vxpocket.c

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/*
 * Driver for Digigram VXpocket V2/440 soundcards
 *
 * Copyright (c) 2002 by Takashi Iwai <[email protected]>

 *   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 <[email protected]>");
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;
}


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
 */

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

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

    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, 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\n");
        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\n");
        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);