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 IS_ENABLED(CONFIG_SND_PCM_OSS)
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 (*fill_silence)(struct snd_pcm_substream *substream, int channel,
82 unsigned long pos, unsigned long bytes);
83 int (*copy_user)(struct snd_pcm_substream *substream, int channel,
84 unsigned long pos, void __user *buf,
85 unsigned long bytes);
86 int (*copy_kernel)(struct snd_pcm_substream *substream, int channel,
87 unsigned long pos, void *buf, unsigned long bytes);
88 struct page *(*page)(struct snd_pcm_substream *substream,
89 unsigned long offset);
90 int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma);
91 int (*ack)(struct snd_pcm_substream *substream);
92};
93
94
95
96
97
98#if defined(CONFIG_SND_DYNAMIC_MINORS)
99#define SNDRV_PCM_DEVICES (SNDRV_OS_MINORS-2)
100#else
101#define SNDRV_PCM_DEVICES 8
102#endif
103
104#define SNDRV_PCM_IOCTL1_RESET 0
105
106#define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2
107
108#define SNDRV_PCM_IOCTL1_FIFO_SIZE 4
109
110#define SNDRV_PCM_TRIGGER_STOP 0
111#define SNDRV_PCM_TRIGGER_START 1
112#define SNDRV_PCM_TRIGGER_PAUSE_PUSH 3
113#define SNDRV_PCM_TRIGGER_PAUSE_RELEASE 4
114#define SNDRV_PCM_TRIGGER_SUSPEND 5
115#define SNDRV_PCM_TRIGGER_RESUME 6
116#define SNDRV_PCM_TRIGGER_DRAIN 7
117
118#define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1)
119
120
121#define SNDRV_PCM_RATE_5512 (1<<0)
122#define SNDRV_PCM_RATE_8000 (1<<1)
123#define SNDRV_PCM_RATE_11025 (1<<2)
124#define SNDRV_PCM_RATE_16000 (1<<3)
125#define SNDRV_PCM_RATE_22050 (1<<4)
126#define SNDRV_PCM_RATE_32000 (1<<5)
127#define SNDRV_PCM_RATE_44100 (1<<6)
128#define SNDRV_PCM_RATE_48000 (1<<7)
129#define SNDRV_PCM_RATE_64000 (1<<8)
130#define SNDRV_PCM_RATE_88200 (1<<9)
131#define SNDRV_PCM_RATE_96000 (1<<10)
132#define SNDRV_PCM_RATE_176400 (1<<11)
133#define SNDRV_PCM_RATE_192000 (1<<12)
134
135#define SNDRV_PCM_RATE_CONTINUOUS (1<<30)
136#define SNDRV_PCM_RATE_KNOT (1<<31)
137
138#define SNDRV_PCM_RATE_8000_44100 (SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\
139 SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\
140 SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100)
141#define SNDRV_PCM_RATE_8000_48000 (SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000)
142#define SNDRV_PCM_RATE_8000_96000 (SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\
143 SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000)
144#define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\
145 SNDRV_PCM_RATE_192000)
146#define _SNDRV_PCM_FMTBIT(fmt) (1ULL << (__force int)SNDRV_PCM_FORMAT_##fmt)
147#define SNDRV_PCM_FMTBIT_S8 _SNDRV_PCM_FMTBIT(S8)
148#define SNDRV_PCM_FMTBIT_U8 _SNDRV_PCM_FMTBIT(U8)
149#define SNDRV_PCM_FMTBIT_S16_LE _SNDRV_PCM_FMTBIT(S16_LE)
150#define SNDRV_PCM_FMTBIT_S16_BE _SNDRV_PCM_FMTBIT(S16_BE)
151#define SNDRV_PCM_FMTBIT_U16_LE _SNDRV_PCM_FMTBIT(U16_LE)
152#define SNDRV_PCM_FMTBIT_U16_BE _SNDRV_PCM_FMTBIT(U16_BE)
153#define SNDRV_PCM_FMTBIT_S24_LE _SNDRV_PCM_FMTBIT(S24_LE)
154#define SNDRV_PCM_FMTBIT_S24_BE _SNDRV_PCM_FMTBIT(S24_BE)
155#define SNDRV_PCM_FMTBIT_U24_LE _SNDRV_PCM_FMTBIT(U24_LE)
156#define SNDRV_PCM_FMTBIT_U24_BE _SNDRV_PCM_FMTBIT(U24_BE)
157#define SNDRV_PCM_FMTBIT_S32_LE _SNDRV_PCM_FMTBIT(S32_LE)
158#define SNDRV_PCM_FMTBIT_S32_BE _SNDRV_PCM_FMTBIT(S32_BE)
159#define SNDRV_PCM_FMTBIT_U32_LE _SNDRV_PCM_FMTBIT(U32_LE)
160#define SNDRV_PCM_FMTBIT_U32_BE _SNDRV_PCM_FMTBIT(U32_BE)
161#define SNDRV_PCM_FMTBIT_FLOAT_LE _SNDRV_PCM_FMTBIT(FLOAT_LE)
162#define SNDRV_PCM_FMTBIT_FLOAT_BE _SNDRV_PCM_FMTBIT(FLOAT_BE)
163#define SNDRV_PCM_FMTBIT_FLOAT64_LE _SNDRV_PCM_FMTBIT(FLOAT64_LE)
164#define SNDRV_PCM_FMTBIT_FLOAT64_BE _SNDRV_PCM_FMTBIT(FLOAT64_BE)
165#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_LE)
166#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_BE)
167#define SNDRV_PCM_FMTBIT_MU_LAW _SNDRV_PCM_FMTBIT(MU_LAW)
168#define SNDRV_PCM_FMTBIT_A_LAW _SNDRV_PCM_FMTBIT(A_LAW)
169#define SNDRV_PCM_FMTBIT_IMA_ADPCM _SNDRV_PCM_FMTBIT(IMA_ADPCM)
170#define SNDRV_PCM_FMTBIT_MPEG _SNDRV_PCM_FMTBIT(MPEG)
171#define SNDRV_PCM_FMTBIT_GSM _SNDRV_PCM_FMTBIT(GSM)
172#define SNDRV_PCM_FMTBIT_SPECIAL _SNDRV_PCM_FMTBIT(SPECIAL)
173#define SNDRV_PCM_FMTBIT_S24_3LE _SNDRV_PCM_FMTBIT(S24_3LE)
174#define SNDRV_PCM_FMTBIT_U24_3LE _SNDRV_PCM_FMTBIT(U24_3LE)
175#define SNDRV_PCM_FMTBIT_S24_3BE _SNDRV_PCM_FMTBIT(S24_3BE)
176#define SNDRV_PCM_FMTBIT_U24_3BE _SNDRV_PCM_FMTBIT(U24_3BE)
177#define SNDRV_PCM_FMTBIT_S20_3LE _SNDRV_PCM_FMTBIT(S20_3LE)
178#define SNDRV_PCM_FMTBIT_U20_3LE _SNDRV_PCM_FMTBIT(U20_3LE)
