Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __SOUND_PCM_H |
| 2 | #define __SOUND_PCM_H |
| 3 | |
| 4 | /* |
| 5 | * Digital Audio (PCM) abstract layer |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 6 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 28 | #include <sound/minors.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/poll.h> |
Al Viro | f23f6e0 | 2006-10-20 15:17:02 -0400 | [diff] [blame] | 30 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/bitops.h> |
Jean Pihet | e8db0be | 2011-08-25 15:35:03 +0200 | [diff] [blame] | 32 | #include <linux/pm_qos.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #define snd_pcm_substream_chip(substream) ((substream)->private_data) |
| 35 | #define snd_pcm_chip(pcm) ((pcm)->private_data) |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
David Howells | a1ce392 | 2012-10-02 18:01:25 +0100 | [diff] [blame] | 38 | #include <sound/pcm_oss.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #endif |
| 40 | |
| 41 | /* |
| 42 | * Hardware (lowlevel) section |
| 43 | */ |
| 44 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 45 | struct snd_pcm_hardware { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 59 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Randy Dunlap | e0e6ce0 | 2006-12-07 08:22:50 +0100 | [diff] [blame] | 61 | struct snd_pcm_substream; |
| 62 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 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, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | unsigned int cmd, void *arg); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 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); |
Pierre-Louis Bossart | 4eeaaea | 2012-10-22 16:42:15 -0500 | [diff] [blame] | 74 | int (*wall_clock)(struct snd_pcm_substream *substream, |
| 75 | struct timespec *audio_ts); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 76 | int (*copy)(struct snd_pcm_substream *substream, int channel, |
| 77 | snd_pcm_uframes_t pos, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | void __user *buf, snd_pcm_uframes_t count); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 79 | int (*silence)(struct snd_pcm_substream *substream, int channel, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | snd_pcm_uframes_t pos, snd_pcm_uframes_t count); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 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 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | /* |
| 88 | * |
| 89 | */ |
| 90 | |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 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 |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Jaroslav Kysela | 8bea869 | 2009-04-27 09:44:40 +0200 | [diff] [blame] | 104 | #define SNDRV_PCM_IOCTL1_FIFO_SIZE 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 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) |
Daniel Mack | ef7a4f9 | 2013-04-17 00:01:36 +0800 | [diff] [blame] | 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) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | |
| 187 | #ifdef SNDRV_LITTLE_ENDIAN |
| 188 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE |
| 189 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE |
| 190 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE |
| 191 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE |
| 192 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE |
| 193 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE |
| 194 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE |
| 195 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE |
| 196 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE |
| 197 | #endif |
| 198 | #ifdef SNDRV_BIG_ENDIAN |
| 199 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_BE |
| 200 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_BE |
| 201 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_BE |
| 202 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_BE |
| 203 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_BE |
| 204 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_BE |
| 205 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_BE |
| 206 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_BE |
| 207 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE |
| 208 | #endif |
| 209 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 210 | struct snd_pcm_file { |
| 211 | struct snd_pcm_substream *substream; |
Takashi Iwai | 548a648 | 2006-07-31 16:51:51 +0200 | [diff] [blame] | 212 | int no_compat_mmap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 213 | }; |
| 214 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 215 | struct snd_pcm_hw_rule; |
| 216 | typedef int (*snd_pcm_hw_rule_func_t)(struct snd_pcm_hw_params *params, |
| 217 | struct snd_pcm_hw_rule *rule); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 219 | struct snd_pcm_hw_rule { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | unsigned int cond; |
| 221 | snd_pcm_hw_rule_func_t func; |
| 222 | int var; |
| 223 | int deps[4]; |
| 224 | void *private; |
| 225 | }; |
| 226 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 227 | struct snd_pcm_hw_constraints { |
