]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef __SOUND_PCM_H |
2 | #define __SOUND_PCM_H | |
3 | ||
4 | /* | |
5 | * Digital Audio (PCM) abstract layer | |
c1017a4c | 6 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
1da177e4 LT |
7 | * Abramo Bagnara <abramo@alsa-project.org> |
8 | * | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #include <sound/asound.h> | |
27 | #include <sound/memalloc.h> | |
f90c06a2 | 28 | #include <sound/minors.h> |
1da177e4 | 29 | #include <linux/poll.h> |
f23f6e08 | 30 | #include <linux/mm.h> |
1da177e4 | 31 | #include <linux/bitops.h> |
e8db0be1 | 32 | #include <linux/pm_qos.h> |
1da177e4 | 33 | |
1da177e4 LT |
34 | #define snd_pcm_substream_chip(substream) ((substream)->private_data) |
35 | #define snd_pcm_chip(pcm) ((pcm)->private_data) | |
36 | ||
1da177e4 | 37 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
a1ce3928 | 38 | #include <sound/pcm_oss.h> |
1da177e4 LT |
39 | #endif |
40 | ||
41 | /* | |
42 | * Hardware (lowlevel) section | |
43 | */ | |
44 | ||
877211f5 | 45 | struct snd_pcm_hardware { |
1da177e4 LT |
46 | unsigned int info; /* SNDRV_PCM_INFO_* */ |
47 | u64 formats; /* SNDRV_PCM_FMTBIT_* */ | |
48 | unsigned int rates; /* SNDRV_PCM_RATE_* */ | |
49 | unsigned int rate_min; /* min rate */ | |
50 | unsigned int rate_max; /* max rate */ | |
51 | unsigned int channels_min; /* min channels */ | |
52 | unsigned int channels_max; /* max channels */ | |
53 | size_t buffer_bytes_max; /* max buffer size */ | |
54 | size_t period_bytes_min; /* min period size */ | |
55 | size_t period_bytes_max; /* max period size */ | |
56 | unsigned int periods_min; /* min # of periods */ | |
57 | unsigned int periods_max; /* max # of periods */ | |
58 | size_t fifo_size; /* fifo size in bytes */ | |
877211f5 | 59 | }; |
1da177e4 | 60 | |
e0e6ce03 RD |
61 | struct snd_pcm_substream; |
62 | ||
877211f5 TI |
63 | struct snd_pcm_ops { |
64 | int (*open)(struct snd_pcm_substream *substream); | |
65 | int (*close)(struct snd_pcm_substream *substream); | |
66 | int (*ioctl)(struct snd_pcm_substream * substream, | |
1da177e4 | 67 | unsigned int cmd, void *arg); |
877211f5 TI |
68 | int (*hw_params)(struct snd_pcm_substream *substream, |
69 | struct snd_pcm_hw_params *params); | |
70 | int (*hw_free)(struct snd_pcm_substream *substream); | |
71 | int (*prepare)(struct snd_pcm_substream *substream); | |
72 | int (*trigger)(struct snd_pcm_substream *substream, int cmd); | |
73 | snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *substream); | |
4eeaaeae PLB |
74 | int (*wall_clock)(struct snd_pcm_substream *substream, |
75 | struct timespec *audio_ts); | |
877211f5 TI |
76 | int (*copy)(struct snd_pcm_substream *substream, int channel, |
77 | snd_pcm_uframes_t pos, | |
1da177e4 | 78 | void __user *buf, snd_pcm_uframes_t count); |
877211f5 | 79 | int (*silence)(struct snd_pcm_substream *substream, int channel, |
1da177e4 | 80 | snd_pcm_uframes_t pos, snd_pcm_uframes_t count); |
877211f5 TI |
81 | struct page *(*page)(struct snd_pcm_substream *substream, |
82 | unsigned long offset); | |
83 | int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma); | |
84 | int (*ack)(struct snd_pcm_substream *substream); | |
85 | }; | |
1da177e4 LT |
86 | |
87 | /* | |
88 | * | |
89 | */ | |
90 | ||
f90c06a2 PM |
91 | #if defined(CONFIG_SND_DYNAMIC_MINORS) |
92 | #define SNDRV_PCM_DEVICES (SNDRV_OS_MINORS-2) | |
93 | #else | |
94 | #define SNDRV_PCM_DEVICES 8 | |
95 | #endif | |
896e6cc2 | 96 | |
1da177e4 LT |
97 | #define SNDRV_PCM_IOCTL1_FALSE ((void *)0) |
98 | #define SNDRV_PCM_IOCTL1_TRUE ((void *)1) | |
99 | ||
100 | #define SNDRV_PCM_IOCTL1_RESET 0 | |
101 | #define SNDRV_PCM_IOCTL1_INFO 1 | |
102 | #define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2 | |
103 | #define SNDRV_PCM_IOCTL1_GSTATE 3 | |
8bea869c | 104 | #define SNDRV_PCM_IOCTL1_FIFO_SIZE 4 |
1da177e4 LT |
105 | |
106 | #define SNDRV_PCM_TRIGGER_STOP 0 | |
107 | #define SNDRV_PCM_TRIGGER_START 1 | |
108 | #define SNDRV_PCM_TRIGGER_PAUSE_PUSH 3 | |
109 | #define SNDRV_PCM_TRIGGER_PAUSE_RELEASE 4 | |
110 | #define SNDRV_PCM_TRIGGER_SUSPEND 5 | |
111 | #define SNDRV_PCM_TRIGGER_RESUME 6 | |
112 | ||
113 | #define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1) | |
114 | ||
115 | /* If you change this don't forget to change rates[] table in pcm_native.c */ | |
116 | #define SNDRV_PCM_RATE_5512 (1<<0) /* 5512Hz */ | |
117 | #define SNDRV_PCM_RATE_8000 (1<<1) /* 8000Hz */ | |
118 | #define SNDRV_PCM_RATE_11025 (1<<2) /* 11025Hz */ | |
119 | #define SNDRV_PCM_RATE_16000 (1<<3) /* 16000Hz */ | |
120 | #define SNDRV_PCM_RATE_22050 (1<<4) /* 22050Hz */ | |
121 | #define SNDRV_PCM_RATE_32000 (1<<5) /* 32000Hz */ | |
122 | #define SNDRV_PCM_RATE_44100 (1<<6) /* 44100Hz */ | |
123 | #define SNDRV_PCM_RATE_48000 (1<<7) /* 48000Hz */ | |
124 | #define SNDRV_PCM_RATE_64000 (1<<8) /* 64000Hz */ | |
125 | #define SNDRV_PCM_RATE_88200 (1<<9) /* 88200Hz */ | |
126 | #define SNDRV_PCM_RATE_96000 (1<<10) /* 96000Hz */ | |
127 | #define SNDRV_PCM_RATE_176400 (1<<11) /* 176400Hz */ | |
128 | #define SNDRV_PCM_RATE_192000 (1<<12) /* 192000Hz */ | |
129 | ||
130 | #define SNDRV_PCM_RATE_CONTINUOUS (1<<30) /* continuous range */ | |
131 | #define SNDRV_PCM_RATE_KNOT (1<<31) /* supports more non-continuos rates */ | |
132 | ||
133 | #define SNDRV_PCM_RATE_8000_44100 (SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\ | |
134 | SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\ | |
135 | SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100) | |
136 | #define SNDRV_PCM_RATE_8000_48000 (SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000) | |
137 | #define SNDRV_PCM_RATE_8000_96000 (SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\ | |
138 | SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000) | |
139 | #define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\ | |
140 | SNDRV_PCM_RATE_192000) | |
fea952e5 CL |
141 | #define _SNDRV_PCM_FMTBIT(fmt) (1ULL << (__force int)SNDRV_PCM_FORMAT_##fmt) |
142 | #define SNDRV_PCM_FMTBIT_S8 _SNDRV_PCM_FMTBIT(S8) | |
143 | #define SNDRV_PCM_FMTBIT_U8 _SNDRV_PCM_FMTBIT(U8) | |
144 | #define SNDRV_PCM_FMTBIT_S16_LE _SNDRV_PCM_FMTBIT(S16_LE) | |
145 | #define SNDRV_PCM_FMTBIT_S16_BE _SNDRV_PCM_FMTBIT(S16_BE) | |
146 | #define SNDRV_PCM_FMTBIT_U16_LE _SNDRV_PCM_FMTBIT(U16_LE) | |
147 | #define SNDRV_PCM_FMTBIT_U16_BE _SNDRV_PCM_FMTBIT(U16_BE) | |
148 | #define SNDRV_PCM_FMTBIT_S24_LE _SNDRV_PCM_FMTBIT(S24_LE) | |
149 | #define SNDRV_PCM_FMTBIT_S24_BE _SNDRV_PCM_FMTBIT(S24_BE) | |
150 | #define SNDRV_PCM_FMTBIT_U24_LE _SNDRV_PCM_FMTBIT(U24_LE) | |