179#define SNDRV_PCM_FMTBIT_S20_3BE _SNDRV_PCM_FMTBIT(S20_3BE)
180#define SNDRV_PCM_FMTBIT_U20_3BE _SNDRV_PCM_FMTBIT(U20_3BE)
181#define SNDRV_PCM_FMTBIT_S18_3LE _SNDRV_PCM_FMTBIT(S18_3LE)
182#define SNDRV_PCM_FMTBIT_U18_3LE _SNDRV_PCM_FMTBIT(U18_3LE)
183#define SNDRV_PCM_FMTBIT_S18_3BE _SNDRV_PCM_FMTBIT(S18_3BE)
184#define SNDRV_PCM_FMTBIT_U18_3BE _SNDRV_PCM_FMTBIT(U18_3BE)
185#define SNDRV_PCM_FMTBIT_G723_24 _SNDRV_PCM_FMTBIT(G723_24)
186#define SNDRV_PCM_FMTBIT_G723_24_1B _SNDRV_PCM_FMTBIT(G723_24_1B)
187#define SNDRV_PCM_FMTBIT_G723_40 _SNDRV_PCM_FMTBIT(G723_40)
188#define SNDRV_PCM_FMTBIT_G723_40_1B _SNDRV_PCM_FMTBIT(G723_40_1B)
189#define SNDRV_PCM_FMTBIT_DSD_U8 _SNDRV_PCM_FMTBIT(DSD_U8)
190#define SNDRV_PCM_FMTBIT_DSD_U16_LE _SNDRV_PCM_FMTBIT(DSD_U16_LE)
191#define SNDRV_PCM_FMTBIT_DSD_U32_LE _SNDRV_PCM_FMTBIT(DSD_U32_LE)
192#define SNDRV_PCM_FMTBIT_DSD_U16_BE _SNDRV_PCM_FMTBIT(DSD_U16_BE)
193#define SNDRV_PCM_FMTBIT_DSD_U32_BE _SNDRV_PCM_FMTBIT(DSD_U32_BE)
194
195#ifdef SNDRV_LITTLE_ENDIAN
196#define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE
197#define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE
198#define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE
199#define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE
200#define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE
201#define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE
202#define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE
203#define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE
204#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
205#endif
206#ifdef SNDRV_BIG_ENDIAN
207#define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_BE
208#define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_BE
209#define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_BE
210#define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_BE
211#define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_BE
212#define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_BE
213#define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_BE
214#define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_BE
215#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE
216#endif
217
218struct snd_pcm_file {
219 struct snd_pcm_substream *substream;
220 int no_compat_mmap;
221 unsigned int user_pversion;
222};
223
224struct snd_pcm_hw_rule;
225typedef int (*snd_pcm_hw_rule_func_t)(struct snd_pcm_hw_params *params,
226 struct snd_pcm_hw_rule *rule);
227
228struct snd_pcm_hw_rule {
229 unsigned int cond;
230 int var;
231 int deps[4];
232
233 snd_pcm_hw_rule_func_t func;
234 void *private;
235};
236
237struct snd_pcm_hw_constraints {
238 struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
239 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
240 struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
241 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
242 unsigned int rules_num;
243 unsigned int rules_all;
244 struct snd_pcm_hw_rule *rules;
245};
246
247static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs,
248 snd_pcm_hw_param_t var)
249{
250 return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
251}
252
253static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs,
254 snd_pcm_hw_param_t var)
255{
256 return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
257}
258
259struct snd_ratnum {
260 unsigned int num;
261 unsigned int den_min, den_max, den_step;
262};
263
264struct snd_ratden {
265 unsigned int num_min, num_max, num_step;
266 unsigned int den;
267};
268
269struct snd_pcm_hw_constraint_ratnums {
270 int nrats;
271 const struct snd_ratnum *rats;
272};
273
274struct snd_pcm_hw_constraint_ratdens {
275 int nrats;
276 const struct snd_ratden *rats;
277};
278
279struct snd_pcm_hw_constraint_list {
280 const unsigned int *list;
281 unsigned int count;
282 unsigned int mask;
283};
284
285struct snd_pcm_hw_constraint_ranges {
286 unsigned int count;
287 const struct snd_interval *ranges;
288 unsigned int mask;
289};
290
291
292
293
294
295struct snd_pcm_audio_tstamp_config {
296
297 u32 type_requested:4;
298 u32 report_delay:1;
299};
300
301static inline void snd_pcm_unpack_audio_tstamp_config(__u32 data,
302 struct snd_pcm_audio_tstamp_config *config)
303{
304 config->type_requested = data & 0xF;
305 config->report_delay = (data >> 4) & 1;
306}
307
308
309
310
311
312struct snd_pcm_audio_tstamp_report {
313
314
315
316 u32 valid:1;
317
318
319 u32 actual_type:4;
320
321
322 u32 accuracy_report:1;
323 u32 accuracy;
324};
325
326static inline void snd_pcm_pack_audio_tstamp_report(__u32 *data, __u32 *accuracy,
