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 MODULE_FIRMWARE("sndscape.co0");
  44 MODULE_FIRMWARE("sndscape.co1");
  45 MODULE_FIRMWARE("sndscape.co2");
  46 MODULE_FIRMWARE("sndscape.co3");
  47 MODULE_FIRMWARE("sndscape.co4");
  48 MODULE_FIRMWARE("scope.cod");
  49
  50 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  51 static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  52 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  53 static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  54 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  55 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  56 static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  57 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  58 static bool joystick[SNDRV_CARDS];
  59
  60 module_param_array(index, int, NULL, 0444);
  61 MODULE_PARM_DESC(index, "Index number for SoundScape soundcard");
  62
  63 module_param_array(id, charp, NULL, 0444);
  64 MODULE_PARM_DESC(id, "Description for SoundScape card");
  65
  66 module_param_hw_array(port, long, ioport, NULL, 0444);
  67 MODULE_PARM_DESC(port, "Port # for SoundScape driver.");
  68
  69 module_param_hw_array(wss_port, long, ioport, NULL, 0444);
  70 MODULE_PARM_DESC(wss_port, "WSS Port # for SoundScape driver.");
  71
  72 module_param_hw_array(irq, int, irq, NULL, 0444);
  73 MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver.");
  74
  75 module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
  76 MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver.");
  77
  78 module_param_hw_array(dma, int, dma, NULL, 0444);
  79 MODULE_PARM_DESC(dma, "DMA # for SoundScape driver.");
  80
  81 module_param_hw_array(dma2, int, dma, NULL, 0444);
  82 MODULE_PARM_DESC(dma2, "DMA2 # for SoundScape driver.");
  83
  84 module_param_array(joystick, bool, NULL, 0444);
  85 MODULE_PARM_DESC(joystick, "Enable gameport.");
  86
  87 #ifdef CONFIG_PNP
  88 static int isa_registered;
  89 static int pnp_registered;
  90
  91 static const struct pnp_card_device_id sscape_pnpids[] = {
  92         { .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */
  93         { .id = "ENS4081", .devs = { { "ENS1011" } } }, /* VIVO90 */
  94         { .id = "" }    /* end */
  95 };
  96
  97 MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids);
  98 #endif
  99
 100
 101 #define HOST_CTRL_IO(i)  ((i) + 2)
 102 #define HOST_DATA_IO(i)  ((i) + 3)
 103 #define ODIE_ADDR_IO(i)  ((i) + 4)
 104 #define ODIE_DATA_IO(i)  ((i) + 5)
 105 #define CODEC_IO(i)      ((i) + 8)
 106
 107 #define IC_ODIE  1
 108 #define IC_OPUS  2
 109
 110 #define RX_READY 0x01
 111 #define TX_READY 0x02
 112
 113 #define CMD_ACK                 0x80
 114 #define CMD_SET_MIDI_VOL        0x84
 115 #define CMD_GET_MIDI_VOL        0x85
 116 #define CMD_XXX_MIDI_VOL        0x86
 117 #define CMD_SET_EXTMIDI         0x8a
 118 #define CMD_GET_EXTMIDI         0x8b
 119 #define CMD_SET_MT32            0x8c
 120 #define CMD_GET_MT32            0x8d
 121
 122 enum GA_REG {
 123         GA_INTSTAT_REG = 0,
 124         GA_INTENA_REG,
 125         GA_DMAA_REG,
 126         GA_DMAB_REG,
 127         GA_INTCFG_REG,
 128         GA_DMACFG_REG,
 129         GA_CDCFG_REG,
 130         GA_SMCFGA_REG,
 131         GA_SMCFGB_REG,
 132         GA_HMCTL_REG
 133 };
 134
 135 #define DMA_8BIT  0x80
 136
 137
 138 enum card_type {
 139         MEDIA_FX,       /* Sequoia S-1000 */
 140         SSCAPE,         /* Sequoia S-2000 */
 141         SSCAPE_PNP,
 142         SSCAPE_VIVO,
 143 };
 144
 145 struct soundscape {
 146         spinlock_t lock;
 147         unsigned io_base;
 148         int ic_type;
 149         enum card_type type;
 150         struct resource *io_res;
 151         struct resource *wss_res;
 152         struct snd_wss *chip;
 153
 154         unsigned char midi_vol;
 155 };
 156
 157 #define INVALID_IRQ  ((unsigned)-1)
 158
 159
 160 static inline struct soundscape *get_card_soundscape(struct snd_card *c)
 161 {
 162         return (struct soundscape *) (c->private_data);
 163 }
 164
 165 /*
 166  * Allocates some kernel memory that we can use for DMA.
 167  * I think this means that the memory has to map to
 168  * contiguous pages of physical memory.
 169  */
 170 static struct snd_dma_buffer *get_dmabuf(struct soundscape *s,
 171                                          struct snd_dma_buffer *buf,
 172                                          unsigned long size)
 173 {
 174         if (buf) {
 175                 if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV,
 176                                                  s->chip->card->dev,
 177                                                  size, buf) < 0) {
 178                         snd_printk(KERN_ERR "sscape: Failed to allocate "
 179                                             "%lu bytes for DMA\n",
 180                                             size);
 181                         return NULL;
 182                 }
 183         }
 184
 185         return buf;
 186 }
 187
 188 /*
 189  * Release the DMA-able kernel memory ...
 190  */
 191 static void free_dmabuf(struct snd_dma_buffer *buf)
 192 {
 193         if (buf && buf->area)
 194                 snd_dma_free_pages(buf);
 195 }
 196
 197 /*
 198  * This function writes to the SoundScape's control registers,
 199  * but doesn't do any locking. It's up to the caller to do that.
