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cs4236.c

/*
 *  Driver for generic CS4232/CS4235/CS4236/CS4236B/CS4237B/CS4238B/CS4239 chips
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 *
 *
 *   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/init.h>
#include <linux/err.h>
#include <linux/isa.h>
#include <linux/pnp.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/wss.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>
#include <sound/initval.h>

MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Cirrus Logic CS4232-9");
MODULE_SUPPORTED_DEVICE("{{Turtle Beach,TBS-2000},"
            "{Turtle Beach,Tropez Plus},"
            "{SIC CrystalWave 32},"
            "{Hewlett Packard,Omnibook 5500},"
            "{TerraTec,Maestro 32/96},"
            "{Philips,PCA70PS}},"
            "{{Crystal Semiconductors,CS4235},"
            "{Crystal Semiconductors,CS4236},"
            "{Crystal Semiconductors,CS4237},"
            "{Crystal Semiconductors,CS4238},"
            "{Crystal Semiconductors,CS4239},"
            "{Acer,AW37},"
            "{Acer,AW35/Pro},"
            "{Crystal,3D},"
            "{Crystal Computer,TidalWave128},"
            "{Dell,Optiplex GX1},"
            "{Dell,Workstation 400 sound},"
            "{EliteGroup,P5TX-LA sound},"
            "{Gallant,SC-70P},"
            "{Gateway,E1000 Onboard CS4236B},"
            "{Genius,Sound Maker 3DJ},"
            "{Hewlett Packard,HP6330 sound},"
            "{IBM,PC 300PL sound},"
            "{IBM,Aptiva 2137 E24},"
            "{IBM,IntelliStation M Pro},"
            "{Intel,Marlin Spike Mobo CS4235},"
            "{Intel PR440FX Onboard},"
            "{Guillemot,MaxiSound 16 PnP},"
            "{NewClear,3D},"
            "{TerraTec,AudioSystem EWS64L/XL},"
            "{Typhoon Soundsystem,CS4236B},"
            "{Turtle Beach,Malibu},"
            "{Unknown,Digital PC 5000 Onboard}}");

MODULE_ALIAS("snd_cs4232");

#define IDENT "CS4232+"
#define DEV_NAME "cs4232+"

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_ISAPNP; /* Enable this card */
#ifdef CONFIG_PNP
static int isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
#endif
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;   /* PnP setup */
static long cport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;  /* PnP setup */
static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;/* PnP setup */
static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;      /* PnP setup */
static long sb_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;      /* PnP setup */
static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;      /* 5,7,9,11,12,15 */
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;  /* 9,11,12,15 */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;     /* 0,1,3,5,6,7 */
static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;     /* 0,1,3,5,6,7 */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for " IDENT " soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for " IDENT " soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable " IDENT " soundcard.");
#ifdef CONFIG_PNP
module_param_array(isapnp, bool, NULL, 0444);
MODULE_PARM_DESC(isapnp, "ISA PnP detection for specified soundcard.");
#endif
module_param_array(port, long, NULL, 0444);
MODULE_PARM_DESC(port, "Port # for " IDENT " driver.");
module_param_array(cport, long, NULL, 0444);
MODULE_PARM_DESC(cport, "Control port # for " IDENT " driver.");
module_param_array(mpu_port, long, NULL, 0444);
MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " IDENT " driver.");
module_param_array(fm_port, long, NULL, 0444);
MODULE_PARM_DESC(fm_port, "FM port # for " IDENT " driver.");
module_param_array(sb_port, long, NULL, 0444);
MODULE_PARM_DESC(sb_port, "SB port # for " IDENT " driver (optional).");
module_param_array(irq, int, NULL, 0444);
MODULE_PARM_DESC(irq, "IRQ # for " IDENT " driver.");
module_param_array(mpu_irq, int, NULL, 0444);
MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " IDENT " driver.");
module_param_array(dma1, int, NULL, 0444);
MODULE_PARM_DESC(dma1, "DMA1 # for " IDENT " driver.");
module_param_array(dma2, int, NULL, 0444);
MODULE_PARM_DESC(dma2, "DMA2 # for " IDENT " driver.");

#ifdef CONFIG_PNP
static int isa_registered;
static int pnpc_registered;
static int pnp_registered;
#endif /* CONFIG_PNP */

00126 struct snd_card_cs4236 {
      struct snd_wss *chip;
      struct resource *res_sb_port;
#ifdef CONFIG_PNP
      struct pnp_dev *wss;
      struct pnp_dev *ctrl;
      struct pnp_dev *mpu;
#endif
};

