5 * Main header file for the ALSA driver
6 * Copyright (c) 1994-2001 by Jaroslav Kysela <perex@suse.cz>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 #include <linux/sched.h> /* wake_up() */
26 #include <linux/mutex.h> /* struct mutex */
27 #include <linux/rwsem.h> /* struct rw_semaphore */
28 #include <linux/pm.h> /* pm_message_t */
30 /* forward declarations */
38 /* device allocation stuff */
40 #define SNDRV_DEV_TYPE_RANGE_SIZE 0x1000
42 typedef int __bitwise snd_device_type_t;
43 #define SNDRV_DEV_TOPLEVEL ((__force snd_device_type_t) 0)
44 #define SNDRV_DEV_CONTROL ((__force snd_device_type_t) 1)
45 #define SNDRV_DEV_LOWLEVEL_PRE ((__force snd_device_type_t) 2)
46 #define SNDRV_DEV_LOWLEVEL_NORMAL ((__force snd_device_type_t) 0x1000)
47 #define SNDRV_DEV_PCM ((__force snd_device_type_t) 0x1001)
48 #define SNDRV_DEV_RAWMIDI ((__force snd_device_type_t) 0x1002)
49 #define SNDRV_DEV_TIMER ((__force snd_device_type_t) 0x1003)
50 #define SNDRV_DEV_SEQUENCER ((__force snd_device_type_t) 0x1004)
51 #define SNDRV_DEV_HWDEP ((__force snd_device_type_t) 0x1005)
52 #define SNDRV_DEV_INFO ((__force snd_device_type_t) 0x1006)
53 #define SNDRV_DEV_BUS ((__force snd_device_type_t) 0x1007)
54 #define SNDRV_DEV_CODEC ((__force snd_device_type_t) 0x1008)
55 #define SNDRV_DEV_LOWLEVEL ((__force snd_device_type_t) 0x2000)
57 typedef int __bitwise snd_device_state_t;
58 #define SNDRV_DEV_BUILD ((__force snd_device_state_t) 0)
59 #define SNDRV_DEV_REGISTERED ((__force snd_device_state_t) 1)
60 #define SNDRV_DEV_DISCONNECTED ((__force snd_device_state_t) 2)
62 typedef int __bitwise snd_device_cmd_t;
63 #define SNDRV_DEV_CMD_PRE ((__force snd_device_cmd_t) 0)
64 #define SNDRV_DEV_CMD_NORMAL ((__force snd_device_cmd_t) 1)
65 #define SNDRV_DEV_CMD_POST ((__force snd_device_cmd_t) 2)
69 struct snd_device_ops {
70 int (*dev_free)(struct snd_device *dev);
71 int (*dev_register)(struct snd_device *dev);
72 int (*dev_disconnect)(struct snd_device *dev);
76 struct list_head list; /* list of registered devices */
77 struct snd_card *card; /* card which holds this device */
78 snd_device_state_t state; /* state of the device */
79 snd_device_type_t type; /* device type */
80 void *device_data; /* device structure */
81 struct snd_device_ops *ops; /* operations */
84 #define snd_device(n) list_entry(n, struct snd_device, list)
86 /* monitor files for graceful shutdown (hotplug) */
88 struct snd_monitor_file {
90 struct snd_monitor_file *next;
93 struct snd_shutdown_f_ops; /* define it later in init.c */
95 /* main structure for soundcard */
98 int number; /* number of soundcard (index to
101 char id[16]; /* id string of this card */
102 char driver[16]; /* driver name */
103 char shortname[32]; /* short name of this soundcard */
104 char longname[80]; /* name of this soundcard */
105 char mixername[80]; /* mixer name */
106 char components[80]; /* card components delimited with
108 struct module *module; /* top-level module */
110 void *private_data; /* private data for soundcard */
111 void (*private_free) (struct snd_card *card); /* callback for freeing of
113 struct list_head devices; /* devices */
115 unsigned int last_numid; /* last used numeric ID */
116 struct rw_semaphore controls_rwsem; /* controls list lock */
117 rwlock_t ctl_files_rwlock; /* ctl_files list lock */
118 int controls_count; /* count of all controls */
119 int user_ctl_count; /* count of all user controls */
120 struct list_head controls; /* all controls for this card */
121 struct list_head ctl_files; /* active control files */
123 struct snd_info_entry *proc_root; /* root for soundcard specific files */
124 struct snd_info_entry *proc_id; /* the card id */
