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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef __SOUND_CORE_H
2#define __SOUND_CORE_H
3
4/*
5 * Main header file for the ALSA driver
Jaroslav Kyselac1017a42007-10-15 09:50:19 +02006 * Copyright (c) 1994-2001 by Jaroslav Kysela <perex@perex.cz>
Linus Torvalds1da177e2005-04-16 15:20:36 -07007 *
8 *
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.
13 *
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.
18 *
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
22 *
23 */
24
Takashi Iwai9004acc2008-01-08 18:13:27 +010025#include <linux/module.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070026#include <linux/sched.h> /* wake_up() */
Ingo Molnar1a60d4c2006-01-16 16:29:08 +010027#include <linux/mutex.h> /* struct mutex */
Linus Torvalds1da177e2005-04-16 15:20:36 -070028#include <linux/rwsem.h> /* struct rw_semaphore */
Linus Torvalds1da177e2005-04-16 15:20:36 -070029#include <linux/pm.h> /* pm_message_t */
Takashi Iwai9d19f482006-09-06 14:27:46 +020030#include <linux/device.h>
Takashi Iwai5ef03462008-08-08 17:06:01 +020031#include <linux/stringify.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070032
Takashi Iwai9004acc2008-01-08 18:13:27 +010033/* number of supported soundcards */
34#ifdef CONFIG_SND_DYNAMIC_MINORS
35#define SNDRV_CARDS 32
36#else
37#define SNDRV_CARDS 8 /* don't change - minor numbers */
38#endif
39
40#define CONFIG_SND_MAJOR 116 /* standard configuration */
41
Linus Torvalds1da177e2005-04-16 15:20:36 -070042/* forward declarations */
43#ifdef CONFIG_PCI
44struct pci_dev;
45#endif
46#ifdef CONFIG_SBUS
47struct sbus_dev;
48#endif
49
50/* device allocation stuff */
51
52#define SNDRV_DEV_TYPE_RANGE_SIZE 0x1000
53
Takashi Iwai512bbd62005-11-17 13:51:18 +010054typedef int __bitwise snd_device_type_t;
55#define SNDRV_DEV_TOPLEVEL ((__force snd_device_type_t) 0)
56#define SNDRV_DEV_CONTROL ((__force snd_device_type_t) 1)
57#define SNDRV_DEV_LOWLEVEL_PRE ((__force snd_device_type_t) 2)
58#define SNDRV_DEV_LOWLEVEL_NORMAL ((__force snd_device_type_t) 0x1000)
59#define SNDRV_DEV_PCM ((__force snd_device_type_t) 0x1001)
60#define SNDRV_DEV_RAWMIDI ((__force snd_device_type_t) 0x1002)
61#define SNDRV_DEV_TIMER ((__force snd_device_type_t) 0x1003)
62#define SNDRV_DEV_SEQUENCER ((__force snd_device_type_t) 0x1004)
63#define SNDRV_DEV_HWDEP ((__force snd_device_type_t) 0x1005)
64#define SNDRV_DEV_INFO ((__force snd_device_type_t) 0x1006)
65#define SNDRV_DEV_BUS ((__force snd_device_type_t) 0x1007)
66#define SNDRV_DEV_CODEC ((__force snd_device_type_t) 0x1008)
Mark Browne76d8ce2008-07-28 19:05:35 +010067#define SNDRV_DEV_JACK ((__force snd_device_type_t) 0x1009)
Takashi Iwai512bbd62005-11-17 13:51:18 +010068#define SNDRV_DEV_LOWLEVEL ((__force snd_device_type_t) 0x2000)
Linus Torvalds1da177e2005-04-16 15:20:36 -070069
Takashi Iwai512bbd62005-11-17 13:51:18 +010070typedef int __bitwise snd_device_state_t;
71#define SNDRV_DEV_BUILD ((__force snd_device_state_t) 0)
72#define SNDRV_DEV_REGISTERED ((__force snd_device_state_t) 1)
73#define SNDRV_DEV_DISCONNECTED ((__force snd_device_state_t) 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070074
Takashi Iwai512bbd62005-11-17 13:51:18 +010075typedef int __bitwise snd_device_cmd_t;
76#define SNDRV_DEV_CMD_PRE ((__force snd_device_cmd_t) 0)
77#define SNDRV_DEV_CMD_NORMAL ((__force snd_device_cmd_t) 1)
78#define SNDRV_DEV_CMD_POST ((__force snd_device_cmd_t) 2)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079
Takashi Iwai512bbd62005-11-17 13:51:18 +010080struct snd_device;
Linus Torvalds1da177e2005-04-16 15:20:36 -070081
Takashi Iwai512bbd62005-11-17 13:51:18 +010082struct snd_device_ops {
