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sc6000.c

/*
 *  Driver for Gallant SC-6000 soundcard. This card is also known as
 *  Audio Excel DSP 16 or Zoltrix AV302.
 *  These cards use CompuMedia ASC-9308 chip + AD1848 codec.
 *  SC-6600 and SC-7000 cards are also supported. They are based on
 *  CompuMedia ASC-9408 chip and CS4231 codec.
 *
 *  Copyright (C) 2007 Krzysztof Helt <krzysztof.h1@wp.pl>
 *
 *  I don't have documentation for this card. I used the driver
 *  for OSS/Free included in the kernel source as reference.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/module.h>
#include <linux/delay.h>
#include <linux/isa.h>
#include <linux/io.h>
#include <asm/dma.h>
#include <sound/core.h>
#include <sound/wss.h>
#include <sound/opl3.h>
#include <sound/mpu401.h>
#include <sound/control.h>
#define SNDRV_LEGACY_FIND_FREE_IRQ
#define SNDRV_LEGACY_FIND_FREE_DMA
#include <sound/initval.h>

MODULE_AUTHOR("Krzysztof Helt");
MODULE_DESCRIPTION("Gallant SC-6000");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Gallant, SC-6000},"
                  "{AudioExcel, Audio Excel DSP 16},"
                  "{Zoltrix, AV302}}");

static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;    /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;     /* ID for this card */
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;      /* Enable this card */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;   /* 0x220, 0x240 */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;      /* 5, 7, 9, 10, 11 */
static long mss_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x530, 0xe80 */
static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;
                                    /* 0x300, 0x310, 0x320, 0x330 */
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;  /* 5, 7, 9, 10, 0 */
static int dma[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;      /* 0, 1, 3 */
static bool joystick[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = false };

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for sc-6000 based soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for sc-6000 based soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable sc-6000 based soundcard.");
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for sc-6000 driver.");
module_param_array(mss_port, long, NULL, 0444);
MODULE_PARM_DESC(mss_port, "MSS Port # for sc-6000 driver.");
module_param_array(mpu_port, long, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for sc-6000 driver.");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for sc-6000 driver.");
module_param_array(mpu_irq, int, NULL, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for sc-6000 driver.");
module_param_array(dma, int, NULL, 0444);
MODULE_PARM_DESC(dma, "DMA # for sc-6000 driver.");
module_param_array(joystick, bool, NULL, 0444);
MODULE_PARM_DESC(joystick, "Enable gameport.");

/*
 * Commands of SC6000's DSP (SBPRO+special).
 * Some of them are COMMAND_xx, in the future they may change.
 */
#define WRITE_MDIRQ_CFG 0x50  /* Set M&I&DRQ mask (the real config)     */
#define COMMAND_52      0x52  /*                            */
#define READ_HARD_CFG   0x58  /* Read Hardware Config (I/O base etc)    */
#define COMMAND_5C      0x5c  /*                            */
#define COMMAND_60      0x60  /*                            */
#define COMMAND_66      0x66  /*                            */
#define COMMAND_6C      0x6c  /*                            */
#define COMMAND_6E      0x6e  /*                            */
#define COMMAND_88      0x88  /* Unknown command                  */
#define DSP_INIT_MSS    0x8c  /* Enable Microsoft Sound System mode     */
#define COMMAND_C5      0xc5  /*                            */
#define GET_DSP_VERSION 0xe1  /* Get DSP Version                  */
#define GET_DSP_COPYRIGHT 0xe3      /* Get DSP Copyright                */

/*
 * Offsets of SC6000 DSP I/O ports. The offset is added to base I/O port
 * to have the actual I/O port.
 * Register permissions are:
 * (wo) == Write Only
 * (ro) == Read  Only
 * (w-) == Write
 * (r-) == Read
 */
#define DSP_RESET 0x06  /* offset of DSP RESET        (wo) */
#define DSP_READ  0x0a  /* offset of DSP READ         (ro) */
#define DSP_WRITE 0x0c  /* offset of DSP WRITE        (w-) */
#define DSP_COMMAND     0x0c  /* offset of DSP COMMAND      (w-) */
#define DSP_STATUS      0x0c  /* offset of DSP STATUS       (r-) */
#define DSP_DATAVAIL    0x0e  /* offset of DSP DATA AVAILABLE     (ro) */

