linux/sound/isa/sscape.c
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   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/isa.h>
  27#include <linux/delay.h>
  28#include <linux/firmware.h>
  29#include <linux/pnp.h>
  30#include <linux/spinlock.h>
  31#include <linux/module.h>
  32#include <asm/dma.h>
  33#include <sound/core.h>
  34#include <sound/wss.h>
  35#include <sound/mpu401.h>
  36#include <sound/initval.h>
  37
  38
  39MODULE_AUTHOR("Chris Rankin");
  40MODULE_DESCRIPTION("ENSONIQ SoundScape driver");
  41MODULE_LICENSE("GPL");
  42MODULE_FIRMWARE("sndscape.co0");
  43MODULE_FIRMWARE("sndscape.co1");
  44MODULE_FIRMWARE("sndscape.co2");
  45MODULE_FIRMWARE("sndscape.co3");
  46MODULE_FIRMWARE("sndscape.co4");
  47MODULE_FIRMWARE("scope.cod");
  48
  49static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  50static char* id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  51static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  52static long wss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  53static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  54static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;
  55static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  56static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;
  57static bool joystick[SNDRV_CARDS];
  58
  59module_param_array(index, int, NULL, 0444);
  60MODULE_PARM_DESC(index, "Index number for SoundScape soundcard");
  61
  62module_param_array(id, charp, NULL, 0444);
  63MODULE_PARM_DESC(id, "Description for SoundScape card");
  64
  65module_param_array(port, long, NULL, 0444);
  66MODULE_PARM_DESC(port, "Port # for SoundScape driver.");
  67
  68module_param_array(wss_port, long, NULL, 0444);
  69MODULE_PARM_DESC(wss_port, "WSS Port # for SoundScape driver.");
  70
  71module_param_array(irq, int, NULL, 0444);
  72MODULE_PARM_DESC(irq, "IRQ # for SoundScape driver.");
  73
  74module_param_array(mpu_irq, int, NULL, 0444);
  75MODULE_PARM_DESC(mpu_irq, "MPU401 IRQ # for SoundScape driver.");
  76
  77module_param_array(dma, int, NULL, 0444);
  78MODULE_PARM_DESC(dma, "DMA # for SoundScape driver.");
  79
  80module_param_array(dma2, int, NULL, 0444);
  81MODULE_PARM_DESC(dma2, "DMA2 # for SoundScape driver.");
  82
  83module_param_array(joystick, bool, NULL, 0444);
  84MODULE_PARM_DESC(joystick, "Enable gameport.");
  85
  86#ifdef CONFIG_PNP
  87static int isa_registered;
  88static int pnp_registered;
  89
  90static struct pnp_card_device_id sscape_pnpids[] = {
  91        { .id = "ENS3081", .devs = { { "ENS0000" } } }, /* Soundscape PnP */
  92        { .id = "ENS4081", .devs = { { "ENS1011" } } }, /* VIVO90 */
  93        { .id = "" }    /* end */
  94};
  95
  96MODULE_DEVICE_TABLE(pnp_card, sscape_pnpids);
  97#endif
  98
  99
 100#define HOST_CTRL_IO(i)  ((i) + 2)
 101#define HOST_DATA_IO(i)  ((i) + 3)
 102#define ODIE_ADDR_IO(i)  ((i) + 4)
 103#define ODIE_DATA_IO(i)  ((i) + 5)
 104#define CODEC_IO(i)      ((i) + 8)
 105
 106#define IC_ODIE  1
 107#define IC_OPUS  2
 108
 109#define RX_READY 0x01
 110#define TX_READY 0x02
 111
 112#define CMD_ACK                 0x80
 113#define CMD_SET_MIDI_VOL        0x84
 114#define CMD_GET_MIDI_VOL        0x85
 115#define CMD_XXX_MIDI_VOL        0x86
 116#define CMD_SET_EXTMIDI         0x8a
 117#define CMD_GET_EXTMIDI         0x8b
 118#define CMD_SET_MT32            0x8c
 119#define CMD_GET_MT32            0x8d
 120
 121enum GA_REG {
 122        GA_INTSTAT_REG = 0,
 123        GA_INTENA_REG,
 124        GA_DMAA_REG,
 125        GA_DMAB_REG,
 126        GA_INTCFG_REG,
 127        GA_DMACFG_REG,
 128        GA_CDCFG_REG,
 129        GA_SMCFGA_REG,
 130        GA_SMCFGB_REG,
 131        GA_HMCTL_REG
 132};
 133
 134#define DMA_8BIT  0x80
 135
 136
 137enum card_type {
 138        MEDIA_FX,       /* Sequoia S-1000 */
 139        SSCAPE,         /* Sequoia S-2000 */
 140        SSCAPE_PNP,
 141        SSCAPE_VIVO,
 142};
 143
 144struct soundscape {
 145        spinlock_t lock;
 146        unsigned io_base;
 147        int ic_type;
 148        enum card_type type;
 149        struct resource *io_res;
 150        struct resource *wss_res;
 151        struct snd_wss *chip;
 152
 153        unsigned char midi_vol;
 154};
 155
 156#define INVALID_IRQ  ((unsigned)-1)
 157
 158
 159static inline struct soundscape *get_card_soundscape(struct snd_card *c)
 160{
 161        return (struct soundscape *) (c->private_data);
 162}
 163
 164/*
 165 * Allocates some kernel memory that we can use for DMA.
 166 * I think this means that the memory has to map to
 167 * contiguous pages of physical memory.
 168 */
 169static struct snd_dma_buffer *get_dmabuf(struct snd_dma_buffer *buf,
 170                                         unsigned long size)
 171{
 172        if (buf) {
 173                if (snd_dma_alloc_pages_fallback(SNDRV_DMA_TYPE_DEV,
 174                                                 snd_dma_isa_data(),
 175                                                 size, buf) < 0) {
 176                        snd_printk(KERN_ERR "sscape: Failed to allocate "
 177                                            "%lu bytes for DMA\n",
 178                                            size);
 179                        return NULL;
 180                }
 181        }
 182
 183        return buf;
 184}
 185
 186/*
 187 * Release the DMA-able kernel memory ...