#ifdef CONFIG_PNP

/*
 * PNP BIOS
 */
static const struct pnp_device_id snd_cs423x_pnpbiosids[] = {
      { .id = "CSC0100" },
      { .id = "CSC0000" },
      /* Guillemot Turtlebeach something appears to be cs4232 compatible
       * (untested) */
      { .id = "GIM0100" },
      { .id = "" }
};
MODULE_DEVICE_TABLE(pnp, snd_cs423x_pnpbiosids);

#define CS423X_ISAPNP_DRIVER  "cs4232_isapnp"
static struct pnp_card_device_id snd_cs423x_pnpids[] = {
      /* Philips PCA70PS */
      { .id = "CSC0d32", .devs = { { "CSC0000" }, { "CSC0010" }, { "PNPb006" } } },
      /* TerraTec Maestro 32/96 (CS4232) */
      { .id = "CSC1a32", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* HP Omnibook 5500 onboard */
      { .id = "CSC4232", .devs = { { "CSC0000" }, { "CSC0002" }, { "CSC0003" } } },
      /* Unnamed CS4236 card (Made in Taiwan) */
      { .id = "CSC4236", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Turtle Beach TBS-2000 (CS4232) */
      { .id = "CSC7532", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSCb006" } } },
      /* Turtle Beach Tropez Plus (CS4232) */
      { .id = "CSC7632", .devs = { { "CSC0000" }, { "CSC0010" }, { "PNPb006" } } },
      /* SIC CrystalWave 32 (CS4232) */
      { .id = "CSCf032", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Netfinity 3000 on-board soundcard */
      { .id = "CSCe825", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC010f" } } },
      /* Intel Marlin Spike Motherboard - CS4235 */
      { .id = "CSC0225", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Intel Marlin Spike Motherboard (#2) - CS4235 */
      { .id = "CSC0225", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
      /* Unknown Intel mainboard - CS4235 */
      { .id = "CSC0225", .devs = { { "CSC0100" }, { "CSC0110" } } },
      /* Genius Sound Maker 3DJ - CS4237B */
      { .id = "CSC0437", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Digital PC 5000 Onboard - CS4236B */
      { .id = "CSC0735", .devs = { { "CSC0000" }, { "CSC0010" } } },
      /* some unknown CS4236B */
      { .id = "CSC0b35", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Intel PR440FX Onboard sound */
      { .id = "CSC0b36", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* CS4235 on mainboard without MPU */
      { .id = "CSC1425", .devs = { { "CSC0100" }, { "CSC0110" } } },
      /* Gateway E1000 Onboard CS4236B */
      { .id = "CSC1335", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* HP 6330 Onboard sound */
      { .id = "CSC1525", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
      /* Crystal Computer TidalWave128 */
      { .id = "CSC1e37", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* ACER AW37 - CS4235 */
      { .id = "CSC4236", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* build-in soundcard in EliteGroup P5TX-LA motherboard - CS4237B */
      { .id = "CSC4237", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Crystal 3D - CS4237B */
      { .id = "CSC4336", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Typhoon Soundsystem PnP - CS4236B */
      { .id = "CSC4536", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Crystal CX4235-XQ3 EP - CS4235 */
      { .id = "CSC4625", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
      /* Crystal Semiconductors CS4237B */
      { .id = "CSC4637", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* NewClear 3D - CX4237B-XQ3 */
      { .id = "CSC4837", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Dell Optiplex GX1 - CS4236B */
      { .id = "CSC6835", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Dell P410 motherboard - CS4236B */
      { .id = "CSC6835", .devs = { { "CSC0000" }, { "CSC0010" } } },
      /* Dell Workstation 400 Onboard - CS4236B */
      { .id = "CSC6836", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Turtle Beach Malibu - CS4237B */
      { .id = "CSC7537", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* CS4235 - onboard */
      { .id = "CSC8025", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
      /* IBM Aptiva 2137 E24 Onboard - CS4237B */
      { .id = "CSC8037", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* IBM IntelliStation M Pro motherboard */
      { .id = "CSCc835", .devs = { { "CSC0000" }, { "CSC0010" } } },
      /* Guillemot MaxiSound 16 PnP - CS4236B */
      { .id = "CSC9836", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Gallant SC-70P */
      { .id = "CSC9837", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* Techmakers MF-4236PW */
      { .id = "CSCa736", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* TerraTec AudioSystem EWS64XL - CS4236B */
      { .id = "CSCa836", .devs = { { "CSCa800" }, { "CSCa810" }, { "CSCa803" } } },
      /* TerraTec AudioSystem EWS64XL - CS4236B */
      { .id = "CSCa836", .devs = { { "CSCa800" }, { "CSCa810" } } },
      /* ACER AW37/Pro - CS4235 */
      { .id = "CSCd925", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* ACER AW35/Pro - CS4237B */
      { .id = "CSCd937", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* CS4235 without MPU401 */
      { .id = "CSCe825", .devs = { { "CSC0100" }, { "CSC0110" } } },
      /* Unknown SiS530 - CS4235 */
      { .id = "CSC4825", .devs = { { "CSC0100" }, { "CSC0110" } } },
      /* IBM IntelliStation M Pro 6898 11U - CS4236B */
      { .id = "CSCe835", .devs = { { "CSC0000" }, { "CSC0010" } } },
      /* IBM PC 300PL Onboard - CS4236B */
      { .id = "CSCe836", .devs = { { "CSC0000" }, { "CSC0010" } } },
      /* Some noname CS4236 based card */
      { .id = "CSCe936", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* CS4236B */
      { .id = "CSCf235", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* CS4236B */
      { .id = "CSCf238", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
      /* --- */
      { .id = "" }      /* end */
};

