include/sound/core.h - kernel/msm-4.19 - Gitiles

 #ifndef __SOUND_CORE_H
 #define __SOUND_CORE_H

 /*
  *  Main header file for the ALSA driver
  *  Copyright (c) 1994-2001 by Jaroslav Kysela <perex@suse.cz>
  *
  *
  *   This program is free software; you can redistribute it and/or modify
  *   it under the terms of the GNU General Public License as published by
  *   the Free Software Foundation; either version 2 of the License, or
  *   (at your option) any later version.
  *
  *   This program is distributed in the hope that it will be useful,
  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *   GNU General Public License for more details.
  *
  *   You should have received a copy of the GNU General Public License
  *   along with this program; if not, write to the Free Software
  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  *
  */

 #include <linux/sched.h>		/* wake_up() */
 #include <asm/semaphore.h>		/* struct semaphore */
 #include <linux/rwsem.h>		/* struct rw_semaphore */
 #include <linux/workqueue.h>		/* struct workqueue_struct */
 #include <linux/pm.h>			/* pm_message_t */

 /* Typedef's */
 typedef struct sndrv_interval snd_interval_t;
 typedef enum sndrv_card_type snd_card_type;
 typedef struct sndrv_xferi snd_xferi_t;
 typedef struct sndrv_xfern snd_xfern_t;
 typedef struct sndrv_xferv snd_xferv_t;

 /* forward declarations */
 #ifdef CONFIG_PCI
 struct pci_dev;
 #endif
 #ifdef CONFIG_SBUS
 struct sbus_dev;
 #endif

 /* device allocation stuff */

 #define SNDRV_DEV_TYPE_RANGE_SIZE		0x1000

 typedef enum {
 	SNDRV_DEV_TOPLEVEL =		(0*SNDRV_DEV_TYPE_RANGE_SIZE),
 	SNDRV_DEV_CONTROL,
 	SNDRV_DEV_LOWLEVEL_PRE,
 	SNDRV_DEV_LOWLEVEL_NORMAL =	(1*SNDRV_DEV_TYPE_RANGE_SIZE),
 	SNDRV_DEV_PCM,
 	SNDRV_DEV_RAWMIDI,
 	SNDRV_DEV_TIMER,
 	SNDRV_DEV_SEQUENCER,
 	SNDRV_DEV_HWDEP,
 	SNDRV_DEV_INFO,
 	SNDRV_DEV_BUS,
 	SNDRV_DEV_CODEC,
 	SNDRV_DEV_LOWLEVEL =		(2*SNDRV_DEV_TYPE_RANGE_SIZE)
 } snd_device_type_t;

 typedef enum {
 	SNDRV_DEV_BUILD,
 	SNDRV_DEV_REGISTERED,
 	SNDRV_DEV_DISCONNECTED
 } snd_device_state_t;

 typedef enum {
 	SNDRV_DEV_CMD_PRE = 0,
 	SNDRV_DEV_CMD_NORMAL = 1,
 	SNDRV_DEV_CMD_POST = 2
 } snd_device_cmd_t;

 typedef struct _snd_card snd_card_t;
 typedef struct _snd_device snd_device_t;

 typedef int (snd_dev_free_t)(snd_device_t *device);
 typedef int (snd_dev_register_t)(snd_device_t *device);
 typedef int (snd_dev_disconnect_t)(snd_device_t *device);
 typedef int (snd_dev_unregister_t)(snd_device_t *device);

 typedef struct {
 	snd_dev_free_t *dev_free;
 	snd_dev_register_t *dev_register;
 	snd_dev_disconnect_t *dev_disconnect;
 	snd_dev_unregister_t *dev_unregister;
 } snd_device_ops_t;

 struct _snd_device {
 	struct list_head list;		/* list of registered devices */
 	snd_card_t *card;		/* card which holds this device */
 	snd_device_state_t state;	/* state of the device */
 	snd_device_type_t type;		/* device type */
 	void *device_data;		/* device structure */
 	snd_device_ops_t *ops;		/* operations */
 };

 #define snd_device(n) list_entry(n, snd_device_t, list)