327 const struct snd_pcm_audio_tstamp_report *report)
328{
329 u32 tmp;
330
331 tmp = report->accuracy_report;
332 tmp <<= 4;
333 tmp |= report->actual_type;
334 tmp <<= 1;
335 tmp |= report->valid;
336
337 *data &= 0xffff;
338 *data |= (tmp << 16);
339 *accuracy = report->accuracy;
340}
341
342
343struct snd_pcm_runtime {
344
345 struct snd_pcm_substream *trigger_master;
346 struct timespec trigger_tstamp;
347 bool trigger_tstamp_latched;
348 int overrange;
349 snd_pcm_uframes_t avail_max;
350 snd_pcm_uframes_t hw_ptr_base;
351 snd_pcm_uframes_t hw_ptr_interrupt;
352 unsigned long hw_ptr_jiffies;
353 unsigned long hw_ptr_buffer_jiffies;
354 snd_pcm_sframes_t delay;
355 u64 hw_ptr_wrap;
356
357
358 snd_pcm_access_t access;
359 snd_pcm_format_t format;
360 snd_pcm_subformat_t subformat;
361 unsigned int rate;
362 unsigned int channels;
363 snd_pcm_uframes_t period_size;
364 unsigned int periods;
365 snd_pcm_uframes_t buffer_size;
366 snd_pcm_uframes_t min_align;
367 size_t byte_align;
368 unsigned int frame_bits;
369 unsigned int sample_bits;
370 unsigned int info;
371 unsigned int rate_num;
372 unsigned int rate_den;
373 unsigned int no_period_wakeup: 1;
374
375
376 int tstamp_mode;
377 unsigned int period_step;
378 snd_pcm_uframes_t start_threshold;
379 snd_pcm_uframes_t stop_threshold;
380 snd_pcm_uframes_t silence_threshold;
381
382 snd_pcm_uframes_t silence_size;
383 snd_pcm_uframes_t boundary;
384
385 snd_pcm_uframes_t silence_start;
386 snd_pcm_uframes_t silence_filled;
387
388 union snd_pcm_sync_id sync;
389
390
391 struct snd_pcm_mmap_status *status;
392 struct snd_pcm_mmap_control *control;
393
394
395 snd_pcm_uframes_t twake;
396 wait_queue_head_t sleep;
397 wait_queue_head_t tsleep;
398 struct fasync_struct *fasync;
399
400
401 void *private_data;
402 void (*private_free)(struct snd_pcm_runtime *runtime);
403
404
405 struct snd_pcm_hardware hw;
406 struct snd_pcm_hw_constraints hw_constraints;
407
408
409 unsigned int timer_resolution;
410 int tstamp_type;
411
412
413 unsigned char *dma_area;
414 dma_addr_t dma_addr;
415 size_t dma_bytes;
416
417 struct snd_dma_buffer *dma_buffer_p;
418
419
420 struct snd_pcm_audio_tstamp_config audio_tstamp_config;
421 struct snd_pcm_audio_tstamp_report audio_tstamp_report;
422 struct timespec driver_tstamp;
423
424#if IS_ENABLED(CONFIG_SND_PCM_OSS)
425
426 struct snd_pcm_oss_runtime oss;
427#endif
428};
429
430struct snd_pcm_group {
431 spinlock_t lock;
432 struct mutex mutex;
433 struct list_head substreams;
434 int count;
435};
436
437struct pid;
438
439struct snd_pcm_substream {
440 struct snd_pcm *pcm;
441 struct snd_pcm_str *pstr;
442 void *private_data;
443 int number;
444 char name[32];
445 int stream;
446 struct pm_qos_request latency_pm_qos_req;
447 size_t buffer_bytes_max;
448 struct snd_dma_buffer dma_buffer;
449 size_t dma_max;
450
451 const struct snd_pcm_ops *ops;
452
453 struct snd_pcm_runtime *runtime;
454
455 struct snd_timer *timer;
456 unsigned timer_running: 1;
457
458 struct snd_pcm_substream *next;
459
460 struct list_head link_list;
461 struct snd_pcm_group self_group;
462 struct snd_pcm_group *group;
463
464 void *file;
465 int ref_count;
466 atomic_t mmap_count;
467 unsigned int f_flags;
468 void (*pcm_release)(struct snd_pcm_substream *);
469 struct pid *pid;
470#if IS_ENABLED(CONFIG_SND_PCM_OSS)
471
472 struct snd_pcm_oss_substream oss;
473#endif
474#ifdef CONFIG_SND_VERBOSE_PROCFS
475 struct snd_info_entry *proc_root;
476 struct snd_info_entry *proc_info_entry;
477 struct snd_info_entry *proc_hw_params_entry;
478 struct snd_info_entry *proc_sw_params_entry;
479 struct snd_info_entry *proc_status_entry;
480 struct snd_info_entry *proc_prealloc_entry;
481 struct snd_info_entry *proc_prealloc_max_entry;
482#ifdef CONFIG_SND_PCM_XRUN_DEBUG
483 struct snd_info_entry *proc_xrun_injection_entry;
484#endif
485#endif
486
487 unsigned int hw_opened: 1;
488};
489
490#define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0)
491
492
493struct snd_pcm_str {
494 int stream;
495 struct snd_pcm *pcm;
496
497 unsigned int substream_count;
498 unsigned int substream_opened;
499 struct snd_pcm_substream *substream;
500#if IS_ENABLED(CONFIG_SND_PCM_OSS)
501
502 struct snd_pcm_oss_stream oss;
503#endif
504#ifdef CONFIG_SND_VERBOSE_PROCFS
505 struct snd_info_entry *proc_root;
506 struct snd_info_entry *proc_info_entry;
507#ifdef CONFIG_SND_PCM_XRUN_DEBUG
508 unsigned int xrun_debug;
509 struct snd_info_entry *proc_xrun_debug_entry;
510#endif
511#endif
512 struct snd_kcontrol *chmap_kctl;
513 struct device dev;
514};
515
516struct snd_pcm {
517 struct snd_card *card;