 188 */
 189static void free_dmabuf(struct snd_dma_buffer *buf)
 190{
 191        if (buf && buf->area)
 192                snd_dma_free_pages(buf);
 193}
 194
 195/*
 196 * This function writes to the SoundScape's control registers,
 197 * but doesn't do any locking. It's up to the caller to do that.
 198 * This is why this function is "unsafe" ...
 199 */
 200static inline void sscape_write_unsafe(unsigned io_base, enum GA_REG reg,
 201                                       unsigned char val)
 202{
 203        outb(reg, ODIE_ADDR_IO(io_base));
 204        outb(val, ODIE_DATA_IO(io_base));
 205}
 206
 207/*
 208 * Write to the SoundScape's control registers, and do the
 209 * necessary locking ...
 210 */
 211static void sscape_write(struct soundscape *s, enum GA_REG reg,
 212                         unsigned char val)
 213{
 214        unsigned long flags;
 215
 216        spin_lock_irqsave(&s->lock, flags);
 217        sscape_write_unsafe(s->io_base, reg, val);
 218        spin_unlock_irqrestore(&s->lock, flags);
 219}
 220
 221/*
 222 * Read from the SoundScape's control registers, but leave any
 223 * locking to the caller. This is why the function is "unsafe" ...
 224 */
 225static inline unsigned char sscape_read_unsafe(unsigned io_base,
 226                                               enum GA_REG reg)
 227{
 228        outb(reg, ODIE_ADDR_IO(io_base));
 229        return inb(ODIE_DATA_IO(io_base));
 230}
 231
 232/*
 233 * Puts the SoundScape into "host" mode, as compared to "MIDI" mode
 234 */
 235static inline void set_host_mode_unsafe(unsigned io_base)
 236{
 237        outb(0x0, HOST_CTRL_IO(io_base));
 238}
 239
 240/*
 241 * Puts the SoundScape into "MIDI" mode, as compared to "host" mode
 242 */
 243static inline void set_midi_mode_unsafe(unsigned io_base)
 244{
 245        outb(0x3, HOST_CTRL_IO(io_base));
 246}
 247
 248/*
 249 * Read the SoundScape's host-mode control register, but leave
 250 * any locking issues to the caller ...
 251 */
 252static inline int host_read_unsafe(unsigned io_base)
 253{
 254        int data = -1;
 255        if ((inb(HOST_CTRL_IO(io_base)) & RX_READY) != 0)
 256                data = inb(HOST_DATA_IO(io_base));
 257
 258        return data;
 259}
 260
 261/*
 262 * Read the SoundScape's host-mode control register, performing
 263 * a limited amount of busy-waiting if the register isn't ready.
 264 * Also leaves all locking-issues to the caller ...
 265 */
 266static int host_read_ctrl_unsafe(unsigned io_base, unsigned timeout)
 267{
 268        int data;
 269
 270        while (((data = host_read_unsafe(io_base)) < 0) && (timeout != 0)) {
 271                udelay(100);
 272                --timeout;
 273        } /* while */
 274
 275        return data;
 276}
 277
 278/*
 279 * Write to the SoundScape's host-mode control registers, but
 280 * leave any locking issues to the caller ...
 281 */
 282static inline int host_write_unsafe(unsigned io_base, unsigned char data)
 283{
 284        if ((inb(HOST_CTRL_IO(io_base)) & TX_READY) != 0) {
 285                outb(data, HOST_DATA_IO(io_base));
 286                return 1;
 287        }
 288
 289        return 0;
 290}
 291
 292/*
 293 * Write to the SoundScape's host-mode control registers, performing
 294 * a limited amount of busy-waiting if the register isn't ready.
 295 * Also leaves all locking-issues to the caller ...
 296 */
 297static int host_write_ctrl_unsafe(unsigned io_base, unsigned char data,
 298                                  unsigned timeout)
 299{
 300        int err;
 301
 302        while (!(err = host_write_unsafe(io_base, data)) && (timeout != 0)) {
 303                udelay(100);
 304                --timeout;
 305        } /* while */
 306
 307        return err;
 308}
 309
 310
 311/*
 312 * Check that the MIDI subsystem is operational. If it isn't,
 313 * then we will hang the computer if we try to use it ...
 314 *
 315 * NOTE: This check is based upon observation, not documentation.
 316 */
 317static inline int verify_mpu401(const struct snd_mpu401 *mpu)
 318{
 319        return ((inb(MPU401C(mpu)) & 0xc0) == 0x80);
 320}
 321
 322/*
 323 * This is apparently the standard way to initailise an MPU-401
 324 */
 325static inline void initialise_mpu401(const struct snd_mpu401 *mpu)
 326{
 327        outb(0, MPU401D(mpu));
 328}
 329
 330/*
 331 * Tell the SoundScape to activate the AD1845 chip (I think).
 332 * The AD1845 detection fails if we *don't* do this, so I
 333 * think that this is a good idea ...
 334 */
 335static void activate_ad1845_unsafe(unsigned io_base)
 336{
 337        unsigned char val = sscape_read_unsafe(io_base, GA_HMCTL_REG);
 338        sscape_write_unsafe(io_base, GA_HMCTL_REG, (val & 0xcf) | 0x10);
 339        sscape_write_unsafe(io_base, GA_CDCFG_REG, 0x80);
 340}
 341
 342/*
 343 * Do the necessary ALSA-level cleanup to deallocate our driver ...
 344 */
 345static void soundscape_free(struct snd_card *c)
 346{
 347        struct soundscape *sscape = get_card_soundscape(c);
 348        release_and_free_resource(sscape->io_res);
 349        release_and_free_resource(sscape->wss_res);
 350        free_dma(sscape->chip->dma1);
 351}
 352
 353/*
 354 * Tell the SoundScape to begin a DMA tranfer using the given channel.
