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#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
 *   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 <linux/mutex.h>            /* struct mutex */
#include <linux/rwsem.h>            /* struct rw_semaphore */
#include <linux/pm.h>               /* pm_message_t */
#include <linux/device.h>

/* forward declarations */
struct pci_dev;
struct sbus_dev;

/* 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_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)

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

struct snd_monitor_file {
      struct file *file;
      struct snd_monitor_file *next;
      const struct file_operations *disconnected_f_op;
      struct list_head shutdown_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[80];          /* 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 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 */
      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 */
      struct device *card_dev;      /* cardX object for sysfs */

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

      struct snd_mixer_oss *mixer_oss;
      int mixer_oss_change_count;

#ifdef CONFIG_PM
static inline void snd_power_lock(struct snd_card *card)

static inline void snd_power_unlock(struct snd_card *card)

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;

/* 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)
      return card ? card->dev : NULL;
      return card ? card->card_dev : NULL;

/* 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,

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);

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);

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

/* sound_oss.c */

int snd_minor_info_oss_init(void);
int snd_minor_info_oss_done(void);
#define snd_minor_info_oss_init() /*NOP*/
#define snd_minor_info_oss_done() /*NOP*/

/* 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);
extern int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int cmd);

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

#ifndef snd_card_set_dev
#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 */

#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);

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

void snd_verbose_printk(const char *file, int line, const char *format, ...)
     __attribute__ ((format (printf, 3, 4)));
void snd_verbose_printd(const char *file, int line, const char *format, ...)
     __attribute__ ((format (printf, 3, 4)));

/* --- */

 * 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)
#define snd_printk(fmt, args...) \
      printk(fmt ,##args)


#define __ASTRING__(x) #x

 * snd_printd - debug printk
 * @fmt: 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)
#define snd_printd(fmt, args...) \
      printk(fmt ,##args)
 * snd_assert - run-time assertion macro
 * @expr: expression
 * 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 */

 * 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)
#define snd_printdd(format, args...) /* nothing */

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

/* for easier backward-porting */
#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

/* PCI quirk list helper */
struct snd_pci_quirk {
      unsigned short subvendor;     /* PCI subvendor ID */
      unsigned short subdevice;     /* PCI subdevice ID */
      int value;              /* value */
      const char *name;       /* name of the device (optional) */

#define _SND_PCI_QUIRK_ID(vend,dev) \
      .subvendor = (vend), .subdevice = (dev)
#define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
#define SND_PCI_QUIRK(vend,dev,xname,val) \
      {_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
#define SND_PCI_QUIRK(vend,dev,xname,val) \
      {_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}

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

#endif /* __SOUND_CORE_H */

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