1
2#ifndef __SOUND_PCM_H
3#define __SOUND_PCM_H
4
5
6
7
8
9
10
11#include <sound/asound.h>
12#include <sound/memalloc.h>
13#include <sound/minors.h>
14#include <linux/poll.h>
15#include <linux/mm.h>
16#include <linux/bitops.h>
17#include <linux/pm_qos.h>
18#include <linux/refcount.h>
19
20#define snd_pcm_substream_chip(substream) ((substream)->private_data)
21#define snd_pcm_chip(pcm) ((pcm)->private_data)
22
23#if IS_ENABLED(CONFIG_SND_PCM_OSS)
24#include <sound/pcm_oss.h>
25#endif
26
27
28
29
30
31struct snd_pcm_hardware {
32 unsigned int info;
33 u64 formats;
34 unsigned int rates;
35 unsigned int rate_min;
36 unsigned int rate_max;
37 unsigned int channels_min;
38 unsigned int channels_max;
39 size_t buffer_bytes_max;
40 size_t period_bytes_min;
41 size_t period_bytes_max;
42 unsigned int periods_min;
43 unsigned int periods_max;
44 size_t fifo_size;
45};
46
47struct snd_pcm_substream;
48
49struct snd_pcm_audio_tstamp_config;
50struct snd_pcm_audio_tstamp_report;
51
52struct snd_pcm_ops {
53 int (*open)(struct snd_pcm_substream *substream);
54 int (*close)(struct snd_pcm_substream *substream);
55 int (*ioctl)(struct snd_pcm_substream * substream,
56 unsigned int cmd, void *arg);
57 int (*hw_params)(struct snd_pcm_substream *substream,
58 struct snd_pcm_hw_params *params);
59 int (*hw_free)(struct snd_pcm_substream *substream);
60 int (*prepare)(struct snd_pcm_substream *substream);
61 int (*trigger)(struct snd_pcm_substream *substream, int cmd);
62 int (*sync_stop)(struct snd_pcm_substream *substream);
63 snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *substream);
64 int (*get_time_info)(struct snd_pcm_substream *substream,
65 struct timespec *system_ts, struct timespec *audio_ts,
66 struct snd_pcm_audio_tstamp_config *audio_tstamp_config,
67 struct snd_pcm_audio_tstamp_report *audio_tstamp_report);
68 int (*fill_silence)(struct snd_pcm_substream *substream, int channel,
69 unsigned long pos, unsigned long bytes);
70 int (*copy_user)(struct snd_pcm_substream *substream, int channel,
71 unsigned long pos, void __user *buf,
72 unsigned long bytes);
73 int (*copy_kernel)(struct snd_pcm_substream *substream, int channel,
74 unsigned long pos, void *buf, unsigned long bytes);
75 struct page *(*page)(struct snd_pcm_substream *substream,
76 unsigned long offset);
77 int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma);
78 int (*ack)(struct snd_pcm_substream *substream);
79};
80
81
82
83
84
85#if defined(CONFIG_SND_DYNAMIC_MINORS)
86#define SNDRV_PCM_DEVICES (SNDRV_OS_MINORS-2)
87#else
88#define SNDRV_PCM_DEVICES 8
89#endif
90
91#define SNDRV_PCM_IOCTL1_RESET 0
92
93#define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2
94
95#define SNDRV_PCM_IOCTL1_FIFO_SIZE 4
96
97#define SNDRV_PCM_TRIGGER_STOP 0
98#define SNDRV_PCM_TRIGGER_START 1
99#define SNDRV_PCM_TRIGGER_PAUSE_PUSH 3
100#define SNDRV_PCM_TRIGGER_PAUSE_RELEASE 4
101#define SNDRV_PCM_TRIGGER_SUSPEND 5
102#define SNDRV_PCM_TRIGGER_RESUME 6
103#define SNDRV_PCM_TRIGGER_DRAIN 7
104
105#define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1)
106
107
108#define SNDRV_PCM_RATE_5512 (1<<0)
109#define SNDRV_PCM_RATE_8000 (1<<1)
110#define SNDRV_PCM_RATE_11025 (1<<2)
111#define SNDRV_PCM_RATE_16000 (1<<3)
112#define SNDRV_PCM_RATE_22050 (1<<4)
113#define SNDRV_PCM_RATE_32000 (1<<5)
114#define SNDRV_PCM_RATE_44100 (1<<6)
115#define SNDRV_PCM_RATE_48000 (1<<7)
116#define SNDRV_PCM_RATE_64000 (1<<8)
117#define SNDRV_PCM_RATE_88200 (1<<9)
118#define SNDRV_PCM_RATE_96000 (1<<10)
119#define SNDRV_PCM_RATE_176400 (1<<11)
120#define SNDRV_PCM_RATE_192000 (1<<12)
121#define SNDRV_PCM_RATE_352800 (1<<13)
122#define SNDRV_PCM_RATE_384000 (1<<14)
123
124#define SNDRV_PCM_RATE_CONTINUOUS (1<<30)
125#define SNDRV_PCM_RATE_KNOT (1<<31)
126
127#define SNDRV_PCM_RATE_8000_44100 (SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\
128 SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\
129 SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100)
130#define SNDRV_PCM_RATE_8000_48000 (SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000)
131#define SNDRV_PCM_RATE_8000_96000 (SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\
132 SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000)