151 | #define SNDRV_PCM_FMTBIT_U24_BE _SNDRV_PCM_FMTBIT(U24_BE) | |
152 | #define SNDRV_PCM_FMTBIT_S32_LE _SNDRV_PCM_FMTBIT(S32_LE) | |
153 | #define SNDRV_PCM_FMTBIT_S32_BE _SNDRV_PCM_FMTBIT(S32_BE) | |
154 | #define SNDRV_PCM_FMTBIT_U32_LE _SNDRV_PCM_FMTBIT(U32_LE) | |
155 | #define SNDRV_PCM_FMTBIT_U32_BE _SNDRV_PCM_FMTBIT(U32_BE) | |
156 | #define SNDRV_PCM_FMTBIT_FLOAT_LE _SNDRV_PCM_FMTBIT(FLOAT_LE) | |
157 | #define SNDRV_PCM_FMTBIT_FLOAT_BE _SNDRV_PCM_FMTBIT(FLOAT_BE) | |
158 | #define SNDRV_PCM_FMTBIT_FLOAT64_LE _SNDRV_PCM_FMTBIT(FLOAT64_LE) | |
159 | #define SNDRV_PCM_FMTBIT_FLOAT64_BE _SNDRV_PCM_FMTBIT(FLOAT64_BE) | |
160 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_LE) | |
161 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_BE) | |
162 | #define SNDRV_PCM_FMTBIT_MU_LAW _SNDRV_PCM_FMTBIT(MU_LAW) | |
163 | #define SNDRV_PCM_FMTBIT_A_LAW _SNDRV_PCM_FMTBIT(A_LAW) | |
164 | #define SNDRV_PCM_FMTBIT_IMA_ADPCM _SNDRV_PCM_FMTBIT(IMA_ADPCM) | |
165 | #define SNDRV_PCM_FMTBIT_MPEG _SNDRV_PCM_FMTBIT(MPEG) | |
166 | #define SNDRV_PCM_FMTBIT_GSM _SNDRV_PCM_FMTBIT(GSM) | |
167 | #define SNDRV_PCM_FMTBIT_SPECIAL _SNDRV_PCM_FMTBIT(SPECIAL) | |
168 | #define SNDRV_PCM_FMTBIT_S24_3LE _SNDRV_PCM_FMTBIT(S24_3LE) | |
169 | #define SNDRV_PCM_FMTBIT_U24_3LE _SNDRV_PCM_FMTBIT(U24_3LE) | |
170 | #define SNDRV_PCM_FMTBIT_S24_3BE _SNDRV_PCM_FMTBIT(S24_3BE) | |
171 | #define SNDRV_PCM_FMTBIT_U24_3BE _SNDRV_PCM_FMTBIT(U24_3BE) | |
172 | #define SNDRV_PCM_FMTBIT_S20_3LE _SNDRV_PCM_FMTBIT(S20_3LE) | |
173 | #define SNDRV_PCM_FMTBIT_U20_3LE _SNDRV_PCM_FMTBIT(U20_3LE) | |
174 | #define SNDRV_PCM_FMTBIT_S20_3BE _SNDRV_PCM_FMTBIT(S20_3BE) | |
175 | #define SNDRV_PCM_FMTBIT_U20_3BE _SNDRV_PCM_FMTBIT(U20_3BE) | |
176 | #define SNDRV_PCM_FMTBIT_S18_3LE _SNDRV_PCM_FMTBIT(S18_3LE) | |
177 | #define SNDRV_PCM_FMTBIT_U18_3LE _SNDRV_PCM_FMTBIT(U18_3LE) | |
178 | #define SNDRV_PCM_FMTBIT_S18_3BE _SNDRV_PCM_FMTBIT(S18_3BE) | |
179 | #define SNDRV_PCM_FMTBIT_U18_3BE _SNDRV_PCM_FMTBIT(U18_3BE) | |
180 | #define SNDRV_PCM_FMTBIT_G723_24 _SNDRV_PCM_FMTBIT(G723_24) | |
181 | #define SNDRV_PCM_FMTBIT_G723_24_1B _SNDRV_PCM_FMTBIT(G723_24_1B) | |
182 | #define SNDRV_PCM_FMTBIT_G723_40 _SNDRV_PCM_FMTBIT(G723_40) | |
183 | #define SNDRV_PCM_FMTBIT_G723_40_1B _SNDRV_PCM_FMTBIT(G723_40_1B) | |
ef7a4f97 DM |
184 | #define SNDRV_PCM_FMTBIT_DSD_U8 _SNDRV_PCM_FMTBIT(DSD_U8) |
185 | #define SNDRV_PCM_FMTBIT_DSD_U16_LE _SNDRV_PCM_FMTBIT(DSD_U16_LE) | |
d4288d3f | 186 | #define SNDRV_PCM_FMTBIT_DSD_U32_LE _SNDRV_PCM_FMTBIT(DSD_U32_LE) |
1da177e4 LT |
187 | |
188 | #ifdef SNDRV_LITTLE_ENDIAN | |
189 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE | |
190 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE | |
191 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE | |
192 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE | |
193 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE | |
194 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE | |
195 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE | |
196 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE | |
197 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | |
198 | #endif | |
199 | #ifdef SNDRV_BIG_ENDIAN | |
200 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_BE | |
201 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_BE | |
202 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_BE | |
203 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_BE | |
204 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_BE | |
205 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_BE | |
206 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_BE | |
207 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_BE | |
208 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE | |
209 | #endif | |
210 | ||
877211f5 TI |
211 | struct snd_pcm_file { |
212 | struct snd_pcm_substream *substream; | |
548a648b | 213 | int no_compat_mmap; |
1da177e4 LT |
214 | }; |
215 | ||
877211f5 TI |
216 | struct snd_pcm_hw_rule; |
217 | typedef int (*snd_pcm_hw_rule_func_t)(struct snd_pcm_hw_params *params, | |
218 | struct snd_pcm_hw_rule *rule); | |
1da177e4 | 219 | |
877211f5 | 220 | struct snd_pcm_hw_rule { |
1da177e4 LT |
221 | unsigned int cond; |
222 | snd_pcm_hw_rule_func_t func; | |
223 | int var; | |
224 | int deps[4]; | |
225 | void *private; | |
226 | }; | |
227 | ||
877211f5 TI |
228 | struct snd_pcm_hw_constraints { |
229 | struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - | |
1da177e4 | 230 | SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; |
877211f5 | 231 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - |
1da177e4 LT |
232 | SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; |
233 | unsigned int rules_num; | |
234 | unsigned int rules_all; | |
877211f5 TI |
235 | struct snd_pcm_hw_rule *rules; |
236 | }; | |
1da177e4 | 237 | |
877211f5 TI |
238 | static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs, |
239 | snd_pcm_hw_param_t var) | |
1da177e4 LT |
240 | { |
241 | return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; | |
242 | } | |
243 | ||
877211f5 TI |
244 | static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs, |
245 | snd_pcm_hw_param_t var) | |
1da177e4 LT |
246 | { |
247 | return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; | |
248 | } | |
249 | ||
877211f5 | 250 | struct snd_ratnum { |
1da177e4 LT |
251 | unsigned int num; |
252 | unsigned int den_min, den_max, den_step; | |
877211f5 | 253 | }; |
1da177e4 | 254 | |
877211f5 | 255 | struct snd_ratden { |
1da177e4 LT |
256 | unsigned int num_min, num_max, num_step; |
257 | unsigned int den; | |
877211f5 | 258 | }; |
1da177e4 | 259 | |
877211f5 | 260 | struct snd_pcm_hw_constraint_ratnums { |
1da177e4 | 261 | int nrats; |
877211f5 TI |
262 | struct snd_ratnum *rats; |
263 | }; | |
1da177e4 | 264 | |
877211f5 | 265 | struct snd_pcm_hw_constraint_ratdens { |
1da177e4 | 266 | int nrats; |
877211f5 TI |
267 | struct snd_ratden *rats; |
268 | }; | |
1da177e4 | 269 | |
877211f5 | 270 | struct snd_pcm_hw_constraint_list { |
1da177e4 | 271 | unsigned int count; |
4af87a93 | 272 | const unsigned int *list; |
1da177e4 | 273 | unsigned int mask; |
877211f5 | 274 | }; |
1da177e4 | 275 | |
4d96eb25 JK |
276 | struct snd_pcm_hwptr_log; |
277 | ||
877211f5 | 278 | struct snd_pcm_runtime { |
1da177e4 | 279 | /* -- Status -- */ |
877211f5 | 280 | struct snd_pcm_substream *trigger_master; |
07799e75 | 281 | struct timespec trigger_tstamp; /* trigger timestamp */ |
1da177e4 LT |