518 struct list_head list;
519 int device;
520 unsigned int info_flags;
521 unsigned short dev_class;
522 unsigned short dev_subclass;
523 char id[64];
524 char name[80];
525 struct snd_pcm_str streams[2];
526 struct mutex open_mutex;
527 wait_queue_head_t open_wait;
528 void *private_data;
529 void (*private_free) (struct snd_pcm *pcm);
530 bool internal;
531 bool nonatomic;
532#if IS_ENABLED(CONFIG_SND_PCM_OSS)
533 struct snd_pcm_oss oss;
534#endif
535};
536
537
538
539
540
541extern const struct file_operations snd_pcm_f_ops[2];
542
543int snd_pcm_new(struct snd_card *card, const char *id, int device,
544 int playback_count, int capture_count,
545 struct snd_pcm **rpcm);
546int snd_pcm_new_internal(struct snd_card *card, const char *id, int device,
547 int playback_count, int capture_count,
548 struct snd_pcm **rpcm);
549int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count);
550
551#if IS_ENABLED(CONFIG_SND_PCM_OSS)
552struct snd_pcm_notify {
553 int (*n_register) (struct snd_pcm * pcm);
554 int (*n_disconnect) (struct snd_pcm * pcm);
555 int (*n_unregister) (struct snd_pcm * pcm);
556 struct list_head list;
557};
558int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree);
559#endif
560
561
562
563
564
565int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info);
566int snd_pcm_info_user(struct snd_pcm_substream *substream,
567 struct snd_pcm_info __user *info);
568int snd_pcm_status(struct snd_pcm_substream *substream,
569 struct snd_pcm_status *status);
570int snd_pcm_start(struct snd_pcm_substream *substream);
571int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t status);
572int snd_pcm_drain_done(struct snd_pcm_substream *substream);
573int snd_pcm_stop_xrun(struct snd_pcm_substream *substream);
574#ifdef CONFIG_PM
575int snd_pcm_suspend(struct snd_pcm_substream *substream);
576int snd_pcm_suspend_all(struct snd_pcm *pcm);
577#else
578static inline int snd_pcm_suspend(struct snd_pcm_substream *substream)
579{
580 return 0;
581}
582static inline int snd_pcm_suspend_all(struct snd_pcm *pcm)
583{
584 return 0;
585}
586#endif
587int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg);
588int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file,
589 struct snd_pcm_substream **rsubstream);
590void snd_pcm_release_substream(struct snd_pcm_substream *substream);
591int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file,
592 struct snd_pcm_substream **rsubstream);
593void snd_pcm_detach_substream(struct snd_pcm_substream *substream);
594int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area);
595
596
597#ifdef CONFIG_SND_DEBUG
598void snd_pcm_debug_name(struct snd_pcm_substream *substream,
599 char *name, size_t len);
600#else
601static inline void
602snd_pcm_debug_name(struct snd_pcm_substream *substream, char *buf, size_t size)
603{
604 *buf = 0;
605}
606#endif
607
608
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615
616
617
618static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream)
619{
620 return substream->group != &substream->self_group;
621}
622
623void snd_pcm_stream_lock(struct snd_pcm_substream *substream);
624void snd_pcm_stream_unlock(struct snd_pcm_substream *substream);
625void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream);
626void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream);
627unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream);
628
629
630
631
632
633
634
635
636
637
638#define snd_pcm_stream_lock_irqsave(substream, flags) \
639 do { \
640 typecheck(unsigned long, flags); \
641 flags = _snd_pcm_stream_lock_irqsave(substream); \
642 } while (0)
643void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream,
644 unsigned long flags);
645
646
647
648
649
650
651
652
653
654
655#define snd_pcm_group_for_each_entry(s, substream) \
656 list_for_each_entry(s, &substream->group->substreams, link_list)
657
658
659
660
661
662
663
664
665static inline int snd_pcm_running(struct snd_pcm_substream *substream)
666{
667 return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING ||
668 (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING &&
669 substream->stream == SNDRV_PCM_STREAM_PLAYBACK));
670}
671
672
673
674
675
676
677static inline ssize_t bytes_to_samples(struct snd_pcm_runtime *runtime, ssize_t size)
678{
679 return size * 8 / runtime->sample_bits;
680}
681
682
683
684
685
686
687static inline snd_pcm_sframes_t bytes_to_frames(struct snd_pcm_runtime *runtime, ssize_t size)
688{
689 return size * 8 / runtime->frame_bits;
690}
691
692
693
694
695
696
697static inline ssize_t samples_to_bytes(struct snd_pcm_runtime *runtime, ssize_t size)
