinnacle"
67 #endif
68 
69 static void set_default_audio_parameters(struct snd_msnd *chip)
70 {
71 	chip->play_sample_size = snd_pcm_format_width(DEFSAMPLESIZE);
72 	chip->play_sample_rate = DEFSAMPLERATE;
73 	chip->play_channels = DEFCHANNELS;
74 	chip->capture_sample_size = snd_pcm_format_width(DEFSAMPLESIZE);
75 	chip->capture_sample_rate = DEFSAMPLERATE;
76 	chip->capture_channels = DEFCHANNELS;
77 }
78 
79 static void snd_msnd_eval_dsp_msg(struct snd_msnd *chip, u16 wMessage)
80 {
81 	switch (HIBYTE(wMessage)) {
82 	case HIMT_PLAY_DONE: {
83 		if (chip->banksPlayed < 3)
84 			snd_printdd("%08X: HIMT_PLAY_DONE: %i\n",
85 				(unsigned)jiffies, LOBYTE(wMessage));
86 
87 		if (chip->last_playbank == LOBYTE(wMessage)) {
88 			snd_printdd("chip.last_playbank == LOBYTE(wMessage)\n");
89 			break;
90 		}
91 		chip->banksPlayed++;
92 
93 		if (test_bit(F_WRITING, &chip->flags))
94 			snd_msnd_DAPQ(chip, 0);
95 
96 		chip->last_playbank = LOBYTE(wMessage);
97 		chip->playDMAPos += chip->play_period_bytes;
98 		if (chip->playDMAPos > chip->playLimit)
99 			chip->playDMAPos = 0;
100 		snd_pcm_period_elapsed(chip->playback_substream);
101 
102 		break;
103 	}
104 	case HIMT_RECORD_DONE:
105 		if (chip->last_recbank == LOBYTE(wMessage))
106 			break;
107 		chip->last_recbank = LOBYTE(wMessage);
108 		chip->captureDMAPos += chip->capturePeriodBytes;
109 		if (chip->captureDMAPos > (chip->captureLimit))
110 			chip->captureDMAPos = 0;
111 
112 		if (test_bit(F_READING, &chip->flags))
113 			snd_msnd_DARQ(chip, chip->last_recbank);
114 
115 		snd_pcm_period_elapsed(chip->capture_substream);
116 		break;
117 
118 	case HIMT_DSP:
119 		switch (LOBYTE(wMessage)) {
120 #ifndef MSND_CLASSIC
121 		case HIDSP_PLAY_UNDER:
122 #endif
123 		case HIDSP_INT_PLAY_UNDER:
124 			snd_printd(KERN_WARNING LOGNAME ": Play underflow %i\n",
125 				chip->banksPlayed);
126 			if (chip->banksPlayed > 2)
127 				clear_bit(F_WRITING, &chip->flags);
128 			break;
129 
130 		case HIDSP_INT_RECORD_OVER:
131 			snd_printd(KERN_WARNING LOGNAME ": Record overflow\n");
132 			clear_bit(F_READING, &chip->flags);
133 			break;
134 
135 		default:
136 			snd_printd(KERN_WARNING LOGNAME
137 				   ": DSP message %d 0x%02x\n",
138 				   LOBYTE(wMessage), LOBYTE(wMessage));
139 			break;
140 		}
141 		break;
142 
143 	case HIMT_MIDI_IN_UCHAR:
144 		if (chip->msndmidi_mpu)
145 			snd_msndmidi_input_read(chip->msndmidi_mpu);
146 		break;
147 
148 	default:
149 		snd_printd(KERN_WARNING LOGNAME ": HIMT message %d 0x%02x\n",
150 			   HIBYTE(wMessage), HIBYTE(wMessage));
151 		break;
152 	}
153 }
154 
155 static irqreturn_t snd_msnd_interrupt(int irq, void *dev_id)
156 {
157 	struct snd_msnd *chip = dev_id;
158 	void __iomem *pwDSPQData = chip->mappedbase + DSPQ_DATA_BUFF;
159 	u16 head, tail, size;
160 
161 	/* Send ack to DSP */
162 	/* inb(chip->io + HP_RXL); */
163 
164 	/* Evaluate queued DSP messages */
165 	head = readw(chip->DSPQ + JQS_wHead);
166 	tail = readw(chip->DSPQ + JQS_wTail);
167 	size = readw(chip->DSPQ + JQS_wSize);
168 	if (head > size || tail > size)
169 		goto out;
170 	while (head != tail) {
171 		snd_msnd_eval_dsp_msg(chip, readw(pwDSPQData + 2 * head));
172 		if (++head > size)
173 			head = 0;
174 		writew(head, chip->DSPQ + JQS_wHead);
175 	}
176  out:
177 	/* Send ack to DSP */
178 	inb(chip->io + HP_RXL);
179 	return IRQ_HANDLED;
180 }
181 
182 
183 static int snd_msnd_reset_dsp(long io, unsigned char *info)
184 {
185 	int timeout = 100;
186 
187 	outb(HPDSPRESET_ON, io + HP_DSPR);
188 	msleep(1);
189 #ifndef MSND_CLASSIC
190 	if (info)
191 		*info = inb(io + HP_INFO);
192 #endif
193 	outb(HPDSPRESET_OFF, io + HP_DSPR);
194 	msleep(1);
195 	while (timeout-- > 0) {
196 		if (inb(io + HP_CVR) == HP_CVR_DEF)
197 			return 0;
198 		msleep(1);
199 	}
200 	snd_printk(KERN_ERR LOGNAME ": Cannot reset DSP\n");
201 
202 	return -EIO;
203 }
204 
205 static int snd_msnd_probe(struct snd_card *card)
206 {
207 	struct snd_msnd *chip = card->private_data;
208 	unsigned char info;
209 #ifndef MSND_CLASSIC
210 	char *xv, *rev = NULL;
211 	char *pin = "TB Pinnacle", *fiji = "TB Fiji";
212 	char *pinfiji = "TB Pinnacle/Fiji";
213 #endif
214 
215 	if (!request_region(chip->io, DSP_NUMIO, "probing")) {
216 		snd_printk(KERN_ERR LOGNAME ": I/O port conflict\n");