 200  * This is why this function is "unsafe" ...
 201  */
 202 static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg,
 203                                        unsigned char val)
 204 {
 205         outb(reg, ODIE_ADDR_IO(io_base));
 206         outb(val, ODIE_DATA_IO(io_base));
 207 }
 208
 209 /*
 210  * Write to the SoundScape's control registers, and do the
 211  * necessary locking ...
 212  */
 213 static void sscape_write(struct soundscape *s, enum GA_REG reg,
 214                          unsigned char val)
 215 {
 216         unsigned long flags;
 217
 218         spin_lock_irqsave(&s->lock, flags);
 219         sscape_write_unsafe(s->io_base, reg, val);
 220         spin_unlock_irqrestore(&s->lock, flags);
 221 }
 222
 223 /*
 224  * Read from the SoundScape's control registers, but leave any
 225  * locking to the caller. This is why the function is "unsafe" ...
 226  */
 227 static inline unsigned char sscape_read_unsafe(unsigned io_base,
 228                                                enum GA_REG reg)
 229 {
 230         outb(reg, ODIE_ADDR_IO(io_base));
 231         return inb(ODIE_DATA_IO(io_base));
 232 }
 233
 234 /*
 235  * Puts the SoundScape into "host" mode, as compared to "MIDI" mode
 236  */
 237 static inline void set_host_mode_unsafe(unsigned io_base)
 238 {
 239         outb(0x0, HOST_CTRL_IO(io_base));
 240 }
 241
 242 /*
 243  * Puts the SoundScape into "MIDI" mode, as compared to "host" mode
 244  */
 245 static inline void set_midi_mode_unsafe(unsigned io_base)
 246 {
 247         outb(0x3, HOST_CTRL_IO(io_base));
 248 }
 249
 250 /*
 251  * Read the SoundScape's host-mode control register, but leave
 252  * any locking issues to the caller ...
 253  */
 254 static inline int host_read_unsafe(unsigned io_base)
 255 {
 256         int data = -1;
 257         if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0)
 258                 data = inb(HOST_DATA_IO(io_base));
 259
 260         return data;
 261 }
 262
 263 /*
 264  * Read the SoundScape's host-mode control register, performing
 265  * a limited amount of busy-waiting if the register isn't ready.
 266  * Also leaves all locking-issues to the caller ...
 267  */
 268 static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout)
 269 {
 270         int data;
 271
 272         while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) {
 273                 udelay(100);
 274                 --timeout;
 275         } /* while */
 276
 277         return data;
 278 }
 279
 280 /*
 281  * Write to the SoundScape's host-mode control registers, but
 282  * leave any locking issues to the caller ...
 283  */
 284 static inline int host_write_unsafe(unsigned io_base, unsigned char data)
 285 {
 286         if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) {
 287                 outb(data, HOST_DATA_IO(io_base));
 288                 return 1;
 289         }
 290
 291         return 0;
 292 }
 293
 294 /*
 295  * Write to the SoundScape's host-mode control registers, performing
 296  * a limited amount of busy-waiting if the register isn't ready.
 297  * Also leaves all locking-issues to the caller ...
 298  */
 299 static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data,
 300                                   unsigned timeout)
 301 {
 302         int err;
 303
 304         while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) {
 305                 udelay(100);
 306                 --timeout;
 307         } /* while */
 308
 309         return err;
 310 }
 311
 312
 313 /*
 314  * Check that the MIDI subsystem is operational. If it isn't,
 315  * then we will hang the computer if we try to use it ...
 316  *
 317  * NOTE: This check is based upon observation, not documentation.
 318  */
 319 static inline int verify_mpu401(const struct snd_mpu401 *mpu)
 320 {
 321         return ((inb(MPU401C(mpu)) & 0xc0) == 0x80);
 322 }
 323
 324 /*
 325  * This is apparently the standard way to initailise an MPU-401
 326  */
 327 static inline void initialise_mpu401(const struct snd_mpu401 *mpu)
 328 {
 329         outb(0, MPU401D(mpu));
 330 }
 331
 332 /*
 333  * Tell the SoundScape to activate the AD1845 chip (I think).
 334  * The AD1845 detection fails if we *don't* do this, so I
 335  * think that this is a good idea ...
 336  */
 337 static void activate_ad1845_unsafe(unsigned io_base)
 338 {
 339         unsigned char val = sscape_read_unsafe(io_base, GA_HMCTL_REG);
 340         sscape_write_unsafe(io_base, GA_HMCTL_REG, (val & 0xcf) | 0x10);
 341         sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80);
 342 }
 343
 344 /*
 345  * Do the necessary ALSA-level cleanup to deallocate our driver ...
 346  */
 347 static void soundscape_free(struct snd_card *c)
 348 {
 349         struct soundscape *sscape = get_card_soundscape(c);
 350         release_and_free_resource(sscape->io_res);
 351         release_and_free_resource(sscape->wss_res);
 352         free_dma(sscape->chip->dma1);
 353 }
 354
 355 /*
 356  * Tell the SoundScape to begin a DMA tranfer using the given channel.
 357  * All locking issues are left to the caller.
 358  */
 359 static void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg)
 360 {
 361         sscape_write_unsafe(io_base, reg,
 362                             sscape_read_unsafe(io_base, reg) | 0x01);
 363         sscape_write_unsafe(io_base, reg,
 364                             sscape_read_unsafe(io_base, reg) & 0xfe);
 365 }
 366
 367 /*
 368  * Wait for a DMA transfer to complete. This is a "limited busy-wait",
 369  * and all locking issues are left to the caller.