125 struct proc_dir_entry *proc_root_link; /* number link to real id */
127 struct snd_monitor_file *files; /* all files associated to this card */
128 struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
130 spinlock_t files_lock; /* lock the files for this card */
131 int shutdown; /* this card is going down */
132 int free_on_last_close; /* free in context of file_release */
133 wait_queue_head_t shutdown_sleep;
137 unsigned int power_state; /* power state */
138 struct mutex power_lock; /* power lock */
139 wait_queue_head_t power_sleep;
142 #if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
143 struct snd_mixer_oss *mixer_oss;
144 int mixer_oss_change_count;
149 static inline void snd_power_lock(struct snd_card *card)
151 mutex_lock(&card->power_lock);
154 static inline void snd_power_unlock(struct snd_card *card)
156 mutex_unlock(&card->power_lock);
159 static inline unsigned int snd_power_get_state(struct snd_card *card)
161 return card->power_state;
164 static inline void snd_power_change_state(struct snd_card *card, unsigned int state)
166 card->power_state = state;
167 wake_up(&card->power_sleep);
171 int snd_power_wait(struct snd_card *card, unsigned int power_state);
173 #else /* ! CONFIG_PM */
175 #define snd_power_lock(card) do { (void)(card); } while (0)
176 #define snd_power_unlock(card) do { (void)(card); } while (0)
177 static inline int snd_power_wait(struct snd_card *card, unsigned int state) { return 0; }
178 #define snd_power_get_state(card) SNDRV_CTL_POWER_D0
179 #define snd_power_change_state(card, state) do { (void)(card); } while (0)
181 #endif /* CONFIG_PM */
184 int type; /* SNDRV_DEVICE_TYPE_XXX */
185 int card; /* card number */
186 int device; /* device number */
187 const struct file_operations *f_ops; /* file operations */
188 void *private_data; /* private data for f_ops->open */
193 extern int snd_major;
194 extern int snd_ecards_limit;
196 void snd_request_card(int card);
198 int snd_register_device(int type, struct snd_card *card, int dev,
199 const struct file_operations *f_ops, void *private_data,
201 int snd_unregister_device(int type, struct snd_card *card, int dev);
202 void *snd_lookup_minor_data(unsigned int minor, int type);
204 #ifdef CONFIG_SND_OSSEMUL
205 int snd_register_oss_device(int type, struct snd_card *card, int dev,
206 const struct file_operations *f_ops, void *private_data,
208 int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
209 void *snd_lookup_oss_minor_data(unsigned int minor, int type);
212 int snd_minor_info_init(void);
213 int snd_minor_info_done(void);
217 #ifdef CONFIG_SND_OSSEMUL
218 int snd_minor_info_oss_init(void);
219 int snd_minor_info_oss_done(void);
221 #define snd_minor_info_oss_init() /*NOP*/
222 #define snd_minor_info_oss_done() /*NOP*/
227 int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
228 int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);
232 extern struct snd_card *snd_cards[SNDRV_CARDS];
233 int snd_card_locked(int card);
234 #if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
235 #define SND_MIXER_OSS_NOTIFY_REGISTER 0
236 #define SND_MIXER_OSS_NOTIFY_DISCONNECT 1
237 #define SND_MIXER_OSS_NOTIFY_FREE 2
238 extern int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int cmd);
241 struct snd_card *snd_card_new(int idx, const char *id,
242 struct module *module, int extra_size);
243 int snd_card_disconnect(struct snd_card *card);
244 int snd_card_free(struct snd_card *card);
245 int snd_card_free_when_closed(struct snd_card *card);
246 int snd_card_register(struct snd_card *card);
247 int snd_card_info_init(void);
248 int snd_card_info_done(void);
