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1#ifndef __SOUND_CORE_H
2#define __SOUND_CORE_H
3
4/*
5 * Main header file for the ALSA driver
6 * Copyright (c) 1994-2001 by Jaroslav Kysela <perex@perex.cz>
7 *
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
25#include <linux/module.h>
26#include <linux/sched.h> /* wake_up() */
27#include <linux/mutex.h> /* struct mutex */
28#include <linux/rwsem.h> /* struct rw_semaphore */
29#include <linux/pm.h> /* pm_message_t */
30#include <linux/device.h>
31#include <linux/stringify.h>
32
33/* 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
42/* forward declarations */
43#ifdef CONFIG_PCI
44struct pci_dev;
45#endif
46
47/* device allocation stuff */
48
49#define SNDRV_DEV_TYPE_RANGE_SIZE 0x1000
50
51typedef int __bitwise snd_device_type_t;
52#define SNDRV_DEV_TOPLEVEL ((__force snd_device_type_t) 0)
53#define SNDRV_DEV_CONTROL ((__force snd_device_type_t) 1)
54#define SNDRV_DEV_LOWLEVEL_PRE ((__force snd_device_type_t) 2)
55#define SNDRV_DEV_LOWLEVEL_NORMAL ((__force snd_device_type_t) 0x1000)
56#define SNDRV_DEV_PCM ((__force snd_device_type_t) 0x1001)
57#define SNDRV_DEV_RAWMIDI ((__force snd_device_type_t) 0x1002)
58#define SNDRV_DEV_TIMER ((__force snd_device_type_t) 0x1003)
59#define SNDRV_DEV_SEQUENCER ((__force snd_device_type_t) 0x1004)
60#define SNDRV_DEV_HWDEP ((__force snd_device_type_t) 0x1005)
61#define SNDRV_DEV_INFO ((__force snd_device_type_t) 0x1006)
62#define SNDRV_DEV_BUS ((__force snd_device_type_t) 0x1007)
63#define SNDRV_DEV_CODEC ((__force snd_device_type_t) 0x1008)
64#define SNDRV_DEV_JACK ((__force snd_device_type_t) 0x1009)
65#define SNDRV_DEV_LOWLEVEL ((__force snd_device_type_t) 0x2000)
66
67typedef int __bitwise snd_device_state_t;
68#define SNDRV_DEV_BUILD ((__force snd_device_state_t) 0)
69#define SNDRV_DEV_REGISTERED ((__force snd_device_state_t) 1)
70#define SNDRV_DEV_DISCONNECTED ((__force snd_device_state_t) 2)
71
72typedef int __bitwise snd_device_cmd_t;
73#define SNDRV_DEV_CMD_PRE ((__force snd_device_cmd_t) 0)
74#define SNDRV_DEV_CMD_NORMAL ((__force snd_device_cmd_t) 1)
75#define SNDRV_DEV_CMD_POST ((__force snd_device_cmd_t) 2)
76
77struct snd_device;
78
79struct snd_device_ops {
80 int (*dev_free)(struct snd_device *dev);
81 int (*dev_register)(struct snd_device *dev);
82 int (*dev_disconnect)(struct snd_device *dev);
83};
84
85struct snd_device {
86 struct list_head list; /* list of registered devices */
87 struct snd_card *card; /* card which holds this device */
88 snd_device_state_t state; /* state of the device */
89 snd_device_type_t type; /* device type */
90 void *device_data; /* device structure */
91 struct snd_device_ops *ops; /* operations */
92};
93
94#define snd_device(n) list_entry(n, struct snd_device, list)
95
96/* main structure for soundcard */
97
98struct snd_card {
99 int number; /* number of soundcard (index to
100 snd_cards) */
101
102 char id[16]; /* id string of this card */
103 char driver[16]; /* driver name */
104 char shortname[32]; /* short name of this soundcard */
105 char longname[80]; /* name of this soundcard */
106 char mixername[80]; /* mixer name */
107 char components[128]; /* card components delimited with
108 space */
109 struct module *module; /* top-level module */
110
111 void *private_data; /* private data for soundcard */
112 void (*private_free) (struct snd_card *card); /* callback for freeing of
113 private data */
114 struct list_head devices; /* devices */
115
116 unsigned int last_numid; /* last used numeric ID */
117 struct rw_semaphore controls_rwsem; /* controls list lock */
118 rwlock_t ctl_files_rwlock; /* ctl_files list lock */
119 int controls_count; /* count of all controls */
