1#ifndef __SOUND_PCM_H
2#define __SOUND_PCM_H
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26#include <sound/asound.h>
27#include <sound/memalloc.h>
28#include <sound/minors.h>
29#include <linux/poll.h>
30#include <linux/mm.h>
31#include <linux/bitops.h>
32#include <linux/pm_qos.h>
33
34#define snd_pcm_substream_chip(substream) ((substream)->private_data)
35#define snd_pcm_chip(pcm) ((pcm)->private_data)
36
37#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
38#include <sound/pcm_oss.h>
39#endif
40
41
42
43
44
45struct snd_pcm_hardware {
46 unsigned int info;
47 u64 formats;
48 unsigned int rates;
49 unsigned int rate_min;
50 unsigned int rate_max;
51 unsigned int channels_min;
52 unsigned int channels_max;
53 size_t buffer_bytes_max;
54 size_t period_bytes_min;
55 size_t period_bytes_max;
56 unsigned int periods_min;
57 unsigned int periods_max;
58 size_t fifo_size;
59};
60
61struct snd_pcm_substream;
62
63struct snd_pcm_audio_tstamp_config;
64struct snd_pcm_audio_tstamp_report;
65
66struct snd_pcm_ops {
67 int (*open)(struct snd_pcm_substream *substream);
68 int (*close)(struct snd_pcm_substream *substream);
69 int (*ioctl)(struct snd_pcm_substream * substream,
70 unsigned int cmd, void *arg);
71 int (*hw_params)(struct snd_pcm_substream *substream,
72 struct snd_pcm_hw_params *params);
73 int (*hw_free)(struct snd_pcm_substream *substream);
74 int (*prepare)(struct snd_pcm_substream *substream);
75 int (*trigger)(struct snd_pcm_substream *substream, int cmd);
76 snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *substream);
77 int (*get_time_info)(struct snd_pcm_substream *substream,
78 struct timespec *system_ts, struct timespec *audio_ts,
79 struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
80 struct snd_pcm_audio_tstamp_report *audio_tstamp_report);
81 int (*copy)(struct snd_pcm_substream *substream, int channel,
82 snd_pcm_uframes_t pos,
83 void __user *buf, snd_pcm_uframes_t count);
84 int (*silence)(struct snd_pcm_substream *substream, int channel,
85 snd_pcm_uframes_t pos, snd_pcm_uframes_t count);
86 struct page *(*page)(struct snd_pcm_substream *substream,
87 unsigned long offset);
88 int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma);
89 int (*ack)(struct snd_pcm_substream *substream);
90};
91
92
93
94
95
96#if defined(CONFIG_SND_DYNAMIC_MINORS)
97#define SNDRV_PCM_DEVICES (SNDRV_OS_MINORS-2)
98#else
99#define SNDRV_PCM_DEVICES 8
100#endif
101
102#define SNDRV_PCM_IOCTL1_RESET 0
103#define SNDRV_PCM_IOCTL1_INFO 1
104#define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2
105#define SNDRV_PCM_IOCTL1_GSTATE 3
106#define SNDRV_PCM_IOCTL1_FIFO_SIZE 4
107
108#define SNDRV_PCM_TRIGGER_STOP 0
109#define SNDRV_PCM_TRIGGER_START 1
110#define SNDRV_PCM_TRIGGER_PAUSE_PUSH 3
111#define SNDRV_PCM_TRIGGER_PAUSE_RELEASE 4
112#define SNDRV_PCM_TRIGGER_SUSPEND 5
113#define SNDRV_PCM_TRIGGER_RESUME 6
114#define SNDRV_PCM_TRIGGER_DRAIN 7
115
116#define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1)
117
118
119#define SNDRV_PCM_RATE_5512 (1<<0)
120#define SNDRV_PCM_RATE_8000 (1<<1)
121#define SNDRV_PCM_RATE_11025 (1<<2)
122#define SNDRV_PCM_RATE_16000 (1<<3)
123#define SNDRV_PCM_RATE_22050 (1<<4)
124#define SNDRV_PCM_RATE_32000 (1<<5)
125#define SNDRV_PCM_RATE_44100 (1<<6)
126#define SNDRV_PCM_RATE_48000 (1<<7)
127#define SNDRV_PCM_RATE_64000 (1<<8)
128#define SNDRV_PCM_RATE_88200 (1<<9)
129#define SNDRV_PCM_RATE_96000 (1<<10)
130#define SNDRV_PCM_RATE_176400 (1<<11)
131#define SNDRV_PCM_RATE_192000 (1<<12)
132
133#define SNDRV_PCM_RATE_CONTINUOUS (1<<30)
134#define SNDRV_PCM_RATE_KNOT (1<<31)
135
136#define SNDRV_PCM_RATE_8000_44100 (SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\
137 SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\
138 SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100)
139#define SNDRV_PCM_RATE_8000_48000 (SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000)
140#define SNDRV_PCM_RATE_8000_96000 (SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\
141 SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000)
142#define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\
143 SNDRV_PCM_RATE_192000)
144#define _SNDRV_PCM_FMTBIT(fmt) (1ULL << (__force int)SNDRV_PCM_FORMAT_##fmt)
145#define SNDRV_PCM_FMTBIT_S8 _SNDRV_PCM_FMTBIT(S8)
146#define SNDRV_PCM_FMTBIT_U8 _SNDRV_PCM_FMTBIT(U8)
147#define SNDRV_PCM_FMTBIT_S16_LE _SNDRV_PCM_FMTBIT(S16_LE)
148#define SNDRV_PCM_FMTBIT_S16_BE _SNDRV_PCM_FMTBIT(S16_BE)
149#define SNDRV_PCM_FMTBIT_U16_LE _SNDRV_PCM_FMTBIT(U16_LE)
150#define SNDRV_PCM_FMTBIT_U16_BE _SNDRV_PCM_FMTBIT(U16_BE)
151#define SNDRV_PCM_FMTBIT_S24_LE _SNDRV_PCM_FMTBIT(S24_LE)
152#define SNDRV_PCM_FMTBIT_S24_BE _SNDRV_PCM_FMTBIT(S24_BE)
153#define SNDRV_PCM_FMTBIT_U24_LE _SNDRV_PCM_FMTBIT(U24_LE)
154#define SNDRV_PCM_FMTBIT_U24_BE _SNDRV_PCM_FMTBIT(U24_BE)
