linux/sound/aoa/core/alsa.c
Thomas Gleixner d6869352cb treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 250
Based on 1 normalized pattern(s):

  gpl v2 can be found in copying

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 20 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Alexios Zavras <alexios.zavras@intel.com>
Reviewed-by: Enrico Weigelt <info@metux.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190602204655.283615864@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:08 +02:00

99 lines
2.4 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Apple Onboard Audio Alsa helpers
*
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
*/
#include <linux/module.h>
#include "alsa.h"
static int index = -1;
module_param(index, int, 0444);
MODULE_PARM_DESC(index, "index for AOA sound card.");
static struct aoa_card *aoa_card;
int aoa_alsa_init(char *name, struct module *mod, struct device *dev)
{
struct snd_card *alsa_card;
int err;
if (aoa_card)
/* cannot be EEXIST due to usage in aoa_fabric_register */
return -EBUSY;
err = snd_card_new(dev, index, name, mod, sizeof(struct aoa_card),
&alsa_card);
if (err < 0)
return err;
aoa_card = alsa_card->private_data;
aoa_card->alsa_card = alsa_card;
strlcpy(alsa_card->driver, "AppleOnbdAudio", sizeof(alsa_card->driver));
strlcpy(alsa_card->shortname, name, sizeof(alsa_card->shortname));
strlcpy(alsa_card->longname, name, sizeof(alsa_card->longname));
strlcpy(alsa_card->mixername, name, sizeof(alsa_card->mixername));
err = snd_card_register(aoa_card->alsa_card);
if (err < 0) {
printk(KERN_ERR "snd-aoa: couldn't register alsa card\n");
snd_card_free(aoa_card->alsa_card);
aoa_card = NULL;
return err;
}
return 0;
}
struct snd_card *aoa_get_card(void)
{
if (aoa_card)
return aoa_card->alsa_card;
return NULL;
}
EXPORT_SYMBOL_GPL(aoa_get_card);
void aoa_alsa_cleanup(void)
{
if (aoa_card) {
snd_card_free(aoa_card->alsa_card);
aoa_card = NULL;
}
}
int aoa_snd_device_new(enum snd_device_type type,
void * device_data, struct snd_device_ops * ops)
{
struct snd_card *card = aoa_get_card();
int err;
if (!card) return -ENOMEM;
err = snd_device_new(card, type, device_data, ops);
if (err) {
printk(KERN_ERR "snd-aoa: failed to create snd device (%d)\n", err);
return err;
}
err = snd_device_register(card, device_data);
if (err) {
printk(KERN_ERR "snd-aoa: failed to register "
"snd device (%d)\n", err);
printk(KERN_ERR "snd-aoa: have you forgotten the "
"dev_register callback?\n");
snd_device_free(card, device_data);
}
return err;
}
EXPORT_SYMBOL_GPL(aoa_snd_device_new);
int aoa_snd_ctl_add(struct snd_kcontrol* control)
{
int err;
if (!aoa_card) return -ENODEV;
err = snd_ctl_add(aoa_card->alsa_card, control);
if (err)
printk(KERN_ERR "snd-aoa: failed to add alsa control (%d)\n",
err);
return err;
}
EXPORT_SYMBOL_GPL(aoa_snd_ctl_add);