 355 * All locking issues are left to the caller.
 356 */
 357static void sscape_start_dma_unsafe(unsigned io_base, enum GA_REG reg)
 358{
 359        sscape_write_unsafe(io_base, reg,
 360                            sscape_read_unsafe(io_base, reg) | 0x01);
 361        sscape_write_unsafe(io_base, reg,
 362                            sscape_read_unsafe(io_base, reg) & 0xfe);
 363}
 364
 365/*
 366 * Wait for a DMA transfer to complete. This is a "limited busy-wait",
 367 * and all locking issues are left to the caller.
 368 */
 369static int sscape_wait_dma_unsafe(unsigned io_base, enum GA_REG reg,
 370                                  unsigned timeout)
 371{
 372        while (!(sscape_read_unsafe(io_base, reg) & 0x01) && (timeout != 0)) {
 373                udelay(100);
 374                --timeout;
 375        } /* while */
 376
 377        return sscape_read_unsafe(io_base, reg) & 0x01;
 378}
 379
 380/*
 381 * Wait for the On-Board Processor to return its start-up
 382 * acknowledgement sequence. This wait is too long for
 383 * us to perform "busy-waiting", and so we must sleep.
 384 * This in turn means that we must not be holding any
 385 * spinlocks when we call this function.
 386 */
 387static int obp_startup_ack(struct soundscape *s, unsigned timeout)
 388{
 389        unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 390
 391        do {
 392                unsigned long flags;
 393                int x;
 394
 395                spin_lock_irqsave(&s->lock, flags);
 396                x = host_read_unsafe(s->io_base);
 397                spin_unlock_irqrestore(&s->lock, flags);
 398                if (x == 0xfe || x == 0xff)
 399                        return 1;
 400
 401                msleep(10);
 402        } while (time_before(jiffies, end_time));
 403
 404        return 0;
 405}
 406
 407/*
 408 * Wait for the host to return its start-up acknowledgement
 409 * sequence. This wait is too long for us to perform
 410 * "busy-waiting", and so we must sleep. This in turn means
 411 * that we must not be holding any spinlocks when we call
 412 * this function.
 413 */
 414static int host_startup_ack(struct soundscape *s, unsigned timeout)
 415{
 416        unsigned long end_time = jiffies + msecs_to_jiffies(timeout);
 417
 418        do {
 419                unsigned long flags;
 420                int x;
 421
 422                spin_lock_irqsave(&s->lock, flags);
 423                x = host_read_unsafe(s->io_base);
 424                spin_unlock_irqrestore(&s->lock, flags);
 425                if (x == 0xfe)
 426                        return 1;
 427
 428                msleep(10);
 429        } while (time_before(jiffies, end_time));
 430
 431        return 0;
 432}
 433
 434/*
 435 * Upload a byte-stream into the SoundScape using DMA channel A.
 436 */
 437static int upload_dma_data(struct soundscape *s, const unsigned char *data,
 438                           size_t size)
 439{
 440        unsigned long flags;
 441        struct snd_dma_buffer dma;
 442        int ret;
 443        unsigned char val;
 444
 445        if (!get_dmabuf(&dma, PAGE_ALIGN(32 * 1024)))
 446                return -ENOMEM;
 447
 448        spin_lock_irqsave(&s->lock, flags);
 449
 450        /*
 451         * Reset the board ...
 452         */
 453        val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 454        sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val & 0x3f);
 455
 456        /*
 457         * Enable the DMA channels and configure them ...
 458         */
 459        val = (s->chip->dma1 << 4) | DMA_8BIT;
 460        sscape_write_unsafe(s->io_base, GA_DMAA_REG, val);
 461        sscape_write_unsafe(s->io_base, GA_DMAB_REG, 0x20);
 462
 463        /*
 464         * Take the board out of reset ...
 465         */
 466        val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 467        sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x80);
 468
 469        /*
 470         * Upload the firmware to the SoundScape
 471         * board through the DMA channel ...
 472         */
 473        while (size != 0) {
 474                unsigned long len;
 475
 476                len = min(size, dma.bytes);
 477                memcpy(dma.area, data, len);
 478                data += len;
 479                size -= len;
 480
 481                snd_dma_program(s->chip->dma1, dma.addr, len, DMA_MODE_WRITE);
 482                sscape_start_dma_unsafe(s->io_base, GA_DMAA_REG);
 483                if (!sscape_wait_dma_unsafe(s->io_base, GA_DMAA_REG, 5000)) {
 484                        /*
 485                         * Don't forget to release this spinlock we're holding
 486                         */
 487                        spin_unlock_irqrestore(&s->lock, flags);
 488
 489                        snd_printk(KERN_ERR
 490                                        "sscape: DMA upload has timed out\n");
 491                        ret = -EAGAIN;
 492                        goto _release_dma;
 493                }
 494        } /* while */
 495
 496        set_host_mode_unsafe(s->io_base);
 497        outb(0x0, s->io_base);
 498
 499        /*
 500         * Boot the board ... (I think)
 501         */
 502        val = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 503        sscape_write_unsafe(s->io_base, GA_HMCTL_REG, val | 0x40);
 504        spin_unlock_irqrestore(&s->lock, flags);
 505
 506        /*
 507         * If all has gone well, then the board should acknowledge
 508         * the new upload and tell us that it has rebooted OK. We
 509         * give it 5 seconds (max) ...
 510         */
 511        ret = 0;
 512        if (!obp_startup_ack(s, 5000)) {
 513                snd_printk(KERN_ERR "sscape: No response "
 514                                    "from on-board processor after upload\n");
 515                ret = -EAGAIN;
 516        } else if (!host_startup_ack(s, 5000)) {
 517                snd_printk(KERN_ERR
 518                                "sscape: SoundScape failed to initialise\n");
 519                ret = -EAGAIN;
 520        }
 521
 522_release_dma:
 523        /*
 524         * NOTE!!! We are NOT holding any spinlocks at this point !!!