282 | int overrange; |
283 | snd_pcm_uframes_t avail_max; | |
284 | snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */ | |
e7636925 | 285 | snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */ |
bbf6ad13 | 286 | unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */ |
bd76af0f | 287 | unsigned long hw_ptr_buffer_jiffies; /* buffer time in jiffies */ |
4bbe1ddf | 288 | snd_pcm_sframes_t delay; /* extra delay; typically FIFO size */ |
0e8014d7 | 289 | u64 hw_ptr_wrap; /* offset for hw_ptr due to boundary wrap-around */ |
1da177e4 LT |
290 | |
291 | /* -- HW params -- */ | |
292 | snd_pcm_access_t access; /* access mode */ | |
293 | snd_pcm_format_t format; /* SNDRV_PCM_FORMAT_* */ | |
294 | snd_pcm_subformat_t subformat; /* subformat */ | |
295 | unsigned int rate; /* rate in Hz */ | |
296 | unsigned int channels; /* channels */ | |
297 | snd_pcm_uframes_t period_size; /* period size */ | |
298 | unsigned int periods; /* periods */ | |
299 | snd_pcm_uframes_t buffer_size; /* buffer size */ | |
1da177e4 LT |
300 | snd_pcm_uframes_t min_align; /* Min alignment for the format */ |
301 | size_t byte_align; | |
302 | unsigned int frame_bits; | |
303 | unsigned int sample_bits; | |
304 | unsigned int info; | |
305 | unsigned int rate_num; | |
306 | unsigned int rate_den; | |
ab69a490 | 307 | unsigned int no_period_wakeup: 1; |
1da177e4 LT |
308 | |
309 | /* -- SW params -- */ | |
877211f5 | 310 | int tstamp_mode; /* mmap timestamp is updated */ |
1da177e4 | 311 | unsigned int period_step; |
1da177e4 LT |
312 | snd_pcm_uframes_t start_threshold; |
313 | snd_pcm_uframes_t stop_threshold; | |
314 | snd_pcm_uframes_t silence_threshold; /* Silence filling happens when | |
315 | noise is nearest than this */ | |
316 | snd_pcm_uframes_t silence_size; /* Silence filling size */ | |
317 | snd_pcm_uframes_t boundary; /* pointers wrap point */ | |
318 | ||
319 | snd_pcm_uframes_t silence_start; /* starting pointer to silence area */ | |
320 | snd_pcm_uframes_t silence_filled; /* size filled with silence */ | |
321 | ||
877211f5 | 322 | union snd_pcm_sync_id sync; /* hardware synchronization ID */ |
1da177e4 LT |
323 | |
324 | /* -- mmap -- */ | |
503fc85a TI |
325 | struct snd_pcm_mmap_status *status; |
326 | struct snd_pcm_mmap_control *control; | |
1da177e4 LT |
327 | |
328 | /* -- locking / scheduling -- */ | |
5daeba34 | 329 | snd_pcm_uframes_t twake; /* do transfer (!poll) wakeup if non-zero */ |
c91a988d JK |
330 | wait_queue_head_t sleep; /* poll sleep */ |
331 | wait_queue_head_t tsleep; /* transfer sleep */ | |
1da177e4 LT |
332 | struct fasync_struct *fasync; |
333 | ||
334 | /* -- private section -- */ | |
335 | void *private_data; | |
877211f5 | 336 | void (*private_free)(struct snd_pcm_runtime *runtime); |
1da177e4 LT |
337 | |
338 | /* -- hardware description -- */ | |
877211f5 TI |
339 | struct snd_pcm_hardware hw; |
340 | struct snd_pcm_hw_constraints hw_constraints; | |
1da177e4 LT |
341 | |
342 | /* -- interrupt callbacks -- */ | |
877211f5 TI |
343 | void (*transfer_ack_begin)(struct snd_pcm_substream *substream); |
344 | void (*transfer_ack_end)(struct snd_pcm_substream *substream); | |
1da177e4 LT |
345 | |
346 | /* -- timer -- */ | |
347 | unsigned int timer_resolution; /* timer resolution */ | |
b751eef1 | 348 | int tstamp_type; /* timestamp type */ |
1da177e4 LT |
349 | |
350 | /* -- DMA -- */ | |
351 | unsigned char *dma_area; /* DMA area */ | |
352 | dma_addr_t dma_addr; /* physical bus address (not accessible from main CPU) */ | |
353 | size_t dma_bytes; /* size of DMA area */ | |
354 | ||
355 | struct snd_dma_buffer *dma_buffer_p; /* allocated buffer */ | |
356 | ||
357 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) | |
358 | /* -- OSS things -- */ | |
877211f5 | 359 | struct snd_pcm_oss_runtime oss; |
1da177e4 | 360 | #endif |
4d96eb25 JK |
361 | |
362 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG | |
363 | struct snd_pcm_hwptr_log *hwptr_log; | |
364 | #endif | |
1da177e4 LT |
365 | }; |
366 | ||
877211f5 | 367 | struct snd_pcm_group { /* keep linked substreams */ |
1da177e4 | 368 | spinlock_t lock; |
257f8cce | 369 | struct mutex mutex; |
1da177e4 LT |
370 | struct list_head substreams; |
371 | int count; | |
877211f5 | 372 | }; |
1da177e4 | 373 | |
e7373b70 CL |
374 | struct pid; |
375 | ||
877211f5 TI |
376 | struct snd_pcm_substream { |
377 | struct snd_pcm *pcm; | |
378 | struct snd_pcm_str *pstr; | |
1da177e4 LT |
379 | void *private_data; /* copied from pcm->private_data */ |
380 | int number; | |
381 | char name[32]; /* substream name */ | |
382 | int stream; /* stream (direction) */ | |
cc749986 | 383 | struct pm_qos_request latency_pm_qos_req; /* pm_qos request */ |
1da177e4 LT |
384 | size_t buffer_bytes_max; /* limit ring buffer size */ |
385 | struct snd_dma_buffer dma_buffer; | |
1da177e4 LT |
386 | size_t dma_max; |
387 | /* -- hardware operations -- */ | |
e6c2e7eb | 388 | const struct snd_pcm_ops *ops; |
1da177e4 | 389 | /* -- runtime information -- */ |
877211f5 | 390 | struct snd_pcm_runtime *runtime; |
1da177e4 | 391 | /* -- timer section -- */ |
877211f5 | 392 | struct snd_timer *timer; /* timer */ |
1da177e4 | 393 | unsigned timer_running: 1; /* time is running */ |
1da177e4 | 394 | /* -- next substream -- */ |
877211f5 | 395 | struct snd_pcm_substream *next; |
1da177e4 LT |
396 | /* -- linked substreams -- */ |
397 | struct list_head link_list; /* linked list member */ | |
877211f5 TI |
398 | struct snd_pcm_group self_group; /* fake group for non linked substream (with substream lock inside) */ |
399 | struct snd_pcm_group *group; /* pointer to current group */ | |
1da177e4 | 400 | /* -- assigned files -- */ |
1576274d | 401 | void *file; |
0df63e44 | 402 | int ref_count; |
9c323fcb | 403 | atomic_t mmap_count; |
0df63e44 | 404 | unsigned int f_flags; |
3bf75f9b | 405 | void (*pcm_release)(struct snd_pcm_substream *); |
e7373b70 | 406 | struct pid *pid; |
1da177e4 LT |
407 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
408 | /* -- OSS things -- */ | |
877211f5 | 409 | struct snd_pcm_oss_substream oss; |
1da177e4 | 410 | #endif |
b7d90a35 | 411 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
877211f5 TI |
412 | struct snd_info_entry *proc_root; |
413 | struct snd_info_entry *proc_info_entry; | |
414 | struct snd_info_entry *proc_hw_params_entry; | |
415 | struct snd_info_entry *proc_sw_params_entry; | |
416 | struct snd_info_entry *proc_status_entry; | |
417 | struct snd_info_entry *proc_prealloc_entry; | |
c7132aeb | 418 | struct snd_info_entry *proc_prealloc_max_entry; |
b7d90a35 | 419 | #endif |