 /* various typedefs */

 typedef struct snd_info_entry snd_info_entry_t;
 typedef struct _snd_pcm snd_pcm_t;
 typedef struct _snd_pcm_str snd_pcm_str_t;
 typedef struct _snd_pcm_substream snd_pcm_substream_t;
 typedef struct _snd_mixer snd_kmixer_t;
 typedef struct _snd_rawmidi snd_rawmidi_t;
 typedef struct _snd_ctl_file snd_ctl_file_t;
 typedef struct _snd_kcontrol snd_kcontrol_t;
 typedef struct _snd_timer snd_timer_t;
 typedef struct _snd_timer_instance snd_timer_instance_t;
 typedef struct _snd_hwdep snd_hwdep_t;
 #if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
 typedef struct _snd_oss_mixer snd_mixer_oss_t;
 #endif

 /* monitor files for graceful shutdown (hotplug) */

 struct snd_monitor_file {
 	struct file *file;
 	struct snd_monitor_file *next;
 };

 struct snd_shutdown_f_ops;	/* define it later in init.c */

 /* main structure for soundcard */

 struct _snd_card {
 	int number;			/* number of soundcard (index to
 								snd_cards) */

 	char id[16];			/* id string of this card */
 	char driver[16];		/* driver name */
 	char shortname[32];		/* short name of this soundcard */
 	char longname[80];		/* name of this soundcard */
 	char mixername[80];		/* mixer name */
 	char components[80];		/* card components delimited with
 								space */
 	struct module *module;		/* top-level module */

 	void *private_data;		/* private data for soundcard */
 	void (*private_free) (snd_card_t *card); /* callback for freeing of
 								private data */
 	struct list_head devices;	/* devices */

 	unsigned int last_numid;	/* last used numeric ID */
 	struct rw_semaphore controls_rwsem;	/* controls list lock */
 	rwlock_t ctl_files_rwlock;	/* ctl_files list lock */
 	int controls_count;		/* count of all controls */
 	int user_ctl_count;		/* count of all user controls */
 	struct list_head controls;	/* all controls for this card */
 	struct list_head ctl_files;	/* active control files */

 	snd_info_entry_t *proc_root;	/* root for soundcard specific files */
 	snd_info_entry_t *proc_id;	/* the card id */
 	struct proc_dir_entry *proc_root_link;	/* number link to real id */

 	struct snd_monitor_file *files; /* all files associated to this card */
 	struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
 								state */
 	spinlock_t files_lock;		/* lock the files for this card */
 	int shutdown;			/* this card is going down */
 	wait_queue_head_t shutdown_sleep;
 	struct work_struct free_workq;	/* for free in workqueue */
 	struct device *dev;
 #ifdef CONFIG_SND_GENERIC_DRIVER
 	struct snd_generic_device *generic_dev;
 #endif

 #ifdef CONFIG_PM
 	int (*pm_suspend)(snd_card_t *card, pm_message_t state);
 	int (*pm_resume)(snd_card_t *card);
 	void *pm_private_data;
 	unsigned int power_state;	/* power state */
 	struct semaphore power_lock;	/* power lock */
 	wait_queue_head_t power_sleep;
 #endif

 #if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
 	snd_mixer_oss_t *mixer_oss;
 	int mixer_oss_change_count;
 #endif
 };

 #ifdef CONFIG_PM
 static inline void snd_power_lock(snd_card_t *card)
 {
 	down(&card->power_lock);
 }

 static inline void snd_power_unlock(snd_card_t *card)
 {
 	up(&card->power_lock);
 }

 static inline unsigned int snd_power_get_state(snd_card_t *card)
 {
 	return card->power_state;
 }

 static inline void snd_power_change_state(snd_card_t *card, unsigned int state)
 {
 	card->power_state = state;
 	wake_up(&card->power_sleep);
 }