133#define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\
134 SNDRV_PCM_RATE_192000)
135#define SNDRV_PCM_RATE_8000_384000 (SNDRV_PCM_RATE_8000_192000|\
136 SNDRV_PCM_RATE_352800|\
137 SNDRV_PCM_RATE_384000)
138#define _SNDRV_PCM_FMTBIT(fmt) (1ULL << (__force int)SNDRV_PCM_FORMAT_##fmt)
139#define SNDRV_PCM_FMTBIT_S8 _SNDRV_PCM_FMTBIT(S8)
140#define SNDRV_PCM_FMTBIT_U8 _SNDRV_PCM_FMTBIT(U8)
141#define SNDRV_PCM_FMTBIT_S16_LE _SNDRV_PCM_FMTBIT(S16_LE)
142#define SNDRV_PCM_FMTBIT_S16_BE _SNDRV_PCM_FMTBIT(S16_BE)
143#define SNDRV_PCM_FMTBIT_U16_LE _SNDRV_PCM_FMTBIT(U16_LE)
144#define SNDRV_PCM_FMTBIT_U16_BE _SNDRV_PCM_FMTBIT(U16_BE)
145#define SNDRV_PCM_FMTBIT_S24_LE _SNDRV_PCM_FMTBIT(S24_LE)
146#define SNDRV_PCM_FMTBIT_S24_BE _SNDRV_PCM_FMTBIT(S24_BE)
147#define SNDRV_PCM_FMTBIT_U24_LE _SNDRV_PCM_FMTBIT(U24_LE)
148#define SNDRV_PCM_FMTBIT_U24_BE _SNDRV_PCM_FMTBIT(U24_BE)
149#define SNDRV_PCM_FMTBIT_S32_LE _SNDRV_PCM_FMTBIT(S32_LE)
150#define SNDRV_PCM_FMTBIT_S32_BE _SNDRV_PCM_FMTBIT(S32_BE)
151#define SNDRV_PCM_FMTBIT_U32_LE _SNDRV_PCM_FMTBIT(U32_LE)
152#define SNDRV_PCM_FMTBIT_U32_BE _SNDRV_PCM_FMTBIT(U32_BE)
153#define SNDRV_PCM_FMTBIT_FLOAT_LE _SNDRV_PCM_FMTBIT(FLOAT_LE)
154#define SNDRV_PCM_FMTBIT_FLOAT_BE _SNDRV_PCM_FMTBIT(FLOAT_BE)
155#define SNDRV_PCM_FMTBIT_FLOAT64_LE _SNDRV_PCM_FMTBIT(FLOAT64_LE)
156#define SNDRV_PCM_FMTBIT_FLOAT64_BE _SNDRV_PCM_FMTBIT(FLOAT64_BE)
157#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_LE)
158#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_BE)
159#define SNDRV_PCM_FMTBIT_MU_LAW _SNDRV_PCM_FMTBIT(MU_LAW)
160#define SNDRV_PCM_FMTBIT_A_LAW _SNDRV_PCM_FMTBIT(A_LAW)
161#define SNDRV_PCM_FMTBIT_IMA_ADPCM _SNDRV_PCM_FMTBIT(IMA_ADPCM)
162#define SNDRV_PCM_FMTBIT_MPEG _SNDRV_PCM_FMTBIT(MPEG)
163#define SNDRV_PCM_FMTBIT_GSM _SNDRV_PCM_FMTBIT(GSM)
164#define SNDRV_PCM_FMTBIT_S20_LE _SNDRV_PCM_FMTBIT(S20_LE)
165#define SNDRV_PCM_FMTBIT_U20_LE _SNDRV_PCM_FMTBIT(U20_LE)
166#define SNDRV_PCM_FMTBIT_S20_BE _SNDRV_PCM_FMTBIT(S20_BE)
167#define SNDRV_PCM_FMTBIT_U20_BE _SNDRV_PCM_FMTBIT(U20_BE)
168#define SNDRV_PCM_FMTBIT_SPECIAL _SNDRV_PCM_FMTBIT(SPECIAL)
169#define SNDRV_PCM_FMTBIT_S24_3LE _SNDRV_PCM_FMTBIT(S24_3LE)
170#define SNDRV_PCM_FMTBIT_U24_3LE _SNDRV_PCM_FMTBIT(U24_3LE)
171#define SNDRV_PCM_FMTBIT_S24_3BE _SNDRV_PCM_FMTBIT(S24_3BE)
172#define SNDRV_PCM_FMTBIT_U24_3BE _SNDRV_PCM_FMTBIT(U24_3BE)
173#define SNDRV_PCM_FMTBIT_S20_3LE _SNDRV_PCM_FMTBIT(S20_3LE)
174#define SNDRV_PCM_FMTBIT_U20_3LE _SNDRV_PCM_FMTBIT(U20_3LE)
175#define SNDRV_PCM_FMTBIT_S20_3BE _SNDRV_PCM_FMTBIT(S20_3BE)
176#define SNDRV_PCM_FMTBIT_U20_3BE _SNDRV_PCM_FMTBIT(U20_3BE)
177#define SNDRV_PCM_FMTBIT_S18_3LE _SNDRV_PCM_FMTBIT(S18_3LE)
178#define SNDRV_PCM_FMTBIT_U18_3LE _SNDRV_PCM_FMTBIT(U18_3LE)
179#define SNDRV_PCM_FMTBIT_S18_3BE _SNDRV_PCM_FMTBIT(S18_3BE)
180#define SNDRV_PCM_FMTBIT_U18_3BE _SNDRV_PCM_FMTBIT(U18_3BE)
181#define SNDRV_PCM_FMTBIT_G723_24 _SNDRV_PCM_FMTBIT(G723_24)
182#define SNDRV_PCM_FMTBIT_G723_24_1B _SNDRV_PCM_FMTBIT(G723_24_1B)
183#define SNDRV_PCM_FMTBIT_G723_40 _SNDRV_PCM_FMTBIT(G723_40)
184#define SNDRV_PCM_FMTBIT_G723_40_1B _SNDRV_PCM_FMTBIT(G723_40_1B)
185#define SNDRV_PCM_FMTBIT_DSD_U8 _SNDRV_PCM_FMTBIT(DSD_U8)
186#define SNDRV_PCM_FMTBIT_DSD_U16_LE _SNDRV_PCM_FMTBIT(DSD_U16_LE)
187#define SNDRV_PCM_FMTBIT_DSD_U32_LE _SNDRV_PCM_FMTBIT(DSD_U32_LE)
188#define SNDRV_PCM_FMTBIT_DSD_U16_BE _SNDRV_PCM_FMTBIT(DSD_U16_BE)
189#define SNDRV_PCM_FMTBIT_DSD_U32_BE _SNDRV_PCM_FMTBIT(DSD_U32_BE)
190
191#ifdef SNDRV_LITTLE_ENDIAN
192#define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE
193#define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE
194#define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE
195#define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE
196#define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE
197#define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE
198#define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE
199#define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE
200#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE
201#define SNDRV_PCM_FMTBIT_S20 SNDRV_PCM_FMTBIT_S20_LE
202#define SNDRV_PCM_FMTBIT_U20 SNDRV_PCM_FMTBIT_U20_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#define SNDRV_PCM_FMTBIT_S20 SNDRV_PCM_FMTBIT_S20_BE
