sound/isa/sc6000.c

   1 /*
   2  *  Driver for Gallant SC-6000 soundcard. This card is also known as
   3  *  Audio Excel DSP 16 or Zoltrix AV302.
   4  *  These cards use CompuMedia ASC-9308 chip + AD1848 codec.
   5  *  SC-6600 and SC-7000 cards are also supported. They are based on
   6  *  CompuMedia ASC-9408 chip and CS4231 codec.
   7  *
   8  *  Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl>
   9  *
  10  *  I don't have documentation for this card. I used the driver
  11  *  for OSS/Free included in the kernel source as reference.
  12  *
  13  *  This program is free software; you can redistribute it and/or modify
  14  *  it under the terms of the GNU General Public License as published by
  15  *  the Free Software Foundation; either version 2 of the License, or
  16  *  (at your option) any later version.
  17  *
  18  *  This program is distributed in the hope that it will be useful,
  19  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  *  GNU General Public License for more details.
  22  *
  23  *  You should have received a copy of the GNU General Public License
  24  *  along with this program; if not, write to the Free Software
  25  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  26  */
  27
  28 #include <linux/module.h>
  29 #include <linux/delay.h>
  30 #include <linux/isa.h>
  31 #include <linux/io.h>
  32 #include <asm/dma.h>
  33 #include <sound/core.h>
  34 #include <sound/wss.h>
  35 #include <sound/opl3.h>
  36 #include <sound/mpu401.h>
  37 #include <sound/control.h>
  38 #define SNDRV_LEGACY_FIND_FREE_IRQ
  39 #define SNDRV_LEGACY_FIND_FREE_DMA
  40 #include <sound/initval.h>
  41
  42 MODULE_AUTHOR("Krzysztof Helt");
  43 MODULE_DESCRIPTION("Gallant SC-6000");
  44 MODULE_LICENSE("GPL");
  45 MODULE_SUPPORTED_DEVICE("{{Gallant, SC-6000},"
  46                         "{AudioExcel, Audio Excel DSP 16},"
  47                         "{Zoltrix, AV302}}");
  48
  49 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  50 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  51 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
  52 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220, 0x240 */
  53 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5, 7, 9, 10, 11 */
  54 static long mss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* 0x530, 0xe80 */
  55 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
  56                                                 /* 0x300, 0x310, 0x320, 0x330 */
  57 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;    /* 5, 7, 9, 10, 0 */
  58 static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;        /* 0, 1, 3 */
  59 static bool joystick[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = false };
  60
  61 module_param_array(index, int, NULL, 0444);
  62 MODULE_PARM_DESC(index, "Index value for sc-6000 based soundcard.");
  63 module_param_array(id, charp, NULL, 0444);
  64 MODULE_PARM_DESC(id, "ID string for sc-6000 based soundcard.");
  65 module_param_array(enable, bool, NULL, 0444);
  66 MODULE_PARM_DESC(enable, "Enable sc-6000 based soundcard.");
  67 module_param_hw_array(port, long, ioport, NULL, 0444);
  68 MODULE_PARM_DESC(port, "Port # for sc-6000 driver.");
  69 module_param_hw_array(mss_port, long, ioport, NULL, 0444);
  70 MODULE_PARM_DESC(mss_port, "MSS Port # for sc-6000 driver.");
  71 module_param_hw_array(mpu_port, long, ioport, NULL, 0444);
  72 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for sc-6000 driver.");
  73 module_param_hw_array(irq, int, irq, NULL, 0444);
  74 MODULE_PARM_DESC(irq, "IRQ # for sc-6000 driver.");
  75 module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
  76 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for sc-6000 driver.");
  77 module_param_hw_array(dma, int, dma, NULL, 0444);
  78 MODULE_PARM_DESC(dma, "DMA # for sc-6000 driver.");
  79 module_param_array(joystick, bool, NULL, 0444);
  80 MODULE_PARM_DESC(joystick, "Enable gameport.");
  81
  82 /*
  83  * Commands of SC6000's DSP (SBPRO+special).
  84  * Some of them are COMMAND_xx, in the future they may change.