 /* init.c */
 int snd_power_wait(snd_card_t *card, unsigned int power_state, struct file *file);

 int snd_card_set_pm_callback(snd_card_t *card,
 			     int (*suspend)(snd_card_t *, pm_message_t),
 			     int (*resume)(snd_card_t *),
 			     void *private_data);
 int snd_card_set_generic_pm_callback(snd_card_t *card,
 				     int (*suspend)(snd_card_t *, pm_message_t),
 				     int (*resume)(snd_card_t *),
 				     void *private_data);
 #define snd_card_set_isa_pm_callback(card,suspend,resume,data) \
 	snd_card_set_generic_pm_callback(card, suspend, resume, data)
 struct pci_dev;
 int snd_card_pci_suspend(struct pci_dev *dev, pm_message_t state);
 int snd_card_pci_resume(struct pci_dev *dev);
 #define SND_PCI_PM_CALLBACKS \
 	.suspend = snd_card_pci_suspend,  .resume = snd_card_pci_resume

 #else /* ! CONFIG_PM */

 #define snd_power_lock(card)		do { (void)(card); } while (0)
 #define snd_power_unlock(card)		do { (void)(card); } while (0)
 static inline int snd_power_wait(snd_card_t *card, unsigned int state, struct file *file) { return 0; }
 #define snd_power_get_state(card)	SNDRV_CTL_POWER_D0
 #define snd_power_change_state(card, state)	do { (void)(card); } while (0)
 #define snd_card_set_pm_callback(card,suspend,resume,data)
 #define snd_card_set_generic_pm_callback(card,suspend,resume,data)
 #define snd_card_set_isa_pm_callback(card,suspend,resume,data)
 #define SND_PCI_PM_CALLBACKS

 #endif /* CONFIG_PM */

 struct _snd_minor {
 	struct list_head list;		/* list of all minors per card */
 	int number;			/* minor number */
 	int device;			/* device number */
 	const char *comment;		/* for /proc/asound/devices */
 	struct file_operations *f_ops;	/* file operations */
 	char name[0];			/* device name (keep at the end of
 								structure) */
 };

 typedef struct _snd_minor snd_minor_t;

 /* sound.c */

 extern int snd_major;
 extern int snd_ecards_limit;

 void snd_request_card(int card);

 int snd_register_device(int type, snd_card_t *card, int dev, snd_minor_t *reg, const char *name);
 int snd_unregister_device(int type, snd_card_t *card, int dev);

 #ifdef CONFIG_SND_OSSEMUL
 int snd_register_oss_device(int type, snd_card_t *card, int dev, snd_minor_t *reg, const char *name);
 int snd_unregister_oss_device(int type, snd_card_t *card, int dev);
 #endif

 int snd_minor_info_init(void);
 int snd_minor_info_done(void);

 /* sound_oss.c */

 #ifdef CONFIG_SND_OSSEMUL
 int snd_minor_info_oss_init(void);
 int snd_minor_info_oss_done(void);
 int snd_oss_init_module(void);
 #else
 #define snd_minor_info_oss_init() /*NOP*/
 #define snd_minor_info_oss_done() /*NOP*/
 #define snd_oss_init_module() 0
 #endif

 /* memory.c */

 int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
 int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);

 /* init.c */

 extern unsigned int snd_cards_lock;
 extern snd_card_t *snd_cards[SNDRV_CARDS];
 extern rwlock_t snd_card_rwlock;
 #if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
 #define SND_MIXER_OSS_NOTIFY_REGISTER	0
 #define SND_MIXER_OSS_NOTIFY_DISCONNECT	1
 #define SND_MIXER_OSS_NOTIFY_FREE	2
 extern int (*snd_mixer_oss_notify_callback)(snd_card_t *card, int cmd);
 #endif

 snd_card_t *snd_card_new(int idx, const char *id,
 			 struct module *module, int extra_size);
 int snd_card_disconnect(snd_card_t *card);
 int snd_card_free(snd_card_t *card);
 int snd_card_free_in_thread(snd_card_t *card);
 int snd_card_register(snd_card_t *card);
 int snd_card_info_init(void);
 int snd_card_info_done(void);
 int snd_component_add(snd_card_t *card, const char *component);
 int snd_card_file_add(snd_card_t *card, struct file *file);
 int snd_card_file_remove(snd_card_t *card, struct file *file);

 #ifndef snd_card_set_dev
 #define snd_card_set_dev(card,devptr) ((card)->dev = (devptr))
 #endif
 /* register a generic device (for ISA, etc) */
 int snd_card_set_generic_dev(snd_card_t *card);