217 		return -ENODEV;
218 	}
219 
220 	if (snd_msnd_reset_dsp(chip->io, &info) < 0) {
221 		release_region(chip->io, DSP_NUMIO);
222 		return -ENODEV;
223 	}
224 
225 #ifdef MSND_CLASSIC
226 	strcpy(card->shortname, "Classic/Tahiti/Monterey");
227 	strcpy(card->longname, "Turtle Beach Multisound");
228 	printk(KERN_INFO LOGNAME ": %s, "
229 	       "I/O 0x%lx-0x%lx, IRQ %d, memory mapped to 0x%lX-0x%lX\n",
230 	       card->shortname,
231 	       chip->io, chip->io + DSP_NUMIO - 1,
232 	       chip->irq,
233 	       chip->base, chip->base + 0x7fff);
234 #else
235 	switch (info >> 4) {
236 	case 0xf:
237 		xv = "<= 1.15";
238 		break;
239 	case 0x1:
240 		xv = "1.18/1.2";
241 		break;
242 	case 0x2:
243 		xv = "1.3";
244 		break;
245 	case 0x3:
246 		xv = "1.4";
247 		break;
248 	default:
249 		xv = "unknown";
250 		break;
251 	}
252 
253 	switch (info & 0x7) {
254 	case 0x0:
255 		rev = "I";
256 		strcpy(card->shortname, pin);
257 		break;
258 	case 0x1:
259 		rev = "F";
260 		strcpy(card->shortname, pin);
261 		break;
262 	case 0x2:
263 		rev = "G";
264 		strcpy(card->shortname, pin);
265 		break;
266 	case 0x3:
267 		rev = "H";
268 		strcpy(card->shortname, pin);
269 		break;
270 	case 0x4:
271 		rev = "E";
272 		strcpy(card->shortname, fiji);
273 		break;
274 	case 0x5:
275 		rev = "C";
276 		strcpy(card->shortname, fiji);
277 		break;
278 	case 0x6:
279 		rev = "D";
280 		strcpy(card->shortname, fiji);
281 		break;
282 	case 0x7:
283 		rev = "A-B (Fiji) or A-E (Pinnacle)";
284 		strcpy(card->shortname, pinfiji);
285 		break;
286 	}
287 	strcpy(card->longname, "Turtle Beach Multisound Pinnacle");
288 	printk(KERN_INFO LOGNAME ": %s revision %s, Xilinx version %s, "
289 	       "I/O 0x%lx-0x%lx, IRQ %d, memory mapped to 0x%lX-0x%lX\n",
290 	       card->shortname,
291 	       rev, xv,
292 	       chip->io, chip->io + DSP_NUMIO - 1,
293 	       chip->irq,
294 	       chip->base, chip->base + 0x7fff);
295 #endif
296 
297 	release_region(chip->io, DSP_NUMIO);
298 	return 0;
299 }
300 
301 static int snd_msnd_init_sma(struct snd_msnd *chip)
302 {
303 	static int initted;
304 	u16 mastVolLeft, mastVolRight;
305 	unsigned long flags;
306 
307 #ifdef MSND_CLASSIC
308 	outb(chip->memid, chip->io + HP_MEMM);
309 #endif
310 	outb(HPBLKSEL_0, chip->io + HP_BLKS);
311 	/* Motorola 56k shared memory base */
312 	chip->SMA = chip->mappedbase + SMA_STRUCT_START;
313 
314 	if (initted) {
315 		mastVolLeft = readw(chip->SMA + SMA_wCurrMastVolLeft);
316 		mastVolRight = readw(chip->SMA + SMA_wCurrMastVolRight);
317 	} else
318 		mastVolLeft = mastVolRight = 0;
319 	memset_io(chip->mappedbase, 0, 0x8000);
320 
321 	/* Critical section: bank 1 access */
322 	spin_lock_irqsave(&chip->lock, flags);
323 	outb(HPBLKSEL_1, chip->io + HP_BLKS);
324 	memset_io(chip->mappedbase, 0, 0x8000);
325 	outb(HPBLKSEL_0, chip->io + HP_BLKS);
326 	spin_unlock_irqrestore(&chip->lock, flags);
327 
328 	/* Digital audio play queue */
329 	chip->DAPQ = chip->mappedbase + DAPQ_OFFSET;
330 	snd_msnd_init_queue(chip->DAPQ, DAPQ_DATA_BUFF, DAPQ_BUFF_SIZE);
331 
332 	/* Digital audio record queue */
333 	chip->DARQ = chip->mappedbase + DARQ_OFFSET;
334 	snd_msnd_init_queue(chip->DARQ, DARQ_DATA_BUFF, DARQ_BUFF_SIZE);
335 
336 	/* MIDI out queue */
337 	chip->MODQ = chip->mappedbase + MODQ_OFFSET;
338 	snd_msnd_init_queue(chip->MODQ, MODQ_DATA_BUFF, MODQ_BUFF_SIZE);
339 
340 	/* MIDI in queue */
341 	chip->MIDQ = chip->mappedbase + MIDQ_OFFSET;
342 	snd_msnd_init_queue(chip->MIDQ, MIDQ_DATA_BUFF, MIDQ_BUFF_SIZE);
343 
344 	/* DSP -> host message queue */
345 	chip->DSPQ = chip->mappedbase + DSPQ_OFFSET;
346 	snd_msnd_init_queue(chip->DSPQ, DSPQ_DATA_BUFF, DSPQ_BUFF_SIZE);
347 
348 	/* Setup some DSP values */
349 #ifndef MSND_CLASSIC
350 	writew(1, chip->SMA + SMA_wCurrPlayFormat);
351 	writew(chip->play_sample_size, chip->SMA + SMA_wCurrPlaySampleSize);
352 	writew(chip->play_channels, chip->SMA + SMA_wCurrPlayChannels);
353 	writew(chip->play_sample_rate, chip->SMA + SMA_wCurrPlaySampleRate);
354 #endif
355 	writew(chip->play_sample_rate, chip->SMA + SMA_wCalFreqAtoD);
356 	writew(mastVolLeft, chip->SMA + SMA_wCurrMastVolLeft);
357 	writew(mastVolRight, chip->SMA + SMA_wCurrMastVolRight);
358 #ifndef MSND_CLASSIC