 370  */
 371 static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg,
 372                                   unsigned timeout)
 373 {
 374         while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) {
 375                 udelay(100);
 376                 --timeout;
 377         } /* while */
 378
 379         return sscape_read_unsafe(io_base, reg) & 0x01;
 380 }
 381
 382 /*
 383  * Wait for the On-Board Processor to return its start-up
 384  * acknowledgement sequence. This wait is too long for
 385  * us to perform "busy-waiting", and so we must sleep.
 386  * This in turn means that we must not be holding any
 387  * spinlocks when we call this function.
 388  */
 389 static int obp_startup_ack(struct soundscape *s, unsigned timeout)
 390 {
 391         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 392
 393         do {
 394                 unsigned long flags;
 395                 int x;
 396
 397                 spin_lock_irqsave(&s->lock, flags);
 398                 x = host_read_unsafe(s->io_base);
 399                 spin_unlock_irqrestore(&s->lock, flags);
 400                 if (x == 0xfe || x == 0xff)
 401                         return 1;
 402
 403                 msleep(10);
 404         } while (time_before(jiffies, end_time));
 405
 406         return 0;
 407 }
 408
 409 /*
 410  * Wait for the host to return its start-up acknowledgement
 411  * sequence. This wait is too long for us to perform
 412  * "busy-waiting", and so we must sleep. This in turn means
 413  * that we must not be holding any spinlocks when we call
 414  * this function.
 415  */
 416 static int host_startup_ack(struct soundscape *s, unsigned timeout)
 417 {
 418         unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 419
 420         do {
 421                 unsigned long flags;
 422                 int x;
 423
 424                 spin_lock_irqsave(&s->lock, flags);
 425                 x = host_read_unsafe(s->io_base);
 426                 spin_unlock_irqrestore(&s->lock, flags);
 427                 if (x == 0xfe)
 428                         return 1;
 429
 430                 msleep(10);
 431         } while (time_before(jiffies, end_time));
 432
 433         return 0;
 434 }
 435
 436 /*
 437  * Upload a byte-stream into the SoundScape using DMA channel A.
 438  */
 439 static int upload_dma_data(struct soundscape *s, const unsigned char *data,
 440                            size_t size)
 441 {
 442         unsigned long flags;
 443         struct snd_dma_buffer dma;
 444         int ret;
 445         unsigned char val;
 446
 447         if (!get_dmabuf(s, &dma, PAGE_ALIGN(32 * 1024)))
 448                 return -ENOMEM;
 449
 450         spin_lock_irqsave(&s->lock, flags);
 451
 452         /*
 453          * Reset the board ...
 454          */
 455         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 456         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val & 0x3f);
 457
 458         /*
 459          * Enable the DMA channels and configure them ...
 460          */
 461         val = (s->chip->dma1 << 4) | DMA_8BIT;
 462         sscape_write_unsafe(s->io_base, GA_DMAA_REG, val);
 463         sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20);
 464
 465         /*
 466          * Take the board out of reset ...
 467          */
 468         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 469         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x80);
 470
 471         /*
 472          * Upload the firmware to the SoundScape
 473          * board through the DMA channel ...
 474          */
 475         while (size != 0) {
 476                 unsigned long len;
 477
 478                 len = min(size, dma.bytes);
 479                 memcpy(dma.area, data, len);
 480                 data += len;
 481                 size -= len;
 482
 483                 snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE);
 484                 sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG);
 485                 if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) {
 486                         /*
 487                          * Don't forget to release this spinlock we're holding
 488                          */
 489                         spin_unlock_irqrestore(&s->lock, flags);
 490
 491                         snd_printk(KERN_ERR
 492                                         "sscape: DMA upload has timed out\n");
 493                         ret = -EAGAIN;
 494                         goto _release_dma;
 495                 }
 496         } /* while */
 497
 498         set_host_mode_unsafe(s->io_base);
 499         outb(0x0, s->io_base);
 500
 501         /*
 502          * Boot the board ... (I think)
 503          */
 504         val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 505         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x40);
 506         spin_unlock_irqrestore(&s->lock, flags);
 507
 508         /*
 509          * If all has gone well, then the board should acknowledge
 510          * the new upload and tell us that it has rebooted OK. We
 511          * give it 5 seconds (max) ...
 512          */
 513         ret = 0;
 514         if (!obp_startup_ack(s, 5000)) {
 515                 snd_printk(KERN_ERR "sscape: No response "
 516                                     "from on-board processor after upload\n");
 517                 ret = -EAGAIN;
 518         } else if (!host_startup_ack(s, 5000)) {
 519                 snd_printk(KERN_ERR
 520                                 "sscape: SoundScape failed to initialise\n");
 521                 ret = -EAGAIN;
 522         }
 523
 524 _release_dma:
 525         /*
 526          * NOTE!!! We are NOT holding any spinlocks at this point !!!
 527          */
 528         sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_OPUS ? 0x40 : 0x70));
 529         free_dmabuf(&dma);
 530
 531         return ret;
 532 }
 533
 534 /*
 535  * Upload the bootblock(?) into the SoundScape. The only
 536  * purpose of this block of code seems to be to tell
 537  * us which version of the microcode we should be using.