  85  */
  86 #define WRITE_MDIRQ_CFG 0x50    /* Set M&I&DRQ mask (the real config)   */
  87 #define COMMAND_52      0x52    /*                                      */
  88 #define READ_HARD_CFG   0x58    /* Read Hardware Config (I/O base etc)  */
  89 #define COMMAND_5C      0x5c    /*                                      */
  90 #define COMMAND_60      0x60    /*                                      */
  91 #define COMMAND_66      0x66    /*                                      */
  92 #define COMMAND_6C      0x6c    /*                                      */
  93 #define COMMAND_6E      0x6e    /*                                      */
  94 #define COMMAND_88      0x88    /* Unknown command                      */
  95 #define DSP_INIT_MSS    0x8c    /* Enable Microsoft Sound System mode   */
  96 #define COMMAND_C5      0xc5    /*                                      */
  97 #define GET_DSP_VERSION 0xe1    /* Get DSP Version                      */
  98 #define GET_DSP_COPYRIGHT 0xe3  /* Get DSP Copyright                    */
  99
 100 /*
 101  * Offsets of SC6000 DSP I/O ports. The offset is added to base I/O port
 102  * to have the actual I/O port.
 103  * Register permissions are:
 104  * (wo) == Write Only
 105  * (ro) == Read  Only
 106  * (w-) == Write
 107  * (r-) == Read
 108  */
 109 #define DSP_RESET       0x06    /* offset of DSP RESET          (wo) */
 110 #define DSP_READ        0x0a    /* offset of DSP READ           (ro) */
 111 #define DSP_WRITE       0x0c    /* offset of DSP WRITE          (w-) */
 112 #define DSP_COMMAND     0x0c    /* offset of DSP COMMAND        (w-) */
 113 #define DSP_STATUS      0x0c    /* offset of DSP STATUS         (r-) */
 114 #define DSP_DATAVAIL    0x0e    /* offset of DSP DATA AVAILABLE (ro) */
 115
 116 #define PFX "sc6000: "
 117 #define DRV_NAME "SC-6000"
 118
 119 /* hardware dependent functions */
 120
 121 /*
 122  * sc6000_irq_to_softcfg - Decode irq number into cfg code.
 123  */
 124 static unsigned char sc6000_irq_to_softcfg(int irq)
 125 {
 126         unsigned char val = 0;
 127
 128         switch (irq) {
 129         case 5:
 130                 val = 0x28;
 131                 break;
 132         case 7:
 133                 val = 0x8;
 134                 break;
 135         case 9:
 136                 val = 0x10;
 137                 break;
 138         case 10:
 139                 val = 0x18;
 140                 break;
 141         case 11:
 142                 val = 0x20;
 143                 break;
 144         default:
 145                 break;
 146         }
 147         return val;
 148 }
 149
 150 /*
 151  * sc6000_dma_to_softcfg - Decode dma number into cfg code.
 152  */
 153 static unsigned char sc6000_dma_to_softcfg(int dma)
 154 {
 155         unsigned char val = 0;
 156
 157         switch (dma) {
 158         case 0:
 159                 val = 1;
 160                 break;
 161         case 1:
 162                 val = 2;
 163                 break;
 164         case 3:
 165                 val = 3;
 166                 break;
 167         default:
 168                 break;
 169         }
 170         return val;
 171 }
 172
 173 /*
 174  * sc6000_mpu_irq_to_softcfg - Decode MPU-401 irq number into cfg code.
