888dcb7cb2
This cleans up the apple onboard audio driver filenames. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de>
163 lines
3.3 KiB
C
163 lines
3.3 KiB
C
/*
|
|
* Apple Onboard Audio driver core
|
|
*
|
|
* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
|
|
*
|
|
* GPL v2, can be found in COPYING.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/module.h>
|
|
#include <linux/list.h>
|
|
#include "../aoa.h"
|
|
#include "alsa.h"
|
|
|
|
MODULE_DESCRIPTION("Apple Onboard Audio Sound Driver");
|
|
MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
/* We allow only one fabric. This simplifies things,
|
|
* and more don't really make that much sense */
|
|
static struct aoa_fabric *fabric;
|
|
static LIST_HEAD(codec_list);
|
|
|
|
static int attach_codec_to_fabric(struct aoa_codec *c)
|
|
{
|
|
int err;
|
|
|
|
if (!try_module_get(c->owner))
|
|
return -EBUSY;
|
|
/* found_codec has to be assigned */
|
|
err = -ENOENT;
|
|
if (fabric->found_codec)
|
|
err = fabric->found_codec(c);
|
|
if (err) {
|
|
module_put(c->owner);
|
|
printk(KERN_ERR "snd-aoa: fabric didn't like codec %s\n",
|
|
c->name);
|
|
return err;
|
|
}
|
|
c->fabric = fabric;
|
|
|
|
err = 0;
|
|
if (c->init)
|
|
err = c->init(c);
|
|
if (err) {
|
|
printk(KERN_ERR "snd-aoa: codec %s didn't init\n", c->name);
|
|
c->fabric = NULL;
|
|
if (fabric->remove_codec)
|
|
fabric->remove_codec(c);
|
|
module_put(c->owner);
|
|
return err;
|
|
}
|
|
if (fabric->attached_codec)
|
|
fabric->attached_codec(c);
|
|
return 0;
|
|
}
|
|
|
|
int aoa_codec_register(struct aoa_codec *codec)
|
|
{
|
|
int err = 0;
|
|
|
|
/* if there's a fabric already, we can tell if we
|
|
* will want to have this codec, so propagate error
|
|
* through. Otherwise, this will happen later... */
|
|
if (fabric)
|
|
err = attach_codec_to_fabric(codec);
|
|
if (!err)
|
|
list_add(&codec->list, &codec_list);
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(aoa_codec_register);
|
|
|
|
void aoa_codec_unregister(struct aoa_codec *codec)
|
|
{
|
|
list_del(&codec->list);
|
|
if (codec->fabric && codec->exit)
|
|
codec->exit(codec);
|
|
if (fabric && fabric->remove_codec)
|
|
fabric->remove_codec(codec);
|
|
codec->fabric = NULL;
|
|
module_put(codec->owner);
|
|
}
|
|
EXPORT_SYMBOL_GPL(aoa_codec_unregister);
|
|
|
|
int aoa_fabric_register(struct aoa_fabric *new_fabric, struct device *dev)
|
|
{
|
|
struct aoa_codec *c;
|
|
int err;
|
|
|
|
/* allow querying for presence of fabric
|
|
* (i.e. do this test first!) */
|
|
if (new_fabric == fabric) {
|
|
err = -EALREADY;
|
|
goto attach;
|
|
}
|
|
if (fabric)
|
|
return -EEXIST;
|
|
if (!new_fabric)
|
|
return -EINVAL;
|
|
|
|
err = aoa_alsa_init(new_fabric->name, new_fabric->owner, dev);
|
|
if (err)
|
|
return err;
|
|
|
|
fabric = new_fabric;
|
|
|
|
attach:
|
|
list_for_each_entry(c, &codec_list, list) {
|
|
if (c->fabric != fabric)
|
|
attach_codec_to_fabric(c);
|
|
}
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(aoa_fabric_register);
|
|
|
|
void aoa_fabric_unregister(struct aoa_fabric *old_fabric)
|
|
{
|
|
struct aoa_codec *c;
|
|
|
|
if (fabric != old_fabric)
|
|
return;
|
|
|
|
list_for_each_entry(c, &codec_list, list) {
|
|
if (c->fabric)
|
|
aoa_fabric_unlink_codec(c);
|
|
}
|
|
|
|
aoa_alsa_cleanup();
|
|
|
|
fabric = NULL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(aoa_fabric_unregister);
|
|
|
|
void aoa_fabric_unlink_codec(struct aoa_codec *codec)
|
|
{
|
|
if (!codec->fabric) {
|
|
printk(KERN_ERR "snd-aoa: fabric unassigned "
|
|
"in aoa_fabric_unlink_codec\n");
|
|
dump_stack();
|
|
return;
|
|
}
|
|
if (codec->exit)
|
|
codec->exit(codec);
|
|
if (codec->fabric->remove_codec)
|
|
codec->fabric->remove_codec(codec);
|
|
codec->fabric = NULL;
|
|
module_put(codec->owner);
|
|
}
|
|
EXPORT_SYMBOL_GPL(aoa_fabric_unlink_codec);
|
|
|
|
static int __init aoa_init(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void __exit aoa_exit(void)
|
|
{
|
|
aoa_alsa_cleanup();
|
|
}
|
|
|
|
module_init(aoa_init);
|
|
module_exit(aoa_exit);
|