#include <sound/initval.h>
#include <linux/kmod.h>
#include <linux/slab.h>
+#include <linux/mutex.h>
MODULE_AUTHOR("Takashi Iwai <tiwai@suse.de>");
MODULE_DESCRIPTION("ALSA sequencer device management");
MODULE_LICENSE("GPL");
-/*
- * driver list
- */
-typedef struct ops_list ops_list_t;
-
/* driver state */
#define DRIVER_EMPTY 0
#define DRIVER_LOADED (1<<0)
int argsize; /* argument size */
/* operators */
- snd_seq_dev_ops_t ops;
+ struct snd_seq_dev_ops ops;
/* registred devices */
struct list_head dev_list; /* list of devices */
int num_devices; /* number of associated devices */
int num_init_devices; /* number of initialized devices */
- struct semaphore reg_mutex;
+ struct mutex reg_mutex;
struct list_head list; /* next driver */
};
static LIST_HEAD(opslist);
static int num_ops;
-static DECLARE_MUTEX(ops_mutex);
-static snd_info_entry_t *info_entry = NULL;
+static DEFINE_MUTEX(ops_mutex);
+#ifdef CONFIG_PROC_FS
+static struct snd_info_entry *info_entry = NULL;
+#endif
/*
* prototypes
*/
-static int snd_seq_device_free(snd_seq_device_t *dev);
-static int snd_seq_device_dev_free(snd_device_t *device);
-static int snd_seq_device_dev_register(snd_device_t *device);
-static int snd_seq_device_dev_disconnect(snd_device_t *device);
-static int snd_seq_device_dev_unregister(snd_device_t *device);
-
-static int init_device(snd_seq_device_t *dev, ops_list_t *ops);
-static int free_device(snd_seq_device_t *dev, ops_list_t *ops);
-static ops_list_t *find_driver(char *id, int create_if_empty);
-static ops_list_t *create_driver(char *id);
-static void unlock_driver(ops_list_t *ops);
+static int snd_seq_device_free(struct snd_seq_device *dev);
+static int snd_seq_device_dev_free(struct snd_device *device);
+static int snd_seq_device_dev_register(struct snd_device *device);
+static int snd_seq_device_dev_disconnect(struct snd_device *device);
+static int snd_seq_device_dev_unregister(struct snd_device *device);
+
+static int init_device(struct snd_seq_device *dev, struct ops_list *ops);
+static int free_device(struct snd_seq_device *dev, struct ops_list *ops);
+static struct ops_list *find_driver(char *id, int create_if_empty);
+static struct ops_list *create_driver(char *id);
+static void unlock_driver(struct ops_list *ops);
static void remove_drivers(void);
/*
* show all drivers and their status
*/
-static void snd_seq_device_info(snd_info_entry_t *entry, snd_info_buffer_t * buffer)
+#ifdef CONFIG_PROC_FS
+static void snd_seq_device_info(struct snd_info_entry *entry,
+ struct snd_info_buffer *buffer)
{
struct list_head *head;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_for_each(head, &opslist) {
- ops_list_t *ops = list_entry(head, ops_list_t, list);
+ struct ops_list *ops = list_entry(head, struct ops_list, list);
snd_iprintf(buffer, "snd-%s%s%s%s,%d\n",
ops->id,
ops->driver & DRIVER_LOADED ? ",loaded" : (ops->driver == DRIVER_EMPTY ? ",empty" : ""),
ops->driver & DRIVER_LOCKED ? ",locked" : "",
ops->num_devices);
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
}
+#endif
/*
* load all registered drivers (called from seq_clientmgr.c)
if (! current->fs->root)
return;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_for_each(head, &opslist) {
- ops_list_t *ops = list_entry(head, ops_list_t, list);
+ struct ops_list *ops = list_entry(head, struct ops_list, list);
if (! (ops->driver & DRIVER_LOADED) &&
! (ops->driver & DRIVER_REQUESTED)) {
ops->used++;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
ops->driver |= DRIVER_REQUESTED;
request_module("snd-%s", ops->id);
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
ops->used--;
}
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
#endif
}
* id = id of driver
* result = return pointer (NULL allowed if unnecessary)
*/
-int snd_seq_device_new(snd_card_t *card, int device, char *id, int argsize,
- snd_seq_device_t **result)
+int snd_seq_device_new(struct snd_card *card, int device, char *id, int argsize,
+ struct snd_seq_device **result)
{
- snd_seq_device_t *dev;
- ops_list_t *ops;
+ struct snd_seq_device *dev;
+ struct ops_list *ops;
int err;
- static snd_device_ops_t dops = {
+ static struct snd_device_ops dops = {
.dev_free = snd_seq_device_dev_free,
.dev_register = snd_seq_device_dev_register,
.dev_disconnect = snd_seq_device_dev_disconnect,
if (ops == NULL)
return -ENOMEM;