155#define SNDRV_PCM_FMTBIT_S32_LE _SNDRV_PCM_FMTBIT(S32_LE)
156#define SNDRV_PCM_FMTBIT_S32_BE _SNDRV_PCM_FMTBIT(S32_BE)
157#define SNDRV_PCM_FMTBIT_U32_LE _SNDRV_PCM_FMTBIT(U32_LE)
158#define SNDRV_PCM_FMTBIT_U32_BE _SNDRV_PCM_FMTBIT(U32_BE)
159#define SNDRV_PCM_FMTBIT_FLOAT_LE _SNDRV_PCM_FMTBIT(FLOAT_LE)
160#define SNDRV_PCM_FMTBIT_FLOAT_BE _SNDRV_PCM_FMTBIT(FLOAT_BE)
161#define SNDRV_PCM_FMTBIT_FLOAT64_LE _SNDRV_PCM_FMTBIT(FLOAT64_LE)
162#define SNDRV_PCM_FMTBIT_FLOAT64_BE _SNDRV_PCM_FMTBIT(FLOAT64_BE)
163#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_LE)
164#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_BE)
165#define SNDRV_PCM_FMTBIT_MU_LAW _SNDRV_PCM_FMTBIT(MU_LAW)
166#define SNDRV_PCM_FMTBIT_A_LAW _SNDRV_PCM_FMTBIT(A_LAW)
167#define SNDRV_PCM_FMTBIT_IMA_ADPCM _SNDRV_PCM_FMTBIT(IMA_ADPCM)
168#define SNDRV_PCM_FMTBIT_MPEG _SNDRV_PCM_FMTBIT(MPEG)
169#define SNDRV_PCM_FMTBIT_GSM _SNDRV_PCM_FMTBIT(GSM)
170#define SNDRV_PCM_FMTBIT_SPECIAL _SNDRV_PCM_FMTBIT(SPECIAL)
171#define SNDRV_PCM_FMTBIT_S24_3LE _SNDRV_PCM_FMTBIT(S24_3LE)
172#define SNDRV_PCM_FMTBIT_U24_3LE _SNDRV_PCM_FMTBIT(U24_3LE)
173#define SNDRV_PCM_FMTBIT_S24_3BE _SNDRV_PCM_FMTBIT(S24_3BE)
174#define SNDRV_PCM_FMTBIT_U24_3BE _SNDRV_PCM_FMTBIT(U24_3BE)
175#define SNDRV_PCM_FMTBIT_S20_3LE _SNDRV_PCM_FMTBIT(S20_3LE)
176#define SNDRV_PCM_FMTBIT_U20_3LE _SNDRV_PCM_FMTBIT(U20_3LE)
177#define SNDRV_PCM_FMTBIT_S20_3BE _SNDRV_PCM_FMTBIT(S20_3BE)
178#define SNDRV_PCM_FMTBIT_U20_3BE _SNDRV_PCM_FMTBIT(U20_3BE)
179#define SNDRV_PCM_FMTBIT_S18_3LE _SNDRV_PCM_FMTBIT(S18_3LE)
180#define SNDRV_PCM_FMTBIT_U18_3LE _SNDRV_PCM_FMTBIT(U18_3LE)
181#define SNDRV_PCM_FMTBIT_S18_3BE _SNDRV_PCM_FMTBIT(S18_3BE)
182#define SNDRV_PCM_FMTBIT_U18_3BE _SNDRV_PCM_FMTBIT(U18_3BE)
183#define SNDRV_PCM_FMTBIT_G723_24 _SNDRV_PCM_FMTBIT(G723_24)
184#define SNDRV_PCM_FMTBIT_G723_24_1B _SNDRV_PCM_FMTBIT(G723_24_1B)
185#define SNDRV_PCM_FMTBIT_G723_40 _SNDRV_PCM_FMTBIT(G723_40)
186#define SNDRV_PCM_FMTBIT_G723_40_1B _SNDRV_PCM_FMTBIT(G723_40_1B)
187#define SNDRV_PCM_FMTBIT_DSD_U8 _SNDRV_PCM_FMTBIT(DSD_U8)
188#define SNDRV_PCM_FMTBIT_DSD_U16_LE _SNDRV_PCM_FMTBIT(DSD_U16_LE)
189#define SNDRV_PCM_FMTBIT_DSD_U32_LE _SNDRV_PCM_FMTBIT(DSD_U32_LE)
190#define SNDRV_PCM_FMTBIT_DSD_U16_BE _SNDRV_PCM_FMTBIT(DSD_U16_BE)
191#define SNDRV_PCM_FMTBIT_DSD_U32_BE _SNDRV_PCM_FMTBIT(DSD_U32_BE)
192
193#ifdef SNDRV_LITTLE_ENDIAN
194#define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE
195#define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE
196#define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE
197#define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE
198#define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE
199#define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE
200#define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE
201#define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE
202#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
203#endif
204#ifdef SNDRV_BIG_ENDIAN
205#define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_BE
206#define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_BE
207#define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_BE
208#define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_BE
209#define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_BE
210#define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_BE
211#define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_BE
212#define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_BE
213#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
214#endif
215
216struct snd_pcm_file {
217 struct snd_pcm_substream *substream;
218 int no_compat_mmap;
219};
220
221struct snd_pcm_hw_rule;
222typedef int (*snd_pcm_hw_rule_func_t)(struct snd_pcm_hw_params *params,
223 struct snd_pcm_hw_rule *rule);
224
225struct snd_pcm_hw_rule {
226 unsigned int cond;
227 int var;
228 int deps[4];
229
230 snd_pcm_hw_rule_func_t func;
231 void *private;
232};
233
234struct snd_pcm_hw_constraints {
235 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
236 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
237 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
238 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
239 unsigned int rules_num;
240 unsigned int rules_all;
241 struct snd_pcm_hw_rule *rules;
242};
243
244static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs,
245 snd_pcm_hw_param_t var)
246{
247 return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
248}
249
250static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs,
251 snd_pcm_hw_param_t var)
252{
253 return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
254}
255
256struct snd_ratnum {
257 unsigned int num;
258 unsigned int den_min, den_max, den_step;