215#define SNDRV_PCM_FMTBIT_U20 SNDRV_PCM_FMTBIT_U20_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 bool stop_operating;
400
401
402 void *private_data;
403 void (*private_free)(struct snd_pcm_runtime *runtime);
404
405
406 struct snd_pcm_hardware hw;
407 struct snd_pcm_hw_constraints hw_constraints;
408
409
410 unsigned int timer_resolution;
411 int tstamp_type;
412
413
414 unsigned char *dma_area;
415 dma_addr_t dma_addr;
416 size_t dma_bytes;
417
418 struct snd_dma_buffer *dma_buffer_p;
419 unsigned int buffer_changed:1;
420
421
422 struct snd_pcm_audio_tstamp_config audio_tstamp_config;
423 struct snd_pcm_audio_tstamp_report audio_tstamp_report;
424 struct timespec driver_tstamp;
425
426#if IS_ENABLED(CONFIG_SND_PCM_OSS)
427
428 struct snd_pcm_oss_runtime oss;
429#endif
430};
431
432struct snd_pcm_group {
433 spinlock_t lock;
434 struct mutex mutex;
435 struct list_head substreams;
436 refcount_t refs;
437};
438
439struct pid;
440
441struct snd_pcm_substream {
442 struct snd_pcm *pcm;
443 struct snd_pcm_str *pstr;
444 void *private_data;
445 int number;
446 char name[32];
447 int stream;
448 struct pm_qos_request latency_pm_qos_req;
449 size_t buffer_bytes_max;
450 struct snd_dma_buffer dma_buffer;
451 size_t dma_max;
452
453 const struct snd_pcm_ops *ops;
454
455 struct snd_pcm_runtime *runtime;
456
457 struct snd_timer *timer;
458 unsigned timer_running: 1;
459 long wait_time;
460
461 struct snd_pcm_substream *next;
462
463 struct list_head link_list;
464 struct snd_pcm_group self_group;
465 struct snd_pcm_group *group;
466
467 int ref_count;
468 atomic_t mmap_count;
469 unsigned int f_flags;
470 void (*pcm_release)(struct snd_pcm_substream *);
471 struct pid *pid;
472#if IS_ENABLED(CONFIG_SND_PCM_OSS)
473
474 struct snd_pcm_oss_substream oss;
475#endif
476#ifdef CONFIG_SND_VERBOSE_PROCFS
477 struct snd_info_entry *proc_root;
478#endif
479
480 unsigned int hw_opened: 1;
481 unsigned int managed_buffer_alloc:1;
482};
483
484#define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0)
485
486
487struct snd_pcm_str {
488 int stream;
489 struct snd_pcm *pcm;
490
491 unsigned int substream_count;
492 unsigned int substream_opened;
493 struct snd_pcm_substream *substream;
494#if IS_ENABLED(CONFIG_SND_PCM_OSS)
495
496 struct snd_pcm_oss_stream oss;
497#endif
498#ifdef CONFIG_SND_VERBOSE_PROCFS
499 struct snd_info_entry *proc_root;
500#ifdef CONFIG_SND_PCM_XRUN_DEBUG
501 unsigned int xrun_debug;
502#endif
503#endif
504 struct snd_kcontrol *chmap_kctl;
505 struct device dev;
506};
507
508struct snd_pcm {
509 struct snd_card *card;
510 struct list_head list;
511 int device;
512 unsigned int info_flags;
513 unsigned short dev_class;
514 unsigned short dev_subclass;
515 char id[64];
516 char name[80];
517 struct snd_pcm_str streams[2];
518 struct mutex open_mutex;
519 wait_queue_head_t open_wait;
520 void *private_data;
521 void (*private_free) (struct snd_pcm *pcm);
522 bool internal;
523 bool nonatomic;
524 bool no_device_suspend;
525#if IS_ENABLED(CONFIG_SND_PCM_OSS)
526 struct snd_pcm_oss oss;
527#endif
528};
529
530
531
532
533
534extern const struct file_operations snd_pcm_f_ops[2];
535
536int snd_pcm_new(struct snd_card *card, const char *id, int device,
537 int playback_count, int capture_count,
538 struct snd_pcm **rpcm);
539int snd_pcm_new_internal(struct snd_card *card, const char *id, int device,
540 int playback_count, int capture_count,
541 struct snd_pcm **rpcm);
542int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count);
543
544#if IS_ENABLED(CONFIG_SND_PCM_OSS)
545struct snd_pcm_notify {
546 int (*n_register) (struct snd_pcm * pcm);
547 int (*n_disconnect) (struct snd_pcm * pcm);
548 int (*n_unregister) (struct snd_pcm * pcm);
549 struct list_head list;
550};
551int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree);
552#endif
553
554
555
556
557
558int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info);
559int snd_pcm_info_user(struct snd_pcm_substream *substream,
560 struct snd_pcm_info __user *info);
561int snd_pcm_status(struct snd_pcm_substream *substream,
562 struct snd_pcm_status *status);
563int snd_pcm_start(struct snd_pcm_substream *substream);
