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azt2320.c

/*
    card-azt2320.c - driver for Aztech Systems AZT2320 based soundcards.
    Copyright (C) 1999-2000 by Massimo Piccioni <dafastidio@libero.it>

    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
*/

/*
    This driver should provide support for most Aztech AZT2320 based cards.
    Several AZT2316 chips are also supported/tested, but autoprobe doesn't
    work: all module option have to be set.

    No docs available for us at Aztech headquarters !!!   Unbelievable ...
    No other help obtained.

    Thanks to Rainer Wiesner <rainer.wiesner@01019freenet.de> for the WSS
    activation method (full-duplex audio!).
*/

#include <asm/io.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/time.h>
#include <linux/wait.h>
#include <linux/pnp.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/cs4231.h>
#include <sound/mpu401.h>
#include <sound/opl3.h>

#define PFX "azt2320: "

MODULE_AUTHOR("Massimo Piccioni <dafastidio@libero.it>");
MODULE_DESCRIPTION("Aztech Systems AZT2320");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Aztech Systems,PRO16V},"
            "{Aztech Systems,AZT2320},"
            "{Aztech Systems,AZT3300},"
            "{Aztech Systems,AZT2320},"
            "{Aztech Systems,AZT3000}}");

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 */
static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;   /* PnP setup */
static long wss_port[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 int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;      /* Pnp setup */
static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;  /* Pnp setup */
static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;     /* PnP setup */
static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;     /* PnP setup */

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for azt2320 based soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for azt2320 based soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable azt2320 based soundcard.");

struct snd_card_azt2320 {
      int dev_no;
      struct pnp_dev *dev;
      struct pnp_dev *devmpu;
      struct snd_cs4231 *chip;
};

static struct pnp_card_device_id snd_azt2320_pnpids[] = {
      /* PRO16V */
      { .id = "AZT1008", .devs = { { "AZT1008" }, { "AZT2001" }, } },
      /* Aztech Sound Galaxy 16 */
      { .id = "AZT2320", .devs = { { "AZT0001" }, { "AZT0002" }, } },
      /* Packard Bell Sound III 336 AM/SP */
      { .id = "AZT3000", .devs = { { "AZT1003" }, { "AZT2001" }, } },
      /* AT3300 */
      { .id = "AZT3002", .devs = { { "AZT1004" }, { "AZT2001" }, } },
      /* --- */
      { .id = "AZT3005", .devs = { { "AZT1003" }, { "AZT2001" }, } },
      /* --- */
      { .id = "AZT3011", .devs = { { "AZT1003" }, { "AZT2001" }, } },
      { .id = "" }      /* end */
};

MODULE_DEVICE_TABLE(pnp_card, snd_azt2320_pnpids);

#define     DRIVER_NAME "snd-card-azt2320"

static int __devinit snd_card_azt2320_pnp(int dev, struct snd_card_azt2320 *acard,
                                struct pnp_card_link *card,
                                const struct pnp_card_device_id *id)
{
      struct pnp_dev *pdev;
      int err;

      acard->dev = pnp_request_card_device(card, id->devs[0].id, NULL);
      if (acard->dev == NULL)
            return -ENODEV;

      acard->devmpu = pnp_request_card_device(card, id->devs[1].id, NULL);

      pdev = acard->dev;

      err = pnp_activate_dev(pdev);
      if (err < 0) {
            snd_printk(KERN_ERR PFX "AUDIO pnp configure failure\n");
            return err;
      }
      port[dev] = pnp_port_start(pdev, 0);
      fm_port[dev] = pnp_port_start(pdev, 1);
      wss_port[dev] = pnp_port_start(pdev, 2);
      dma1[dev] = pnp_dma(pdev, 0);
      dma2[dev] = pnp_dma(pdev, 1);
      irq[dev] = pnp_irq(pdev, 0);

      pdev = acard->devmpu;
      if (pdev != NULL) {
            err = pnp_activate_dev(pdev);
            if (err < 0)
                  goto __mpu_error;
            mpu_port[dev] = pnp_port_start(pdev, 0);
            mpu_irq[dev] = pnp_irq(pdev, 0);
      } else {
           __mpu_error:
            if (pdev) {
                  pnp_release_card_device(pdev);
                  snd_printk(KERN_ERR PFX "MPU401 pnp configure failure, skipping\n");
            }
            acard->devmpu = NULL;
            mpu_port[dev] = -1;
      }

      return 0;
}

/* same of snd_sbdsp_command by Jaroslav Kysela */
static int __devinit snd_card_azt2320_command(unsigned long port, unsigned char val)
{
      int i;
      unsigned long limit;

      limit = jiffies + HZ / 10;
      for (i = 50000; i && time_after(limit, jiffies); i--)
            if (!(inb(port + 0x0c) & 0x80)) {
                  outb(val, port + 0x0c);
                  return 0;
            }
      return -EBUSY;
}

static int __devinit snd_card_azt2320_enable_wss(unsigned long port)
{
      int error;

      if ((error = snd_card_azt2320_command(port, 0x09)))
            return error;
      if ((error = snd_card_azt2320_command(port, 0x00)))
            return error;