120 int user_ctl_count; /* count of all user controls */
121 struct list_head controls; /* all controls for this card */
122 struct list_head ctl_files; /* active control files */
123
124 struct snd_info_entry *proc_root; /* root for soundcard specific files */
125 struct snd_info_entry *proc_id; /* the card id */
126 struct proc_dir_entry *proc_root_link; /* number link to real id */
127
128 struct list_head files_list; /* all files associated to this card */
129 struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
130 state */
131 spinlock_t files_lock; /* lock the files for this card */
132 int shutdown; /* this card is going down */
133 int free_on_last_close; /* free in context of file_release */
134 wait_queue_head_t shutdown_sleep;
135 struct device *dev; /* device assigned to this card */
136 struct device *card_dev; /* cardX object for sysfs */
137
138#ifdef CONFIG_PM
139 unsigned int power_state; /* power state */
140 struct mutex power_lock; /* power lock */
141 wait_queue_head_t power_sleep;
142#endif
143
144#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
145 struct snd_mixer_oss *mixer_oss;
146 int mixer_oss_change_count;
147#endif
148};
149
150#ifdef CONFIG_PM
151static inline void snd_power_lock(struct snd_card *card)
152{
153 mutex_lock(&card->power_lock);
154}
155
156static inline void snd_power_unlock(struct snd_card *card)
157{
158 mutex_unlock(&card->power_lock);
159}
160
161static inline unsigned int snd_power_get_state(struct snd_card *card)
162{
163 return card->power_state;
164}
165
166static inline void snd_power_change_state(struct snd_card *card, unsigned int state)
167{
168 card->power_state = state;
169 wake_up(&card->power_sleep);
170}
171
172/* init.c */
173int snd_power_wait(struct snd_card *card, unsigned int power_state);
174
175#else /* ! CONFIG_PM */
176
177#define snd_power_lock(card) do { (void)(card); } while (0)
178#define snd_power_unlock(card) do { (void)(card); } while (0)
179static inline int snd_power_wait(struct snd_card *card, unsigned int state) { return 0; }
180#define snd_power_get_state(card) ({ (void)(card); SNDRV_CTL_POWER_D0; })
181#define snd_power_change_state(card, state) do { (void)(card); } while (0)
182
183#endif /* CONFIG_PM */
184
185struct snd_minor {
186 int type; /* SNDRV_DEVICE_TYPE_XXX */
187 int card; /* card number */
188 int device; /* device number */
189 const struct file_operations *f_ops; /* file operations */
190 void *private_data; /* private data for f_ops->open */
191 struct device *dev; /* device for sysfs */
192};
193
194/* return a device pointer linked to each sound device as a parent */
195static inline struct device *snd_card_get_device_link(struct snd_card *card)
196{
197 return card ? card->card_dev : NULL;
198}
199
200/* sound.c */
201
202extern int snd_major;
203extern int snd_ecards_limit;
204extern struct class *sound_class;
205
206void snd_request_card(int card);
207
208int snd_register_device_for_dev(int type, struct snd_card *card,
209 int dev,
210 const struct file_operations *f_ops,
211 void *private_data,
212 const char *name,
213 struct device *device);
214
215/**
216 * snd_register_device - Register the ALSA device file for the card
217 * @type: the device type, SNDRV_DEVICE_TYPE_XXX
218 * @card: the card instance
219 * @dev: the device index
220 * @f_ops: the file operations
221 * @private_data: user pointer for f_ops->open()
222 * @name: the device file name
223 *
224 * Registers an ALSA device file for the given card.
225 * The operators have to be set in reg parameter.
226 *
227 * This function uses the card's device pointer to link to the
228 * correct &struct device.
229 *
230 * Returns zero if successful, or a negative error code on failure.