- dev = kcalloc(1, sizeof(*dev)*2 + argsize, GFP_KERNEL);
+ dev = kzalloc(sizeof(*dev)*2 + argsize, GFP_KERNEL);
if (dev == NULL) {
unlock_driver(ops);
return -ENOMEM;
dev->status = SNDRV_SEQ_DEVICE_FREE;
/* add this device to the list */
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
list_add_tail(&dev->list, &ops->dev_list);
ops->num_devices++;
- up(&ops->reg_mutex);
+ mutex_unlock(&ops->reg_mutex);
unlock_driver(ops);
/*
* free the existing device
*/
-static int snd_seq_device_free(snd_seq_device_t *dev)
+static int snd_seq_device_free(struct snd_seq_device *dev)
{
- ops_list_t *ops;
+ struct ops_list *ops;
snd_assert(dev != NULL, return -EINVAL);
return -ENXIO;
/* remove the device from the list */
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
list_del(&dev->list);
ops->num_devices--;
- up(&ops->reg_mutex);
+ mutex_unlock(&ops->reg_mutex);
free_device(dev, ops);
if (dev->private_free)
return 0;
}
-static int snd_seq_device_dev_free(snd_device_t *device)
+static int snd_seq_device_dev_free(struct snd_device *device)
{
- snd_seq_device_t *dev = device->device_data;
+ struct snd_seq_device *dev = device->device_data;
return snd_seq_device_free(dev);
}
/*
* register the device
*/
-static int snd_seq_device_dev_register(snd_device_t *device)
+static int snd_seq_device_dev_register(struct snd_device *device)
{
- snd_seq_device_t *dev = device->device_data;
- ops_list_t *ops;
+ struct snd_seq_device *dev = device->device_data;
+ struct ops_list *ops;
ops = find_driver(dev->id, 0);
if (ops == NULL)
/*
* disconnect the device
*/
-static int snd_seq_device_dev_disconnect(snd_device_t *device)
+static int snd_seq_device_dev_disconnect(struct snd_device *device)
{
- snd_seq_device_t *dev = device->device_data;
- ops_list_t *ops;
+ struct snd_seq_device *dev = device->device_data;
+ struct ops_list *ops;
ops = find_driver(dev->id, 0);
if (ops == NULL)
/*
* unregister the existing device
*/
-static int snd_seq_device_dev_unregister(snd_device_t *device)
+static int snd_seq_device_dev_unregister(struct snd_device *device)
{
- snd_seq_device_t *dev = device->device_data;
+ struct snd_seq_device *dev = device->device_data;
return snd_seq_device_free(dev);
}
* id = driver id
* entry = driver operators - duplicated to each instance
*/
-int snd_seq_device_register_driver(char *id, snd_seq_dev_ops_t *entry, int argsize)
+int snd_seq_device_register_driver(char *id, struct snd_seq_dev_ops *entry,
+ int argsize)
{
struct list_head *head;
- ops_list_t *ops;
+ struct ops_list *ops;
if (id == NULL || entry == NULL ||
entry->init_device == NULL || entry->free_device == NULL)
return -EBUSY;
}
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
/* copy driver operators */
ops->ops = *entry;
ops->driver |= DRIVER_LOADED;
/* initialize existing devices if necessary */
list_for_each(head, &ops->dev_list) {
- snd_seq_device_t *dev = list_entry(head, snd_seq_device_t, list);
+ struct snd_seq_device *dev = list_entry(head, struct snd_seq_device, list);
init_device(dev, ops);
}
- up(&ops->reg_mutex);
+ mutex_unlock(&ops->reg_mutex);
unlock_driver(ops);
snd_seq_autoload_unlock();
/*
* create driver record
*/
-static ops_list_t * create_driver(char *id)
+static struct ops_list * create_driver(char *id)
{
- ops_list_t *ops;
+ struct ops_list *ops;
ops = kmalloc(sizeof(*ops), GFP_KERNEL);
if (ops == NULL)
/* set up driver entry */
strlcpy(ops->id, id, sizeof(ops->id));
- init_MUTEX(&ops->reg_mutex);
+ mutex_init(&ops->reg_mutex);
ops->driver = DRIVER_EMPTY;
INIT_LIST_HEAD(&ops->dev_list);
/* lock this instance */
ops->used = 1;
/* register driver entry */
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_add_tail(&ops->list, &opslist);
num_ops++;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
return ops;
}
int snd_seq_device_unregister_driver(char *id)
{
struct list_head *head;
- ops_list_t *ops;
+ struct ops_list *ops;
ops = find_driver(id, 0);
if (ops == NULL)
return -ENXIO;
if (! (ops->driver & DRIVER_LOADED) ||
(ops->driver & DRIVER_LOCKED)) {
- snd_printk(KERN_ERR "driver_unregister: cannot unload driver '%s': status=%x\n", id, ops->driver);
+ snd_printk(KERN_ERR "driver_unregister: cannot unload driver '%s': status=%x\n",
+ id, ops->driver);
unlock_driver(ops);
return -EBUSY;
}
/* close and release all devices associated with this driver */
- down(&ops->reg_mutex);
+ mutex_lock(&ops->reg_mutex);