 538  */
 539 static int sscape_upload_bootblock(struct snd_card *card)
 540 {
 541         struct soundscape *sscape = get_card_soundscape(card);
 542         unsigned long flags;
 543         const struct firmware *init_fw = NULL;
 544         int data = 0;
 545         int ret;
 546
 547         ret = request_firmware(&init_fw, "scope.cod", card->dev);
 548         if (ret < 0) {
 549                 snd_printk(KERN_ERR "sscape: Error loading scope.cod");
 550                 return ret;
 551         }
 552         ret = upload_dma_data(sscape, init_fw->data, init_fw->size);
 553
 554         release_firmware(init_fw);
 555
 556         spin_lock_irqsave(&sscape->lock, flags);
 557         if (ret == 0)
 558                 data = host_read_ctrl_unsafe(sscape->io_base, 100);
 559
 560         if (data & 0x10)
 561                 sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2f);
 562
 563         spin_unlock_irqrestore(&sscape->lock, flags);
 564
 565         data &= 0xf;
 566         if (ret == 0 && data > 7) {
 567                 snd_printk(KERN_ERR
 568                                 "sscape: timeout reading firmware version\n");
 569                 ret = -EAGAIN;
 570         }
 571
 572         return (ret == 0) ? data : ret;
 573 }
 574
 575 /*
 576  * Upload the microcode into the SoundScape.
 577  */
 578 static int sscape_upload_microcode(struct snd_card *card, int version)
 579 {
 580         struct soundscape *sscape = get_card_soundscape(card);
 581         const struct firmware *init_fw = NULL;
 582         char name[14];
 583         int err;
 584
 585         snprintf(name, sizeof(name), "sndscape.co%d", version);
 586
 587         err = request_firmware(&init_fw, name, card->dev);
 588         if (err < 0) {
 589                 snd_printk(KERN_ERR "sscape: Error loading sndscape.co%d",
 590                                 version);
 591                 return err;
 592         }
 593         err = upload_dma_data(sscape, init_fw->data, init_fw->size);
 594         if (err == 0)
 595                 snd_printk(KERN_INFO "sscape: MIDI firmware loaded %zu KBs\n",
 596                                 init_fw->size >> 10);
 597
 598         release_firmware(init_fw);
 599
 600         return err;
 601 }
 602
 603 /*
 604  * Mixer control for the SoundScape's MIDI device.
 605  */
 606 static int sscape_midi_info(struct snd_kcontrol *ctl,
 607                             struct snd_ctl_elem_info *uinfo)
 608 {
 609         uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 610         uinfo->count = 1;
 611         uinfo->value.integer.min = 0;
 612         uinfo->value.integer.max = 127;
 613         return 0;
 614 }
 615
 616 static int sscape_midi_get(struct snd_kcontrol *kctl,
 617                            struct snd_ctl_elem_value *uctl)
 618 {
 619         struct snd_wss *chip = snd_kcontrol_chip(kctl);
 620         struct snd_card *card = chip->card;
 621         register struct soundscape *s = get_card_soundscape(card);
 622         unsigned long flags;
 623
 624         spin_lock_irqsave(&s->lock, flags);
 625         uctl->value.integer.value[0] = s->midi_vol;
 626         spin_unlock_irqrestore(&s->lock, flags);
 627         return 0;
 628 }
 629
 630 static int sscape_midi_put(struct snd_kcontrol *kctl,
 631                            struct snd_ctl_elem_value *uctl)
 632 {
 633         struct snd_wss *chip = snd_kcontrol_chip(kctl);
 634         struct snd_card *card = chip->card;
 635         struct soundscape *s = get_card_soundscape(card);
 636         unsigned long flags;
 637         int change;
 638         unsigned char new_val;
 639
 640         spin_lock_irqsave(&s->lock, flags);
 641
 642         new_val = uctl->value.integer.value[0] & 127;
 643         /*
 644          * We need to put the board into HOST mode before we
 645          * can send any volume-changing HOST commands ...
 646          */
 647         set_host_mode_unsafe(s->io_base);
 648
 649         /*
 650          * To successfully change the MIDI volume setting, you seem to
 651          * have to write a volume command, write the new volume value,
 652          * and then perform another volume-related command. Perhaps the
 653          * first command is an "open" and the second command is a "close"?
 654          */
 655         if (s->midi_vol == new_val) {
 656                 change = 0;
 657                 goto __skip_change;
 658         }
 659         change = host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100)
 660                  && host_write_ctrl_unsafe(s->io_base, new_val, 100)
 661                  && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)
 662                  && host_write_ctrl_unsafe(s->io_base, new_val, 100);
 663         s->midi_vol = new_val;
 664 __skip_change:
 665
 666         /*
 667          * Take the board out of HOST mode and back into MIDI mode ...
 668          */
 669         set_midi_mode_unsafe(s->io_base);
 670
 671         spin_unlock_irqrestore(&s->lock, flags);
 672         return change;
 673 }
 674
 675 static const struct snd_kcontrol_new midi_mixer_ctl = {
 676         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 677         .name = "MIDI",
 678         .info = sscape_midi_info,
 679         .get = sscape_midi_get,
 680         .put = sscape_midi_put
 681 };
 682
 683 /*
 684  * The SoundScape can use two IRQs from a possible set of four.
 685  * These IRQs are encoded as bit patterns so that they can be
 686  * written to the control registers.
 687  */
 688 static unsigned get_irq_config(int sscape_type, int irq)
 689 {
 690         static const int valid_irq[] = { 9, 5, 7, 10 };
 691         static const int old_irq[] = { 9, 7, 5, 15 };
 692         unsigned cfg;
 693
 694         if (sscape_type == MEDIA_FX) {
 695                 for (cfg = 0; cfg < ARRAY_SIZE(old_irq); ++cfg)
 696                         if (irq == old_irq[cfg])
 697                                 return cfg;
 698         } else {
 699                 for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg)
 700                         if (irq == valid_irq[cfg])
 701                                 return cfg;
 702         }
 703
 704         return INVALID_IRQ;
 705 }
 706
 707 /*
 708  * Perform certain arcane port-checks to see whether there
 709  * is a SoundScape board lurking behind the given ports.