1da177e4 | 420 | /* misc flags */ |
3bf75f9b | 421 | unsigned int hw_opened: 1; |
1da177e4 LT |
422 | }; |
423 | ||
0df63e44 | 424 | #define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0) |
1da177e4 LT |
425 | |
426 | ||
877211f5 | 427 | struct snd_pcm_str { |
1da177e4 | 428 | int stream; /* stream (direction) */ |
877211f5 | 429 | struct snd_pcm *pcm; |
1da177e4 LT |
430 | /* -- substreams -- */ |
431 | unsigned int substream_count; | |
432 | unsigned int substream_opened; | |
877211f5 | 433 | struct snd_pcm_substream *substream; |
1da177e4 LT |
434 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
435 | /* -- OSS things -- */ | |
877211f5 | 436 | struct snd_pcm_oss_stream oss; |
1da177e4 | 437 | #endif |
b7d90a35 | 438 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
877211f5 TI |
439 | struct snd_info_entry *proc_root; |
440 | struct snd_info_entry *proc_info_entry; | |
b7d90a35 | 441 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
1da177e4 | 442 | unsigned int xrun_debug; /* 0 = disabled, 1 = verbose, 2 = stacktrace */ |
877211f5 | 443 | struct snd_info_entry *proc_xrun_debug_entry; |
1da177e4 | 444 | #endif |
b7d90a35 | 445 | #endif |
2d3391ec | 446 | struct snd_kcontrol *chmap_kctl; /* channel-mapping controls */ |
1da177e4 LT |
447 | }; |
448 | ||
877211f5 TI |
449 | struct snd_pcm { |
450 | struct snd_card *card; | |
f87135f5 | 451 | struct list_head list; |
f90c06a2 | 452 | int device; /* device number */ |
1da177e4 LT |
453 | unsigned int info_flags; |
454 | unsigned short dev_class; | |
455 | unsigned short dev_subclass; | |
456 | char id[64]; | |
457 | char name[80]; | |
877211f5 | 458 | struct snd_pcm_str streams[2]; |
1a60d4c5 | 459 | struct mutex open_mutex; |
1da177e4 LT |
460 | wait_queue_head_t open_wait; |
461 | void *private_data; | |
877211f5 | 462 | void (*private_free) (struct snd_pcm *pcm); |
c78085fc | 463 | struct device *dev; /* actual hw device this belongs to */ |
945e5038 | 464 | bool internal; /* pcm is for internal use only */ |
257f8cce | 465 | bool nonatomic; /* whole PCM operations are in non-atomic context */ |
1da177e4 | 466 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
877211f5 | 467 | struct snd_pcm_oss oss; |
1da177e4 LT |
468 | #endif |
469 | }; | |
470 | ||
877211f5 TI |
471 | struct snd_pcm_notify { |
472 | int (*n_register) (struct snd_pcm * pcm); | |
473 | int (*n_disconnect) (struct snd_pcm * pcm); | |
474 | int (*n_unregister) (struct snd_pcm * pcm); | |
1da177e4 | 475 | struct list_head list; |
877211f5 | 476 | }; |
1da177e4 LT |
477 | |
478 | /* | |
479 | * Registering | |
480 | */ | |
481 | ||
54047320 | 482 | extern const struct file_operations snd_pcm_f_ops[2]; |
1da177e4 | 483 | |
e6161653 | 484 | int snd_pcm_new(struct snd_card *card, const char *id, int device, |
1da177e4 | 485 | int playback_count, int capture_count, |
877211f5 | 486 | struct snd_pcm **rpcm); |
945e5038 LG |
487 | int snd_pcm_new_internal(struct snd_card *card, const char *id, int device, |
488 | int playback_count, int capture_count, | |
489 | struct snd_pcm **rpcm); | |
877211f5 | 490 | int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count); |
1da177e4 | 491 | |
877211f5 | 492 | int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree); |
1da177e4 LT |
493 | |
494 | /* | |
495 | * Native I/O | |
496 | */ | |
497 | ||
877211f5 TI |
498 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info); |
499 | int snd_pcm_info_user(struct snd_pcm_substream *substream, | |
500 | struct snd_pcm_info __user *info); | |
501 | int snd_pcm_status(struct snd_pcm_substream *substream, | |
502 | struct snd_pcm_status *status); | |
877211f5 | 503 | int snd_pcm_start(struct snd_pcm_substream *substream); |
fea952e5 | 504 | int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t status); |
877211f5 | 505 | int snd_pcm_drain_done(struct snd_pcm_substream *substream); |
1da177e4 | 506 | #ifdef CONFIG_PM |
877211f5 TI |
507 | int snd_pcm_suspend(struct snd_pcm_substream *substream); |
508 | int snd_pcm_suspend_all(struct snd_pcm *pcm); | |
1da177e4 | 509 | #endif |
877211f5 | 510 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); |
3bf75f9b TI |
511 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file, |
512 | struct snd_pcm_substream **rsubstream); | |
877211f5 | 513 | void snd_pcm_release_substream(struct snd_pcm_substream *substream); |
3bf75f9b TI |
514 | int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file, |
515 | struct snd_pcm_substream **rsubstream); | |
516 | void snd_pcm_detach_substream(struct snd_pcm_substream *substream); | |
1da177e4 | 517 | void snd_pcm_vma_notify_data(void *client, void *data); |
877211f5 | 518 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area); |
1da177e4 | 519 | |
acb03d44 EB |
520 | |
521 | #ifdef CONFIG_SND_DEBUG | |
522 | void snd_pcm_debug_name(struct snd_pcm_substream *substream, | |
523 | char *name, size_t len); | |
524 | #else | |
525 | static inline void | |
526 | snd_pcm_debug_name(struct snd_pcm_substream *substream, char *buf, size_t size) | |
527 | { | |
528 | *buf = 0; | |
529 | } | |
530 | #endif | |
531 | ||
1da177e4 LT |
532 | /* |
533 | * PCM library | |
534 | */ | |
535 | ||
877211f5 | 536 | static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream) |
1da177e4 LT |
537 | { |
538 | return substream->group != &substream->self_group; | |
539 | } | |
540 | ||
7af142f7 TI |
541 | void snd_pcm_stream_lock(struct snd_pcm_substream *substream); |
542 | void snd_pcm_stream_unlock(struct snd_pcm_substream *substream); | |
543 | void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream); | |
544 | void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream); | |
545 | unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream); | |
546 | #define snd_pcm_stream_lock_irqsave(substream, flags) \ | |
547 | do { \ | |
548 | typecheck(unsigned long, flags); \ | |
549 | flags = _snd_pcm_stream_lock_irqsave(substream); \ | |
550 | } while (0) | |
551 | void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream, | |
552 | unsigned long flags); | |
1da177e4 | 553 | |
ef991b95 TI |
554 | #define snd_pcm_group_for_each_entry(s, substream) \ |
555 | list_for_each_entry(s, &substream->group->substreams, link_list) | |
1da177e4 | 556 | |
877211f5 | 557 | static inline int snd_pcm_running(struct snd_pcm_substream *substream) |
1da177e4 LT |
558 | { |
559 | return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING || | |
560 | (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING && | |
561 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK)); | |
