sound/isa/sscape.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *   Low-level ALSA driver for the ENSONIQ SoundScape
   4  *   Copyright (c) by Chris Rankin
   5  *
   6  *   This driver was written in part using information obtained from
   7  *   the OSS/Free SoundScape driver, written by Hannu Savolainen.
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/err.h>
  12 #include <linux/io.h>
  13 #include <linux/isa.h>
  14 #include <linux/delay.h>
  15 #include <linux/firmware.h>
  16 #include <linux/pnp.h>
  17 #include <linux/spinlock.h>
  18 #include <linux/module.h>
  19 #include <asm/dma.h>
  20 #include <sound/core.h>
  21 #include <sound/wss.h>
  22 #include <sound/mpu401.h>
  23 #include <sound/initval.h>
  24
  25
  26 MODULE_AUTHOR("Chris Rankin");
  27 MODULE_DESCRIPTION("ENSONIQ SoundScape driver");
  28 MODULE_LICENSE("GPL");
  29 /*(DEBLOBBED)*/
  30
  31 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  32 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  33 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  34 static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  35 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  36 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  37 static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  38 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  39 static bool joystick[SNDRV_CARDS];
  40
  41 module_param_array(index, int, NULL, 0444);
  42 MODULE_PARM_DESC(index, "Index number for SoundScape soundcard");
  43
  44 module_param_array(id, charp, NULL, 0444);
  45 MODULE_PARM_DESC(id, "Description for SoundScape card");
  46
  47 module_param_hw_array(port, long, ioport, NULL, 0444);
  48 MODULE_PARM_DESC(port, "Port # for SoundScape driver.");
  49
  50 module_param_hw_array(wss_port, long, ioport, NULL, 0444);
  51 MODULE_PARM_DESC(wss_port, "WSS Port # for SoundScape driver.");
  52
  53 module_param_hw_array(irq, int, irq, NULL, 0444);
  54 MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver.");
  55
  56 module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
  57 MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver.");
  58
  59 module_param_hw_array(dma, int, dma, NULL, 0444);
  60 MODULE_PARM_DESC(dma, "DMA # for SoundScape driver.");
  61
  62 module_param_hw_array(dma2, int, dma, NULL, 0444);
  63 MODULE_PARM_DESC(dma2, "DMA2 # for SoundScape driver.");
  64
  65 module_param_array(joystick, bool, NULL, 0444);
  66 MODULE_PARM_DESC(joystick, "Enable gameport.");
  67
  68 #ifdef CONFIG_PNP
  69 static int isa_registered;
  70 static int pnp_registered;
  71
  72 static const struct pnp_card_device_id sscape_pnpids[] = {
  73         { .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */
  74         { .id = "ENS4081", .devs = { { "ENS1011" } } }, /* VIVO90 */
  75         { .id = "" }    /* end */
  76 };
  77
  78 MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids);
  79 #endif
  80
  81
  82 #define HOST_CTRL_IO(i)  ((i) + 2)
  83 #define HOST_DATA_IO(i)  ((i) + 3)
  84 #define ODIE_ADDR_IO(i)  ((i) + 4)
  85 #define ODIE_DATA_IO(i)  ((i) + 5)
  86 #define CODEC_IO(i)      ((i) + 8)
  87
  88 #define IC_ODIE  1
  89 #define IC_OPUS  2
  90
  91 #define RX_READY 0x01
  92 #define TX_READY 0x02
  93
  94 #define CMD_ACK                 0x80
  95 #define CMD_SET_MIDI_VOL        0x84
  96 #define CMD_GET_MIDI_VOL        0x85
  97 #define CMD_XXX_MIDI_VOL        0x86
  98 #define CMD_SET_EXTMIDI         0x8a
  99 #define CMD_GET_EXTMIDI         0x8b
 100 #define CMD_SET_MT32            0x8c
 101 #define CMD_GET_MT32            0x8d
 102
 103 enum GA_REG {
 104         GA_INTSTAT_REG = 0,
 105         GA_INTENA_REG,
 106         GA_DMAA_REG,
 107         GA_DMAB_REG,
 108         GA_INTCFG_REG,
 109         GA_DMACFG_REG,
 110         GA_CDCFG_REG,
 111         GA_SMCFGA_REG,
 112         GA_SMCFGB_REG,
 113         GA_HMCTL_REG
 114 };
 115
 116 #define DMA_8BIT  0x80
 117
 118
 119 enum card_type {
 120         MEDIA_FX,       /* Sequoia S-1000 */
 121         SSCAPE,         /* Sequoia S-2000 */
 122         SSCAPE_PNP,
 123         SSCAPE_VIVO,
 124 };
 125
 126 struct soundscape {
 127         spinlock_t lock;
 128         unsigned io_base;
 129         int ic_type;
 130         enum card_type type;
 131         struct resource *io_res;
 132         struct resource *wss_res;
 133         struct snd_wss *chip;
 134
 135         unsigned char midi_vol;
 136 };
 137
 138 #define INVALID_IRQ  ((unsigned)-1)
 139
 140
 141 static inline struct soundscape *get_card_soundscape(struct snd_card *c)
 142 {
 143         return (struct soundscape *) (c->private_data);
 144 }
 145
 146 /*
 147  * Allocates some kernel memory that we can use for DMA.
 148  * I think this means that the memory has to map to
 149  * contiguous pages of physical memory.
 150  */
 151 static struct snd_dma_buffer *get_dmabuf(struct soundscape *s,
 152                                          struct snd_dma_buffer *buf,
 153                                          unsigned long size)
 154 {
 155         if (buf) {
 156                 if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV,
 157                                                  s->chip->card->dev,
 158                                                  size, buf) < 0) {
 159                         snd_printk(KERN_ERR "sscape: Failed to allocate "
 160                                             "%lu bytes for DMA\n",
 161                                             size);
 162                         return NULL;
 163                 }
 164         }
 165
 166         return buf;
 167 }
 168
 169 /*
 170  * Release the DMA-able kernel memory ...
