sound/isa/sscape.c

   1 /*
   2  *   Low-level ALSA driver for the ENSONIQ SoundScape
   3  *   Copyright (c) by Chris Rankin
   4  *
   5  *   This driver was written in part using information obtained from
   6  *   the OSS/Free SoundScape driver, written by Hannu Savolainen.
   7  *
   8  *
   9  *   This program is free software; you can redistribute it and/or modify
  10  *   it under the terms of the GNU General Public License as published by
  11  *   the Free Software Foundation; either version 2 of the License, or
  12  *   (at your option) any later version.
  13  *
  14  *   This program is distributed in the hope that it will be useful,
  15  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *   GNU General Public License for more details.
  18  *
  19  *   You should have received a copy of the GNU General Public License
  20  *   along with this program; if not, write to the Free Software
  21  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  22  */
  23
  24 #include <linux/init.h>
  25 #include <linux/err.h>
  26 #include <linux/io.h>
  27 #include <linux/isa.h>
  28 #include <linux/delay.h>
  29 #include <linux/firmware.h>
  30 #include <linux/pnp.h>
  31 #include <linux/spinlock.h>
  32 #include <linux/module.h>
  33 #include <asm/dma.h>
  34 #include <sound/core.h>
  35 #include <sound/wss.h>
  36 #include <sound/mpu401.h>
  37 #include <sound/initval.h>
  38
  39
  40 MODULE_AUTHOR("Chris Rankin");
  41 MODULE_DESCRIPTION("ENSONIQ SoundScape driver");
  42 MODULE_LICENSE("GPL");
  43 /*(DEBLOBBED)*/
  44
  45 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  46 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  47 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  48 static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  49 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  50 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  51 static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  52 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  53 static bool joystick[SNDRV_CARDS];
  54
  55 module_param_array(index, int, NULL, 0444);
  56 MODULE_PARM_DESC(index, "Index number for SoundScape soundcard");
  57
  58 module_param_array(id, charp, NULL, 0444);
  59 MODULE_PARM_DESC(id, "Description for SoundScape card");
  60
  61 module_param_array(port, long, NULL, 0444);
  62 MODULE_PARM_DESC(port, "Port # for SoundScape driver.");
  63
  64 module_param_array(wss_port, long, NULL, 0444);
  65 MODULE_PARM_DESC(wss_port, "WSS Port # for SoundScape driver.");
  66
  67 module_param_array(irq, int, NULL, 0444);
  68 MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver.");
  69
  70 module_param_array(mpu_irq, int, NULL, 0444);
  71 MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver.");
  72
  73 module_param_array(dma, int, NULL, 0444);
  74 MODULE_PARM_DESC(dma, "DMA # for SoundScape driver.");
  75
  76 module_param_array(dma2, int, NULL, 0444);
  77 MODULE_PARM_DESC(dma2, "DMA2 # for SoundScape driver.");
  78
  79 module_param_array(joystick, bool, NULL, 0444);
  80 MODULE_PARM_DESC(joystick, "Enable gameport.");
  81
  82 #ifdef CONFIG_PNP
  83 static int isa_registered;
  84 static int pnp_registered;
  85
  86 static struct pnp_card_device_id sscape_pnpids[] = {
  87         { .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */
  88         { .id = "ENS4081", .devs = { { "ENS1011" } } }, /* VIVO90 */
  89         { .id = "" }    /* end */
  90 };
  91
  92 MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids);
  93 #endif
  94
  95
  96 #define HOST_CTRL_IO(i)  ((i) + 2)
  97 #define HOST_DATA_IO(i)  ((i) + 3)
  98 #define ODIE_ADDR_IO(i)  ((i) + 4)
  99 #define ODIE_DATA_IO(i)  ((i) + 5)
 100 #define CODEC_IO(i)      ((i) + 8)
 101
 102 #define IC_ODIE  1
 103 #define IC_OPUS  2
 104
 105 #define RX_READY 0x01
 106 #define TX_READY 0x02
 107
 108 #define CMD_ACK                 0x80
 109 #define CMD_SET_MIDI_VOL        0x84
 110 #define CMD_GET_MIDI_VOL        0x85
 111 #define CMD_XXX_MIDI_VOL        0x86
 112 #define CMD_SET_EXTMIDI         0x8a
 113 #define CMD_GET_EXTMIDI         0x8b
 114 #define CMD_SET_MT32            0x8c
 115 #define CMD_GET_MT32            0x8d
 116
 117 enum GA_REG {
 118         GA_INTSTAT_REG = 0,
 119         GA_INTENA_REG,
 120         GA_DMAA_REG,
 121         GA_DMAB_REG,
 122         GA_INTCFG_REG,
 123         GA_DMACFG_REG,
 124         GA_CDCFG_REG,
 125         GA_SMCFGA_REG,
 126         GA_SMCFGB_REG,
 127         GA_HMCTL_REG
 128 };
 129
 130 #define DMA_8BIT  0x80
 131
 132
 133 enum card_type {
 134         MEDIA_FX,       /* Sequoia S-1000 */
 135         SSCAPE,         /* Sequoia S-2000 */
 136         SSCAPE_PNP,
 137         SSCAPE_VIVO,
 138 };
 139
 140 struct soundscape {
 141         spinlock_t lock;
 142         unsigned io_base;
 143         int ic_type;
 144         enum card_type type;
 145         struct resource *io_res;
 146         struct resource *wss_res;
 147         struct snd_wss *chip;
 148
 149         unsigned char midi_vol;
 150 };
 151
 152 #define INVALID_IRQ  ((unsigned)-1)
 153
 154
 155 static inline struct soundscape *get_card_soundscape(struct snd_card *c)
 156 {
 157         return (struct soundscape *) (c->private_data);
 158 }
 159
 160 /*
 161  * Allocates some kernel memory that we can use for DMA.