259};
260
261struct snd_ratden {
262 unsigned int num_min, num_max, num_step;
263 unsigned int den;
264};
265
266struct snd_pcm_hw_constraint_ratnums {
267 int nrats;
268 const struct snd_ratnum *rats;
269};
270
271struct snd_pcm_hw_constraint_ratdens {
272 int nrats;
273 const struct snd_ratden *rats;
274};
275
276struct snd_pcm_hw_constraint_list {
277 const unsigned int *list;
278 unsigned int count;
279 unsigned int mask;
280};
281
282struct snd_pcm_hw_constraint_ranges {
283 unsigned int count;
284 const struct snd_interval *ranges;
285 unsigned int mask;
286};
287
288
289
290
291
292struct snd_pcm_audio_tstamp_config {
293
294 u32 type_requested:4;
295 u32 report_delay:1;
296};
297
298static inline void snd_pcm_unpack_audio_tstamp_config(__u32 data,
299 struct snd_pcm_audio_tstamp_config *config)
300{
301 config->type_requested = data & 0xF;
302 config->report_delay = (data >> 4) & 1;
303}
304
305
306
307
308
309struct snd_pcm_audio_tstamp_report {
310
311
312
313 u32 valid:1;
314
315
316 u32 actual_type:4;
317
318
319 u32 accuracy_report:1;
320 u32 accuracy;
321};
322
323static inline void snd_pcm_pack_audio_tstamp_report(__u32 *data, __u32 *accuracy,
324 const struct snd_pcm_audio_tstamp_report *report)
325{
326 u32 tmp;
327
328 tmp = report->accuracy_report;
329 tmp <<= 4;
330 tmp |= report->actual_type;
331 tmp <<= 1;
332 tmp |= report->valid;
333
334 *data &= 0xffff;
335 *data |= (tmp << 16);
336 *accuracy = report->accuracy;
337}
338
339
340struct snd_pcm_runtime {
341
342 struct snd_pcm_substream *trigger_master;
343 struct timespec trigger_tstamp;
344 bool trigger_tstamp_latched;
345 int overrange;
346 snd_pcm_uframes_t avail_max;
347 snd_pcm_uframes_t hw_ptr_base;
348 snd_pcm_uframes_t hw_ptr_interrupt;
349 unsigned long hw_ptr_jiffies;
350 unsigned long hw_ptr_buffer_jiffies;
351 snd_pcm_sframes_t delay;
352 u64 hw_ptr_wrap;
353
354
355 snd_pcm_access_t access;
356 snd_pcm_format_t format;
357 snd_pcm_subformat_t subformat;
358 unsigned int rate;
359 unsigned int channels;
360 snd_pcm_uframes_t period_size;
361 unsigned int periods;
362 snd_pcm_uframes_t buffer_size;
363 snd_pcm_uframes_t min_align;
364 size_t byte_align;
365 unsigned int frame_bits;
366 unsigned int sample_bits;
367 unsigned int info;
368 unsigned int rate_num;
369 unsigned int rate_den;
370 unsigned int no_period_wakeup: 1;
371
372
373 int tstamp_mode;
374 unsigned int period_step;
375 snd_pcm_uframes_t start_threshold;
376 snd_pcm_uframes_t stop_threshold;
377 snd_pcm_uframes_t silence_threshold;
378
379 snd_pcm_uframes_t silence_size;
380 snd_pcm_uframes_t boundary;
381
382 snd_pcm_uframes_t silence_start;
383 snd_pcm_uframes_t silence_filled;
384
385 union snd_pcm_sync_id sync;
386
387
388 struct snd_pcm_mmap_status *status;
389 struct snd_pcm_mmap_control *control;
390
391
392 snd_pcm_uframes_t twake;
393 wait_queue_head_t sleep;
394 wait_queue_head_t tsleep;
395 struct fasync_struct *fasync;
396
397
398 void *private_data;
399 void (*private_free)(struct snd_pcm_runtime *runtime);
400
401
402 struct snd_pcm_hardware hw;
403 struct snd_pcm_hw_constraints hw_constraints;
404
405
406 unsigned int timer_resolution;
407 int tstamp_type;
408
409
410 unsigned char *dma_area;
411 dma_addr_t dma_addr;
412 size_t dma_bytes;
413
414 struct snd_dma_buffer *dma_buffer_p;
415
416
417 struct snd_pcm_audio_tstamp_config audio_tstamp_config;
418 struct snd_pcm_audio_tstamp_report audio_tstamp_report;
419 struct timespec driver_tstamp;
420
421#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
422
423 struct snd_pcm_oss_runtime oss;
424#endif
425};
426
427struct snd_pcm_group {
428 spinlock_t lock;
429 struct mutex mutex;
430 struct list_head substreams;
431 int count;
432};
433
434struct pid;
435
436struct snd_pcm_substream {
437 struct snd_pcm *pcm;
438 struct snd_pcm_str *pstr;
439 void *private_data;
440 int number;
441 char name[32];
442 int stream;
443 struct pm_qos_request latency_pm_qos_req;
444 size_t buffer_bytes_max;
445 struct snd_dma_buffer dma_buffer;
446 size_t dma_max;
447
448 const struct snd_pcm_ops *ops;
449
450 struct snd_pcm_runtime *runtime;
451
452 struct snd_timer *timer;
453 unsigned timer_running: 1;
454
455 struct snd_pcm_substream *next;
456
457 struct list_head link_list;
458 struct snd_pcm_group self_group;
459 struct snd_pcm_group *group;
460
461 void *file;
462 int ref_count;
463 atomic_t mmap_count;
464 unsigned int f_flags;
465 void (*pcm_release)(struct snd_pcm_substream *);
466 struct pid *pid;
467#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
468
469 struct snd_pcm_oss_substream oss;
470#endif
471#ifdef CONFIG_SND_VERBOSE_PROCFS
472 struct snd_info_entry *proc_root;
473 struct snd_info_entry *proc_info_entry;
474 struct snd_info_entry *proc_hw_params_entry;
475 struct snd_info_entry *proc_sw_params_entry;