 175  */
 176 static unsigned char sc6000_mpu_irq_to_softcfg(int mpu_irq)
 177 {
 178         unsigned char val = 0;
 179
 180         switch (mpu_irq) {
 181         case 5:
 182                 val = 4;
 183                 break;
 184         case 7:
 185                 val = 0x44;
 186                 break;
 187         case 9:
 188                 val = 0x84;
 189                 break;
 190         case 10:
 191                 val = 0xc4;
 192                 break;
 193         default:
 194                 break;
 195         }
 196         return val;
 197 }
 198
 199 static int sc6000_wait_data(char __iomem *vport)
 200 {
 201         int loop = 1000;
 202         unsigned char val = 0;
 203
 204         do {
 205                 val = ioread8(vport + DSP_DATAVAIL);
 206                 if (val & 0x80)
 207                         return 0;
 208                 cpu_relax();
 209         } while (loop--);
 210
 211         return -EAGAIN;
 212 }
 213
 214 static int sc6000_read(char __iomem *vport)
 215 {
 216         if (sc6000_wait_data(vport))
 217                 return -EBUSY;
 218
 219         return ioread8(vport + DSP_READ);
 220
 221 }
 222
 223 static int sc6000_write(char __iomem *vport, int cmd)
 224 {
 225         unsigned char val;
 226         int loop = 500000;
 227
 228         do {
 229                 val = ioread8(vport + DSP_STATUS);
 230                 /*
 231                  * DSP ready to receive data if bit 7 of val == 0
 232                  */
 233                 if (!(val & 0x80)) {
 234                         iowrite8(cmd, vport + DSP_COMMAND);
 235                         return 0;
 236                 }
 237                 cpu_relax();
 238         } while (loop--);
 239
 240         snd_printk(KERN_ERR "DSP Command (0x%x) timeout.\n", cmd);
 241
 242         return -EIO;
 243 }
 244
 245 static int sc6000_dsp_get_answer(char __iomem *vport, int command,
 246                                  char *data, int data_len)
 247 {
 248         int len = 0;
 249
 250         if (sc6000_write(vport, command)) {
 251                 snd_printk(KERN_ERR "CMD 0x%x: failed!\n", command);
 252                 return -EIO;
 253         }
 254
 255         do {
 256                 int val = sc6000_read(vport);
 257
 258                 if (val < 0)
 259                         break;
 260
 261                 data[len++] = val;
 262
 263         } while (len < data_len);
 264
 265         /*
 266          * If no more data available, return to the caller, no error if len>0.
 267          * We have no other way to know when the string is finished.
 268          */
 269         return len ? len : -EIO;
 270 }
 271
 272 static int sc6000_dsp_reset(char __iomem *vport)
 273 {
 274         iowrite8(1, vport + DSP_RESET);
 275         udelay(10);
 276         iowrite8(0, vport + DSP_RESET);
 277         udelay(20);
 278         if (sc6000_read(vport) == 0xaa)
 279                 return 0;
 280         return -ENODEV;
 281 }
 282
 283 /* detection and initialization */
 284 static int sc6000_hw_cfg_write(char __iomem *vport, const int *cfg)
 285 {
 286         if (sc6000_write(vport, COMMAND_6C) < 0) {
 287                 snd_printk(KERN_WARNING "CMD 0x%x: failed!\n", COMMAND_6C);
 288                 return -EIO;
 289         }
 290         if (sc6000_write(vport, COMMAND_5C) < 0) {
 291                 snd_printk(KERN_ERR "CMD 0x%x: failed!\n", COMMAND_5C);
 292                 return -EIO;
 293         }
 294         if (sc6000_write(vport, cfg[0]) < 0) {
 295                 snd_printk(KERN_ERR "DATA 0x%x: failed!\n", cfg[0]);
 296                 return -EIO;
 297         }
 298         if (sc6000_write(vport, cfg[1]) < 0) {
 299                 snd_printk(KERN_ERR "DATA 0x%x: failed!\n", cfg[1]);
 300                 return -EIO;
 301         }
 302         if (sc6000_write(vport, COMMAND_C5) < 0) {
 303                 snd_printk(KERN_ERR "CMD 0x%x: failed!\n", COMMAND_C5);