 710  */
 711 static int detect_sscape(struct soundscape *s, long wss_io)
 712 {
 713         unsigned long flags;
 714         unsigned d;
 715         int retval = 0;
 716
 717         spin_lock_irqsave(&s->lock, flags);
 718
 719         /*
 720          * The following code is lifted from the original OSS driver,
 721          * and as I don't have a datasheet I cannot really comment
 722          * on what it is doing...
 723          */
 724         if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0)
 725                 goto _done;
 726
 727         d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0;
 728         if ((d & 0x80) != 0)
 729                 goto _done;
 730
 731         if (d == 0)
 732                 s->ic_type = IC_ODIE;
 733         else if ((d & 0x60) != 0)
 734                 s->ic_type = IC_OPUS;
 735         else
 736                 goto _done;
 737
 738         outb(0xfa, ODIE_ADDR_IO(s->io_base));
 739         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a)
 740                 goto _done;
 741
 742         outb(0xfe, ODIE_ADDR_IO(s->io_base));
 743         if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e)
 744                 goto _done;
 745
 746         outb(0xfe, ODIE_ADDR_IO(s->io_base));
 747         d = inb(ODIE_DATA_IO(s->io_base));
 748         if (s->type != SSCAPE_VIVO && (d & 0x9f) != 0x0e)
 749                 goto _done;
 750
 751         if (s->ic_type == IC_OPUS)
 752                 activate_ad1845_unsafe(s->io_base);
 753
 754         if (s->type == SSCAPE_VIVO)
 755                 wss_io += 4;
 756
 757         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 758         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 759
 760         /* wait for WSS codec */
 761         for (d = 0; d < 500; d++) {
 762                 if ((inb(wss_io) & 0x80) == 0)
 763                         break;
 764                 spin_unlock_irqrestore(&s->lock, flags);
 765                 msleep(1);
 766                 spin_lock_irqsave(&s->lock, flags);
 767         }
 768
 769         if ((inb(wss_io) & 0x80) != 0)
 770                 goto _done;
 771
 772         if (inb(wss_io + 2) == 0xff)
 773                 goto _done;
 774
 775         d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f;
 776         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d);
 777
 778         if ((inb(wss_io) & 0x80) != 0)
 779                 s->type = MEDIA_FX;
 780
 781         d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 782         sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 783         /* wait for WSS codec */
 784         for (d = 0; d < 500; d++) {
 785                 if ((inb(wss_io) & 0x80) == 0)
 786                         break;
 787                 spin_unlock_irqrestore(&s->lock, flags);
 788                 msleep(1);
 789                 spin_lock_irqsave(&s->lock, flags);
 790         }
 791
 792         /*
 793          * SoundScape successfully detected!
 794          */
 795         retval = 1;
 796
 797 _done:
 798         spin_unlock_irqrestore(&s->lock, flags);
 799         return retval;
 800 }
 801
 802 /*
 803  * ALSA callback function, called when attempting to open the MIDI device.
 804  * Check that the MIDI firmware has been loaded, because we don't want
 805  * to crash the machine. Also check that someone isn't using the hardware
 806  * IOCTL device.
 807  */
 808 static int mpu401_open(struct snd_mpu401 *mpu)
 809 {
 810         if (!verify_mpu401(mpu)) {
 811                 snd_printk(KERN_ERR "sscape: MIDI disabled, "
 812                                     "please load firmware\n");
 813                 return -ENODEV;
 814         }
 815
 816         return 0;
 817 }
 818
 819 /*
 820  * Initialse an MPU-401 subdevice for MIDI support on the SoundScape.
 821  */
 822 static int create_mpu401(struct snd_card *card, int devnum,
 823                          unsigned long port, int irq)
 824 {
 825         struct soundscape *sscape = get_card_soundscape(card);
 826         struct snd_rawmidi *rawmidi;
 827         int err;
 828
 829         err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port,
 830                                   MPU401_INFO_INTEGRATED, irq, &rawmidi);
 831         if (err == 0) {
 832                 struct snd_mpu401 *mpu = rawmidi->private_data;
 833                 mpu->open_input = mpu401_open;
 834                 mpu->open_output = mpu401_open;
 835                 mpu->private_data = sscape;
 836
 837                 initialise_mpu401(mpu);
 838         }
 839
 840         return err;
 841 }
 842
 843
 844 /*
 845  * Create an AD1845 PCM subdevice on the SoundScape. The AD1845
 846  * is very much like a CS4231, with a few extra bits. We will
 847  * try to support at least some of the extra bits by overriding
 848  * some of the CS4231 callback.
 849  */
 850 static int create_ad1845(struct snd_card *card, unsigned port,
 851                          int irq, int dma1, int dma2)
 852 {
 853         register struct soundscape *sscape = get_card_soundscape(card);
 854         struct snd_wss *chip;
 855         int err;
 856         int codec_type = WSS_HW_DETECT;
 857
 858         switch (sscape->type) {
 859         case MEDIA_FX:
 860         case SSCAPE:
 861                 /*
 862                  * There are some freak examples of early Soundscape cards
 863                  * with CS4231 instead of AD1848/CS4248. Unfortunately, the
 864                  * CS4231 works only in CS4248 compatibility mode on
 865                  * these cards so force it.