 162  * I think this means that the memory has to map to
 163  * contiguous pages of physical memory.
 164  */
 165 static struct snd_dma_buffer *get_dmabuf(struct snd_dma_buffer *buf,
 166                                          unsigned long size)
 167 {
 168         if (buf) {
 169                 if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV,
 170                                                  snd_dma_isa_data(),
 171                                                  size, buf) < 0) {
 172                         snd_printk(KERN_ERR "sscape: Failed to allocate "
 173                                             "%lu bytes for DMA\n",
 174                                             size);
 175                         return NULL;
 176                 }
 177         }
 178
 179         return buf;
 180 }
 181
 182 /*
 183  * Release the DMA-able kernel memory ...
 184  */
 185 static void free_dmabuf(struct snd_dma_buffer *buf)
 186 {
 187         if (buf && buf->area)
 188                 snd_dma_free_pages(buf);
 189 }
 190
 191 /*
 192  * This function writes to the SoundScape's control registers,
 193  * but doesn't do any locking. It's up to the caller to do that.
 194  * This is why this function is "unsafe" ...
 195  */
 196 static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg,
 197                                        unsigned char val)
 198 {
 199         outb(reg, ODIE_ADDR_IO(io_base));
 200         outb(val, ODIE_DATA_IO(io_base));
 201 }
 202
 203 /*
 204  * Write to the SoundScape's control registers, and do the
 205  * necessary locking ...
 206  */
 207 static void sscape_write(struct soundscape *s, enum GA_REG reg,
 208                          unsigned char val)
 209 {
 210         unsigned long flags;
 211
 212         spin_lock_irqsave(&s->lock, flags);
 213         sscape_write_unsafe(s->io_base, reg, val);
 214         spin_unlock_irqrestore(&s->lock, flags);
 215 }
 216
 217 /*
 218  * Read from the SoundScape's control registers, but leave any
 219  * locking to the caller. This is why the function is "unsafe" ...
 220  */
 221 static inline unsigned char sscape_read_unsafe(unsigned io_base,
 222                                                enum GA_REG reg)
 223 {
 224         outb(reg, ODIE_ADDR_IO(io_base));
 225         return inb(ODIE_DATA_IO(io_base));
 226 }
 227
 228 /*
 229  * Puts the SoundScape into "host" mode, as compared to "MIDI" mode
 230  */
 231 static inline void set_host_mode_unsafe(unsigned io_base)
 232 {
 233         outb(0x0, HOST_CTRL_IO(io_base));
 234 }
 235
 236 /*
 237  * Puts the SoundScape into "MIDI" mode, as compared to "host" mode
 238  */
 239 static inline void set_midi_mode_unsafe(unsigned io_base)
 240 {
 241         outb(0x3, HOST_CTRL_IO(io_base));
 242 }
 243
 244 /*
 245  * Read the SoundScape's host-mode control register, but leave
 246  * any locking issues to the caller ...
 247  */
 248 static inline int host_read_unsafe(unsigned io_base)
 249 {
 250         int data = -1;
 251         if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0)
 252                 data = inb(HOST_DATA_IO(io_base));
 253
 254         return data;
 255 }
 256
 257 /*
 258  * Read the SoundScape's host-mode control register, performing
 259  * a limited amount of busy-waiting if the register isn't ready.
 260  * Also leaves all locking-issues to the caller ...
 261  */
 262 static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout)
 263 {
 264         int data;
 265
 266         while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) {
 267                 udelay(100);
 268                 --timeout;
 269         } /* while */
 270
 271         return data;
 272 }
 273
 274 /*
 275  * Write to the SoundScape's host-mode control registers, but
 276  * leave any locking issues to the caller ...
 277  */
 278 static inline int host_write_unsafe(unsigned io_base, unsigned char data)
 279 {
 280         if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) {
 281                 outb(data, HOST_DATA_IO(io_base));
 282                 return 1;
 283         }
 284
 285         return 0;
 286 }
 287
 288 /*
 289  * Write to the SoundScape's host-mode control registers, performing
 290  * a limited amount of busy-waiting if the register isn't ready.
 291  * Also leaves all locking-issues to the caller ...
 292  */
 293 static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data,
 294                                   unsigned timeout)
 295 {
 296         int err;
 297
 298         while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) {
 299                 udelay(100);
 300                 --timeout;
 301         } /* while */
 302
 303         return err;
 304 }
 305
 306
 307 /*
 308  * Check that the MIDI subsystem is operational. If it isn't,
 309  * then we will hang the computer if we try to use it ...
 310  *
 311  * NOTE: This check is based upon observation, not documentation.
 312  */
 313 static inline int verify_mpu401(const struct snd_mpu401 *mpu)
 314 {
 315         return ((inb(MPU401C(mpu)) & 0xc0) == 0x80);
 316 }
 317
 318 /*
 319  * This is apparently the standard way to initailise an MPU-401
 320  */
 321 static inline void initialise_mpu401(const struct snd_mpu401 *mpu)
 322 {
 323         outb(0, MPU401D(mpu));
 324 }
 325
 326 /*
 327  * Tell the SoundScape to activate the AD1845 chip (I think).
 328  * The AD1845 detection fails if we *don't* do this, so I
 329  * think that this is a good idea ...
 330  */
 331 static void activate_ad1845_unsafe(unsigned io_base)
 332 {
 333         unsigned char val = sscape_read_unsafe(io_base, GA_HMCTL_REG);
 334         sscape_write_unsafe(io_base, GA_HMCTL_REG, (val & 0xcf) | 0x10);
 335         sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80);
 336 }
 337
 338 /*
 339  * Do the necessary ALSA-level cleanup to deallocate our driver ...