 525         */
 526        sscape_write(s, GA_DMAA_REG, (s->ic_type == IC_OPUS ? 0x40 : 0x70));
 527        free_dmabuf(&dma);
 528
 529        return ret;
 530}
 531
 532/*
 533 * Upload the bootblock(?) into the SoundScape. The only
 534 * purpose of this block of code seems to be to tell
 535 * us which version of the microcode we should be using.
 536 */
 537static int sscape_upload_bootblock(struct snd_card *card)
 538{
 539        struct soundscape *sscape = get_card_soundscape(card);
 540        unsigned long flags;
 541        const struct firmware *init_fw = NULL;
 542        int data = 0;
 543        int ret;
 544
 545        ret = request_firmware(&init_fw, "scope.cod", card->dev);
 546        if (ret < 0) {
 547                snd_printk(KERN_ERR "sscape: Error loading scope.cod");
 548                return ret;
 549        }
 550        ret = upload_dma_data(sscape, init_fw->data, init_fw->size);
 551
 552        release_firmware(init_fw);
 553
 554        spin_lock_irqsave(&sscape->lock, flags);
 555        if (ret == 0)
 556                data = host_read_ctrl_unsafe(sscape->io_base, 100);
 557
 558        if (data & 0x10)
 559                sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2f);
 560
 561        spin_unlock_irqrestore(&sscape->lock, flags);
 562
 563        data &= 0xf;
 564        if (ret == 0 && data > 7) {
 565                snd_printk(KERN_ERR
 566                                "sscape: timeout reading firmware version\n");
 567                ret = -EAGAIN;
 568        }
 569
 570        return (ret == 0) ? data : ret;
 571}
 572
 573/*
 574 * Upload the microcode into the SoundScape.
 575 */
 576static int sscape_upload_microcode(struct snd_card *card, int version)
 577{
 578        struct soundscape *sscape = get_card_soundscape(card);
 579        const struct firmware *init_fw = NULL;
 580        char name[14];
 581        int err;
 582
 583        snprintf(name, sizeof(name), "sndscape.co%d", version);
 584
 585        err = request_firmware(&init_fw, name, card->dev);
 586        if (err < 0) {
 587                snd_printk(KERN_ERR "sscape: Error loading sndscape.co%d",
 588                                version);
 589                return err;
 590        }
 591        err = upload_dma_data(sscape, init_fw->data, init_fw->size);
 592        if (err == 0)
 593                snd_printk(KERN_INFO "sscape: MIDI firmware loaded %d KBs\n",
 594                                init_fw->size >> 10);
 595
 596        release_firmware(init_fw);
 597
 598        return err;
 599}
 600
 601/*
 602 * Mixer control for the SoundScape's MIDI device.
 603 */
 604static int sscape_midi_info(struct snd_kcontrol *ctl,
 605                            struct snd_ctl_elem_info *uinfo)
 606{
 607        uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
 608        uinfo->count = 1;
 609        uinfo->value.integer.min = 0;
 610        uinfo->value.integer.max = 127;
 611        return 0;
 612}
 613
 614static int sscape_midi_get(struct snd_kcontrol *kctl,
 615                           struct snd_ctl_elem_value *uctl)
 616{
 617        struct snd_wss *chip = snd_kcontrol_chip(kctl);
 618        struct snd_card *card = chip->card;
 619        register struct soundscape *s = get_card_soundscape(card);
 620        unsigned long flags;
 621
 622        spin_lock_irqsave(&s->lock, flags);
 623        uctl->value.integer.value[0] = s->midi_vol;
 624        spin_unlock_irqrestore(&s->lock, flags);
 625        return 0;
 626}
 627
 628static int sscape_midi_put(struct snd_kcontrol *kctl,
 629                           struct snd_ctl_elem_value *uctl)
 630{
 631        struct snd_wss *chip = snd_kcontrol_chip(kctl);
 632        struct snd_card *card = chip->card;
 633        struct soundscape *s = get_card_soundscape(card);
 634        unsigned long flags;
 635        int change;
 636        unsigned char new_val;
 637
 638        spin_lock_irqsave(&s->lock, flags);
 639
 640        new_val = uctl->value.integer.value[0] & 127;
 641        /*
 642         * We need to put the board into HOST mode before we
 643         * can send any volume-changing HOST commands ...
 644         */
 645        set_host_mode_unsafe(s->io_base);
 646
 647        /*
 648         * To successfully change the MIDI volume setting, you seem to
 649         * have to write a volume command, write the new volume value,
 650         * and then perform another volume-related command. Perhaps the
 651         * first command is an "open" and the second command is a "close"?
 652         */
 653        if (s->midi_vol == new_val) {
 654                change = 0;
 655                goto __skip_change;
 656        }
 657        change = host_write_ctrl_unsafe(s->io_base, CMD_SET_MIDI_VOL, 100)
 658                 && host_write_ctrl_unsafe(s->io_base, new_val, 100)
 659                 && host_write_ctrl_unsafe(s->io_base, CMD_XXX_MIDI_VOL, 100)
 660                 && host_write_ctrl_unsafe(s->io_base, new_val, 100);
 661        s->midi_vol = new_val;
 662__skip_change:
 663
 664        /*
 665         * Take the board out of HOST mode and back into MIDI mode ...
 666         */
 667        set_midi_mode_unsafe(s->io_base);
 668
 669        spin_unlock_irqrestore(&s->lock, flags);
 670        return change;
 671}
 672
 673static struct snd_kcontrol_new midi_mixer_ctl = {
 674        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 675        .name = "MIDI",
 676        .info = sscape_midi_info,
 677        .get = sscape_midi_get,
 678        .put = sscape_midi_put
 679};
 680
 681/*
 682 * The SoundScape can use two IRQs from a possible set of four.
