| #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> |
| |
| /* 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 |
| #ifdef CONFIG_SBUS |
| struct sbus_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) |
| |
| /* 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 */ |
| #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 |
| |
| 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)) |
| #endif |
| |
| /* 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); |
| |
| #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 |
| * @fmt: format string |
| * |
| * 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_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 */ |
| |
| #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(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 |
| |
| /* PCI quirk list helper */ |
| struct snd_pci_quirk { |
| unsigned short subvendor; /* PCI subvendor ID */ |
| unsigned short subdevice; /* PCI subdevice ID */ |
| int value; /* value */ |
| #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(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)} |
| #else |
| #define SND_PCI_QUIRK(vend,dev,xname,val) \ |
| {_SND_PCI_QUIRK_ID(vend, dev), .value = (val)} |
| #endif |
| |
| const struct snd_pci_quirk * |
| snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list); |
| |
| |
| #endif /* __SOUND_CORE_H */ |