249 int snd_component_add(struct snd_card *card, const char *component);
250 int snd_card_file_add(struct snd_card *card, struct file *file);
251 int snd_card_file_remove(struct snd_card *card, struct file *file);
253 #ifndef snd_card_set_dev
254 #define snd_card_set_dev(card,devptr) ((card)->dev = (devptr))
259 int snd_device_new(struct snd_card *card, snd_device_type_t type,
260 void *device_data, struct snd_device_ops *ops);
261 int snd_device_register(struct snd_card *card, void *device_data);
262 int snd_device_register_all(struct snd_card *card);
263 int snd_device_disconnect(struct snd_card *card, void *device_data);
264 int snd_device_disconnect_all(struct snd_card *card);
265 int snd_device_free(struct snd_card *card, void *device_data);
266 int snd_device_free_all(struct snd_card *card, snd_device_cmd_t cmd);
270 #ifdef CONFIG_ISA_DMA_API
271 #define DMA_MODE_NO_ENABLE 0x0100
273 void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
274 void snd_dma_disable(unsigned long dma);
275 unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
280 void release_and_free_resource(struct resource *res);
282 #ifdef CONFIG_SND_VERBOSE_PRINTK
283 void snd_verbose_printk(const char *file, int line, const char *format, ...)
284 __attribute__ ((format (printf, 3, 4)));
286 #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
287 void snd_verbose_printd(const char *file, int line, const char *format, ...)
288 __attribute__ ((format (printf, 3, 4)));
293 #ifdef CONFIG_SND_VERBOSE_PRINTK
295 * snd_printk - printk wrapper
296 * @fmt: format string
298 * Works like print() but prints the file and the line of the caller
299 * when configured with CONFIG_SND_VERBOSE_PRINTK.
301 #define snd_printk(fmt, args...) \
302 snd_verbose_printk(__FILE__, __LINE__, fmt ,##args)
304 #define snd_printk(fmt, args...) \
308 #ifdef CONFIG_SND_DEBUG
310 #define __ASTRING__(x) #x
312 #ifdef CONFIG_SND_VERBOSE_PRINTK
314 * snd_printd - debug printk
315 * @fmt: format string
317 * Compiled only when Works like snd_printk() for debugging purpose.
318 * Ignored when CONFIG_SND_DEBUG is not set.
320 #define snd_printd(fmt, args...) \
321 snd_verbose_printd(__FILE__, __LINE__, fmt ,##args)
323 #define snd_printd(fmt, args...) \
327 * snd_assert - run-time assertion macro
330 * This macro checks the expression in run-time and invokes the commands
331 * given in the rest arguments if the assertion is failed.
332 * When CONFIG_SND_DEBUG is not set, the expression is executed but
335 #define snd_assert(expr, args...) do { \
336 if (unlikely(!(expr))) { \
337 snd_printk(KERN_ERR "BUG? (%s)\n", __ASTRING__(expr)); \
343 #define snd_BUG() do { \
344 snd_printk(KERN_ERR "BUG?\n"); \
348 #else /* !CONFIG_SND_DEBUG */
350 #define snd_printd(fmt, args...) /* nothing */
351 #define snd_assert(expr, args...) (void)(expr)
352 #define snd_BUG() /* nothing */
354 #endif /* CONFIG_SND_DEBUG */
356 #ifdef CONFIG_SND_DEBUG_DETECT
358 * snd_printdd - debug printk
359 * @format: format string
361 * Compiled only when Works like snd_printk() for debugging purpose.
362 * Ignored when CONFIG_SND_DEBUG_DETECT is not set.
364 #define snd_printdd(format, args...) snd_printk(format, ##args)
366 #define snd_printdd(format, args...) /* nothing */
370 #define SNDRV_OSS_VERSION ((3<<16)|(8<<8)|(1<<4)|(0)) /* 3.8.1a */
372 /* for easier backward-porting */
373 #if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
374 #ifndef gameport_set_dev_parent
375 #define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
376 #define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
377 #define gameport_get_port_data(gp) (gp)->port_data
381 #include "typedefs.h"
383 #endif /* __SOUND_CORE_H */