 683 * These IRQs are encoded as bit patterns so that they can be
 684 * written to the control registers.
 685 */
 686static unsigned __devinit get_irq_config(int sscape_type, int irq)
 687{
 688        static const int valid_irq[] = { 9, 5, 7, 10 };
 689        static const int old_irq[] = { 9, 7, 5, 15 };
 690        unsigned cfg;
 691
 692        if (sscape_type == MEDIA_FX) {
 693                for (cfg = 0; cfg < ARRAY_SIZE(old_irq); ++cfg)
 694                        if (irq == old_irq[cfg])
 695                                return cfg;
 696        } else {
 697                for (cfg = 0; cfg < ARRAY_SIZE(valid_irq); ++cfg)
 698                        if (irq == valid_irq[cfg])
 699                                return cfg;
 700        }
 701
 702        return INVALID_IRQ;
 703}
 704
 705/*
 706 * Perform certain arcane port-checks to see whether there
 707 * is a SoundScape board lurking behind the given ports.
 708 */
 709static int __devinit detect_sscape(struct soundscape *s, long wss_io)
 710{
 711        unsigned long flags;
 712        unsigned d;
 713        int retval = 0;
 714
 715        spin_lock_irqsave(&s->lock, flags);
 716
 717        /*
 718         * The following code is lifted from the original OSS driver,
 719         * and as I don't have a datasheet I cannot really comment
 720         * on what it is doing...
 721         */
 722        if ((inb(HOST_CTRL_IO(s->io_base)) & 0x78) != 0)
 723                goto _done;
 724
 725        d = inb(ODIE_ADDR_IO(s->io_base)) & 0xf0;
 726        if ((d & 0x80) != 0)
 727                goto _done;
 728
 729        if (d == 0)
 730                s->ic_type = IC_ODIE;
 731        else if ((d & 0x60) != 0)
 732                s->ic_type = IC_OPUS;
 733        else
 734                goto _done;
 735
 736        outb(0xfa, ODIE_ADDR_IO(s->io_base));
 737        if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0a)
 738                goto _done;
 739
 740        outb(0xfe, ODIE_ADDR_IO(s->io_base));
 741        if ((inb(ODIE_ADDR_IO(s->io_base)) & 0x9f) != 0x0e)
 742                goto _done;
 743
 744        outb(0xfe, ODIE_ADDR_IO(s->io_base));
 745        d = inb(ODIE_DATA_IO(s->io_base));
 746        if (s->type != SSCAPE_VIVO && (d & 0x9f) != 0x0e)
 747                goto _done;
 748
 749        if (s->ic_type == IC_OPUS)
 750                activate_ad1845_unsafe(s->io_base);
 751
 752        if (s->type == SSCAPE_VIVO)
 753                wss_io += 4;
 754
 755        d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 756        sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 757
 758        /* wait for WSS codec */
 759        for (d = 0; d < 500; d++) {
 760                if ((inb(wss_io) & 0x80) == 0)
 761                        break;
 762                spin_unlock_irqrestore(&s->lock, flags);
 763                msleep(1);
 764                spin_lock_irqsave(&s->lock, flags);
 765        }
 766
 767        if ((inb(wss_io) & 0x80) != 0)
 768                goto _done;
 769
 770        if (inb(wss_io + 2) == 0xff)
 771                goto _done;
 772
 773        d  = sscape_read_unsafe(s->io_base, GA_HMCTL_REG) & 0x3f;
 774        sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d);
 775
 776        if ((inb(wss_io) & 0x80) != 0)
 777                s->type = MEDIA_FX;
 778
 779        d = sscape_read_unsafe(s->io_base, GA_HMCTL_REG);
 780        sscape_write_unsafe(s->io_base, GA_HMCTL_REG, d | 0xc0);
 781        /* wait for WSS codec */
 782        for (d = 0; d < 500; d++) {
 783                if ((inb(wss_io) & 0x80) == 0)
 784                        break;
 785                spin_unlock_irqrestore(&s->lock, flags);
 786                msleep(1);
 787                spin_lock_irqsave(&s->lock, flags);
 788        }
 789
 790        /*
 791         * SoundScape successfully detected!
 792         */
 793        retval = 1;
 794
 795_done:
 796        spin_unlock_irqrestore(&s->lock, flags);
 797        return retval;
 798}
 799
 800/*
 801 * ALSA callback function, called when attempting to open the MIDI device.
 802 * Check that the MIDI firmware has been loaded, because we don't want
 803 * to crash the machine. Also check that someone isn't using the hardware
 804 * IOCTL device.
 805 */
 806static int mpu401_open(struct snd_mpu401 *mpu)
 807{
 808        if (!verify_mpu401(mpu)) {
 809                snd_printk(KERN_ERR "sscape: MIDI disabled, "
 810                                    "please load firmware\n");
 811                return -ENODEV;
 812        }
 813
 814        return 0;
 815}
 816
 817/*
 818 * Initialse an MPU-401 subdevice for MIDI support on the SoundScape.
 819 */
 820static int __devinit create_mpu401(struct snd_card *card, int devnum,
 821                                   unsigned long port, int irq)
 822{
 823        struct soundscape *sscape = get_card_soundscape(card);
 824        struct snd_rawmidi *rawmidi;
 825        int err;
 826
 827        err = snd_mpu401_uart_new(card, devnum, MPU401_HW_MPU401, port,
 828                                  MPU401_INFO_INTEGRATED, irq, &rawmidi);
 829        if (err == 0) {
 830                struct snd_mpu401 *mpu = rawmidi->private_data;
 831                mpu->open_input = mpu401_open;
 832                mpu->open_output = mpu401_open;
 833                mpu->private_data = sscape;
 834
 835                initialise_mpu401(mpu);
 836        }
 837
 838        return err;
 839}
 840
 841
 842/*
 843 * Create an AD1845 PCM subdevice on the SoundScape. The AD1845
 844 * is very much like a CS4231, with a few extra bits. We will
 845 * try to support at least some of the extra bits by overriding
 846 * some of the CS4231 callback.