 171  */
 172 static void free_dmabuf(struct snd_dma_buffer *buf)
 173 {
 174         if (buf && buf->area)
 175                 snd_dma_free_pages(buf);
 176 }
 177
 178 /*
 179  * This function writes to the SoundScape's control registers,
 180  * but doesn't do any locking. It's up to the caller to do that.
 181  * This is why this function is "unsafe" ...
 182  */
 183 static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg,
 184                                        unsigned char val)
 185 {
 186         outb(reg, ODIE_ADDR_IO(io_base));
 187         outb(val, ODIE_DATA_IO(io_base));
 188 }
 189
 190 /*
 191  * Write to the SoundScape's control registers, and do the
 192  * necessary locking ...
 193  */
 194 static void sscape_write(struct soundscape *s, enum GA_REG reg,
 195                          unsigned char val)
 196 {
 197         unsigned long flags;
 198
 199         spin_lock_irqsave(&s->lock, flags);
 200         sscape_write_unsafe(s->io_base, reg, val);
 201         spin_unlock_irqrestore(&s->lock, flags);
 202 }
 203
 204 /*
 205  * Read from the SoundScape's control registers, but leave any
 206  * locking to the caller. This is why the function is "unsafe" ...
 207  */
 208 static inline unsigned char sscape_read_unsafe(unsigned io_base,
 209                                                enum GA_REG reg)
 210 {
 211         outb(reg, ODIE_ADDR_IO(io_base));
 212         return inb(ODIE_DATA_IO(io_base));
 213 }
 214
 215 /*
 216  * Puts the SoundScape into "host" mode, as compared to "MIDI" mode
 217  */
 218 static inline void set_host_mode_unsafe(unsigned io_base)
 219 {
 220         outb(0x0, HOST_CTRL_IO(io_base));
 221 }
 222
 223 /*
 224  * Puts the SoundScape into "MIDI" mode, as compared to "host" mode
 225  */
 226 static inline void set_midi_mode_unsafe(unsigned io_base)
 227 {
 228         outb(0x3, HOST_CTRL_IO(io_base));
 229 }
 230
 231 /*
 232  * Read the SoundScape's host-mode control register, but leave
 233  * any locking issues to the caller ...
 234  */
 235 static inline int host_read_unsafe(unsigned io_base)
 236 {
 237         int data = -1;
 238         if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0)
 239                 data = inb(HOST_DATA_IO(io_base));
 240
 241         return data;
 242 }
 243
 244 /*
 245  * Read the SoundScape's host-mode control register, performing
 246  * a limited amount of busy-waiting if the register isn't ready.
 247  * Also leaves all locking-issues to the caller ...
 248  */
 249 static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout)
 250 {
 251         int data;
 252
 253         while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) {
 254                 udelay(100);
 255                 --timeout;
 256         } /* while */
 257
 258         return data;
 259 }
 260
 261 /*
 262  * Write to the SoundScape's host-mode control registers, but
 263  * leave any locking issues to the caller ...
 264  */
 265 static inline int host_write_unsafe(unsigned io_base, unsigned char data)
 266 {
 267         if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) {
 268                 outb(data, HOST_DATA_IO(io_base));
 269                 return 1;
 270         }
 271
 272         return 0;
 273 }
 274
 275 /*
 276  * Write to the SoundScape's host-mode control registers, performing
 277  * a limited amount of busy-waiting if the register isn't ready.
 278  * Also leaves all locking-issues to the caller ...
 279  */
 280 static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data,
 281                                   unsigned timeout)
 282 {
 283         int err;
 284
 285         while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) {
 286                 udelay(100);
 287                 --timeout;
 288         } /* while */
 289
 290         return err;
 291 }
 292
 293
 294 /*
 295  * Check that the MIDI subsystem is operational. If it isn't,
 296  * then we will hang the computer if we try to use it ...
 297  *
 298  * NOTE: This check is based upon observation, not documentation.
 299  */
 300 static inline int verify_mpu401(const struct snd_mpu401 *mpu)
 301 {
 302         return ((inb(MPU401C(mpu)) & 0xc0) == 0x80);
 303 }
 304
 305 /*
 306  * This is apparently the standard way to initialise an MPU-401
 307  */
 308 static inline void initialise_mpu401(const struct snd_mpu401 *mpu)
 309 {
 310         outb(0, MPU401D(mpu));
 311 }
 312
 313 /*
 314  * Tell the SoundScape to activate the AD1845 chip (I think).
 315  * The AD1845 detection fails if we *don't* do this, so I
 316  * think that this is a good idea ...
 317  */
 318 static void activate_ad1845_unsafe(unsigned io_base)
 319 {
 320         unsigned char val = sscape_read_unsafe(io_base, GA_HMCTL_REG);
 321         sscape_write_unsafe(io_base, GA_HMCTL_REG, (val & 0xcf) | 0x10);
 322         sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80);
 323 }
 324
 325 /*
 326  * Do the necessary ALSA-level cleanup to deallocate our driver ...
 327  */
 328 static void soundscape_free(struct snd_card *c)
 329 {
 330         struct soundscape *sscape = get_card_soundscape(c);
 331         release_and_free_resource(sscape->io_res);
 332         release_and_free_resource(sscape->wss_res);
 333         free_dma(sscape->chip->dma1);
 334 }
 335
 336 /*
 337  * Tell the SoundScape to begin a DMA transfer using the given channel.
