1// SPDX-License-Identifier: GPL-2.0-or-later 2/* 3 * ALSA card-level driver for Turtle Beach Wavefront cards 4 * (Maui,Tropez,Tropez+) 5 * 6 * Copyright (c) 1997-1999 by Paul Barton-Davis <pbd@op.net> 7 */ 8 9#include <linux/init.h> 10#include <linux/interrupt.h> 11#include <linux/err.h> 12#include <linux/isa.h> 13#include <linux/pnp.h> 14#include <linux/module.h> 15#include <sound/core.h> 16#include <sound/initval.h> 17#include <sound/opl3.h> 18#include <sound/wss.h> 19#include <sound/snd_wavefront.h> 20 21MODULE_AUTHOR("Paul Barton-Davis <pbd@op.net>"); 22MODULE_DESCRIPTION("Turtle Beach Wavefront"); 23MODULE_LICENSE("GPL"); 24 25static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ 26static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 27static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */ 28#ifdef CONFIG_PNP 29static bool isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1}; 30#endif 31static long cs4232_pcm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ 32static int cs4232_pcm_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */ 33static long cs4232_mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ 34static int cs4232_mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 9,11,12,15 */ 35static long ics2115_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ 36static int ics2115_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 2,9,11,12,15 */ 37static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */ 38static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */ 39static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */ 40static bool use_cs4232_midi[SNDRV_CARDS]; 41 42module_param_array(index, int, NULL, 0444); 43MODULE_PARM_DESC(index, "Index value for WaveFront soundcard."); 44module_param_array(id, charp, NULL, 0444); 45MODULE_PARM_DESC(id, "ID string for WaveFront soundcard."); 46module_param_array(enable, bool, NULL, 0444); 47MODULE_PARM_DESC(enable, "Enable WaveFront soundcard."); 48#ifdef CONFIG_PNP 49module_param_array(isapnp, bool, NULL, 0444); 50MODULE_PARM_DESC(isapnp, "ISA PnP detection for WaveFront soundcards."); 51#endif 52module_param_hw_array(cs4232_pcm_port, long, ioport, NULL, 0444); 53MODULE_PARM_DESC(cs4232_pcm_port, "Port # for CS4232 PCM interface."); 54module_param_hw_array(cs4232_pcm_irq, int, irq, NULL, 0444); 55MODULE_PARM_DESC(cs4232_pcm_irq, "IRQ # for CS4232 PCM interface."); 56module_param_hw_array(dma1, int, dma, NULL, 0444); 57MODULE_PARM_DESC(dma1, "DMA1 # for CS4232 PCM interface."); 58module_param_hw_array(dma2, int, dma, NULL, 0444); 59MODULE_PARM_DESC(dma2, "DMA2 # for CS4232 PCM interface."); 60module_param_hw_array(cs4232_mpu_port, long, ioport, NULL, 0444); 61MODULE_PARM_DESC(cs4232_mpu_port, "port # for CS4232 MPU-401 interface."); 62module_param_hw_array(cs4232_mpu_irq, int, irq, NULL, 0444); 63MODULE_PARM_DESC(cs4232_mpu_irq, "IRQ # for CS4232 MPU-401 interface."); 64module_param_hw_array(ics2115_irq, int, irq, NULL, 0444); 65MODULE_PARM_DESC(ics2115_irq, "IRQ # for ICS2115."); 66module_param_hw_array(ics2115_port, long, ioport, NULL, 0444); 67MODULE_PARM_DESC(ics2115_port, "Port # for