 /* device.c */

 int snd_device_new(snd_card_t *card, snd_device_type_t type,
 		   void *device_data, snd_device_ops_t *ops);
 int snd_device_register(snd_card_t *card, void *device_data);
 int snd_device_register_all(snd_card_t *card);
 int snd_device_disconnect(snd_card_t *card, void *device_data);
 int snd_device_disconnect_all(snd_card_t *card);
 int snd_device_free(snd_card_t *card, void *device_data);
 int snd_device_free_all(snd_card_t *card, snd_device_cmd_t cmd);

 /* isadma.c */

 #ifdef CONFIG_ISA_DMA_API
 #define DMA_MODE_NO_ENABLE	0x0100

 void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
 void snd_dma_disable(unsigned long dma);
 unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
 #endif

 /* misc.c */
 struct resource;
 void release_and_free_resource(struct resource *res);

 #ifdef CONFIG_SND_VERBOSE_PRINTK
 void snd_verbose_printk(const char *file, int line, const char *format, ...)
      __attribute__ ((format (printf, 3, 4)));
 #endif
 #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
 void snd_verbose_printd(const char *file, int line, const char *format, ...)
      __attribute__ ((format (printf, 3, 4)));
 #endif

 /* --- */

 #ifdef CONFIG_SND_VERBOSE_PRINTK
 /**
  * snd_printk - printk wrapper
  * @fmt: format string
  *
  * Works like print() but prints the file and the line of the caller
  * when configured with CONFIG_SND_VERBOSE_PRINTK.
  */
 #define snd_printk(fmt, args...) \
 	snd_verbose_printk(__FILE__, __LINE__, fmt ,##args)
 #else
 #define snd_printk(fmt, args...) \
 	printk(fmt ,##args)
 #endif

 #ifdef CONFIG_SND_DEBUG

 #define __ASTRING__(x) #x

 #ifdef CONFIG_SND_VERBOSE_PRINTK
 /**
  * snd_printd - debug printk
  * @format: format string
  *
  * Compiled only when Works like snd_printk() for debugging purpose.
  * Ignored when CONFIG_SND_DEBUG is not set.
  */
 #define snd_printd(fmt, args...) \
 	snd_verbose_printd(__FILE__, __LINE__, fmt ,##args)
 #else
 #define snd_printd(fmt, args...) \
 	printk(fmt ,##args)
 #endif
 /**
  * snd_assert - run-time assertion macro
  * @expr: expression
  * @args...: the action
  *
  * This macro checks the expression in run-time and invokes the commands
  * given in the rest arguments if the assertion is failed.
  * When CONFIG_SND_DEBUG is not set, the expression is executed but
  * not checked.
  */
 #define snd_assert(expr, args...) do {					\
 	if (unlikely(!(expr))) {					\
 		snd_printk(KERN_ERR "BUG? (%s)\n", __ASTRING__(expr));	\
 		dump_stack();						\
 		args;							\
 	}								\
 } while (0)

 #define snd_BUG() do {				\
 	snd_printk(KERN_ERR "BUG?\n");		\
 	dump_stack();				\
 } while (0)

 #else /* !CONFIG_SND_DEBUG */

 #define snd_printd(fmt, args...)	/* nothing */
 #define snd_assert(expr, args...)	(void)(expr)
 #define snd_BUG()			/* nothing */

 #endif /* CONFIG_SND_DEBUG */

 #ifdef CONFIG_SND_DEBUG_DETECT
 /**
  * snd_printdd - debug printk
  * @format: format string
  *
  * Compiled only when Works like snd_printk() for debugging purpose.
  * Ignored when CONFIG_SND_DEBUG_DETECT is not set.
  */
 #define snd_printdd(format, args...) snd_printk(format, ##args)
 #else
 #define snd_printdd(format, args...) /* nothing */
 #endif


 #define SNDRV_OSS_VERSION         ((3<<16)|(8<<8)|(1<<4)|(0))	/* 3.8.1a */

 /* for easier backward-porting */
 #if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
 #ifndef gameport_set_dev_parent
 #define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
 #define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
 #define gameport_get_port_data(gp) (gp)->port_data
 #endif
 #endif