231 */
232static inline int snd_register_device(int type, struct snd_card *card, int dev,
233 const struct file_operations *f_ops,
234 void *private_data,
235 const char *name)
236{
237 return snd_register_device_for_dev(type, card, dev, f_ops,
238 private_data, name,
239 snd_card_get_device_link(card));
240}
241
242int snd_unregister_device(int type, struct snd_card *card, int dev);
243void *snd_lookup_minor_data(unsigned int minor, int type);
244int snd_add_device_sysfs_file(int type, struct snd_card *card, int dev,
245 struct device_attribute *attr);
246
247#ifdef CONFIG_SND_OSSEMUL
248int snd_register_oss_device(int type, struct snd_card *card, int dev,
249 const struct file_operations *f_ops, void *private_data,
250 const char *name);
251int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
252void *snd_lookup_oss_minor_data(unsigned int minor, int type);
253#endif
254
255int snd_minor_info_init(void);
256int snd_minor_info_done(void);
257
258/* sound_oss.c */
259
260#ifdef CONFIG_SND_OSSEMUL
261int snd_minor_info_oss_init(void);
262int snd_minor_info_oss_done(void);
263#else
264static inline int snd_minor_info_oss_init(void) { return 0; }
265static inline int snd_minor_info_oss_done(void) { return 0; }
266#endif
267
268/* memory.c */
269
270int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
271int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);
272
273/* init.c */
274
275extern struct snd_card *snd_cards[SNDRV_CARDS];
276int snd_card_locked(int card);
277#if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE)
278#define SND_MIXER_OSS_NOTIFY_REGISTER 0
279#define SND_MIXER_OSS_NOTIFY_DISCONNECT 1
280#define SND_MIXER_OSS_NOTIFY_FREE 2
281extern int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int cmd);
282#endif
283
284int snd_card_create(int idx, const char *id,
285 struct module *module, int extra_size,
286 struct snd_card **card_ret);
287
288int snd_card_disconnect(struct snd_card *card);
289int snd_card_free(struct snd_card *card);
290int snd_card_free_when_closed(struct snd_card *card);
291void snd_card_set_id(struct snd_card *card, const char *id);
292int snd_card_register(struct snd_card *card);
293int snd_card_info_init(void);
294int snd_card_info_done(void);
295int snd_component_add(struct snd_card *card, const char *component);
296int snd_card_file_add(struct snd_card *card, struct file *file);
297int snd_card_file_remove(struct snd_card *card, struct file *file);
298
299#define snd_card_set_dev(card, devptr) ((card)->dev = (devptr))
300
301/* device.c */
302
303int snd_device_new(struct snd_card *card, snd_device_type_t type,
304 void *device_data, struct snd_device_ops *ops);
305int snd_device_register(struct snd_card *card, void *device_data);
306int snd_device_register_all(struct snd_card *card);
307int snd_device_disconnect(struct snd_card *card, void *device_data);
308int snd_device_disconnect_all(struct snd_card *card);
309int snd_device_free(struct snd_card *card, void *device_data);
310int snd_device_free_all(struct snd_card *card, snd_device_cmd_t cmd);
311
312/* isadma.c */
313
314#ifdef CONFIG_ISA_DMA_API
315#define DMA_MODE_NO_ENABLE 0x0100
316
317void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
318void snd_dma_disable(unsigned long dma);
319unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
320#endif
321
322/* misc.c */
323struct resource;
324void release_and_free_resource(struct resource *res);
325
326/* --- */
327
328#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
329void __snd_printk(unsigned int level, const char *file, int line,
330 const char *format, ...)
331 __attribute__ ((format (printf, 4, 5)));
332#else
333#define __snd_printk(level, file, line, format, args...) \
334 printk(format, ##args)
335#endif
336
337/**
338 * snd_printk - printk wrapper
339 * @fmt: format string
340 *
341 * Works like printk() but prints the file and the line of the caller
342 * when configured with CONFIG_SND_VERBOSE_PRINTK.
343 */
344#define snd_printk(fmt, args...) \
345 __snd_printk(0, __FILE__, __LINE__, fmt, ##args)
346
347#ifdef CONFIG_SND_DEBUG
348/**
349 * snd_printd - debug printk
350 * @fmt: format string
351 *
352 * Works like snd_printk() for debugging purposes.
353 * Ignored when CONFIG_SND_DEBUG is not set.
