#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 */