#include <linux/slab.h>
#include <linux/time.h>
#include <linux/ctype.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+
#include <sound/core.h>
#include <sound/control.h>
#include <sound/info.h>
struct snd_shutdown_f_ops *next;
};
-int snd_cards_count = 0;
unsigned int snd_cards_lock = 0; /* locked for registering/using */
-snd_card_t *snd_cards[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = NULL};
-rwlock_t snd_card_rwlock = RW_LOCK_UNLOCKED;
+struct snd_card *snd_cards[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = NULL};
+DEFINE_RWLOCK(snd_card_rwlock);
#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
-int (*snd_mixer_oss_notify_callback)(snd_card_t *card, int free_flag);
+int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int free_flag);
#endif
-static void snd_card_id_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+#ifdef CONFIG_PROC_FS
+static void snd_card_id_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
{
snd_iprintf(buffer, "%s\n", entry->card->id);
}
+static inline int init_info_for_card(struct snd_card *card)
+{
+ int err;
+ struct snd_info_entry *entry;
+
+ if ((err = snd_info_card_register(card)) < 0) {
+ snd_printd("unable to create card info\n");
+ return err;
+ }
+ if ((entry = snd_info_create_card_entry(card, "id", card->proc_root)) == NULL) {
+ snd_printd("unable to create card entry\n");
+ return err;
+ }
+ entry->c.text.read_size = PAGE_SIZE;
+ entry->c.text.read = snd_card_id_read;
+ if (snd_info_register(entry) < 0) {
+ snd_info_free_entry(entry);
+ entry = NULL;
+ }
+ card->proc_id = entry;
+ return 0;
+}
+#else /* !CONFIG_PROC_FS */
+#define init_info_for_card(card)
+#endif
+
static void snd_card_free_thread(void * __card);
/**
*
* Creates and initializes a soundcard structure.
*
- * Returns kmallocated snd_card_t structure. Creates the ALSA control interface
+ * Returns kmallocated snd_card structure. Creates the ALSA control interface
* (which is blocked until snd_card_register function is called).
*/
-snd_card_t *snd_card_new(int idx, const char *xid,
+struct snd_card *snd_card_new(int idx, const char *xid,
struct module *module, int extra_size)
{
- snd_card_t *card;
+ struct snd_card *card;
int err;
if (extra_size < 0)
extra_size = 0;
- card = (snd_card_t *) snd_kcalloc(sizeof(snd_card_t) + extra_size, GFP_KERNEL);
+ card = kzalloc(sizeof(*card) + extra_size, GFP_KERNEL);
if (card == NULL)
return NULL;
if (xid) {
write_lock(&snd_card_rwlock);
if (idx < 0) {
int idx2;
- for (idx2 = 0; idx2 < snd_ecards_limit; idx2++)
- if (!(snd_cards_lock & (1 << idx2))) {
+ for (idx2 = 0; idx2 < SNDRV_CARDS; idx2++)
+ if (~snd_cards_lock & idx & 1<<idx2) {
idx = idx2;
+ if (idx >= snd_ecards_limit)
+ snd_ecards_limit = idx + 1;
break;
}
- if (idx < 0 && snd_ecards_limit < SNDRV_CARDS)
- /* for dynamically additional devices like hotplug:
- * increment the limit if still free slot exists.