 847 */
 848static int __devinit create_ad1845(struct snd_card *card, unsigned port,
 849                                   int irq, int dma1, int dma2)
 850{
 851        register struct soundscape *sscape = get_card_soundscape(card);
 852        struct snd_wss *chip;
 853        int err;
 854        int codec_type = WSS_HW_DETECT;
 855
 856        switch (sscape->type) {
 857        case MEDIA_FX:
 858        case SSCAPE:
 859                /*
 860                 * There are some freak examples of early Soundscape cards
 861                 * with CS4231 instead of AD1848/CS4248. Unfortunately, the
 862                 * CS4231 works only in CS4248 compatibility mode on
 863                 * these cards so force it.
 864                 */
 865                if (sscape->ic_type != IC_OPUS)
 866                        codec_type = WSS_HW_AD1848;
 867                break;
 868
 869        case SSCAPE_VIVO:
 870                port += 4;
 871                break;
 872        default:
 873                break;
 874        }
 875
 876        err = snd_wss_create(card, port, -1, irq, dma1, dma2,
 877                             codec_type, WSS_HWSHARE_DMA1, &chip);
 878        if (!err) {
 879                unsigned long flags;
 880                struct snd_pcm *pcm;
 881
 882                if (sscape->type != SSCAPE_VIVO) {
 883                        /*
 884                         * The input clock frequency on the SoundScape must
 885                         * be 14.31818 MHz, because we must set this register
 886                         * to get the playback to sound correct ...
 887                         */
 888                        snd_wss_mce_up(chip);
 889                        spin_lock_irqsave(&chip->reg_lock, flags);
 890                        snd_wss_out(chip, AD1845_CLOCK, 0x20);
 891                        spin_unlock_irqrestore(&chip->reg_lock, flags);
 892                        snd_wss_mce_down(chip);
 893
 894                }
 895
 896                err = snd_wss_pcm(chip, 0, &pcm);
 897                if (err < 0) {
 898                        snd_printk(KERN_ERR "sscape: No PCM device "
 899                                            "for AD1845 chip\n");
 900                        goto _error;
 901                }
 902
 903                err = snd_wss_mixer(chip);
 904                if (err < 0) {
 905                        snd_printk(KERN_ERR "sscape: No mixer device "
 906                                            "for AD1845 chip\n");
 907                        goto _error;
 908                }
 909                if (chip->hardware != WSS_HW_AD1848) {
 910                        err = snd_wss_timer(chip, 0, NULL);
 911                        if (err < 0) {
 912                                snd_printk(KERN_ERR "sscape: No timer device "
 913                                                    "for AD1845 chip\n");
 914                                goto _error;
 915                        }
 916                }
 917
 918                if (sscape->type != SSCAPE_VIVO) {
 919                        err = snd_ctl_add(card,
 920                                          snd_ctl_new1(&midi_mixer_ctl, chip));
 921                        if (err < 0) {
 922                                snd_printk(KERN_ERR "sscape: Could not create "
 923                                                    "MIDI mixer control\n");
 924                                goto _error;
 925                        }
 926                }
 927
 928                sscape->chip = chip;
 929        }
 930
 931_error:
 932        return err;
 933}
 934
 935
 936/*
 937 * Create an ALSA soundcard entry for the SoundScape, using
 938 * the given list of port, IRQ and DMA resources.
 939 */
 940static int __devinit create_sscape(int dev, struct snd_card *card)
 941{
 942        struct soundscape *sscape = get_card_soundscape(card);
 943        unsigned dma_cfg;
 944        unsigned irq_cfg;
 945        unsigned mpu_irq_cfg;
 946        struct resource *io_res;
 947        struct resource *wss_res;
 948        unsigned long flags;
 949        int err;
 950        int val;
 951        const char *name;
 952
 953        /*
 954         * Grab IO ports that we will need to probe so that we
 955         * can detect and control this hardware ...
 956         */
 957        io_res = request_region(port[dev], 8, "SoundScape");
 958        if (!io_res) {
 959                snd_printk(KERN_ERR
 960                           "sscape: can't grab port 0x%lx\n", port[dev]);
 961                return -EBUSY;
 962        }
 963        wss_res = NULL;
 964        if (sscape->type == SSCAPE_VIVO) {
 965                wss_res = request_region(wss_port[dev], 4, "SoundScape");
 966                if (!wss_res) {
 967                        snd_printk(KERN_ERR "sscape: can't grab port 0x%lx\n",
 968                                            wss_port[dev]);
 969                        err = -EBUSY;
 970                        goto _release_region;
 971                }
 972        }
 973
 974        /*
 975         * Grab one DMA channel ...
 976         */
 977        err = request_dma(dma[dev], "SoundScape");
 978        if (err < 0) {
 979                snd_printk(KERN_ERR "sscape: can't grab DMA %d\n", dma[dev]);
 980                goto _release_region;
 981        }
 982
 983        spin_lock_init(&sscape->lock);
 984        sscape->io_res = io_res;
 985        sscape->wss_res = wss_res;
 986        sscape->io_base = port[dev];
 987
 988        if (!detect_sscape(sscape, wss_port[dev])) {
 989                printk(KERN_ERR "sscape: hardware not detected at 0x%x\n",
 990                        sscape->io_base);
 991                err = -ENODEV;
 992                goto _release_dma;
 993        }
 994
 995        switch (sscape->type) {
 996        case MEDIA_FX:
 997                name = "MediaFX/SoundFX";
 998                break;
 999        case SSCAPE:
1000                name = "Soundscape";
1001                break;
1002        case SSCAPE_PNP:
1003                name = "Soundscape PnP";
1004                break;
1005        case SSCAPE_VIVO:
1006                name = "Soundscape VIVO";
1007                break;
1008        default:
1009                name = "unknown Soundscape";
1010                break;
1011        }
1012
1013        printk(KERN_INFO "sscape: %s card detected at 0x%x, using IRQ %d, DMA %d\n",
1014                         name, sscape->io_base, irq[dev], dma[dev]);
1015
1016        /*
1017         * Check that the user didn't pass us garbage data ...