562 | } | |
563 | ||
877211f5 | 564 | static inline ssize_t bytes_to_samples(struct snd_pcm_runtime *runtime, ssize_t size) |
1da177e4 LT |
565 | { |
566 | return size * 8 / runtime->sample_bits; | |
567 | } | |
568 | ||
877211f5 | 569 | static inline snd_pcm_sframes_t bytes_to_frames(struct snd_pcm_runtime *runtime, ssize_t size) |
1da177e4 LT |
570 | { |
571 | return size * 8 / runtime->frame_bits; | |
572 | } | |
573 | ||
877211f5 | 574 | static inline ssize_t samples_to_bytes(struct snd_pcm_runtime *runtime, ssize_t size) |
1da177e4 LT |
575 | { |
576 | return size * runtime->sample_bits / 8; | |
577 | } | |
578 | ||
877211f5 | 579 | static inline ssize_t frames_to_bytes(struct snd_pcm_runtime *runtime, snd_pcm_sframes_t size) |
1da177e4 LT |
580 | { |
581 | return size * runtime->frame_bits / 8; | |
582 | } | |
583 | ||
877211f5 | 584 | static inline int frame_aligned(struct snd_pcm_runtime *runtime, ssize_t bytes) |
1da177e4 LT |
585 | { |
586 | return bytes % runtime->byte_align == 0; | |
587 | } | |
588 | ||
877211f5 | 589 | static inline size_t snd_pcm_lib_buffer_bytes(struct snd_pcm_substream *substream) |
1da177e4 | 590 | { |
877211f5 | 591 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
592 | return frames_to_bytes(runtime, runtime->buffer_size); |
593 | } | |
594 | ||
877211f5 | 595 | static inline size_t snd_pcm_lib_period_bytes(struct snd_pcm_substream *substream) |
1da177e4 | 596 | { |
877211f5 | 597 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
598 | return frames_to_bytes(runtime, runtime->period_size); |
599 | } | |
600 | ||
601 | /* | |
602 | * result is: 0 ... (boundary - 1) | |
603 | */ | |
877211f5 | 604 | static inline snd_pcm_uframes_t snd_pcm_playback_avail(struct snd_pcm_runtime *runtime) |
1da177e4 LT |
605 | { |
606 | snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr; | |
607 | if (avail < 0) | |
608 | avail += runtime->boundary; | |
609 | else if ((snd_pcm_uframes_t) avail >= runtime->boundary) | |
610 | avail -= runtime->boundary; | |
611 | return avail; | |
612 | } | |
613 | ||
614 | /* | |
615 | * result is: 0 ... (boundary - 1) | |
616 | */ | |
877211f5 | 617 | static inline snd_pcm_uframes_t snd_pcm_capture_avail(struct snd_pcm_runtime *runtime) |
1da177e4 LT |
618 | { |
619 | snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr; | |
620 | if (avail < 0) | |
621 | avail += runtime->boundary; | |
622 | return avail; | |
623 | } | |
624 | ||
877211f5 | 625 | static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(struct snd_pcm_runtime *runtime) |
1da177e4 LT |
626 | { |
627 | return runtime->buffer_size - snd_pcm_playback_avail(runtime); | |
628 | } | |
629 | ||
877211f5 | 630 | static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime *runtime) |
1da177e4 LT |
631 | { |
632 | return runtime->buffer_size - snd_pcm_capture_avail(runtime); | |
633 | } | |
634 | ||
635 | /** | |
636 | * snd_pcm_playback_ready - check whether the playback buffer is available | |
637 | * @substream: the pcm substream instance | |
638 | * | |
639 | * Checks whether enough free space is available on the playback buffer. | |
640 | * | |
eb7c06e8 | 641 | * Return: Non-zero if available, or zero if not. |
1da177e4 | 642 | */ |
877211f5 | 643 | static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) |
1da177e4 | 644 | { |
877211f5 | 645 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
646 | return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min; |
647 | } | |
648 | ||
649 | /** | |
650 | * snd_pcm_capture_ready - check whether the capture buffer is available | |
651 | * @substream: the pcm substream instance | |
652 | * | |
653 | * Checks whether enough capture data is available on the capture buffer. | |
654 | * | |
eb7c06e8 | 655 | * Return: Non-zero if available, or zero if not. |
1da177e4 | 656 | */ |
877211f5 | 657 | static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) |
1da177e4 | 658 | { |
877211f5 | 659 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
660 | return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min; |
661 | } | |
662 | ||
663 | /** | |
664 | * snd_pcm_playback_data - check whether any data exists on the playback buffer | |
665 | * @substream: the pcm substream instance | |
666 | * | |
eb7c06e8 | 667 | * Checks whether any data exists on the playback buffer. |
1da177e4 | 668 | * |
eb7c06e8 YB |
669 | * Return: Non-zero if any data exists, or zero if not. If stop_threshold |
670 | * is bigger or equal to boundary, then this function returns always non-zero. | |
1da177e4 | 671 | */ |
877211f5 | 672 | static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) |
1da177e4 | 673 | { |
877211f5 | 674 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
675 | |
676 | if (runtime->stop_threshold >= runtime->boundary) | |
677 | return 1; | |
678 | return snd_pcm_playback_avail(runtime) < runtime->buffer_size; | |
679 | } | |
680 | ||
681 | /** | |
682 | * snd_pcm_playback_empty - check whether the playback buffer is empty | |
683 | * @substream: the pcm substream instance | |
684 | * | |
685 | * Checks whether the playback buffer is empty. | |
686 | * | |
eb7c06e8 | 687 | * Return: Non-zero if empty, or zero if not. |
1da177e4 | 688 | */ |
877211f5 | 689 | static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) |
1da177e4 | 690 | { |
877211f5 | 691 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
692 | return snd_pcm_playback_avail(runtime) >= runtime->buffer_size; |
693 | } | |
694 | ||
695 | /** | |
696 | * snd_pcm_capture_empty - check whether the capture buffer is empty | |
697 | * @substream: the pcm substream instance | |
698 | * | |
699 | * Checks whether the capture buffer is empty. | |
700 | * | |
eb7c06e8 | 701 | * Return: Non-zero if empty, or zero if not. |
1da177e4 | 702 | */ |
877211f5 | 703 | static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream) |
1da177e4 | 704 | { |
877211f5 | 705 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
706 | return snd_pcm_capture_avail(runtime) == 0; |
707 | } | |
708 | ||
877211f5 TI |
709 | static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream, |
710 | struct snd_pcm_substream *master) | |
1da177e4 LT |
711 | { |
712 | substream->runtime->trigger_master = master; | |
713 | } | |
714 | ||
715 | static inline int hw_is_mask(int var) | |
716 | { | |
717 | return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK && | |
718 | var <= SNDRV_PCM_HW_PARAM_LAST_MASK; | |
719 | } | |
720 | ||
721 | static inline int hw_is_interval(int var) | |
722 | { | |