 #endif /* __SOUND_CORE_H */
	#ifndef __SOUND_CORE_H
	#define __SOUND_CORE_H

	/*
	* Main header file for the ALSA driver
	* Copyright (c) 1994-2001 by Jaroslav Kysela <perex@suse.cz>
	*
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*
	*/

	#include <linux/sched.h> /* wake_up() */
	#include <asm/semaphore.h> /* struct semaphore */
	#include <linux/rwsem.h> /* struct rw_semaphore */
	#include <linux/workqueue.h> /* struct workqueue_struct */
	#include <linux/pm.h> /* pm_message_t */

	/* Typedef's */
	typedef struct sndrv_interval snd_interval_t;
	typedef enum sndrv_card_type snd_card_type;
	typedef struct sndrv_xferi snd_xferi_t;
	typedef struct sndrv_xfern snd_xfern_t;
	typedef struct sndrv_xferv snd_xferv_t;

	/* forward declarations */
	#ifdef CONFIG_PCI
	struct pci_dev;
	#endif
	#ifdef CONFIG_SBUS
	struct sbus_dev;
	#endif

	/* device allocation stuff */

	#define SNDRV_DEV_TYPE_RANGE_SIZE 0x1000

	typedef enum {
	SNDRV_DEV_TOPLEVEL = (0*SNDRV_DEV_TYPE_RANGE_SIZE),
	SNDRV_DEV_CONTROL,
	SNDRV_DEV_LOWLEVEL_PRE,
	SNDRV_DEV_LOWLEVEL_NORMAL = (1*SNDRV_DEV_TYPE_RANGE_SIZE),
	SNDRV_DEV_PCM,
	SNDRV_DEV_RAWMIDI,
	SNDRV_DEV_TIMER,
	SNDRV_DEV_SEQUENCER,
	SNDRV_DEV_HWDEP,
	SNDRV_DEV_INFO,
	SNDRV_DEV_BUS,
	SNDRV_DEV_CODEC,
	SNDRV_DEV_LOWLEVEL = (2*SNDRV_DEV_TYPE_RANGE_SIZE)
	} snd_device_type_t;

	typedef enum {
	SNDRV_DEV_BUILD,
	SNDRV_DEV_REGISTERED,
	SNDRV_DEV_DISCONNECTED
	} snd_device_state_t;

	typedef enum {
	SNDRV_DEV_CMD_PRE = 0,
	SNDRV_DEV_CMD_NORMAL = 1,
	SNDRV_DEV_CMD_POST = 2
	} snd_device_cmd_t;

	typedef struct _snd_card snd_card_t;
	typedef struct _snd_device snd_device_t;

	typedef int (snd_dev_free_t)(snd_device_t *device);
	typedef int (snd_dev_register_t)(snd_device_t *device);
	typedef int (snd_dev_disconnect_t)(snd_device_t *device);
	typedef int (snd_dev_unregister_t)(snd_device_t *device);

	typedef struct {
	snd_dev_free_t *dev_free;
	snd_dev_register_t *dev_register;
	snd_dev_disconnect_t *dev_disconnect;
	snd_dev_unregister_t *dev_unregister;
	} snd_device_ops_t;

	struct _snd_device {
	struct list_head list; /* list of registered devices */
	snd_card_t card; / card which holds this device */
	snd_device_state_t state; /* state of the device */
	snd_device_type_t type; /* device type */
	void device_data; / device structure */
	snd_device_ops_t ops; / operations */
	};

	#define snd_device(n) list_entry(n, snd_device_t, list)

	/* various typedefs */

	typedef struct snd_info_entry snd_info_entry_t;
	typedef struct _snd_pcm snd_pcm_t;
	typedef struct _snd_pcm_str snd_pcm_str_t;
	typedef struct _snd_pcm_substream snd_pcm_substream_t;
	typedef struct _snd_mixer snd_kmixer_t;
	typedef struct _snd_rawmidi snd_rawmidi_t;
	typedef struct _snd_ctl_file snd_ctl_file_t;
	typedef struct _snd_kcontrol snd_kcontrol_t;
	typedef struct _snd_timer snd_timer_t;
	typedef struct _snd_timer_instance snd_timer_instance_t;
	typedef struct _snd_hwdep snd_hwdep_t;
	#if defined(CONFIG_SND_MIXER_OSS) \|\| defined(CONFIG_SND_MIXER_OSS_MODULE)
	typedef struct _snd_oss_mixer snd_mixer_oss_t;
	#endif