698{
699 return size * runtime->sample_bits / 8;
700}
701
702
703
704
705
706
707static inline ssize_t frames_to_bytes(struct snd_pcm_runtime *runtime, snd_pcm_sframes_t size)
708{
709 return size * runtime->frame_bits / 8;
710}
711
712
713
714
715
716
717static inline int frame_aligned(struct snd_pcm_runtime *runtime, ssize_t bytes)
718{
719 return bytes % runtime->byte_align == 0;
720}
721
722
723
724
725
726static inline size_t snd_pcm_lib_buffer_bytes(struct snd_pcm_substream *substream)
727{
728 struct snd_pcm_runtime *runtime = substream->runtime;
729 return frames_to_bytes(runtime, runtime->buffer_size);
730}
731
732
733
734
735
736static inline size_t snd_pcm_lib_period_bytes(struct snd_pcm_substream *substream)
737{
738 struct snd_pcm_runtime *runtime = substream->runtime;
739 return frames_to_bytes(runtime, runtime->period_size);
740}
741
742
743
744
745
746
747
748static inline snd_pcm_uframes_t snd_pcm_playback_avail(struct snd_pcm_runtime *runtime)
749{
750 snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr;
751 if (avail < 0)
752 avail += runtime->boundary;
753 else if ((snd_pcm_uframes_t) avail >= runtime->boundary)
754 avail -= runtime->boundary;
755 return avail;
756}
757
758
759
760
761
762
763
764static inline snd_pcm_uframes_t snd_pcm_capture_avail(struct snd_pcm_runtime *runtime)
765{
766 snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr;
767 if (avail < 0)
768 avail += runtime->boundary;
769 return avail;
770}
771
772
773
774
775
776static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(struct snd_pcm_runtime *runtime)
777{
778 return runtime->buffer_size - snd_pcm_playback_avail(runtime);
779}
780
781
782
783
784
785static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime *runtime)
786{
787 return runtime->buffer_size - snd_pcm_capture_avail(runtime);
788}
789
790
791
792
793
794
795
796
797
798static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream)
799{
800 struct snd_pcm_runtime *runtime = substream->runtime;
801 return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min;
802}
803
804
805
806
807
808
809
810
811
812static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream)
813{
814 struct snd_pcm_runtime *runtime = substream->runtime;
815 return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min;
816}
817
818
819
820
821
822
823
824
825
826
827static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream)
828{
829 struct snd_pcm_runtime *runtime = substream->runtime;
830
831 if (runtime->stop_threshold >= runtime->boundary)
832 return 1;
833 return snd_pcm_playback_avail(runtime) < runtime->buffer_size;
834}
835
836
837
838
839
840
841
842
843
844static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream)
845{
846 struct snd_pcm_runtime *runtime = substream->runtime;
847 return snd_pcm_playback_avail(runtime) >= runtime->buffer_size;
848}
849
850
851
852
853
854
855
856
857
858static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream)
859{
860 struct snd_pcm_runtime *runtime = substream->runtime;
861 return snd_pcm_capture_avail(runtime) == 0;
862}
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream,
879 struct snd_pcm_substream *master)
880{
881 substream->runtime->trigger_master = master;
882}
883
884static inline int hw_is_mask(int var)
885{
886 return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK &&
887 var <= SNDRV_PCM_HW_PARAM_LAST_MASK;
888}
889
890static inline int hw_is_interval(int var)
891{
892 return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL &&
893 var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL;
894}
895
896static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params,
897 snd_pcm_hw_param_t var)
898{
899 return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
900}
901
902static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params,
903 snd_pcm_hw_param_t var)
904{
905 return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
906}
907
908static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params,
909 snd_pcm_hw_param_t var)
910{
911 return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
912}
913
914static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params,
915 snd_pcm_hw_param_t var)
916{
917 return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
918}
919
920
921
922
923
924static inline unsigned int params_channels(const struct snd_pcm_hw_params *p)
925{
926 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_CHANNELS)->min;
927}
928
929
930
931
932
933static inline unsigned int params_rate(const struct snd_pcm_hw_params *p)