564int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t status);
565int snd_pcm_drain_done(struct snd_pcm_substream *substream);
566int snd_pcm_stop_xrun(struct snd_pcm_substream *substream);
567#ifdef CONFIG_PM
568int snd_pcm_suspend_all(struct snd_pcm *pcm);
569#else
570static inline int snd_pcm_suspend_all(struct snd_pcm *pcm)
571{
572 return 0;
573}
574#endif
575int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg);
576int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file,
577 struct snd_pcm_substream **rsubstream);
578void snd_pcm_release_substream(struct snd_pcm_substream *substream);
579int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file,
580 struct snd_pcm_substream **rsubstream);
581void snd_pcm_detach_substream(struct snd_pcm_substream *substream);
582int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area);
583
584
585#ifdef CONFIG_SND_DEBUG
586void snd_pcm_debug_name(struct snd_pcm_substream *substream,
587 char *name, size_t len);
588#else
589static inline void
590snd_pcm_debug_name(struct snd_pcm_substream *substream, char *buf, size_t size)
591{
592 *buf = 0;
593}
594#endif
595
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603
604
605
606static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream)
607{
608 return substream->group != &substream->self_group;
609}
610
611void snd_pcm_stream_lock(struct snd_pcm_substream *substream);
612void snd_pcm_stream_unlock(struct snd_pcm_substream *substream);
613void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream);
614void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream);
615unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream);
616
617
618
619
620
621
622
623
624
625
626#define snd_pcm_stream_lock_irqsave(substream, flags) \
627 do { \
628 typecheck(unsigned long, flags); \
629 flags = _snd_pcm_stream_lock_irqsave(substream); \
630 } while (0)
631void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream,
632 unsigned long flags);
633
634
635
636
637
638
639
640
641
642
643#define snd_pcm_group_for_each_entry(s, substream) \
644 list_for_each_entry(s, &substream->group->substreams, link_list)
645
646
647
648
649
650
651
652
653static inline int snd_pcm_running(struct snd_pcm_substream *substream)
654{
655 return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING ||
656 (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING &&
657 substream->stream == SNDRV_PCM_STREAM_PLAYBACK));
658}
659
660
661
662
663
664
665static inline ssize_t bytes_to_samples(struct snd_pcm_runtime *runtime, ssize_t size)
666{
667 return size * 8 / runtime->sample_bits;
668}
669
670
671
672
673
674
675static inline snd_pcm_sframes_t bytes_to_frames(struct snd_pcm_runtime *runtime, ssize_t size)
676{
677 return size * 8 / runtime->frame_bits;
678}
679
680
681
682
683
684
685static inline ssize_t samples_to_bytes(struct snd_pcm_runtime *runtime, ssize_t size)
686{
687 return size * runtime->sample_bits / 8;
688}
689
690
691
692
693
694
695static inline ssize_t frames_to_bytes(struct snd_pcm_runtime *runtime, snd_pcm_sframes_t size)
696{
697 return size * runtime->frame_bits / 8;
698}
699
700
701
702
703
704
705static inline int frame_aligned(struct snd_pcm_runtime *runtime, ssize_t bytes)
706{
707 return bytes % runtime->byte_align == 0;
708}
709
710
711
712
713
714static inline size_t snd_pcm_lib_buffer_bytes(struct snd_pcm_substream *substream)
715{
716 struct snd_pcm_runtime *runtime = substream->runtime;
717 return frames_to_bytes(runtime, runtime->buffer_size);
718}
719
720
721
722
723
724static inline size_t snd_pcm_lib_period_bytes(struct snd_pcm_substream *substream)
725{
726 struct snd_pcm_runtime *runtime = substream->runtime;
727 return frames_to_bytes(runtime, runtime->period_size);
728}
729
730
731
732
733
734
735
736static inline snd_pcm_uframes_t snd_pcm_playback_avail(struct snd_pcm_runtime *runtime)
737{
738 snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr;
739 if (avail < 0)
740 avail += runtime->boundary;
741 else if ((snd_pcm_uframes_t) avail >= runtime->boundary)
742 avail -= runtime->boundary;
743 return avail;
744}
745
746
747
748
749
750
751
752static inline snd_pcm_uframes_t snd_pcm_capture_avail(struct snd_pcm_runtime *runtime)
753{
