diff options
Diffstat (limited to 'include/sound/core.h')
| -rw-r--r-- | include/sound/core.h | 287 |
1 files changed, 155 insertions, 132 deletions
diff --git a/include/sound/core.h b/include/sound/core.h index 4fc0235ad78..1df3f2fe535 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -22,16 +22,17 @@ * */ -#include <linux/module.h> +#include <linux/device.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> +#include <linux/printk.h> /* number of supported soundcards */ #ifdef CONFIG_SND_DYNAMIC_MINORS -#define SNDRV_CARDS 32 +#define SNDRV_CARDS CONFIG_SND_MAX_CARDS #else #define SNDRV_CARDS 8 /* don't change - minor numbers */ #endif @@ -39,41 +40,35 @@ #define CONFIG_SND_MAJOR 116 /* standard configuration */ /* forward declarations */ -#ifdef CONFIG_PCI struct pci_dev; -#endif -#ifdef CONFIG_SBUS -struct sbus_dev; -#endif +struct module; +struct completion; /* 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) +/* type of the object used in snd_device_*() + * this also defines the calling order + */ +enum snd_device_type { + SNDRV_DEV_LOWLEVEL, + SNDRV_DEV_CONTROL, + 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, +}; + +enum snd_device_state { + SNDRV_DEV_BUILD, + SNDRV_DEV_REGISTERED, + SNDRV_DEV_DISCONNECTED, +}; struct snd_device; @@ -86,23 +81,14 @@ struct snd_device_ops { 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 */ + 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) -/* 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 { @@ -114,7 +100,7 @@ struct snd_card { 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 + char components[128]; /* card components delimited with space */ struct module *module; /* top-level module */ @@ -130,22 +116,22 @@ struct snd_card { 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 mutex user_ctl_lock; /* protects user controls against + concurrent access */ 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 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 completion *release_completion; struct device *dev; /* device assigned to this card */ -#ifndef CONFIG_SYSFS_DEPRECATED - struct device *card_dev; /* cardX object for sysfs */ -#endif + struct device card_dev; /* cardX object for sysfs */ + bool registered; /* card_dev is registered? */ #ifdef CONFIG_PM unsigned int power_state; /* power state */ @@ -159,6 +145,8 @@ struct snd_card { #endif }; +#define dev_to_snd_card(p) container_of(p, struct snd_card, card_dev) + #ifdef CONFIG_PM static inline void snd_power_lock(struct snd_card *card) { @@ -189,7 +177,7 @@ int snd_power_wait(struct snd_card *card, unsigned int power_state); #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_get_state(card) ({ (void)(card); SNDRV_CTL_POWER_D0; }) #define snd_power_change_state(card, state) do { (void)(card); } while (0) #endif /* CONFIG_PM */ @@ -201,16 +189,13 @@ struct snd_minor { 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) { -#ifdef CONFIG_SYSFS_DEPRECATED - return card ? card->dev : NULL; -#else - return card ? card->card_dev : NULL; -#endif + return card ? &card->card_dev : NULL; } /* sound.c */ @@ -243,7 +228,7 @@ int snd_register_device_for_dev(int type, struct snd_card *card, * 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. + * Return: 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, @@ -257,13 +242,11 @@ static inline int snd_register_device(int type, struct snd_card *card, int dev, 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); +struct device *snd_get_device(int type, struct snd_card *card, int dev); #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); + 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 @@ -277,8 +260,8 @@ int snd_minor_info_done(void); int snd_minor_info_oss_init(void); int snd_minor_info_oss_done(void); #else -#define snd_minor_info_oss_init() /*NOP*/ -#define snd_minor_info_oss_done() /*NOP*/ +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 */ @@ -297,32 +280,33 @@ int snd_card_locked(int card); extern int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int cmd); #endif -struct snd_card *snd_card_new(int idx, const char *id, - struct module *module, int extra_size); +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); 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_unref(card) put_device(&(card)->card_dev) -#ifndef snd_card_set_dev -#define snd_card_set_dev(card,devptr) ((card)->dev = (devptr)) -#endif +#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, +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); -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); +void snd_device_free(struct snd_card *card, void *device_data); +void snd_device_free_all(struct snd_card *card); /* isadma.c */ @@ -338,91 +322,100 @@ unsigned int snd_dma_pointer(unsigned long dma, unsigned int size); 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 +/* 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, args...) \ + printk(format, ##args) +#endif + /** * snd_printk - printk wrapper * @fmt: format string * - * Works like print() but prints the file and the line of the caller + * 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_verbose_printk(__FILE__, __LINE__, fmt ,##args) -#else -#define snd_printk(fmt, args...) \ - printk(fmt ,##args) -#endif + __snd_printk(0, __FILE__, __LINE__, fmt, ##args) #ifdef CONFIG_SND_DEBUG - -#define __ASTRING__(x) #x - -#ifdef CONFIG_SND_VERBOSE_PRINTK /** * snd_printd - debug printk * @fmt: format string * - * Compiled only when Works like snd_printk() for debugging purpose. + * Works like snd_printk() for debugging purposes. * 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_printk(1, __FILE__, __LINE__, fmt, ##args) +#define _snd_printd(level, fmt, args...) \ + __snd_printk(level, __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") + +/** + * Suppress high rates of output when CONFIG_SND_DEBUG is enabled. + */ +#define snd_printd_ratelimit() printk_ratelimit() + /** - * snd_assert - run-time assertion macro - * @expr: expression + * snd_BUG_ON - debugging check macro + * @cond: condition to evaluate * - * 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. + * Has the same behavior as WARN_ON when CONFIG_SND_DEBUG is set, + * otherwise just evaluates the conditional and returns the value. */ -#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) +#define snd_BUG_ON(cond) WARN_ON((cond)) #else /* !CONFIG_SND_DEBUG */ -#define snd_printd(fmt, args...) /* nothing */ -#define snd_assert(expr, args...) (void)(expr) -#define snd_BUG() /* nothing */ +__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_DETECT +#ifdef CONFIG_SND_DEBUG_VERBOSE /** * 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. + * Works like snd_printk() for debugging purposes. + * Ignored when CONFIG_SND_DEBUG_VERBOSE is not set. */ -#define snd_printdd(format, args...) snd_printk(format, ##args) +#define snd_printdd(format, args...) \ + __snd_printk(2, __FILE__, __LINE__, format, ##args) #else -#define snd_printdd(format, args...) /* nothing */ +__printf(1, 2) +static inline void snd_printdd(const char *format, ...) {} #endif @@ -430,36 +423,66 @@ void snd_verbose_printd(const char *file, int line, const char *format, ...) /* 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 /* 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_DETECT +#ifdef CONFIG_SND_DEBUG_VERBOSE const char *name; /* name of the device (optional) */ #endif }; -#define _SND_PCI_QUIRK_ID(vend,dev) \ - .subvendor = (vend), .subdevice = (dev) +#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_DETECT +#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 */ |