354 */
355#define snd_printd(fmt, args...) \
356 __snd_printk(1, __FILE__, __LINE__, fmt, ##args)
357
358/**
359 * snd_BUG - give a BUG warning message and stack trace
360 *
361 * Calls WARN() if CONFIG_SND_DEBUG is set.
362 * Ignored when CONFIG_SND_DEBUG is not set.
363 */
364#define snd_BUG() WARN(1, "BUG?\n")
365
366/**
367 * snd_BUG_ON - debugging check macro
368 * @cond: condition to evaluate
369 *
370 * When CONFIG_SND_DEBUG is set, this macro evaluates the given condition,
371 * and call WARN() and returns the value if it's non-zero.
372 *
373 * When CONFIG_SND_DEBUG is not set, this just returns zero, and the given
374 * condition is ignored.
375 *
376 * NOTE: the argument won't be evaluated at all when CONFIG_SND_DEBUG=n.
377 * Thus, don't put any statement that influences on the code behavior,
378 * such as pre/post increment, to the argument of this macro.
379 * If you want to evaluate and give a warning, use standard WARN_ON().
380 */
381#define snd_BUG_ON(cond) WARN((cond), "BUG? (%s)\n", __stringify(cond))
382
383#else /* !CONFIG_SND_DEBUG */
384
385#define snd_printd(fmt, args...) do { } while (0)
386#define snd_BUG() do { } while (0)
387static inline int __snd_bug_on(int cond)
388{
389 return 0;
390}
391#define snd_BUG_ON(cond) __snd_bug_on(0 && (cond)) /* always false */
392
393#endif /* CONFIG_SND_DEBUG */
394
395#ifdef CONFIG_SND_DEBUG_VERBOSE
396/**
397 * snd_printdd - debug printk
398 * @format: format string
399 *
400 * Works like snd_printk() for debugging purposes.
401 * Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
402 */
403#define snd_printdd(format, args...) \
404 __snd_printk(2, __FILE__, __LINE__, format, ##args)
405#else
406#define snd_printdd(format, args...) do { } while (0)
407#endif
408
409
410#define SNDRV_OSS_VERSION ((3<<16)|(8<<8)|(1<<4)|(0)) /* 3.8.1a */
411
412/* for easier backward-porting */
413#if defined(CONFIG_GAMEPORT) || defined(CONFIG_GAMEPORT_MODULE)
414#define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
415#define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
416#define gameport_get_port_data(gp) (gp)->port_data
417#endif
418
419/* PCI quirk list helper */
420struct snd_pci_quirk {
421 unsigned short subvendor; /* PCI subvendor ID */
422 unsigned short subdevice; /* PCI subdevice ID */
423 unsigned short subdevice_mask; /* bitmask to match */
424 int value; /* value */
425#ifdef CONFIG_SND_DEBUG_VERBOSE
426 const char *name; /* name of the device (optional) */
427#endif
428};
429
430#define _SND_PCI_QUIRK_ID_MASK(vend, mask, dev) \
431 .subvendor = (vend), .subdevice = (dev), .subdevice_mask = (mask)
432#define _SND_PCI_QUIRK_ID(vend, dev) \
433 _SND_PCI_QUIRK_ID_MASK(vend, 0xffff, dev)
434#define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
435#ifdef CONFIG_SND_DEBUG_VERBOSE
436#define SND_PCI_QUIRK(vend,dev,xname,val) \
437 {_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
438#define SND_PCI_QUIRK_VENDOR(vend, xname, val) \
439 {_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val), .name = (xname)}
440#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val) \
441 {_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), \
442 .value = (val), .name = (xname)}
443#else
444#define SND_PCI_QUIRK(vend,dev,xname,val) \
445 {_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}
446#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val) \
447 {_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), .value = (val)}
448#define SND_PCI_QUIRK_VENDOR(vend, xname, val) \
449 {_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val)}
450#endif
451
452const struct snd_pci_quirk *
453snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list);
