[net-next-2.6.git] / include / 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@perex.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/module.h>
#include <linux/sched.h>		/* wake_up() */
#include <linux/mutex.h>		/* struct mutex */
#include <linux/rwsem.h>		/* struct rw_semaphore */
#include <linux/pm.h>			/* pm_message_t */
#include <linux/device.h>
#include <linux/stringify.h>

/* number of supported soundcards */
#ifdef CONFIG_SND_DYNAMIC_MINORS
#define SNDRV_CARDS 32
#else
#define SNDRV_CARDS 8		/* don't change - minor numbers */
#endif

#define CONFIG_SND_MAJOR	116	/* standard configuration */

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

/* device allocation stuff */

#define SNDRV_DEV_TYPE_RANGE_SIZE		0x1000

typedef int __bitwise snd_device_type_t;
#define	SNDRV_DEV_TOPLEVEL	((__force snd_device_type_t) 0)
#define	SNDRV_DEV_CONTROL	((__force snd_device_type_t) 1)
#define	SNDRV_DEV_LOWLEVEL_PRE	((__force snd_device_type_t) 2)
#define	SNDRV_DEV_LOWLEVEL_NORMAL ((__force snd_device_type_t) 0x1000)
#define	SNDRV_DEV_PCM		((__force snd_device_type_t) 0x1001)
#define	SNDRV_DEV_RAWMIDI	((__force snd_device_type_t) 0x1002)
#define	SNDRV_DEV_TIMER		((__force snd_device_type_t) 0x1003)
#define	SNDRV_DEV_SEQUENCER	((__force snd_device_type_t) 0x1004)
#define	SNDRV_DEV_HWDEP		((__force snd_device_type_t) 0x1005)
#define	SNDRV_DEV_INFO		((__force snd_device_type_t) 0x1006)
#define	SNDRV_DEV_BUS		((__force snd_device_type_t) 0x1007)
#define	SNDRV_DEV_CODEC		((__force snd_device_type_t) 0x1008)
#define	SNDRV_DEV_JACK          ((__force snd_device_type_t) 0x1009)
#define	SNDRV_DEV_LOWLEVEL	((__force snd_device_type_t) 0x2000)

typedef int __bitwise snd_device_state_t;
#define	SNDRV_DEV_BUILD		((__force snd_device_state_t) 0)
#define	SNDRV_DEV_REGISTERED	((__force snd_device_state_t) 1)
#define	SNDRV_DEV_DISCONNECTED	((__force snd_device_state_t) 2)

typedef int __bitwise snd_device_cmd_t;
#define	SNDRV_DEV_CMD_PRE	((__force snd_device_cmd_t) 0)
#define	SNDRV_DEV_CMD_NORMAL	((__force snd_device_cmd_t) 1)	
#define	SNDRV_DEV_CMD_POST	((__force snd_device_cmd_t) 2)

struct snd_device;

struct snd_device_ops {
	int (*dev_free)(struct snd_device *dev);
	int (*dev_register)(struct snd_device *dev);
	int (*dev_disconnect)(struct snd_device *dev);
};

struct snd_device {
	struct list_head list;		/* list of registered devices */
	struct snd_card *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 */
	struct snd_device_ops *ops;	/* operations */
};

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

/* 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[128];		/* card components delimited with
								space */
	struct module *module;		/* top-level module */

	void *private_data;		/* private data for soundcard */
	void (*private_free) (struct snd_card *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 */

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

	struct list_head files_list;	/* 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 */
	int free_on_last_close;		/* free in context of file_release */
	wait_queue_head_t shutdown_sleep;
	struct device *dev;		/* device assigned to this card */
#ifndef CONFIG_SYSFS_DEPRECATED
	struct device *card_dev;	/* cardX object for sysfs */
#endif

#ifdef CONFIG_PM
	unsigned int power_state;	/* power state */
	struct mutex power_lock;	/* power lock */
	wait_queue_head_t power_sleep;
#endif

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

#ifdef CONFIG_PM
static inline void snd_power_lock(struct snd_card *card)
{
	mutex_lock(&card->power_lock);
}

static inline void snd_power_unlock(struct snd_card *card)
{
	mutex_unlock(&card->power_lock);
}

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

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

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

#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(struct snd_card *card, unsigned int state) { return 0; }
#define snd_power_get_state(card)	SNDRV_CTL_POWER_D0
#define snd_power_change_state(card, state)	do { (void)(card); } while (0)