      mdelay(5);
      return 0;
}

static int __devinit snd_card_azt2320_probe(int dev,
                                  struct pnp_card_link *pcard,
                                  const struct pnp_card_device_id *pid)
{
      int error;
      struct snd_card *card;
      struct snd_card_azt2320 *acard;
      struct snd_cs4231 *chip;
      struct snd_opl3 *opl3;

      if ((card = snd_card_new(index[dev], id[dev], THIS_MODULE,
                         sizeof(struct snd_card_azt2320))) == NULL)
            return -ENOMEM;
      acard = (struct snd_card_azt2320 *)card->private_data;

      if ((error = snd_card_azt2320_pnp(dev, acard, pcard, pid))) {
            snd_card_free(card);
            return error;
      }
      snd_card_set_dev(card, &pcard->card->dev);

      if ((error = snd_card_azt2320_enable_wss(port[dev]))) {
            snd_card_free(card);
            return error;
      }

      if ((error = snd_cs4231_create(card, wss_port[dev], -1,
                               irq[dev],
                               dma1[dev],
                               dma2[dev],
                               CS4231_HW_DETECT, 0, &chip)) < 0) {
            snd_card_free(card);
            return error;
      }

      strcpy(card->driver, "AZT2320");
      strcpy(card->shortname, "Aztech AZT2320");
      sprintf(card->longname, "%s, WSS at 0x%lx, irq %i, dma %i&%i",
            card->shortname, chip->port, irq[dev], dma1[dev], dma2[dev]);

      if ((error = snd_cs4231_pcm(chip, 0, NULL)) < 0) {
            snd_card_free(card);
            return error;
      }
      if ((error = snd_cs4231_mixer(chip)) < 0) {
            snd_card_free(card);
            return error;
      }
      if ((error = snd_cs4231_timer(chip, 0, NULL)) < 0) {
            snd_card_free(card);
            return error;
      }

      if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
            if (snd_mpu401_uart_new(card, 0, MPU401_HW_AZT2320,
                        mpu_port[dev], 0,
                        mpu_irq[dev], IRQF_DISABLED,
                        NULL) < 0)
                  snd_printk(KERN_ERR PFX "no MPU-401 device at 0x%lx\n", mpu_port[dev]);
      }

      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_AUTO, 0, &opl3) < 0) {
                  snd_printk(KERN_ERR PFX "no OPL device at 0x%lx-0x%lx\n",
                           fm_port[dev], fm_port[dev] + 2);
            } else {
                  if ((error = snd_opl3_timer_new(opl3, 1, 2)) < 0) {
                        snd_card_free(card);
                        return error;
                  }
                  if ((error = snd_opl3_hwdep_new(opl3, 0, 1, NULL)) < 0) {
                        snd_card_free(card);
                        return error;
                  }
            }
      }

      if ((error = snd_card_register(card)) < 0) {
            snd_card_free(card);
            return error;
      }
      pnp_set_card_drvdata(pcard, card);
      return 0;
}

static unsigned int __devinitdata azt2320_devices;

static int __devinit snd_azt2320_pnp_detect(struct pnp_card_link *card,
                                  const struct pnp_card_device_id *id)
{
      static int dev;
      int res;

      for ( ; dev < SNDRV_CARDS; dev++) {
            if (!enable[dev])
                  continue;
            res = snd_card_azt2320_probe(dev, card, id);
            if (res < 0)
                  return res;
            dev++;
            azt2320_devices++;
            return 0;
      }
        return -ENODEV;
}

static void __devexit snd_azt2320_pnp_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_azt2320_pnp_suspend(struct pnp_card_link *pcard, pm_message_t state)
{
      struct snd_card *card = pnp_get_card_drvdata(pcard);
      struct snd_card_azt2320 *acard = card->private_data;
      struct snd_cs4231 *chip = acard->chip;

      snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
      chip->suspend(chip);
      return 0;
}

static int snd_azt2320_pnp_resume(struct pnp_card_link *pcard)
{
      struct snd_card *card = pnp_get_card_drvdata(pcard);
      struct snd_card_azt2320 *acard = card->private_data;
      struct snd_cs4231 *chip = acard->chip;

      chip->resume(chip);
      snd_power_change_state(card, SNDRV_CTL_POWER_D0);
      return 0;
}
#endif

static struct pnp_card_driver azt2320_pnpc_driver = {
      .flags          = PNP_DRIVER_RES_DISABLE,
      .name           = "azt2320",
      .id_table       = snd_azt2320_pnpids,
      .probe          = snd_azt2320_pnp_detect,
      .remove         = __devexit_p(snd_azt2320_pnp_remove),
#ifdef CONFIG_PM
      .suspend    = snd_azt2320_pnp_suspend,
      .resume           = snd_azt2320_pnp_resume,
#endif
};

static int __init alsa_card_azt2320_init(void)
{
      int err;

      err = pnp_register_card_driver(&azt2320_pnpc_driver);
      if (err)
            return err;

      if (!azt2320_devices) {
            pnp_unregister_card_driver(&azt2320_pnpc_driver);
#ifdef MODULE
            snd_printk(KERN_ERR "no AZT2320 based soundcards found\n");
#endif
            return -ENODEV;
      }
      return 0;
}

static void __exit alsa_card_azt2320_exit(void)
{
      pnp_unregister_card_driver(&azt2320_pnpc_driver);
}

module_init(alsa_card_azt2320_init)
module_exit(alsa_card_azt2320_exit)

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