83 int (*dev_free)(struct snd_device *dev);
84 int (*dev_register)(struct snd_device *dev);
85 int (*dev_disconnect)(struct snd_device *dev);
Takashi Iwai512bbd62005-11-17 13:51:18 +010086};
Linus Torvalds1da177e2005-04-16 15:20:36 -070087
Takashi Iwai512bbd62005-11-17 13:51:18 +010088struct snd_device {
Linus Torvalds1da177e2005-04-16 15:20:36 -070089 struct list_head list; /* list of registered devices */
Takashi Iwai512bbd62005-11-17 13:51:18 +010090 struct snd_card *card; /* card which holds this device */
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 snd_device_state_t state; /* state of the device */
92 snd_device_type_t type; /* device type */
93 void *device_data; /* device structure */
Takashi Iwai512bbd62005-11-17 13:51:18 +010094 struct snd_device_ops *ops; /* operations */
Linus Torvalds1da177e2005-04-16 15:20:36 -070095};
96
Takashi Iwai512bbd62005-11-17 13:51:18 +010097#define snd_device(n) list_entry(n, struct snd_device, list)
Linus Torvalds1da177e2005-04-16 15:20:36 -070098
99/* monitor files for graceful shutdown (hotplug) */
100
101struct snd_monitor_file {
102 struct file *file;
103 struct snd_monitor_file *next;
Karsten Wiesea9edfc62006-10-06 16:08:27 +0200104 const struct file_operations *disconnected_f_op;
105 struct list_head shutdown_list;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106};
107
Linus Torvalds1da177e2005-04-16 15:20:36 -0700108/* main structure for soundcard */
109
Takashi Iwai512bbd62005-11-17 13:51:18 +0100110struct snd_card {
Henrik Kretzschmard5750f62005-06-29 19:31:06 +0200111 int number; /* number of soundcard (index to
112 snd_cards) */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700113
114 char id[16]; /* id string of this card */
115 char driver[16]; /* driver name */
116 char shortname[32]; /* short name of this soundcard */
117 char longname[80]; /* name of this soundcard */
118 char mixername[80]; /* mixer name */
Takashi Iwaiff33f232008-10-07 11:38:09 +0200119 char components[128]; /* card components delimited with
Henrik Kretzschmard5750f62005-06-29 19:31:06 +0200120 space */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121 struct module *module; /* top-level module */
122
123 void *private_data; /* private data for soundcard */
Takashi Iwai512bbd62005-11-17 13:51:18 +0100124 void (*private_free) (struct snd_card *card); /* callback for freeing of
Henrik Kretzschmard5750f62005-06-29 19:31:06 +0200125 private data */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 struct list_head devices; /* devices */
127
128 unsigned int last_numid; /* last used numeric ID */
129 struct rw_semaphore controls_rwsem; /* controls list lock */
130 rwlock_t ctl_files_rwlock; /* ctl_files list lock */
131 int controls_count; /* count of all controls */
132 int user_ctl_count; /* count of all user controls */
133 struct list_head controls; /* all controls for this card */
134 struct list_head ctl_files; /* active control files */
135
Takashi Iwai512bbd62005-11-17 13:51:18 +0100136 struct snd_info_entry *proc_root; /* root for soundcard specific files */
137 struct snd_info_entry *proc_id; /* the card id */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138 struct proc_dir_entry *proc_root_link; /* number link to real id */
139
140 struct snd_monitor_file *files; /* all files associated to this card */
Henrik Kretzschmard5750f62005-06-29 19:31:06 +0200141 struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
142 state */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143 spinlock_t files_lock; /* lock the files for this card */
144 int shutdown; /* this card is going down */