 304                 return -EIO;
 305         }
 306
 307         return 0;
 308 }
 309
 310 static int sc6000_cfg_write(char __iomem *vport, unsigned char softcfg)
 311 {
 312
 313         if (sc6000_write(vport, WRITE_MDIRQ_CFG)) {
 314                 snd_printk(KERN_ERR "CMD 0x%x: failed!\n", WRITE_MDIRQ_CFG);
 315                 return -EIO;
 316         }
 317         if (sc6000_write(vport, softcfg)) {
 318                 snd_printk(KERN_ERR "sc6000_cfg_write: failed!\n");
 319                 return -EIO;
 320         }
 321         return 0;
 322 }
 323
 324 static int sc6000_setup_board(char __iomem *vport, int config)
 325 {
 326         int loop = 10;
 327
 328         do {
 329                 if (sc6000_write(vport, COMMAND_88)) {
 330                         snd_printk(KERN_ERR "CMD 0x%x: failed!\n",
 331                                    COMMAND_88);
 332                         return -EIO;
 333                 }
 334         } while ((sc6000_wait_data(vport) < 0) && loop--);
 335
 336         if (sc6000_read(vport) < 0) {
 337                 snd_printk(KERN_ERR "sc6000_read after CMD 0x%x: failed\n",
 338                            COMMAND_88);
 339                 return -EIO;
 340         }
 341
 342         if (sc6000_cfg_write(vport, config))
 343                 return -ENODEV;
 344
 345         return 0;
 346 }
 347
 348 static int sc6000_init_mss(char __iomem *vport, int config,
 349                            char __iomem *vmss_port, int mss_config)
 350 {
 351         if (sc6000_write(vport, DSP_INIT_MSS)) {
 352                 snd_printk(KERN_ERR "sc6000_init_mss [0x%x]: failed!\n",
 353                            DSP_INIT_MSS);
 354                 return -EIO;
 355         }
 356
 357         msleep(10);
 358
 359         if (sc6000_cfg_write(vport, config))
 360                 return -EIO;
 361
 362         iowrite8(mss_config, vmss_port);
 363
 364         return 0;
 365 }
 366
 367 static void sc6000_hw_cfg_encode(char __iomem *vport, int *cfg,
 368                                  long xport, long xmpu,
 369                                  long xmss_port, int joystick)
 370 {
 371         cfg[0] = 0;
 372         cfg[1] = 0;
 373         if (xport == 0x240)
 374                 cfg[0] |= 1;
 375         if (xmpu != SNDRV_AUTO_PORT) {
 376                 cfg[0] |= (xmpu & 0x30) >> 2;
 377                 cfg[1] |= 0x20;
 378         }
 379         if (xmss_port == 0xe80)
 380                 cfg[0] |= 0x10;
 381         cfg[0] |= 0x40;         /* always set */
 382         if (!joystick)
 383                 cfg[0] |= 0x02;
 384         cfg[1] |= 0x80;         /* enable WSS system */
 385         cfg[1] &= ~0x40;        /* disable IDE */
 386         snd_printd("hw cfg %x, %x\n", cfg[0], cfg[1]);
 387 }
 388
 389 static int sc6000_init_board(char __iomem *vport,
 390                              char __iomem *vmss_port, int dev)
 391 {
 392         char answer[15];
 393         char version[2];
 394         int mss_config = sc6000_irq_to_softcfg(irq[dev]) |
 395                          sc6000_dma_to_softcfg(dma[dev]);
 396         int config = mss_config |
 397                      sc6000_mpu_irq_to_softcfg(mpu_irq[dev]);
 398         int err;
 399         int old = 0;
 400
 401         err = sc6000_dsp_reset(vport);
 402         if (err < 0) {
 403                 snd_printk(KERN_ERR "sc6000_dsp_reset: failed!\n");
 404                 return err;
 405         }
 406
 407         memset(answer, 0, sizeof(answer));
 408         err = sc6000_dsp_get_answer(vport, GET_DSP_COPYRIGHT, answer, 15);
 409         if (err <= 0) {
 410                 snd_printk(KERN_ERR "sc6000_dsp_copyright: failed!\n");
 411                 return -ENODEV;
 412         }
 413         /*
 414          * My SC-6000 card return "SC-6000" in DSPCopyright, so
 415          * if we have something different, we have to be warned.