1018         */
1019        irq_cfg = get_irq_config(sscape->type, irq[dev]);
1020        if (irq_cfg == INVALID_IRQ) {
1021                snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", irq[dev]);
1022                err = -ENXIO;
1023                goto _release_dma;
1024        }
1025
1026        mpu_irq_cfg = get_irq_config(sscape->type, mpu_irq[dev]);
1027        if (mpu_irq_cfg == INVALID_IRQ) {
1028                snd_printk(KERN_ERR "sscape: Invalid IRQ %d\n", mpu_irq[dev]);
1029                err = -ENXIO;
1030                goto _release_dma;
1031        }
1032
1033        /*
1034         * Tell the on-board devices where their resources are (I think -
1035         * I can't be sure without a datasheet ... So many magic values!)
1036         */
1037        spin_lock_irqsave(&sscape->lock, flags);
1038
1039        sscape_write_unsafe(sscape->io_base, GA_SMCFGA_REG, 0x2e);
1040        sscape_write_unsafe(sscape->io_base, GA_SMCFGB_REG, 0x00);
1041
1042        /*
1043         * Enable and configure the DMA channels ...
1044         */
1045        sscape_write_unsafe(sscape->io_base, GA_DMACFG_REG, 0x50);
1046        dma_cfg = (sscape->ic_type == IC_OPUS ? 0x40 : 0x70);
1047        sscape_write_unsafe(sscape->io_base, GA_DMAA_REG, dma_cfg);
1048        sscape_write_unsafe(sscape->io_base, GA_DMAB_REG, 0x20);
1049
1050        mpu_irq_cfg |= mpu_irq_cfg << 2;
1051        val = sscape_read_unsafe(sscape->io_base, GA_HMCTL_REG) & 0xF7;
1052        if (joystick[dev])
1053                val |= 8;
1054        sscape_write_unsafe(sscape->io_base, GA_HMCTL_REG, val | 0x10);
1055        sscape_write_unsafe(sscape->io_base, GA_INTCFG_REG, 0xf0 | mpu_irq_cfg);
1056        sscape_write_unsafe(sscape->io_base,
1057                            GA_CDCFG_REG, 0x09 | DMA_8BIT
1058                            | (dma[dev] << 4) | (irq_cfg << 1));
1059        /*
1060         * Enable the master IRQ ...
1061         */
1062        sscape_write_unsafe(sscape->io_base, GA_INTENA_REG, 0x80);
1063
1064        spin_unlock_irqrestore(&sscape->lock, flags);
1065
1066        /*
1067         * We have now enabled the codec chip, and so we should
1068         * detect the AD1845 device ...
1069         */
1070        err = create_ad1845(card, wss_port[dev], irq[dev],
1071                            dma[dev], dma2[dev]);
1072        if (err < 0) {
1073                snd_printk(KERN_ERR
1074                                "sscape: No AD1845 device at 0x%lx, IRQ %d\n",
1075                                wss_port[dev], irq[dev]);
1076                goto _release_dma;
1077        }
1078        strcpy(card->driver, "SoundScape");
1079        strcpy(card->shortname, name);
1080        snprintf(card->longname, sizeof(card->longname),
1081                 "%s at 0x%lx, IRQ %d, DMA1 %d, DMA2 %d\n",
1082                 name, sscape->chip->port, sscape->chip->irq,
1083                 sscape->chip->dma1, sscape->chip->dma2);
1084
1085#define MIDI_DEVNUM  0
1086        if (sscape->type != SSCAPE_VIVO) {
1087                err = sscape_upload_bootblock(card);
1088                if (err >= 0)
1089                        err = sscape_upload_microcode(card, err);
1090
1091                if (err == 0) {
1092                        err = create_mpu401(card, MIDI_DEVNUM, port[dev],
1093                                            mpu_irq[dev]);
1094                        if (err < 0) {
1095                                snd_printk(KERN_ERR "sscape: Failed to create "
1096                                                "MPU-401 device at 0x%lx\n",
1097                                                port[dev]);
1098                                goto _release_dma;
1099                        }
1100
1101                        /*
1102                         * Initialize mixer
1103                         */
1104                        spin_lock_irqsave(&sscape->lock, flags);
1105                        sscape->midi_vol = 0;
1106                        host_write_ctrl_unsafe(sscape->io_base,
1107                                                CMD_SET_MIDI_VOL, 100);
1108                        host_write_ctrl_unsafe(sscape->io_base,
1109                                                sscape->midi_vol, 100);
1110                        host_write_ctrl_unsafe(sscape->io_base,
1111                                                CMD_XXX_MIDI_VOL, 100);
1112                        host_write_ctrl_unsafe(sscape->io_base,
1113                                                sscape->midi_vol, 100);
1114                        host_write_ctrl_unsafe(sscape->io_base,
1115                                                CMD_SET_EXTMIDI, 100);
1116                        host_write_ctrl_unsafe(sscape->io_base,
1117                                                0, 100);
1118                        host_write_ctrl_unsafe(sscape->io_base, CMD_ACK, 100);
1119
1120                        set_midi_mode_unsafe(sscape->io_base);
1121                        spin_unlock_irqrestore(&sscape->lock, flags);
1122                }
1123        }
1124
1125        /*
1126         * Now that we have successfully created this sound card,
1127         * it is safe to store the pointer.
1128         * NOTE: we only register the sound card's "destructor"
1129         *       function now that our "constructor" has completed.