Takashi Iwaic4614822006-06-23 14:38:23 +0200145 int free_on_last_close; /* free in context of file_release */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146 wait_queue_head_t shutdown_sleep;
Takashi Iwai7d2aae12007-01-26 12:40:31 +0100147 struct device *dev; /* device assigned to this card */
148#ifndef CONFIG_SYSFS_DEPRECATED
149 struct device *card_dev; /* cardX object for sysfs */
150#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
152#ifdef CONFIG_PM
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153 unsigned int power_state; /* power state */
Ingo Molnar1a60d4c2006-01-16 16:29:08 +0100154 struct mutex power_lock; /* power lock */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155 wait_queue_head_t power_sleep;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156#endif
157
158#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
Takashi Iwai512bbd62005-11-17 13:51:18 +0100159 struct snd_mixer_oss *mixer_oss;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700160 int mixer_oss_change_count;
161#endif
162};
163
164#ifdef CONFIG_PM
Takashi Iwai512bbd62005-11-17 13:51:18 +0100165static inline void snd_power_lock(struct snd_card *card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700166{
Ingo Molnar1a60d4c2006-01-16 16:29:08 +0100167 mutex_lock(&card->power_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700168}
169
Takashi Iwai512bbd62005-11-17 13:51:18 +0100170static inline void snd_power_unlock(struct snd_card *card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171{
Ingo Molnar1a60d4c2006-01-16 16:29:08 +0100172 mutex_unlock(&card->power_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173}
174
Takashi Iwai512bbd62005-11-17 13:51:18 +0100175static inline unsigned int snd_power_get_state(struct snd_card *card)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176{
177 return card->power_state;
178}
179
Takashi Iwai512bbd62005-11-17 13:51:18 +0100180static inline void snd_power_change_state(struct snd_card *card, unsigned int state)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181{
182 card->power_state = state;
183 wake_up(&card->power_sleep);
184}
Henrik Kretzschmard5750f62005-06-29 19:31:06 +0200185
186/* init.c */
Takashi Iwaicbac4b02006-03-27 12:38:07 +0200187int snd_power_wait(struct snd_card *card, unsigned int power_state);
Henrik Kretzschmard5750f62005-06-29 19:31:06 +0200188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189#else /* ! CONFIG_PM */
190
191#define snd_power_lock(card) do { (void)(card); } while (0)
192#define snd_power_unlock(card) do { (void)(card); } while (0)
Linus Torvalds6fdb94b2006-04-02 14:37:36 -0700193static inline int snd_power_wait(struct snd_card *card, unsigned int state) { return 0; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194#define snd_power_get_state(card) SNDRV_CTL_POWER_D0
195#define snd_power_change_state(card, state) do { (void)(card); } while (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
197#endif /* CONFIG_PM */
198
Takashi Iwai512bbd62005-11-17 13:51:18 +0100199struct snd_minor {
Clemens Ladisch2af677f2005-11-20 14:03:48 +0100200 int type; /* SNDRV_DEVICE_TYPE_XXX */
Clemens Ladisch6983b722005-11-20 14:05:49 +0100201 int card; /* card number */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 int device; /* device number */
Arjan van de Ven99ac48f2006-03-28 01:56:41 -0800203 const struct file_operations *f_ops; /* file operations */
Clemens Ladischf87135f2005-11-20 14:06:59 +0100204 void *private_data; /* private data for f_ops->open */
Greg Kroah-Hartmand80f19f2006-08-07 22:19:37 -0700205 struct device *dev; /* device for sysfs */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206};