- */
- idx = snd_ecards_limit++;
} else if (idx < snd_ecards_limit) {
if (snd_cards_lock & (1 << idx))
err = -ENODEV; /* invalid */
init_waitqueue_head(&card->shutdown_sleep);
INIT_WORK(&card->free_workq, snd_card_free_thread, card);
#ifdef CONFIG_PM
- init_MUTEX(&card->power_lock);
+ mutex_init(&card->power_lock);
init_waitqueue_head(&card->power_sleep);
#endif
/* the control interface cannot be accessed from the user space until */
/* snd_cards_bitmask and snd_cards are set with snd_card_register */
- if ((err = snd_ctl_register(card)) < 0) {
+ if ((err = snd_ctl_create(card)) < 0) {
snd_printd("unable to register control minors\n");
goto __error;
}
goto __error_ctl;
}
if (extra_size > 0)
- card->private_data = (char *)card + sizeof(snd_card_t);
+ card->private_data = (char *)card + sizeof(struct snd_card);
return card;
__error_ctl:
- snd_ctl_unregister(card);
+ snd_device_free_all(card, SNDRV_DEV_CMD_PRE);
__error:
kfree(card);
return NULL;
}
+static loff_t snd_disconnect_llseek(struct file *file, loff_t offset, int orig)
+{
+ return -ENODEV;
+}
+
+static ssize_t snd_disconnect_read(struct file *file, char __user *buf,
+ size_t count, loff_t *offset)
+{
+ return -ENODEV;
+}
+
+static ssize_t snd_disconnect_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *offset)
+{
+ return -ENODEV;
+}
+
static unsigned int snd_disconnect_poll(struct file * file, poll_table * wait)
{
return POLLERR | POLLNVAL;
}
+static long snd_disconnect_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ return -ENODEV;
+}
+
+static int snd_disconnect_mmap(struct file *file, struct vm_area_struct *vma)
+{
+ return -ENODEV;
+}
+
+static int snd_disconnect_fasync(int fd, struct file *file, int on)
+{
+ return -ENODEV;
+}
+
/**
* snd_card_disconnect - disconnect all APIs from the file-operations (user space)
* @card: soundcard structure
* Note: The current implementation replaces all active file->f_op with special
* dummy file operations (they do nothing except release).
*/
-int snd_card_disconnect(snd_card_t * card)
+int snd_card_disconnect(struct snd_card *card)
{
struct snd_monitor_file *mfile;
struct file *file;
struct snd_shutdown_f_ops *s_f_ops;
- struct file_operations *f_ops, *old_f_ops;
+ struct file_operations *f_ops;
+ const struct file_operations *old_f_ops;
int err;
spin_lock(&card->files_lock);
memset(f_ops, 0, sizeof(*f_ops));
f_ops->owner = file->f_op->owner;
f_ops->release = file->f_op->release;
+ f_ops->llseek = snd_disconnect_llseek;
+ f_ops->read = snd_disconnect_read;
+ f_ops->write = snd_disconnect_write;
f_ops->poll = snd_disconnect_poll;
+ f_ops->unlocked_ioctl = snd_disconnect_ioctl;
+#ifdef CONFIG_COMPAT
+ f_ops->compat_ioctl = snd_disconnect_ioctl;
+#endif
+ f_ops->mmap = snd_disconnect_mmap;
+ f_ops->fasync = snd_disconnect_fasync;
s_f_ops->next = card->s_f_ops;
card->s_f_ops = s_f_ops;
/* phase 3: notify all connected devices about disconnection */
/* at this point, they cannot respond to any calls except release() */
- snd_ctl_disconnect(card);
-
#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
if (snd_mixer_oss_notify_callback)
snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_DISCONNECT);
* Returns zero. Frees all associated devices and frees the control
* interface associated to given soundcard.
*/
-int snd_card_free(snd_card_t * card)
+int snd_card_free(struct snd_card *card)
{
struct snd_shutdown_f_ops *s_f_ops;
return -EINVAL;
write_lock(&snd_card_rwlock);
snd_cards[card->number] = NULL;
- snd_cards_count--;
write_unlock(&snd_card_rwlock);
#ifdef CONFIG_PM
wake_up(&card->power_sleep);
#endif
-
/* wait, until all devices are ready for the free operation */
wait_event(card->shutdown_sleep, card->files == NULL);
snd_printk(KERN_ERR "unable to free all devices (normal)\n");
/* Fatal, but this situation should never occur */
}
- if (snd_ctl_unregister(card) < 0) {
- snd_printk(KERN_ERR "unable to unregister control minors\n");
- /* Not fatal error */
- }
if (snd_device_free_all(card, SNDRV_DEV_CMD_POST) < 0) {
snd_printk(KERN_ERR "unable to free all devices (post)\n");
/* Fatal, but this situation should never occur */
}
if (card->private_free)
card->private_free(card);
- if (card->proc_id)
- snd_info_unregister(card->proc_id);
+ snd_info_unregister(card->proc_id);
if (snd_info_card_free(card) < 0) {
snd_printk(KERN_WARNING "unable to free card info\n");
/* Not fatal error */
static void snd_card_free_thread(void * __card)
{
- snd_card_t *card = __card;
+ struct snd_card *card = __card;
struct module * module = card->module;
if (!try_module_get(module)) {
*
* Returns - zero otherwise a negative error code if the start of thread failed.