| 228 | struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 230 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; |
| 232 | unsigned int rules_num; |
| 233 | unsigned int rules_all; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 234 | struct snd_pcm_hw_rule *rules; |
| 235 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 237 | static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs, |
| 238 | snd_pcm_hw_param_t var) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | { |
| 240 | return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
| 241 | } |
| 242 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 243 | static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs, |
| 244 | snd_pcm_hw_param_t var) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
| 246 | return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
| 247 | } |
| 248 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 249 | struct snd_ratnum { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | unsigned int num; |
| 251 | unsigned int den_min, den_max, den_step; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 252 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 254 | struct snd_ratden { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | unsigned int num_min, num_max, num_step; |
| 256 | unsigned int den; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 257 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 259 | struct snd_pcm_hw_constraint_ratnums { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | int nrats; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 261 | struct snd_ratnum *rats; |
| 262 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 263 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 264 | struct snd_pcm_hw_constraint_ratdens { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | int nrats; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 266 | struct snd_ratden *rats; |
| 267 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 269 | struct snd_pcm_hw_constraint_list { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 270 | unsigned int count; |
Mark Brown | 4af87a9 | 2012-03-14 19:48:43 +0000 | [diff] [blame] | 271 | const unsigned int *list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | unsigned int mask; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 273 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | |
Jaroslav Kysela | 4d96eb2 | 2009-12-20 11:47:57 +0100 | [diff] [blame] | 275 | struct snd_pcm_hwptr_log; |
| 276 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 277 | struct snd_pcm_runtime { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 278 | /* -- Status -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 279 | struct snd_pcm_substream *trigger_master; |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 280 | struct timespec trigger_tstamp; /* trigger timestamp */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 281 | int overrange; |
| 282 | snd_pcm_uframes_t avail_max; |
| 283 | snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */ |
Jaroslav Kysela | e763692 | 2010-01-26 17:08:24 +0100 | [diff] [blame] | 284 | snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */ |
Jaroslav Kysela | bbf6ad1 | 2009-04-10 12:28:58 +0200 | [diff] [blame] | 285 | unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */ |
Jaroslav Kysela | bd76af0 | 2010-08-18 14:16:54 +0200 | [diff] [blame] | 286 | unsigned long hw_ptr_buffer_jiffies; /* buffer time in jiffies */ |
Takashi Iwai | 4bbe1dd | 2008-10-13 03:07:14 +0200 | [diff] [blame] | 287 | snd_pcm_sframes_t delay; /* extra delay; typically FIFO size */ |
Pierre-Louis Bossart | 0e8014d | 2012-10-22 16:42:14 -0500 | [diff] [blame] | 288 | u64 hw_ptr_wrap; /* offset for hw_ptr due to boundary wrap-around */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | |
| 290 | /* -- HW params -- */ |
| 291 | snd_pcm_access_t access; /* access mode */ |
| 292 | snd_pcm_format_t format; /* SNDRV_PCM_FORMAT_* */ |
| 293 | snd_pcm_subformat_t subformat; /* subformat */ |
| 294 | unsigned int rate; /* rate in Hz */ |
| 295 | unsigned int channels; /* channels */ |
| 296 | snd_pcm_uframes_t period_size; /* period size */ |
| 297 | unsigned int periods; /* periods */ |
| 298 | snd_pcm_uframes_t buffer_size; /* buffer size */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | snd_pcm_uframes_t min_align; /* Min alignment for the format */ |
| 300 | size_t byte_align; |
| 301 | unsigned int frame_bits; |
| 302 | unsigned int sample_bits; |
| 303 | unsigned int info; |
| 304 | unsigned int rate_num; |
| 305 | unsigned int rate_den; |
Clemens Ladisch | ab69a49 | 2010-11-15 10:46:23 +0100 | [diff] [blame] | 306 | unsigned int no_period_wakeup: 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | |
| 308 | /* -- SW params -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 309 | int tstamp_mode; /* mmap timestamp is updated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 310 | unsigned int period_step; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | snd_pcm_uframes_t start_threshold; |