723 | return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL && | |
724 | var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; | |
725 | } | |
726 | ||
877211f5 | 727 | static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params, |
1da177e4 LT |
728 | snd_pcm_hw_param_t var) |
729 | { | |
730 | return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; | |
731 | } | |
732 | ||
877211f5 | 733 | static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params, |
1da177e4 LT |
734 | snd_pcm_hw_param_t var) |
735 | { | |
736 | return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; | |
737 | } | |
738 | ||
877211f5 | 739 | static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params, |
1da177e4 LT |
740 | snd_pcm_hw_param_t var) |
741 | { | |
b9f09a48 | 742 | return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
1da177e4 LT |
743 | } |
744 | ||
877211f5 | 745 | static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params, |
1da177e4 LT |
746 | snd_pcm_hw_param_t var) |
747 | { | |
b9f09a48 | 748 | return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
1da177e4 LT |
749 | } |
750 | ||
b51beb75 TI |
751 | #define params_channels(p) \ |
752 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min) | |
753 | #define params_rate(p) \ | |
754 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_RATE)->min) | |
755 | #define params_period_size(p) \ | |
756 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min) | |
757 | #define params_periods(p) \ | |
758 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIODS)->min) | |
759 | #define params_buffer_size(p) \ | |
760 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min) | |
761 | #define params_buffer_bytes(p) \ | |
762 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min) | |
1da177e4 | 763 | |
877211f5 TI |
764 | int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v); |
765 | void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); | |
766 | void snd_interval_div(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); | |
767 | void snd_interval_muldivk(const struct snd_interval *a, const struct snd_interval *b, | |
768 | unsigned int k, struct snd_interval *c); | |
769 | void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, | |
770 | const struct snd_interval *b, struct snd_interval *c); | |
4af87a93 MB |
771 | int snd_interval_list(struct snd_interval *i, unsigned int count, |
772 | const unsigned int *list, unsigned int mask); | |
877211f5 TI |
773 | int snd_interval_ratnum(struct snd_interval *i, |
774 | unsigned int rats_count, struct snd_ratnum *rats, | |
1da177e4 LT |
775 | unsigned int *nump, unsigned int *denp); |
776 | ||
877211f5 TI |
777 | void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params); |
778 | void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var); | |
877211f5 | 779 | int snd_pcm_hw_params_choose(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); |
1da177e4 | 780 | |
877211f5 | 781 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); |
1da177e4 | 782 | |
877211f5 TI |
783 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream); |
784 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream); | |
1da177e4 | 785 | |
877211f5 | 786 | int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
1da177e4 | 787 | u_int32_t mask); |
877211f5 | 788 | int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
1da177e4 | 789 | u_int64_t mask); |
877211f5 | 790 | int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
1da177e4 | 791 | unsigned int min, unsigned int max); |
877211f5 TI |
792 | int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var); |
793 | int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
794 | unsigned int cond, |
795 | snd_pcm_hw_param_t var, | |
1464189f | 796 | const struct snd_pcm_hw_constraint_list *l); |
877211f5 | 797 | int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime, |
1da177e4 LT |
798 | unsigned int cond, |
799 | snd_pcm_hw_param_t var, | |
877211f5 TI |
800 | struct snd_pcm_hw_constraint_ratnums *r); |
801 | int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
802 | unsigned int cond, |
803 | snd_pcm_hw_param_t var, | |
877211f5 TI |
804 | struct snd_pcm_hw_constraint_ratdens *r); |
805 | int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime, | |
1da177e4 LT |
806 | unsigned int cond, |
807 | unsigned int width, | |
808 | unsigned int msbits); | |
877211f5 | 809 | int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime, |
1da177e4 LT |
810 | unsigned int cond, |
811 | snd_pcm_hw_param_t var, | |
812 | unsigned long step); | |
877211f5 | 813 | int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime, |
1da177e4 LT |
814 | unsigned int cond, |
815 | snd_pcm_hw_param_t var); | |
d5b702a6 CL |
816 | int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime, |
817 | unsigned int base_rate); | |
877211f5 | 818 | int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, |
1da177e4 LT |
819 | unsigned int cond, |
820 | int var, | |
821 | snd_pcm_hw_rule_func_t func, void *private, | |
822 | int dep, ...); | |
823 | ||
824 | int snd_pcm_format_signed(snd_pcm_format_t format); | |
825 | int snd_pcm_format_unsigned(snd_pcm_format_t format); | |
826 | int snd_pcm_format_linear(snd_pcm_format_t format); | |
827 | int snd_pcm_format_little_endian(snd_pcm_format_t format); | |
828 | int snd_pcm_format_big_endian(snd_pcm_format_t format); | |
1b44c28d TI |
829 | #if 0 /* just for DocBook */ |
830 | /** | |
9502dcad TI |
831 | * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian |
832 | * @format: the format to check | |
833 | * | |
eb7c06e8 | 834 | * Return: 1 if the given PCM format is CPU-endian, 0 if |
9502dcad TI |
835 | * opposite, or a negative error code if endian not specified. |
836 | */ | |
8cdfd251 | 837 | int snd_pcm_format_cpu_endian(snd_pcm_format_t format); |
1b44c28d | 838 | #endif /* DocBook */ |
9502dcad | 839 | #ifdef SNDRV_LITTLE_ENDIAN |
9d01a82e | 840 | #define snd_pcm_format_cpu_endian(format) snd_pcm_format_little_endian(format) |
9502dcad | 841 | #else |
9d01a82e | 842 | #define snd_pcm_format_cpu_endian(format) snd_pcm_format_big_endian(format) |
9502dcad | 843 | #endif |
1da177e4 LT |
844 | int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ |
845 | int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ | |
9502dcad | 846 | ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples); |
1da177e4 LT |
847 | const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format); |
848 | int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames); | |