 338  * All locking issues are left to the caller.
 339  */
 340 static void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg)
 341 {
 342         sscape_write_unsafe(io_base, reg,
 343                             sscape_read_unsafe(io_base, reg) | 0x01);
 344         sscape_write_unsafe(io_base, reg,
 345                             sscape_read_unsafe(io_base, reg) & 0xfe);
 346 }
 347
 348 /*
 349  * Wait for a DMA transfer to complete. This is a "limited busy-wait",
 350  * and all locking issues are left to the caller.
 351  */
 352 static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg,
 353                                   unsigned timeout)
 354 {
 355         while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) {
 356                 udelay(100);
 357                 --timeout;
 358         } /* while */
 359
 360         return sscape_read_unsafe(io_base, reg) & 0x01;
 361 }
 362
 363 /*
 364  * Wait for the On-Board Processor to return its start-up
 365  * acknowledgement sequence. This wait is too long for
 366  * us to perform "busy-waiting", and so we must sleep.
 367  * This in turn means that we must not be holding any
 368  * spinlocks when we call this function.
 369  */
 370 static int obp_startup_ack(struct soundscape *s, unsigned timeout)
 371 {
 372         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 373
 374         do {
 375                 unsigned long flags;
 376                 int x;
 377
 378                 spin_lock_irqsave(&s->lock, flags);
 379                 x = host_read_unsafe(s->io_base);
 380                 spin_unlock_irqrestore(&s->lock, flags);
 381                 if (x == 0xfe || x == 0xff)
 382                         return 1;
 383
 384                 msleep(10);
 385         } while (time_before(jiffies, end_time));
 386
 387         return 0;
 388 }
 389
 390 /*
 391  * Wait for the host to return its start-up acknowledgement
 392  * sequence. This wait is too long for us to perform
 393  * "busy-waiting", and so we must sleep. This in turn means
 394  * that we must not be holding any spinlocks when we call
 395  * this function.
 396  */
 397 static int host_startup_ack(struct soundscape *s, unsigned timeout)
 398 {
 399         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 400
 401         do {
 402                 unsigned long flags;
 403                 int x;
 404
 405                 spin_lock_irqsave(&s->lock, flags);
 406                 x = host_read_unsafe(s->io_base);
 407                 spin_unlock_irqrestore(&s->lock, flags);
 408                 if (x == 0xfe)
 409                         return 1;
 410
 411                 msleep(10);
 412         } while (time_before(jiffies, end_time));
 413
 414         return 0;
 415 }
 416
 417 /*
 418  * Upload a byte-stream into the SoundScape using DMA channel A.
 419  */
 420 static int upload_dma_data(struct soundscape *s, const unsigned char *data,
 421                            size_t size)
 422 {
 423         unsigned long flags;
 424         struct snd_dma_buffer dma;
 425         int ret;
 426         unsigned char val;
 427
 428         if (!get_dmabuf(s, &dma, PAGE_ALIGN(32 * 1024)))
 429                 return -ENOMEM;
 430
 431         spin_lock_irqsave(&s->lock, flags);
 432
 433         /*
 434          * Reset the board ...
 435          */
 436         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 437         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val & 0x3f);
 438
 439         /*
 440          * Enable the DMA channels and configure them ...
 441          */
 442         val = (s->chip->dma1 << 4) | DMA_8BIT;
 443         sscape_write_unsafe(s->io_base, GA_DMAA_REG, val);
 444         sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20);
 445
 446         /*
 447          * Take the board out of reset ...
 448          */
 449         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 450         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x80);
 451
 452         /*
 453          * Upload the firmware to the SoundScape
 454          * board through the DMA channel ...
 455          */
 456         while (size != 0) {
 457                 unsigned long len;
 458
 459                 len = min(size, dma.bytes);
 460                 memcpy(dma.area, data, len);
 461                 data += len;
 462                 size -= len;
 463
 464                 snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE);
 465                 sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG);
 466                 if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) {
 467                         /*
 468                          * Don't forget to release this spinlock we're holding
 469                          */
 470                         spin_unlock_irqrestore(&s->lock, flags);
 471
 472                         snd_printk(KERN_ERR
 473                                         "sscape: DMA upload has timed out\n");
 474                         ret = -EAGAIN;
 475                         goto _release_dma;
 476                 }
 477         } /* while */
 478
 479         set_host_mode_unsafe(s->io_base);
 480         outb(0x0, s->io_base);
 481
 482         /*
 483          * Boot the board ... (I think)
 484          */
 485         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 486         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x40);
 487         spin_unlock_irqrestore(&s->lock, flags);
 488
 489         /*
 490          * If all has gone well, then the board should acknowledge
 491          * the new upload and tell us that it has rebooted OK. We
 492          * give it 5 seconds (max) ...
 493          */
 494         ret = 0;
 495         if (!obp_startup_ack(s, 5000)) {
 496                 snd_printk(KERN_ERR "sscape: No response "
 497                                     "from on-board processor after upload\n");
 498                 ret = -EAGAIN;
 499         } else if (!host_startup_ack(s, 5000)) {
 500                 snd_printk(KERN_ERR
 501                                 "sscape: SoundScape failed to initialise\n");
 502                 ret = -EAGAIN;
 503         }
 504
 505 _release_dma:
 506         /*
 507          * NOTE!!! We are NOT holding any spinlocks at this point !!!
 508          */
 509         sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_OPUS ? 0x40 : 0x70));
 510         free_dmabuf(&dma);
 511
 512         return ret;
 513 }
 514
 515 /*
 516  * Upload the bootblock(?) into the SoundScape. The only
 517  * purpose of this block of code seems to be to tell
 518  * us which version of the microcode we should be using.