ICS2115."); 68module_param_hw_array(fm_port, long, ioport, NULL, 0444); 69MODULE_PARM_DESC(fm_port, "FM port #."); 70module_param_array(use_cs4232_midi, bool, NULL, 0444); 71MODULE_PARM_DESC(use_cs4232_midi, "Use CS4232 MPU-401 interface (inaccessibly located inside your computer)"); 72 73#ifdef CONFIG_PNP 74static int isa_registered; 75static int pnp_registered; 76 77static const struct pnp_card_device_id snd_wavefront_pnpids[] = { 78 /* Tropez */ 79 { .id = "CSC7532", .devs = { { "CSC0000" }, { "CSC0010" }, { "PnPb006" }, { "CSC0004" } } }, 80 /* Tropez+ */ 81 { .id = "CSC7632", .devs = { { "CSC0000" }, { "CSC0010" }, { "PnPb006" }, { "CSC0004" } } }, 82 { .id = "" } 83}; 84 85MODULE_DEVICE_TABLE(pnp_card, snd_wavefront_pnpids); 86 87static int 88snd_wavefront_pnp (int dev, snd_wavefront_card_t *acard, struct pnp_card_link *card, 89 const struct pnp_card_device_id *id) 90{ 91 struct pnp_dev *pdev; 92 int err; 93 94 /* Check for each logical device. */ 95 96 /* CS4232 chip (aka "windows sound system") is logical device 0 */ 97 98 acard->wss = pnp_request_card_device(card, id->devs[0].id, NULL); 99 if (acard->wss == NULL) 100 return -EBUSY; 101 102 /* there is a game port at logical device 1, but we ignore it completely */ 103 104 /* the control interface is logical device 2, but we ignore it 105 completely. in fact, nobody even seems to know what it 106 does. 107 */ 108 109 /* Only configure the CS4232 MIDI interface if its been 110 specifically requested. It is logical device 3. 111 */ 112 113 if (use_cs4232_midi[dev]) { 114 acard->mpu = pnp_request_card_device(card, id->devs[2].id, NULL); 115 if (acard->mpu == NULL) 116 return -EBUSY; 117 } 118 119 /* The ICS2115 synth is logical device 4 */ 120 121 acard->synth = pnp_request_card_device(card, id->devs[3].id, NULL); 122 if (acard->synth == NULL) 123 return -EBUSY; 124 125 /* PCM/FM initialization */ 126 127 pdev = acard->wss; 128 129 /* An interesting note from the Tropez+ FAQ: 130 131 Q. [Ports] Why is the base address of the WSS I/O ports off by 4? 132 133 A. WSS I/O requires a block of 8 I/O addresses ("ports"). Of these, the first 134 4 are used to identify and configure the board. With the advent of PnP, 135 these first 4 addresses have become obsolete, and software applications 136 only use the last 4 addresses to control the codec chip. Therefore, the 137 base address setting "skips past" the 4 unused addresses. 138 139 */ 140 141 err = pnp_activate_dev(pdev); 142 if (err < 0) { 143 snd_printk(KERN_ERR "PnP WSS pnp configure failure\n"); 144 return err; 145 } 146 147 cs4232_pcm_port[dev] = pnp_port_start(pdev, 0); 148 fm_port[dev] = pnp_port_start(pdev, 1); 149 dma1[dev] = pnp_dma(pdev, 0); 150 dma2[dev] = pnp_dma(pdev, 1); 151 cs4232_pcm_irq[dev] = pnp_irq(pdev, 0); 152 153 /* Synth initialization */ 154 155 pdev = acard->synth; 156 157 err = pnp_activate_dev(pdev); 158 if (err < 0) { 159 snd_printk(KERN_ERR "PnP ICS2115 pnp configure failure\n"); 160 return err; 161 } 162 163 ics2115_port[dev] = pnp_port_start(pdev, 0); 164 ics2115_irq[dev] = pnp_irq(pdev, 0); 165 166 /* CS4232 MPU initialization. Configure this only if 167 