#endif /* CONFIG_PM */

struct snd_minor {
	int type;			/* SNDRV_DEVICE_TYPE_XXX */
	int card;			/* card number */
	int device;			/* device number */
	const struct file_operations *f_ops;	/* file operations */
	void *private_data;		/* private data for f_ops->open */
	struct device *dev;		/* device for sysfs */
};

/* return a device pointer linked to each sound device as a parent */
static inline struct device *snd_card_get_device_link(struct snd_card *card)
{
#ifdef CONFIG_SYSFS_DEPRECATED
	return card ? card->dev : NULL;
#else
	return card ? card->card_dev : NULL;
#endif
}

/* sound.c */

extern int snd_major;
extern int snd_ecards_limit;
extern struct class *sound_class;

void snd_request_card(int card);

int snd_register_device_for_dev(int type, struct snd_card *card,
				int dev,
				const struct file_operations *f_ops,
				void *private_data,
				const char *name,
				struct device *device);

/**
 * snd_register_device - Register the ALSA device file for the card
 * @type: the device type, SNDRV_DEVICE_TYPE_XXX
 * @card: the card instance
 * @dev: the device index
 * @f_ops: the file operations
 * @private_data: user pointer for f_ops->open()
 * @name: the device file name
 *
 * Registers an ALSA device file for the given card.
 * The operators have to be set in reg parameter.
 *
 * This function uses the card's device pointer to link to the
 * correct &struct device.
 *
 * Returns zero if successful, or a negative error code on failure.
 */
static inline int snd_register_device(int type, struct snd_card *card, int dev,
				      const struct file_operations *f_ops,
				      void *private_data,
				      const char *name)
{
	return snd_register_device_for_dev(type, card, dev, f_ops,
					   private_data, name,
					   snd_card_get_device_link(card));
}

int snd_unregister_device(int type, struct snd_card *card, int dev);
void *snd_lookup_minor_data(unsigned int minor, int type);
int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
			      struct device_attribute *attr);

#ifdef CONFIG_SND_OSSEMUL
int snd_register_oss_device(int type, struct snd_card *card, int dev,
			    const struct file_operations *f_ops, void *private_data,
			    const char *name);
int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
void *snd_lookup_oss_minor_data(unsigned int minor, int type);
#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);
#else
static inline int snd_minor_info_oss_init(void) { return 0; }
static inline int snd_minor_info_oss_done(void) { return 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 struct snd_card *snd_cards[SNDRV_CARDS];
int snd_card_locked(int card);
#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)(struct snd_card *card, int cmd);
#endif

int snd_card_create(int idx, const char *id,
		    struct module *module, int extra_size,
		    struct snd_card **card_ret);

int snd_card_disconnect(struct snd_card *card);
int snd_card_free(struct snd_card *card);
int snd_card_free_when_closed(struct snd_card *card);
void snd_card_set_id(struct snd_card *card, const char *id);
int snd_card_register(struct snd_card *card);
int snd_card_info_init(void);
int snd_card_info_done(void);
int snd_component_add(struct snd_card *card, const char *component);
int snd_card_file_add(struct snd_card *card, struct file *file);
int snd_card_file_remove(struct snd_card *card, struct file *file);

#define snd_card_set_dev(card, devptr) ((card)->dev = (devptr))

/* device.c */

int snd_device_new(struct snd_card *card, snd_device_type_t type,
		   void *device_data, struct snd_device_ops *ops);
int snd_device_register(struct snd_card *card, void *device_data);
int snd_device_register_all(struct snd_card *card);
int snd_device_disconnect(struct snd_card *card, void *device_data);
int snd_device_disconnect_all(struct snd_card *card);
int snd_device_free(struct snd_card *card, void *device_data);
int snd_device_free_all(struct snd_card *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);

/* --- */

#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
void __snd_printk(unsigned int level, const char *file, int line,
		  const char *format, ...)
     __attribute__ ((format (printf, 4, 5)));
#else
#define __snd_printk(level, file, line, format, args...) \
	printk(format, ##args)
#endif

/**
 * snd_printk - printk wrapper
 * @fmt: format string
 *
 * Works like printk() but prints the file and the line of the caller
 * when configured with CONFIG_SND_VERBOSE_PRINTK.
 */
#define snd_printk(fmt, args...) \
	__snd_printk(0, __FILE__, __LINE__, fmt, ##args)