476 struct snd_info_entry *proc_status_entry;
477 struct snd_info_entry *proc_prealloc_entry;
478 struct snd_info_entry *proc_prealloc_max_entry;
479#ifdef CONFIG_SND_PCM_XRUN_DEBUG
480 struct snd_info_entry *proc_xrun_injection_entry;
481#endif
482#endif
483
484 unsigned int hw_opened: 1;
485};
486
487#define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0)
488
489
490struct snd_pcm_str {
491 int stream;
492 struct snd_pcm *pcm;
493
494 unsigned int substream_count;
495 unsigned int substream_opened;
496 struct snd_pcm_substream *substream;
497#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
498
499 struct snd_pcm_oss_stream oss;
500#endif
501#ifdef CONFIG_SND_VERBOSE_PROCFS
502 struct snd_info_entry *proc_root;
503 struct snd_info_entry *proc_info_entry;
504#ifdef CONFIG_SND_PCM_XRUN_DEBUG
505 unsigned int xrun_debug;
506 struct snd_info_entry *proc_xrun_debug_entry;
507#endif
508#endif
509 struct snd_kcontrol *chmap_kctl;
510 struct device dev;
511};
512
513struct snd_pcm {
514 struct snd_card *card;
515 struct list_head list;
516 int device;
517 unsigned int info_flags;
518 unsigned short dev_class;
519 unsigned short dev_subclass;
520 char id[64];
521 char name[80];
522 struct snd_pcm_str streams[2];
523 struct mutex open_mutex;
524 wait_queue_head_t open_wait;
525 void *private_data;
526 void (*private_free) (struct snd_pcm *pcm);
527 bool internal;
528 bool nonatomic;
529#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
530 struct snd_pcm_oss oss;
531#endif
532};
533
534struct snd_pcm_notify {
535 int (*n_register) (struct snd_pcm * pcm);
536 int (*n_disconnect) (struct snd_pcm * pcm);
537 int (*n_unregister) (struct snd_pcm * pcm);
538 struct list_head list;
539};
540
541
542
543
544
545extern const struct file_operations snd_pcm_f_ops[2];
546
547int snd_pcm_new(struct snd_card *card, const char *id, int device,
548 int playback_count, int capture_count,
549 struct snd_pcm **rpcm);
550int snd_pcm_new_internal(struct snd_card *card, const char *id, int device,
551 int playback_count, int capture_count,
552 struct snd_pcm **rpcm);
553int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count);
554
555int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree);
556
557
558
559
560
561int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info);
562int snd_pcm_info_user(struct snd_pcm_substream *substream,
563 struct snd_pcm_info __user *info);
564int snd_pcm_status(struct snd_pcm_substream *substream,
565 struct snd_pcm_status *status);
566int snd_pcm_start(struct snd_pcm_substream *substream);
567int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t status);
568int snd_pcm_drain_done(struct snd_pcm_substream *substream);
569int snd_pcm_stop_xrun(struct snd_pcm_substream *substream);
570#ifdef CONFIG_PM
571int snd_pcm_suspend(struct snd_pcm_substream *substream);
572int snd_pcm_suspend_all(struct snd_pcm *pcm);
573#else
574static inline int snd_pcm_suspend(struct snd_pcm_substream *substream)
575{
576 return 0;
577}
578static inline int snd_pcm_suspend_all(struct snd_pcm *pcm)
579{
580 return 0;
581}
582#endif
583int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg);
584int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file,
585 struct snd_pcm_substream **rsubstream);
586void snd_pcm_release_substream(struct snd_pcm_substream *substream);
587int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file,
588 struct snd_pcm_substream **rsubstream);
589void snd_pcm_detach_substream(struct snd_pcm_substream *substream);
590int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area);
591
592
593#ifdef CONFIG_SND_DEBUG
594void snd_pcm_debug_name(struct snd_pcm_substream *substream,
595 char *name, size_t len);
596#else
597static inline void
598snd_pcm_debug_name(struct snd_pcm_substream *substream, char *buf, size_t size)
599{
600 *buf = 0;
601}
602#endif
603
604
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609
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611
612
613
614static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream)
615{
616 return substream->group != &substream->self_group;
617}
618
619void snd_pcm_stream_lock(struct snd_pcm_substream *substream);
620void snd_pcm_stream_unlock(struct snd_pcm_substream *substream);
621void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream);
622void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream);
623unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream);
624
625
626
627
628
629
630
631
632
633
634#define snd_pcm_stream_lock_irqsave(substream, flags) \
635 do { \
636 typecheck(unsigned long, flags); \
637 flags = _snd_pcm_stream_lock_irqsave(substream); \
638 } while (0)
639void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream,
640 unsigned long flags);
641
642
643
644
645
646
647
648
649