359 	writel(0x00010000, chip->SMA + SMA_dwCurrPlayPitch);
360 	writel(0x00000001, chip->SMA + SMA_dwCurrPlayRate);
361 #endif
362 	writew(0x303, chip->SMA + SMA_wCurrInputTagBits);
363 
364 	initted = 1;
365 
366 	return 0;
367 }
368 
369 
370 static int upload_dsp_code(struct snd_card *card)
371 {
372 	struct snd_msnd *chip = card->private_data;
373 	const struct firmware *init_fw = NULL, *perm_fw = NULL;
374 	int err;
375 
376 	outb(HPBLKSEL_0, chip->io + HP_BLKS);
377 
378 	err = request_firmware(&init_fw, INITCODEFILE, card->dev);
379 	if (err < 0) {
380 		printk(KERN_ERR LOGNAME ": Error loading " INITCODEFILE);
381 		goto cleanup1;
382 	}
383 	err = request_firmware(&perm_fw, PERMCODEFILE, card->dev);
384 	if (err < 0) {
385 		printk(KERN_ERR LOGNAME ": Error loading " PERMCODEFILE);
386 		goto cleanup;
387 	}
388 
389 	memcpy_toio(chip->mappedbase, perm_fw->data, perm_fw->size);
390 	if (snd_msnd_upload_host(chip, init_fw->data, init_fw->size) < 0) {
391 		printk(KERN_WARNING LOGNAME ": Error uploading to DSP\n");
392 		err = -ENODEV;
393 		goto cleanup;
394 	}
395 	printk(KERN_INFO LOGNAME ": DSP firmware uploaded\n");
396 	err = 0;
397 
398 cleanup:
399 	release_firmware(perm_fw);
400 cleanup1:
401 	release_firmware(init_fw);
402 	return err;
403 }
404 
405 #ifdef MSND_CLASSIC
406 static void reset_proteus(struct snd_msnd *chip)
407 {
408 	outb(HPPRORESET_ON, chip->io + HP_PROR);
409 	msleep(TIME_PRO_RESET);
410 	outb(HPPRORESET_OFF, chip->io + HP_PROR);
411 	msleep(TIME_PRO_RESET_DONE);
412 }
413 #endif
414 
415 static int snd_msnd_initialize(struct snd_card *card)
416 {
417 	struct snd_msnd *chip = card->private_data;
418 	int err, timeout;
419 
420 #ifdef MSND_CLASSIC
421 	outb(HPWAITSTATE_0, chip->io + HP_WAIT);
422 	outb(HPBITMODE_16, chip->io + HP_BITM);
423 
424 	reset_proteus(chip);
425 #endif
426 	err = snd_msnd_init_sma(chip);
427 	if (err < 0) {
428 		printk(KERN_WARNING LOGNAME ": Cannot initialize SMA\n");
429 		return err;
430 	}
431 
432 	err = snd_msnd_reset_dsp(chip->io, NULL);
433 	if (err < 0)
434 		return err;
435 
436 	err = upload_dsp_code(card);
437 	if (err < 0) {
438 		printk(KERN_WARNING LOGNAME ": Cannot upload DSP code\n");
439 		return err;
440 	}
441 
442 	timeout = 200;
443 
444 	while (readw(chip->mappedbase)) {
445 		msleep(1);
446 		if (!timeout--) {
447 			snd_printd(KERN_ERR LOGNAME ": DSP reset timeout\n");
448 			return -EIO;
449 		}
450 	}
451 
452 	snd_msndmix_setup(chip);
453 	return 0;
454 }
455 
456 static int snd_msnd_dsp_full_reset(struct snd_card *card)
457 {
458 	struct snd_msnd *chip = card->private_data;
459 	int rv;
460 
461 	if (test_bit(F_RESETTING, &chip->flags) || ++chip->nresets > 10)
462 		return 0;
463 
464 	set_bit(F_RESETTING, &chip->flags);
465 	snd_msnd_dsp_halt(chip, NULL);	/* Unconditionally halt */
466 
467 	rv = snd_msnd_initialize(card);
468 	if (rv)
469 		printk(KERN_WARNING LOGNAME ": DSP reset failed\n");
470 	snd_msndmix_force_recsrc(chip, 0);
471 	clear_bit(F_RESETTING, &chip->flags);
472 	return rv;
473 }
474 
475 static int snd_msnd_dev_free(struct snd_device *device)
476 {
477 	snd_printdd("snd_msnd_chip_free()\n");
478 	return 0;
479 }
480 
481 static int snd_msnd_send_dsp_cmd_chk(struct snd_msnd *chip, u8 cmd)
482 {
483 	if (snd_msnd_send_dsp_cmd(chip, cmd) == 0)
484 		return 0;
485 	snd_msnd_dsp_full_reset(chip->card);
486 	return snd_msnd_send_dsp_cmd(chip, cmd);
487 }
488 
489 static int snd_msnd_calibrate_adc(struct snd_msnd *chip, u16 srate)
490 {
491 	snd_printdd("snd_msnd_calibrate_adc(%i)\n", srate);
492 	writew(srate, chip->SMA + SMA_wCalFreqAtoD);
493 	if (chip->calibrate_signal == 0)
494 		writew(readw(chip->SMA + SMA_wCurrHostStatusFlags)
495 		       | 0x0001, chip->SMA + SMA_wCurrHostStatusFlags);
496 	else
497 		writew(readw(chip->SMA + SMA_wCurrHostStatusFlags)
498 		       & ~0x0001, chip->SMA + SMA_wCurrHostStatusFlags);
499 	if (snd_msnd_send_word(chip, 0, 0, HDEXAR_CAL_A_TO_D) == 0 &&
500 	    snd_msnd_send_dsp_cmd_chk(chip, HDEX_AUX_REQ) == 0) {
501 		schedule_timeout_interruptible(msecs_to_jiffies(333));
502 		return 0;
503 	}
504 	printk(KERN_WARNING LOGNAME ": ADC calibration failed\n");
505 	return -EIO;
506 }
507 
508 /*
509  * ALSA callback function, called when attempting to open the MIDI device.