754 snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr;
755 if (avail < 0)
756 avail += runtime->boundary;
757 return avail;
758}
759
760
761
762
763
764static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(struct snd_pcm_runtime *runtime)
765{
766 return runtime->buffer_size - snd_pcm_playback_avail(runtime);
767}
768
769
770
771
772
773static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime *runtime)
774{
775 return runtime->buffer_size - snd_pcm_capture_avail(runtime);
776}
777
778
779
780
781
782
783
784
785
786static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream)
787{
788 struct snd_pcm_runtime *runtime = substream->runtime;
789 return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min;
790}
791
792
793
794
795
796
797
798
799
800static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream)
801{
802 struct snd_pcm_runtime *runtime = substream->runtime;
803 return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min;
804}
805
806
807
808
809
810
811
812
813
814
815static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream)
816{
817 struct snd_pcm_runtime *runtime = substream->runtime;
818
819 if (runtime->stop_threshold >= runtime->boundary)
820 return 1;
821 return snd_pcm_playback_avail(runtime) < runtime->buffer_size;
822}
823
824
825
826
827
828
829
830
831
832static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream)
833{
834 struct snd_pcm_runtime *runtime = substream->runtime;
835 return snd_pcm_playback_avail(runtime) >= runtime->buffer_size;
836}
837
838
839
840
841
842
843
844
845
846static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream)
847{
848 struct snd_pcm_runtime *runtime = substream->runtime;
849 return snd_pcm_capture_avail(runtime) == 0;
850}
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream,
867 struct snd_pcm_substream *master)
868{
869 substream->runtime->trigger_master = master;
870}
871
872static inline int hw_is_mask(int var)
873{
874 return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK &&
875 var <= SNDRV_PCM_HW_PARAM_LAST_MASK;
876}
877
878static inline int hw_is_interval(int var)
879{
880 return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL &&
881 var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL;
882}
883
884static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params,
885 snd_pcm_hw_param_t var)
886{
887 return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK];
888}
889
890static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params,
891 snd_pcm_hw_param_t var)
892{
893 return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL];
894}
895
896static inline const struct snd_mask *hw_param_mask_c(const 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 const struct snd_interval *hw_param_interval_c(const 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
908
909
910
911
912static inline unsigned int params_channels(const struct snd_pcm_hw_params *p)
913{
914 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_CHANNELS)->min;
915}
916
917
918
919
920
921static inline unsigned int params_rate(const struct snd_pcm_hw_params *p)
922{
923 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_RATE)->min;
924}
925
926
927
928
929
930static inline unsigned int params_period_size(const struct snd_pcm_hw_params *p)
931{
932 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min;
933}
934
935
936
937
938
939static inline unsigned int params_periods(const struct snd_pcm_hw_params *p)
940{
941 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIODS)->min;
942}
943
944
945
946
947
948static inline unsigned int params_buffer_size(const struct snd_pcm_hw_params *p)
949{
950 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min;
951}
952
953
954
955
956
957static inline unsigned int params_buffer_bytes(const struct snd_pcm_hw_params *p)
958{
959 return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min;
960}
961
962int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v);
963int snd_interval_list(struct snd_interval *i, unsigned int count,
964 const unsigned int *list, unsigned int mask);
965int snd_interval_ranges(struct snd_interval *i, unsigned int count,
966 const struct snd_interval *list, unsigned int mask);
967int snd_interval_ratnum(struct snd_interval *i,