 416          */
 417         if (strncmp("SC-6000", answer, 7))
 418                 snd_printk(KERN_WARNING "Warning: non SC-6000 audio card!\n");
 419
 420         if (sc6000_dsp_get_answer(vport, GET_DSP_VERSION, version, 2) < 2) {
 421                 snd_printk(KERN_ERR "sc6000_dsp_version: failed!\n");
 422                 return -ENODEV;
 423         }
 424         printk(KERN_INFO PFX "Detected model: %s, DSP version %d.%d\n",
 425                 answer, version[0], version[1]);
 426
 427         /* set configuration */
 428         sc6000_write(vport, COMMAND_5C);
 429         if (sc6000_read(vport) < 0)
 430                 old = 1;
 431
 432         if (!old) {
 433                 int cfg[2];
 434                 sc6000_hw_cfg_encode(vport, &cfg[0], port[dev], mpu_port[dev],
 435                                      mss_port[dev], joystick[dev]);
 436                 if (sc6000_hw_cfg_write(vport, cfg) < 0) {
 437                         snd_printk(KERN_ERR "sc6000_hw_cfg_write: failed!\n");
 438                         return -EIO;
 439                 }
 440         }
 441         err = sc6000_setup_board(vport, config);
 442         if (err < 0) {
 443                 snd_printk(KERN_ERR "sc6000_setup_board: failed!\n");
 444                 return -ENODEV;
 445         }
 446
 447         sc6000_dsp_reset(vport);
 448
 449         if (!old) {
 450                 sc6000_write(vport, COMMAND_60);
 451                 sc6000_write(vport, 0x02);
 452                 sc6000_dsp_reset(vport);
 453         }
 454
 455         err = sc6000_setup_board(vport, config);
 456         if (err < 0) {
 457                 snd_printk(KERN_ERR "sc6000_setup_board: failed!\n");
 458                 return -ENODEV;
 459         }
 460         err = sc6000_init_mss(vport, config, vmss_port, mss_config);
 461         if (err < 0) {
 462                 snd_printk(KERN_ERR "Cannot initialize "
 463                            "Microsoft Sound System mode.\n");
 464                 return -ENODEV;
 465         }
 466
 467         return 0;
 468 }
 469
 470 static int snd_sc6000_mixer(struct snd_wss *chip)
 471 {
 472         struct snd_card *card = chip->card;
 473         struct snd_ctl_elem_id id1, id2;
 474         int err;
 475
 476         memset(&id1, 0, sizeof(id1));
 477         memset(&id2, 0, sizeof(id2));
 478         id1.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 479         id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 480         /* reassign AUX0 to FM */
 481         strcpy(id1.name, "Aux Playback Switch");
 482         strcpy(id2.name, "FM Playback Switch");
 483         err = snd_ctl_rename_id(card, &id1, &id2);
 484         if (err < 0)
 485                 return err;
 486         strcpy(id1.name, "Aux Playback Volume");
 487         strcpy(id2.name, "FM Playback Volume");
 488         err = snd_ctl_rename_id(card, &id1, &id2);
 489         if (err < 0)
 490                 return err;
 491         /* reassign AUX1 to CD */
 492         strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
 493         strcpy(id2.name, "CD Playback Switch");
 494         err = snd_ctl_rename_id(card, &id1, &id2);
 495         if (err < 0)
 496                 return err;
 497         strcpy(id1.name, "Aux Playback Volume");
 498         strcpy(id2.name, "CD Playback Volume");
 499         err = snd_ctl_rename_id(card, &id1, &id2);
 500         if (err < 0)
 501                 return err;
 502         return 0;
 503 }
 504
 505 static int snd_sc6000_match(struct device *devptr, unsigned int dev)
 506 {
 507         if (!enable[dev])
 508                 return 0;
 509         if (port[dev] == SNDRV_AUTO_PORT) {
 510                 printk(KERN_ERR PFX "specify IO port\n");
 511                 return 0;
 512         }
 513         if (mss_port[dev] == SNDRV_AUTO_PORT) {
 514                 printk(KERN_ERR PFX "specify MSS port\n");
 515                 return 0;