510  */
511 static int snd_msnd_mpu401_open(struct snd_mpu401 *mpu)
512 {
513 	snd_msnd_enable_irq(mpu->private_data);
514 	snd_msnd_send_dsp_cmd(mpu->private_data, HDEX_MIDI_IN_START);
515 	return 0;
516 }
517 
518 static void snd_msnd_mpu401_close(struct snd_mpu401 *mpu)
519 {
520 	snd_msnd_send_dsp_cmd(mpu->private_data, HDEX_MIDI_IN_STOP);
521 	snd_msnd_disable_irq(mpu->private_data);
522 }
523 
524 static long mpu_io[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
525 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
526 
527 static int snd_msnd_attach(struct snd_card *card)
528 {
529 	struct snd_msnd *chip = card->private_data;
530 	int err;
531 	static struct snd_device_ops ops = {
532 		.dev_free =      snd_msnd_dev_free,
533 		};
534 
535 	err = request_irq(chip->irq, snd_msnd_interrupt, 0, card->shortname,
536 			  chip);
537 	if (err < 0) {
538 		printk(KERN_ERR LOGNAME ": Couldn't grab IRQ %d\n", chip->irq);
539 		return err;
540 	}
541 	if (request_region(chip->io, DSP_NUMIO, card->shortname) == NULL) {
542 		free_irq(chip->irq, chip);
543 		return -EBUSY;
544 	}
545 
546 	if (!request_mem_region(chip->base, BUFFSIZE, card->shortname)) {
547 		printk(KERN_ERR LOGNAME
548 			": unable to grab memory region 0x%lx-0x%lx\n",
549 			chip->base, chip->base + BUFFSIZE - 1);
550 		release_region(chip->io, DSP_NUMIO);
551 		free_irq(chip->irq, chip);
552 		return -EBUSY;
553 	}
554 	chip->mappedbase = ioremap_nocache(chip->base, 0x8000);
555 	if (!chip->mappedbase) {
556 		printk(KERN_ERR LOGNAME
557 			": unable to map memory region 0x%lx-0x%lx\n",
558 			chip->base, chip->base + BUFFSIZE - 1);
559 		err = -EIO;
560 		goto err_release_region;
561 	}
562 
563 	err = snd_msnd_dsp_full_reset(card);
564 	if (err < 0)
565 		goto err_release_region;
566 
567 	/* Register device */
568 	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
569 	if (err < 0)
570 		goto err_release_region;
571 
572 	err = snd_msnd_pcm(card, 0);
573 	if (err < 0) {
574 		printk(KERN_ERR LOGNAME ": error creating new PCM device\n");
575 		goto err_release_region;
576 	}
577 
578 	err = snd_msndmix_new(card);
579 	if (err < 0) {
580 		printk(KERN_ERR LOGNAME ": error creating new Mixer device\n");
581 		goto err_release_region;
582 	}
583 
584 
585 	if (mpu_io[0] != SNDRV_AUTO_PORT) {
586 		struct snd_mpu401 *mpu;
587 
588 		err = snd_mpu401_uart_new(card, 0, MPU401_HW_MPU401,
589 					  mpu_io[0],
590 					  MPU401_MODE_INPUT |
591 					  MPU401_MODE_OUTPUT,
592 					  mpu_irq[0],
593 					  &chip->rmidi);
594 		if (err < 0) {
595 			printk(KERN_ERR LOGNAME
596 				": error creating new Midi device\n");
597 			goto err_release_region;
598 		}
599 		mpu = chip->rmidi->private_data;
600 
601 		mpu->open_input = snd_msnd_mpu401_open;
602 		mpu->close_input = snd_msnd_mpu401_close;
603 		mpu->private_data = chip;
604 	}
605 
606 	disable_irq(chip->irq);
607 	snd_msnd_calibrate_adc(chip, chip->play_sample_rate);
608 	snd_msndmix_force_recsrc(chip, 0);
609 
610 	err = snd_card_register(card);
611 	if (err < 0)
612 		goto err_release_region;
613 
614 	return 0;
615 
616 err_release_region:
617 	iounmap(chip->mappedbase);
618 	release_mem_region(chip->base, BUFFSIZE);
619 	release_region(chip->io, DSP_NUMIO);
620 	free_irq(chip->irq, chip);
621 	return err;
622 }
623 
624 
625 static void snd_msnd_unload(struct snd_card *card)
626 {
627 	struct snd_msnd *chip = card->private_data;
628 
629 	iounmap(chip->mappedbase);
630 	release_mem_region(chip->base, BUFFSIZE);
631 	release_region(chip->io, DSP_NUMIO);
632 	free_irq(chip->irq, chip);
633 	snd_card_free(card);
634 }
635 
636 #ifndef MSND_CLASSIC
637 
638 /* Pinnacle/Fiji Logical Device Configuration */
639 
640 static int snd_msnd_write_cfg(int cfg, int reg, int value)
641 {
642 	outb(reg, cfg);
643 	outb(value, cfg + 1);
644 	if (value != inb(cfg + 1)) {
645 		printk(KERN_ERR LOGNAME ": snd_msnd_write_cfg: I/O error\n");
646 		return -EIO;
647 	}
648 	return 0;
649 }
650 
651 static int snd_msnd_write_cfg_io0(int cfg, int num, u16 io)
652 {
653 	if (snd_msnd_write_cfg(cfg, IREG_LOGDEVICE, num))
654 		return -EIO;
655 	if (snd_msnd_write_cfg(cfg, IREG_IO0_BASEHI, HIBYTE(io)))
656 		return -EIO;
657 	if (snd_msnd_write_cfg(cfg, IREG_IO0_BASELO, LOBYTE(io)))