 866                  */
 867                 if (sscape->ic_type != IC_OPUS)
 868                         codec_type = WSS_HW_AD1848;
 869                 break;
 870
 871         case SSCAPE_VIVO:
 872                 port += 4;
 873                 break;
 874         default:
 875                 break;
 876         }
 877
 878         err = snd_wss_create(card, port, -1, irq, dma1, dma2,
 879                              codec_type, WSS_HWSHARE_DMA1, &chip);
 880         if (!err) {
 881                 unsigned long flags;
 882
 883                 if (sscape->type != SSCAPE_VIVO) {
 884                         /*
 885                          * The input clock frequency on the SoundScape must
 886                          * be 14.31818 MHz, because we must set this register
 887                          * to get the playback to sound correct ...
 888                          */
 889                         snd_wss_mce_up(chip);
 890                         spin_lock_irqsave(&chip->reg_lock, flags);
 891                         snd_wss_out(chip, AD1845_CLOCK, 0x20);
 892                         spin_unlock_irqrestore(&chip->reg_lock, flags);
 893                         snd_wss_mce_down(chip);
 894
 895                 }
 896
 897                 err = snd_wss_pcm(chip, 0);
 898                 if (err < 0) {
 899                         snd_printk(KERN_ERR "sscape: No PCM device "
 900                                             "for AD1845 chip\n");
 901                         goto _error;
 902                 }
 903
 904                 err = snd_wss_mixer(chip);
 905                 if (err < 0) {
 906                         snd_printk(KERN_ERR "sscape: No mixer device "
 907                                             "for AD1845 chip\n");
 908                         goto _error;
 909                 }
 910                 if (chip->hardware != WSS_HW_AD1848) {
 911                         err = snd_wss_timer(chip, 0);
 912                         if (err < 0) {
 913                                 snd_printk(KERN_ERR "sscape: No timer device "
 914                                                     "for AD1845 chip\n");
 915                                 goto _error;
 916                         }
 917                 }
 918
 919                 if (sscape->type != SSCAPE_VIVO) {
 920                         err = snd_ctl_add(card,
 921                                           snd_ctl_new1(&midi_mixer_ctl, chip));
 922                         if (err < 0) {
 923                                 snd_printk(KERN_ERR "sscape: Could not create "
 924                                                     "MIDI mixer control\n");
 925                                 goto _error;
 926                         }
 927                 }
 928
 929                 sscape->chip = chip;
 930         }
 931
 932 _error:
 933         return err;
 934 }
 935
 936
 937 /*
 938  * Create an ALSA soundcard entry for the SoundScape, using
 939  * the given list of port, IRQ and DMA resources.
 940  */
 941 static int create_sscape(int dev, struct snd_card *card)
 942 {
 943         struct soundscape *sscape = get_card_soundscape(card);
 944         unsigned dma_cfg;
 945         unsigned irq_cfg;
 946         unsigned mpu_irq_cfg;
 947         struct resource *io_res;
 948         struct resource *wss_res;
 949         unsigned long flags;
 950         int err;
 951         int val;
 952         const char *name;
 953
 954         /*
 955          * Grab IO ports that we will need to probe so that we
 956          * can detect and control this hardware ...
 957          */
 958         io_res = request_region(port[dev], 8, "SoundScape");
 959         if (!io_res) {
 960                 snd_printk(KERN_ERR
 961                            "sscape: can't grab port 0x%lx\n", port[dev]);
 962                 return -EBUSY;
 963         }
 964         wss_res = NULL;
 965         if (sscape->type == SSCAPE_VIVO) {
 966                 wss_res = request_region(wss_port[dev], 4, "SoundScape");
 967                 if (!wss_res) {
 968                         snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n",
 969                                             wss_port[dev]);
 970                         err = -EBUSY;
 971                         goto _release_region;
 972                 }
 973         }
 974
 975         /*
 976          * Grab one DMA channel ...
 977          */
 978         err = request_dma(dma[dev], "SoundScape");
 979         if (err < 0) {
 980                 snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
 981                 goto _release_region;
 982         }
 983
 984         spin_lock_init(&sscape->lock);
 985         sscape->io_res = io_res;
 986         sscape->wss_res = wss_res;
 987         sscape->io_base = port[dev];
 988
 989         if (!detect_sscape(sscape, wss_port[dev])) {
 990                 printk(KERN_ERR "sscape: hardware not detected at 0x%x\n",
 991                         sscape->io_base);
 992                 err = -ENODEV;
 993                 goto _release_dma;
 994         }
 995
 996         switch (sscape->type) {
 997         case MEDIA_FX:
 998                 name = "MediaFX/SoundFX";
 999                 break;
1000         case SSCAPE:
1001                 name = "Soundscape";
1002                 break;
1003         case SSCAPE_PNP:
1004                 name = "Soundscape PnP";
1005                 break;
1006         case SSCAPE_VIVO:
1007                 name = "Soundscape VIVO";
1008                 break;
1009         default:
1010                 name = "unknown Soundscape";
1011                 break;
1012         }
1013
1014         printk(KERN_INFO "sscape: %s card detected at 0x%x, using IRQ %d, DMA %d\n",
1015                          name, sscape->io_base, irq[dev], dma[dev]);
1016
1017         /*
1018          * Check that the user didn't pass us garbage data ...
1019          */
1020         irq_cfg = get_irq_config(sscape->type, irq[dev]);
1021         if (irq_cfg == INVALID_IRQ) {
1022                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
1023                 err = -ENXIO;
1024                 goto _release_dma;
1025         }
1026
1027         mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]);
1028         if (mpu_irq_cfg == INVALID_IRQ) {
1029                 snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
1030                 err = -ENXIO;
1031                 goto _release_dma;
1032         }
1033
1034         /*
1035          * Tell the on-board devices where their resources are (I think -
1036          * I can't be sure without a datasheet ... So many magic values!)
