#include <sound/control.h>
#include <sound/initval.h>
#include <linux/kmod.h>
-#include <linux/devfs_fs_kernel.h>
+#include <linux/mutex.h>
#define SNDRV_OS_MINORS 256
static int major = CONFIG_SND_MAJOR;
int snd_major;
+EXPORT_SYMBOL(snd_major);
+
static int cards_limit = 1;
-static int device_mode = S_IFCHR | S_IRUGO | S_IWUGO;
MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
MODULE_DESCRIPTION("Advanced Linux Sound Architecture driver for soundcards.");
MODULE_PARM_DESC(major, "Major # for sound driver.");
module_param(cards_limit, int, 0444);
MODULE_PARM_DESC(cards_limit, "Count of auto-loadable soundcards.");
-#ifdef CONFIG_DEVFS_FS
-module_param(device_mode, int, 0444);
-MODULE_PARM_DESC(device_mode, "Device file permission mask for devfs.");
-#endif
MODULE_ALIAS_CHARDEV_MAJOR(CONFIG_SND_MAJOR);
/* this one holds the actual max. card number currently available.
* modules are loaded manually, this limit number increases, too.
*/
int snd_ecards_limit;
+EXPORT_SYMBOL(snd_ecards_limit);
static struct snd_minor *snd_minors[SNDRV_OS_MINORS];
-static DECLARE_MUTEX(sound_mutex);
-
-extern struct class *sound_class;
-
+static DEFINE_MUTEX(sound_mutex);
#ifdef CONFIG_KMOD
*/
void snd_request_card(int card)
{
- int locked;
-
if (! current->fs->root)
return;
- read_lock(&snd_card_rwlock);
- locked = snd_cards_lock & (1 << card);
- read_unlock(&snd_card_rwlock);
- if (locked)
+ if (snd_card_locked(card))
return;
if (card < 0 || card >= cards_limit)
return;
request_module("snd-card-%i", card);
}
+EXPORT_SYMBOL(snd_request_card);
+
static void snd_request_other(int minor)
{
char *str;
if (minor >= ARRAY_SIZE(snd_minors))
return NULL;
- down(&sound_mutex);
+ mutex_lock(&sound_mutex);
mreg = snd_minors[minor];
if (mreg && mreg->type == type)
private_data = mreg->private_data;
else
private_data = NULL;
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
return private_data;
}
+EXPORT_SYMBOL(snd_lookup_minor_data);
+
static int snd_open(struct inode *inode, struct file *file)
{
unsigned int minor = iminor(inode);
struct snd_minor *mptr = NULL;
- struct file_operations *old_fops;
+ const struct file_operations *old_fops;
int err = 0;
if (minor >= ARRAY_SIZE(snd_minors))
* Retrurns zero if successful, or a negative error code on failure.
*/
int snd_register_device(int type, struct snd_card *card, int dev,
- struct file_operations *f_ops, void *private_data,
+ const struct file_operations *f_ops, void *private_data,
const char *name)
{
int minor;
struct snd_minor *preg;
- struct device *device = NULL;
+ struct device *device = snd_card_get_device_link(card);
snd_assert(name, return -EINVAL);
- preg = kmalloc(sizeof(struct snd_minor) + strlen(name) + 1, GFP_KERNEL);
+ preg = kmalloc(sizeof *preg, GFP_KERNEL);
if (preg == NULL)
return -ENOMEM;
preg->type = type;
preg->device = dev;
preg->f_ops = f_ops;
preg->private_data = private_data;
- strcpy(preg->name, name);
- down(&sound_mutex);
+ mutex_lock(&sound_mutex);
#ifdef CONFIG_SND_DYNAMIC_MINORS
minor = snd_find_free_minor();
#else
minor = -EBUSY;
#endif
if (minor < 0) {
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
kfree(preg);
return minor;
}
snd_minors[minor] = preg;
- if (type != SNDRV_DEVICE_TYPE_CONTROL || preg->card >= cards_limit)
- devfs_mk_cdev(MKDEV(major, minor), S_IFCHR | device_mode, "snd/%s", name);
- if (card)
- device = card->dev;
- class_device_create(sound_class, NULL, MKDEV(major, minor), device, "%s", name);
+ preg->dev = device_create(sound_class, device, MKDEV(major, minor),