#ifdef CONFIG_SND_DEBUG
/**
 * snd_printd - debug printk
 * @fmt: format string
 *
 * Works like snd_printk() for debugging purposes.
 * Ignored when CONFIG_SND_DEBUG is not set.
 */
#define snd_printd(fmt, args...) \
	__snd_printk(1, __FILE__, __LINE__, fmt, ##args)

/**
 * snd_BUG - give a BUG warning message and stack trace
 *
 * Calls WARN() if CONFIG_SND_DEBUG is set.
 * Ignored when CONFIG_SND_DEBUG is not set.
 */
#define snd_BUG()		WARN(1, "BUG?\n")

/**
 * snd_BUG_ON - debugging check macro
 * @cond: condition to evaluate
 *
 * When CONFIG_SND_DEBUG is set, this macro evaluates the given condition,
 * and call WARN() and returns the value if it's non-zero.
 * 
 * When CONFIG_SND_DEBUG is not set, this just returns zero, and the given
 * condition is ignored.
 *
 * NOTE: the argument won't be evaluated at all when CONFIG_SND_DEBUG=n.
 * Thus, don't put any statement that influences on the code behavior,
 * such as pre/post increment, to the argument of this macro.
 * If you want to evaluate and give a warning, use standard WARN_ON().
 */
#define snd_BUG_ON(cond)	WARN((cond), "BUG? (%s)\n", __stringify(cond))

#else /* !CONFIG_SND_DEBUG */

#define snd_printd(fmt, args...)	do { } while (0)
#define snd_BUG()			do { } while (0)
static inline int __snd_bug_on(int cond)
{
	return 0;
}
#define snd_BUG_ON(cond)	__snd_bug_on(0 && (cond))  /* always false */

#endif /* CONFIG_SND_DEBUG */

#ifdef CONFIG_SND_DEBUG_VERBOSE
/**
 * snd_printdd - debug printk
 * @format: format string
 *
 * Works like snd_printk() for debugging purposes.
 * Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
 */
#define snd_printdd(format, args...) \
	__snd_printk(2, __FILE__, __LINE__, format, ##args)
#else
#define snd_printdd(format, args...)	do { } while (0)
#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)
#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

/* PCI quirk list helper */
struct snd_pci_quirk {
	unsigned short subvendor;	/* PCI subvendor ID */
	unsigned short subdevice;	/* PCI subdevice ID */
	unsigned short subdevice_mask;	/* bitmask to match */
	int value;			/* value */
#ifdef CONFIG_SND_DEBUG_VERBOSE
	const char *name;		/* name of the device (optional) */
#endif
};

#define _SND_PCI_QUIRK_ID_MASK(vend, mask, dev)	\
	.subvendor = (vend), .subdevice = (dev), .subdevice_mask = (mask)
#define _SND_PCI_QUIRK_ID(vend, dev) \
	_SND_PCI_QUIRK_ID_MASK(vend, 0xffff, dev)
#define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
#ifdef CONFIG_SND_DEBUG_VERBOSE
#define SND_PCI_QUIRK(vend,dev,xname,val) \
	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
#define SND_PCI_QUIRK_VENDOR(vend, xname, val)			\
	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val), .name = (xname)}
#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val)			\
	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev),			\
			.value = (val), .name = (xname)}
#else
#define SND_PCI_QUIRK(vend,dev,xname,val) \
	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}
#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val)			\
	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), .value = (val)}
#define SND_PCI_QUIRK_VENDOR(vend, xname, val)			\
	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val)}
#endif

const struct snd_pci_quirk *
snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list);

const struct snd_pci_quirk *
snd_pci_quirk_lookup_id(u16 vendor, u16 device,
			const struct snd_pci_quirk *list);