| 312 | snd_pcm_uframes_t stop_threshold; |
| 313 | snd_pcm_uframes_t silence_threshold; /* Silence filling happens when |
| 314 | noise is nearest than this */ |
| 315 | snd_pcm_uframes_t silence_size; /* Silence filling size */ |
| 316 | snd_pcm_uframes_t boundary; /* pointers wrap point */ |
| 317 | |
| 318 | snd_pcm_uframes_t silence_start; /* starting pointer to silence area */ |
| 319 | snd_pcm_uframes_t silence_filled; /* size filled with silence */ |
| 320 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 321 | union snd_pcm_sync_id sync; /* hardware synchronization ID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | |
| 323 | /* -- mmap -- */ |
Takashi Iwai | 503fc85 | 2007-09-11 00:35:06 +0200 | [diff] [blame] | 324 | struct snd_pcm_mmap_status *status; |
| 325 | struct snd_pcm_mmap_control *control; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
| 327 | /* -- locking / scheduling -- */ |
David Dillow | 5daeba3 | 2010-06-27 00:13:20 +0200 | [diff] [blame] | 328 | snd_pcm_uframes_t twake; /* do transfer (!poll) wakeup if non-zero */ |
Jaroslav Kysela | c91a988 | 2010-01-21 10:32:15 +0100 | [diff] [blame] | 329 | wait_queue_head_t sleep; /* poll sleep */ |
| 330 | wait_queue_head_t tsleep; /* transfer sleep */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | struct fasync_struct *fasync; |
| 332 | |
| 333 | /* -- private section -- */ |
| 334 | void *private_data; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 335 | void (*private_free)(struct snd_pcm_runtime *runtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
| 337 | /* -- hardware description -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 338 | struct snd_pcm_hardware hw; |
| 339 | struct snd_pcm_hw_constraints hw_constraints; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 340 | |
| 341 | /* -- interrupt callbacks -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 342 | void (*transfer_ack_begin)(struct snd_pcm_substream *substream); |
| 343 | void (*transfer_ack_end)(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
| 345 | /* -- timer -- */ |
| 346 | unsigned int timer_resolution; /* timer resolution */ |
Jaroslav Kysela | b751eef | 2007-12-13 10:19:42 +0100 | [diff] [blame] | 347 | int tstamp_type; /* timestamp type */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
| 349 | /* -- DMA -- */ |
| 350 | unsigned char *dma_area; /* DMA area */ |
| 351 | dma_addr_t dma_addr; /* physical bus address (not accessible from main CPU) */ |
| 352 | size_t dma_bytes; /* size of DMA area */ |
| 353 | |
| 354 | struct snd_dma_buffer *dma_buffer_p; /* allocated buffer */ |
| 355 | |
| 356 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 357 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 358 | struct snd_pcm_oss_runtime oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | #endif |
Jaroslav Kysela | 4d96eb2 | 2009-12-20 11:47:57 +0100 | [diff] [blame] | 360 | |
| 361 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
| 362 | struct snd_pcm_hwptr_log *hwptr_log; |
| 363 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 364 | }; |
| 365 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 366 | struct snd_pcm_group { /* keep linked substreams */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | spinlock_t lock; |
| 368 | struct list_head substreams; |
| 369 | int count; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 370 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | |
Clemens Ladisch | e7373b7 | 2009-11-10 10:13:30 +0100 | [diff] [blame] | 372 | struct pid; |
| 373 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 374 | struct snd_pcm_substream { |
| 375 | struct snd_pcm *pcm; |
| 376 | struct snd_pcm_str *pstr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | void *private_data; /* copied from pcm->private_data */ |
| 378 | int number; |
| 379 | char name[32]; /* substream name */ |
| 380 | int stream; /* stream (direction) */ |
Jean Pihet | cc74998 | 2011-08-25 15:35:12 +0200 | [diff] [blame] | 381 | struct pm_qos_request latency_pm_qos_req; /* pm_qos request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | size_t buffer_bytes_max; /* limit ring buffer size */ |
| 383 | struct snd_dma_buffer dma_buffer; |
| 384 | unsigned int dma_buf_id; |
| 385 | size_t dma_max; |
| 386 | /* -- hardware operations -- */ |
Lars-Peter Clausen | e6c2e7e | 2013-05-24 15:18:10 +0200 | [diff] [blame] | 387 | const struct snd_pcm_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | /* -- runtime information -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 389 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | /* -- timer section -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 391 | struct snd_timer *timer; /* timer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | unsigned timer_running: 1; /* time is running */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | /* -- next substream -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 394 | struct snd_pcm_substream *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | /* -- linked substreams -- */ |