MODULE_DEVICE_TABLE(pnp_card, snd_cs423x_pnpids);

/* WSS initialization */
static int __devinit snd_cs423x_pnp_init_wss(int dev, struct pnp_dev *pdev)
{
      if (pnp_activate_dev(pdev) < 0) {
            printk(KERN_ERR IDENT " WSS PnP configure failed for WSS (out of resources?)\n");
            return -EBUSY;
      }
      port[dev] = pnp_port_start(pdev, 0);
      if (fm_port[dev] > 0)
            fm_port[dev] = pnp_port_start(pdev, 1);
      sb_port[dev] = pnp_port_start(pdev, 2);
      irq[dev] = pnp_irq(pdev, 0);
      dma1[dev] = pnp_dma(pdev, 0);
      dma2[dev] = pnp_dma(pdev, 1) == 4 ? -1 : (int)pnp_dma(pdev, 1);
      snd_printdd("isapnp WSS: wss port=0x%lx, fm port=0x%lx, sb port=0x%lx\n",
                  port[dev], fm_port[dev], sb_port[dev]);
      snd_printdd("isapnp WSS: irq=%i, dma1=%i, dma2=%i\n",
                  irq[dev], dma1[dev], dma2[dev]);
      return 0;
}

/* CTRL initialization */
static int __devinit snd_cs423x_pnp_init_ctrl(int dev, struct pnp_dev *pdev)
{
      if (pnp_activate_dev(pdev) < 0) {
            printk(KERN_ERR IDENT " CTRL PnP configure failed for WSS (out of resources?)\n");
            return -EBUSY;
      }
      cport[dev] = pnp_port_start(pdev, 0);
      snd_printdd("isapnp CTRL: control port=0x%lx\n", cport[dev]);
      return 0;
}

/* MPU initialization */
static int __devinit snd_cs423x_pnp_init_mpu(int dev, struct pnp_dev *pdev)
{
      if (pnp_activate_dev(pdev) < 0) {
            printk(KERN_ERR IDENT " MPU401 PnP configure failed for WSS (out of resources?)\n");
            mpu_port[dev] = SNDRV_AUTO_PORT;
            mpu_irq[dev] = SNDRV_AUTO_IRQ;
      } else {
            mpu_port[dev] = pnp_port_start(pdev, 0);
            if (mpu_irq[dev] >= 0 &&
                pnp_irq_valid(pdev, 0) && pnp_irq(pdev, 0) >= 0) {
                  mpu_irq[dev] = pnp_irq(pdev, 0);
            } else {
                  mpu_irq[dev] = -1;      /* disable interrupt */
            }
      }
      snd_printdd("isapnp MPU: port=0x%lx, irq=%i\n", mpu_port[dev], mpu_irq[dev]);
      return 0;
}

static int __devinit snd_card_cs423x_pnp(int dev, struct snd_card_cs4236 *acard,
                               struct pnp_dev *pdev,
                               struct pnp_dev *cdev)
{
      acard->wss = pdev;
      if (snd_cs423x_pnp_init_wss(dev, acard->wss) < 0)
            return -EBUSY;
      if (cdev)
            cport[dev] = pnp_port_start(cdev, 0);
      else
            cport[dev] = -1;
      return 0;
}