	/* monitor files for graceful shutdown (hotplug) */

	struct snd_monitor_file {
	struct file *file;
	struct snd_monitor_file *next;
	};

	struct snd_shutdown_f_ops; /* define it later in init.c */

	/* main structure for soundcard */

	struct _snd_card {
	int number; /* number of soundcard (index to
	snd_cards) */

	char id[16]; /* id string of this card */
	char driver[16]; /* driver name */
	char shortname[32]; /* short name of this soundcard */
	char longname[80]; /* name of this soundcard */
	char mixername[80]; /* mixer name */
	char components[80]; /* card components delimited with
	space */
	struct module module; / top-level module */

	void private_data; / private data for soundcard */
	void (private_free) (snd_card_t card); /* callback for freeing of
	private data */
	struct list_head devices; /* devices */

	unsigned int last_numid; /* last used numeric ID */
	struct rw_semaphore controls_rwsem; /* controls list lock */
	rwlock_t ctl_files_rwlock; /* ctl_files list lock */
	int controls_count; /* count of all controls */
	int user_ctl_count; /* count of all user controls */
	struct list_head controls; /* all controls for this card */
	struct list_head ctl_files; /* active control files */

	snd_info_entry_t proc_root; / root for soundcard specific files */
	snd_info_entry_t proc_id; / the card id */
	struct proc_dir_entry proc_root_link; / number link to real id */

	struct snd_monitor_file files; / all files associated to this card */
	struct snd_shutdown_f_ops s_f_ops; / file operations in the shutdown
	state */
	spinlock_t files_lock; /* lock the files for this card */
	int shutdown; /* this card is going down */
	wait_queue_head_t shutdown_sleep;
	struct work_struct free_workq; /* for free in workqueue */
	struct device *dev;
	#ifdef CONFIG_SND_GENERIC_DRIVER
	struct snd_generic_device *generic_dev;
	#endif

	#ifdef CONFIG_PM
	int (pm_suspend)(snd_card_t card, pm_message_t state);
	int (pm_resume)(snd_card_t card);
	void *pm_private_data;
	unsigned int power_state; /* power state */
	struct semaphore power_lock; /* power lock */
	wait_queue_head_t power_sleep;
	#endif

	#if defined(CONFIG_SND_MIXER_OSS) \|\| defined(CONFIG_SND_MIXER_OSS_MODULE)
	snd_mixer_oss_t *mixer_oss;
	int mixer_oss_change_count;
	#endif
	};

	#ifdef CONFIG_PM
	static inline void snd_power_lock(snd_card_t *card)
	{
	down(&card->power_lock);
	}

	static inline void snd_power_unlock(snd_card_t *card)
	{
	up(&card->power_lock);
	}

	static inline unsigned int snd_power_get_state(snd_card_t *card)
	{
	return card->power_state;
	}

	static inline void snd_power_change_state(snd_card_t *card, unsigned int state)
	{
	card->power_state = state;
	wake_up(&card->power_sleep);
	}

	/* init.c */
	int snd_power_wait(snd_card_t card, unsigned int power_state, struct file file);

	int snd_card_set_pm_callback(snd_card_t *card,
	int (suspend)(snd_card_t , pm_message_t),
	int (resume)(snd_card_t ),
	void *private_data);
	int snd_card_set_generic_pm_callback(snd_card_t *card,
	int (suspend)(snd_card_t , pm_message_t),
	int (resume)(snd_card_t ),
	void *private_data);
	#define snd_card_set_isa_pm_callback(card,suspend,resume,data) \
	snd_card_set_generic_pm_callback(card, suspend, resume, data)
	struct pci_dev;
	int snd_card_pci_suspend(struct pci_dev *dev, pm_message_t state);
	int snd_card_pci_resume(struct pci_dev *dev);
	#define SND_PCI_PM_CALLBACKS \
	.suspend = snd_card_pci_suspend, .resume = snd_card_pci_resume