968 unsigned int rats_count, const struct snd_ratnum *rats,
969 unsigned int *nump, unsigned int *denp);
970
971void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params);
972void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var);
973
974int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params);
975
976int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
977 u_int64_t mask);
978int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
979 unsigned int min, unsigned int max);
980int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var);
981int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime,
982 unsigned int cond,
983 snd_pcm_hw_param_t var,
984 const struct snd_pcm_hw_constraint_list *l);
985int snd_pcm_hw_constraint_ranges(struct snd_pcm_runtime *runtime,
986 unsigned int cond,
987 snd_pcm_hw_param_t var,
988 const struct snd_pcm_hw_constraint_ranges *r);
989int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime,
990 unsigned int cond,
991 snd_pcm_hw_param_t var,
992 const struct snd_pcm_hw_constraint_ratnums *r);
993int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime,
994 unsigned int cond,
995 snd_pcm_hw_param_t var,
996 const struct snd_pcm_hw_constraint_ratdens *r);
997int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime,
998 unsigned int cond,
999 unsigned int width,
1000 unsigned int msbits);
1001int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime,
1002 unsigned int cond,
1003 snd_pcm_hw_param_t var,
1004 unsigned long step);
1005int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime,
1006 unsigned int cond,
1007 snd_pcm_hw_param_t var);
1008int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime,
1009 unsigned int base_rate);
1010int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime,
1011 unsigned int cond,
1012 int var,
1013 snd_pcm_hw_rule_func_t func, void *private,
1014 int dep, ...);
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025static inline int snd_pcm_hw_constraint_single(
1026 struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var,
1027 unsigned int val)
1028{
1029 return snd_pcm_hw_constraint_minmax(runtime, var, val, val);
1030}
1031
1032int snd_pcm_format_signed(snd_pcm_format_t format);
1033int snd_pcm_format_unsigned(snd_pcm_format_t format);
1034int snd_pcm_format_linear(snd_pcm_format_t format);
1035int snd_pcm_format_little_endian(snd_pcm_format_t format);
1036int snd_pcm_format_big_endian(snd_pcm_format_t format);
1037#if 0
1038
1039
1040
1041
1042
1043
1044
1045int snd_pcm_format_cpu_endian(snd_pcm_format_t format);
1046#endif
1047#ifdef SNDRV_LITTLE_ENDIAN
1048#define snd_pcm_format_cpu_endian(format) snd_pcm_format_little_endian(format)
1049#else
1050#define snd_pcm_format_cpu_endian(format) snd_pcm_format_big_endian(format)
1051#endif
1052int snd_pcm_format_width(snd_pcm_format_t format);
1053int snd_pcm_format_physical_width(snd_pcm_format_t format);
1054ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples);
1055const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format);
1056int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames);
1057
1058void snd_pcm_set_ops(struct snd_pcm * pcm, int direction,
1059 const struct snd_pcm_ops *ops);
1060void snd_pcm_set_sync(struct snd_pcm_substream *substream);
1061int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream,
1062 unsigned int cmd, void *arg);
1063void snd_pcm_period_elapsed(struct snd_pcm_substream *substream);
1064snd_pcm_sframes_t __snd_pcm_lib_xfer(struct snd_pcm_substream *substream,
1065 void *buf, bool interleaved,
1066 snd_pcm_uframes_t frames, bool in_kernel);
1067
1068static inline snd_pcm_sframes_t
1069snd_pcm_lib_write(struct snd_pcm_substream *substream,
1070 const void __user *buf, snd_pcm_uframes_t frames)
1071{
1072 return __snd_pcm_lib_xfer(substream, (void __force *)buf, true, frames, false);
1073}
1074
1075static inline snd_pcm_sframes_t
1076snd_pcm_lib_read(struct snd_pcm_substream *substream,
1077 void __user *buf, snd_pcm_uframes_t frames)
1078{
1079 return __snd_pcm_lib_xfer(substream, (void __force *)buf, true, frames, false);
1080}
1081
1082static inline snd_pcm_sframes_t
1083snd_pcm_lib_writev(struct snd_pcm_substream *substream,