+ "%s", name);
+ if (preg->dev)
+ dev_set_drvdata(preg->dev, private_data);
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
return 0;
}
+EXPORT_SYMBOL(snd_register_device);
+
+/* find the matching minor record
+ * return the index of snd_minor, or -1 if not found
+ */
+static int find_snd_minor(int type, struct snd_card *card, int dev)
+{
+ int cardnum, minor;
+ struct snd_minor *mptr;
+
+ cardnum = card ? card->number : -1;
+ for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor)
+ if ((mptr = snd_minors[minor]) != NULL &&
+ mptr->type == type &&
+ mptr->card == cardnum &&
+ mptr->device == dev)
+ return minor;
+ return -1;
+}
+
/**
* snd_unregister_device - unregister the device on the given card
* @type: the device type, SNDRV_DEVICE_TYPE_XXX
*/
int snd_unregister_device(int type, struct snd_card *card, int dev)
{
- int cardnum, minor;
- struct snd_minor *mptr;
+ int minor;
- cardnum = card ? card->number : -1;
- down(&sound_mutex);
- for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor)
- if ((mptr = snd_minors[minor]) != NULL &&
- mptr->type == type &&
- mptr->card == cardnum &&
- mptr->device == dev)
- break;
- if (minor == ARRAY_SIZE(snd_minors)) {
- up(&sound_mutex);
+ mutex_lock(&sound_mutex);
+ minor = find_snd_minor(type, card, dev);
+ if (minor < 0) {
+ mutex_unlock(&sound_mutex);
return -EINVAL;
}
- if (mptr->type != SNDRV_DEVICE_TYPE_CONTROL ||
- mptr->card >= cards_limit) /* created in sound.c */
- devfs_remove("snd/%s", mptr->name);
- class_device_destroy(sound_class, MKDEV(major, minor));
+ device_destroy(sound_class, MKDEV(major, minor));
+ kfree(snd_minors[minor]);
snd_minors[minor] = NULL;
- up(&sound_mutex);
- kfree(mptr);
+ mutex_unlock(&sound_mutex);
return 0;
}
+EXPORT_SYMBOL(snd_unregister_device);
+
+int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
+ struct device_attribute *attr)
+{
+ int minor, ret = -EINVAL;
+ struct device *d;
+
+ mutex_lock(&sound_mutex);
+ minor = find_snd_minor(type, card, dev);
+ if (minor >= 0 && (d = snd_minors[minor]->dev) != NULL)
+ ret = device_create_file(d, attr);
+ mutex_unlock(&sound_mutex);
+ return ret;
+
+}
+
+EXPORT_SYMBOL(snd_add_device_sysfs_file);
+
#ifdef CONFIG_PROC_FS
/*
* INFO PART
*/
-static struct snd_info_entry *snd_minor_info_entry = NULL;
+static struct snd_info_entry *snd_minor_info_entry;
static const char *snd_device_type_name(int type)
{
int minor;
struct snd_minor *mptr;
- down(&sound_mutex);
+ mutex_lock(&sound_mutex);
for (minor = 0; minor < SNDRV_OS_MINORS; ++minor) {
if (!(mptr = snd_minors[minor]))
continue;
snd_iprintf(buffer, "%3i: : %s\n", minor,
snd_device_type_name(mptr->type));
}
- up(&sound_mutex);
+ mutex_unlock(&sound_mutex);
}
int __init snd_minor_info_init(void)
entry = snd_info_create_module_entry(THIS_MODULE, "devices", NULL);
if (entry) {
- entry->c.text.read_size = PAGE_SIZE;
entry->c.text.read = snd_minor_info_read;
if (snd_info_register(entry) < 0) {
snd_info_free_entry(entry);
int __exit snd_minor_info_done(void)
{
- if (snd_minor_info_entry)
- snd_info_unregister(snd_minor_info_entry);
+ snd_info_free_entry(snd_minor_info_entry);
return 0;
}
#endif /* CONFIG_PROC_FS */
static int __init alsa_sound_init(void)
{
- short controlnum;
-
snd_major = major;
snd_ecards_limit = cards_limit;
- devfs_mk_dir("snd");
if (register_chrdev(major, "alsa", &snd_fops)) {
snd_printk(KERN_ERR "unable to register native major device number %d\n", major);
- devfs_remove("snd");
return -EIO;
}
if (snd_info_init() < 0) {
unregister_chrdev(major, "alsa");