 516         }
 517         if (port[dev] != 0x220 && port[dev] != 0x240) {
 518                 printk(KERN_ERR PFX "Port must be 0x220 or 0x240\n");
 519                 return 0;
 520         }
 521         if (mss_port[dev] != 0x530 && mss_port[dev] != 0xe80) {
 522                 printk(KERN_ERR PFX "MSS port must be 0x530 or 0xe80\n");
 523                 return 0;
 524         }
 525         if (irq[dev] != SNDRV_AUTO_IRQ && !sc6000_irq_to_softcfg(irq[dev])) {
 526                 printk(KERN_ERR PFX "invalid IRQ %d\n", irq[dev]);
 527                 return 0;
 528         }
 529         if (dma[dev] != SNDRV_AUTO_DMA && !sc6000_dma_to_softcfg(dma[dev])) {
 530                 printk(KERN_ERR PFX "invalid DMA %d\n", dma[dev]);
 531                 return 0;
 532         }
 533         if (mpu_port[dev] != SNDRV_AUTO_PORT &&
 534             (mpu_port[dev] & ~0x30L) != 0x300) {
 535                 printk(KERN_ERR PFX "invalid MPU-401 port %lx\n",
 536                         mpu_port[dev]);
 537                 return 0;
 538         }
 539         if (mpu_port[dev] != SNDRV_AUTO_PORT &&
 540             mpu_irq[dev] != SNDRV_AUTO_IRQ && mpu_irq[dev] != 0 &&
 541             !sc6000_mpu_irq_to_softcfg(mpu_irq[dev])) {
 542                 printk(KERN_ERR PFX "invalid MPU-401 IRQ %d\n", mpu_irq[dev]);
 543                 return 0;
 544         }
 545         return 1;
 546 }
 547
 548 static int snd_sc6000_probe(struct device *devptr, unsigned int dev)
 549 {
 550         static int possible_irqs[] = { 5, 7, 9, 10, 11, -1 };
 551         static int possible_dmas[] = { 1, 3, 0, -1 };
 552         int err;
 553         int xirq = irq[dev];
 554         int xdma = dma[dev];
 555         struct snd_card *card;
 556         struct snd_wss *chip;
 557         struct snd_opl3 *opl3;
 558         char __iomem **vport;
 559         char __iomem *vmss_port;
 560
 561
 562         err = snd_card_new(devptr, index[dev], id[dev], THIS_MODULE,
 563                            sizeof(vport), &card);
 564         if (err < 0)
 565                 return err;
 566
 567         vport = card->private_data;
 568         if (xirq == SNDRV_AUTO_IRQ) {
 569                 xirq = snd_legacy_find_free_irq(possible_irqs);
 570                 if (xirq < 0) {
 571                         snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
 572                         err = -EBUSY;
 573                         goto err_exit;
 574                 }
 575         }
 576
 577         if (xdma == SNDRV_AUTO_DMA) {
 578                 xdma = snd_legacy_find_free_dma(possible_dmas);
 579                 if (xdma < 0) {
 580                         snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
 581                         err = -EBUSY;
 582                         goto err_exit;
 583                 }
 584         }
 585
 586         if (!request_region(port[dev], 0x10, DRV_NAME)) {
 587                 snd_printk(KERN_ERR PFX
 588                            "I/O port region is already in use.\n");
 589                 err = -EBUSY;
 590                 goto err_exit;
 591         }
 592         *vport = devm_ioport_map(devptr, port[dev], 0x10);
 593         if (*vport == NULL) {
 594                 snd_printk(KERN_ERR PFX
 595                            "I/O port cannot be iomapped.\n");
 596                 err = -EBUSY;
 597                 goto err_unmap1;
 598         }
 599
 600         /* to make it marked as used */
 601         if (!request_region(mss_port[dev], 4, DRV_NAME)) {
 602                 snd_printk(KERN_ERR PFX
 603                            "SC-6000 port I/O port region is already in use.\n");
 604                 err = -EBUSY;
 605                 goto err_unmap1;
 606         }
 607         vmss_port = devm_ioport_map(devptr, mss_port[dev], 4);
 608         if (!vmss_port) {
 609                 snd_printk(KERN_ERR PFX
 610                            "MSS port I/O cannot be iomapped.\n");