#endif /* __SOUND_CORE_H */
Commit	Line	Data
1da177e4 LT	1	#ifndef __SOUND_CORE_H
	2	#define __SOUND_CORE_H
	3
	4	/*
	5	* Main header file for the ALSA driver
c1017a4c	6	* Copyright (c) 1994-2001 by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	7	*
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	22	*
	23	*/
	24
9004acc7	25	#include <linux/module.h>
1da177e4	26	#include <linux/sched.h> /* wake_up() */
1a60d4c5	27	#include <linux/mutex.h> /* struct mutex */
1da177e4	28	#include <linux/rwsem.h> /* struct rw_semaphore */
1da177e4	29	#include <linux/pm.h> /* pm_message_t */
9d19f48c	30	#include <linux/device.h>
5ef03460	31	#include <linux/stringify.h>
1da177e4	32
9004acc7 TI	33	/* number of supported soundcards */
	34	#ifdef CONFIG_SND_DYNAMIC_MINORS
	35	#define SNDRV_CARDS 32
	36	#else
	37	#define SNDRV_CARDS 8 /* don't change - minor numbers */
	38	#endif
	39
	40	#define CONFIG_SND_MAJOR 116 /* standard configuration */
	41
1da177e4 LT	42	/* forward declarations */
	43	#ifdef CONFIG_PCI
	44	struct pci_dev;
	45	#endif
1da177e4 LT	46
	47	/* device allocation stuff */
	48
	49	#define SNDRV_DEV_TYPE_RANGE_SIZE 0x1000
	50
512bbd6a TI	51	typedef int __bitwise snd_device_type_t;
	52	#define SNDRV_DEV_TOPLEVEL ((__force snd_device_type_t) 0)
	53	#define SNDRV_DEV_CONTROL ((__force snd_device_type_t) 1)
	54	#define SNDRV_DEV_LOWLEVEL_PRE ((__force snd_device_type_t) 2)
	55	#define SNDRV_DEV_LOWLEVEL_NORMAL ((__force snd_device_type_t) 0x1000)
	56	#define SNDRV_DEV_PCM ((__force snd_device_type_t) 0x1001)
	57	#define SNDRV_DEV_RAWMIDI ((__force snd_device_type_t) 0x1002)
	58	#define SNDRV_DEV_TIMER ((__force snd_device_type_t) 0x1003)
	59	#define SNDRV_DEV_SEQUENCER ((__force snd_device_type_t) 0x1004)
	60	#define SNDRV_DEV_HWDEP ((__force snd_device_type_t) 0x1005)
	61	#define SNDRV_DEV_INFO ((__force snd_device_type_t) 0x1006)
	62	#define SNDRV_DEV_BUS ((__force snd_device_type_t) 0x1007)
	63	#define SNDRV_DEV_CODEC ((__force snd_device_type_t) 0x1008)
e76d8cea	64	#define SNDRV_DEV_JACK ((__force snd_device_type_t) 0x1009)
512bbd6a TI	65	#define SNDRV_DEV_LOWLEVEL ((__force snd_device_type_t) 0x2000)
	66
	67	typedef int __bitwise snd_device_state_t;
	68	#define SNDRV_DEV_BUILD ((__force snd_device_state_t) 0)
	69	#define SNDRV_DEV_REGISTERED ((__force snd_device_state_t) 1)
	70	#define SNDRV_DEV_DISCONNECTED ((__force snd_device_state_t) 2)
	71
	72	typedef int __bitwise snd_device_cmd_t;
	73	#define SNDRV_DEV_CMD_PRE ((__force snd_device_cmd_t) 0)
	74	#define SNDRV_DEV_CMD_NORMAL ((__force snd_device_cmd_t) 1)
	75	#define SNDRV_DEV_CMD_POST ((__force snd_device_cmd_t) 2)
	76
	77	struct snd_device;
	78
	79	struct snd_device_ops {
	80	int (dev_free)(struct snd_device dev);
	81	int (dev_register)(struct snd_device dev);
	82	int (dev_disconnect)(struct snd_device dev);
512bbd6a TI	83	};
	84
	85	struct snd_device {
1da177e4	86	struct list_head list; /* list of registered devices */
512bbd6a	87	struct snd_card card; / card which holds this device */
1da177e4 LT	88	snd_device_state_t state; /* state of the device */
	89	snd_device_type_t type; /* device type */
	90	void device_data; / device structure */
512bbd6a	91	struct snd_device_ops ops; / operations */
1da177e4 LT	92	};
1da177e4 LT	93
512bbd6a	94	#define snd_device(n) list_entry(n, struct snd_device, list)
1da177e4	95
1da177e4 LT	96	/* main structure for soundcard */
1da177e4 LT	97
512bbd6a	98	struct snd_card {
d5750f67 HK	99	int number; /* number of soundcard (index to
d5750f67 HK	100	snd_cards) */
1da177e4 LT	101
	102	char id[16]; /* id string of this card */
	103	char driver[16]; /* driver name */
	104	char shortname[32]; /* short name of this soundcard */
	105	char longname[80]; /* name of this soundcard */