454
455const struct snd_pci_quirk *
456snd_pci_quirk_lookup_id(u16 vendor, u16 device,
457 const struct snd_pci_quirk *list);
458
459#endif /* __SOUND_CORE_H */
1#ifndef __SOUND_CORE_H
2#define __SOUND_CORE_H
3
4/*
5 * Main header file for the ALSA driver
6 * Copyright (c) 1994-2001 by Jaroslav Kysela <perex@perex.cz>
7 *
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
25#include <linux/device.h>
26#include <linux/sched.h> /* wake_up() */
27#include <linux/mutex.h> /* struct mutex */
28#include <linux/rwsem.h> /* struct rw_semaphore */
29#include <linux/pm.h> /* pm_message_t */
30#include <linux/stringify.h>
31#include <linux/printk.h>
32
33/* number of supported soundcards */
34#ifdef CONFIG_SND_DYNAMIC_MINORS
35#define SNDRV_CARDS CONFIG_SND_MAX_CARDS
36#else
37#define SNDRV_CARDS 8 /* don't change - minor numbers */
38#endif
39
40#define CONFIG_SND_MAJOR 116 /* standard configuration */
41
42/* forward declarations */
43struct pci_dev;
44struct module;
45struct completion;
46
47/* device allocation stuff */
48
49/* type of the object used in snd_device_*()
50 * this also defines the calling order
51 */
52enum snd_device_type {
53 SNDRV_DEV_LOWLEVEL,
54 SNDRV_DEV_CONTROL,
55 SNDRV_DEV_INFO,
56 SNDRV_DEV_BUS,
57 SNDRV_DEV_CODEC,
58 SNDRV_DEV_PCM,
59 SNDRV_DEV_COMPRESS,
60 SNDRV_DEV_RAWMIDI,
61 SNDRV_DEV_TIMER,
62 SNDRV_DEV_SEQUENCER,
63 SNDRV_DEV_HWDEP,
64 SNDRV_DEV_JACK,
65};
66
67enum snd_device_state {
68 SNDRV_DEV_BUILD,
69 SNDRV_DEV_REGISTERED,
70 SNDRV_DEV_DISCONNECTED,
71};
72
73struct snd_device;
74
75struct snd_device_ops {
76 int (*dev_free)(struct snd_device *dev);
77 int (*dev_register)(struct snd_device *dev);
78 int (*dev_disconnect)(struct snd_device *dev);
79};
80
81struct snd_device {
82 struct list_head list; /* list of registered devices */
83 struct snd_card *card; /* card which holds this device */
84 enum snd_device_state state; /* state of the device */
85 enum snd_device_type type; /* device type */
86 void *device_data; /* device structure */
87 struct snd_device_ops *ops; /* operations */
88};
89
90#define snd_device(n) list_entry(n, struct snd_device, list)
91
92/* main structure for soundcard */
93
94struct snd_card {
95 int number; /* number of soundcard (index to
96 snd_cards) */
97
98 char id[16]; /* id string of this card */
99 char driver[16]; /* driver name */
100 char shortname[32]; /* short name of this soundcard */
101 char longname[80]; /* name of this soundcard */
102 char irq_descr[32]; /* Interrupt description */
103 char mixername[80]; /* mixer name */
104 char components[128]; /* card components delimited with
105 space */
106 struct module *module; /* top-level module */
107
108 void *private_data; /* private data for soundcard */
109 void (*private_free) (struct snd_card *card); /* callback for freeing of
110 private data */
111 struct list_head devices; /* devices */
112
113 struct device ctl_dev; /* control device */
114 unsigned int last_numid; /* last used numeric ID */
115 struct rw_semaphore controls_rwsem; /* controls list lock */
116 rwlock_t ctl_files_rwlock; /* ctl_files list lock */
117 int controls_count; /* count of all controls */
118 int user_ctl_count; /* count of all user controls */
119 struct list_head controls; /* all controls for this card */
120 struct list_head ctl_files; /* active control files */
121
122 struct snd_info_entry *proc_root; /* root for soundcard specific files */
123 struct snd_info_entry *proc_id; /* the card id */
124 struct proc_dir_entry *proc_root_link; /* number link to real id */
125
126 struct list_head files_list; /* all files associated to this card */
127 struct snd_shutdown_f_ops *s_f_ops; /* file operations in the shutdown