#define PFX "sc6000: "
#define DRV_NAME "SC-6000"

/* hardware dependent functions */

/*
 * sc6000_irq_to_softcfg - Decode irq number into cfg code.
 */
static __devinit unsigned char sc6000_irq_to_softcfg(int irq)
{
      unsigned char val = 0;

      switch (irq) {
      case 5:
            val = 0x28;
            break;
      case 7:
            val = 0x8;
            break;
      case 9:
            val = 0x10;
            break;
      case 10:
            val = 0x18;
            break;
      case 11:
            val = 0x20;
            break;
      default:
            break;
      }
      return val;
}

/*
 * sc6000_dma_to_softcfg - Decode dma number into cfg code.
 */
static __devinit unsigned char sc6000_dma_to_softcfg(int dma)
{
      unsigned char val = 0;

      switch (dma) {
      case 0:
            val = 1;
            break;
      case 1:
            val = 2;
            break;
      case 3:
            val = 3;
            break;
      default:
            break;
      }
      return val;
}

/*
 * sc6000_mpu_irq_to_softcfg - Decode MPU-401 irq number into cfg code.
 */
static __devinit unsigned char sc6000_mpu_irq_to_softcfg(int mpu_irq)
{
      unsigned char val = 0;

      switch (mpu_irq) {
      case 5:
            val = 4;
            break;
      case 7:
            val = 0x44;
            break;
      case 9:
            val = 0x84;
            break;
      case 10:
            val = 0xc4;
            break;
      default:
            break;
      }
      return val;
}

static int sc6000_wait_data(char __iomem *vport)
{
      int loop = 1000;
      unsigned char val = 0;

      do {
            val = ioread8(vport + DSP_DATAVAIL);
            if (val & 0x80)
                  return 0;
            cpu_relax();
      } while (loop--);

      return -EAGAIN;
}

static int sc6000_read(char __iomem *vport)
{
      if (sc6000_wait_data(vport))
            return -EBUSY;

      return ioread8(vport + DSP_READ);

}

static int sc6000_write(char __iomem *vport, int cmd)
{
      unsigned char val;
      int loop = 500000;

      do {
            val = ioread8(vport + DSP_STATUS);
            /*
             * DSP ready to receive data if bit 7 of val == 0
             */
            if (!(val & 0x80)) {
                  iowrite8(cmd, vport + DSP_COMMAND);
                  return 0;
            }
            cpu_relax();
      } while (loop--);

      snd_printk(KERN_ERR "DSP Command (0x%x) timeout.\n", cmd);

      return -EIO;
}

static int __devinit sc6000_dsp_get_answer(char __iomem *vport, int command,
                                 char *data, int data_len)
{
      int len = 0;

      if (sc6000_write(vport, command)) {
            snd_printk(KERN_ERR "CMD 0x%x: failed!\n", command);
            return -EIO;
      }

      do {
            int val = sc6000_read(vport);

            if (val < 0)
                  break;

            data[len++] = val;

      } while (len < data_len);

      /*
       * If no more data available, return to the caller, no error if len>0.
       * We have no other way to know when the string is finished.
       */
      return len ? len : -EIO;
}

static int __devinit sc6000_dsp_reset(char __iomem *vport)
{
      iowrite8(1, vport + DSP_RESET);
      udelay(10);
      iowrite8(0, vport + DSP_RESET);
      udelay(20);
      if (sc6000_read(vport) == 0xaa)
            return 0;
      return -ENODEV;
}