| 396 | struct list_head link_list; /* linked list member */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 397 | struct snd_pcm_group self_group; /* fake group for non linked substream (with substream lock inside) */ |
| 398 | struct snd_pcm_group *group; /* pointer to current group */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 399 | /* -- assigned files -- */ |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 400 | void *file; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 401 | int ref_count; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 402 | atomic_t mmap_count; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 403 | unsigned int f_flags; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 404 | void (*pcm_release)(struct snd_pcm_substream *); |
Clemens Ladisch | e7373b7 | 2009-11-10 10:13:30 +0100 | [diff] [blame] | 405 | struct pid *pid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 407 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 408 | struct snd_pcm_oss_substream oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | #endif |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 410 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 411 | struct snd_info_entry *proc_root; |
| 412 | struct snd_info_entry *proc_info_entry; |
| 413 | struct snd_info_entry *proc_hw_params_entry; |
| 414 | struct snd_info_entry *proc_sw_params_entry; |
| 415 | struct snd_info_entry *proc_status_entry; |
| 416 | struct snd_info_entry *proc_prealloc_entry; |
Jaroslav Kysela | c7132ae | 2006-10-06 15:12:29 +0200 | [diff] [blame] | 417 | struct snd_info_entry *proc_prealloc_max_entry; |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 418 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | /* misc flags */ |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 420 | unsigned int hw_opened: 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | }; |
| 422 | |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 423 | #define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
| 425 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 426 | struct snd_pcm_str { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | int stream; /* stream (direction) */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 428 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | /* -- substreams -- */ |
| 430 | unsigned int substream_count; |
| 431 | unsigned int substream_opened; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 432 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 434 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 435 | struct snd_pcm_oss_stream oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | #endif |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 437 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 438 | struct snd_info_entry *proc_root; |
| 439 | struct snd_info_entry *proc_info_entry; |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 440 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | unsigned int xrun_debug; /* 0 = disabled, 1 = verbose, 2 = stacktrace */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 442 | struct snd_info_entry *proc_xrun_debug_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | #endif |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 444 | #endif |
Takashi Iwai | 2d3391e | 2012-07-27 18:27:00 +0200 | [diff] [blame] | 445 | struct snd_kcontrol *chmap_kctl; /* channel-mapping controls */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | }; |
| 447 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 448 | struct snd_pcm { |
| 449 | struct snd_card *card; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 450 | struct list_head list; |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 451 | int device; /* device number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | unsigned int info_flags; |
| 453 | unsigned short dev_class; |
| 454 | unsigned short dev_subclass; |
| 455 | char id[64]; |
| 456 | char name[80]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 457 | struct snd_pcm_str streams[2]; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 458 | struct mutex open_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | wait_queue_head_t open_wait; |
| 460 | void *private_data; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 461 | void (*private_free) (struct snd_pcm *pcm); |
Johannes Berg | c78085f | 2006-10-05 15:06:34 +0200 | [diff] [blame] | 462 | struct device *dev; /* actual hw device this belongs to */ |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 463 | bool internal; /* pcm is for internal use only */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 465 | struct snd_pcm_oss oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | #endif |
| 467 | }; |
| 468 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 469 | struct snd_pcm_notify { |
| 470 | int (*n_register) (struct snd_pcm * pcm); |
| 471 | int (*n_disconnect) (struct snd_pcm * pcm); |
| 472 | int (*n_unregister) (struct snd_pcm * pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 473 | struct list_head list; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 474 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | |
| 476 | /* |
| 477 | * Registering |