128 state */
129 spinlock_t files_lock; /* lock the files for this card */
130 int shutdown; /* this card is going down */
131 struct completion *release_completion;
132 struct device *dev; /* device assigned to this card */
133 struct device card_dev; /* cardX object for sysfs */
134 const struct attribute_group *dev_groups[4]; /* assigned sysfs attr */
135 bool registered; /* card_dev is registered? */
136 wait_queue_head_t remove_sleep;
137
138#ifdef CONFIG_PM
139 unsigned int power_state; /* power state */
140 wait_queue_head_t power_sleep;
141#endif
142
143#if IS_ENABLED(CONFIG_SND_MIXER_OSS)
144 struct snd_mixer_oss *mixer_oss;
145 int mixer_oss_change_count;
146#endif
147};
148
149#define dev_to_snd_card(p) container_of(p, struct snd_card, card_dev)
150
151#ifdef CONFIG_PM
152static inline unsigned int snd_power_get_state(struct snd_card *card)
153{
154 return card->power_state;
155}
156
157static inline void snd_power_change_state(struct snd_card *card, unsigned int state)
158{
159 card->power_state = state;
160 wake_up(&card->power_sleep);
161}
162
163/* init.c */
164int snd_power_wait(struct snd_card *card, unsigned int power_state);
165
166#else /* ! CONFIG_PM */
167
168static inline int snd_power_wait(struct snd_card *card, unsigned int state) { return 0; }
169#define snd_power_get_state(card) ({ (void)(card); SNDRV_CTL_POWER_D0; })
170#define snd_power_change_state(card, state) do { (void)(card); } while (0)
171
172#endif /* CONFIG_PM */
173
174struct snd_minor {
175 int type; /* SNDRV_DEVICE_TYPE_XXX */
176 int card; /* card number */
177 int device; /* device number */
178 const struct file_operations *f_ops; /* file operations */
179 void *private_data; /* private data for f_ops->open */
180 struct device *dev; /* device for sysfs */
181 struct snd_card *card_ptr; /* assigned card instance */
182};
183
184/* return a device pointer linked to each sound device as a parent */
185static inline struct device *snd_card_get_device_link(struct snd_card *card)
186{
187 return card ? &card->card_dev : NULL;
188}
189
190/* sound.c */
191
192extern int snd_major;
193extern int snd_ecards_limit;
194extern struct class *sound_class;
195
196void snd_request_card(int card);
197
198void snd_device_initialize(struct device *dev, struct snd_card *card);
199
200int snd_register_device(int type, struct snd_card *card, int dev,
201 const struct file_operations *f_ops,
202 void *private_data, struct device *device);
203int snd_unregister_device(struct device *dev);
204void *snd_lookup_minor_data(unsigned int minor, int type);
205
206#ifdef CONFIG_SND_OSSEMUL
207int snd_register_oss_device(int type, struct snd_card *card, int dev,
208 const struct file_operations *f_ops, void *private_data);
209int snd_unregister_oss_device(int type, struct snd_card *card, int dev);
210void *snd_lookup_oss_minor_data(unsigned int minor, int type);
211#endif
212
213int snd_minor_info_init(void);
214
215/* sound_oss.c */
216
217#ifdef CONFIG_SND_OSSEMUL
218int snd_minor_info_oss_init(void);
219#else
220static inline int snd_minor_info_oss_init(void) { return 0; }
221#endif
222
223/* memory.c */
224
225int copy_to_user_fromio(void __user *dst, const volatile void __iomem *src, size_t count);
226int copy_from_user_toio(volatile void __iomem *dst, const void __user *src, size_t count);
227
228/* init.c */
229
230extern struct snd_card *snd_cards[SNDRV_CARDS];
231int snd_card_locked(int card);
232#if IS_ENABLED(CONFIG_SND_MIXER_OSS)
233#define SND_MIXER_OSS_NOTIFY_REGISTER 0
234#define SND_MIXER_OSS_NOTIFY_DISCONNECT 1
235#define SND_MIXER_OSS_NOTIFY_FREE 2
236extern int (*snd_mixer_oss_notify_callback)(struct snd_card *card, int cmd);