static int __devinit snd_card_cs423x_pnpc(int dev, struct snd_card_cs4236 *acard,
                                struct pnp_card_link *card,
                                const struct pnp_card_device_id *id)
{
      acard->wss = pnp_request_card_device(card, id->devs[0].id, NULL);
      if (acard->wss == NULL)
            return -EBUSY;
      acard->ctrl = pnp_request_card_device(card, id->devs[1].id, NULL);
      if (acard->ctrl == NULL)
            return -EBUSY;
      if (id->devs[2].id[0]) {
            acard->mpu = pnp_request_card_device(card, id->devs[2].id, NULL);
            if (acard->mpu == NULL)
                  return -EBUSY;
      }

      /* WSS initialization */
      if (snd_cs423x_pnp_init_wss(dev, acard->wss) < 0)
            return -EBUSY;

      /* CTRL initialization */
      if (acard->ctrl && cport[dev] > 0) {
            if (snd_cs423x_pnp_init_ctrl(dev, acard->ctrl) < 0)
                  return -EBUSY;
      }
      /* MPU initialization */
      if (acard->mpu && mpu_port[dev] > 0) {
            if (snd_cs423x_pnp_init_mpu(dev, acard->mpu) < 0)
                  return -EBUSY;
      }
      return 0;
}
#endif /* CONFIG_PNP */

#ifdef CONFIG_PNP
#define is_isapnp_selected(dev)           isapnp[dev]
#else
#define is_isapnp_selected(dev)           0
#endif

static void snd_card_cs4236_free(struct snd_card *card)
{
      struct snd_card_cs4236 *acard = card->private_data;

      release_and_free_resource(acard->res_sb_port);
}

static int snd_cs423x_card_new(int dev, struct snd_card **cardp)
{
      struct snd_card *card;
      int err;

      err = snd_card_create(index[dev], id[dev], THIS_MODULE,
                        sizeof(struct snd_card_cs4236), &card);
      if (err < 0)
            return err;
      card->private_free = snd_card_cs4236_free;
      *cardp = card;
      return 0;
}

static int __devinit snd_cs423x_probe(struct snd_card *card, int dev)
{
      struct snd_card_cs4236 *acard;
      struct snd_pcm *pcm;
      struct snd_wss *chip;
      struct snd_opl3 *opl3;
      int err;

      acard = card->private_data;
      if (sb_port[dev] > 0 && sb_port[dev] != SNDRV_AUTO_PORT)
            if ((acard->res_sb_port = request_region(sb_port[dev], 16, IDENT " SB")) == NULL) {
                  printk(KERN_ERR IDENT ": unable to register SB port at 0x%lx\n", sb_port[dev]);
                  return -EBUSY;
            }

      err = snd_cs4236_create(card, port[dev], cport[dev],
                       irq[dev],
                       dma1[dev], dma2[dev],
                       WSS_HW_DETECT3, 0, &chip);
      if (err < 0)
            return err;

      acard->chip = chip;
      if (chip->hardware & WSS_HW_CS4236B_MASK) {

            err = snd_cs4236_pcm(chip, 0, &pcm);
            if (err < 0)
                  return err;

            err = snd_cs4236_mixer(chip);
            if (err < 0)
                  return err;
      } else {
            err = snd_wss_pcm(chip, 0, &pcm);
            if (err < 0)
                  return err;

            err = snd_wss_mixer(chip);
            if (err < 0)
                  return err;
      }
      strcpy(card->driver, pcm->name);
      strcpy(card->shortname, pcm->name);
      sprintf(card->longname, "%s at 0x%lx, irq %i, dma %i",
            pcm->name,
            chip->port,
            irq[dev],
            dma1[dev]);
      if (dma2[dev] >= 0)
            sprintf(card->longname + strlen(card->longname), "&%d", dma2[dev]);

      err = snd_wss_timer(chip, 0, NULL);
      if (err < 0)
            return err;

      if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
            if (snd_opl3_create(card,
                            fm_port[dev], fm_port[dev] + 2,
                            OPL3_HW_OPL3_CS, 0, &opl3) < 0) {
                  printk(KERN_WARNING IDENT ": OPL3 not detected\n");
            } else {
                  if ((err = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0)
                        return err;
            }
      }