650
651#define snd_pcm_group_for_each_entry(s, substream) \
652 list_for_each_entry(s, &substream->group->substreams, link_list)
653
654
655
656
657
658
659
660
661static inline int snd_pcm_running(struct snd_pcm_substream *substream)
662{
663 return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING ||
664 (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING &&
665 substream->stream == SNDRV_PCM_STREAM_PLAYBACK));
666}
667
668
669
670
671
672
673static inline ssize_t bytes_to_samples(struct snd_pcm_runtime *runtime, ssize_t size)
674{
675 return size * 8 / runtime->sample_bits;
676}
677
678
679
680
681
682
683static inline snd_pcm_sframes_t bytes_to_frames(struct snd_pcm_runtime *runtime, ssize_t size)
684{
685 return size * 8 / runtime->frame_bits;
686}
687
688
689
690
691
692
693static inline ssize_t samples_to_bytes(struct snd_pcm_runtime *runtime, ssize_t size)
694{
695 return size * runtime->sample_bits / 8;
696}
697
698
699
700
701
702
703static inline ssize_t frames_to_bytes(struct snd_pcm_runtime *runtime, snd_pcm_sframes_t size)
704{
705 return size * runtime->frame_bits / 8;
706}
707
708
709
710
711
712
713static inline int frame_aligned(struct snd_pcm_runtime *runtime, ssize_t bytes)
714{
715 return bytes % runtime->byte_align == 0;
716}
717
718
719
720
721
722static inline size_t snd_pcm_lib_buffer_bytes(struct snd_pcm_substream *substream)
723{
724 struct snd_pcm_runtime *runtime = substream->runtime;
725 return frames_to_bytes(runtime, runtime->buffer_size);
726}
727
728
729
730
731
732static inline size_t snd_pcm_lib_period_bytes(struct snd_pcm_substream *substream)
733{
734 struct snd_pcm_runtime *runtime = substream->runtime;
735 return frames_to_bytes(runtime, runtime->period_size);
736}
737
738
739
740
741
742
743
744static inline snd_pcm_uframes_t snd_pcm_playback_avail(struct snd_pcm_runtime *runtime)
745{
746 snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr;
747 if (avail < 0)
748 avail += runtime->boundary;
749 else if ((snd_pcm_uframes_t) avail >= runtime->boundary)
750 avail -= runtime->boundary;
751 return avail;
752}
753
754
755
756
757
758
759
760static inline snd_pcm_uframes_t snd_pcm_capture_avail(struct snd_pcm_runtime *runtime)
761{
762 snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr;
763 if (avail < 0)
764 avail += runtime->boundary;
765 return avail;
766}
767
768
769
770
771
772static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(struct snd_pcm_runtime *runtime)
773{
774 return runtime->buffer_size - snd_pcm_playback_avail(runtime);
775}
776
777
778
779
780
781static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime *runtime)
782{
783 return runtime->buffer_size - snd_pcm_capture_avail(runtime);
784}
785
786
787
788
789
790
791
792
793
794static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream)
795{
796 struct snd_pcm_runtime *runtime = substream->runtime;
797 return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min;
798}
799
800
801
802
803
804
805
806
807
808static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream)
809{
810 struct snd_pcm_runtime *runtime = substream->runtime;
811 return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min;
812}
813
814
815
816
817
818
819
820
821
822
823static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream)
824{
825 struct snd_pcm_runtime *runtime = substream->runtime;
826
827 if (runtime->stop_threshold >= runtime->boundary)
828 return 1;
829 return snd_pcm_playback_avail(runtime) < runtime->buffer_size;
830}
831
832
833
834
835
836
837
838
839
840static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream)
841{
842 struct snd_pcm_runtime *runtime = substream->runtime;
843 return snd_pcm_playback_avail(runtime) >= runtime->buffer_size;
844}
845
846
847
848
849
850
851
852
853
854static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream)
855{
856 struct snd_pcm_runtime *runtime = substream->runtime;
857 return snd_pcm_capture_avail(runtime) == 0;
858}
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream,
875 struct snd_pcm_substream *master)
876{
877 substream->runtime->trigger_master = master;
878}
879
880static inline int hw_is_mask(int var)
881{
882 return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK &&
883 var <= SNDRV_PCM_HW_PARAM_LAST_MASK;
884}
885
886static inline int hw_is_interval(int var)
887{
888 return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL &&
889 var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL;
890}
891
892static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params,
893 snd_pcm_hw_param_t var)
894{
895 return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
896}
897
898static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params,
899 snd_pcm_hw_param_t var)
900{
901 return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