	106	char mixername[80]; /* mixer name */
ff33f230	107	char components[128]; /* card components delimited with
d5750f67	108	space */
1da177e4 LT	109	struct module module; / top-level module */
	110
	111	void private_data; / private data for soundcard */
512bbd6a	112	void (private_free) (struct snd_card card); /* callback for freeing of
d5750f67	113	private data */
1da177e4 LT	114	struct list_head devices; /* devices */
	115
	116	unsigned int last_numid; /* last used numeric ID */
	117	struct rw_semaphore controls_rwsem; /* controls list lock */
	118	rwlock_t ctl_files_rwlock; /* ctl_files list lock */
	119	int controls_count; /* count of all controls */
	120	int user_ctl_count; /* count of all user controls */
	121	struct list_head controls; /* all controls for this card */
	122	struct list_head ctl_files; /* active control files */
	123
512bbd6a TI	124	struct snd_info_entry proc_root; / root for soundcard specific files */
512bbd6a TI	125	struct snd_info_entry proc_id; / the card id */
1da177e4 LT	126	struct proc_dir_entry proc_root_link; / number link to real id */
1da177e4 LT	127
118dd6bf	128	struct list_head files_list; /* all files associated to this card */
d5750f67 HK	129	struct snd_shutdown_f_ops s_f_ops; / file operations in the shutdown
d5750f67 HK	130	state */
1da177e4 LT	131	spinlock_t files_lock; /* lock the files for this card */
1da177e4 LT	132	int shutdown; /* this card is going down */
c461482c	133	int free_on_last_close; /* free in context of file_release */
1da177e4	134	wait_queue_head_t shutdown_sleep;
7d2aae1e TI	135	struct device dev; / device assigned to this card */
	136	#ifndef CONFIG_SYSFS_DEPRECATED
	137	struct device card_dev; / cardX object for sysfs */
	138	#endif
1da177e4 LT	139
1da177e4 LT	140	#ifdef CONFIG_PM
1da177e4	141	unsigned int power_state; /* power state */
1a60d4c5	142	struct mutex power_lock; /* power lock */
1da177e4	143	wait_queue_head_t power_sleep;
1da177e4 LT	144	#endif
	145
	146	#if defined(CONFIG_SND_MIXER_OSS) \|\| defined(CONFIG_SND_MIXER_OSS_MODULE)
512bbd6a	147	struct snd_mixer_oss *mixer_oss;
1da177e4 LT	148	int mixer_oss_change_count;
	149	#endif
	150	};
	151
	152	#ifdef CONFIG_PM
512bbd6a	153	static inline void snd_power_lock(struct snd_card *card)
1da177e4	154	{
1a60d4c5	155	mutex_lock(&card->power_lock);
1da177e4 LT	156	}
1da177e4 LT	157
512bbd6a	158	static inline void snd_power_unlock(struct snd_card *card)
1da177e4	159	{
1a60d4c5	160	mutex_unlock(&card->power_lock);
1da177e4 LT	161	}
1da177e4 LT	162
512bbd6a	163	static inline unsigned int snd_power_get_state(struct snd_card *card)
1da177e4 LT	164	{
	165	return card->power_state;
	166	}
	167
512bbd6a	168	static inline void snd_power_change_state(struct snd_card *card, unsigned int state)
1da177e4 LT	169	{
	170	card->power_state = state;
	171	wake_up(&card->power_sleep);
	172	}
d5750f67 HK	173
d5750f67 HK	174	/* init.c */
cbac4b0c	175	int snd_power_wait(struct snd_card *card, unsigned int power_state);
d5750f67	176
1da177e4 LT	177	#else /* ! CONFIG_PM */
	178
	179	#define snd_power_lock(card) do { (void)(card); } while (0)
	180	#define snd_power_unlock(card) do { (void)(card); } while (0)
6fdb94bd	181	static inline int snd_power_wait(struct snd_card *card, unsigned int state) { return 0; }
1da177e4 LT	182	#define snd_power_get_state(card) SNDRV_CTL_POWER_D0
1da177e4 LT	183	#define snd_power_change_state(card, state) do { (void)(card); } while (0)
1da177e4 LT	184
	185	#endif /* CONFIG_PM */
	186
512bbd6a	187	struct snd_minor {
2af677fc	188	int type; /* SNDRV_DEVICE_TYPE_XXX */
6983b724	189	int card; /* card number */
1da177e4	190	int device; /* device number */
99ac48f5	191	const struct file_operations f_ops; / file operations */