	#else /* ! CONFIG_PM */

	#define snd_power_lock(card) do { (void)(card); } while (0)
	#define snd_power_unlock(card) do { (void)(card); } while (0)
	static inline int snd_power_wait(snd_card_t card, unsigned int state, struct file file) { return 0; }
	#define snd_power_get_state(card) SNDRV_CTL_POWER_D0
	#define snd_power_change_state(card, state) do { (void)(card); } while (0)
	#define snd_card_set_pm_callback(card,suspend,resume,data)
	#define snd_card_set_generic_pm_callback(card,suspend,resume,data)
	#define snd_card_set_isa_pm_callback(card,suspend,resume,data)
	#define SND_PCI_PM_CALLBACKS

	#endif /* CONFIG_PM */

	struct _snd_minor {
	struct list_head list; /* list of all minors per card */
	int number; /* minor number */
	int device; /* device number */
	const char comment; / for /proc/asound/devices */
	struct file_operations f_ops; / file operations */
	char name[0]; /* device name (keep at the end of
	structure) */
	};

	typedef struct _snd_minor snd_minor_t;

	/* sound.c */

	extern int snd_major;
	extern int snd_ecards_limit;

	void snd_request_card(int card);

	int snd_register_device(int type, snd_card_t card, int dev, snd_minor_t reg, const char *name);
	int snd_unregister_device(int type, snd_card_t *card, int dev);

	#ifdef CONFIG_SND_OSSEMUL
	int snd_register_oss_device(int type, snd_card_t card, int dev, snd_minor_t reg, const char *name);
	int snd_unregister_oss_device(int type, snd_card_t *card, int dev);
	#endif

	int snd_minor_info_init(void);
	int snd_minor_info_done(void);

	/* sound_oss.c */

	#ifdef CONFIG_SND_OSSEMUL
	int snd_minor_info_oss_init(void);
	int snd_minor_info_oss_done(void);
	int snd_oss_init_module(void);
	#else
	#define snd_minor_info_oss_init() /NOP/
	#define snd_minor_info_oss_done() /NOP/
	#define snd_oss_init_module() 0
	#endif

	/* memory.c */

	int copy_to_user_fromio(void __user dst, const volatile void __iomem src, size_t count);
	int copy_from_user_toio(volatile void __iomem dst, const void __user src, size_t count);

	/* init.c */

	extern unsigned int snd_cards_lock;
	extern snd_card_t *snd_cards[SNDRV_CARDS];
	extern rwlock_t snd_card_rwlock;
	#if defined(CONFIG_SND_MIXER_OSS) \|\| defined(CONFIG_SND_MIXER_OSS_MODULE)
	#define SND_MIXER_OSS_NOTIFY_REGISTER 0
	#define SND_MIXER_OSS_NOTIFY_DISCONNECT 1
	#define SND_MIXER_OSS_NOTIFY_FREE 2
	extern int (snd_mixer_oss_notify_callback)(snd_card_t card, int cmd);
	#endif

	snd_card_t snd_card_new(int idx, const char id,
	struct module *module, int extra_size);
	int snd_card_disconnect(snd_card_t *card);
	int snd_card_free(snd_card_t *card);
	int snd_card_free_in_thread(snd_card_t *card);
	int snd_card_register(snd_card_t *card);
	int snd_card_info_init(void);
	int snd_card_info_done(void);
	int snd_component_add(snd_card_t card, const char component);
	int snd_card_file_add(snd_card_t card, struct file file);
	int snd_card_file_remove(snd_card_t card, struct file file);

	#ifndef snd_card_set_dev
	#define snd_card_set_dev(card,devptr) ((card)->dev = (devptr))
	#endif
	/* register a generic device (for ISA, etc) */
	int snd_card_set_generic_dev(snd_card_t *card);