 340  */
 341 static void soundscape_free(struct snd_card *c)
 342 {
 343         struct soundscape *sscape = get_card_soundscape(c);
 344         release_and_free_resource(sscape->io_res);
 345         release_and_free_resource(sscape->wss_res);
 346         free_dma(sscape->chip->dma1);
 347 }
 348
 349 /*
 350  * Tell the SoundScape to begin a DMA tranfer using the given channel.
 351  * All locking issues are left to the caller.
 352  */
 353 static void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg)
 354 {
 355         sscape_write_unsafe(io_base, reg,
 356                             sscape_read_unsafe(io_base, reg) | 0x01);
 357         sscape_write_unsafe(io_base, reg,
 358                             sscape_read_unsafe(io_base, reg) & 0xfe);
 359 }
 360
 361 /*
 362  * Wait for a DMA transfer to complete. This is a "limited busy-wait",
 363  * and all locking issues are left to the caller.
 364  */
 365 static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg,
 366                                   unsigned timeout)
 367 {
 368         while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) {
 369                 udelay(100);
 370                 --timeout;
 371         } /* while */
 372
 373         return sscape_read_unsafe(io_base, reg) & 0x01;
 374 }
 375
 376 /*
 377  * Wait for the On-Board Processor to return its start-up
 378  * acknowledgement sequence. This wait is too long for
 379  * us to perform "busy-waiting", and so we must sleep.
 380  * This in turn means that we must not be holding any
 381  * spinlocks when we call this function.
 382  */
 383 static int obp_startup_ack(struct soundscape *s, unsigned timeout)
 384 {
 385         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 386
 387         do {
 388                 unsigned long flags;
 389                 int x;
 390
 391                 spin_lock_irqsave(&s->lock, flags);
 392                 x = host_read_unsafe(s->io_base);
 393                 spin_unlock_irqrestore(&s->lock, flags);
 394                 if (x == 0xfe || x == 0xff)
 395                         return 1;
 396
 397                 msleep(10);
 398         } while (time_before(jiffies, end_time));
 399
 400         return 0;
 401 }
 402
 403 /*
 404  * Wait for the host to return its start-up acknowledgement
 405  * sequence. This wait is too long for us to perform
 406  * "busy-waiting", and so we must sleep. This in turn means
 407  * that we must not be holding any spinlocks when we call
 408  * this function.
 409  */
 410 static int host_startup_ack(struct soundscape *s, unsigned timeout)
 411 {
 412         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 413
 414         do {
 415                 unsigned long flags;
 416                 int x;
 417
 418                 spin_lock_irqsave(&s->lock, flags);
 419                 x = host_read_unsafe(s->io_base);
 420                 spin_unlock_irqrestore(&s->lock, flags);
 421                 if (x == 0xfe)
 422                         return 1;
 423
 424                 msleep(10);
 425         } while (time_before(jiffies, end_time));
 426
 427         return 0;
 428 }
 429
 430 /*
 431  * Upload a byte-stream into the SoundScape using DMA channel A.
 432  */
 433 static int upload_dma_data(struct soundscape *s, const unsigned char *data,
 434                            size_t size)
 435 {
 436         unsigned long flags;
 437         struct snd_dma_buffer dma;
 438         int ret;
 439         unsigned char val;
 440
 441         if (!get_dmabuf(&dma, PAGE_ALIGN(32 * 1024)))
 442                 return -ENOMEM;
 443
 444         spin_lock_irqsave(&s->lock, flags);
 445
 446         /*
 447          * Reset the board ...
 448          */
 449         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 450         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val & 0x3f);
 451
 452         /*
 453          * Enable the DMA channels and configure them ...
 454          */
 455         val = (s->chip->dma1 << 4) | DMA_8BIT;
 456         sscape_write_unsafe(s->io_base, GA_DMAA_REG, val);
 457         sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20);
 458
 459         /*
 460          * Take the board out of reset ...
 461          */
 462         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 463         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x80);
 464
 465         /*
 466          * Upload the firmware to the SoundScape
 467          * board through the DMA channel ...
 468          */
 469         while (size != 0) {
 470                 unsigned long len;
 471
 472                 len = min(size, dma.bytes);
 473                 memcpy(dma.area, data, len);
 474                 data += len;
 475                 size -= len;
 476
 477                 snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE);
 478                 sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG);
 479                 if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) {
 480                         /*
 481                          * Don't forget to release this spinlock we're holding
 482                          */
 483                         spin_unlock_irqrestore(&s->lock, flags);
 484
 485                         snd_printk(KERN_ERR
 486                                         "sscape: DMA upload has timed out\n");
 487                         ret = -EAGAIN;
 488                         goto _release_dma;
 489                 }
 490         } /* while */
 491
 492         set_host_mode_unsafe(s->io_base);
 493         outb(0x0, s->io_base);
 494
 495         /*
 496          * Boot the board ... (I think)
 497          */
 498         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 499         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x40);
 500         spin_unlock_irqrestore(&s->lock, flags);
 501
 502         /*
 503          * If all has gone well, then the board should acknowledge
 504          * the new upload and tell us that it has rebooted OK. We
 505          * give it 5 seconds (max) ...
 506          */
 507         ret = 0;
 508         if (!obp_startup_ack(s, 5000)) {
 509                 snd_printk(KERN_ERR "sscape: No response "
 510                                     "from on-board processor after upload\n");
 511                 ret = -EAGAIN;
 512         } else if (!host_startup_ack(s, 5000)) {
 513                 snd_printk(KERN_ERR
 514                                 "sscape: SoundScape failed to initialise\n");
 515                 ret = -EAGAIN;
 516         }
 517
 518 _release_dma:
 519         /*
 520          * NOTE!!! We are NOT holding any spinlocks at this point !!!