ops->driver |= DRIVER_LOCKED; /* do not remove this driver recursively */
list_for_each(head, &ops->dev_list) {
- snd_seq_device_t *dev = list_entry(head, snd_seq_device_t, list);
+ struct snd_seq_device *dev = list_entry(head, struct snd_seq_device, list);
free_device(dev, ops);
}
ops->driver = 0;
if (ops->num_init_devices > 0)
- snd_printk(KERN_ERR "free_driver: init_devices > 0!! (%d)\n", ops->num_init_devices);
- up(&ops->reg_mutex);
+ snd_printk(KERN_ERR "free_driver: init_devices > 0!! (%d)\n",
+ ops->num_init_devices);
+ mutex_unlock(&ops->reg_mutex);
unlock_driver(ops);
{
struct list_head *head;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
head = opslist.next;
while (head != &opslist) {
- ops_list_t *ops = list_entry(head, ops_list_t, list);
+ struct ops_list *ops = list_entry(head, struct ops_list, list);
if (! (ops->driver & DRIVER_LOADED) &&
ops->used == 0 && ops->num_devices == 0) {
head = head->next;
} else
head = head->next;
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
}
/*
* initialize the device - call init_device operator
*/
-static int init_device(snd_seq_device_t *dev, ops_list_t *ops)
+static int init_device(struct snd_seq_device *dev, struct ops_list *ops)
{
if (! (ops->driver & DRIVER_LOADED))
return 0; /* driver is not loaded yet */
if (dev->status != SNDRV_SEQ_DEVICE_FREE)
return 0; /* already initialized */
if (ops->argsize != dev->argsize) {
- snd_printk(KERN_ERR "incompatible device '%s' for plug-in '%s' (%d %d)\n", dev->name, ops->id, ops->argsize, dev->argsize);
+ snd_printk(KERN_ERR "incompatible device '%s' for plug-in '%s' (%d %d)\n",
+ dev->name, ops->id, ops->argsize, dev->argsize);
return -EINVAL;
}
if (ops->ops.init_device(dev) >= 0) {
dev->status = SNDRV_SEQ_DEVICE_REGISTERED;
ops->num_init_devices++;
} else {
- snd_printk(KERN_ERR "init_device failed: %s: %s\n", dev->name, dev->id);
+ snd_printk(KERN_ERR "init_device failed: %s: %s\n",
+ dev->name, dev->id);
}
return 0;
/*
* release the device - call free_device operator
*/
-static int free_device(snd_seq_device_t *dev, ops_list_t *ops)
+static int free_device(struct snd_seq_device *dev, struct ops_list *ops)
{
int result;
if (dev->status != SNDRV_SEQ_DEVICE_REGISTERED)
return 0; /* not registered */
if (ops->argsize != dev->argsize) {
- snd_printk(KERN_ERR "incompatible device '%s' for plug-in '%s' (%d %d)\n", dev->name, ops->id, ops->argsize, dev->argsize);
+ snd_printk(KERN_ERR "incompatible device '%s' for plug-in '%s' (%d %d)\n",
+ dev->name, ops->id, ops->argsize, dev->argsize);
return -EINVAL;
}
if ((result = ops->ops.free_device(dev)) >= 0 || result == -ENXIO) {
dev->driver_data = NULL;
ops->num_init_devices--;
} else {
- snd_printk(KERN_ERR "free_device failed: %s: %s\n", dev->name, dev->id);
+ snd_printk(KERN_ERR "free_device failed: %s: %s\n",
+ dev->name, dev->id);
}
return 0;
/*
* find the matching driver with given id
*/
-static ops_list_t * find_driver(char *id, int create_if_empty)
+static struct ops_list * find_driver(char *id, int create_if_empty)
{
struct list_head *head;
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
list_for_each(head, &opslist) {
- ops_list_t *ops = list_entry(head, ops_list_t, list);
+ struct ops_list *ops = list_entry(head, struct ops_list, list);
if (strcmp(ops->id, id) == 0) {
ops->used++;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
return ops;
}
}
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
if (create_if_empty)
return create_driver(id);
return NULL;
}
-static void unlock_driver(ops_list_t *ops)
+static void unlock_driver(struct ops_list *ops)
{
- down(&ops_mutex);
+ mutex_lock(&ops_mutex);
ops->used--;
- up(&ops_mutex);
+ mutex_unlock(&ops_mutex);
}
static int __init alsa_seq_device_init(void)
{
- info_entry = snd_info_create_module_entry(THIS_MODULE, "drivers", snd_seq_root);
+#ifdef CONFIG_PROC_FS
+ info_entry = snd_info_create_module_entry(THIS_MODULE, "drivers",
+ snd_seq_root);
if (info_entry == NULL)
return -ENOMEM;
info_entry->content = SNDRV_INFO_CONTENT_TEXT;
snd_info_free_entry(info_entry);
return -ENOMEM;
}
+#endif
return 0;
}
static void __exit alsa_seq_device_exit(void)
{
remove_drivers();
+#ifdef CONFIG_PROC_FS
snd_info_unregister(info_entry);
+#endif
if (num_ops)
snd_printk(KERN_ERR "drivers not released (%d)\n", num_ops);
}
git://git.onelab.eu / linux-2.6.git / blobdiff