934{
935 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_RATE)->min;
936}
937
938
939
940
941
942static inline unsigned int params_period_size(const struct snd_pcm_hw_params *p)
943{
944 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min;
945}
946
947
948
949
950
951static inline unsigned int params_periods(const struct snd_pcm_hw_params *p)
952{
953 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIODS)->min;
954}
955
956
957
958
959
960static inline unsigned int params_buffer_size(const struct snd_pcm_hw_params *p)
961{
962 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min;
963}
964
965
966
967
968
969static inline unsigned int params_buffer_bytes(const struct snd_pcm_hw_params *p)
970{
971 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min;
972}
973
974int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v);
975int snd_interval_list(struct snd_interval *i, unsigned int count,
976 const unsigned int *list, unsigned int mask);
977int snd_interval_ranges(struct snd_interval *i, unsigned int count,
978 const struct snd_interval *list, unsigned int mask);
979int snd_interval_ratnum(struct snd_interval *i,
980 unsigned int rats_count, const struct snd_ratnum *rats,
981 unsigned int *nump, unsigned int *denp);
982
983void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params);
984void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var);
985
986int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params);
987
988int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
989 u_int64_t mask);
990int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
991 unsigned int min, unsigned int max);
992int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var);
993int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime,
994 unsigned int cond,
995 snd_pcm_hw_param_t var,
996 const struct snd_pcm_hw_constraint_list *l);
997int snd_pcm_hw_constraint_ranges(struct snd_pcm_runtime *runtime,
998 unsigned int cond,
999 snd_pcm_hw_param_t var,
1000 const struct snd_pcm_hw_constraint_ranges *r);
1001int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime,
1002 unsigned int cond,
1003 snd_pcm_hw_param_t var,
1004 const struct snd_pcm_hw_constraint_ratnums *r);
1005int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime,
1006 unsigned int cond,
1007 snd_pcm_hw_param_t var,
1008 const struct snd_pcm_hw_constraint_ratdens *r);
1009int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime,
1010 unsigned int cond,
1011 unsigned int width,
1012 unsigned int msbits);
1013int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime,
1014 unsigned int cond,
1015 snd_pcm_hw_param_t var,
1016 unsigned long step);
1017int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
1018 unsigned int cond,
1019 snd_pcm_hw_param_t var);
1020int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime,
1021 unsigned int base_rate);
1022int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime,
1023 unsigned int cond,
1024 int var,
1025 snd_pcm_hw_rule_func_t func, void *private,
1026 int dep, ...);
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037static inline int snd_pcm_hw_constraint_single(
1038 struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
1039 unsigned int val)
1040{
1041 return snd_pcm_hw_constraint_minmax(runtime, var, val, val);
1042}
1043
1044int snd_pcm_format_signed(snd_pcm_format_t format);
1045int snd_pcm_format_unsigned(snd_pcm_format_t format);
1046int snd_pcm_format_linear(snd_pcm_format_t format);
1047int snd_pcm_format_little_endian(snd_pcm_format_t format);
1048int snd_pcm_format_big_endian(snd_pcm_format_t format);
1049#if 0
1050
1051
1052
1053
1054
1055
1056
1057int snd_pcm_format_cpu_endian(snd_pcm_format_t format);
1058#endif
1059#ifdef SNDRV_LITTLE_ENDIAN
1060#define snd_pcm_format_cpu_endian(format) snd_pcm_format_little_endian(format)
1061#else
1062#define snd_pcm_format_cpu_endian(format) snd_pcm_format_big_endian(format)
1063#endif
1064int snd_pcm_format_width(snd_pcm_format_t format);
1065int snd_pcm_format_physical_width(snd_pcm_format_t format);
1066ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
1067const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format);
1068int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames);
1069
1070void snd_pcm_set_ops(struct snd_pcm * pcm, int direction,
1071 const struct snd_pcm_ops *ops);
1072void snd_pcm_set_sync(struct snd_pcm_substream *substream);
1073int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,
1074 unsigned int cmd, void *arg);
1075void snd_pcm_period_elapsed(struct snd_pcm_substream *substream);