 521          */
 522         sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_OPUS ? 0x40 : 0x70));
 523         free_dmabuf(&dma);
 524
 525         return ret;
 526 }
 527
 528 /*
 529  * Upload the bootblock(?) into the SoundScape. The only
 530  * purpose of this block of code seems to be to tell
 531  * us which version of the microcode we should be using.
 532  */
 533 static int sscape_upload_bootblock(struct snd_card *card)
 534 {
 535         struct soundscape *sscape = get_card_soundscape(card);
 536         unsigned long flags;
 537         const struct firmware *init_fw = NULL;
 538         int data = 0;
 539         int ret;
 540
 541         ret = reject_firmware(&init_fw, "/*(DEBLOBBED)*/", card->dev);
 542         if (ret < 0) {
 543                 snd_printk(KERN_ERR "sscape: Error loading /*(DEBLOBBED)*/");
 544                 return ret;
 545         }
 546         ret = upload_dma_data(sscape, init_fw->data, init_fw->size);
 547
 548         release_firmware(init_fw);
 549
 550         spin_lock_irqsave(&sscape->lock, flags);
 551         if (ret == 0)
 552                 data = host_read_ctrl_unsafe(sscape->io_base, 100);
 553
 554         if (data & 0x10)
 555                 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2f);
 556
 557         spin_unlock_irqrestore(&sscape->lock, flags);
 558
 559         data &= 0xf;
 560         if (ret == 0 && data > 7) {
 561                 snd_printk(KERN_ERR
 562                                 "sscape: timeout reading firmware version\n");
 563                 ret = -EAGAIN;
 564         }
 565
 566         return (ret == 0) ? data : ret;
 567 }
 568
 569 /*
 570  * Upload the microcode into the SoundScape.
 571  */
 572 static int sscape_upload_microcode(struct snd_card *card, int version)
 573 {
 574         struct soundscape *sscape = get_card_soundscape(card);
 575         const struct firmware *init_fw = NULL;
 576         char name[14];
 577         int err;
 578
 579         snprintf(name, sizeof(name), "/*(DEBLOBBED)*/", version);
 580
 581         err = reject_firmware(&init_fw, name, card->dev);
 582         if (err < 0) {
 583                 snd_printk(KERN_ERR "sscape: Error loading /*(DEBLOBBED)*/",
 584                                 version);
 585                 return err;
 586         }
 587         err = upload_dma_data(sscape, init_fw->data, init_fw->size);
 588         if (err == 0)
 589                 snd_printk(KERN_INFO "sscape: MIDI firmware loaded %d KBs\n",
 590                                 init_fw->size >> 10);
 591
 592         release_firmware(init_fw);
 593
 594         return err;
 595 }
 596
 597 /*
 598  * Mixer control for the SoundScape's MIDI device.
 599  */
 600 static int sscape_midi_info(struct snd_kcontrol *ctl,
 601                             struct snd_ctl_elem_info *uinfo)
 602 {
 603         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 604         uinfo->count = 1;
 605         uinfo->value.integer.min = 0;
 606         uinfo->value.integer.max = 127;
 607         return 0;
 608 }
 609
 610 static int sscape_midi_get(struct snd_kcontrol *kctl,
 611                            struct snd_ctl_elem_value *uctl)
 612 {
 613         struct snd_wss *chip = snd_kcontrol_chip(kctl);
 614         struct snd_card *card = chip->card;
 615         register struct soundscape *s = get_card_soundscape(card);
 616         unsigned long flags;
 617
 618         spin_lock_irqsave(&s->lock, flags);
 619         uctl->value.integer.value[0] = s->midi_vol;
 620         spin_unlock_irqrestore(&s->lock, flags);
 621         return 0;
 622 }
 623
 624 static int sscape_midi_put(struct snd_kcontrol *kctl,
 625                            struct snd_ctl_elem_value *uctl)
 626 {
 627         struct snd_wss *chip = snd_kcontrol_chip(kctl);
 628         struct snd_card *card = chip->card;
 629         struct soundscape *s = get_card_soundscape(card);
 630         unsigned long flags;
 631         int change;
 632         unsigned char new_val;
 633
 634         spin_lock_irqsave(&s->lock, flags);
 635
 636         new_val = uctl->value.integer.value[0] & 127;
 637         /*
 638          * We need to put the board into HOST mode before we
 639          * can send any volume-changing HOST commands ...
 640          */
 641         set_host_mode_unsafe(s->io_base);
 642
 643         /*
 644          * To successfully change the MIDI volume setting, you seem to
 645          * have to write a volume command, write the new volume value,
 646          * and then perform another volume-related command. Perhaps the
 647          * first command is an "open" and the second command is a "close"?
 648          */
 649         if (s->midi_vol == new_val) {
 650                 change = 0;
 651                 goto __skip_change;
 652         }
 653         change = host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100)
 654                  && host_write_ctrl_unsafe(s->io_base, new_val, 100)
 655                  && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)
 656                  && host_write_ctrl_unsafe(s->io_base, new_val, 100);
 657         s->midi_vol = new_val;
 658 __skip_change:
 659
 660         /*
 661          * Take the board out of HOST mode and back into MIDI mode ...
 662          */
 663         set_midi_mode_unsafe(s->io_base);
 664
 665         spin_unlock_irqrestore(&s->lock, flags);
 666         return change;
 667 }
 668
 669 static struct snd_kcontrol_new midi_mixer_ctl = {
 670         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 671         .name = "MIDI",
 672         .info = sscape_midi_info,
 673         .get = sscape_midi_get,
 674         .put = sscape_midi_put
 675 };
 676
 677 /*
 678  * The SoundScape can use two IRQs from a possible set of four.
 679  * These IRQs are encoded as bit patterns so that they can be
 680  * written to the control registers.