658 		return -EIO;
659 	return 0;
660 }
661 
662 static int snd_msnd_write_cfg_io1(int cfg, int num, u16 io)
663 {
664 	if (snd_msnd_write_cfg(cfg, IREG_LOGDEVICE, num))
665 		return -EIO;
666 	if (snd_msnd_write_cfg(cfg, IREG_IO1_BASEHI, HIBYTE(io)))
667 		return -EIO;
668 	if (snd_msnd_write_cfg(cfg, IREG_IO1_BASELO, LOBYTE(io)))
669 		return -EIO;
670 	return 0;
671 }
672 
673 static int snd_msnd_write_cfg_irq(int cfg, int num, u16 irq)
674 {
675 	if (snd_msnd_write_cfg(cfg, IREG_LOGDEVICE, num))
676 		return -EIO;
677 	if (snd_msnd_write_cfg(cfg, IREG_IRQ_NUMBER, LOBYTE(irq)))
678 		return -EIO;
679 	if (snd_msnd_write_cfg(cfg, IREG_IRQ_TYPE, IRQTYPE_EDGE))
680 		return -EIO;
681 	return 0;
682 }
683 
684 static int snd_msnd_write_cfg_mem(int cfg, int num, int mem)
685 {
686 	u16 wmem;
687 
688 	mem >>= 8;
689 	wmem = (u16)(mem & 0xfff);
690 	if (snd_msnd_write_cfg(cfg, IREG_LOGDEVICE, num))
691 		return -EIO;
692 	if (snd_msnd_write_cfg(cfg, IREG_MEMBASEHI, HIBYTE(wmem)))
693 		return -EIO;
694 	if (snd_msnd_write_cfg(cfg, IREG_MEMBASELO, LOBYTE(wmem)))
695 		return -EIO;
696 	if (wmem && snd_msnd_write_cfg(cfg, IREG_MEMCONTROL,
697 				       MEMTYPE_HIADDR | MEMTYPE_16BIT))
698 		return -EIO;
699 	return 0;
700 }
701 
702 static int snd_msnd_activate_logical(int cfg, int num)
703 {
704 	if (snd_msnd_write_cfg(cfg, IREG_LOGDEVICE, num))
705 		return -EIO;
706 	if (snd_msnd_write_cfg(cfg, IREG_ACTIVATE, LD_ACTIVATE))
707 		return -EIO;
708 	return 0;
709 }
710 
711 static int snd_msnd_write_cfg_logical(int cfg, int num, u16 io0,
712 				      u16 io1, u16 irq, int mem)
713 {
714 	if (snd_msnd_write_cfg(cfg, IREG_LOGDEVICE, num))
715 		return -EIO;
716 	if (snd_msnd_write_cfg_io0(cfg, num, io0))
717 		return -EIO;
718 	if (snd_msnd_write_cfg_io1(cfg, num, io1))
719 		return -EIO;
720 	if (snd_msnd_write_cfg_irq(cfg, num, irq))
721 		return -EIO;
722 	if (snd_msnd_write_cfg_mem(cfg, num, mem))
723 		return -EIO;
724 	if (snd_msnd_activate_logical(cfg, num))
725 		return -EIO;
726 	return 0;
727 }
728 
729 static int snd_msnd_pinnacle_cfg_reset(int cfg)
730 {
731 	int i;
732 
733 	/* Reset devices if told to */
734 	printk(KERN_INFO LOGNAME ": Resetting all devices\n");
735 	for (i = 0; i < 4; ++i)
736 		if (snd_msnd_write_cfg_logical(cfg, i, 0, 0, 0, 0))
737 			return -EIO;
738 
739 	return 0;
740 }
741 #endif
742 
743 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
744 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
745 
746 module_param_array(index, int, NULL, 0444);
747 MODULE_PARM_DESC(index, "Index value for msnd_pinnacle soundcard.");
748 module_param_array(id, charp, NULL, 0444);
749 MODULE_PARM_DESC(id, "ID string for msnd_pinnacle soundcard.");
750 
751 static long io[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
752 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
753 static long mem[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
754 
755 #ifndef MSND_CLASSIC
756 static long cfg[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
757 
758 /* Extra Peripheral Configuration (Default: Disable) */
759 static long ide_io0[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
760 static long ide_io1[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
761 static int ide_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
762 
763 static long joystick_io[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
764 /* If we have the digital daugherboard... */
765 static int digital[SNDRV_CARDS];
766 
767 /* Extra Peripheral Configuration */
768 static int reset[SNDRV_CARDS];
769 #endif
770 
771 static int write_ndelay[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = 1 };
772 
773 static int calibrate_signal;
774 
775 #ifdef CONFIG_PNP
776 static bool isapnp[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
777 module_param_array(isapnp, bool, NULL, 0444);
778 MODULE_PARM_DESC(isapnp, "ISA PnP detection for specified soundcard.");
779 #define has_isapnp(x) isapnp[x]
780 #else
781 #define has_isapnp(x) 0
782 #endif
783 
784 MODULE_AUTHOR("Karsten Wiese <annabellesgarden@yahoo.de>");
785 MODULE_DESCRIPTION("Turtle Beach " LONGNAME " Linux Driver");
786 MODULE_LICENSE("GPL");