f87135f5	192	void private_data; / private data for f_ops->open */
d80f19fa	193	struct device dev; / device for sysfs */
1da177e4 LT	194	};
1da177e4 LT	195
7d2aae1e TI	196	/* return a device pointer linked to each sound device as a parent */
	197	static inline struct device snd_card_get_device_link(struct snd_card card)
	198	{
	199	#ifdef CONFIG_SYSFS_DEPRECATED
	200	return card ? card->dev : NULL;
	201	#else
	202	return card ? card->card_dev : NULL;
	203	#endif
	204	}
	205
1da177e4 LT	206	/* sound.c */
1da177e4 LT	207
f1902860	208	extern int snd_major;
1da177e4	209	extern int snd_ecards_limit;
d80f19fa	210	extern struct class *sound_class;
1da177e4 LT	211
	212	void snd_request_card(int card);
	213
12b131c4 JB	214	int snd_register_device_for_dev(int type, struct snd_card *card,
	215	int dev,
	216	const struct file_operations *f_ops,
	217	void *private_data,
	218	const char *name,
	219	struct device *device);
	220
	221	/**
	222	* snd_register_device - Register the ALSA device file for the card
	223	* @type: the device type, SNDRV_DEVICE_TYPE_XXX
	224	* @card: the card instance
	225	* @dev: the device index
	226	* @f_ops: the file operations
	227	* @private_data: user pointer for f_ops->open()
	228	* @name: the device file name
	229	*
	230	* Registers an ALSA device file for the given card.
	231	* The operators have to be set in reg parameter.
	232	*
	233	* This function uses the card's device pointer to link to the
	234	* correct &struct device.
	235	*
	236	* Returns zero if successful, or a negative error code on failure.
	237	*/
	238	static inline int snd_register_device(int type, struct snd_card *card, int dev,
	239	const struct file_operations *f_ops,
	240	void *private_data,
	241	const char *name)
	242	{
	243	return snd_register_device_for_dev(type, card, dev, f_ops,
	244	private_data, name,
c2902c8a	245	snd_card_get_device_link(card));
12b131c4 JB	246	}
12b131c4 JB	247
512bbd6a	248	int snd_unregister_device(int type, struct snd_card *card, int dev);
f87135f5	249	void *snd_lookup_minor_data(unsigned int minor, int type);
9d19f48c	250	int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
d80f19fa	251	struct device_attribute *attr);
1da177e4 LT	252
1da177e4 LT	253	#ifdef CONFIG_SND_OSSEMUL
2af677fc	254	int snd_register_oss_device(int type, struct snd_card *card, int dev,
99ac48f5	255	const struct file_operations f_ops, void private_data,
f87135f5	256	const char *name);
512bbd6a	257	int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
f87135f5	258	void *snd_lookup_oss_minor_data(unsigned int minor, int type);
1da177e4 LT	259	#endif
	260
	261	int snd_minor_info_init(void);
	262	int snd_minor_info_done(void);
	263
	264	/* sound_oss.c */
	265
	266	#ifdef CONFIG_SND_OSSEMUL
	267	int snd_minor_info_oss_init(void);
	268	int snd_minor_info_oss_done(void);
1da177e4	269	#else
ad5fada5 PM	270	static inline int snd_minor_info_oss_init(void) { return 0; }
ad5fada5 PM	271	static inline int snd_minor_info_oss_done(void) { return 0; }
1da177e4 LT	272	#endif
	273
	274	/* memory.c */
	275
1da177e4 LT	276	int copy_to_user_fromio(void __user dst, const volatile void __iomem src, size_t count);
	277	int copy_from_user_toio(volatile void __iomem dst, const void __user src, size_t count);
	278
	279	/* init.c */
	280
512bbd6a	281	extern struct snd_card *snd_cards[SNDRV_CARDS];
746df948	282	int snd_card_locked(int card);
1da177e4 LT	283	#if defined(CONFIG_SND_MIXER_OSS) \|\| defined(CONFIG_SND_MIXER_OSS_MODULE)
	284	#define SND_MIXER_OSS_NOTIFY_REGISTER 0
	285	#define SND_MIXER_OSS_NOTIFY_DISCONNECT 1
	286	#define SND_MIXER_OSS_NOTIFY_FREE 2
512bbd6a	287	extern int (snd_mixer_oss_notify_callback)(struct snd_card card, int cmd);
1da177e4 LT	288	#endif
1da177e4 LT	289