 681  */
 682 static unsigned get_irq_config(int sscape_type, int irq)
 683 {
 684         static const int valid_irq[] = { 9, 5, 7, 10 };
 685         static const int old_irq[] = { 9, 7, 5, 15 };
 686         unsigned cfg;
 687
 688         if (sscape_type == MEDIA_FX) {
 689                 for (cfg = 0; cfg < ARRAY_SIZE(old_irq); ++cfg)
 690                         if (irq == old_irq[cfg])
 691                                 return cfg;
 692         } else {
 693                 for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg)
 694                         if (irq == valid_irq[cfg])
 695                                 return cfg;
 696         }
 697
 698         return INVALID_IRQ;
 699 }
 700
 701 /*
 702  * Perform certain arcane port-checks to see whether there
 703  * is a SoundScape board lurking behind the given ports.
 704  */
 705 static int detect_sscape(struct soundscape *s, long wss_io)
 706 {
 707         unsigned long flags;
 708         unsigned d;
 709         int retval = 0;
 710
 711         spin_lock_irqsave(&s->lock, flags);
 712
 713         /*
 714          * The following code is lifted from the original OSS driver,
 715          * and as I don't have a datasheet I cannot really comment
 716          * on what it is doing...
 717          */
 718         if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0)
 719                 goto _done;
 720
 721         d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0;
 722         if ((d & 0x80) != 0)
 723                 goto _done;
 724
 725         if (d == 0)
 726                 s->ic_type = IC_ODIE;
 727         else if ((d & 0x60) != 0)
 728                 s->ic_type = IC_OPUS;
 729         else
 730                 goto _done;
 731
 732         outb(0xfa, ODIE_ADDR_IO(s->io_base));
 733         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a)
 734                 goto _done;
 735
 736         outb(0xfe, ODIE_ADDR_IO(s->io_base));
 737         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e)
 738                 goto _done;
 739
 740         outb(0xfe, ODIE_ADDR_IO(s->io_base));
 741         d = inb(ODIE_DATA_IO(s->io_base));
 742         if (s->type != SSCAPE_VIVO && (d & 0x9f) != 0x0e)
 743                 goto _done;
 744
 745         if (s->ic_type == IC_OPUS)
 746                 activate_ad1845_unsafe(s->io_base);
 747
 748         if (s->type == SSCAPE_VIVO)
 749                 wss_io += 4;
 750
 751         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 752         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 753
 754         /* wait for WSS codec */
 755         for (d = 0; d < 500; d++) {
 756                 if ((inb(wss_io) & 0x80) == 0)
 757                         break;
 758                 spin_unlock_irqrestore(&s->lock, flags);
 759                 msleep(1);
 760                 spin_lock_irqsave(&s->lock, flags);
 761         }
 762
 763         if ((inb(wss_io) & 0x80) != 0)
 764                 goto _done;
 765
 766         if (inb(wss_io + 2) == 0xff)
 767                 goto _done;
 768
 769         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f;
 770         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d);
 771
 772         if ((inb(wss_io) & 0x80) != 0)
 773                 s->type = MEDIA_FX;
 774
 775         d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 776         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 777         /* wait for WSS codec */
 778         for (d = 0; d < 500; d++) {
 779                 if ((inb(wss_io) & 0x80) == 0)
 780                         break;
 781                 spin_unlock_irqrestore(&s->lock, flags);
 782                 msleep(1);
 783                 spin_lock_irqsave(&s->lock, flags);
 784         }
 785
 786         /*
 787          * SoundScape successfully detected!
 788          */
 789         retval = 1;
 790
 791 _done:
 792         spin_unlock_irqrestore(&s->lock, flags);
 793         return retval;
 794 }
 795
 796 /*
 797  * ALSA callback function, called when attempting to open the MIDI device.
 798  * Check that the MIDI firmware has been loaded, because we don't want
 799  * to crash the machine. Also check that someone isn't using the hardware
 800  * IOCTL device.
 801  */
 802 static int mpu401_open(struct snd_mpu401 *mpu)
 803 {
 804         if (!verify_mpu401(mpu)) {
 805                 snd_printk(KERN_ERR "sscape: MIDI disabled, "
 806                                     "please load firmware\n");
 807                 return -ENODEV;
 808         }
 809
 810         return 0;
 811 }
 812
 813 /*
 814  * Initialse an MPU-401 subdevice for MIDI support on the SoundScape.
 815  */
 816 static int create_mpu401(struct snd_card *card, int devnum,
 817                          unsigned long port, int irq)
 818 {
 819         struct soundscape *sscape = get_card_soundscape(card);
 820         struct snd_rawmidi *rawmidi;
 821         int err;
 822
 823         err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port,
 824                                   MPU401_INFO_INTEGRATED, irq, &rawmidi);
 825         if (err == 0) {
 826                 struct snd_mpu401 *mpu = rawmidi->private_data;
 827                 mpu->open_input = mpu401_open;
 828                 mpu->open_output = mpu401_open;
 829                 mpu->private_data = sscape;
 830
 831                 initialise_mpu401(mpu);
 832         }
 833
 834         return err;
 835 }
 836
 837
 838 /*
 839  * Create an AD1845 PCM subdevice on the SoundScape. The AD1845
 840  * is very much like a CS4231, with a few extra bits. We will
 841  * try to support at least some of the extra bits by overriding
 842  * some of the CS4231 callback.
 843  */
 844 static int create_ad1845(struct snd_card *card, unsigned port,
 845                          int irq, int dma1, int dma2)
 846 {
 847         register struct soundscape *sscape = get_card_soundscape(card);
 848         struct snd_wss *chip;
 849         int err;
 850         int codec_type = WSS_HW_DETECT;
 851
 852         switch (sscape->type) {
 853         case MEDIA_FX:
 854         case SSCAPE:
 855                 /*
 856                  * There are some freak examples of early Soundscape cards
 857                  * with CS4231 instead of AD1848/CS4248. Unfortunately, the
 858                  * CS4231 works only in CS4248 compatibility mode on
 859                  * these cards so force it.