 519  */
 520 static int sscape_upload_bootblock(struct snd_card *card)
 521 {
 522         struct soundscape *sscape = get_card_soundscape(card);
 523         unsigned long flags;
 524         const struct firmware *init_fw = NULL;
 525         int data = 0;
 526         int ret;
 527
 528         ret = reject_firmware(&init_fw, "/*(DEBLOBBED)*/", card->dev);
 529         if (ret < 0) {
 530                 snd_printk(KERN_ERR "sscape: Error loading /*(DEBLOBBED)*/");
 531                 return ret;
 532         }
 533         ret = upload_dma_data(sscape, init_fw->data, init_fw->size);
 534
 535         release_firmware(init_fw);
 536
 537         spin_lock_irqsave(&sscape->lock, flags);
 538         if (ret == 0)
 539                 data = host_read_ctrl_unsafe(sscape->io_base, 100);
 540
 541         if (data & 0x10)
 542                 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2f);
 543
 544         spin_unlock_irqrestore(&sscape->lock, flags);
 545
 546         data &= 0xf;
 547         if (ret == 0 && data > 7) {
 548                 snd_printk(KERN_ERR
 549                                 "sscape: timeout reading firmware version\n");
 550                 ret = -EAGAIN;
 551         }
 552
 553         return (ret == 0) ? data : ret;
 554 }
 555
 556 /*
 557  * Upload the microcode into the SoundScape.
 558  */
 559 static int sscape_upload_microcode(struct snd_card *card, int version)
 560 {
 561         struct soundscape *sscape = get_card_soundscape(card);
 562         const struct firmware *init_fw = NULL;
 563         char name[14];
 564         int err;
 565
 566         snprintf(name, sizeof(name), "/*(DEBLOBBED)*/", version);
 567
 568         err = reject_firmware(&init_fw, name, card->dev);
 569         if (err < 0) {
 570                 snd_printk(KERN_ERR "sscape: Error loading /*(DEBLOBBED)*/",
 571                                 version);
 572                 return err;
 573         }
 574         err = upload_dma_data(sscape, init_fw->data, init_fw->size);
 575         if (err == 0)
 576                 snd_printk(KERN_INFO "sscape: MIDI firmware loaded %zu KBs\n",
 577                                 init_fw->size >> 10);
 578
 579         release_firmware(init_fw);
 580
 581         return err;
 582 }
 583
 584 /*
 585  * Mixer control for the SoundScape's MIDI device.
 586  */
 587 static int sscape_midi_info(struct snd_kcontrol *ctl,
 588                             struct snd_ctl_elem_info *uinfo)
 589 {
 590         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 591         uinfo->count = 1;
 592         uinfo->value.integer.min = 0;
 593         uinfo->value.integer.max = 127;
 594         return 0;
 595 }
 596
 597 static int sscape_midi_get(struct snd_kcontrol *kctl,
 598                            struct snd_ctl_elem_value *uctl)
 599 {
 600         struct snd_wss *chip = snd_kcontrol_chip(kctl);
 601         struct snd_card *card = chip->card;
 602         register struct soundscape *s = get_card_soundscape(card);
 603         unsigned long flags;
 604
 605         spin_lock_irqsave(&s->lock, flags);
 606         uctl->value.integer.value[0] = s->midi_vol;
 607         spin_unlock_irqrestore(&s->lock, flags);
 608         return 0;
 609 }
 610
 611 static int sscape_midi_put(struct snd_kcontrol *kctl,
 612                            struct snd_ctl_elem_value *uctl)
 613 {
 614         struct snd_wss *chip = snd_kcontrol_chip(kctl);
 615         struct snd_card *card = chip->card;
 616         struct soundscape *s = get_card_soundscape(card);
 617         unsigned long flags;
 618         int change;
 619         unsigned char new_val;
 620
 621         spin_lock_irqsave(&s->lock, flags);
 622
 623         new_val = uctl->value.integer.value[0] & 127;
 624         /*
 625          * We need to put the board into HOST mode before we
 626          * can send any volume-changing HOST commands ...
 627          */
 628         set_host_mode_unsafe(s->io_base);
 629
 630         /*
 631          * To successfully change the MIDI volume setting, you seem to
 632          * have to write a volume command, write the new volume value,
 633          * and then perform another volume-related command. Perhaps the
 634          * first command is an "open" and the second command is a "close"?
 635          */
 636         if (s->midi_vol == new_val) {
 637                 change = 0;
 638                 goto __skip_change;
 639         }
 640         change = host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100)
 641                  && host_write_ctrl_unsafe(s->io_base, new_val, 100)
 642                  && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)
 643                  && host_write_ctrl_unsafe(s->io_base, new_val, 100);
 644         s->midi_vol = new_val;
 645 __skip_change:
 646
 647         /*
 648          * Take the board out of HOST mode and back into MIDI mode ...
 649          */
 650         set_midi_mode_unsafe(s->io_base);
 651
 652         spin_unlock_irqrestore(&s->lock, flags);
 653         return change;
 654 }
 655
 656 static const struct snd_kcontrol_new midi_mixer_ctl = {
 657         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 658         .name = "MIDI",
 659         .info = sscape_midi_info,
 660         .get = sscape_midi_get,
 661         .put = sscape_midi_put
 662 };
 663
 664 /*
 665  * The SoundScape can use two IRQs from a possible set of four.
 666  * These IRQs are encoded as bit patterns so that they can be
 667  * written to the control registers.