53fb1e63 TI	290	int snd_card_create(int idx, const char *id,
	291	struct module *module, int extra_size,
	292	struct snd_card **card_ret);
	293
512bbd6a TI	294	int snd_card_disconnect(struct snd_card *card);
512bbd6a TI	295	int snd_card_free(struct snd_card *card);
c461482c	296	int snd_card_free_when_closed(struct snd_card *card);
10a8ebbb	297	void snd_card_set_id(struct snd_card card, const char id);
512bbd6a	298	int snd_card_register(struct snd_card *card);
1da177e4 LT	299	int snd_card_info_init(void);
1da177e4 LT	300	int snd_card_info_done(void);
512bbd6a TI	301	int snd_component_add(struct snd_card card, const char component);
	302	int snd_card_file_add(struct snd_card card, struct file file);
	303	int snd_card_file_remove(struct snd_card card, struct file file);
1da177e4	304
edab938e	305	#define snd_card_set_dev(card, devptr) ((card)->dev = (devptr))
1da177e4 LT	306
	307	/* device.c */
	308
512bbd6a TI	309	int snd_device_new(struct snd_card *card, snd_device_type_t type,
	310	void device_data, struct snd_device_ops ops);
	311	int snd_device_register(struct snd_card card, void device_data);
	312	int snd_device_register_all(struct snd_card *card);
	313	int snd_device_disconnect(struct snd_card card, void device_data);
	314	int snd_device_disconnect_all(struct snd_card *card);
	315	int snd_device_free(struct snd_card card, void device_data);
	316	int snd_device_free_all(struct snd_card *card, snd_device_cmd_t cmd);
1da177e4 LT	317
	318	/* isadma.c */
	319
276bd31c	320	#ifdef CONFIG_ISA_DMA_API
1da177e4 LT	321	#define DMA_MODE_NO_ENABLE 0x0100
	322
	323	void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
	324	void snd_dma_disable(unsigned long dma);
	325	unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
276bd31c	326	#endif
1da177e4 LT	327
1da177e4 LT	328	/* misc.c */
b709e574	329	struct resource;
b1d5776d	330	void release_and_free_resource(struct resource *res);
1da177e4	331
1da177e4 LT	332	/* --- */
1da177e4 LT	333
36ce99c1 TI	334	#if defined(CONFIG_SND_DEBUG) \|\| defined(CONFIG_SND_VERBOSE_PRINTK)
	335	void __snd_printk(unsigned int level, const char *file, int line,
	336	const char *format, ...)
	337	__attribute__ ((format (printf, 4, 5)));
	338	#else
	339	#define __snd_printk(level, file, line, format, args...) \
cf0baf16	340	printk(format, ##args)
36ce99c1 TI	341	#endif
36ce99c1 TI	342
1da177e4 LT	343	/**
	344	* snd_printk - printk wrapper
	345	* @fmt: format string
	346	*
f66fcedc	347	* Works like printk() but prints the file and the line of the caller
1da177e4 LT	348	* when configured with CONFIG_SND_VERBOSE_PRINTK.
	349	*/
	350	#define snd_printk(fmt, args...) \
36ce99c1	351	__snd_printk(0, __FILE__, __LINE__, fmt, ##args)
1da177e4 LT	352
1da177e4 LT	353	#ifdef CONFIG_SND_DEBUG
1da177e4 LT	354	/**
1da177e4 LT	355	* snd_printd - debug printk
0863afb3	356	* @fmt: format string
1da177e4	357	*
edab938e	358	* Works like snd_printk() for debugging purposes.
1da177e4 LT	359	* Ignored when CONFIG_SND_DEBUG is not set.
	360	*/
	361	#define snd_printd(fmt, args...) \
36ce99c1	362	__snd_printk(1, __FILE__, __LINE__, fmt, ##args)
7c22f1aa	363
f66fcedc TI	364	/**
	365	* snd_BUG - give a BUG warning message and stack trace
	366	*
	367	* Calls WARN() if CONFIG_SND_DEBUG is set.
	368	* Ignored when CONFIG_SND_DEBUG is not set.
	369	*/
bdbecf50	370	#define snd_BUG() WARN(1, "BUG?\n")
f66fcedc TI	371
	372	/**
	373	* snd_BUG_ON - debugging check macro
	374	* @cond: condition to evaluate
	375	*
	376	* When CONFIG_SND_DEBUG is set, this macro evaluates the given condition,
	377	* and call WARN() and returns the value if it's non-zero.
	378	*
	379	* When CONFIG_SND_DEBUG is not set, this just returns zero, and the given
	380	* condition is ignored.
	381	*