902}
903
904static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params,
905 snd_pcm_hw_param_t var)
906{
907 return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
908}
909
910static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params,
911 snd_pcm_hw_param_t var)
912{
913 return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
914}
915
916
917
918
919
920static inline unsigned int params_channels(const struct snd_pcm_hw_params *p)
921{
922 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_CHANNELS)->min;
923}
924
925
926
927
928
929static inline unsigned int params_rate(const struct snd_pcm_hw_params *p)
930{
931 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_RATE)->min;
932}
933
934
935
936
937
938static inline unsigned int params_period_size(const struct snd_pcm_hw_params *p)
939{
940 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min;
941}
942
943
944
945
946
947static inline unsigned int params_periods(const struct snd_pcm_hw_params *p)
948{
949 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIODS)->min;
950}
951
952
953
954
955
956static inline unsigned int params_buffer_size(const struct snd_pcm_hw_params *p)
957{
958 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min;
959}
960
961
962
963
964
965static inline unsigned int params_buffer_bytes(const struct snd_pcm_hw_params *p)
966{
967 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min;
968}
969
970int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v);
971void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c);
972void snd_interval_div(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c);
973void snd_interval_muldivk(const struct snd_interval *a, const struct snd_interval *b,
974 unsigned int k, struct snd_interval *c);
975void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
976 const struct snd_interval *b, struct snd_interval *c);
977int snd_interval_list(struct snd_interval *i, unsigned int count,
978 const unsigned int *list, unsigned int mask);
979int snd_interval_ranges(struct snd_interval *i, unsigned int count,
980 const struct snd_interval *list, unsigned int mask);
981int snd_interval_ratnum(struct snd_interval *i,
982 unsigned int rats_count, const struct snd_ratnum *rats,
983 unsigned int *nump, unsigned int *denp);
984
985void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params);
986void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var);
987int snd_pcm_hw_params_choose(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params);
988
989int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params);
990
991int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream);
992int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream);
993
994int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
995 u_int32_t mask);
996int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
997 u_int64_t mask);
998int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
999 unsigned int min, unsigned int max);
1000int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var);
1001int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime,
1002 unsigned int cond,
1003 snd_pcm_hw_param_t var,
1004 const struct snd_pcm_hw_constraint_list *l);
1005int snd_pcm_hw_constraint_ranges(struct snd_pcm_runtime *runtime,
1006 unsigned int cond,
1007 snd_pcm_hw_param_t var,
1008 const struct snd_pcm_hw_constraint_ranges *r);
1009int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime,
1010 unsigned int cond,
1011 snd_pcm_hw_param_t var,
1012 const struct snd_pcm_hw_constraint_ratnums *r);
1013int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime,
1014 unsigned int cond,
1015 snd_pcm_hw_param_t var,
1016 const struct snd_pcm_hw_constraint_ratdens *r);
1017int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime,
1018 unsigned int cond,
1019 unsigned int width,
1020 unsigned int msbits);
1021int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime,
1022 unsigned int cond,
1023 snd_pcm_hw_param_t var,
1024 unsigned long step);
1025int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
1026 unsigned int cond,
1027 snd_pcm_hw_param_t var);
1028int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime,
1029 unsigned int base_rate);
1030int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime,
1031 unsigned int cond,
1032 int var,
1033 snd_pcm_hw_rule_func_t func, void *private,
1034 int dep, ...);
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045static inline int snd_pcm_hw_constraint_single(
1046 struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
1047 unsigned int val)
1048{
1049 return snd_pcm_hw_constraint_minmax(runtime, var, val, val);
1050}
1051
1052int snd_pcm_format_signed(snd_pcm_format_t format);
1053int snd_pcm_format_unsigned(snd_pcm_format_t format);