*/
-int snd_card_free_in_thread(snd_card_t * card)
+int snd_card_free_in_thread(struct snd_card *card)
{
if (card->files == NULL) {
snd_card_free(card);
return -EFAULT;
}
-static void choose_default_id(snd_card_t * card)
+static void choose_default_id(struct snd_card *card)
{
- int i, len, idx_flag = 0, loops = 8;
+ int i, len, idx_flag = 0, loops = SNDRV_CARDS;
char *id, *spos;
id = spos = card->shortname;
while (1) {
if (loops-- == 0) {
- snd_printk(KERN_ERR "unable to choose default card id (%s)", id);
+ snd_printk(KERN_ERR "unable to choose default card id (%s)\n", id);
strcpy(card->id, card->proc_root->name);
return;
}
__change:
len = strlen(id);
- if (idx_flag)
- id[len-1]++;
- else if ((size_t)len <= sizeof(card->id) - 3) {
+ if (idx_flag) {
+ if (id[len-1] != '9')
+ id[len-1]++;
+ else
+ id[len-1] = 'A';
+ } else if ((size_t)len <= sizeof(card->id) - 3) {
strcat(id, "_1");
idx_flag++;
} else {
*
* Returns zero otherwise a negative error code if the registrain failed.
*/
-int snd_card_register(snd_card_t * card)
+int snd_card_register(struct snd_card *card)
{
int err;
- snd_info_entry_t *entry;
- snd_runtime_check(card != NULL, return -EINVAL);
+ snd_assert(card != NULL, return -EINVAL);
if ((err = snd_device_register_all(card)) < 0)
return err;
write_lock(&snd_card_rwlock);
if (card->id[0] == '\0')
choose_default_id(card);
snd_cards[card->number] = card;
- snd_cards_count++;
write_unlock(&snd_card_rwlock);
- if ((err = snd_info_card_register(card)) < 0) {
- snd_printd("unable to create card info\n");
- goto __skip_info;
- }
- if ((entry = snd_info_create_card_entry(card, "id", card->proc_root)) == NULL) {
- snd_printd("unable to create card entry\n");
- goto __skip_info;
- }
- entry->c.text.read_size = PAGE_SIZE;
- entry->c.text.read = snd_card_id_read;
- if (snd_info_register(entry) < 0) {
- snd_info_free_entry(entry);
- entry = NULL;
- }
- card->proc_id = entry;
- __skip_info:
+ init_info_for_card(card);
#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
if (snd_mixer_oss_notify_callback)
snd_mixer_oss_notify_callback(card, SND_MIXER_OSS_NOTIFY_REGISTER);
return 0;
}
-static snd_info_entry_t *snd_card_info_entry = NULL;
+#ifdef CONFIG_PROC_FS
+static struct snd_info_entry *snd_card_info_entry = NULL;
-static void snd_card_info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+static void snd_card_info_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
{
int idx, count;
- snd_card_t *card;
+ struct snd_card *card;
for (idx = count = 0; idx < SNDRV_CARDS; idx++) {
read_lock(&snd_card_rwlock);
if ((card = snd_cards[idx]) != NULL) {
count++;
- snd_iprintf(buffer, "%i [%-15s]: %s - %s\n",
+ snd_iprintf(buffer, "%2i [%-15s]: %s - %s\n",
idx,
card->id,
card->driver,
card->shortname);
- snd_iprintf(buffer, " %s\n",
+ snd_iprintf(buffer, " %s\n",
card->longname);
}
read_unlock(&snd_card_rwlock);
snd_iprintf(buffer, "--- no soundcards ---\n");
}
-#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
+#ifdef CONFIG_SND_OSSEMUL
-void snd_card_info_read_oss(snd_info_buffer_t * buffer)
+void snd_card_info_read_oss(struct snd_info_buffer *buffer)
{
int idx, count;
- snd_card_t *card;
+ struct snd_card *card;
for (idx = count = 0; idx < SNDRV_CARDS; idx++) {
read_lock(&snd_card_rwlock);