	382	* NOTE: the argument won't be evaluated at all when CONFIG_SND_DEBUG=n.
	383	* Thus, don't put any statement that influences on the code behavior,
	384	* such as pre/post increment, to the argument of this macro.
	385	* If you want to evaluate and give a warning, use standard WARN_ON().
	386	*/
5ef03460	387	#define snd_BUG_ON(cond) WARN((cond), "BUG? (%s)\n", __stringify(cond))
1da177e4 LT	388
	389	#else /* !CONFIG_SND_DEBUG */
	390
fcef7836 AM	391	#define snd_printd(fmt, args...) do { } while (0)
fcef7836 AM	392	#define snd_BUG() do { } while (0)
945eed02	393	static inline int __snd_bug_on(int cond)
fcef7836 AM	394	{
	395	return 0;
	396	}
945eed02	397	#define snd_BUG_ON(cond) __snd_bug_on(0 && (cond)) /* always false */
1da177e4 LT	398
	399	#endif /* CONFIG_SND_DEBUG */
	400
62cf872a	401	#ifdef CONFIG_SND_DEBUG_VERBOSE
1da177e4 LT	402	/**
	403	* snd_printdd - debug printk
	404	* @format: format string
	405	*
edab938e	406	* Works like snd_printk() for debugging purposes.
62cf872a	407	* Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
1da177e4	408	*/
36ce99c1 TI	409	#define snd_printdd(format, args...) \
36ce99c1 TI	410	__snd_printk(2, __FILE__, __LINE__, format, ##args)
1da177e4	411	#else
36ce99c1	412	#define snd_printdd(format, args...) do { } while (0)
1da177e4 LT	413	#endif
1da177e4 LT	414
1da177e4	415
1da177e4 LT	416	#define SNDRV_OSS_VERSION ((3<<16)\|(8<<8)\|(1<<4)\|(0)) /* 3.8.1a */
	417
	418	/* for easier backward-porting */
	419	#if defined(CONFIG_GAMEPORT) \|\| defined(CONFIG_GAMEPORT_MODULE)
1da177e4 LT	420	#define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
	421	#define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
	422	#define gameport_get_port_data(gp) (gp)->port_data
	423	#endif
1da177e4	424
d9ea472c TI	425	/* PCI quirk list helper */
	426	struct snd_pci_quirk {
	427	unsigned short subvendor; /* PCI subvendor ID */
	428	unsigned short subdevice; /* PCI subdevice ID */
8bd4bb7a	429	unsigned short subdevice_mask; /* bitmask to match */
d9ea472c	430	int value; /* value */
62cf872a	431	#ifdef CONFIG_SND_DEBUG_VERBOSE
d9ea472c TI	432	const char name; / name of the device (optional) */
	433	#endif
	434	};
	435
8bd4bb7a TI	436	#define _SND_PCI_QUIRK_ID_MASK(vend, mask, dev) \
	437	.subvendor = (vend), .subdevice = (dev), .subdevice_mask = (mask)
	438	#define _SND_PCI_QUIRK_ID(vend, dev) \
	439	_SND_PCI_QUIRK_ID_MASK(vend, 0xffff, dev)
d9ea472c	440	#define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
62cf872a	441	#ifdef CONFIG_SND_DEBUG_VERBOSE
d9ea472c TI	442	#define SND_PCI_QUIRK(vend,dev,xname,val) \
d9ea472c TI	443	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
8bd4bb7a TI	444	#define SND_PCI_QUIRK_VENDOR(vend, xname, val) \
	445	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val), .name = (xname)}
	446	#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val) \
	447	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), \
	448	.value = (val), .name = (xname)}
d9ea472c TI	449	#else
	450	#define SND_PCI_QUIRK(vend,dev,xname,val) \
	451	{_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}
8bd4bb7a TI	452	#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val) \
	453	{_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), .value = (val)}
	454	#define SND_PCI_QUIRK_VENDOR(vend, xname, val) \
	455	{_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val)}
d9ea472c TI	456	#endif
	457
	458	const struct snd_pci_quirk *
	459	snd_pci_quirk_lookup(struct pci_dev pci, const struct snd_pci_quirk list);
	460
d1458279 TI	461	const struct snd_pci_quirk *
	462	snd_pci_quirk_lookup_id(u16 vendor, u16 device,
	463	const struct snd_pci_quirk *list);
d9ea472c	464
1da177e4	465	#endif /* __SOUND_CORE_H */