explicitly requested, since its physically inaccessible and 168 consumes another IRQ. 169 */ 170 171 if (use_cs4232_midi[dev]) { 172 173 pdev = acard->mpu; 174 175 err = pnp_activate_dev(pdev); 176 if (err < 0) { 177 snd_printk(KERN_ERR "PnP MPU401 pnp configure failure\n"); 178 cs4232_mpu_port[dev] = SNDRV_AUTO_PORT; 179 } else { 180 cs4232_mpu_port[dev] = pnp_port_start(pdev, 0); 181 cs4232_mpu_irq[dev] = pnp_irq(pdev, 0); 182 } 183 184 snd_printk (KERN_INFO "CS4232 MPU: port=0x%lx, irq=%i\n", 185 cs4232_mpu_port[dev], 186 cs4232_mpu_irq[dev]); 187 } 188 189 snd_printdd ("CS4232: pcm port=0x%lx, fm port=0x%lx, dma1=%i, dma2=%i, irq=%i\nICS2115: port=0x%lx, irq=%i\n", 190 cs4232_pcm_port[dev], 191 fm_port[dev], 192 dma1[dev], 193 dma2[dev], 194 cs4232_pcm_irq[dev], 195 ics2115_port[dev], 196 ics2115_irq[dev]); 197 198 return 0; 199} 200 201#endif /* CONFIG_PNP */ 202 203static irqreturn_t snd_wavefront_ics2115_interrupt(int irq, void *dev_id) 204{ 205 snd_wavefront_card_t *acard; 206 207 acard = (snd_wavefront_card_t *) dev_id; 208 209 if (acard == NULL) 210 return IRQ_NONE; 211 212 if (acard->wavefront.interrupts_are_midi) { 213 snd_wavefront_midi_interrupt (acard); 214 } else { 215 snd_wavefront_internal_interrupt (acard); 216 } 217 return IRQ_HANDLED; 218} 219 220static struct snd_hwdep *snd_wavefront_new_synth(struct snd_card *card, 221 int hw_dev, 222 snd_wavefront_card_t *acard) 223{ 224 struct snd_hwdep *wavefront_synth; 225 226 if (snd_wavefront_detect (acard) < 0) { 227 return NULL; 228 } 229 230 if (snd_wavefront_start (&acard->wavefront) < 0) { 231 return NULL; 232 } 233 234 if (snd_hwdep_new(card, "WaveFront", hw_dev, &wavefront_synth) < 0) 235 return NULL; 236 strcpy (wavefront_synth->name, 237 "WaveFront (ICS2115) wavetable synthesizer"); 238 wavefront_synth->ops.open = snd_wavefront_synth_open; 239 wavefront_synth->ops.release = snd_wavefront_synth_release; 240 wavefront_synth->ops.ioctl = snd_wavefront_synth_ioctl; 241 242 return wavefront_synth; 243} 244 245static struct snd_hwdep *snd_wavefront_new_fx(struct snd_card *card, 246 int hw_dev, 247 snd_wavefront_card_t *acard, 248 unsigned long port) 249 250{ 251 struct snd_hwdep *fx_processor; 252 253 if (snd_wavefront_fx_start (&acard->wavefront)) { 254 snd_printk (KERN_ERR "cannot initialize YSS225 FX processor"); 255 return NULL; 256 } 257 258 if (snd_hwdep_new (card, "YSS225", hw_dev, &fx_processor) < 0) 259 return NULL; 260 sprintf (fx_processor->name, "YSS225 FX Processor at 0x%lx", port); 261 fx_processor->ops.open = snd_wavefront_fx_open; 262 fx_processor->ops.release = snd_wavefront_fx_release; 263 fx_processor->ops.ioctl = snd_wavefront_fx_ioctl; 264 265 return fx_processor; 266} 267 268static snd_wavefront_mpu_id internal_id = internal_mpu; 269static snd_wavefront_mpu_id external_id = external_mpu; 270 271static struct snd_rawmidi *snd_wavefront_new_midi(struct snd_card *card, 272 int midi_dev, 273 snd_wavefront_card_t *acard, 274 unsigned long port, 275 snd_wavefront_mpu_id mpu) 276 277{ 278 struct snd_rawmidi *rmidi; 279 static int first = 1; 280 281 if (first) { 282 first = 0; 283 acard->wavefront.midi.base = port; 284 