 668  */
 669 static unsigned get_irq_config(int sscape_type, int irq)
 670 {
 671         static const int valid_irq[] = { 9, 5, 7, 10 };
 672         static const int old_irq[] = { 9, 7, 5, 15 };
 673         unsigned cfg;
 674
 675         if (sscape_type == MEDIA_FX) {
 676                 for (cfg = 0; cfg < ARRAY_SIZE(old_irq); ++cfg)
 677                         if (irq == old_irq[cfg])
 678                                 return cfg;
 679         } else {
 680                 for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg)
 681                         if (irq == valid_irq[cfg])
 682                                 return cfg;
 683         }
 684
 685         return INVALID_IRQ;
 686 }
 687
 688 /*
 689  * Perform certain arcane port-checks to see whether there
 690  * is a SoundScape board lurking behind the given ports.
 691  */
 692 static int detect_sscape(struct soundscape *s, long wss_io)
 693 {
 694         unsigned long flags;
 695         unsigned d;
 696         int retval = 0;
 697
 698         spin_lock_irqsave(&s->lock, flags);
 699
 700         /*
 701          * The following code is lifted from the original OSS driver,
 702          * and as I don't have a datasheet I cannot really comment
 703          * on what it is doing...
 704          */
 705         if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0)
 706                 goto _done;
 707
 708         d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0;
 709         if ((d & 0x80) != 0)
 710                 goto _done;
 711
 712         if (d == 0)
 713                 s->ic_type = IC_ODIE;
 714         else if ((d & 0x60) != 0)
 715                 s->ic_type = IC_OPUS;
 716         else
 717                 goto _done;
 718
 719         outb(0xfa, ODIE_ADDR_IO(s->io_base));
 720         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a)
 721                 goto _done;
 722
 723         outb(0xfe, ODIE_ADDR_IO(s->io_base));
 724         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e)
 725                 goto _done;
 726
 727         outb(0xfe, ODIE_ADDR_IO(s->io_base));
 728         d = inb(ODIE_DATA_IO(s->io_base));
 729         if (s->type != SSCAPE_VIVO && (d & 0x9f) != 0x0e)
 730                 goto _done;
 731
 732         if (s->ic_type == IC_OPUS)
 733                 activate_ad1845_unsafe(s->io_base);
 734
 735         if (s->type == SSCAPE_VIVO)
 736                 wss_io += 4;
 737
 738         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 739         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 740
 741         /* wait for WSS codec */
 742         for (d = 0; d < 500; d++) {
 743                 if ((inb(wss_io) & 0x80) == 0)
 744                         break;
 745                 spin_unlock_irqrestore(&s->lock, flags);
 746                 msleep(1);
 747                 spin_lock_irqsave(&s->lock, flags);
 748         }
 749
 750         if ((inb(wss_io) & 0x80) != 0)
 751                 goto _done;
 752
 753         if (inb(wss_io + 2) == 0xff)
 754                 goto _done;
 755
 756         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f;
 757         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d);
 758
 759         if ((inb(wss_io) & 0x80) != 0)
 760                 s->type = MEDIA_FX;
 761
 762         d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 763         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 764         /* wait for WSS codec */
 765         for (d = 0; d < 500; d++) {
 766                 if ((inb(wss_io) & 0x80) == 0)
 767                         break;
 768                 spin_unlock_irqrestore(&s->lock, flags);
 769                 msleep(1);
 770                 spin_lock_irqsave(&s->lock, flags);
 771         }
 772
 773         /*
 774          * SoundScape successfully detected!
 775          */
 776         retval = 1;
 777
 778 _done:
 779         spin_unlock_irqrestore(&s->lock, flags);
 780         return retval;
 781 }
 782
 783 /*
 784  * ALSA callback function, called when attempting to open the MIDI device.
 785  * Check that the MIDI firmware has been loaded, because we don't want
 786  * to crash the machine. Also check that someone isn't using the hardware
 787  * IOCTL device.
 788  */
 789 static int mpu401_open(struct snd_mpu401 *mpu)
 790 {
 791         if (!verify_mpu401(mpu)) {
 792                 snd_printk(KERN_ERR "sscape: MIDI disabled, "
 793                                     "please load firmware\n");
 794                 return -ENODEV;
 795         }
 796
 797         return 0;
 798 }
 799
 800 /*
 801  * Initialise an MPU-401 subdevice for MIDI support on the SoundScape.
 802  */
 803 static int create_mpu401(struct snd_card *card, int devnum,
 804                          unsigned long port, int irq)
 805 {
 806         struct soundscape *sscape = get_card_soundscape(card);
 807         struct snd_rawmidi *rawmidi;
 808         int err;
 809
 810         err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port,
 811                                   MPU401_INFO_INTEGRATED, irq, &rawmidi);
 812         if (err == 0) {
 813                 struct snd_mpu401 *mpu = rawmidi->private_data;
 814                 mpu->open_input = mpu401_open;
 815                 mpu->open_output = mpu401_open;
 816                 mpu->private_data = sscape;
 817
 818                 initialise_mpu401(mpu);
 819         }
 820
 821         return err;
 822 }
 823
 824
 825 /*
 826  * Create an AD1845 PCM subdevice on the SoundScape. The AD1845
 827  * is very much like a CS4231, with a few extra bits. We will
 828  * try to support at least some of the extra bits by overriding
 829  * some of the CS4231 callback.
 830  */
 831 static int create_ad1845(struct snd_card *card, unsigned port,
 832                          int irq, int dma1, int dma2)
 833 {
 834         register struct soundscape *sscape = get_card_soundscape(card);
 835         struct snd_wss *chip;
 836         int err;
 837         int codec_type = WSS_HW_DETECT;
 838
 839         switch (sscape->type) {
 840         case MEDIA_FX:
 841         case SSCAPE:
 842                 /*
 843                  * There are some freak examples of early Soundscape cards
 844                  * with CS4231 instead of AD1848/CS4248. Unfortunately, the
 845                  * CS4231 works only in CS4248 compatibility mode on
 846                  * these cards so force it.