| 478 | */ |
| 479 | |
Arjan van de Ven | 5404732 | 2007-02-12 00:55:28 -0800 | [diff] [blame] | 480 | extern const struct file_operations snd_pcm_f_ops[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | |
Tim Blechmann | e616165 | 2009-02-05 13:01:54 +0100 | [diff] [blame] | 482 | int snd_pcm_new(struct snd_card *card, const char *id, int device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | int playback_count, int capture_count, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 484 | struct snd_pcm **rpcm); |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 485 | int snd_pcm_new_internal(struct snd_card *card, const char *id, int device, |
| 486 | int playback_count, int capture_count, |
| 487 | struct snd_pcm **rpcm); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 488 | int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 489 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 490 | int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | |
| 492 | /* |
| 493 | * Native I/O |
| 494 | */ |
| 495 | |
| 496 | extern rwlock_t snd_pcm_link_rwlock; |
| 497 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 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); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 503 | int snd_pcm_start(struct snd_pcm_substream *substream); |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 504 | int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t status); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 505 | int snd_pcm_drain_done(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 506 | #ifdef CONFIG_PM |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 507 | int snd_pcm_suspend(struct snd_pcm_substream *substream); |
| 508 | int snd_pcm_suspend_all(struct snd_pcm *pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | #endif |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 510 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 511 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file, |
| 512 | struct snd_pcm_substream **rsubstream); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 513 | void snd_pcm_release_substream(struct snd_pcm_substream *substream); |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 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); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | void snd_pcm_vma_notify_data(void *client, void *data); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 518 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | |
Eliot Blennerhassett | acb03d4 | 2011-07-23 12:36:25 +1200 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | /* |
| 533 | * PCM library |
| 534 | */ |
| 535 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 536 | static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 537 | { |
| 538 | return substream->group != &substream->self_group; |
| 539 | } |
| 540 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 541 | static inline void snd_pcm_stream_lock(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | { |
| 543 | read_lock(&snd_pcm_link_rwlock); |
| 544 | spin_lock(&substream->self_group.lock); |
| 545 | } |
| 546 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 547 | static inline void snd_pcm_stream_unlock(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | { |
| 549 | spin_unlock(&substream->self_group.lock); |
| 550 | read_unlock(&snd_pcm_link_rwlock); |
| 551 | } |
| 552 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 553 | static inline void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | { |
| 555 | read_lock_irq(&snd_pcm_link_rwlock); |
| 556 | spin_lock(&substream->self_group.lock); |
| 557 | } |
| 558 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 559 | static inline void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | { |
| 561 | spin_unlock(&substream->self_group.lock); |
| 562 | read_unlock_irq(&snd_pcm_link_rwlock); |
| 563 | } |
| 564 | |
| 565 | #define snd_pcm_stream_lock_irqsave(substream, flags) \ |
| 566 | do { \ |
| 567 | read_lock_irqsave(&snd_pcm_link_rwlock, (flags)); \ |
| 568 | spin_lock(&substream->self_group.lock); \ |
| 569 | } while (0) |
| 570 | |
| 571 | #define snd_pcm_stream_unlock_irqrestore(substream, flags) \ |
| 572 | do { \ |
| 573 | spin_unlock(&substream->self_group.lock); \ |
| 574 | read_unlock_irqrestore(&snd_pcm_link_rwlock, (flags)); \ |
| 575 | } while (0) |
| 576 | |
Takashi Iwai | ef991b9 | 2007-02-22 12:52:53 +0100 | [diff] [blame] | 577 | #define snd_pcm_group_for_each_entry(s, substream) \ |
| 578 | list_for_each_entry(s, &substream->group->substreams, link_list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 580 | static inline int snd_pcm_running(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | { |
| 582 | return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING || |
| 583 | (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING && |
| 584 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK)); |
| 585 | } |
| 586 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 587 | static inline ssize_t bytes_to_samples(struct snd_pcm_runtime *runtime, ssize_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | { |
| 589 | return size * 8 / runtime->sample_bits; |
| 590 | } |
| 591 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 592 | static inline snd_pcm_sframes_t bytes_to_frames(struct snd_pcm_runtime *runtime, ssize_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | { |
| 594 | return size * 8 / runtime->frame_bits; |
| 595 | } |
| 596 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 597 | static inline ssize_t samples_to_bytes(struct snd_pcm_runtime *runtime, ssize_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | { |
| 599 | return size * runtime->sample_bits / 8; |
| 600 | } |
| 601 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 602 | static inline ssize_t frames_to_bytes(struct snd_pcm_runtime *runtime, snd_pcm_sframes_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | { |
| 604 | return size * runtime->frame_bits / 8; |
| 605 | } |
| 606 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 607 | static inline int frame_aligned(struct snd_pcm_runtime *runtime, ssize_t bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | { |
| 609 | return bytes % runtime->byte_align == 0; |
| 610 | } |
| 611 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 612 | static inline size_t snd_pcm_lib_buffer_bytes(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 614 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 615 | return frames_to_bytes(runtime, runtime->buffer_size); |
| 616 | } |
| 617 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 618 | static inline size_t snd_pcm_lib_period_bytes(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 620 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | return frames_to_bytes(runtime, runtime->period_size); |
| 622 | } |
| 623 | |
| 624 | /* |
| 625 | * result is: 0 ... (boundary - 1) |
| 626 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 627 | static inline snd_pcm_uframes_t snd_pcm_playback_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | { |
| 629 | snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr; |
| 630 | if (avail < 0) |
| 631 | avail += runtime->boundary; |
| 632 | else if ((snd_pcm_uframes_t) avail >= runtime->boundary) |
| 633 | avail -= runtime->boundary; |
| 634 | return avail; |
| 635 | } |
| 636 | |
| 637 | /* |
| 638 | * result is: 0 ... (boundary - 1) |
| 639 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 640 | static inline snd_pcm_uframes_t snd_pcm_capture_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | { |
| 642 | snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr; |
| 643 | if (avail < 0) |
| 644 | avail += runtime->boundary; |
| 645 | return avail; |
| 646 | } |
| 647 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 648 | static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | { |
| 650 | return runtime->buffer_size - snd_pcm_playback_avail(runtime); |
| 651 | } |
| 652 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 653 | static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | { |
| 655 | return runtime->buffer_size - snd_pcm_capture_avail(runtime); |
| 656 | } |
| 657 | |
| 658 | /** |
| 659 | * snd_pcm_playback_ready - check whether the playback buffer is available |
| 660 | * @substream: the pcm substream instance |
| 661 | * |
| 662 | * Checks whether enough free space is available on the playback buffer. |
| 663 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 664 | * Return: Non-zero if available, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 666 | static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 668 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min; |
| 670 | } |
| 671 | |
| 672 | /** |
| 673 | * snd_pcm_capture_ready - check whether the capture buffer is available |
| 674 | * @substream: the pcm substream instance |
| 675 | * |
| 676 | * Checks whether enough capture data is available on the capture buffer. |
| 677 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 678 | * Return: Non-zero if available, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 679 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 680 | static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 682 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min; |
| 684 | } |
| 685 | |
| 686 | /** |
| 687 | * snd_pcm_playback_data - check whether any data exists on the playback buffer |
| 688 | * @substream: the pcm substream instance |
| 689 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 690 | * Checks whether any data exists on the playback buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 692 | * Return: Non-zero if any data exists, or zero if not. If stop_threshold |
| 693 | * is bigger or equal to boundary, then this function returns always non-zero. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 694 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 695 | static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 697 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 698 | |
| 699 | if (runtime->stop_threshold >= runtime->boundary) |
| 700 | return 1; |
| 701 | return snd_pcm_playback_avail(runtime) < runtime->buffer_size; |
| 702 | } |
| 703 | |
| 704 | /** |