1084 void __user **bufs, snd_pcm_uframes_t frames)
1085{
1086 return __snd_pcm_lib_xfer(substream, (void *)bufs, false, frames, false);
1087}
1088
1089static inline snd_pcm_sframes_t
1090snd_pcm_lib_readv(struct snd_pcm_substream *substream,
1091 void __user **bufs, snd_pcm_uframes_t frames)
1092{
1093 return __snd_pcm_lib_xfer(substream, (void *)bufs, false, frames, false);
1094}
1095
1096static inline snd_pcm_sframes_t
1097snd_pcm_kernel_write(struct snd_pcm_substream *substream,
1098 const void *buf, snd_pcm_uframes_t frames)
1099{
1100 return __snd_pcm_lib_xfer(substream, (void *)buf, true, frames, true);
1101}
1102
1103static inline snd_pcm_sframes_t
1104snd_pcm_kernel_read(struct snd_pcm_substream *substream,
1105 void *buf, snd_pcm_uframes_t frames)
1106{
1107 return __snd_pcm_lib_xfer(substream, buf, true, frames, true);
1108}
1109
1110static inline snd_pcm_sframes_t
1111snd_pcm_kernel_writev(struct snd_pcm_substream *substream,
1112 void **bufs, snd_pcm_uframes_t frames)
1113{
1114 return __snd_pcm_lib_xfer(substream, bufs, false, frames, true);
1115}
1116
1117static inline snd_pcm_sframes_t
1118snd_pcm_kernel_readv(struct snd_pcm_substream *substream,
1119 void **bufs, snd_pcm_uframes_t frames)
1120{
1121 return __snd_pcm_lib_xfer(substream, bufs, false, frames, true);
1122}
1123
1124int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime);
1125unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate);
1126unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit);
1127unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a,
1128 unsigned int rates_b);
1129unsigned int snd_pcm_rate_range_to_bits(unsigned int rate_min,
1130 unsigned int rate_max);
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140static inline void snd_pcm_set_runtime_buffer(struct snd_pcm_substream *substream,
1141 struct snd_dma_buffer *bufp)
1142{
1143 struct snd_pcm_runtime *runtime = substream->runtime;
1144 if (bufp) {
1145 runtime->dma_buffer_p = bufp;
1146 runtime->dma_area = bufp->area;
1147 runtime->dma_addr = bufp->addr;
1148 runtime->dma_bytes = bufp->bytes;
1149 } else {
1150 runtime->dma_buffer_p = NULL;
1151 runtime->dma_area = NULL;
1152 runtime->dma_addr = 0;
1153 runtime->dma_bytes = 0;
1154 }
1155}
1156
1157
1158
1159
1160
1161
1162static inline void snd_pcm_gettime(struct snd_pcm_runtime *runtime,
1163 struct timespec *tv)
1164{
1165 switch (runtime->tstamp_type) {
1166 case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC:
1167 ktime_get_ts(tv);
1168 break;
1169 case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW:
1170 getrawmonotonic(tv);
1171 break;
1172 default:
1173 getnstimeofday(tv);
1174 break;
1175 }
1176}
1177
1178
1179
1180
1181
1182void snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream);
1183void snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm);
1184void snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream,
1185 int type, struct device *data,
1186 size_t size, size_t max);
1187void snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
1188 int type, void *data,
1189 size_t size, size_t max);
1190int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size);
1191int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream);
1192
1193void snd_pcm_set_managed_buffer(struct snd_pcm_substream *substream, int type,
1194 struct device *data, size_t size, size_t max);
1195void snd_pcm_set_managed_buffer_all(struct snd_pcm *pcm, int type,
1196 struct device *data,
1197 size_t size, size_t max);
1198
1199int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream,
1200 size_t size, gfp_t gfp_flags);
1201int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream);
1202struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream,
1203 unsigned long offset);
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216static inline int snd_pcm_lib_alloc_vmalloc_buffer
1217 (struct snd_pcm_substream *substream, size_t size)
1218{
1219 return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size,
1220 GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO);
1221}
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234static inline int snd_pcm_lib_alloc_vmalloc_32_buffer
1235 (struct snd_pcm_substream *substream, size_t size)
1236{