	/* device.c */

	int snd_device_new(snd_card_t *card, snd_device_type_t type,
	void device_data, snd_device_ops_t ops);
	int snd_device_register(snd_card_t card, void device_data);
	int snd_device_register_all(snd_card_t *card);
	int snd_device_disconnect(snd_card_t card, void device_data);
	int snd_device_disconnect_all(snd_card_t *card);
	int snd_device_free(snd_card_t card, void device_data);
	int snd_device_free_all(snd_card_t *card, snd_device_cmd_t cmd);

	/* isadma.c */

	#ifdef CONFIG_ISA_DMA_API
	#define DMA_MODE_NO_ENABLE 0x0100

	void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
	void snd_dma_disable(unsigned long dma);
	unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
	#endif

	/* misc.c */
	struct resource;
	void release_and_free_resource(struct resource *res);

	#ifdef CONFIG_SND_VERBOSE_PRINTK
	void snd_verbose_printk(const char file, int line, const char format, ...)
	__attribute__ ((format (printf, 3, 4)));
	#endif
	#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
	void snd_verbose_printd(const char file, int line, const char format, ...)
	__attribute__ ((format (printf, 3, 4)));
	#endif

	/* --- */

	#ifdef CONFIG_SND_VERBOSE_PRINTK
	/**
	* snd_printk - printk wrapper
	* @fmt: format string
	*
	* Works like print() but prints the file and the line of the caller
	* when configured with CONFIG_SND_VERBOSE_PRINTK.
	*/
	#define snd_printk(fmt, args...) \
	snd_verbose_printk(__FILE__, __LINE__, fmt ,##args)
	#else
	#define snd_printk(fmt, args...) \
	printk(fmt ,##args)
	#endif

	#ifdef CONFIG_SND_DEBUG

	#define __ASTRING__(x) #x

	#ifdef CONFIG_SND_VERBOSE_PRINTK
	/**
	* snd_printd - debug printk
	* @format: format string
	*
	* Compiled only when Works like snd_printk() for debugging purpose.
	* Ignored when CONFIG_SND_DEBUG is not set.
	*/
	#define snd_printd(fmt, args...) \
	snd_verbose_printd(__FILE__, __LINE__, fmt ,##args)
	#else
	#define snd_printd(fmt, args...) \
	printk(fmt ,##args)
	#endif
	/**
	* snd_assert - run-time assertion macro
	* @expr: expression
	* @args...: the action
	*
	* This macro checks the expression in run-time and invokes the commands
	* given in the rest arguments if the assertion is failed.
	* When CONFIG_SND_DEBUG is not set, the expression is executed but
	* not checked.
	*/
	#define snd_assert(expr, args...) do { \
	if (unlikely(!(expr))) { \
	snd_printk(KERN_ERR "BUG? (%s)\n", __ASTRING__(expr)); \
	dump_stack(); \
	args; \
	} \
	} while (0)

	#define snd_BUG() do { \
	snd_printk(KERN_ERR "BUG?\n"); \
	dump_stack(); \
	} while (0)

	#else /* !CONFIG_SND_DEBUG */

	#define snd_printd(fmt, args...) /* nothing */
	#define snd_assert(expr, args...) (void)(expr)
	#define snd_BUG() /* nothing */

	#endif /* CONFIG_SND_DEBUG */

	#ifdef CONFIG_SND_DEBUG_DETECT
	/**
	* snd_printdd - debug printk
	* @format: format string
	*
	* Compiled only when Works like snd_printk() for debugging purpose.
	* Ignored when CONFIG_SND_DEBUG_DETECT is not set.
	*/
	#define snd_printdd(format, args...) snd_printk(format, ##args)
	#else
	#define snd_printdd(format, args...) /* nothing */
	#endif


	#define SNDRV_OSS_VERSION ((3<<16)\|(8<<8)\|(1<<4)\|(0)) /* 3.8.1a */

	/* for easier backward-porting */
	#if defined(CONFIG_GAMEPORT) \|\| defined(CONFIG_GAMEPORT_MODULE)
	#ifndef gameport_set_dev_parent
	#define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
	#define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
	#define gameport_get_port_data(gp) (gp)->port_data
	#endif
	#endif

	#endif /* __SOUND_CORE_H */