/* detection and initialization */
static int __devinit sc6000_hw_cfg_write(char __iomem *vport, const int *cfg)
{
      if (sc6000_write(vport, COMMAND_6C) < 0) {
            snd_printk(KERN_WARNING "CMD 0x%x: failed!\n", COMMAND_6C);
            return -EIO;
      }
      if (sc6000_write(vport, COMMAND_5C) < 0) {
            snd_printk(KERN_ERR "CMD 0x%x: failed!\n", COMMAND_5C);
            return -EIO;
      }
      if (sc6000_write(vport, cfg[0]) < 0) {
            snd_printk(KERN_ERR "DATA 0x%x: failed!\n", cfg[0]);
            return -EIO;
      }
      if (sc6000_write(vport, cfg[1]) < 0) {
            snd_printk(KERN_ERR "DATA 0x%x: failed!\n", cfg[1]);
            return -EIO;
      }
      if (sc6000_write(vport, COMMAND_C5) < 0) {
            snd_printk(KERN_ERR "CMD 0x%x: failed!\n", COMMAND_C5);
            return -EIO;
      }

      return 0;
}

static int sc6000_cfg_write(char __iomem *vport, unsigned char softcfg)
{

      if (sc6000_write(vport, WRITE_MDIRQ_CFG)) {
            snd_printk(KERN_ERR "CMD 0x%x: failed!\n", WRITE_MDIRQ_CFG);
            return -EIO;
      }
      if (sc6000_write(vport, softcfg)) {
            snd_printk(KERN_ERR "sc6000_cfg_write: failed!\n");
            return -EIO;
      }
      return 0;
}

static int sc6000_setup_board(char __iomem *vport, int config)
{
      int loop = 10;

      do {
            if (sc6000_write(vport, COMMAND_88)) {
                  snd_printk(KERN_ERR "CMD 0x%x: failed!\n",
                           COMMAND_88);
                  return -EIO;
            }
      } while ((sc6000_wait_data(vport) < 0) && loop--);

      if (sc6000_read(vport) < 0) {
            snd_printk(KERN_ERR "sc6000_read after CMD 0x%x: failed\n",
                     COMMAND_88);
            return -EIO;
      }

      if (sc6000_cfg_write(vport, config))
            return -ENODEV;

      return 0;
}

static int __devinit sc6000_init_mss(char __iomem *vport, int config,
                             char __iomem *vmss_port, int mss_config)
{
      if (sc6000_write(vport, DSP_INIT_MSS)) {
            snd_printk(KERN_ERR "sc6000_init_mss [0x%x]: failed!\n",
                     DSP_INIT_MSS);
            return -EIO;
      }

      msleep(10);

      if (sc6000_cfg_write(vport, config))
            return -EIO;

      iowrite8(mss_config, vmss_port);

      return 0;
}

static void __devinit sc6000_hw_cfg_encode(char __iomem *vport, int *cfg,
                                 long xport, long xmpu,
                                 long xmss_port, int joystick)
{
      cfg[0] = 0;
      cfg[1] = 0;
      if (xport == 0x240)
            cfg[0] |= 1;
      if (xmpu != SNDRV_AUTO_PORT) {
            cfg[0] |= (xmpu & 0x30) >> 2;
            cfg[1] |= 0x20;
      }
      if (xmss_port == 0xe80)
            cfg[0] |= 0x10;
      cfg[0] |= 0x40;         /* always set */
      if (!joystick)
            cfg[0] |= 0x02;
      cfg[1] |= 0x80;         /* enable WSS system */
      cfg[1] &= ~0x40;  /* disable IDE */
      snd_printd("hw cfg %x, %x\n", cfg[0], cfg[1]);
}

static int __devinit sc6000_init_board(char __iomem *vport,
                              char __iomem *vmss_port, int dev)
{
      char answer[15];
      char version[2];
      int mss_config = sc6000_irq_to_softcfg(irq[dev]) |
                   sc6000_dma_to_softcfg(dma[dev]);
      int config = mss_config |
                 sc6000_mpu_irq_to_softcfg(mpu_irq[dev]);
      int err;
      int old = 0;