207
Takashi Iwai7d2aae12007-01-26 12:40:31 +0100208/* return a device pointer linked to each sound device as a parent */
209static inline struct device *snd_card_get_device_link(struct snd_card *card)
210{
211#ifdef CONFIG_SYSFS_DEPRECATED
212 return card ? card->dev : NULL;
213#else
214 return card ? card->card_dev : NULL;
215#endif
216}
217
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218/* sound.c */
219
Clemens Ladischf1902862005-10-24 17:05:03 +0200220extern int snd_major;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221extern int snd_ecards_limit;
Greg Kroah-Hartmand80f19f2006-08-07 22:19:37 -0700222extern struct class *sound_class;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223
224void snd_request_card(int card);
225
Johannes Berg12b131c2006-10-05 15:05:34 +0200226int snd_register_device_for_dev(int type, struct snd_card *card,
227 int dev,
228 const struct file_operations *f_ops,
229 void *private_data,
230 const char *name,
231 struct device *device);
232
233/**
234 * snd_register_device - Register the ALSA device file for the card
235 * @type: the device type, SNDRV_DEVICE_TYPE_XXX
236 * @card: the card instance
237 * @dev: the device index
238 * @f_ops: the file operations
239 * @private_data: user pointer for f_ops->open()
240 * @name: the device file name
241 *
242 * Registers an ALSA device file for the given card.
243 * The operators have to be set in reg parameter.
244 *
245 * This function uses the card's device pointer to link to the
246 * correct &struct device.
247 *
248 * Returns zero if successful, or a negative error code on failure.
249 */
250static inline int snd_register_device(int type, struct snd_card *card, int dev,
251 const struct file_operations *f_ops,
252 void *private_data,
253 const char *name)
254{
255 return snd_register_device_for_dev(type, card, dev, f_ops,
256 private_data, name,
Takashi Iwaic2902c82007-02-09 16:25:48 +0100257 snd_card_get_device_link(card));
Johannes Berg12b131c2006-10-05 15:05:34 +0200258}
259
Takashi Iwai512bbd62005-11-17 13:51:18 +0100260int snd_unregister_device(int type, struct snd_card *card, int dev);
Clemens Ladischf87135f2005-11-20 14:06:59 +0100261void *snd_lookup_minor_data(unsigned int minor, int type);
Takashi Iwai9d19f482006-09-06 14:27:46 +0200262int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
Greg Kroah-Hartmand80f19f2006-08-07 22:19:37 -0700263 struct device_attribute *attr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264
265#ifdef CONFIG_SND_OSSEMUL
Clemens Ladisch2af677f2005-11-20 14:03:48 +0100266int snd_register_oss_device(int type, struct snd_card *card, int dev,
Arjan van de Ven99ac48f2006-03-28 01:56:41 -0800267 const struct file_operations *f_ops, void *private_data,
Clemens Ladischf87135f2005-11-20 14:06:59 +0100268 const char *name);
Takashi Iwai512bbd62005-11-17 13:51:18 +0100269int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
Clemens Ladischf87135f2005-11-20 14:06:59 +0100270void *snd_lookup_oss_minor_data(unsigned int minor, int type);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700271#endif
272
273int snd_minor_info_init(void);
274int snd_minor_info_done(void);
275
276/* sound_oss.c */
277
278#ifdef CONFIG_SND_OSSEMUL
279int snd_minor_info_oss_init(void);
280int snd_minor_info_oss_done(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281#else
Pavel Machekad5fada2008-04-14 18:31:35 +0200282static inline int snd_minor_info_oss_init(void) { return 0; }
283static inline int snd_minor_info_oss_done(void) { return 0; }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284#endif
285
286/* memory.c */
287
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