 847                  */
 848                 if (sscape->ic_type != IC_OPUS)
 849                         codec_type = WSS_HW_AD1848;
 850                 break;
 851
 852         case SSCAPE_VIVO:
 853                 port += 4;
 854                 break;
 855         default:
 856                 break;
 857         }
 858
 859         err = snd_wss_create(card, port, -1, irq, dma1, dma2,
 860                              codec_type, WSS_HWSHARE_DMA1, &chip);
 861         if (!err) {
 862                 unsigned long flags;
 863
 864                 if (sscape->type != SSCAPE_VIVO) {
 865                         /*
 866                          * The input clock frequency on the SoundScape must
 867                          * be 14.31818 MHz, because we must set this register
 868                          * to get the playback to sound correct ...
 869                          */
 870                         snd_wss_mce_up(chip);
 871                         spin_lock_irqsave(&chip->reg_lock, flags);
 872                         snd_wss_out(chip, AD1845_CLOCK, 0x20);
 873                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 874                         snd_wss_mce_down(chip);
 875
 876                 }
 877
 878                 err = snd_wss_pcm(chip, 0);
 879                 if (err < 0) {
 880                         snd_printk(KERN_ERR "sscape: No PCM device "
 881                                             "for AD1845 chip\n");
 882                         goto _error;
 883                 }
 884
 885                 err = snd_wss_mixer(chip);
 886                 if (err < 0) {
 887                         snd_printk(KERN_ERR "sscape: No mixer device "
 888                                             "for AD1845 chip\n");
 889                         goto _error;
 890                 }
 891                 if (chip->hardware != WSS_HW_AD1848) {
 892                         err = snd_wss_timer(chip, 0);
 893                         if (err < 0) {
 894                                 snd_printk(KERN_ERR "sscape: No timer device "
 895                                                     "for AD1845 chip\n");
 896                                 goto _error;
 897                         }
 898                 }
 899
 900                 if (sscape->type != SSCAPE_VIVO) {
 901                         err = snd_ctl_add(card,
 902                                           snd_ctl_new1(&midi_mixer_ctl, chip));
 903                         if (err < 0) {
 904                                 snd_printk(KERN_ERR "sscape: Could not create "
 905                                                     "MIDI mixer control\n");
 906                                 goto _error;
 907                         }
 908                 }
 909
 910                 sscape->chip = chip;
 911         }
 912
 913 _error:
 914         return err;
 915 }
 916
 917
 918 /*
 919  * Create an ALSA soundcard entry for the SoundScape, using
 920  * the given list of port, IRQ and DMA resources.
 921  */
 922 static int create_sscape(int dev, struct snd_card *card)
 923 {
 924         struct soundscape *sscape = get_card_soundscape(card);
 925         unsigned dma_cfg;
 926         unsigned irq_cfg;
 927         unsigned mpu_irq_cfg;
 928         struct resource *io_res;
 929         struct resource *wss_res;
 930         unsigned long flags;
 931         int err;
 932         int val;
 933         const char *name;
 934
 935         /*
 936          * Grab IO ports that we will need to probe so that we
 937          * can detect and control this hardware ...
 938          */
 939         io_res = request_region(port[dev], 8, "SoundScape");
 940         if (!io_res) {
 941                 snd_printk(KERN_ERR
 942                            "sscape: can't grab port 0x%lx\n", port[dev]);
 943                 return -EBUSY;
 944         }
 945         wss_res = NULL;
 946         if (sscape->type == SSCAPE_VIVO) {
 947                 wss_res = request_region(wss_port[dev], 4, "SoundScape");
 948                 if (!wss_res) {
 949                         snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n",
 950                                             wss_port[dev]);
 951                         err = -EBUSY;
 952                         goto _release_region;
 953                 }
 954         }
 955
 956         /*
 957          * Grab one DMA channel ...
 958          */
 959         err = request_dma(dma[dev], "SoundScape");
 960         if (err < 0) {
 961                 snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
 962                 goto _release_region;
 963         }
 964
 965         spin_lock_init(&sscape->lock);
 966         sscape->io_res = io_res;
 967         sscape->wss_res = wss_res;
 968         sscape->io_base = port[dev];
 969
 970         if (!detect_sscape(sscape, wss_port[dev])) {
 971                 printk(KERN_ERR "sscape: hardware not detected at 0x%x\n",
 972                         sscape->io_base);
 973                 err = -ENODEV;
 974                 goto _release_dma;
 975         }
 976
 977         switch (sscape->type) {
 978         case MEDIA_FX:
 979                 name = "MediaFX/SoundFX";
 980                 break;
 981         case SSCAPE:
 982                 name = "Soundscape";
 983                 break;
 984         case SSCAPE_PNP:
 985                 name = "Soundscape PnP";
 986                 break;
 987         case SSCAPE_VIVO:
 988                 name = "Soundscape VIVO";
 989                 break;
 990         default:
 991                 name = "unknown Soundscape";
 992                 break;
 993         }
 994
 995         printk(KERN_INFO "sscape: %s card detected at 0x%x, using IRQ %d, DMA %d\n",
 996                          name, sscape->io_base, irq[dev], dma[dev]);
 997
 998         /*
 999          * Check that the user didn't pass us garbage data ...
1000          */
1001         irq_cfg = get_irq_config(sscape->type, irq[dev]);
1002         if (irq_cfg == INVALID_IRQ) {
1003                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
1004                 err = -ENXIO;
1005                 goto _release_dma;
1006         }
1007
1008         mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]);
1009         if (mpu_irq_cfg == INVALID_IRQ) {
1010                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
1011                 err = -ENXIO;
1012                 goto _release_dma;
1013         }
1014
1015         /*
1016          * Tell the on-board devices where their resources are (I think -
1017          * I can't be sure without a datasheet ... So many magic values!)