1076snd_pcm_sframes_t __snd_pcm_lib_xfer(struct snd_pcm_substream *substream,
1077 void *buf, bool interleaved,
1078 snd_pcm_uframes_t frames, bool in_kernel);
1079
1080static inline snd_pcm_sframes_t
1081snd_pcm_lib_write(struct snd_pcm_substream *substream,
1082 const void __user *buf, snd_pcm_uframes_t frames)
1083{
1084 return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, false);
1085}
1086
1087static inline snd_pcm_sframes_t
1088snd_pcm_lib_read(struct snd_pcm_substream *substream,
1089 void __user *buf, snd_pcm_uframes_t frames)
1090{
1091 return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, false);
1092}
1093
1094static inline snd_pcm_sframes_t
1095snd_pcm_lib_writev(struct snd_pcm_substream *substream,
1096 void __user **bufs, snd_pcm_uframes_t frames)
1097{
1098 return __snd_pcm_lib_xfer(substream, (void *)bufs, false, frames, false);
1099}
1100
1101static inline snd_pcm_sframes_t
1102snd_pcm_lib_readv(struct snd_pcm_substream *substream,
1103 void __user **bufs, snd_pcm_uframes_t frames)
1104{
1105 return __snd_pcm_lib_xfer(substream, (void *)bufs, false, frames, false);
1106}
1107
1108static inline snd_pcm_sframes_t
1109snd_pcm_kernel_write(struct snd_pcm_substream *substream,
1110 const void *buf, snd_pcm_uframes_t frames)
1111{
1112 return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, true);
1113}
1114
1115static inline snd_pcm_sframes_t
1116snd_pcm_kernel_read(struct snd_pcm_substream *substream,
1117 void *buf, snd_pcm_uframes_t frames)
1118{
1119 return __snd_pcm_lib_xfer(substream, buf, true, frames, true);
1120}
1121
1122static inline snd_pcm_sframes_t
1123snd_pcm_kernel_writev(struct snd_pcm_substream *substream,
1124 void **bufs, snd_pcm_uframes_t frames)
1125{
1126 return __snd_pcm_lib_xfer(substream, bufs, false, frames, true);
1127}
1128
1129static inline snd_pcm_sframes_t
1130snd_pcm_kernel_readv(struct snd_pcm_substream *substream,
1131 void **bufs, snd_pcm_uframes_t frames)
1132{
1133 return __snd_pcm_lib_xfer(substream, bufs, false, frames, true);
1134}
1135
1136int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime);
1137unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate);
1138unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit);
1139unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a,
1140 unsigned int rates_b);
1141unsigned int snd_pcm_rate_range_to_bits(unsigned int rate_min,
1142 unsigned int rate_max);
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152static inline void snd_pcm_set_runtime_buffer(struct snd_pcm_substream *substream,
1153 struct snd_dma_buffer *bufp)
1154{
1155 struct snd_pcm_runtime *runtime = substream->runtime;
1156 if (bufp) {
1157 runtime->dma_buffer_p = bufp;
1158 runtime->dma_area = bufp->area;
1159 runtime->dma_addr = bufp->addr;
1160 runtime->dma_bytes = bufp->bytes;
1161 } else {
1162 runtime->dma_buffer_p = NULL;
1163 runtime->dma_area = NULL;
1164 runtime->dma_addr = 0;
1165 runtime->dma_bytes = 0;
1166 }
1167}
1168
1169
1170
1171
1172
1173
1174static inline void snd_pcm_gettime(struct snd_pcm_runtime *runtime,
1175 struct timespec *tv)
1176{
1177 switch (runtime->tstamp_type) {
1178 case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC:
1179 ktime_get_ts(tv);
1180 break;
1181 case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW:
1182 getrawmonotonic(tv);
1183 break;
1184 default:
1185 getnstimeofday(tv);
1186 break;
1187 }
1188}
1189
1190
1191
1192
1193
1194int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream);
1195int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm);
1196int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream,
1197 int type, struct device *data,
1198 size_t size, size_t max);
1199int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
1200 int type, void *data,
1201 size_t size, size_t max);
1202int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size);
1203int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream);
1204
1205int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream,
1206 size_t size, gfp_t gfp_flags);
1207int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream);
1208struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
1209 unsigned long offset);
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222static inline int snd_pcm_lib_alloc_vmalloc_buffer
1223 (struct snd_pcm_substream *substream, size_t size)
1224{
1225 return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size,
1226 GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO);
1227}
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240static inline int snd_pcm_lib_alloc_vmalloc_32_buffer
