/*
   * 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/module.h>

  #include <linux/slab.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 bool 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 int snd_vxpocket_new(struct snd_card *card, int ibl,
  			    struct pcmcia_device *link,
  			    struct snd_vxpocket **chip_ret)

  {

  	struct vx_core *chip;

  	struct snd_vxpocket *vxp;

  	static struct snd_device_ops ops = {

  		.dev_free =	snd_vxpocket_dev_free,
  	};

  	int err;

  
  	chip = snd_vx_create(card, &vxpocket_hw, &snd_vxpocket_ops,

  			     sizeof(struct snd_vxpocket) - sizeof(struct vx_core));

  	if (!chip)
  		return -ENOMEM;

  	err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
  	if (err < 0) {

  		kfree(chip);

  		return err;

  	}
  	chip->ibl.size = ibl;
  
  	vxp = (struct snd_vxpocket *)chip;

  	vxp->p_dev = link;

  	link->priv = chip;

  	link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
  	link->resource[0]->end = 16;

  	link->config_flags |= CONF_ENABLE_IRQ;

  	link->config_index = 1;
  	link->config_regs = PRESENT_OPTION;

  	*chip_ret = vxp;
  	return 0;

  }
  
  
  /**
   * 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
  ", 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
   */

  static int vxpocket_config(struct pcmcia_device *link)

  {

  	struct vx_core *chip = link->priv;

  	int ret;

  
  	snd_printdd(KERN_DEBUG "vxpocket_config called
  ");

  
  	/* redefine hardware record according to the VERSION1 string */

  	if (!strcmp(link->prod_id[1], "VX-POCKET")) {

  		snd_printdd("VX-pocket is detected
  ");
  	} else {
  		snd_printdd("VX-pocket 440 is detected
  ");
  		/* overwrite the hardware information */
  		chip->hw = &vxp440_hw;
  		chip->type = vxp440_hw.type;
  		strcpy(chip->card->driver, vxp440_hw.name);
  	}

  	ret = pcmcia_request_io(link);

  	if (ret)
  		goto failed;

  	ret = pcmcia_request_irq(link, snd_vx_irq_handler);

  	if (ret)
  		goto failed;

  	ret = pcmcia_enable_device(link);

  	if (ret)
  		goto failed;

  	chip->dev = &link->dev;

  	snd_card_set_dev(chip->card, chip->dev);

  	if (snd_vxpocket_assign_resources(chip, link->resource[0]->start,
  						link->irq) < 0)

  		goto failed;

  	return 0;

  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
  ");

  	if (chip) {
  		snd_printdd(KERN_DEBUG "snd_vx_suspend calling
  ");
  		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
  ");

  	if (pcmcia_dev_present(link)) {

  		//struct snd_vxpocket *vxp = (struct snd_vxpocket *)chip;

  		if (chip) {

  			snd_printdd(KERN_DEBUG "calling snd_vx_resume
  ");
  			snd_vx_resume(chip);

  		}

  	}

  	snd_printdd(KERN_DEBUG "resume done!
  ");

  	return 0;
  }

  #endif

  
  /*
   */

  static int vxpocket_probe(struct pcmcia_device *p_dev)

  {

  	struct snd_card *card;

  	struct snd_vxpocket *vxp;

  	int i, err;

  
  	/* 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
  ");

  		return -EINVAL;

  	}
  	if (! enable[i])

  		return -ENODEV; /* disabled explicitly */

  
  	/* ok, create a card instance */

  	err = snd_card_create(index[i], id[i], THIS_MODULE, 0, &card);
  	if (err < 0) {

  		snd_printk(KERN_ERR "vxpocket: cannot create a card instance
  ");

  		return err;

  	}

  	err = snd_vxpocket_new(card, ibl[i], p_dev, &vxp);
  	if (err < 0) {

  		snd_card_free(card);

  		return err;

  	}

  	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 const 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,

  	.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);