if (snd_wavefront_midi_start (acard)) { 285 snd_printk (KERN_ERR "cannot initialize MIDI interface\n"); 286 return NULL; 287 } 288 } 289 290 if (snd_rawmidi_new (card, "WaveFront MIDI", midi_dev, 1, 1, &rmidi) < 0) 291 return NULL; 292 293 if (mpu == internal_mpu) { 294 strcpy(rmidi->name, "WaveFront MIDI (Internal)"); 295 rmidi->private_data = &internal_id; 296 } else { 297 strcpy(rmidi->name, "WaveFront MIDI (External)"); 298 rmidi->private_data = &external_id; 299 } 300 301 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_wavefront_midi_output); 302 snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_wavefront_midi_input); 303 304 rmidi->info_flags |= SNDRV_RAWMIDI_INFO_OUTPUT | 305 SNDRV_RAWMIDI_INFO_INPUT | 306 SNDRV_RAWMIDI_INFO_DUPLEX; 307 308 return rmidi; 309} 310 311static int snd_wavefront_card_new(struct device *pdev, int dev, 312 struct snd_card **cardp) 313{ 314 struct snd_card *card; 315 snd_wavefront_card_t *acard; 316 int err; 317 318 err = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE, 319 sizeof(snd_wavefront_card_t), &card); 320 if (err < 0) 321 return err; 322 323 acard = card->private_data; 324 acard->wavefront.irq = -1; 325 spin_lock_init(&acard->wavefront.irq_lock); 326 init_waitqueue_head(&acard->wavefront.interrupt_sleeper); 327 spin_lock_init(&acard->wavefront.midi.open); 328 spin_lock_init(&acard->wavefront.midi.virtual); 329 acard->wavefront.card = card; 330 331 *cardp = card; 332 return 0; 333} 334 335static int 336snd_wavefront_probe (struct snd_card *card, int dev) 337{ 338 snd_wavefront_card_t *acard = card->private_data; 339 struct snd_wss *chip; 340 struct snd_hwdep *wavefront_synth; 341 struct snd_rawmidi *ics2115_internal_rmidi = NULL; 342 struct snd_rawmidi *ics2115_external_rmidi = NULL; 343 struct snd_hwdep *fx_processor; 344 int hw_dev = 0, midi_dev = 0, err; 345 346 /* --------- PCM --------------- */ 347 348 err = snd_wss_create(card, cs4232_pcm_port[dev], -1, 349 cs4232_pcm_irq[dev], dma1[dev], dma2[dev], 350 WSS_HW_DETECT, 0, &chip); 351 if (err < 0) { 352 snd_printk(KERN_ERR "can't allocate WSS device\n"); 353 return err; 354 } 355 356 err = snd_wss_pcm(chip, 0); 357 if (err < 0) 358 return err; 359 360 err = snd_wss_timer(chip, 0); 361 if (err < 0) 362 return err; 363 364 /* ---------- OPL3 synth --------- */ 365 366 if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) { 367 struct snd_opl3 *opl3; 368 369 err = snd_opl3_create(card, fm_port[dev], fm_port[dev] + 2, 370 OPL3_HW_OPL3_CS, 0, &opl3); 371 if (err < 0) { 372 snd_printk (KERN_ERR "can't allocate or detect OPL3 synth\n"); 373 return err; 374 } 375 376 err = snd_opl3_hwdep_new(opl3, hw_dev, 1, NULL); 377 if (err < 0) 378 return err; 379 hw_dev++; 380 } 381 382 /* ------- ICS2115 Wavetable synth ------- */ 383 384 acard->wavefront.res_base = 385 devm_request_region(card->dev, ics2115_port[dev], 16, 386 "ICS2115"); 387 if (acard->wavefront.res_base == NULL) { 388 snd_printk(KERN_ERR "unable to grab ICS2115 i/o region 0x%lx-0x%lx\n", 389 ics2115_port[dev], ics2115_port[dev] + 16 - 1); 390 return -EBUSY; 391 } 392 if (devm_request_irq(card->dev, ics2115_irq[dev], 393 