1054int snd_pcm_format_linear(snd_pcm_format_t format);
1055int snd_pcm_format_little_endian(snd_pcm_format_t format);
1056int snd_pcm_format_big_endian(snd_pcm_format_t format);
1057#if 0
1058
1059
1060
1061
1062
1063
1064
1065int snd_pcm_format_cpu_endian(snd_pcm_format_t format);
1066#endif
1067#ifdef SNDRV_LITTLE_ENDIAN
1068#define snd_pcm_format_cpu_endian(format) snd_pcm_format_little_endian(format)
1069#else
1070#define snd_pcm_format_cpu_endian(format) snd_pcm_format_big_endian(format)
1071#endif
1072int snd_pcm_format_width(snd_pcm_format_t format);
1073int snd_pcm_format_physical_width(snd_pcm_format_t format);
1074ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
1075const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format);
1076int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames);
1077
1078void snd_pcm_set_ops(struct snd_pcm * pcm, int direction,
1079 const struct snd_pcm_ops *ops);
1080void snd_pcm_set_sync(struct snd_pcm_substream *substream);
1081int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,
1082 unsigned int cmd, void *arg);
1083int snd_pcm_update_state(struct snd_pcm_substream *substream,
1084 struct snd_pcm_runtime *runtime);
1085int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream);
1086void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr);
1087void snd_pcm_period_elapsed(struct snd_pcm_substream *substream);
1088snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream,
1089 const void __user *buf,
1090 snd_pcm_uframes_t frames);
1091snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream,
1092 void __user *buf, snd_pcm_uframes_t frames);
1093snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream,
1094 void __user **bufs, snd_pcm_uframes_t frames);
1095snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream,
1096 void __user **bufs, snd_pcm_uframes_t frames);
1097
1098extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates;
1099
1100int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime);
1101unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate);
1102unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit);
1103unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a,
1104 unsigned int rates_b);
1105unsigned int snd_pcm_rate_range_to_bits(unsigned int rate_min,
1106 unsigned int rate_max);
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116static inline void snd_pcm_set_runtime_buffer(struct snd_pcm_substream *substream,
1117 struct snd_dma_buffer *bufp)
1118{
1119 struct snd_pcm_runtime *runtime = substream->runtime;
1120 if (bufp) {
1121 runtime->dma_buffer_p = bufp;
1122 runtime->dma_area = bufp->area;
1123 runtime->dma_addr = bufp->addr;
1124 runtime->dma_bytes = bufp->bytes;
1125 } else {
1126 runtime->dma_buffer_p = NULL;
1127 runtime->dma_area = NULL;
1128 runtime->dma_addr = 0;
1129 runtime->dma_bytes = 0;
1130 }
1131}
1132
1133
1134
1135
1136
1137#ifdef CONFIG_SND_PCM_TIMER
1138void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream);
1139void snd_pcm_timer_init(struct snd_pcm_substream *substream);
1140void snd_pcm_timer_done(struct snd_pcm_substream *substream);
1141#else
1142static inline void
1143snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {}
1144static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {}
1145static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {}
1146#endif
1147
1148
1149
1150
1151
1152static inline void snd_pcm_gettime(struct snd_pcm_runtime *runtime,
1153 struct timespec *tv)
1154{
1155 switch (runtime->tstamp_type) {
1156 case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC:
1157 ktime_get_ts(tv);
1158 break;
1159 case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW:
1160 getrawmonotonic(tv);
1161 break;
1162 default:
1163 getnstimeofday(tv);
1164 break;
1165 }
1166}
1167
1168
1169
1170
1171
1172int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream);
1173int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm);
1174int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream,
1175 int type, struct device *data,
1176 size_t size, size_t max);
1177int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
1178 int type, void *data,
1179 size_t size, size_t max);
1180int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size);
1181int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream);
1182
1183int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream,
1184 size_t size, gfp_t gfp_flags);
1185int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream);
1186struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
1187 unsigned long offset);
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200static inline int snd_pcm_lib_alloc_vmalloc_buffer
1201 (struct snd_pcm_substream *substream, size_t size)
1202{
