Merge branch 'for-5.7/core' into for-linus
[linux-2.6-microblaze.git] / sound / core / pcm_local.h
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * pcm_local.h - a local header file for snd-pcm module.
4  *
5  * Copyright (c) Takashi Sakamoto <o-takashi@sakamocchi.jp>
6  */
7
8 #ifndef __SOUND_CORE_PCM_LOCAL_H
9 #define __SOUND_CORE_PCM_LOCAL_H
10
11 extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates;
12
13 void snd_interval_mul(const struct snd_interval *a,
14                       const struct snd_interval *b, struct snd_interval *c);
15 void snd_interval_div(const struct snd_interval *a,
16                       const struct snd_interval *b, struct snd_interval *c);
17 void snd_interval_muldivk(const struct snd_interval *a,
18                           const struct snd_interval *b,
19                           unsigned int k, struct snd_interval *c);
20 void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k,
21                           const struct snd_interval *b, struct snd_interval *c);
22
23 int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime,
24                                snd_pcm_hw_param_t var, u_int32_t mask);
25
26 int pcm_lib_apply_appl_ptr(struct snd_pcm_substream *substream,
27                            snd_pcm_uframes_t appl_ptr);
28 int snd_pcm_update_state(struct snd_pcm_substream *substream,
29                          struct snd_pcm_runtime *runtime);
30 int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream);
31
32 void snd_pcm_playback_silence(struct snd_pcm_substream *substream,
33                               snd_pcm_uframes_t new_hw_ptr);
34
35 static inline snd_pcm_uframes_t
36 snd_pcm_avail(struct snd_pcm_substream *substream)
37 {
38         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
39                 return snd_pcm_playback_avail(substream->runtime);
40         else
41                 return snd_pcm_capture_avail(substream->runtime);
42 }
43
44 static inline snd_pcm_uframes_t
45 snd_pcm_hw_avail(struct snd_pcm_substream *substream)
46 {
47         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
48                 return snd_pcm_playback_hw_avail(substream->runtime);
49         else
50                 return snd_pcm_capture_hw_avail(substream->runtime);
51 }
52
53 #ifdef CONFIG_SND_PCM_TIMER
54 void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream);
55 void snd_pcm_timer_init(struct snd_pcm_substream *substream);
56 void snd_pcm_timer_done(struct snd_pcm_substream *substream);
57 #else
58 static inline void
59 snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream) {}
60 static inline void snd_pcm_timer_init(struct snd_pcm_substream *substream) {}
61 static inline void snd_pcm_timer_done(struct snd_pcm_substream *substream) {}
62 #endif
63
64 void __snd_pcm_xrun(struct snd_pcm_substream *substream);
65 void snd_pcm_group_init(struct snd_pcm_group *group);
66
67 #ifdef CONFIG_SND_DMA_SGBUF
68 struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream,
69                                     unsigned long offset);
70 #endif
71
72 #define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime)
73
74 #endif  /* __SOUND_CORE_PCM_LOCAL_H */