1018          */
1019         spin_lock_irqsave(&sscape->lock, flags);
1020
1021         sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e);
1022         sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00);
1023
1024         /*
1025          * Enable and configure the DMA channels ...
1026          */
1027         sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50);
1028         dma_cfg = (sscape->ic_type == IC_OPUS ? 0x40 : 0x70);
1029         sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg);
1030         sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20);
1031
1032         mpu_irq_cfg |= mpu_irq_cfg << 2;
1033         val = sscape_read_unsafe(sscape->io_base, GA_HMCTL_REG) & 0xF7;
1034         if (joystick[dev])
1035                 val |= 8;
1036         sscape_write_unsafe(sscape->io_base, GA_HMCTL_REG, val | 0x10);
1037         sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | mpu_irq_cfg);
1038         sscape_write_unsafe(sscape->io_base,
1039                             GA_CDCFG_REG, 0x09 | DMA_8BIT
1040                             | (dma[dev] << 4) | (irq_cfg << 1));
1041         /*
1042          * Enable the master IRQ ...
1043          */
1044         sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x80);
1045
1046         spin_unlock_irqrestore(&sscape->lock, flags);
1047
1048         /*
1049          * We have now enabled the codec chip, and so we should
1050          * detect the AD1845 device ...
1051          */
1052         err = create_ad1845(card, wss_port[dev], irq[dev],
1053                             dma[dev], dma2[dev]);
1054         if (err < 0) {
1055                 snd_printk(KERN_ERR
1056                                 "sscape: No AD1845 device at 0x%lx, IRQ %d\n",
1057                                 wss_port[dev], irq[dev]);
1058                 goto _release_dma;
1059         }
1060         strcpy(card->driver, "SoundScape");
1061         strcpy(card->shortname, name);
1062         snprintf(card->longname, sizeof(card->longname),
1063                  "%s at 0x%lx, IRQ %d, DMA1 %d, DMA2 %d\n",
1064                  name, sscape->chip->port, sscape->chip->irq,
1065                  sscape->chip->dma1, sscape->chip->dma2);
1066
1067 #define MIDI_DEVNUM  0
1068         if (sscape->type != SSCAPE_VIVO) {
1069                 err = sscape_upload_bootblock(card);
1070                 if (err >= 0)
1071                         err = sscape_upload_microcode(card, err);
1072
1073                 if (err == 0) {
1074                         err = create_mpu401(card, MIDI_DEVNUM, port[dev],
1075                                             mpu_irq[dev]);
1076                         if (err < 0) {
1077                                 snd_printk(KERN_ERR "sscape: Failed to create "
1078                                                 "MPU-401 device at 0x%lx\n",
1079                                                 port[dev]);
1080                                 goto _release_dma;
1081                         }
1082
1083                         /*
1084                          * Initialize mixer
1085                          */
1086                         spin_lock_irqsave(&sscape->lock, flags);
1087                         sscape->midi_vol = 0;
1088                         host_write_ctrl_unsafe(sscape->io_base,
1089                                                 CMD_SET_MIDI_VOL, 100);
1090                         host_write_ctrl_unsafe(sscape->io_base,
1091                                                 sscape->midi_vol, 100);
1092                         host_write_ctrl_unsafe(sscape->io_base,
1093                                                 CMD_XXX_MIDI_VOL, 100);
1094                         host_write_ctrl_unsafe(sscape->io_base,
1095                                                 sscape->midi_vol, 100);
1096                         host_write_ctrl_unsafe(sscape->io_base,
1097                                                 CMD_SET_EXTMIDI, 100);
1098                         host_write_ctrl_unsafe(sscape->io_base,
1099                                                 0, 100);
1100                         host_write_ctrl_unsafe(sscape->io_base, CMD_ACK, 100);
1101
1102                         set_midi_mode_unsafe(sscape->io_base);
1103                         spin_unlock_irqrestore(&sscape->lock, flags);
1104                 }
1105         }
1106
1107         /*
1108          * Now that we have successfully created this sound card,
1109          * it is safe to store the pointer.
1110          * NOTE: we only register the sound card's "destructor"
1111          *       function now that our "constructor" has completed.
1112          */
1113         card->private_free = soundscape_free;
1114
1115         return 0;
1116
1117 _release_dma:
1118         free_dma(dma[dev]);
1119
1120 _release_region:
1121         release_and_free_resource(wss_res);
1122         release_and_free_resource(io_res);
1123
1124         return err;
1125 }
1126
1127
1128 static int snd_sscape_match(struct device *pdev, unsigned int i)
1129 {
1130         /*
1131          * Make sure we were given ALL of the other parameters.