 860                  */
 861                 if (sscape->ic_type != IC_OPUS)
 862                         codec_type = WSS_HW_AD1848;
 863                 break;
 864
 865         case SSCAPE_VIVO:
 866                 port += 4;
 867                 break;
 868         default:
 869                 break;
 870         }
 871
 872         err = snd_wss_create(card, port, -1, irq, dma1, dma2,
 873                              codec_type, WSS_HWSHARE_DMA1, &chip);
 874         if (!err) {
 875                 unsigned long flags;
 876
 877                 if (sscape->type != SSCAPE_VIVO) {
 878                         /*
 879                          * The input clock frequency on the SoundScape must
 880                          * be 14.31818 MHz, because we must set this register
 881                          * to get the playback to sound correct ...
 882                          */
 883                         snd_wss_mce_up(chip);
 884                         spin_lock_irqsave(&chip->reg_lock, flags);
 885                         snd_wss_out(chip, AD1845_CLOCK, 0x20);
 886                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 887                         snd_wss_mce_down(chip);
 888
 889                 }
 890
 891                 err = snd_wss_pcm(chip, 0);
 892                 if (err < 0) {
 893                         snd_printk(KERN_ERR "sscape: No PCM device "
 894                                             "for AD1845 chip\n");
 895                         goto _error;
 896                 }
 897
 898                 err = snd_wss_mixer(chip);
 899                 if (err < 0) {
 900                         snd_printk(KERN_ERR "sscape: No mixer device "
 901                                             "for AD1845 chip\n");
 902                         goto _error;
 903                 }
 904                 if (chip->hardware != WSS_HW_AD1848) {
 905                         err = snd_wss_timer(chip, 0);
 906                         if (err < 0) {
 907                                 snd_printk(KERN_ERR "sscape: No timer device "
 908                                                     "for AD1845 chip\n");
 909                                 goto _error;
 910                         }
 911                 }
 912
 913                 if (sscape->type != SSCAPE_VIVO) {
 914                         err = snd_ctl_add(card,
 915                                           snd_ctl_new1(&midi_mixer_ctl, chip));
 916                         if (err < 0) {
 917                                 snd_printk(KERN_ERR "sscape: Could not create "
 918                                                     "MIDI mixer control\n");
 919                                 goto _error;
 920                         }
 921                 }
 922
 923                 sscape->chip = chip;
 924         }
 925
 926 _error:
 927         return err;
 928 }
 929
 930
 931 /*
 932  * Create an ALSA soundcard entry for the SoundScape, using
 933  * the given list of port, IRQ and DMA resources.
 934  */
 935 static int create_sscape(int dev, struct snd_card *card)
 936 {
 937         struct soundscape *sscape = get_card_soundscape(card);
 938         unsigned dma_cfg;
 939         unsigned irq_cfg;
 940         unsigned mpu_irq_cfg;
 941         struct resource *io_res;
 942         struct resource *wss_res;
 943         unsigned long flags;
 944         int err;
 945         int val;
 946         const char *name;
 947
 948         /*
 949          * Grab IO ports that we will need to probe so that we
 950          * can detect and control this hardware ...
 951          */
 952         io_res = request_region(port[dev], 8, "SoundScape");
 953         if (!io_res) {
 954                 snd_printk(KERN_ERR
 955                            "sscape: can't grab port 0x%lx\n", port[dev]);
 956                 return -EBUSY;
 957         }
 958         wss_res = NULL;
 959         if (sscape->type == SSCAPE_VIVO) {
 960                 wss_res = request_region(wss_port[dev], 4, "SoundScape");
 961                 if (!wss_res) {
 962                         snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n",
 963                                             wss_port[dev]);
 964                         err = -EBUSY;
 965                         goto _release_region;
 966                 }
 967         }
 968
 969         /*
 970          * Grab one DMA channel ...
 971          */
 972         err = request_dma(dma[dev], "SoundScape");
 973         if (err < 0) {
 974                 snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
 975                 goto _release_region;
 976         }
 977
 978         spin_lock_init(&sscape->lock);
 979         sscape->io_res = io_res;
 980         sscape->wss_res = wss_res;
 981         sscape->io_base = port[dev];
 982
 983         if (!detect_sscape(sscape, wss_port[dev])) {
 984                 printk(KERN_ERR "sscape: hardware not detected at 0x%x\n",
 985                         sscape->io_base);
 986                 err = -ENODEV;
 987                 goto _release_dma;
 988         }
 989
 990         switch (sscape->type) {
 991         case MEDIA_FX:
 992                 name = "MediaFX/SoundFX";
 993                 break;
 994         case SSCAPE:
 995                 name = "Soundscape";
 996                 break;
 997         case SSCAPE_PNP:
 998                 name = "Soundscape PnP";
 999                 break;
1000         case SSCAPE_VIVO:
1001                 name = "Soundscape VIVO";
1002                 break;
1003         default:
1004                 name = "unknown Soundscape";
1005                 break;
1006         }
1007
1008         printk(KERN_INFO "sscape: %s card detected at 0x%x, using IRQ %d, DMA %d\n",
1009                          name, sscape->io_base, irq[dev], dma[dev]);
1010
1011         /*
1012          * Check that the user didn't pass us garbage data ...
