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vxpocket.c

/*
 * Driver for Digigram VXpocket V2/440 soundcards
 *
 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
 *
 *   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/moduleparam.h>
#include <sound/core.h>
#include "vxpocket.h"
#include <pcmcia/ciscode.h>
#include <pcmcia/cisreg.h>
#include <sound/initval.h>
#include <sound/tlv.h>

/*
 */

MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("Digigram VXPocket");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Digigram,VXPocket},{Digigram,VXPocket440}}");

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_PNP;  /* Enable switches */
static int ibl[SNDRV_CARDS];

module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for VXPocket soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for VXPocket soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable VXPocket soundcard.");
module_param_array(ibl, int, NULL, 0444);
MODULE_PARM_DESC(ibl, "Capture IBL size for VXPocket soundcard.");
 

/*
 */

static unsigned int card_alloc;


/*
 */
static void vxpocket_release(struct pcmcia_device *link)
{
      pcmcia_disable_device(link);
}

/*
 * destructor, called from snd_card_free_when_closed()
 */
static int snd_vxpocket_dev_free(struct snd_device *device)
{
      struct vx_core *chip = device->device_data;

      snd_vx_free_firmware(chip);
      kfree(chip);
      return 0;
}


/*
 * Hardware information
 */

/* VX-pocket V2
 *
 * 1 DSP, 1 sync UER
 * 1 programmable clock (NIY)
 * 1 stereo analog input (line/micro)
 * 1 stereo analog output
 * Only output levels can be modified
 */

static const DECLARE_TLV_DB_SCALE(db_scale_old_vol, -11350, 50, 0);

static struct snd_vx_hardware vxpocket_hw = {
      .name = "VXPocket",
      .type = VX_TYPE_VXPOCKET,

      /* hardware specs */
      .num_codecs = 1,
      .num_ins = 1,
      .num_outs = 1,
      .output_level_max = VX_ANALOG_OUT_LEVEL_MAX,
      .output_level_db_scale = db_scale_old_vol,
};    

/* VX-pocket 440
 *
 * 1 DSP, 1 sync UER, 1 sync World Clock (NIY)
 * SMPTE (NIY)
 * 2 stereo analog input (line/micro)
 * 2 stereo analog output
 * Only output levels can be modified
 * UER, but only for the first two inputs and outputs.
 */

static struct snd_vx_hardware vxp440_hw = {
      .name = "VXPocket440",
      .type = VX_TYPE_VXP440,

      /* hardware specs */
      .num_codecs = 2,
      .num_ins = 2,
      .num_outs = 2,
      .output_level_max = VX_ANALOG_OUT_LEVEL_MAX,
      .output_level_db_scale = db_scale_old_vol,
};    


/*
 * create vxpocket instance
 */
static struct snd_vxpocket *snd_vxpocket_new(struct snd_card *card, int ibl,
                                   struct pcmcia_device *link)
{
      struct vx_core *chip;
      struct snd_vxpocket *vxp;
      static struct snd_device_ops ops = {
            .dev_free = snd_vxpocket_dev_free,
      };

      chip = snd_vx_create(card, &vxpocket_hw, &snd_vxpocket_ops,
                       sizeof(struct snd_vxpocket) - sizeof(struct vx_core));
      if (! chip)
            return NULL;

      if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops) < 0) {
            kfree(chip);
            return NULL;
      }
      chip->ibl.size = ibl;

      vxp = (struct snd_vxpocket *)chip;

      vxp->p_dev = link;
      link->priv = chip;

      link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;
      link->io.NumPorts1 = 16;

      link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT;

      link->irq.IRQInfo1 = IRQ_LEVEL_ID;
      link->irq.Handler = &snd_vx_irq_handler;
      link->irq.Instance = chip;

      link->conf.Attributes = CONF_ENABLE_IRQ;
      link->conf.IntType = INT_MEMORY_AND_IO;
      link->conf.ConfigIndex = 1;
      link->conf.Present = PRESENT_OPTION;

      return vxp;
}


/**
 * snd_vxpocket_assign_resources - initialize the hardware and card instance.
 * @port: i/o port for the card
 * @irq: irq number for the card
 *
 * this function assigns the specified port and irq, boot the card,
 * create pcm and control instances, and initialize the rest hardware.
 *
 * returns 0 if successful, or a negative error code.
 */
static int snd_vxpocket_assign_resources(struct vx_core *chip, int port, int irq)
{
      int err;
      struct snd_card *card = chip->card;
      struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;

      snd_printdd(KERN_DEBUG "vxpocket assign resources: port = 0x%x, irq = %d\n", port, irq);
      vxp->port = port;

      sprintf(card->shortname, "Digigram %s", card->driver);
      sprintf(card->longname, "%s at 0x%x, irq %i",
            card->shortname, port, irq);

      chip->irq = irq;

      if ((err = snd_vx_setup_firmware(chip)) < 0)
            return err;

      return 0;
}


/*
 * configuration callback
 */

#define CS_CHECK(fn, ret) \
do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

static int vxpocket_config(struct pcmcia_device *link)
{
      struct vx_core *chip = link->priv;
      struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;
      int last_fn, last_ret;

      snd_printdd(KERN_DEBUG "vxpocket_config called\n");