237#endif
238
239int snd_card_new(struct device *parent, int idx, const char *xid,
240 struct module *module, int extra_size,
241 struct snd_card **card_ret);
242
243int snd_card_disconnect(struct snd_card *card);
244void snd_card_disconnect_sync(struct snd_card *card);
245int snd_card_free(struct snd_card *card);
246int snd_card_free_when_closed(struct snd_card *card);
247void snd_card_set_id(struct snd_card *card, const char *id);
248int snd_card_register(struct snd_card *card);
249int snd_card_info_init(void);
250int snd_card_add_dev_attr(struct snd_card *card,
251 const struct attribute_group *group);
252int snd_component_add(struct snd_card *card, const char *component);
253int snd_card_file_add(struct snd_card *card, struct file *file);
254int snd_card_file_remove(struct snd_card *card, struct file *file);
255#define snd_card_unref(card) put_device(&(card)->card_dev)
256
257#define snd_card_set_dev(card, devptr) ((card)->dev = (devptr))
258
259/* device.c */
260
261int snd_device_new(struct snd_card *card, enum snd_device_type type,
262 void *device_data, struct snd_device_ops *ops);
263int snd_device_register(struct snd_card *card, void *device_data);
264int snd_device_register_all(struct snd_card *card);
265void snd_device_disconnect(struct snd_card *card, void *device_data);
266void snd_device_disconnect_all(struct snd_card *card);
267void snd_device_free(struct snd_card *card, void *device_data);
268void snd_device_free_all(struct snd_card *card);
269
270/* isadma.c */
271
272#ifdef CONFIG_ISA_DMA_API
273#define DMA_MODE_NO_ENABLE 0x0100
274
275void snd_dma_program(unsigned long dma, unsigned long addr, unsigned int size, unsigned short mode);
276void snd_dma_disable(unsigned long dma);
277unsigned int snd_dma_pointer(unsigned long dma, unsigned int size);
278#endif
279
280/* misc.c */
281struct resource;
282void release_and_free_resource(struct resource *res);
283
284/* --- */
285
286/* sound printk debug levels */
287enum {
288 SND_PR_ALWAYS,
289 SND_PR_DEBUG,
290 SND_PR_VERBOSE,
291};
292
293#if defined(CONFIG_SND_DEBUG) || defined(CONFIG_SND_VERBOSE_PRINTK)
294__printf(4, 5)
295void __snd_printk(unsigned int level, const char *file, int line,
296 const char *format, ...);
297#else
298#define __snd_printk(level, file, line, format, ...) \
299 printk(format, ##__VA_ARGS__)
300#endif
301
302/**
303 * snd_printk - printk wrapper
304 * @fmt: format string
305 *
306 * Works like printk() but prints the file and the line of the caller
307 * when configured with CONFIG_SND_VERBOSE_PRINTK.
308 */
309#define snd_printk(fmt, ...) \
310 __snd_printk(0, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
311
312#ifdef CONFIG_SND_DEBUG
313/**
314 * snd_printd - debug printk
315 * @fmt: format string
316 *
317 * Works like snd_printk() for debugging purposes.
318 * Ignored when CONFIG_SND_DEBUG is not set.
319 */
320#define snd_printd(fmt, ...) \
321 __snd_printk(1, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
322#define _snd_printd(level, fmt, ...) \
323 __snd_printk(level, __FILE__, __LINE__, fmt, ##__VA_ARGS__)
324
325/**
326 * snd_BUG - give a BUG warning message and stack trace
327 *
328 * Calls WARN() if CONFIG_SND_DEBUG is set.
329 * Ignored when CONFIG_SND_DEBUG is not set.
330 */
331#define snd_BUG() WARN(1, "BUG?\n")
332
333/**
334 * Suppress high rates of output when CONFIG_SND_DEBUG is enabled.
335 */
336#define snd_printd_ratelimit() printk_ratelimit()
337
338/**
339 * snd_BUG_ON - debugging check macro
340 * @cond: condition to evaluate
341 *
342 * Has the same behavior as WARN_ON when CONFIG_SND_DEBUG is set,
343 * otherwise just evaluates the conditional and returns the value.