1037          */
1038         spin_lock_irqsave(&sscape->lock, flags);
1039
1040         sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e);
1041         sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00);
1042
1043         /*
1044          * Enable and configure the DMA channels ...
1045          */
1046         sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50);
1047         dma_cfg = (sscape->ic_type == IC_OPUS ? 0x40 : 0x70);
1048         sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg);
1049         sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20);
1050
1051         mpu_irq_cfg |= mpu_irq_cfg << 2;
1052         val = sscape_read_unsafe(sscape->io_base, GA_HMCTL_REG) & 0xF7;
1053         if (joystick[dev])
1054                 val |= 8;
1055         sscape_write_unsafe(sscape->io_base, GA_HMCTL_REG, val | 0x10);
1056         sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | mpu_irq_cfg);
1057         sscape_write_unsafe(sscape->io_base,
1058                             GA_CDCFG_REG, 0x09 | DMA_8BIT
1059                             | (dma[dev] << 4) | (irq_cfg << 1));
1060         /*
1061          * Enable the master IRQ ...
1062          */
1063         sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x80);
1064
1065         spin_unlock_irqrestore(&sscape->lock, flags);
1066
1067         /*
1068          * We have now enabled the codec chip, and so we should
1069          * detect the AD1845 device ...
1070          */
1071         err = create_ad1845(card, wss_port[dev], irq[dev],
1072                             dma[dev], dma2[dev]);
1073         if (err < 0) {
1074                 snd_printk(KERN_ERR
1075                                 "sscape: No AD1845 device at 0x%lx, IRQ %d\n",
1076                                 wss_port[dev], irq[dev]);
1077                 goto _release_dma;
1078         }
1079         strcpy(card->driver, "SoundScape");
1080         strcpy(card->shortname, name);
1081         snprintf(card->longname, sizeof(card->longname),
1082                  "%s at 0x%lx, IRQ %d, DMA1 %d, DMA2 %d\n",
1083                  name, sscape->chip->port, sscape->chip->irq,
1084                  sscape->chip->dma1, sscape->chip->dma2);
1085
1086 #define MIDI_DEVNUM  0
1087         if (sscape->type != SSCAPE_VIVO) {
1088                 err = sscape_upload_bootblock(card);
1089                 if (err >= 0)
1090                         err = sscape_upload_microcode(card, err);
1091
1092                 if (err == 0) {
1093                         err = create_mpu401(card, MIDI_DEVNUM, port[dev],
1094                                             mpu_irq[dev]);
1095                         if (err < 0) {
1096                                 snd_printk(KERN_ERR "sscape: Failed to create "
1097                                                 "MPU-401 device at 0x%lx\n",
1098                                                 port[dev]);
1099                                 goto _release_dma;
1100                         }
1101
1102                         /*
1103                          * Initialize mixer
1104                          */
1105                         spin_lock_irqsave(&sscape->lock, flags);
1106                         sscape->midi_vol = 0;
1107                         host_write_ctrl_unsafe(sscape->io_base,
1108                                                 CMD_SET_MIDI_VOL, 100);
1109                         host_write_ctrl_unsafe(sscape->io_base,
1110                                                 sscape->midi_vol, 100);
1111                         host_write_ctrl_unsafe(sscape->io_base,
1112                                                 CMD_XXX_MIDI_VOL, 100);
1113                         host_write_ctrl_unsafe(sscape->io_base,
1114                                                 sscape->midi_vol, 100);
1115                         host_write_ctrl_unsafe(sscape->io_base,
1116                                                 CMD_SET_EXTMIDI, 100);
1117                         host_write_ctrl_unsafe(sscape->io_base,
1118                                                 0, 100);
1119                         host_write_ctrl_unsafe(sscape->io_base, CMD_ACK, 100);
1120
1121                         set_midi_mode_unsafe(sscape->io_base);
1122                         spin_unlock_irqrestore(&sscape->lock, flags);
1123                 }
1124         }
1125
1126         /*
1127          * Now that we have successfully created this sound card,
1128          * it is safe to store the pointer.
1129          * NOTE: we only register the sound card's "destructor"
1130          *       function now that our "constructor" has completed.
1131          */
1132         card->private_free = soundscape_free;
1133
1134         return 0;
1135
1136 _release_dma:
1137         free_dma(dma[dev]);
1138
1139 _release_region:
1140         release_and_free_resource(wss_res);
1141         release_and_free_resource(io_res);
1142
1143         return err;
1144 }
1145
1146
1147 static int snd_sscape_match(struct device *pdev, unsigned int i)
1148 {
1149         /*
1150          * Make sure we were given ALL of the other parameters.