- devfs_remove("snd");
return -ENOMEM;
}
snd_info_minor_register();
- for (controlnum = 0; controlnum < cards_limit; controlnum++)
- devfs_mk_cdev(MKDEV(major, controlnum<<5), S_IFCHR | device_mode, "snd/controlC%d", controlnum);
#ifndef MODULE
printk(KERN_INFO "Advanced Linux Sound Architecture Driver Version " CONFIG_SND_VERSION CONFIG_SND_DATE ".\n");
#endif
static void __exit alsa_sound_exit(void)
{
- short controlnum;
-
- for (controlnum = 0; controlnum < cards_limit; controlnum++)
- devfs_remove("snd/controlC%d", controlnum);
-
snd_info_minor_unregister();
snd_info_done();
if (unregister_chrdev(major, "alsa") != 0)
snd_printk(KERN_ERR "unable to unregister major device number %d\n", major);
- devfs_remove("snd");
}
module_init(alsa_sound_init)
module_exit(alsa_sound_exit)
-
- /* sound.c */
-EXPORT_SYMBOL(snd_major);
-EXPORT_SYMBOL(snd_ecards_limit);
-#if defined(CONFIG_KMOD)
-EXPORT_SYMBOL(snd_request_card);
-#endif
-EXPORT_SYMBOL(snd_register_device);
-EXPORT_SYMBOL(snd_unregister_device);
-EXPORT_SYMBOL(snd_lookup_minor_data);
-#if defined(CONFIG_SND_OSSEMUL)
-EXPORT_SYMBOL(snd_register_oss_device);
-EXPORT_SYMBOL(snd_unregister_oss_device);
-EXPORT_SYMBOL(snd_lookup_oss_minor_data);
-#endif
- /* memory.c */
-EXPORT_SYMBOL(copy_to_user_fromio);
-EXPORT_SYMBOL(copy_from_user_toio);
- /* init.c */
-EXPORT_SYMBOL(snd_cards);
-#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
-EXPORT_SYMBOL(snd_mixer_oss_notify_callback);
-#endif
-EXPORT_SYMBOL(snd_card_new);
-EXPORT_SYMBOL(snd_card_disconnect);
-EXPORT_SYMBOL(snd_card_free);
-EXPORT_SYMBOL(snd_card_free_in_thread);
-EXPORT_SYMBOL(snd_card_register);
-EXPORT_SYMBOL(snd_component_add);
-EXPORT_SYMBOL(snd_card_file_add);
-EXPORT_SYMBOL(snd_card_file_remove);
-#ifdef CONFIG_PM
-EXPORT_SYMBOL(snd_power_wait);
-#endif
- /* device.c */
-EXPORT_SYMBOL(snd_device_new);
-EXPORT_SYMBOL(snd_device_register);
-EXPORT_SYMBOL(snd_device_free);
- /* isadma.c */
-#ifdef CONFIG_ISA_DMA_API
-EXPORT_SYMBOL(snd_dma_program);
-EXPORT_SYMBOL(snd_dma_disable);
-EXPORT_SYMBOL(snd_dma_pointer);
-#endif
- /* info.c */
-#ifdef CONFIG_PROC_FS
-EXPORT_SYMBOL(snd_seq_root);
-EXPORT_SYMBOL(snd_iprintf);
-EXPORT_SYMBOL(snd_info_get_line);
-EXPORT_SYMBOL(snd_info_get_str);
-EXPORT_SYMBOL(snd_info_create_module_entry);
-EXPORT_SYMBOL(snd_info_create_card_entry);
-EXPORT_SYMBOL(snd_info_free_entry);
-EXPORT_SYMBOL(snd_info_register);
-EXPORT_SYMBOL(snd_info_unregister);
-EXPORT_SYMBOL(snd_card_proc_new);
-#endif
- /* info_oss.c */
-#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
-EXPORT_SYMBOL(snd_oss_info_register);
-#endif
- /* control.c */
-EXPORT_SYMBOL(snd_ctl_new);
-EXPORT_SYMBOL(snd_ctl_new1);
-EXPORT_SYMBOL(snd_ctl_free_one);
-EXPORT_SYMBOL(snd_ctl_add);
-EXPORT_SYMBOL(snd_ctl_remove);
-EXPORT_SYMBOL(snd_ctl_remove_id);
-EXPORT_SYMBOL(snd_ctl_rename_id);
-EXPORT_SYMBOL(snd_ctl_find_numid);
-EXPORT_SYMBOL(snd_ctl_find_id);
-EXPORT_SYMBOL(snd_ctl_notify);
-EXPORT_SYMBOL(snd_ctl_register_ioctl);
-EXPORT_SYMBOL(snd_ctl_unregister_ioctl);
-#ifdef CONFIG_COMPAT
-EXPORT_SYMBOL(snd_ctl_register_ioctl_compat);
-EXPORT_SYMBOL(snd_ctl_unregister_ioctl_compat);
-#endif
-EXPORT_SYMBOL(snd_ctl_elem_read);
-EXPORT_SYMBOL(snd_ctl_elem_write);
- /* misc.c */
-EXPORT_SYMBOL(release_and_free_resource);
-#ifdef CONFIG_SND_VERBOSE_PRINTK
-EXPORT_SYMBOL(snd_verbose_printk);
-#endif
-#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
-EXPORT_SYMBOL(snd_verbose_printd);
-#endif
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