b23f7a09 | 849 | snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsigned, int big_endian); |
1da177e4 | 850 | |
e6c2e7eb LPC |
851 | void snd_pcm_set_ops(struct snd_pcm * pcm, int direction, |
852 | const struct snd_pcm_ops *ops); | |
877211f5 TI |
853 | void snd_pcm_set_sync(struct snd_pcm_substream *substream); |
854 | int snd_pcm_lib_interleave_len(struct snd_pcm_substream *substream); | |
855 | int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, | |
1da177e4 | 856 | unsigned int cmd, void *arg); |
1250932e JK |
857 | int snd_pcm_update_state(struct snd_pcm_substream *substream, |
858 | struct snd_pcm_runtime *runtime); | |
877211f5 TI |
859 | int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); |
860 | int snd_pcm_playback_xrun_check(struct snd_pcm_substream *substream); | |
861 | int snd_pcm_capture_xrun_check(struct snd_pcm_substream *substream); | |
862 | int snd_pcm_playback_xrun_asap(struct snd_pcm_substream *substream); | |
863 | int snd_pcm_capture_xrun_asap(struct snd_pcm_substream *substream); | |
864 | void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr); | |
877211f5 TI |
865 | void snd_pcm_period_elapsed(struct snd_pcm_substream *substream); |
866 | snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, | |
1da177e4 LT |
867 | const void __user *buf, |
868 | snd_pcm_uframes_t frames); | |
877211f5 | 869 | snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, |
1da177e4 | 870 | void __user *buf, snd_pcm_uframes_t frames); |
877211f5 | 871 | snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream, |
1da177e4 | 872 | void __user **bufs, snd_pcm_uframes_t frames); |
877211f5 | 873 | snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream, |
1da177e4 LT |
874 | void __user **bufs, snd_pcm_uframes_t frames); |
875 | ||
7653d557 CL |
876 | extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates; |
877 | ||
877211f5 | 878 | int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime); |
918f3a0e | 879 | unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate); |
4be77a53 | 880 | unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit); |
e3a9269f LPC |
881 | unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a, |
882 | unsigned int rates_b); | |
1da177e4 | 883 | |
877211f5 | 884 | static inline void snd_pcm_set_runtime_buffer(struct snd_pcm_substream *substream, |
1da177e4 LT |
885 | struct snd_dma_buffer *bufp) |
886 | { | |
877211f5 | 887 | struct snd_pcm_runtime *runtime = substream->runtime; |
1da177e4 LT |
888 | if (bufp) { |
889 | runtime->dma_buffer_p = bufp; | |
890 | runtime->dma_area = bufp->area; | |
891 | runtime->dma_addr = bufp->addr; | |
892 | runtime->dma_bytes = bufp->bytes; | |
893 | } else { | |
894 | runtime->dma_buffer_p = NULL; | |
895 | runtime->dma_area = NULL; | |
896 | runtime->dma_addr = 0; | |
897 | runtime->dma_bytes = 0; | |
898 | } | |
899 | } | |
900 | ||
901 | /* | |
902 | * Timer interface | |
903 | */ | |
904 | ||
877211f5 TI |
905 | void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); |
906 | void snd_pcm_timer_init(struct snd_pcm_substream *substream); | |
907 | void snd_pcm_timer_done(struct snd_pcm_substream *substream); | |
1da177e4 | 908 | |
b751eef1 JK |
909 | static inline void snd_pcm_gettime(struct snd_pcm_runtime *runtime, |
910 | struct timespec *tv) | |
911 | { | |
0ac8a52d MB |
912 | switch (runtime->tstamp_type) { |
913 | case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC: | |
26204e04 | 914 | ktime_get_ts(tv); |
0ac8a52d MB |
915 | break; |
916 | case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW: | |
917 | getrawmonotonic(tv); | |
918 | break; | |
919 | default: | |
b751eef1 | 920 | getnstimeofday(tv); |
0ac8a52d MB |
921 | break; |
922 | } | |
b751eef1 JK |
923 | } |
924 | ||
1da177e4 LT |
925 | /* |
926 | * Memory | |
927 | */ | |
928 | ||
877211f5 TI |
929 | int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream); |
930 | int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm); | |
931 | int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream, | |
1da177e4 LT |
932 | int type, struct device *data, |
933 | size_t size, size_t max); | |
877211f5 | 934 | int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, |
1da177e4 LT |
935 | int type, void *data, |
936 | size_t size, size_t max); | |
877211f5 TI |
937 | int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size); |
938 | int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream); | |
1da177e4 | 939 | |
681b84e1 CL |
940 | int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream, |
941 | size_t size, gfp_t gfp_flags); | |
942 | int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream); | |
943 | struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream, | |
944 | unsigned long offset); | |
945 | #if 0 /* for kernel-doc */ | |
946 | /** | |
947 | * snd_pcm_lib_alloc_vmalloc_buffer - allocate virtual DMA buffer | |
948 | * @substream: the substream to allocate the buffer to | |
949 | * @size: the requested buffer size, in bytes | |
950 | * | |
951 | * Allocates the PCM substream buffer using vmalloc(), i.e., the memory is | |
952 | * contiguous in kernel virtual space, but not in physical memory. Use this | |
953 | * if the buffer is accessed by kernel code but not by device DMA. | |
954 | * | |
eb7c06e8 | 955 | * Return: 1 if the buffer was changed, 0 if not changed, or a negative error |
681b84e1 CL |
956 | * code. |
957 | */ | |
958 | static int snd_pcm_lib_alloc_vmalloc_buffer | |
959 | (struct snd_pcm_substream *substream, size_t size); | |
960 | /** | |
961 | * snd_pcm_lib_alloc_vmalloc_32_buffer - allocate 32-bit-addressable buffer | |
962 | * @substream: the substream to allocate the buffer to | |
963 | * @size: the requested buffer size, in bytes | |
964 | * | |
965 | * This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses | |
966 | * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory. | |
eb7c06e8 YB |
967 | * |
968 | * Return: 1 if the buffer was changed, 0 if not changed, or a negative error | |
969 | * code. | |
681b84e1 CL |
970 | */ |
971 | static int snd_pcm_lib_alloc_vmalloc_32_buffer | |
972 | (struct snd_pcm_substream *substream, size_t size); | |
973 | #endif | |
974 | #define snd_pcm_lib_alloc_vmalloc_buffer(subs, size) \ | |
975 | _snd_pcm_lib_alloc_vmalloc_buffer \ | |
976 | (subs, size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO) | |
977 | #define snd_pcm_lib_alloc_vmalloc_32_buffer(subs, size) \ | |
978 | _snd_pcm_lib_alloc_vmalloc_buffer \ | |
979 | (subs, size, GFP_KERNEL | GFP_DMA32 | __GFP_ZERO) | |