      if (mpu_port[dev] > 0 && 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_CS4232,
                              mpu_port[dev], 0,
                              mpu_irq[dev],
                              mpu_irq[dev] >= 0 ? IRQF_DISABLED : 0, NULL) < 0)
                  printk(KERN_WARNING IDENT ": MPU401 not detected\n");
      }

      return snd_card_register(card);
}

static int __devinit snd_cs423x_isa_match(struct device *pdev,
                                unsigned int dev)
{
      if (!enable[dev] || is_isapnp_selected(dev))
            return 0;

      if (port[dev] == SNDRV_AUTO_PORT) {
            dev_err(pdev, "please specify port\n");
            return 0;
      }
      if (cport[dev] == SNDRV_AUTO_PORT) {
            dev_err(pdev, "please specify cport\n");
            return 0;
      }
      if (irq[dev] == SNDRV_AUTO_IRQ) {
            dev_err(pdev, "please specify irq\n");
            return 0;
      }
      if (dma1[dev] == SNDRV_AUTO_DMA) {
            dev_err(pdev, "please specify dma1\n");
            return 0;
      }
      return 1;
}

static int __devinit snd_cs423x_isa_probe(struct device *pdev,
                                unsigned int dev)
{
      struct snd_card *card;
      int err;

      err = snd_cs423x_card_new(dev, &card);
      if (err < 0)
            return err;
      snd_card_set_dev(card, pdev);
      if ((err = snd_cs423x_probe(card, dev)) < 0) {
            snd_card_free(card);
            return err;
      }

      dev_set_drvdata(pdev, card);
      return 0;
}

static int __devexit snd_cs423x_isa_remove(struct device *pdev,
                                 unsigned int dev)
{
      snd_card_free(dev_get_drvdata(pdev));
      dev_set_drvdata(pdev, NULL);
      return 0;
}

#ifdef CONFIG_PM
static int snd_cs423x_suspend(struct snd_card *card)
{
      struct snd_card_cs4236 *acard = card->private_data;
      snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
      acard->chip->suspend(acard->chip);
      return 0;
}

static int snd_cs423x_resume(struct snd_card *card)
{
      struct snd_card_cs4236 *acard = card->private_data;
      acard->chip->resume(acard->chip);
      snd_power_change_state(card, SNDRV_CTL_POWER_D0);
      return 0;
}

static int snd_cs423x_isa_suspend(struct device *dev, unsigned int n,
                          pm_message_t state)
{
      return snd_cs423x_suspend(dev_get_drvdata(dev));
}

static int snd_cs423x_isa_resume(struct device *dev, unsigned int n)
{
      return snd_cs423x_resume(dev_get_drvdata(dev));
}
#endif

static struct isa_driver cs423x_isa_driver = {
      .match            = snd_cs423x_isa_match,
      .probe            = snd_cs423x_isa_probe,
      .remove           = __devexit_p(snd_cs423x_isa_remove),
#ifdef CONFIG_PM
      .suspend    = snd_cs423x_isa_suspend,
      .resume           = snd_cs423x_isa_resume,
#endif
      .driver           = {
            .name = DEV_NAME
      },
};


#ifdef CONFIG_PNP
static int __devinit snd_cs423x_pnpbios_detect(struct pnp_dev *pdev,
                                     const struct pnp_device_id *id)
{
      static int dev;
      int err;
      struct snd_card *card;
      struct pnp_dev *cdev;
      char cid[PNP_ID_LEN];

      if (pnp_device_is_isapnp(pdev))
            return -ENOENT;   /* we have another procedure - card */
      for (; dev < SNDRV_CARDS; dev++) {
            if (enable[dev] && isapnp[dev])
                  break;
      }
      if (dev >= SNDRV_CARDS)
            return -ENODEV;

      /* prepare second id */
      strcpy(cid, pdev->id[0].id);
      cid[5] = '1';
      cdev = NULL;
      list_for_each_entry(cdev, &(pdev->protocol->devices), protocol_list) {
            if (!strcmp(cdev->id[0].id, cid))
                  break;
      }
      err = snd_cs423x_card_new(dev, &card);
      if (err < 0)
            return err;
      err = snd_card_cs423x_pnp(dev, card->private_data, pdev, cdev);
      if (err < 0) {
            printk(KERN_ERR "PnP BIOS detection failed for " IDENT "\n");
            snd_card_free(card);
            return err;
      }
      snd_card_set_dev(card, &pdev->dev);
      if ((err = snd_cs423x_probe(card, dev)) < 0) {
            snd_card_free(card);
            return err;
      }
      pnp_set_drvdata(pdev, card);
      dev++;
      return 0;
}

static void __devexit snd_cs423x_pnp_remove(struct pnp_dev *pdev)
{
      snd_card_free(pnp_get_drvdata(pdev));
      pnp_set_drvdata(pdev, NULL);
}