289int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);
290
291/* init.c */
292
Takashi Iwai512bbd62005-11-17 13:51:18 +0100293extern struct snd_card *snd_cards[SNDRV_CARDS];
Takashi Iwai746df942006-05-15 19:49:05 +0200294int snd_card_locked(int card);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
296#define SND_MIXER_OSS_NOTIFY_REGISTER 0
297#define SND_MIXER_OSS_NOTIFY_DISCONNECT 1
298#define SND_MIXER_OSS_NOTIFY_FREE 2
Takashi Iwai512bbd62005-11-17 13:51:18 +0100299extern int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300#endif
301
Takashi Iwai512bbd62005-11-17 13:51:18 +0100302struct snd_card *snd_card_new(int idx, const char *id,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700303 struct module *module, int extra_size);
Takashi Iwai512bbd62005-11-17 13:51:18 +0100304int snd_card_disconnect(struct snd_card *card);
305int snd_card_free(struct snd_card *card);
Takashi Iwaic4614822006-06-23 14:38:23 +0200306int snd_card_free_when_closed(struct snd_card *card);
Takashi Iwai512bbd62005-11-17 13:51:18 +0100307int snd_card_register(struct snd_card *card);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308int snd_card_info_init(void);
309int snd_card_info_done(void);
Takashi Iwai512bbd62005-11-17 13:51:18 +0100310int snd_component_add(struct snd_card *card, const char *component);
311int snd_card_file_add(struct snd_card *card, struct file *file);
312int snd_card_file_remove(struct snd_card *card, struct file *file);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313
314#ifndef snd_card_set_dev
Pavel Machekedab9382008-04-01 15:33:22 +0200315#define snd_card_set_dev(card, devptr) ((card)->dev = (devptr))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316#endif
317
318/* device.c */
319
Takashi Iwai512bbd62005-11-17 13:51:18 +0100320int snd_device_new(struct snd_card *card, snd_device_type_t type,
321 void *device_data, struct snd_device_ops *ops);
322int snd_device_register(struct snd_card *card, void *device_data);
323int snd_device_register_all(struct snd_card *card);
324int snd_device_disconnect(struct snd_card *card, void *device_data);
325int snd_device_disconnect_all(struct snd_card *card);
326int snd_device_free(struct snd_card *card, void *device_data);
327int snd_device_free_all(struct snd_card *card, snd_device_cmd_t cmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328
329/* isadma.c */
330
Al Viro276bd312005-08-23 22:45:06 +0100331#ifdef CONFIG_ISA_DMA_API
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332#define DMA_MODE_NO_ENABLE 0x0100
333
334void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
335void snd_dma_disable(unsigned long dma);
336unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
Al Viro276bd312005-08-23 22:45:06 +0100337#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339/* misc.c */
Takashi Iwaib709e572005-10-11 17:28:58 +0200340struct resource;
Takashi Iwaib1d57762005-10-10 11:56:31 +0200341void release_and_free_resource(struct resource *res);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343#ifdef CONFIG_SND_VERBOSE_PRINTK
344void snd_verbose_printk(const char *file, int line, const char *format, ...)
345 __attribute__ ((format (printf, 3, 4)));
346#endif
347#if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK)
348void snd_verbose_printd(const char *file, int line, const char *format, ...)
349 __attribute__ ((format (printf, 3, 4)));
350#endif
351
352/* --- */
353
354#ifdef CONFIG_SND_VERBOSE_PRINTK
355/**
356 * snd_printk - printk wrapper
357 * @fmt: format string
358 *
359 * Works like print() but prints the file and the line of the caller
360 * when configured with CONFIG_SND_VERBOSE_PRINTK.