980 | ||
9d069dc0 TI |
981 | #define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p) |
982 | ||
cc6a8acd | 983 | #ifdef CONFIG_SND_DMA_SGBUF |
77a23f26 TI |
984 | /* |
985 | * SG-buffer handling | |
986 | */ | |
987 | #define snd_pcm_substream_sgbuf(substream) \ | |
9d069dc0 | 988 | snd_pcm_get_dma_buf(substream)->private_data |
77a23f26 TI |
989 | |
990 | struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, | |
991 | unsigned long offset); | |
cc6a8acd TI |
992 | #else /* !SND_DMA_SGBUF */ |
993 | /* | |
994 | * fake using a continuous buffer | |
995 | */ | |
9d069dc0 TI |
996 | #define snd_pcm_sgbuf_ops_page NULL |
997 | #endif /* SND_DMA_SGBUF */ | |
998 | ||
cc6a8acd TI |
999 | static inline dma_addr_t |
1000 | snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs) | |
1001 | { | |
9d069dc0 | 1002 | return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs); |
cc6a8acd TI |
1003 | } |
1004 | ||
1005 | static inline void * | |
1006 | snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs) | |
1007 | { | |
9d069dc0 | 1008 | return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs); |
cc6a8acd TI |
1009 | } |
1010 | ||
9d069dc0 TI |
1011 | static inline unsigned int |
1012 | snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream, | |
1013 | unsigned int ofs, unsigned int size) | |
1014 | { | |
1015 | return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size); | |
1016 | } | |
cc6a8acd | 1017 | |
1da177e4 LT |
1018 | /* handle mmap counter - PCM mmap callback should handle this counter properly */ |
1019 | static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area) | |
1020 | { | |
877211f5 | 1021 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
9c323fcb | 1022 | atomic_inc(&substream->mmap_count); |
1da177e4 LT |
1023 | } |
1024 | ||
1025 | static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area) | |
1026 | { | |
877211f5 | 1027 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
9c323fcb | 1028 | atomic_dec(&substream->mmap_count); |
1da177e4 LT |
1029 | } |
1030 | ||
18a2b962 TI |
1031 | int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream, |
1032 | struct vm_area_struct *area); | |
1da177e4 LT |
1033 | /* mmap for io-memory area */ |
1034 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) | |
1035 | #define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP | |
877211f5 | 1036 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_struct *area); |
1da177e4 LT |
1037 | #else |
1038 | #define SNDRV_PCM_INFO_MMAP_IOMEM 0 | |
1039 | #define snd_pcm_lib_mmap_iomem NULL | |
1040 | #endif | |
1041 | ||
3674f19d | 1042 | #define snd_pcm_lib_mmap_vmalloc NULL |
c32d977b | 1043 | |
1da177e4 LT |
1044 | static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) |
1045 | { | |
1046 | *max = dma < 4 ? 64 * 1024 : 128 * 1024; | |
1047 | } | |
1048 | ||
1049 | /* | |
1050 | * Misc | |
1051 | */ | |
1052 | ||
1053 | #define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\ | |
1054 | (IEC958_AES1_CON_ORIGINAL<<8)|\ | |
1055 | (IEC958_AES1_CON_PCM_CODER<<8)|\ | |
1056 | (IEC958_AES3_CON_FS_48000<<24)) | |
1057 | ||
7eaa943c TI |
1058 | #define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime) |
1059 | ||
6e5265ec TI |
1060 | const char *snd_pcm_format_name(snd_pcm_format_t format); |
1061 | ||
1aad779f | 1062 | /** |
8513915a RD |
1063 | * snd_pcm_stream_str - Get a string naming the direction of a stream |
1064 | * @substream: the pcm substream instance | |
eb7c06e8 YB |
1065 | * |
1066 | * Return: A string naming the direction of the stream. | |
1aad779f OL |
1067 | */ |
1068 | static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream) | |
1069 | { | |
1070 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) | |
1071 | return "Playback"; | |
1072 | else | |
1073 | return "Capture"; | |
1074 | } | |
1075 | ||
2d3391ec TI |
1076 | /* |
1077 | * PCM channel-mapping control API | |
1078 | */ | |
1079 | /* array element of channel maps */ | |
1080 | struct snd_pcm_chmap_elem { | |
1081 | unsigned char channels; | |
1082 | unsigned char map[15]; | |
1083 | }; | |
1084 | ||
1085 | /* channel map information; retrieved via snd_kcontrol_chip() */ | |
1086 | struct snd_pcm_chmap { | |
1087 | struct snd_pcm *pcm; /* assigned PCM instance */ | |
1088 | int stream; /* PLAYBACK or CAPTURE */ | |
1089 | struct snd_kcontrol *kctl; | |
1090 | const struct snd_pcm_chmap_elem *chmap; | |
1091 | unsigned int max_channels; | |
1092 | unsigned int channel_mask; /* optional: active channels bitmask */ | |
1093 | void *private_data; /* optional: private data pointer */ | |
1094 | }; | |
1095 | ||
1096 | /* get the PCM substream assigned to the given chmap info */ | |
1097 | static inline struct snd_pcm_substream * | |
1098 | snd_pcm_chmap_substream(struct snd_pcm_chmap *info, unsigned int idx) | |
1099 | { | |
1100 | struct snd_pcm_substream *s; | |
1101 | for (s = info->pcm->streams[info->stream].substream; s; s = s->next) | |
1102 | if (s->number == idx) | |
1103 | return s; | |
1104 | return NULL; | |
1105 | } | |
1106 | ||
1107 | /* ALSA-standard channel maps (RL/RR prior to C/LFE) */ | |
1108 | extern const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[]; | |
1109 | /* Other world's standard channel maps (C/LFE prior to RL/RR) */ | |
1110 | extern const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[]; | |
1111 | ||
1112 | /* bit masks to be passed to snd_pcm_chmap.channel_mask field */ | |
1113 | #define SND_PCM_CHMAP_MASK_24 ((1U << 2) | (1U << 4)) | |
1114 | #define SND_PCM_CHMAP_MASK_246 (SND_PCM_CHMAP_MASK_24 | (1U << 6)) | |
1115 | #define SND_PCM_CHMAP_MASK_2468 (SND_PCM_CHMAP_MASK_246 | (1U << 8)) | |
1116 | ||
1117 | int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream, | |
1118 | const struct snd_pcm_chmap_elem *chmap, | |
1119 | int max_channels, | |
1120 | unsigned long private_value, | |
1121 | struct snd_pcm_chmap **info_ret); | |
1122 | ||
74c34ca1 EZ |
1123 | /* Strong-typed conversion of pcm_format to bitwise */ |
1124 | static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format) | |
1125 | { | |
1126 | return 1ULL << (__force int) pcm_format; | |
1127 | } | |
1128 | ||
09e56df8 TI |
1129 | /* printk helpers */ |
1130 | #define pcm_err(pcm, fmt, args...) \ | |
1131 | dev_err((pcm)->card->dev, fmt, ##args) | |
1132 | #define pcm_warn(pcm, fmt, args...) \ | |
1133 | dev_warn((pcm)->card->dev, fmt, ##args) | |
1134 | #define pcm_dbg(pcm, fmt, args...) \ | |
1135 | dev_dbg((pcm)->card->dev, fmt, ##args) | |
1136 | ||
1da177e4 | 1137 | #endif /* __SOUND_PCM_H */ |