1237 return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size,
1238 GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
1239}
1240
1241#define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p)
1242
1243#ifdef CONFIG_SND_DMA_SGBUF
1244
1245
1246
1247#define snd_pcm_substream_sgbuf(substream) \
1248 snd_pcm_get_dma_buf(substream)->private_data
1249#endif
1250
1251
1252
1253
1254
1255
1256static inline dma_addr_t
1257snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
1258{
1259 return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs);
1260}
1261
1262
1263
1264
1265
1266
1267static inline void *
1268snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
1269{
1270 return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs);
1271}
1272
1273
1274
1275
1276
1277
1278
1279
1280static inline unsigned int
1281snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream,
1282 unsigned int ofs, unsigned int size)
1283{
1284 return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size);
1285}
1286
1287
1288
1289
1290
1291
1292
1293static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)
1294{
1295 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
1296 atomic_inc(&substream->mmap_count);
1297}
1298
1299
1300
1301
1302
1303
1304
1305static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area)
1306{
1307 struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
1308 atomic_dec(&substream->mmap_count);
1309}
1310
1311int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream,
1312 struct vm_area_struct *area);
1313
1314#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA)
1315#define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP
1316int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_struct *area);
1317#else
1318#define SNDRV_PCM_INFO_MMAP_IOMEM 0
1319#define snd_pcm_lib_mmap_iomem NULL
1320#endif
1321
1322
1323
1324
1325
1326
1327static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
1328{
1329 *max = dma < 4 ? 64 * 1024 : 128 * 1024;
1330}
1331
1332
1333
1334
1335
1336#define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\
1337 (IEC958_AES1_CON_ORIGINAL<<8)|\
1338 (IEC958_AES1_CON_PCM_CODER<<8)|\
1339 (IEC958_AES3_CON_FS_48000<<24))
1340
1341const char *snd_pcm_format_name(snd_pcm_format_t format);
1342
1343
1344
1345
1346
1347
1348
1349static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream)
1350{
1351 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
1352 return "Playback";
1353 else
1354 return "Capture";
1355}
1356
1357
1358
1359
1360
1361struct snd_pcm_chmap_elem {
1362 unsigned char channels;
1363 unsigned char map[15];
1364};
1365
1366
1367struct snd_pcm_chmap {
1368 struct snd_pcm *pcm;
1369 int stream;
1370 struct snd_kcontrol *kctl;
1371 const struct snd_pcm_chmap_elem *chmap;
1372 unsigned int max_channels;
1373 unsigned int channel_mask;
1374 void *private_data;
1375};
1376
1377
1378
1379
1380
1381
1382static inline struct snd_pcm_substream *
1383snd_pcm_chmap_substream(struct snd_pcm_chmap *info, unsigned int idx)
1384{
1385 struct snd_pcm_substream *s;
1386 for (s = info->pcm->streams[info->stream].substream; s; s = s->next)
1387 if (s->number == idx)
1388 return s;
1389 return NULL;
1390}
1391
1392
1393extern const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[];
1394
1395extern const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[];
1396
1397
1398#define SND_PCM_CHMAP_MASK_24 ((1U << 2) | (1U << 4))
1399#define SND_PCM_CHMAP_MASK_246 (SND_PCM_CHMAP_MASK_24 | (1U << 6))
1400#define SND_PCM_CHMAP_MASK_2468 (SND_PCM_CHMAP_MASK_246 | (1U << 8))
1401
1402int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream,
1403 const struct snd_pcm_chmap_elem *chmap,
1404 int max_channels,
1405 unsigned long private_value,
1406 struct snd_pcm_chmap **info_ret);
1407
1408
1409
1410
1411
1412static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format)
1413{
1414 return 1ULL << (__force int) pcm_format;
1415}
1416
1417
1418#define pcm_err(pcm, fmt, args...) \
1419 dev_err((pcm)->card->dev, fmt, ##args)
1420#define pcm_warn(pcm, fmt, args...) \
1421 dev_warn((pcm)->card->dev, fmt, ##args)
1422#define pcm_dbg(pcm, fmt, args...) \
1423 dev_dbg((pcm)->card->dev, fmt, ##args)
1424
1425#endif
1426