361 */
362#define snd_printk(fmt, args...) \
363 snd_verbose_printk(__FILE__, __LINE__, fmt ,##args)
364#else
365#define snd_printk(fmt, args...) \
366 printk(fmt ,##args)
367#endif
368
369#ifdef CONFIG_SND_DEBUG
370
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371#ifdef CONFIG_SND_VERBOSE_PRINTK
372/**
373 * snd_printd - debug printk
Martin Waitz0863afb2006-01-09 20:53:55 -0800374 * @fmt: format string
Linus Torvalds1da177e2005-04-16 15:20:36 -0700375 *
Pavel Machekedab9382008-04-01 15:33:22 +0200376 * Works like snd_printk() for debugging purposes.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 * Ignored when CONFIG_SND_DEBUG is not set.
378 */
379#define snd_printd(fmt, args...) \
380 snd_verbose_printd(__FILE__, __LINE__, fmt ,##args)
381#else
382#define snd_printd(fmt, args...) \
383 printk(fmt ,##args)
384#endif
Takashi Iwai7c22f1a2005-10-10 11:46:31 +0200385
Takashi Iwaibdbecf52008-08-08 17:18:08 +0200386#define snd_BUG() WARN(1, "BUG?\n")
Takashi Iwai5ef03462008-08-08 17:06:01 +0200387#define snd_BUG_ON(cond) WARN((cond), "BUG? (%s)\n", __stringify(cond))
388
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389#else /* !CONFIG_SND_DEBUG */
390
391#define snd_printd(fmt, args...) /* nothing */
Takashi Iwai7c22f1a2005-10-10 11:46:31 +0200392#define snd_BUG() /* nothing */
Takashi Iwai5ef03462008-08-08 17:06:01 +0200393#define snd_BUG_ON(cond) ({/*(void)(cond);*/ 0;}) /* always false */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
395#endif /* CONFIG_SND_DEBUG */
396
Takashi Iwai62cf8722008-05-20 12:15:15 +0200397#ifdef CONFIG_SND_DEBUG_VERBOSE
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398/**
399 * snd_printdd - debug printk
400 * @format: format string
401 *
Pavel Machekedab9382008-04-01 15:33:22 +0200402 * Works like snd_printk() for debugging purposes.
Takashi Iwai62cf8722008-05-20 12:15:15 +0200403 * Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 */
405#define snd_printdd(format, args...) snd_printk(format, ##args)
406#else
407#define snd_printdd(format, args...) /* nothing */
408#endif
409
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411#define SNDRV_OSS_VERSION ((3<<16)|(8<<8)|(1<<4)|(0)) /* 3.8.1a */
412
413/* for easier backward-porting */
414#if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
415#ifndef gameport_set_dev_parent
416#define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
417#define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
418#define gameport_get_port_data(gp) (gp)->port_data
419#endif
420#endif
421
Takashi Iwaid9ea4722006-11-24 15:34:06 +0100422/* PCI quirk list helper */
423struct snd_pci_quirk {
424 unsigned short subvendor; /* PCI subvendor ID */
425 unsigned short subdevice; /* PCI subdevice ID */
426 int value; /* value */
Takashi Iwai62cf8722008-05-20 12:15:15 +0200427#ifdef CONFIG_SND_DEBUG_VERBOSE
Takashi Iwaid9ea4722006-11-24 15:34:06 +0100428 const char *name; /* name of the device (optional) */
429#endif
430};
431
432#define _SND_PCI_QUIRK_ID(vend,dev) \
433 .subvendor = (vend), .subdevice = (dev)
434#define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
Takashi Iwai62cf8722008-05-20 12:15:15 +0200435#ifdef CONFIG_SND_DEBUG_VERBOSE
Takashi Iwaid9ea4722006-11-24 15:34:06 +0100436#define SND_PCI_QUIRK(vend,dev,xname,val) \
437 {_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
438#else
439#define SND_PCI_QUIRK(vend,dev,xname,val) \
440 {_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}
441#endif
442
443const struct snd_pci_quirk *
444snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list);
445
446
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447#endif /* __SOUND_CORE_H */