1013          */
1014         irq_cfg = get_irq_config(sscape->type, irq[dev]);
1015         if (irq_cfg == INVALID_IRQ) {
1016                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
1017                 err = -ENXIO;
1018                 goto _release_dma;
1019         }
1020
1021         mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]);
1022         if (mpu_irq_cfg == INVALID_IRQ) {
1023                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
1024                 err = -ENXIO;
1025                 goto _release_dma;
1026         }
1027
1028         /*
1029          * Tell the on-board devices where their resources are (I think -
1030          * I can't be sure without a datasheet ... So many magic values!)
1031          */
1032         spin_lock_irqsave(&sscape->lock, flags);
1033
1034         sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e);
1035         sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00);
1036
1037         /*
1038          * Enable and configure the DMA channels ...
1039          */
1040         sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50);
1041         dma_cfg = (sscape->ic_type == IC_OPUS ? 0x40 : 0x70);
1042         sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg);
1043         sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20);
1044
1045         mpu_irq_cfg |= mpu_irq_cfg << 2;
1046         val = sscape_read_unsafe(sscape->io_base, GA_HMCTL_REG) & 0xF7;
1047         if (joystick[dev])
1048                 val |= 8;
1049         sscape_write_unsafe(sscape->io_base, GA_HMCTL_REG, val | 0x10);
1050         sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | mpu_irq_cfg);
1051         sscape_write_unsafe(sscape->io_base,
1052                             GA_CDCFG_REG, 0x09 | DMA_8BIT
1053                             | (dma[dev] << 4) | (irq_cfg << 1));
1054         /*
1055          * Enable the master IRQ ...
1056          */
1057         sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x80);
1058
1059         spin_unlock_irqrestore(&sscape->lock, flags);
1060
1061         /*
1062          * We have now enabled the codec chip, and so we should
1063          * detect the AD1845 device ...
1064          */
1065         err = create_ad1845(card, wss_port[dev], irq[dev],
1066                             dma[dev], dma2[dev]);
1067         if (err < 0) {
1068                 snd_printk(KERN_ERR
1069                                 "sscape: No AD1845 device at 0x%lx, IRQ %d\n",
1070                                 wss_port[dev], irq[dev]);
1071                 goto _release_dma;
1072         }
1073         strcpy(card->driver, "SoundScape");
1074         strcpy(card->shortname, name);
1075         snprintf(card->longname, sizeof(card->longname),
1076                  "%s at 0x%lx, IRQ %d, DMA1 %d, DMA2 %d\n",
1077                  name, sscape->chip->port, sscape->chip->irq,
1078                  sscape->chip->dma1, sscape->chip->dma2);
1079
1080 #define MIDI_DEVNUM  0
1081         if (sscape->type != SSCAPE_VIVO) {
1082                 err = sscape_upload_bootblock(card);
1083                 if (err >= 0)
1084                         err = sscape_upload_microcode(card, err);
1085
1086                 if (err == 0) {
1087                         err = create_mpu401(card, MIDI_DEVNUM, port[dev],
1088                                             mpu_irq[dev]);
1089                         if (err < 0) {
1090                                 snd_printk(KERN_ERR "sscape: Failed to create "
1091                                                 "MPU-401 device at 0x%lx\n",
1092                                                 port[dev]);
1093                                 goto _release_dma;
1094                         }
1095
1096                         /*
1097                          * Initialize mixer
1098                          */
1099                         spin_lock_irqsave(&sscape->lock, flags);
1100                         sscape->midi_vol = 0;
1101                         host_write_ctrl_unsafe(sscape->io_base,
1102                                                 CMD_SET_MIDI_VOL, 100);
1103                         host_write_ctrl_unsafe(sscape->io_base,
1104                                                 sscape->midi_vol, 100);
1105                         host_write_ctrl_unsafe(sscape->io_base,
1106                                                 CMD_XXX_MIDI_VOL, 100);
1107                         host_write_ctrl_unsafe(sscape->io_base,
1108                                                 sscape->midi_vol, 100);
1109                         host_write_ctrl_unsafe(sscape->io_base,
1110                                                 CMD_SET_EXTMIDI, 100);
1111                         host_write_ctrl_unsafe(sscape->io_base,
1112                                                 0, 100);
1113                         host_write_ctrl_unsafe(sscape->io_base, CMD_ACK, 100);
1114
1115                         set_midi_mode_unsafe(sscape->io_base);
1116                         spin_unlock_irqrestore(&sscape->lock, flags);
1117                 }
1118         }
1119
1120         /*
1121          * Now that we have successfully created this sound card,
1122          * it is safe to store the pointer.
1123          * NOTE: we only register the sound card's "destructor"
1124          *       function now that our "constructor" has completed.
1125          */
1126         card->private_free = soundscape_free;
1127
1128         return 0;
1129
1130 _release_dma:
1131         free_dma(dma[dev]);
1132
1133 _release_region:
1134         release_and_free_resource(wss_res);
1135         release_and_free_resource(io_res);
1136
1137         return err;
1138 }
1139
1140
1141 static int snd_sscape_match(struct device *pdev, unsigned int i)
1142 {
1143         /*
1144          * Make sure we were given ALL of the other parameters.
