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struct module; struct completion; /* device allocation stuff */ /* type of the object used in snd_device_*() * this also defines the calling order */ enum snd_device_type { SNDRV_DEV_LOWLEVEL, SNDRV_DEV_INFO, SNDRV_DEV_BUS, SNDRV_DEV_CODEC, SNDRV_DEV_PCM, SNDRV_DEV_COMPRESS, SNDRV_DEV_RAWMIDI, SNDRV_DEV_TIMER, SNDRV_DEV_SEQUENCER, SNDRV_DEV_HWDEP, SNDRV_DEV_JACK, SNDRV_DEV_CONTROL, /* NOTE: this must be the last one */ }; enum snd_device_state { SNDRV_DEV_BUILD, SNDRV_DEV_REGISTERED, SNDRV_DEV_DISCONNECTED, }; 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 */ enum snd_device_state state; /* state of the device */ enum snd_device_type 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 irq_descr[32]; /* Interrupt description */ 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 */ struct device ctl_dev; /* control device */ 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 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 */ struct completion *release_completion; struct device *dev; /* device assigned to this card */ struct device card_dev; /* cardX object for sysfs */ const struct attribute_group *dev_groups[4]; /* assigned sysfs attr */ bool registered; /* card_dev is registered? */ wait_queue_head_t remove_sleep; #ifdef CONFIG_PM unsigned int power_state; /* power state */ wait_queue_head_t power_sleep; #endif #if IS_ENABLED(CONFIG_SND_MIXER_OSS) struct snd_mixer_oss *mixer_oss; int mixer_oss_change_count; #endif }; #define dev_to_snd_card(p) container_of(p, struct snd_card, card_dev) #ifdef CONFIG_PM 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 */ static inline int snd_power_wait(struct snd_card *card, unsigned int state) { return 0; } #define snd_power_get_state(card) ({ (void)(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 */ struct snd_card *card_ptr; /* assigned card instance */ }; /* 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->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); void snd_device_initialize(struct device *dev, struct snd_card *card); int snd_register_device(int type, struct snd_card *card, int dev, const struct file_operations *f_ops, void *private_data, struct device *device); int snd_unregister_device(struct device *dev); void *snd_lookup_minor_data(unsigned int minor, int type); #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); 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); /* sound_oss.c */ #ifdef CONFIG_SND_OSSEMUL int snd_minor_info_oss_init(void); #else static inline int snd_minor_info_oss_init(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 */ int snd_card_locked(int card); #if IS_ENABLED(CONFIG_SND_MIXER_OSS) #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_new(struct device *parent, int idx, const char *xid, struct module *module, int extra_size, struct snd_card **card_ret); int snd_card_disconnect(struct snd_card *card); void snd_card_disconnect_sync(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_add_dev_attr(struct snd_card *card, const struct attribute_group *group); 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); struct snd_card *snd_card_ref(int card); /** * snd_card_unref - Unreference the card object * @card: the card object to unreference * * Call this function for the card object that was obtained via snd_card_ref() * or snd_lookup_minor_data(). */ static inline void snd_card_unref(struct snd_card *card) { put_device(&card->card_dev); } #define snd_card_set_dev(card, devptr) ((card)->dev = (devptr)) /* device.c */ int snd_device_new(struct snd_card *card, enum snd_device_type 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); void snd_device_disconnect(struct snd_card *card, void *device_data); void snd_device_disconnect_all(struct snd_card *card); void snd_device_free(struct snd_card *card, void *device_data); void snd_device_free_all(struct snd_card *card); /* 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); /* --- */ /* sound printk debug levels */ enum { SND_PR_ALWAYS, SND_PR_DEBUG, SND_PR_VERBOSE, }; #if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK) __printf(4, 5) void __snd_printk(unsigned int level, const char *file, int line, const char *format, ...); #else #define __snd_printk(level, file, line, format, ...) \ printk(format, ##__VA_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, ...) \ __snd_printk(0, __FILE__, __LINE__, fmt, ##__VA_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, ...) \ __snd_printk(1, __FILE__, __LINE__, fmt, ##__VA_ARGS__) #define _snd_printd(level, fmt, ...) \ __snd_printk(level, __FILE__, __LINE__, fmt, ##__VA_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") /** * Suppress high rates of output when CONFIG_SND_DEBUG is enabled. */ #define snd_printd_ratelimit() printk_ratelimit() /** * snd_BUG_ON - debugging check macro * @cond: condition to evaluate * * Has the same behavior as WARN_ON when CONFIG_SND_DEBUG is set, * otherwise just evaluates the conditional and returns the value. */ #define snd_BUG_ON(cond) WARN_ON((cond)) #else /* !CONFIG_SND_DEBUG */ __printf(1, 2) static inline void snd_printd(const char *format, ...) {} __printf(2, 3) static inline void _snd_printd(int level, const char *format, ...) {} #define snd_BUG() do { } while (0) #define snd_BUG_ON(condition) ({ \ int __ret_warn_on = !!(condition); \ unlikely(__ret_warn_on); \ }) static inline bool snd_printd_ratelimit(void) { return 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, ...) \ __snd_printk(2, __FILE__, __LINE__, format, ##__VA_ARGS__) #else __printf(1, 2) static inline void snd_printdd(const char *format, ...) {} #endif #define SNDRV_OSS_VERSION ((3<<16)|(8<<8)|(1<<4)|(0)) /* 3.8.1a */ /* for easier backward-porting */ #if IS_ENABLED(CONFIG_GAMEPORT) #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)} #define snd_pci_quirk_name(q) ((q)->name) #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)} #define snd_pci_quirk_name(q) "" #endif #ifdef CONFIG_PCI 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); #else static inline const struct snd_pci_quirk * snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list) { return NULL; } static inline const struct snd_pci_quirk * snd_pci_quirk_lookup_id(u16 vendor, u16 device, const struct snd_pci_quirk *list) { return NULL; } #endif #endif /* __SOUND_CORE_H */