Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/*

 * Driver for Sound Core PDAudioCF soundcard

 *

 * Copyright (c) 2003 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 <sound/driver.h>

#include <sound/core.h>

#include <linux/slab.h>

#include <linux/moduleparam.h>

#include <pcmcia/ciscode.h>

#include <pcmcia/cisreg.h>

#include "pdaudiocf.h"

#include <sound/initval.h>

#include <linux/init.h>

/*

 */

#define CARD_NAME       "PDAudio-CF"

MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");

MODULE_DESCRIPTION("Sound Core " CARD_NAME);

MODULE_LICENSE("GPL");

MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");

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 */

module_param_array(index, int, NULL, 0444);

MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");

module_param_array(id, charp, NULL, 0444);

MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");

module_param_array(enable, bool, NULL, 0444);

MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");

/*

 */

static struct snd_card *card_list[SNDRV_CARDS];

/*

 * prototypes

 */

static int pdacf_config(struct pcmcia_device *link);

static void snd_pdacf_detach(struct pcmcia_device *p_dev);

static void pdacf_release(struct pcmcia_device *link)

{

        pcmcia_disable_device(link);

}

/*

 * destructor

 */

static int snd_pdacf_free(struct snd_pdacf *pdacf)

{

        struct pcmcia_device *link = pdacf->p_dev;

        pdacf_release(link);

        card_list[pdacf->index] = NULL;

        pdacf->card = NULL;

        kfree(pdacf);

        return 0;

}

static int snd_pdacf_dev_free(struct snd_device *device)

{

        struct snd_pdacf *chip = device->device_data;

        return snd_pdacf_free(chip);

}

/*

 * snd_pdacf_attach - attach callback for cs

 */

static int snd_pdacf_probe(struct pcmcia_device *link)

{

        int i;

        struct snd_pdacf *pdacf;

        struct snd_card *card;

        static struct snd_device_ops ops = {

                .dev_free =     snd_pdacf_dev_free,

        };

        snd_printdd(KERN_DEBUG "pdacf_attach called\n");

        /* find an empty slot from the card list */

        for (i = 0; i < SNDRV_CARDS; i++) {

                if (! card_list[i])

                        break;

        }

        if (i >= SNDRV_CARDS) {

                snd_printk(KERN_ERR "pdacf: 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 "pdacf: cannot create a card instance\n");

                return -ENOMEM;

        }

        pdacf = snd_pdacf_create(card);

        if (! pdacf)

                return -EIO;

        if (snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops) < 0) {

                kfree(pdacf);

                snd_card_free(card);

                return -ENODEV;

        }

        pdacf->index = i;

        card_list[i] = card;

        pdacf->p_dev = link;

        link->priv = pdacf;

        link->io.Attributes1 = IO_DATA_PATH_WIDTH_AUTO;

        link->io.NumPorts1 = 16;

        link->irq.Attributes = IRQ_TYPE_EXCLUSIVE | IRQ_HANDLE_PRESENT | IRQ_FORCED_PULSE;

        // link->irq.Attributes = IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED;

        link->irq.IRQInfo1 = 0 /* | IRQ_LEVEL_ID */;

        link->irq.Handler = pdacf_interrupt;

        link->irq.Instance = pdacf;

        link->conf.Attributes = CONF_ENABLE_IRQ;

        link->conf.IntType = INT_MEMORY_AND_IO;

        link->conf.ConfigIndex = 1;

        link->conf.Present = PRESENT_OPTION;

        return pdacf_config(link);

}

/**

 * snd_pdacf_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_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)

{

        int err;

        struct snd_card *card = pdacf->card;

        snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);

        pdacf->port = port;

        pdacf->irq = irq;

        pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;

        err = snd_pdacf_ak4117_create(pdacf);

        if (err < 0)

                return err;

        strcpy(card->driver, "PDAudio-CF");

        sprintf(card->shortname, "Core Sound %s", card->driver);

        sprintf(card->longname, "%s at 0x%x, irq %i",

                card->shortname, port, irq);

        err = snd_pdacf_pcm_new(pdacf);

        if (err < 0)

                return err;

        if ((err = snd_card_register(card)) < 0)

                return err;

        return 0;

}

/*

 * snd_pdacf_detach - detach callback for cs

 */

static void snd_pdacf_detach(struct pcmcia_device *link)

{

        struct snd_pdacf *chip = link->priv;

        snd_printdd(KERN_DEBUG "pdacf_detach called\n");

        if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)

                snd_pdacf_powerdown(chip);

        chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */

        snd_card_disconnect(chip->card);

        snd_card_free_when_closed(chip->card);

}

/*

 * configuration callback

 */

#define CS_CHECK(fn, ret) \

do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)

static int pdacf_config(struct pcmcia_device *link)

{

        struct snd_pdacf *pdacf = link->priv;

        int last_fn, last_ret;

        snd_printdd(KERN_DEBUG "pdacf_config called\n");

        link->conf.ConfigIndex = 0x5;

        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));

        if (snd_pdacf_assign_resources(pdacf, link->io.BasePort1, link->irq.AssignedIRQ) < 0)

                goto failed;

        link->dev_node = &pdacf->node;

        return 0;

cs_failed:

        cs_error(link, last_fn, last_ret);

failed:

        pcmcia_disable_device(link);

        return -ENODEV;

}

#ifdef CONFIG_PM

static int pdacf_suspend(struct pcmcia_device *link)

{

        struct snd_pdacf *chip = link->priv;

        snd_printdd(KERN_DEBUG "SUSPEND\n");

        if (chip) {

                snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");

                snd_pdacf_suspend(chip, PMSG_SUSPEND);

        }

        return 0;

}

static int pdacf_resume(struct pcmcia_device *link)

{

        struct snd_pdacf *chip = link->priv;

        snd_printdd(KERN_DEBUG "RESUME\n");

        if (pcmcia_dev_present(link)) {

                if (chip) {

                        snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");

                        snd_pdacf_resume(chip);

                }

        }

        snd_printdd(KERN_DEBUG "resume done!\n");

        return 0;

}

#endif

/*

 * Module entry points

 */

static struct pcmcia_device_id snd_pdacf_ids[] = {

        /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */

        PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),

        PCMCIA_DEVICE_NULL

};

MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);

static struct pcmcia_driver pdacf_cs_driver = {

        .owner          = THIS_MODULE,

        .drv            = {

                .name   = "snd-pdaudiocf",

        },

        .probe          = snd_pdacf_probe,

        .remove         = snd_pdacf_detach,

        .id_table       = snd_pdacf_ids,

#ifdef CONFIG_PM

        .suspend        = pdacf_suspend,

        .resume         = pdacf_resume,

#endif

};

static int __init init_pdacf(void)

{

        return pcmcia_register_driver(&pdacf_cs_driver);

}

static void __exit exit_pdacf(void)

{

        pcmcia_unregister_driver(&pdacf_cs_driver);

}

module_init(init_pdacf);

module_exit(exit_pdacf);