      err = sc6000_dsp_reset(vport);
      if (err < 0) {
            snd_printk(KERN_ERR "sc6000_dsp_reset: failed!\n");
            return err;
      }

      memset(answer, 0, sizeof(answer));
      err = sc6000_dsp_get_answer(vport, GET_DSP_COPYRIGHT, answer, 15);
      if (err <= 0) {
            snd_printk(KERN_ERR "sc6000_dsp_copyright: failed!\n");
            return -ENODEV;
      }
      /*
       * My SC-6000 card return "SC-6000" in DSPCopyright, so
       * if we have something different, we have to be warned.
       */
      if (strncmp("SC-6000", answer, 7))
            snd_printk(KERN_WARNING "Warning: non SC-6000 audio card!\n");

      if (sc6000_dsp_get_answer(vport, GET_DSP_VERSION, version, 2) < 2) {
            snd_printk(KERN_ERR "sc6000_dsp_version: failed!\n");
            return -ENODEV;
      }
      printk(KERN_INFO PFX "Detected model: %s, DSP version %d.%d\n",
            answer, version[0], version[1]);

      /* set configuration */
      sc6000_write(vport, COMMAND_5C);
      if (sc6000_read(vport) < 0)
            old = 1;

      if (!old) {
            int cfg[2];
            sc6000_hw_cfg_encode(vport, &cfg[0], port[dev], mpu_port[dev],
                             mss_port[dev], joystick[dev]);
            if (sc6000_hw_cfg_write(vport, cfg) < 0) {
                  snd_printk(KERN_ERR "sc6000_hw_cfg_write: failed!\n");
                  return -EIO;
            }
      }
      err = sc6000_setup_board(vport, config);
      if (err < 0) {
            snd_printk(KERN_ERR "sc6000_setup_board: failed!\n");
            return -ENODEV;
      }

      sc6000_dsp_reset(vport);

      if (!old) {
            sc6000_write(vport, COMMAND_60);
            sc6000_write(vport, 0x02);
            sc6000_dsp_reset(vport);
      }

      err = sc6000_setup_board(vport, config);
      if (err < 0) {
            snd_printk(KERN_ERR "sc6000_setup_board: failed!\n");
            return -ENODEV;
      }
      err = sc6000_init_mss(vport, config, vmss_port, mss_config);
      if (err < 0) {
            snd_printk(KERN_ERR "Cannot initialize "
                     "Microsoft Sound System mode.\n");
            return -ENODEV;
      }

      return 0;
}

static int __devinit snd_sc6000_mixer(struct snd_wss *chip)
{
      struct snd_card *card = chip->card;
      struct snd_ctl_elem_id id1, id2;
      int err;

      memset(&id1, 0, sizeof(id1));
      memset(&id2, 0, sizeof(id2));
      id1.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
      id2.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
      /* reassign AUX0 to FM */
      strcpy(id1.name, "Aux Playback Switch");
      strcpy(id2.name, "FM Playback Switch");
      err = snd_ctl_rename_id(card, &id1, &id2);
      if (err < 0)
            return err;
      strcpy(id1.name, "Aux Playback Volume");
      strcpy(id2.name, "FM Playback Volume");
      err = snd_ctl_rename_id(card, &id1, &id2);
      if (err < 0)
            return err;
      /* reassign AUX1 to CD */
      strcpy(id1.name, "Aux Playback Switch"); id1.index = 1;
      strcpy(id2.name, "CD Playback Switch");
      err = snd_ctl_rename_id(card, &id1, &id2);
      if (err < 0)
            return err;
      strcpy(id1.name, "Aux Playback Volume");
      strcpy(id2.name, "CD Playback Volume");
      err = snd_ctl_rename_id(card, &id1, &id2);
      if (err < 0)
            return err;
      return 0;
}

