diff options
Diffstat (limited to 'target/linux/ubicom32/files/sound/ubicom32/ubi32-generic-capture.c')
| -rw-r--r-- | target/linux/ubicom32/files/sound/ubicom32/ubi32-generic-capture.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/sound/ubicom32/ubi32-generic-capture.c b/target/linux/ubicom32/files/sound/ubicom32/ubi32-generic-capture.c new file mode 100644 index 000000000..a911cc6a1 --- /dev/null +++ b/target/linux/ubicom32/files/sound/ubicom32/ubi32-generic-capture.c @@ -0,0 +1,167 @@ +/* + * 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"); |