1130         */
1131        card->private_free = soundscape_free;
1132
1133        return 0;
1134
1135_release_dma:
1136        free_dma(dma[dev]);
1137
1138_release_region:
1139        release_and_free_resource(wss_res);
1140        release_and_free_resource(io_res);
1141
1142        return err;
1143}
1144
1145
1146static int __devinit snd_sscape_match(struct device *pdev, unsigned int i)
1147{
1148        /*
1149         * Make sure we were given ALL of the other parameters.
1150         */
1151        if (port[i] == SNDRV_AUTO_PORT)
1152                return 0;
1153
1154        if (irq[i] == SNDRV_AUTO_IRQ ||
1155            mpu_irq[i] == SNDRV_AUTO_IRQ ||
1156            dma[i] == SNDRV_AUTO_DMA) {
1157                printk(KERN_INFO
1158                       "sscape: insufficient parameters, "
1159                       "need IO, IRQ, MPU-IRQ and DMA\n");
1160                return 0;
1161        }
1162
1163        return 1;
1164}
1165
1166static int __devinit snd_sscape_probe(struct device *pdev, unsigned int dev)
1167{
1168        struct snd_card *card;
1169        struct soundscape *sscape;
1170        int ret;
1171
1172        ret = snd_card_create(index[dev], id[dev], THIS_MODULE,
1173                              sizeof(struct soundscape), &card);
1174        if (ret < 0)
1175                return ret;
1176
1177        sscape = get_card_soundscape(card);
1178        sscape->type = SSCAPE;
1179
1180        dma[dev] &= 0x03;
1181        snd_card_set_dev(card, pdev);
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
1200static int __devexit snd_sscape_remove(struct device *devptr, unsigned int dev)
1201{
1202        snd_card_free(dev_get_drvdata(devptr));
1203        dev_set_drvdata(devptr, NULL);
1204        return 0;
1205}
1206
1207#define DEV_NAME "sscape"
1208
1209static struct isa_driver snd_sscape_driver = {
1210        .match          = snd_sscape_match,
1211        .probe          = snd_sscape_probe,
1212        .remove         = __devexit_p(snd_sscape_remove),
1213        /* FIXME: suspend/resume */
1214        .driver         = {
1215                .name   = DEV_NAME
1216        },
1217};
1218
1219#ifdef CONFIG_PNP
1220static inline int __devinit get_next_autoindex(int i)
1221{
1222        while (i < SNDRV_CARDS && port[i] != SNDRV_AUTO_PORT)
1223                ++i;
1224        return i;
1225}
1226
1227
1228static int __devinit sscape_pnp_detect(struct pnp_card_link *pcard,
1229                                       const struct pnp_card_device_id *pid)
1230{
1231        static int idx = 0;
1232        struct pnp_dev *dev;
1233        struct snd_card *card;
1234        struct soundscape *sscape;
1235        int ret;
1236
1237        /*
1238         * Allow this function to fail *quietly* if all the ISA PnP
1239         * devices were configured using module parameters instead.
1240         */
1241        idx = get_next_autoindex(idx);
1242        if (idx >= SNDRV_CARDS)
1243                return -ENOSPC;
1244
1245        /*
1246         * Check that we still have room for another sound card ...
1247         */
1248        dev = pnp_request_card_device(pcard, pid->devs[0].id, NULL);
1249        if (!dev)
1250                return -ENODEV;
1251
1252        if (!pnp_is_active(dev)) {
1253                if (pnp_activate_dev(dev) < 0) {
1254                        snd_printk(KERN_INFO "sscape: device is inactive\n");
1255                        return -EBUSY;
1256                }
1257        }
1258
1259        /*
1260         * Create a new ALSA sound card entry, in anticipation
1261         * of detecting our hardware ...
1262         */
1263        ret = snd_card_create(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        snd_card_set_dev(card, &pcard->card->dev);
1293
1294        ret = create_sscape(idx, card);
1295        if (ret < 0)
1296                goto _release_card;
1297
1298        ret = snd_card_register(card);
1299        if (ret < 0) {
1300                snd_printk(KERN_ERR "sscape: Failed to register sound card\n");
1301                goto _release_card;
1302        }
1303
1304        pnp_set_card_drvdata(pcard, card);
1305        ++idx;
1306        return 0;
1307
1308_release_card:
1309        snd_card_free(card);
1310        return ret;
1311}
1312
1313static void __devexit sscape_pnp_remove(struct pnp_card_link * pcard)
1314{
1315        snd_card_free(pnp_get_card_drvdata(pcard));
1316        pnp_set_card_drvdata(pcard, NULL);
1317}
1318
1319static struct pnp_card_driver sscape_pnpc_driver = {
1320        .flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
1321        .name = "sscape",
1322        .id_table = sscape_pnpids,
1323        .probe = sscape_pnp_detect,
1324        .remove = __devexit_p(sscape_pnp_remove),
1325};
1326
1327#endif /* CONFIG_PNP */
1328
1329static int __init sscape_init(void)
1330{
1331        int err;
1332
1333        err = isa_register_driver(&snd_sscape_driver, SNDRV_CARDS);
1334#ifdef CONFIG_PNP
1335        if (!err)
1336                isa_registered = 1;
1337
1338        err = pnp_register_card_driver(&sscape_pnpc_driver);
1339        if (!err)
1340                pnp_registered = 1;
1341
1342        if (isa_registered)
1343                err = 0;
1344#endif
1345        return err;
1346}
1347
1348static void __exit sscape_exit(void)
1349{
1350#ifdef CONFIG_PNP
1351        if (pnp_registered)
1352                pnp_unregister_card_driver(&sscape_pnpc_driver);
1353        if (isa_registered)
1354#endif
1355                isa_unregister_driver(&snd_sscape_driver);
1356}
1357
1358module_init(sscape_init);
1359module_exit(sscape_exit);
1360
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