static int __devinit snd_sc6000_match(struct device *devptr, unsigned int dev)
{
      if (!enable[dev])
            return 0;
      if (port[dev] == SNDRV_AUTO_PORT) {
            printk(KERN_ERR PFX "specify IO port\n");
            return 0;
      }
      if (mss_port[dev] == SNDRV_AUTO_PORT) {
            printk(KERN_ERR PFX "specify MSS port\n");
            return 0;
      }
      if (port[dev] != 0x220 && port[dev] != 0x240) {
            printk(KERN_ERR PFX "Port must be 0x220 or 0x240\n");
            return 0;
      }
      if (mss_port[dev] != 0x530 && mss_port[dev] != 0xe80) {
            printk(KERN_ERR PFX "MSS port must be 0x530 or 0xe80\n");
            return 0;
      }
      if (irq[dev] != SNDRV_AUTO_IRQ && !sc6000_irq_to_softcfg(irq[dev])) {
            printk(KERN_ERR PFX "invalid IRQ %d\n", irq[dev]);
            return 0;
      }
      if (dma[dev] != SNDRV_AUTO_DMA && !sc6000_dma_to_softcfg(dma[dev])) {
            printk(KERN_ERR PFX "invalid DMA %d\n", dma[dev]);
            return 0;
      }
      if (mpu_port[dev] != SNDRV_AUTO_PORT &&
          (mpu_port[dev] & ~0x30L) != 0x300) {
            printk(KERN_ERR PFX "invalid MPU-401 port %lx\n",
                  mpu_port[dev]);
            return 0;
      }
      if (mpu_port[dev] != SNDRV_AUTO_PORT &&
          mpu_irq[dev] != SNDRV_AUTO_IRQ && mpu_irq[dev] != 0 &&
          !sc6000_mpu_irq_to_softcfg(mpu_irq[dev])) {
            printk(KERN_ERR PFX "invalid MPU-401 IRQ %d\n", mpu_irq[dev]);
            return 0;
      }
      return 1;
}

static int __devinit snd_sc6000_probe(struct device *devptr, unsigned int dev)
{
      static int possible_irqs[] = { 5, 7, 9, 10, 11, -1 };
      static int possible_dmas[] = { 1, 3, 0, -1 };
      int err;
      int xirq = irq[dev];
      int xdma = dma[dev];
      struct snd_card *card;
      struct snd_wss *chip;
      struct snd_opl3 *opl3;
      char __iomem **vport;
      char __iomem *vmss_port;


      err = snd_card_create(index[dev], id[dev], THIS_MODULE, sizeof(vport),
                        &card);
      if (err < 0)
            return err;

      vport = card->private_data;
      if (xirq == SNDRV_AUTO_IRQ) {
            xirq = snd_legacy_find_free_irq(possible_irqs);
            if (xirq < 0) {
                  snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
                  err = -EBUSY;
                  goto err_exit;
            }
      }

      if (xdma == SNDRV_AUTO_DMA) {
            xdma = snd_legacy_find_free_dma(possible_dmas);
            if (xdma < 0) {
                  snd_printk(KERN_ERR PFX "unable to find a free DMA\n");
                  err = -EBUSY;
                  goto err_exit;
            }
      }

      if (!request_region(port[dev], 0x10, DRV_NAME)) {
            snd_printk(KERN_ERR PFX
                     "I/O port region is already in use.\n");
            err = -EBUSY;
            goto err_exit;
      }
      *vport = devm_ioport_map(devptr, port[dev], 0x10);
      if (*vport == NULL) {
            snd_printk(KERN_ERR PFX
                     "I/O port cannot be iomaped.\n");
            err = -EBUSY;
            goto err_unmap1;
      }

