#include <linux/init.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/file.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/ctype.h>
#include <linux/pm.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/info.h>
Go to the source code of this file.
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| | EXPORT_SYMBOL (snd_cards) |
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| | module_param_array (slots, charp, NULL, 0444) |
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| | MODULE_PARM_DESC (slots,"Module names assigned to the slots.") |
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| int | snd_card_create (int idx, const char *xid, struct module *module, int extra_size, struct snd_card **card_ret) |
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| | EXPORT_SYMBOL (snd_card_create) |
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| int | snd_card_locked (int card) |
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| int | snd_card_disconnect (struct snd_card *card) |
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| | EXPORT_SYMBOL (snd_card_disconnect) |
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| void | snd_card_unref (struct snd_card *card) |
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| | EXPORT_SYMBOL (snd_card_unref) |
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| int | snd_card_free_when_closed (struct snd_card *card) |
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| | EXPORT_SYMBOL (snd_card_free_when_closed) |
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| int | snd_card_free (struct snd_card *card) |
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| | EXPORT_SYMBOL (snd_card_free) |
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| void | snd_card_set_id (struct snd_card *card, const char *nid) |
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| | EXPORT_SYMBOL (snd_card_set_id) |
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| int | snd_card_register (struct snd_card *card) |
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| | EXPORT_SYMBOL (snd_card_register) |
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| int | snd_component_add (struct snd_card *card, const char *component) |
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| | EXPORT_SYMBOL (snd_component_add) |
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| int | snd_card_file_add (struct snd_card *card, struct file *file) |
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| | EXPORT_SYMBOL (snd_card_file_add) |
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| int | snd_card_file_remove (struct snd_card *card, struct file *file) |
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| | EXPORT_SYMBOL (snd_card_file_remove) |
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| #define init_info_for_card |
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slots |
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charp |
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NULL |
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0444 |
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| MODULE_PARM_DESC |
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slots |
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"Module names assigned to the slots." |
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snd_card_create - create and initialize a soundcard structure : card index (address) [0 ... (SNDRV_CARDS-1)] : card identification (ASCII string) : top level module for locking : allocate this extra size after the main soundcard structure : the pointer to store the created card instance
Creates and initializes a soundcard structure.
The function allocates snd_card instance via kzalloc with the given space for the driver to use freely. The allocated struct is stored in the given card_ret pointer.
Returns zero if successful or a negative error code.
Definition at line 149 of file init.c.
snd_card_disconnect - disconnect all APIs from the file-operations (user space) : soundcard structure
Disconnects all APIs from the file-operations (user space).
Returns zero, otherwise a negative error code.
Note: The current implementation replaces all active file->f_op with special dummy file operations (they do nothing except release).
Definition at line 345 of file init.c.
| int snd_card_locked |
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card | ) |
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snd_card_register - register the soundcard : soundcard structure
This function registers all the devices assigned to the soundcard. Until calling this, the ALSA control interface is blocked from the external accesses. Thus, you should call this function at the end of the initialization of the card.
Returns zero otherwise a negative error code if the registration failed.
Definition at line 682 of file init.c.
snd_card_set_id - set card identification name : soundcard structure : new identification string
This function sets the card identification and checks for name collisions.
Definition at line 608 of file init.c.
snd_card_unref - release the reference counter : the card instance
Decrements the reference counter. When it reaches to zero, wake up the sleeper and call the destructor if needed.
Definition at line 457 of file init.c.
snd_component_add - add a component string : soundcard structure : the component id string
This function adds the component id string to the supported list. The component can be referred from the alsa-lib.
Returns zero otherwise a negative error code.
Definition at line 855 of file init.c.
1.8.2