787 MODULE_FIRMWARE(INITCODEFILE);
788 MODULE_FIRMWARE(PERMCODEFILE);
789 
790 module_param_hw_array(io, long, ioport, NULL, 0444);
791 MODULE_PARM_DESC(io, "IO port #");
792 module_param_hw_array(irq, int, irq, NULL, 0444);
793 module_param_hw_array(mem, long, iomem, NULL, 0444);
794 module_param_array(write_ndelay, int, NULL, 0444);
795 module_param(calibrate_signal, int, 0444);
796 #ifndef MSND_CLASSIC
797 module_param_array(digital, int, NULL, 0444);
798 module_param_hw_array(cfg, long, ioport, NULL, 0444);
799 module_param_array(reset, int, NULL, 0444);
800 module_param_hw_array(mpu_io, long, ioport, NULL, 0444);
801 module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
802 module_param_hw_array(ide_io0, long, ioport, NULL, 0444);
803 module_param_hw_array(ide_io1, long, ioport, NULL, 0444);
804 module_param_hw_array(ide_irq, int, irq, NULL, 0444);
805 module_param_hw_array(joystick_io, long, ioport, NULL, 0444);
806 #endif
807 
808 
809 static int snd_msnd_isa_match(struct device *pdev, unsigned int i)
810 {
811 	if (io[i] == SNDRV_AUTO_PORT)
812 		return 0;
813 
814 	if (irq[i] == SNDRV_AUTO_PORT || mem[i] == SNDRV_AUTO_PORT) {
815 		printk(KERN_WARNING LOGNAME ": io, irq and mem must be set\n");
816 		return 0;
817 	}
818 
819 #ifdef MSND_CLASSIC
820 	if (!(io[i] == 0x290 ||
821 	      io[i] == 0x260 ||
822 	      io[i] == 0x250 ||
823 	      io[i] == 0x240 ||
824 	      io[i] == 0x230 ||
825 	      io[i] == 0x220 ||
826 	      io[i] == 0x210 ||
827 	      io[i] == 0x3e0)) {
828 		printk(KERN_ERR LOGNAME ": \"io\" - DSP I/O base must be set "
829 			" to 0x210, 0x220, 0x230, 0x240, 0x250, 0x260, 0x290, "
830 			"or 0x3E0\n");
831 		return 0;
832 	}
833 #else
834 	if (io[i] < 0x100 || io[i] > 0x3e0 || (io[i] % 0x10) != 0) {
835 		printk(KERN_ERR LOGNAME
836 			": \"io\" - DSP I/O base must within the range 0x100 "
837 			"to 0x3E0 and must be evenly divisible by 0x10\n");
838 		return 0;
839 	}
840 #endif /* MSND_CLASSIC */
841 
842 	if (!(irq[i] == 5 ||
843 	      irq[i] == 7 ||
844 	      irq[i] == 9 ||
845 	      irq[i] == 10 ||
846 	      irq[i] == 11 ||
847 	      irq[i] == 12)) {
848 		printk(KERN_ERR LOGNAME
849 			": \"irq\" - must be set to 5, 7, 9, 10, 11 or 12\n");
850 		return 0;
851 	}
852 
853 	if (!(mem[i] == 0xb0000 ||
854 	      mem[i] == 0xc8000 ||
855 	      mem[i] == 0xd0000 ||
856 	      mem[i] == 0xd8000 ||
857 	      mem[i] == 0xe0000 ||
858 	      mem[i] == 0xe8000)) {
859 		printk(KERN_ERR LOGNAME ": \"mem\" - must be set to "
860 		       "0xb0000, 0xc8000, 0xd0000, 0xd8000, 0xe0000 or "
861 		       "0xe8000\n");
862 		return 0;
863 	}
864 
865 #ifndef MSND_CLASSIC
866 	if (cfg[i] == SNDRV_AUTO_PORT) {
867 		printk(KERN_INFO LOGNAME ": Assuming PnP mode\n");
868 	} else if (cfg[i] != 0x250 && cfg[i] != 0x260 && cfg[i] != 0x270) {
869 		printk(KERN_INFO LOGNAME
870 			": Config port must be 0x250, 0x260 or 0x270 "
871 			"(or unspecified for PnP mode)\n");
872 		return 0;
873 	}
874 #endif /* MSND_CLASSIC */
875 
876 	return 1;
877 }
878 
879 static int snd_msnd_isa_probe(struct device *pdev, unsigned int idx)
880 {
881 	int err;
882 	struct snd_card *card;
883 	struct snd_msnd *chip;
884 
885 	if (has_isapnp(idx)
886 #ifndef MSND_CLASSIC
887 	    || cfg[idx] == SNDRV_AUTO_PORT
888 #endif
889 	    ) {
890 		printk(KERN_INFO LOGNAME ": Assuming PnP mode\n");
891 		return -ENODEV;
892 	}
893 
894 	err = snd_card_new(pdev, index[idx], id[idx], THIS_MODULE,
895 			   sizeof(struct snd_msnd), &card);
896 	if (err < 0)
897 		return err;
898 
899 	chip = card->private_data;
900 	chip->card = card;
901 
902 #ifdef MSND_CLASSIC
903 	switch (irq[idx]) {
904 	case 5:
905 		chip->irqid = HPIRQ_5; break;
906 	case 7:
907 		chip->irqid = HPIRQ_7; break;
908 	case 9:
909 		chip->irqid = HPIRQ_9; break;
910 	case 10:
911 		chip->irqid = HPIRQ_10; break;
912 	case 11:
913 		chip->irqid = HPIRQ_11; break;
914 	case 12:
915 		chip->irqid = HPIRQ_12; break;
916 	}
917 
918 	switch (mem[idx]) {
919 	case 0xb0000:
920 		chip->memid = HPMEM_B000; break;
921 	case 0xc8000:
922 		chip->memid = HPMEM_C800; break;
923 	case 0xd0000:
924 		chip->memid = HPMEM_D000; break;
925 	case 0xd8000:
926 		chip->memid = HPMEM_D800; break;
927 	case 0xe0000:
928 		chip->memid = HPMEM_E000; break;
929 	case 0xe8000:
930 		chip->memid = HPMEM_E800; break;
931 	}
932 #else
933 	printk(KERN_INFO LOGNAME ": Non-PnP mode: configuring at port 0x%lx\n",
934 			cfg[idx]);
935 
936 	if (!request_region(cfg[idx], 2, "Pinnacle/Fiji Config")) {
937 		printk(KERN_ERR LOGNAME ": Config port 0x%lx conflict\n",
938 			   cfg[idx]);
939 		snd_card_free(card);
940 		return -EIO;
941 	}
942 	if (reset[idx])
943 		if (snd_msnd_pinnacle_cfg_reset(cfg[idx])) {
944 			err = -EIO;
945 			goto cfg_error;
946 		}
947 
948 	/* DSP */
949 	err = snd_msnd_write_cfg_logical(cfg[idx], 0,
950 					 io[idx], 0,
951 					 irq[idx], mem[idx]);
952 
953 	if (err)
954 		goto cfg_error;
955 
956 	/* The following are Pinnacle specific */
957 
958 	/* MPU */
959 	if (mpu_io[idx] != SNDRV_AUTO_PORT
960 	    && mpu_irq[idx] != SNDRV_AUTO_IRQ) {
961 		printk(KERN_INFO LOGNAME
962 		       ": Configuring MPU to I/O 0x%lx IRQ %d\n",
963 		       mpu_io[idx], mpu_irq[idx]);
964 		err = snd_msnd_write_cfg_logical(cfg[idx], 1,
965 						 mpu_io[idx], 0,
966 						 mpu_irq[idx], 0);
967 
968 		if (err)
969 			goto cfg_error;
970 	}
971 
972 	/* IDE */
973 	if (ide_io0[idx] != SNDRV_AUTO_PORT
974 	    && ide_io1[idx] != SNDRV_AUTO_PORT
975 	    && ide_irq[idx] != SNDRV_AUTO_IRQ) {
976 		printk(KERN_INFO LOGNAME
977 		       ": Configuring IDE to I/O 0x%lx, 0x%lx IRQ %d\n",
978 		       ide_io0[idx], ide_io1[idx], ide_irq[idx]);
979 		err = snd_msnd_write_cfg_logical(cfg[idx], 2,
980 						 ide_io0[idx], ide_io1[idx],
981 						 ide_irq[idx], 0);
982 
983 		if (err)
984 			goto cfg_error;
985 	}
986 
987 	/* Joystick */
988 	if (joystick_io[idx] != SNDRV_AUTO_PORT) {
989 		printk(KERN_INFO LOGNAME
990 		       ": Configuring joystick to I/O 0x%lx\n",
991 		       joystick_io[idx]);
992 		err = snd_msnd_write_cfg_logical(cfg[idx], 3,
993 						 joystick_io[idx], 0,
994 						 0, 0);
995 
996 		if (err)
997 			goto cfg_error;
998 	}
999 	release_region(cfg[idx], 2);
1000 
1001 #endif /* MSND_CLASSIC */
1002 
1003 	set_default_audio_parameters(chip);
1004 #ifdef MSND_CLASSIC
1005 	chip->type = msndClassic;
1006 #else
1007 	chip->type = msndPinnacle;
1008 #endif
1009 	chip->io = io[idx];
1010 	chip->irq = irq[idx];
1011 	chip->base = mem[idx];
1012 
1013 	chip->calibrate_signal = calibrate_signal ? 1 : 0;
1014 	chip->recsrc = 0;
1015 	chip->dspq_data_buff = DSPQ_DATA_BUFF;
1016 	chip->dspq_buff_size = DSPQ_BUFF_SIZE;
1017 	if (write_ndelay[idx])
1018 		clear_bit(F_DISABLE_WRITE_NDELAY, &chip->flags);
1019 	else
1020 		set_bit(F_DISABLE_WRITE_NDELAY, &chip->flags);
1021 #ifndef MSND_CLASSIC
1022 	if (digital[idx])
1023 		set_bit(F_HAVEDIGITAL, &chip->flags);
1024 #endif
1025 	spin_lock_init(&chip->lock);
1026 	err = snd_msnd_probe(card);
1027 	if (err < 0) {
1028 		printk(KERN_ERR LOGNAME ": Probe failed\n");
1029 		snd_card_free(card);
1030 		return err;
1031 	}
1032 
1033 	err = snd_msnd_attach(card);
1034 	if (err < 0) {
1035 		printk(KERN_ERR LOGNAME ": Attach failed\n");
1036 		snd_card_free(card);
1037 		return err;
1038 	}
1039 	dev_set_drvdata(pdev, card);
1040 
1041 	return 0;
1042 
1043 #ifndef MSND_CLASSIC
1044 cfg_error:
1045 	release_region(cfg[idx], 2);
1046 	snd_card_free(card);
1047 	return err;
1048 #endif
1049 }
1050 
1051 static int snd_msnd_isa_remove(struct device *pdev, unsigned int dev)
1052 {
1053 	snd_msnd_unload(dev_get_drvdata(pdev));
1054 	return 0;
1055 }
1056 
1057 static struct isa_driver snd_msnd_driver = {
1058 	.match		= snd_msnd_isa_match,
1059 	.probe		= snd_msnd_isa_probe,
1060 	.remove		= snd_msnd_isa_remove,
1061 	/* FIXME: suspend, resume */
1062 	.driver		= {
1063 		.name	= DEV_NAME
1064 	},
1065 };
1066 
1067 #ifdef CONFIG_PNP
1068 static int snd_msnd_pnp_detect(struct pnp_card_link *pcard,
1069 			       const struct pnp_card_device_id *pid)
1070 {
1071 	static int idx;
1072 	struct pnp_dev *pnp_dev;
1073 	struct pnp_dev *mpu_dev;
1074 	struct snd_card *card;
1075 	struct snd_msnd *chip;
1076 	int ret;
1077 
1078 	for ( ; idx < SNDRV_CARDS; idx++) {
1079 		if (has_isapnp(idx))
1080 			break;
1081 	}
1082 	if (idx >= SNDRV_CARDS)
1083 		return -ENODEV;
1084 
1085 	/*
1086 	 * Check that we still have room for another sound card ...