      /* to make it marked as used */
      if (!request_region(mss_port[dev], 4, DRV_NAME)) {
            snd_printk(KERN_ERR PFX
                     "SC-6000 port I/O port region is already in use.\n");
            err = -EBUSY;
            goto err_unmap1;
      }
      vmss_port = devm_ioport_map(devptr, mss_port[dev], 4);
      if (!vmss_port) {
            snd_printk(KERN_ERR PFX
                     "MSS port I/O cannot be iomaped.\n");
            err = -EBUSY;
            goto err_unmap2;
      }

      snd_printd("Initializing BASE[0x%lx] IRQ[%d] DMA[%d] MIRQ[%d]\n",
               port[dev], xirq, xdma,
               mpu_irq[dev] == SNDRV_AUTO_IRQ ? 0 : mpu_irq[dev]);

      err = sc6000_init_board(*vport, vmss_port, dev);
      if (err < 0)
            goto err_unmap2;

      err = snd_wss_create(card, mss_port[dev] + 4,  -1, xirq, xdma, -1,
                       WSS_HW_DETECT, 0, &chip);
      if (err < 0)
            goto err_unmap2;

      err = snd_wss_pcm(chip, 0, NULL);
      if (err < 0) {
            snd_printk(KERN_ERR PFX
                     "error creating new WSS PCM device\n");
            goto err_unmap2;
      }
      err = snd_wss_mixer(chip);
      if (err < 0) {
            snd_printk(KERN_ERR PFX "error creating new WSS mixer\n");
            goto err_unmap2;
      }
      err = snd_sc6000_mixer(chip);
      if (err < 0) {
            snd_printk(KERN_ERR PFX "the mixer rewrite failed\n");
            goto err_unmap2;
      }
      if (snd_opl3_create(card,
                      0x388, 0x388 + 2,
                      OPL3_HW_AUTO, 0, &opl3) < 0) {
            snd_printk(KERN_ERR PFX "no OPL device at 0x%x-0x%x ?\n",
                     0x388, 0x388 + 2);
      } else {
            err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
            if (err < 0)
                  goto err_unmap2;
      }

      if (mpu_port[dev] != SNDRV_AUTO_PORT) {
            if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
                  mpu_irq[dev] = -1;
            if (snd_mpu401_uart_new(card, 0,
                              MPU401_HW_MPU401,
                              mpu_port[dev], 0,
                              mpu_irq[dev], IRQF_DISABLED,
                              NULL) < 0)
                  snd_printk(KERN_ERR "no MPU-401 device at 0x%lx ?\n",
                              mpu_port[dev]);
      }

      strcpy(card->driver, DRV_NAME);
      strcpy(card->shortname, "SC-6000");
      sprintf(card->longname, "Gallant SC-6000 at 0x%lx, irq %d, dma %d",
            mss_port[dev], xirq, xdma);

      snd_card_set_dev(card, devptr);

      err = snd_card_register(card);
      if (err < 0)
            goto err_unmap2;

      dev_set_drvdata(devptr, card);
      return 0;

err_unmap2:
      sc6000_setup_board(*vport, 0);
      release_region(mss_port[dev], 4);
err_unmap1:
      release_region(port[dev], 0x10);
err_exit:
      snd_card_free(card);
      return err;
}

static int __devexit snd_sc6000_remove(struct device *devptr, unsigned int dev)
{
      struct snd_card *card = dev_get_drvdata(devptr);
      char __iomem **vport = card->private_data;

      if (sc6000_setup_board(*vport, 0) < 0)
            snd_printk(KERN_WARNING "sc6000_setup_board failed on exit!\n");

      release_region(port[dev], 0x10);
      release_region(mss_port[dev], 4);

      dev_set_drvdata(devptr, NULL);
      snd_card_free(card);
      return 0;
}

static struct isa_driver snd_sc6000_driver = {
      .match            = snd_sc6000_match,
      .probe            = snd_sc6000_probe,
      .remove           = __devexit_p(snd_sc6000_remove),
      /* FIXME: suspend/resume */
      .driver           = {
            .name = DRV_NAME,
      },
};


static int __init alsa_card_sc6000_init(void)
{
      return isa_register_driver(&snd_sc6000_driver, SNDRV_CARDS);
}

static void __exit alsa_card_sc6000_exit(void)
{
      isa_unregister_driver(&snd_sc6000_driver);
}

module_init(alsa_card_sc6000_init)
module_exit(alsa_card_sc6000_exit)

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