1203 return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size,
1204 GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO);
1205}
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218static inline int snd_pcm_lib_alloc_vmalloc_32_buffer
1219 (struct snd_pcm_substream *substream, size_t size)
1220{
1221 return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size,
1222 GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
1223}
1224
1225#define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p)
1226
1227#ifdef CONFIG_SND_DMA_SGBUF
1228
1229
1230
1231#define snd_pcm_substream_sgbuf(substream) \
1232 snd_pcm_get_dma_buf(substream)->private_data
1233
1234struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream,
1235 unsigned long offset);
1236#else
1237
1238
1239
1240#define snd_pcm_sgbuf_ops_page NULL
1241#endif
1242
1243
1244
1245
1246
1247
1248static inline dma_addr_t
1249snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
1250{
1251 return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs);
1252}
1253
1254
1255
1256
1257
1258
1259static inline void *
1260snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
1261{
1262 return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs);
1263}
1264
1265
1266
1267
1268
1269
1270
1271
1272static inline unsigned int
1273snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
1274 unsigned int ofs, unsigned int size)
1275{
1276 return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size);
1277}
1278
1279
1280
1281
1282
1283
1284
1285static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)
1286{
1287 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
1288 atomic_inc(&substream->mmap_count);
1289}
1290
1291
1292
1293
1294
1295
1296
1297static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area)
1298{
1299 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
1300 atomic_dec(&substream->mmap_count);
1301}
1302
1303int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
1304 struct vm_area_struct *area);
1305
1306#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA)
1307#define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP
1308int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_struct *area);
1309#else
1310#define SNDRV_PCM_INFO_MMAP_IOMEM 0
1311#define snd_pcm_lib_mmap_iomem NULL
1312#endif
1313
1314#define snd_pcm_lib_mmap_vmalloc NULL
1315
1316
1317
1318
1319
1320
1321static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
1322{
1323 *max = dma < 4 ? 64 * 1024 : 128 * 1024;
1324}
1325
1326
1327
1328
1329
1330#define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\
1331 (IEC958_AES1_CON_ORIGINAL<<8)|\
1332 (IEC958_AES1_CON_PCM_CODER<<8)|\
1333 (IEC958_AES3_CON_FS_48000<<24))
1334
1335#define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime)
1336
1337const char *snd_pcm_format_name(snd_pcm_format_t format);
1338
1339
1340
1341
1342
1343
1344
1345static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream)
1346{
1347 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1348 return "Playback";
1349 else
1350 return "Capture";
1351}
1352
1353
1354
1355
1356
1357struct snd_pcm_chmap_elem {
1358 unsigned char channels;
1359 unsigned char map[15];
1360};
1361
1362
1363struct snd_pcm_chmap {
1364 struct snd_pcm *pcm;
1365 int stream;
1366 struct snd_kcontrol *kctl;
1367 const struct snd_pcm_chmap_elem *chmap;
1368 unsigned int max_channels;
1369 unsigned int channel_mask;
1370 void *private_data;
1371};
1372
1373
1374
1375
1376
1377
1378static inline struct snd_pcm_substream *
1379snd_pcm_chmap_substream(struct snd_pcm_chmap *info, unsigned int idx)
1380{
1381 struct snd_pcm_substream *s;
1382 for (s = info->pcm->streams[info->stream].substream; s; s = s->next)
1383 if (s->number == idx)
1384 return s;
1385 return NULL;
1386}
1387
1388
1389extern const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[];
1390
1391extern const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[];
1392
1393
1394#define SND_PCM_CHMAP_MASK_24 ((1U << 2) | (1U << 4))
1395#define SND_PCM_CHMAP_MASK_246 (SND_PCM_CHMAP_MASK_24 | (1U << 6))
1396#define SND_PCM_CHMAP_MASK_2468 (SND_PCM_CHMAP_MASK_246 | (1U << 8))
1397
1398int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream,
1399 const struct snd_pcm_chmap_elem *chmap,
1400 int max_channels,
1401 unsigned long private_value,
1402 struct snd_pcm_chmap **info_ret);
1403
1404
1405
1406
1407
1408static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format)
1409{
1410 return 1ULL << (__force int) pcm_format;
1411}
1412
1413
1414#define pcm_err(pcm, fmt, args...) \
1415 dev_err((pcm)->card->dev, fmt, ##args)
1416#define pcm_warn(pcm, fmt, args...) \
1417 dev_warn((pcm)->card->dev, fmt, ##args)
1418#define pcm_dbg(pcm, fmt, args...) \
1419 dev_dbg((pcm)->card->dev, fmt, ##args)
1420
1421#endif
1422