 611                 err = -EBUSY;
 612                 goto err_unmap2;
 613         }
 614
 615         snd_printd("Initializing BASE[0x%lx] IRQ[%d] DMA[%d] MIRQ[%d]\n",
 616                    port[dev], xirq, xdma,
 617                    mpu_irq[dev] == SNDRV_AUTO_IRQ ? 0 : mpu_irq[dev]);
 618
 619         err = sc6000_init_board(*vport, vmss_port, dev);
 620         if (err < 0)
 621                 goto err_unmap2;
 622
 623         err = snd_wss_create(card, mss_port[dev] + 4,  -1, xirq, xdma, -1,
 624                              WSS_HW_DETECT, 0, &chip);
 625         if (err < 0)
 626                 goto err_unmap2;
 627
 628         err = snd_wss_pcm(chip, 0);
 629         if (err < 0) {
 630                 snd_printk(KERN_ERR PFX
 631                            "error creating new WSS PCM device\n");
 632                 goto err_unmap2;
 633         }
 634         err = snd_wss_mixer(chip);
 635         if (err < 0) {
 636                 snd_printk(KERN_ERR PFX "error creating new WSS mixer\n");
 637                 goto err_unmap2;
 638         }
 639         err = snd_sc6000_mixer(chip);
 640         if (err < 0) {
 641                 snd_printk(KERN_ERR PFX "the mixer rewrite failed\n");
 642                 goto err_unmap2;
 643         }
 644         if (snd_opl3_create(card,
 645                             0x388, 0x388 + 2,
 646                             OPL3_HW_AUTO, 0, &opl3) < 0) {
 647                 snd_printk(KERN_ERR PFX "no OPL device at 0x%x-0x%x ?\n",
 648                            0x388, 0x388 + 2);
 649         } else {
 650                 err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
 651                 if (err < 0)
 652                         goto err_unmap2;
 653         }
 654
 655         if (mpu_port[dev] != SNDRV_AUTO_PORT) {
 656                 if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
 657                         mpu_irq[dev] = -1;
 658                 if (snd_mpu401_uart_new(card, 0,
 659                                         MPU401_HW_MPU401,
 660                                         mpu_port[dev], 0,
 661                                         mpu_irq[dev], NULL) < 0)
 662                         snd_printk(KERN_ERR "no MPU-401 device at 0x%lx ?\n",
 663                                         mpu_port[dev]);
 664         }
 665
 666         strcpy(card->driver, DRV_NAME);
 667         strcpy(card->shortname, "SC-6000");
 668         sprintf(card->longname, "Gallant SC-6000 at 0x%lx, irq %d, dma %d",
 669                 mss_port[dev], xirq, xdma);
 670
 671         err = snd_card_register(card);
 672         if (err < 0)
 673                 goto err_unmap2;
 674
 675         dev_set_drvdata(devptr, card);
 676         return 0;
 677
 678 err_unmap2:
 679         sc6000_setup_board(*vport, 0);
 680         release_region(mss_port[dev], 4);
 681 err_unmap1:
 682         release_region(port[dev], 0x10);
 683 err_exit:
 684         snd_card_free(card);
 685         return err;
 686 }
 687
 688 static int snd_sc6000_remove(struct device *devptr, unsigned int dev)
 689 {
 690         struct snd_card *card = dev_get_drvdata(devptr);
 691         char __iomem **vport = card->private_data;
 692
 693         if (sc6000_setup_board(*vport, 0) < 0)
 694                 snd_printk(KERN_WARNING "sc6000_setup_board failed on exit!\n");
 695
 696         release_region(port[dev], 0x10);
 697         release_region(mss_port[dev], 4);
 698
 699         snd_card_free(card);
 700         return 0;
 701 }
 702
 703 static struct isa_driver snd_sc6000_driver = {
 704         .match          = snd_sc6000_match,
 705         .probe          = snd_sc6000_probe,
 706         .remove         = snd_sc6000_remove,
 707         /* FIXME: suspend/resume */
 708         .driver         = {
 709                 .name   = DRV_NAME,
 710         },
 711 };
 712
 713
 714 module_isa_driver(snd_sc6000_driver, SNDRV_CARDS);