1087 	 */
1088 	pnp_dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
1089 	if (!pnp_dev)
1090 		return -ENODEV;
1091 
1092 	mpu_dev = pnp_request_card_device(pcard, pid->devs[1].id, NULL);
1093 	if (!mpu_dev)
1094 		return -ENODEV;
1095 
1096 	if (!pnp_is_active(pnp_dev) && pnp_activate_dev(pnp_dev) < 0) {
1097 		printk(KERN_INFO "msnd_pinnacle: device is inactive\n");
1098 		return -EBUSY;
1099 	}
1100 
1101 	if (!pnp_is_active(mpu_dev) && pnp_activate_dev(mpu_dev) < 0) {
1102 		printk(KERN_INFO "msnd_pinnacle: MPU device is inactive\n");
1103 		return -EBUSY;
1104 	}
1105 
1106 	/*
1107 	 * Create a new ALSA sound card entry, in anticipation
1108 	 * of detecting our hardware ...
1109 	 */
1110 	ret = snd_card_new(&pcard->card->dev,
1111 			   index[idx], id[idx], THIS_MODULE,
1112 			   sizeof(struct snd_msnd), &card);
1113 	if (ret < 0)
1114 		return ret;
1115 
1116 	chip = card->private_data;
1117 	chip->card = card;
1118 
1119 	/*
1120 	 * Read the correct parameters off the ISA PnP bus ...
1121 	 */
1122 	io[idx] = pnp_port_start(pnp_dev, 0);
1123 	irq[idx] = pnp_irq(pnp_dev, 0);
1124 	mem[idx] = pnp_mem_start(pnp_dev, 0);
1125 	mpu_io[idx] = pnp_port_start(mpu_dev, 0);
1126 	mpu_irq[idx] = pnp_irq(mpu_dev, 0);
1127 
1128 	set_default_audio_parameters(chip);
1129 #ifdef MSND_CLASSIC
1130 	chip->type = msndClassic;
1131 #else
1132 	chip->type = msndPinnacle;
1133 #endif
1134 	chip->io = io[idx];
1135 	chip->irq = irq[idx];
1136 	chip->base = mem[idx];
1137 
1138 	chip->calibrate_signal = calibrate_signal ? 1 : 0;
1139 	chip->recsrc = 0;
1140 	chip->dspq_data_buff = DSPQ_DATA_BUFF;
1141 	chip->dspq_buff_size = DSPQ_BUFF_SIZE;
1142 	if (write_ndelay[idx])
1143 		clear_bit(F_DISABLE_WRITE_NDELAY, &chip->flags);
1144 	else
1145 		set_bit(F_DISABLE_WRITE_NDELAY, &chip->flags);
1146 #ifndef MSND_CLASSIC
1147 	if (digital[idx])
1148 		set_bit(F_HAVEDIGITAL, &chip->flags);
1149 #endif
1150 	spin_lock_init(&chip->lock);
1151 	ret = snd_msnd_probe(card);
1152 	if (ret < 0) {
1153 		printk(KERN_ERR LOGNAME ": Probe failed\n");
1154 		goto _release_card;
1155 	}
1156 
1157 	ret = snd_msnd_attach(card);
1158 	if (ret < 0) {
1159 		printk(KERN_ERR LOGNAME ": Attach failed\n");
1160 		goto _release_card;
1161 	}
1162 
1163 	pnp_set_card_drvdata(pcard, card);
1164 	++idx;
1165 	return 0;
1166 
1167 _release_card:
1168 	snd_card_free(card);
1169 	return ret;
1170 }
1171 
1172 static void snd_msnd_pnp_remove(struct pnp_card_link *pcard)
1173 {
1174 	snd_msnd_unload(pnp_get_card_drvdata(pcard));
1175 	pnp_set_card_drvdata(pcard, NULL);
1176 }
1177 
1178 static int isa_registered;
1179 static int pnp_registered;
1180 
1181 static const struct pnp_card_device_id msnd_pnpids[] = {
1182 	/* Pinnacle PnP */
1183 	{ .id = "BVJ0440", .devs = { { "TBS0000" }, { "TBS0001" } } },
1184 	{ .id = "" }	/* end */
1185 };
1186 
1187 MODULE_DEVICE_TABLE(pnp_card, msnd_pnpids);
1188 
1189 static struct pnp_card_driver msnd_pnpc_driver = {
1190 	.flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
1191 	.name = "msnd_pinnacle",
1192 	.id_table = msnd_pnpids,
1193 	.probe = snd_msnd_pnp_detect,
1194 	.remove = snd_msnd_pnp_remove,
1195 };
1196 #endif /* CONFIG_PNP */
1197 
1198 static int __init snd_msnd_init(void)
1199 {
1200 	int err;
1201 
1202 	err = isa_register_driver(&snd_msnd_driver, SNDRV_CARDS);
1203 #ifdef CONFIG_PNP
1204 	if (!err)
1205 		isa_registered = 1;
1206 
1207 	err = pnp_register_card_driver(&msnd_pnpc_driver);
1208 	if (!err)
1209 		pnp_registered = 1;
1210 
1211 	if (isa_registered)
1212 		err = 0;
1213 #endif
1214 	return err;
1215 }
1216 
1217 static void __exit snd_msnd_exit(void)
1218 {
1219 #ifdef CONFIG_PNP
1220 	if (pnp_registered)
1221 		pnp_unregister_card_driver(&msnd_pnpc_driver);
1222 	if (isa_registered)
1223 #endif
1224 		isa_unregister_driver(&snd_msnd_driver);
1225 }
1226 
1227 module_init(snd_msnd_init);
1228 module_exit(snd_msnd_exit);
1229 
1230