#ifdef CONFIG_PM
static int snd_cs423x_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
{
      return snd_cs423x_suspend(pnp_get_drvdata(pdev));
}

static int snd_cs423x_pnp_resume(struct pnp_dev *pdev)
{
      return snd_cs423x_resume(pnp_get_drvdata(pdev));
}
#endif

static struct pnp_driver cs423x_pnp_driver = {
      .name = "cs423x-pnpbios",
      .id_table = snd_cs423x_pnpbiosids,
      .probe = snd_cs423x_pnpbios_detect,
      .remove = __devexit_p(snd_cs423x_pnp_remove),
#ifdef CONFIG_PM
      .suspend    = snd_cs423x_pnp_suspend,
      .resume           = snd_cs423x_pnp_resume,
#endif
};

static int __devinit snd_cs423x_pnpc_detect(struct pnp_card_link *pcard,
                                  const struct pnp_card_device_id *pid)
{
      static int dev;
      struct snd_card *card;
      int res;

      for ( ; dev < SNDRV_CARDS; dev++) {
            if (enable[dev] && isapnp[dev])
                  break;
      }
      if (dev >= SNDRV_CARDS)
            return -ENODEV;

      res = snd_cs423x_card_new(dev, &card);
      if (res < 0)
            return res;
      if ((res = snd_card_cs423x_pnpc(dev, card->private_data, pcard, pid)) < 0) {
            printk(KERN_ERR "isapnp detection failed and probing for " IDENT
                   " is not supported\n");
            snd_card_free(card);
            return res;
      }
      snd_card_set_dev(card, &pcard->card->dev);
      if ((res = snd_cs423x_probe(card, dev)) < 0) {
            snd_card_free(card);
            return res;
      }
      pnp_set_card_drvdata(pcard, card);
      dev++;
      return 0;
}

static void __devexit snd_cs423x_pnpc_remove(struct pnp_card_link * pcard)
{
      snd_card_free(pnp_get_card_drvdata(pcard));
      pnp_set_card_drvdata(pcard, NULL);
}

#ifdef CONFIG_PM
static int snd_cs423x_pnpc_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
      return snd_cs423x_suspend(pnp_get_card_drvdata(pcard));
}

static int snd_cs423x_pnpc_resume(struct pnp_card_link *pcard)
{
      return snd_cs423x_resume(pnp_get_card_drvdata(pcard));
}
#endif

static struct pnp_card_driver cs423x_pnpc_driver = {
      .flags = PNP_DRIVER_RES_DISABLE,
      .name = CS423X_ISAPNP_DRIVER,
      .id_table = snd_cs423x_pnpids,
      .probe = snd_cs423x_pnpc_detect,
      .remove = __devexit_p(snd_cs423x_pnpc_remove),
#ifdef CONFIG_PM
      .suspend    = snd_cs423x_pnpc_suspend,
      .resume           = snd_cs423x_pnpc_resume,
#endif
};
#endif /* CONFIG_PNP */

static int __init alsa_card_cs423x_init(void)
{
      int err;

      err = isa_register_driver(&cs423x_isa_driver, SNDRV_CARDS);
#ifdef CONFIG_PNP
      if (!err)
            isa_registered = 1;
      err = pnp_register_driver(&cs423x_pnp_driver);
      if (!err)
            pnp_registered = 1;
      err = pnp_register_card_driver(&cs423x_pnpc_driver);
      if (!err)
            pnpc_registered = 1;
      if (pnp_registered)
            err = 0;
      if (isa_registered)
            err = 0;
#endif
      return err;
}

static void __exit alsa_card_cs423x_exit(void)
{
#ifdef CONFIG_PNP
      if (pnpc_registered)
            pnp_unregister_card_driver(&cs423x_pnpc_driver);
      if (pnp_registered)
            pnp_unregister_driver(&cs423x_pnp_driver);
      if (isa_registered)
#endif
            isa_unregister_driver(&cs423x_isa_driver);
}

module_init(alsa_card_cs423x_init)
module_exit(alsa_card_cs423x_exit)

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