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/*
* sound/ubicom32/ubi32-generic-capture.c
* Interface to ubicom32 virtual audio peripheral
*
* (C) Copyright 2009, Ubicom, Inc.
*
* This file is part of the Ubicom32 Linux Kernel Port.
*
* The Ubicom32 Linux Kernel Port 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.
*
* The Ubicom32 Linux Kernel Port 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 the Ubicom32 Linux Kernel Port. If not,
* see <http://www.gnu.org/licenses/>.
*
* Ubicom32 implementation derived from (with many thanks):
* arch/m68knommu
* arch/blackfin
* arch/parisc
*/
#include <linux/platform_device.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/initval.h>
#include "ubi32.h"
#define DRIVER_NAME "snd-ubi32-generic-capture"
/*
* Module properties
*/
static int index = SNDRV_DEFAULT_IDX1; /* Index 0-MAX */
/*
* Card private data free function
*/
void snd_ubi32_generic_capture_free(struct snd_card *card)
{
/*
* Free all the fields in the snd_ubi32_priv struct
*/
// Nothing to free at this time because ubi32_priv just maintains pointers
}
/*
* Ubicom audio driver probe() method. Args change depending on whether we use
* platform_device or i2c_device.
*/
static int snd_ubi32_generic_capture_probe(struct platform_device *dev)
{
struct snd_card *card;
struct ubi32_snd_priv *ubi32_priv;
int err;
/*
* Create a snd_card structure
*/
card = snd_card_new(index, "Ubi32-Generic-C", THIS_MODULE, sizeof(struct ubi32_snd_priv));
if (card == NULL) {
return -ENOMEM;
}
card->private_free = snd_ubi32_generic_capture_free; /* Not sure if correct */
ubi32_priv = card->private_data;
/*
* Initialize the snd_card's private data structure
*/
ubi32_priv->card = card;
ubi32_priv->is_capture = 1;
/*
* Create the new PCM instance
*/
err = snd_ubi32_pcm_probe(ubi32_priv, dev);
if (err < 0) {
snd_card_free(card);
return err;
}
strcpy(card->driver, "Ubi32-Generic-C");
strcpy(card->shortname, "Ubi32-Generic-C");
snprintf(card->longname, sizeof(card->longname),
"%s at sendirq=%d.%d recvirq=%d.%d regs=%p",
card->shortname, ubi32_priv->tx_irq, ubi32_priv->irq_idx,
ubi32_priv->rx_irq, ubi32_priv->irq_idx, ubi32_priv->adr);
snd_card_set_dev(card, &dev->dev);
/* Register the sound card */
if ((err = snd_card_register(card)) != 0) {
snd_printk(KERN_INFO "snd_card_register error\n");
}
/* Store card for access from other methods */
platform_set_drvdata(dev, card);
return 0;
}
/*
* Ubicom audio driver remove() method
*/
static int __devexit snd_ubi32_generic_capture_remove(struct platform_device *dev)
{
struct snd_card *card;
struct ubi32_snd_priv *ubi32_priv;
card = platform_get_drvdata(dev);
ubi32_priv = card->private_data;
snd_ubi32_pcm_remove(ubi32_priv);
snd_card_free(platform_get_drvdata(dev));
platform_set_drvdata(dev, NULL);
return 0;
}
/*
* Platform driver definition
*/
static struct platform_driver snd_ubi32_generic_capture_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
},
.probe = snd_ubi32_generic_capture_probe,
.remove = __devexit_p(snd_ubi32_generic_capture_remove),
};
/*
* snd_ubi32_generic_capture_init
*/
static int __init snd_ubi32_generic_capture_init(void)
{
return platform_driver_register(&snd_ubi32_generic_capture_driver);
}
module_init(snd_ubi32_generic_capture_init);
/*
* snd_ubi32_generic_capture_exit
*/
static void __exit snd_ubi32_generic_capture_exit(void)
{
platform_driver_unregister(&snd_ubi32_generic_capture_driver);
}
module_exit(snd_ubi32_generic_capture_exit);
/*
* Module properties
*/
//#if defined(CONFIG_SND_UBI32_AUDIO_I2C)
//MODULE_ALIAS("i2c:snd-ubi32");
//#endif
MODULE_AUTHOR("Patrick Tjin");
MODULE_DESCRIPTION("Driver for Ubicom32 audio devices");
MODULE_LICENSE("GPL");
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