1132          */
1133         if (port[i] == SNDRV_AUTO_PORT)
1134                 return 0;
1135
1136         if (irq[i] == SNDRV_AUTO_IRQ ||
1137             mpu_irq[i] == SNDRV_AUTO_IRQ ||
1138             dma[i] == SNDRV_AUTO_DMA) {
1139                 printk(KERN_INFO
1140                        "sscape: insufficient parameters, "
1141                        "need IO, IRQ, MPU-IRQ and DMA\n");
1142                 return 0;
1143         }
1144
1145         return 1;
1146 }
1147
1148 static int snd_sscape_probe(struct device *pdev, unsigned int dev)
1149 {
1150         struct snd_card *card;
1151         struct soundscape *sscape;
1152         int ret;
1153
1154         ret = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
1155                            sizeof(struct soundscape), &card);
1156         if (ret < 0)
1157                 return ret;
1158
1159         sscape = get_card_soundscape(card);
1160         sscape->type = SSCAPE;
1161
1162         dma[dev] &= 0x03;
1163
1164         ret = create_sscape(dev, card);
1165         if (ret < 0)
1166                 goto _release_card;
1167
1168         ret = snd_card_register(card);
1169         if (ret < 0) {
1170                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1171                 goto _release_card;
1172         }
1173         dev_set_drvdata(pdev, card);
1174         return 0;
1175
1176 _release_card:
1177         snd_card_free(card);
1178         return ret;
1179 }
1180
1181 static int snd_sscape_remove(struct device *devptr, unsigned int dev)
1182 {
1183         snd_card_free(dev_get_drvdata(devptr));
1184         return 0;
1185 }
1186
1187 #define DEV_NAME "sscape"
1188
1189 static struct isa_driver snd_sscape_driver = {
1190         .match          = snd_sscape_match,
1191         .probe          = snd_sscape_probe,
1192         .remove         = snd_sscape_remove,
1193         /* FIXME: suspend/resume */
1194         .driver         = {
1195                 .name   = DEV_NAME
1196         },
1197 };
1198
1199 #ifdef CONFIG_PNP
1200 static inline int get_next_autoindex(int i)
1201 {
1202         while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT)
1203                 ++i;
1204         return i;
1205 }
1206
1207
1208 static int sscape_pnp_detect(struct pnp_card_link *pcard,
1209                              const struct pnp_card_device_id *pid)
1210 {
1211         static int idx = 0;
1212         struct pnp_dev *dev;
1213         struct snd_card *card;
1214         struct soundscape *sscape;
1215         int ret;
1216
1217         /*
1218          * Allow this function to fail *quietly* if all the ISA PnP
1219          * devices were configured using module parameters instead.
1220          */
1221         idx = get_next_autoindex(idx);
1222         if (idx >= SNDRV_CARDS)
1223                 return -ENOSPC;
1224
1225         /*
1226          * Check that we still have room for another sound card ...
1227          */
1228         dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
1229         if (!dev)
1230                 return -ENODEV;
1231
1232         if (!pnp_is_active(dev)) {
1233                 if (pnp_activate_dev(dev) < 0) {
1234                         snd_printk(KERN_INFO "sscape: device is inactive\n");
1235                         return -EBUSY;
1236                 }
1237         }
1238
1239         /*
1240          * Create a new ALSA sound card entry, in anticipation
1241          * of detecting our hardware ...
1242          */
1243         ret = snd_card_new(&pcard->card->dev,
1244                            index[idx], id[idx], THIS_MODULE,
1245                            sizeof(struct soundscape), &card);
1246         if (ret < 0)
1247                 return ret;
1248
1249         sscape = get_card_soundscape(card);
1250
1251         /*
1252          * Identify card model ...
1253          */
1254         if (!strncmp("ENS4081", pid->id, 7))
1255                 sscape->type = SSCAPE_VIVO;
1256         else
1257                 sscape->type = SSCAPE_PNP;
1258
1259         /*
1260          * Read the correct parameters off the ISA PnP bus ...
1261          */
1262         port[idx] = pnp_port_start(dev, 0);
1263         irq[idx] = pnp_irq(dev, 0);
1264         mpu_irq[idx] = pnp_irq(dev, 1);
1265         dma[idx] = pnp_dma(dev, 0) & 0x03;
1266         if (sscape->type == SSCAPE_PNP) {
1267                 dma2[idx] = dma[idx];
1268                 wss_port[idx] = CODEC_IO(port[idx]);
1269         } else {
1270                 wss_port[idx] = pnp_port_start(dev, 1);
1271                 dma2[idx] = pnp_dma(dev, 1);
1272         }
1273
1274         ret = create_sscape(idx, card);
1275         if (ret < 0)
1276                 goto _release_card;
1277
1278         ret = snd_card_register(card);
1279         if (ret < 0) {
1280                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1281                 goto _release_card;
1282         }
1283
1284         pnp_set_card_drvdata(pcard, card);
1285         ++idx;
1286         return 0;
1287
1288 _release_card:
1289         snd_card_free(card);
1290         return ret;
1291 }
1292
1293 static void sscape_pnp_remove(struct pnp_card_link *pcard)
1294 {
1295         snd_card_free(pnp_get_card_drvdata(pcard));
1296         pnp_set_card_drvdata(pcard, NULL);
1297 }
1298
1299 static struct pnp_card_driver sscape_pnpc_driver = {
1300         .flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
1301         .name = "sscape",
1302         .id_table = sscape_pnpids,
1303         .probe = sscape_pnp_detect,
1304         .remove = sscape_pnp_remove,
1305 };
1306
1307 #endif /* CONFIG_PNP */
1308
1309 static int __init sscape_init(void)
1310 {
1311         int err;
1312
1313         err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS);
1314 #ifdef CONFIG_PNP
1315         if (!err)
1316                 isa_registered = 1;
1317
1318         err = pnp_register_card_driver(&sscape_pnpc_driver);
1319         if (!err)
1320                 pnp_registered = 1;
1321
1322         if (isa_registered)
1323                 err = 0;
1324 #endif
1325         return err;
1326 }
1327
1328 static void __exit sscape_exit(void)
1329 {
1330 #ifdef CONFIG_PNP
1331         if (pnp_registered)
1332                 pnp_unregister_card_driver(&sscape_pnpc_driver);
1333         if (isa_registered)
1334 #endif
1335                 isa_unregister_driver(&snd_sscape_driver);
1336 }
1337
1338 module_init(sscape_init);
1339 module_exit(sscape_exit);