1241 (struct snd_pcm_substream *substream, size_t size)
1242{
1243 return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size,
1244 GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
1245}
1246
1247#define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p)
1248
1249#ifdef CONFIG_SND_DMA_SGBUF
1250
1251
1252
1253#define snd_pcm_substream_sgbuf(substream) \
1254 snd_pcm_get_dma_buf(substream)->private_data
1255
1256struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream,
1257 unsigned long offset);
1258#else
1259
1260
1261
1262#define snd_pcm_sgbuf_ops_page NULL
1263#endif
1264
1265
1266
1267
1268
1269
1270static inline dma_addr_t
1271snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
1272{
1273 return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs);
1274}
1275
1276
1277
1278
1279
1280
1281static inline void *
1282snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
1283{
1284 return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs);
1285}
1286
1287
1288
1289
1290
1291
1292
1293
1294static inline unsigned int
1295snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
1296 unsigned int ofs, unsigned int size)
1297{
1298 return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size);
1299}
1300
1301
1302
1303
1304
1305
1306
1307static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)
1308{
1309 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
1310 atomic_inc(&substream->mmap_count);
1311}
1312
1313
1314
1315
1316
1317
1318
1319static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area)
1320{
1321 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
1322 atomic_dec(&substream->mmap_count);
1323}
1324
1325int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
1326 struct vm_area_struct *area);
1327
1328#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA)
1329#define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP
1330int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_struct *area);
1331#else
1332#define SNDRV_PCM_INFO_MMAP_IOMEM 0
1333#define snd_pcm_lib_mmap_iomem NULL
1334#endif
1335
1336#define snd_pcm_lib_mmap_vmalloc NULL
1337
1338
1339
1340
1341
1342
1343static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
1344{
1345 *max = dma < 4 ? 64 * 1024 : 128 * 1024;
1346}
1347
1348
1349
1350
1351
1352#define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\
1353 (IEC958_AES1_CON_ORIGINAL<<8)|\
1354 (IEC958_AES1_CON_PCM_CODER<<8)|\
1355 (IEC958_AES3_CON_FS_48000<<24))
1356
1357#define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime)
1358
1359const char *snd_pcm_format_name(snd_pcm_format_t format);
1360
1361
1362
1363
1364
1365
1366
1367static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream)
1368{
1369 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1370 return "Playback";
1371 else
1372 return "Capture";
1373}
1374
1375
1376
1377
1378
1379struct snd_pcm_chmap_elem {
1380 unsigned char channels;
1381 unsigned char map[15];
1382};
1383
1384
1385struct snd_pcm_chmap {
1386 struct snd_pcm *pcm;
1387 int stream;
1388 struct snd_kcontrol *kctl;
1389 const struct snd_pcm_chmap_elem *chmap;
1390 unsigned int max_channels;
1391 unsigned int channel_mask;
1392 void *private_data;
1393};
1394
1395
1396
1397
1398
1399
1400static inline struct snd_pcm_substream *
1401snd_pcm_chmap_substream(struct snd_pcm_chmap *info, unsigned int idx)
1402{
1403 struct snd_pcm_substream *s;
1404 for (s = info->pcm->streams[info->stream].substream; s; s = s->next)
1405 if (s->number == idx)
1406 return s;
1407 return NULL;
1408}
1409
1410
1411extern const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[];
1412
1413extern const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[];
1414
1415
1416#define SND_PCM_CHMAP_MASK_24 ((1U << 2) | (1U << 4))
1417#define SND_PCM_CHMAP_MASK_246 (SND_PCM_CHMAP_MASK_24 | (1U << 6))
1418#define SND_PCM_CHMAP_MASK_2468 (SND_PCM_CHMAP_MASK_246 | (1U << 8))
1419
1420int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream,
1421 const struct snd_pcm_chmap_elem *chmap,
1422 int max_channels,
1423 unsigned long private_value,
1424 struct snd_pcm_chmap **info_ret);
1425
1426
1427
1428
1429
1430static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format)
1431{
1432 return 1ULL << (__force int) pcm_format;
1433}
1434
1435
1436#define pcm_err(pcm, fmt, args...) \
1437 dev_err((pcm)->card->dev, fmt, ##args)
1438#define pcm_warn(pcm, fmt, args...) \
1439 dev_warn((pcm)->card->dev, fmt, ##args)
1440#define pcm_dbg(pcm, fmt, args...) \
1441 dev_dbg((pcm)->card->dev, fmt, ##args)
1442
1443#endif
1444