      /* redefine hardware record according to the VERSION1 string */
      if (!strcmp(link->prod_id[1], "VX-POCKET")) {
            snd_printdd("VX-pocket is detected\n");
      } else {
            snd_printdd("VX-pocket 440 is detected\n");
            /* overwrite the hardware information */
            chip->hw = &vxp440_hw;
            chip->type = vxp440_hw.type;
            strcpy(chip->card->driver, vxp440_hw.name);
      }

      CS_CHECK(RequestIO, pcmcia_request_io(link, &link->io));
      CS_CHECK(RequestIRQ, pcmcia_request_irq(link, &link->irq));
      CS_CHECK(RequestConfiguration, pcmcia_request_configuration(link, &link->conf));

      chip->dev = &handle_to_dev(link);
      snd_card_set_dev(chip->card, chip->dev);

      if (snd_vxpocket_assign_resources(chip, link->io.BasePort1, link->irq.AssignedIRQ) < 0)
            goto failed;

      link->dev_node = &vxp->node;
      return 0;

cs_failed:
      cs_error(link, last_fn, last_ret);
failed:
      pcmcia_disable_device(link);
      return -ENODEV;
}

#ifdef CONFIG_PM

static int vxp_suspend(struct pcmcia_device *link)
{
      struct vx_core *chip = link->priv;

      snd_printdd(KERN_DEBUG "SUSPEND\n");
      if (chip) {
            snd_printdd(KERN_DEBUG "snd_vx_suspend calling\n");
            snd_vx_suspend(chip, PMSG_SUSPEND);
      }

      return 0;
}

static int vxp_resume(struct pcmcia_device *link)
{
      struct vx_core *chip = link->priv;

      snd_printdd(KERN_DEBUG "RESUME\n");
      if (pcmcia_dev_present(link)) {
            //struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;
            if (chip) {
                  snd_printdd(KERN_DEBUG "calling snd_vx_resume\n");
                  snd_vx_resume(chip);
            }
      }
      snd_printdd(KERN_DEBUG "resume done!\n");

      return 0;
}

#endif


/*
 */
static int vxpocket_probe(struct pcmcia_device *p_dev)
{
      struct snd_card *card;
      struct snd_vxpocket *vxp;
      int i;

      /* find an empty slot from the card list */
      for (i = 0; i < SNDRV_CARDS; i++) {
            if (!(card_alloc & (1 << i)))
                  break;
      }
      if (i >= SNDRV_CARDS) {
            snd_printk(KERN_ERR "vxpocket: too many cards found\n");
            return -EINVAL;
      }
      if (! enable[i])
            return -ENODEV; /* disabled explicitly */

      /* ok, create a card instance */
      card = snd_card_new(index[i], id[i], THIS_MODULE, 0);
      if (card == NULL) {
            snd_printk(KERN_ERR "vxpocket: cannot create a card instance\n");
            return -ENOMEM;
      }

      vxp = snd_vxpocket_new(card, ibl[i], p_dev);
      if (! vxp) {
            snd_card_free(card);
            return -ENODEV;
      }
      card->private_data = vxp;

      vxp->index = i;
      card_alloc |= 1 << i;

      vxp->p_dev = p_dev;

      return vxpocket_config(p_dev);
}

static void vxpocket_detach(struct pcmcia_device *link)
{
      struct snd_vxpocket *vxp;
      struct vx_core *chip;

      if (! link)
            return;

      vxp = link->priv;
      chip = (struct vx_core *)vxp;
      card_alloc &= ~(1 << vxp->index);

      chip->chip_status |= VX_STAT_IS_STALE; /* to be sure */
      snd_card_disconnect(chip->card);
      vxpocket_release(link);
      snd_card_free_when_closed(chip->card);
}

/*
 * Module entry points
 */

static struct pcmcia_device_id vxp_ids[] = {
      PCMCIA_DEVICE_MANF_CARD(0x01f1, 0x0100),
      PCMCIA_DEVICE_NULL
};
MODULE_DEVICE_TABLE(pcmcia, vxp_ids);

static struct pcmcia_driver vxp_cs_driver = {
      .owner            = THIS_MODULE,
      .drv        = {
            .name = "snd-vxpocket",
      },
      .probe            = vxpocket_probe,
      .remove           = vxpocket_detach,
      .id_table   = vxp_ids,
#ifdef CONFIG_PM
      .suspend    = vxp_suspend,
      .resume           = vxp_resume,
#endif
};

static int __init init_vxpocket(void)
{
      return pcmcia_register_driver(&vxp_cs_driver);
}

static void __exit exit_vxpocket(void)
{
      pcmcia_unregister_driver(&vxp_cs_driver);
}

module_init(init_vxpocket);
module_exit(exit_vxpocket);

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