snd_wavefront_ics2115_interrupt, 394 0, "ICS2115", acard)) { 395 snd_printk(KERN_ERR "unable to use ICS2115 IRQ %d\n", ics2115_irq[dev]); 396 return -EBUSY; 397 } 398 399 acard->wavefront.irq = ics2115_irq[dev]; 400 card->sync_irq = acard->wavefront.irq; 401 acard->wavefront.base = ics2115_port[dev]; 402 403 wavefront_synth = snd_wavefront_new_synth(card, hw_dev, acard); 404 if (wavefront_synth == NULL) { 405 snd_printk (KERN_ERR "can't create WaveFront synth device\n"); 406 return -ENOMEM; 407 } 408 409 strcpy (wavefront_synth->name, "ICS2115 Wavetable MIDI Synthesizer"); 410 wavefront_synth->iface = SNDRV_HWDEP_IFACE_ICS2115; 411 hw_dev++; 412 413 /* --------- Mixer ------------ */ 414 415 err = snd_wss_mixer(chip); 416 if (err < 0) { 417 snd_printk (KERN_ERR "can't allocate mixer device\n"); 418 return err; 419 } 420 421 /* -------- CS4232 MPU-401 interface -------- */ 422 423 if (cs4232_mpu_port[dev] > 0 && cs4232_mpu_port[dev] != SNDRV_AUTO_PORT) { 424 err = snd_mpu401_uart_new(card, midi_dev, MPU401_HW_CS4232, 425 cs4232_mpu_port[dev], 0, 426 cs4232_mpu_irq[dev], NULL); 427 if (err < 0) { 428 snd_printk (KERN_ERR "can't allocate CS4232 MPU-401 device\n"); 429 return err; 430 } 431 midi_dev++; 432 } 433 434 /* ------ ICS2115 internal MIDI ------------ */ 435 436 if (ics2115_port[dev] > 0 && ics2115_port[dev] != SNDRV_AUTO_PORT) { 437 ics2115_internal_rmidi = 438 snd_wavefront_new_midi (card, 439 midi_dev, 440 acard, 441 ics2115_port[dev], 442 internal_mpu); 443 if (ics2115_internal_rmidi == NULL) { 444 snd_printk (KERN_ERR "can't setup ICS2115 internal MIDI device\n"); 445 return -ENOMEM; 446 } 447 midi_dev++; 448 } 449 450 /* ------ ICS2115 external MIDI ------------ */ 451 452 if (ics2115_port[dev] > 0 && ics2115_port[dev] != SNDRV_AUTO_PORT) { 453 ics2115_external_rmidi = 454 snd_wavefront_new_midi (card, 455 midi_dev, 456 acard, 457 ics2115_port[dev], 458 external_mpu); 459 if (ics2115_external_rmidi == NULL) { 460 snd_printk (KERN_ERR "can't setup ICS2115 external MIDI device\n"); 461 return -ENOMEM; 462 } 463 midi_dev++; 464 } 465 466 /* FX processor for Tropez+ */ 467 468 if (acard->wavefront.has_fx) { 469 fx_processor = snd_wavefront_new_fx (card, 470 hw_dev, 471 acard, 472 ics2115_port[dev]); 473 if (fx_processor == NULL) { 474 snd_printk (KERN_ERR "can't setup FX device\n"); 475 return -ENOMEM; 476 } 477 478 hw_dev++; 479 480 strcpy(card->driver, "Tropez+"); 481 strcpy(card->shortname, "Turtle Beach Tropez+"); 482 } else { 483 /* Need a way to distinguish between Maui and Tropez */ 484 strcpy(card->driver, "WaveFront"); 485 strcpy(card->shortname, "Turtle Beach WaveFront"); 486 } 487 488 /* ----- Register the card --------- */ 489 490 /* Not safe to include "Turtle Beach" in longname, due to 491 length restrictions 492 */ 493 494 sprintf(card->longname, "%s PCM 0x%lx irq %d dma %d", 495 card->driver, 496 chip->port, 497 cs4232_pcm_irq[dev], 498 dma1[dev]); 499 500 if (dma2[dev] >= 0 && dma2[dev] < 8) 501 sprintf(card->longname + strlen(card->longname), "&%d", dma2[dev]); 502 503 if (cs4232_mpu_port[dev] > 0 && cs4232_mpu_port[dev] != SNDRV_AUTO_PORT) { 504 sprintf (card->longname + strlen (card->longname), 505 " MPU-401 0x%lx irq %d", 506 cs4232_mpu_port[dev], 507 cs4232_mpu_irq[dev]); 508 } 509 510 sprintf (card->longname + strlen (card->longname), 511 " SYNTH 0x%lx irq %d", 512 ics2115_port[dev], 513 ics2115_irq[dev]); 514 515 return snd_card_register(card); 516} 517 518static int snd_wavefront_isa_match(struct device *pdev, 519 unsigned int dev) 520{ 521 if (!enable[dev]) 522 return 0; 523#ifdef CONFIG_PNP 524 if (isapnp[dev]) 525 return 0; 526#endif 527 if (cs4232_pcm_port[dev] == SNDRV_AUTO_PORT) { 528 snd_printk(KERN_ERR "specify CS4232 port\n"); 529 return 0; 530 } 531 if (ics2115_port[dev] == SNDRV_AUTO_PORT) { 532 snd_printk(KERN_ERR "specify ICS2115 port\n"); 533 return 0; 534 } 535 return 1; 536} 537 538static int snd_wavefront_isa_probe(struct device *pdev, 539 unsigned int dev) 540{ 541 struct snd_card *card; 542 int err; 543 544 err = snd_wavefront_card_new(pdev, dev, &card); 545 if (err < 0) 546 return err; 547 err = snd_wavefront_probe(card, dev); 548 if (err < 0) 549 return err; 550 551 dev_set_drvdata(pdev, card); 552 return 0; 553} 554 555#define DEV_NAME "wavefront" 556 557static struct isa_driver snd_wavefront_driver = { 558 .match = snd_wavefront_isa_match, 559 .probe = snd_wavefront_isa_probe, 560 /* FIXME: suspend, resume */ 561 .driver = { 562 .name = DEV_NAME 563 }, 564}; 565 566 567#ifdef CONFIG_PNP 568static int snd_wavefront_pnp_detect(struct pnp_card_link *pcard, 569 const struct pnp_card_device_id *pid) 570{ 571 static int dev; 572 struct snd_card *card; 573 int res; 574 575 for ( ; dev < SNDRV_CARDS; dev++) { 576 if (enable[dev] && isapnp[dev]) 577 break; 578 } 579 if (dev >= SNDRV_CARDS) 580 return -ENODEV; 581 582 res = snd_wavefront_card_new(&pcard->card->dev, dev, &card); 583 if (res < 0) 584 return res; 585 586 if (snd_wavefront_pnp (dev, card->private_data, pcard, pid) < 0) { 587 if (cs4232_pcm_port[dev] == SNDRV_AUTO_PORT) { 588 snd_printk (KERN_ERR "isapnp detection failed\n"); 589 return -ENODEV; 590 } 591 } 592 593 res = snd_wavefront_probe(card, dev); 594 if (res < 0) 595 return res; 596 597 pnp_set_card_drvdata(pcard, card); 598 dev++; 599 return 0; 600} 601 602static struct pnp_card_driver wavefront_pnpc_driver = { 603 .flags = PNP_DRIVER_RES_DISABLE, 604 .name = "wavefront", 605 .id_table = snd_wavefront_pnpids, 606 .probe = snd_wavefront_pnp_detect, 607 /* FIXME: suspend,resume */ 608}; 609 610#endif /* CONFIG_PNP */ 611 612static int __init alsa_card_wavefront_init(void) 613{ 614 int err; 615 616 err = isa_register_driver(&snd_wavefront_driver, SNDRV_CARDS); 617#ifdef CONFIG_PNP 618 if (!err) 619 isa_registered = 1; 620 621 err = pnp_register_card_driver(&wavefront_pnpc_driver); 622 if (!err) 623 pnp_registered = 1; 624 625 if (isa_registered) 626 err = 0; 627#endif 628 return err; 629} 630 631static void __exit alsa_card_wavefront_exit(void) 632{ 633#ifdef CONFIG_PNP 634 if (pnp_registered) 635 pnp_unregister_card_driver(&wavefront_pnpc_driver); 636 if (isa_registered) 637#endif 638 isa_unregister_driver(&snd_wavefront_driver); 639} 640 641module_init(alsa_card_wavefront_init) 642module_exit(alsa_card_wavefront_exit) 643