1145          */
1146         if (port[i] == SNDRV_AUTO_PORT)
1147                 return 0;
1148
1149         if (irq[i] == SNDRV_AUTO_IRQ ||
1150             mpu_irq[i] == SNDRV_AUTO_IRQ ||
1151             dma[i] == SNDRV_AUTO_DMA) {
1152                 printk(KERN_INFO
1153                        "sscape: insufficient parameters, "
1154                        "need IO, IRQ, MPU-IRQ and DMA\n");
1155                 return 0;
1156         }
1157
1158         return 1;
1159 }
1160
1161 static int snd_sscape_probe(struct device *pdev, unsigned int dev)
1162 {
1163         struct snd_card *card;
1164         struct soundscape *sscape;
1165         int ret;
1166
1167         ret = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
1168                            sizeof(struct soundscape), &card);
1169         if (ret < 0)
1170                 return ret;
1171
1172         sscape = get_card_soundscape(card);
1173         sscape->type = SSCAPE;
1174
1175         dma[dev] &= 0x03;
1176
1177         ret = create_sscape(dev, card);
1178         if (ret < 0)
1179                 goto _release_card;
1180
1181         ret = snd_card_register(card);
1182         if (ret < 0) {
1183                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1184                 goto _release_card;
1185         }
1186         dev_set_drvdata(pdev, card);
1187         return 0;
1188
1189 _release_card:
1190         snd_card_free(card);
1191         return ret;
1192 }
1193
1194 static int snd_sscape_remove(struct device *devptr, unsigned int dev)
1195 {
1196         snd_card_free(dev_get_drvdata(devptr));
1197         return 0;
1198 }
1199
1200 #define DEV_NAME "sscape"
1201
1202 static struct isa_driver snd_sscape_driver = {
1203         .match          = snd_sscape_match,
1204         .probe          = snd_sscape_probe,
1205         .remove         = snd_sscape_remove,
1206         /* FIXME: suspend/resume */
1207         .driver         = {
1208                 .name   = DEV_NAME
1209         },
1210 };
1211
1212 #ifdef CONFIG_PNP
1213 static inline int get_next_autoindex(int i)
1214 {
1215         while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT)
1216                 ++i;
1217         return i;
1218 }
1219
1220
1221 static int sscape_pnp_detect(struct pnp_card_link *pcard,
1222                              const struct pnp_card_device_id *pid)
1223 {
1224         static int idx = 0;
1225         struct pnp_dev *dev;
1226         struct snd_card *card;
1227         struct soundscape *sscape;
1228         int ret;
1229
1230         /*
1231          * Allow this function to fail *quietly* if all the ISA PnP
1232          * devices were configured using module parameters instead.
1233          */
1234         idx = get_next_autoindex(idx);
1235         if (idx >= SNDRV_CARDS)
1236                 return -ENOSPC;
1237
1238         /*
1239          * Check that we still have room for another sound card ...
1240          */
1241         dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
1242         if (!dev)
1243                 return -ENODEV;
1244
1245         if (!pnp_is_active(dev)) {
1246                 if (pnp_activate_dev(dev) < 0) {
1247                         snd_printk(KERN_INFO "sscape: device is inactive\n");
1248                         return -EBUSY;
1249                 }
1250         }
1251
1252         /*
1253          * Create a new ALSA sound card entry, in anticipation
1254          * of detecting our hardware ...
1255          */
1256         ret = snd_card_new(&pcard->card->dev,
1257                            index[idx], id[idx], THIS_MODULE,
1258                            sizeof(struct soundscape), &card);
1259         if (ret < 0)
1260                 return ret;
1261
1262         sscape = get_card_soundscape(card);
1263
1264         /*
1265          * Identify card model ...
1266          */
1267         if (!strncmp("ENS4081", pid->id, 7))
1268                 sscape->type = SSCAPE_VIVO;
1269         else
1270                 sscape->type = SSCAPE_PNP;
1271
1272         /*
1273          * Read the correct parameters off the ISA PnP bus ...
1274          */
1275         port[idx] = pnp_port_start(dev, 0);
1276         irq[idx] = pnp_irq(dev, 0);
1277         mpu_irq[idx] = pnp_irq(dev, 1);
1278         dma[idx] = pnp_dma(dev, 0) & 0x03;
1279         if (sscape->type == SSCAPE_PNP) {
1280                 dma2[idx] = dma[idx];
1281                 wss_port[idx] = CODEC_IO(port[idx]);
1282         } else {
1283                 wss_port[idx] = pnp_port_start(dev, 1);
1284                 dma2[idx] = pnp_dma(dev, 1);
1285         }
1286
1287         ret = create_sscape(idx, card);
1288         if (ret < 0)
1289                 goto _release_card;
1290
1291         ret = snd_card_register(card);
1292         if (ret < 0) {
1293                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1294                 goto _release_card;
1295         }
1296
1297         pnp_set_card_drvdata(pcard, card);
1298         ++idx;
1299         return 0;
1300
1301 _release_card:
1302         snd_card_free(card);
1303         return ret;
1304 }
1305
1306 static void sscape_pnp_remove(struct pnp_card_link *pcard)
1307 {
1308         snd_card_free(pnp_get_card_drvdata(pcard));
1309         pnp_set_card_drvdata(pcard, NULL);
1310 }
1311
1312 static struct pnp_card_driver sscape_pnpc_driver = {
1313         .flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
1314         .name = "sscape",
1315         .id_table = sscape_pnpids,
1316         .probe = sscape_pnp_detect,
1317         .remove = sscape_pnp_remove,
1318 };
1319
1320 #endif /* CONFIG_PNP */
1321
1322 static int __init sscape_init(void)
1323 {
1324         int err;
1325
1326         err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS);
1327 #ifdef CONFIG_PNP
1328         if (!err)
1329                 isa_registered = 1;
1330
1331         err = pnp_register_card_driver(&sscape_pnpc_driver);
1332         if (!err)
1333                 pnp_registered = 1;
1334
1335         if (isa_registered)
1336                 err = 0;
1337 #endif
1338         return err;
1339 }
1340
1341 static void __exit sscape_exit(void)
1342 {
1343 #ifdef CONFIG_PNP
1344         if (pnp_registered)
1345                 pnp_unregister_card_driver(&sscape_pnpc_driver);
1346         if (isa_registered)
1347 #endif
1348                 isa_unregister_driver(&snd_sscape_driver);
1349 }
1350
1351 module_init(sscape_init);
1352 module_exit(sscape_exit);