1151          */
1152         if (port[i] == SNDRV_AUTO_PORT)
1153                 return 0;
1154
1155         if (irq[i] == SNDRV_AUTO_IRQ ||
1156             mpu_irq[i] == SNDRV_AUTO_IRQ ||
1157             dma[i] == SNDRV_AUTO_DMA) {
1158                 printk(KERN_INFO
1159                        "sscape: insufficient parameters, "
1160                        "need IO, IRQ, MPU-IRQ and DMA\n");
1161                 return 0;
1162         }
1163
1164         return 1;
1165 }
1166
1167 static int snd_sscape_probe(struct device *pdev, unsigned int dev)
1168 {
1169         struct snd_card *card;
1170         struct soundscape *sscape;
1171         int ret;
1172
1173         ret = snd_card_new(pdev, index[dev], id[dev], THIS_MODULE,
1174                            sizeof(struct soundscape), &card);
1175         if (ret < 0)
1176                 return ret;
1177
1178         sscape = get_card_soundscape(card);
1179         sscape->type = SSCAPE;
1180
1181         dma[dev] &= 0x03;
1182
1183         ret = create_sscape(dev, card);
1184         if (ret < 0)
1185                 goto _release_card;
1186
1187         ret = snd_card_register(card);
1188         if (ret < 0) {
1189                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1190                 goto _release_card;
1191         }
1192         dev_set_drvdata(pdev, card);
1193         return 0;
1194
1195 _release_card:
1196         snd_card_free(card);
1197         return ret;
1198 }
1199
1200 static int snd_sscape_remove(struct device *devptr, unsigned int dev)
1201 {
1202         snd_card_free(dev_get_drvdata(devptr));
1203         return 0;
1204 }
1205
1206 #define DEV_NAME "sscape"
1207
1208 static struct isa_driver snd_sscape_driver = {
1209         .match          = snd_sscape_match,
1210         .probe          = snd_sscape_probe,
1211         .remove         = snd_sscape_remove,
1212         /* FIXME: suspend/resume */
1213         .driver         = {
1214                 .name   = DEV_NAME
1215         },
1216 };
1217
1218 #ifdef CONFIG_PNP
1219 static inline int get_next_autoindex(int i)
1220 {
1221         while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT)
1222                 ++i;
1223         return i;
1224 }
1225
1226
1227 static int sscape_pnp_detect(struct pnp_card_link *pcard,
1228                              const struct pnp_card_device_id *pid)
1229 {
1230         static int idx = 0;
1231         struct pnp_dev *dev;
1232         struct snd_card *card;
1233         struct soundscape *sscape;
1234         int ret;
1235
1236         /*
1237          * Allow this function to fail *quietly* if all the ISA PnP
1238          * devices were configured using module parameters instead.
1239          */
1240         idx = get_next_autoindex(idx);
1241         if (idx >= SNDRV_CARDS)
1242                 return -ENOSPC;
1243
1244         /*
1245          * Check that we still have room for another sound card ...
1246          */
1247         dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
1248         if (!dev)
1249                 return -ENODEV;
1250
1251         if (!pnp_is_active(dev)) {
1252                 if (pnp_activate_dev(dev) < 0) {
1253                         snd_printk(KERN_INFO "sscape: device is inactive\n");
1254                         return -EBUSY;
1255                 }
1256         }
1257
1258         /*
1259          * Create a new ALSA sound card entry, in anticipation
1260          * of detecting our hardware ...
1261          */
1262         ret = snd_card_new(&pcard->card->dev,
1263                            index[idx], id[idx], THIS_MODULE,
1264                            sizeof(struct soundscape), &card);
1265         if (ret < 0)
1266                 return ret;
1267
1268         sscape = get_card_soundscape(card);
1269
1270         /*
1271          * Identify card model ...
1272          */
1273         if (!strncmp("ENS4081", pid->id, 7))
1274                 sscape->type = SSCAPE_VIVO;
1275         else
1276                 sscape->type = SSCAPE_PNP;
1277
1278         /*
1279          * Read the correct parameters off the ISA PnP bus ...
1280          */
1281         port[idx] = pnp_port_start(dev, 0);
1282         irq[idx] = pnp_irq(dev, 0);
1283         mpu_irq[idx] = pnp_irq(dev, 1);
1284         dma[idx] = pnp_dma(dev, 0) & 0x03;
1285         if (sscape->type == SSCAPE_PNP) {
1286                 dma2[idx] = dma[idx];
1287                 wss_port[idx] = CODEC_IO(port[idx]);
1288         } else {
1289                 wss_port[idx] = pnp_port_start(dev, 1);
1290                 dma2[idx] = pnp_dma(dev, 1);
1291         }
1292
1293         ret = create_sscape(idx, card);
1294         if (ret < 0)
1295                 goto _release_card;
1296
1297         ret = snd_card_register(card);
1298         if (ret < 0) {
1299                 snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1300                 goto _release_card;
1301         }
1302
1303         pnp_set_card_drvdata(pcard, card);
1304         ++idx;
1305         return 0;
1306
1307 _release_card:
1308         snd_card_free(card);
1309         return ret;
1310 }
1311
1312 static void sscape_pnp_remove(struct pnp_card_link *pcard)
1313 {
1314         snd_card_free(pnp_get_card_drvdata(pcard));
1315         pnp_set_card_drvdata(pcard, NULL);
1316 }
1317
1318 static struct pnp_card_driver sscape_pnpc_driver = {
1319         .flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
1320         .name = "sscape",
1321         .id_table = sscape_pnpids,
1322         .probe = sscape_pnp_detect,
1323         .remove = sscape_pnp_remove,
1324 };
1325
1326 #endif /* CONFIG_PNP */
1327
1328 static int __init sscape_init(void)
1329 {
1330         int err;
1331
1332         err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS);
1333 #ifdef CONFIG_PNP
1334         if (!err)
1335                 isa_registered = 1;
1336
1337         err = pnp_register_card_driver(&sscape_pnpc_driver);
1338         if (!err)
1339                 pnp_registered = 1;
1340
1341         if (isa_registered)
1342                 err = 0;
1343 #endif
1344         return err;
1345 }
1346
1347 static void __exit sscape_exit(void)
1348 {
1349 #ifdef CONFIG_PNP
1350         if (pnp_registered)
1351                 pnp_unregister_card_driver(&sscape_pnpc_driver);
1352         if (isa_registered)
1353 #endif
1354                 isa_unregister_driver(&snd_sscape_driver);
1355 }
1356
1357 module_init(sscape_init);
1358 module_exit(sscape_exit);