#endif
#ifdef MODULE
-static snd_info_entry_t *snd_card_module_info_entry;
-static void snd_card_module_info_read(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+static struct snd_info_entry *snd_card_module_info_entry;
+static void snd_card_module_info_read(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
{
int idx;
- snd_card_t *card;
+ struct snd_card *card;
for (idx = 0; idx < SNDRV_CARDS; idx++) {
read_lock(&snd_card_rwlock);
if ((card = snd_cards[idx]) != NULL)
- snd_iprintf(buffer, "%i %s\n", idx, card->module->name);
+ snd_iprintf(buffer, "%2i %s\n",
+ idx, card->module->name);
read_unlock(&snd_card_rwlock);
}
}
int __init snd_card_info_init(void)
{
- snd_info_entry_t *entry;
+ struct snd_info_entry *entry;
entry = snd_info_create_module_entry(THIS_MODULE, "cards", NULL);
- snd_runtime_check(entry != NULL, return -ENOMEM);
+ if (! entry)
+ return -ENOMEM;
entry->c.text.read_size = PAGE_SIZE;
entry->c.text.read = snd_card_info_read;
if (snd_info_register(entry) < 0) {
int __exit snd_card_info_done(void)
{
- if (snd_card_info_entry)
- snd_info_unregister(snd_card_info_entry);
+ snd_info_unregister(snd_card_info_entry);
#ifdef MODULE
- if (snd_card_module_info_entry)
- snd_info_unregister(snd_card_module_info_entry);
+ snd_info_unregister(snd_card_module_info_entry);
#endif
return 0;
}
+#endif /* CONFIG_PROC_FS */
+
/**
* snd_component_add - add a component string
* @card: soundcard structure
* Returns zero otherwise a negative error code.
*/
-int snd_component_add(snd_card_t *card, const char *component)
+int snd_component_add(struct snd_card *card, const char *component)
{
char *ptr;
int len = strlen(component);
*
* Returns zero or a negative error code.
*/
-int snd_card_file_add(snd_card_t *card, struct file *file)
+int snd_card_file_add(struct snd_card *card, struct file *file)
{
struct snd_monitor_file *mfile;
*
* Returns zero or a negative error code.
*/
-int snd_card_file_remove(snd_card_t *card, struct file *file)
+int snd_card_file_remove(struct snd_card *card, struct file *file)
{
struct snd_monitor_file *mfile, *pfile = NULL;
spin_unlock(&card->files_lock);
if (card->files == NULL)
wake_up(&card->shutdown_sleep);
- if (mfile) {
- kfree(mfile);
- } else {
+ if (!mfile) {
snd_printk(KERN_ERR "ALSA card file remove problem (%p)\n", file);
return -ENOENT;
}
+ kfree(mfile);
return 0;
}
* snd_power_wait - wait until the power-state is changed.
* @card: soundcard structure
* @power_state: expected power state
- * @file: file structure for the O_NONBLOCK check (optional)
*
* Waits until the power-state is changed.
*
* Note: the power lock must be active before call.
*/
-int snd_power_wait(snd_card_t *card, unsigned int power_state, struct file *file)
+int snd_power_wait(struct snd_card *card, unsigned int power_state)
{
wait_queue_t wait;
int result = 0;
}
if (snd_power_get_state(card) == power_state)
break;
-#if 0 /* block all devices */
- if (file && (file->f_flags & O_NONBLOCK)) {
- result = -EAGAIN;
- break;
- }
-#endif
set_current_state(TASK_UNINTERRUPTIBLE);
snd_power_unlock(card);
schedule_timeout(30 * HZ);
remove_wait_queue(&card->power_sleep, &wait);
return result;
}
+
#endif /* CONFIG_PM */
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