344 */
345#define snd_BUG_ON(cond) WARN_ON((cond))
346
347#else /* !CONFIG_SND_DEBUG */
348
349__printf(1, 2)
350static inline void snd_printd(const char *format, ...) {}
351__printf(2, 3)
352static inline void _snd_printd(int level, const char *format, ...) {}
353
354#define snd_BUG() do { } while (0)
355
356#define snd_BUG_ON(condition) ({ \
357 int __ret_warn_on = !!(condition); \
358 unlikely(__ret_warn_on); \
359})
360
361static inline bool snd_printd_ratelimit(void) { return false; }
362
363#endif /* CONFIG_SND_DEBUG */
364
365#ifdef CONFIG_SND_DEBUG_VERBOSE
366/**
367 * snd_printdd - debug printk
368 * @format: format string
369 *
370 * Works like snd_printk() for debugging purposes.
371 * Ignored when CONFIG_SND_DEBUG_VERBOSE is not set.
372 */
373#define snd_printdd(format, ...) \
374 __snd_printk(2, __FILE__, __LINE__, format, ##__VA_ARGS__)
375#else
376__printf(1, 2)
377static inline void snd_printdd(const char *format, ...) {}
378#endif
379
380
381#define SNDRV_OSS_VERSION ((3<<16)|(8<<8)|(1<<4)|(0)) /* 3.8.1a */
382
383/* for easier backward-porting */
384#if IS_ENABLED(CONFIG_GAMEPORT)
385#define gameport_set_dev_parent(gp,xdev) ((gp)->dev.parent = (xdev))
386#define gameport_set_port_data(gp,r) ((gp)->port_data = (r))
387#define gameport_get_port_data(gp) (gp)->port_data
388#endif
389
390/* PCI quirk list helper */
391struct snd_pci_quirk {
392 unsigned short subvendor; /* PCI subvendor ID */
393 unsigned short subdevice; /* PCI subdevice ID */
394 unsigned short subdevice_mask; /* bitmask to match */
395 int value; /* value */
396#ifdef CONFIG_SND_DEBUG_VERBOSE
397 const char *name; /* name of the device (optional) */
398#endif
399};
400
401#define _SND_PCI_QUIRK_ID_MASK(vend, mask, dev) \
402 .subvendor = (vend), .subdevice = (dev), .subdevice_mask = (mask)
403#define _SND_PCI_QUIRK_ID(vend, dev) \
404 _SND_PCI_QUIRK_ID_MASK(vend, 0xffff, dev)
405#define SND_PCI_QUIRK_ID(vend,dev) {_SND_PCI_QUIRK_ID(vend, dev)}
406#ifdef CONFIG_SND_DEBUG_VERBOSE
407#define SND_PCI_QUIRK(vend,dev,xname,val) \
408 {_SND_PCI_QUIRK_ID(vend, dev), .value = (val), .name = (xname)}
409#define SND_PCI_QUIRK_VENDOR(vend, xname, val) \
410 {_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val), .name = (xname)}
411#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val) \
412 {_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), \
413 .value = (val), .name = (xname)}
414#define snd_pci_quirk_name(q) ((q)->name)
415#else
416#define SND_PCI_QUIRK(vend,dev,xname,val) \
417 {_SND_PCI_QUIRK_ID(vend, dev), .value = (val)}
418#define SND_PCI_QUIRK_MASK(vend, mask, dev, xname, val) \
419 {_SND_PCI_QUIRK_ID_MASK(vend, mask, dev), .value = (val)}
420#define SND_PCI_QUIRK_VENDOR(vend, xname, val) \
421 {_SND_PCI_QUIRK_ID_MASK(vend, 0, 0), .value = (val)}
422#define snd_pci_quirk_name(q) ""
423#endif
424
425#ifdef CONFIG_PCI
426const struct snd_pci_quirk *
427snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list);
428
429const struct snd_pci_quirk *
430snd_pci_quirk_lookup_id(u16 vendor, u16 device,
431 const struct snd_pci_quirk *list);
432#else
433static inline const struct snd_pci_quirk *
434snd_pci_quirk_lookup(struct pci_dev *pci, const struct snd_pci_quirk *list)
435{
436 return NULL;
437}
438
439static inline const struct snd_pci_quirk *
440snd_pci_quirk_lookup_id(u16 vendor, u16 device,
441 const struct snd_pci_quirk *list)
442{
443 return NULL;
444}
445#endif
446
447#endif /* __SOUND_CORE_H */