| 705 | * snd_pcm_playback_empty - check whether the playback buffer is empty |
| 706 | * @substream: the pcm substream instance |
| 707 | * |
| 708 | * Checks whether the playback buffer is empty. |
| 709 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 710 | * Return: Non-zero if empty, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 712 | static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 714 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 715 | return snd_pcm_playback_avail(runtime) >= runtime->buffer_size; |
| 716 | } |
| 717 | |
| 718 | /** |
| 719 | * snd_pcm_capture_empty - check whether the capture buffer is empty |
| 720 | * @substream: the pcm substream instance |
| 721 | * |
| 722 | * Checks whether the capture buffer is empty. |
| 723 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 724 | * Return: Non-zero if empty, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 726 | static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 728 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | return snd_pcm_capture_avail(runtime) == 0; |
| 730 | } |
| 731 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 732 | static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream, |
| 733 | struct snd_pcm_substream *master) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | { |
| 735 | substream->runtime->trigger_master = master; |
| 736 | } |
| 737 | |
| 738 | static inline int hw_is_mask(int var) |
| 739 | { |
| 740 | return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK && |
| 741 | var <= SNDRV_PCM_HW_PARAM_LAST_MASK; |
| 742 | } |
| 743 | |
| 744 | static inline int hw_is_interval(int var) |
| 745 | { |
| 746 | return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL && |
| 747 | var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; |
| 748 | } |
| 749 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 750 | static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | snd_pcm_hw_param_t var) |
| 752 | { |
| 753 | return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
| 754 | } |
| 755 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 756 | static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | snd_pcm_hw_param_t var) |
| 758 | { |
| 759 | return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
| 760 | } |
| 761 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 762 | static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 763 | snd_pcm_hw_param_t var) |
| 764 | { |
Takashi Iwai | b9f09a4 | 2007-09-11 00:33:48 +0200 | [diff] [blame] | 765 | return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | } |
| 767 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 768 | static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | snd_pcm_hw_param_t var) |
| 770 | { |
Takashi Iwai | b9f09a4 | 2007-09-11 00:33:48 +0200 | [diff] [blame] | 771 | return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | } |
| 773 | |
Takashi Iwai | b51beb7 | 2011-07-26 12:02:56 +0200 | [diff] [blame] | 774 | #define params_channels(p) \ |
| 775 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min) |
| 776 | #define params_rate(p) \ |
| 777 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_RATE)->min) |
| 778 | #define params_period_size(p) \ |
| 779 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min) |
| 780 | #define params_periods(p) \ |
| 781 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_PERIODS)->min) |
| 782 | #define params_buffer_size(p) \ |
| 783 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min) |
| 784 | #define params_buffer_bytes(p) \ |
| 785 | (hw_param_interval_c((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 786 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 787 | int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v); |
| 788 | void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); |
| 789 | void snd_interval_div(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); |
| 790 | void snd_interval_muldivk(const struct snd_interval *a, const struct snd_interval *b, |
| 791 | unsigned int k, struct snd_interval *c); |
| 792 | void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, |
| 793 | const struct snd_interval *b, struct snd_interval *c); |
Mark Brown | 4af87a9 | 2012-03-14 19:48:43 +0000 | [diff] [blame] | 794 | int snd_interval_list(struct snd_interval *i, unsigned int count, |
| 795 | const unsigned int *list, unsigned int mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 796 | int snd_interval_ratnum(struct snd_interval *i, |
| 797 | unsigned int rats_count, struct snd_ratnum *rats, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | unsigned int *nump, unsigned int *denp); |
| 799 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 800 | void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params); |
| 801 | void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 802 | int snd_pcm_hw_params_choose(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 804 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 805 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 806 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream); |
| 807 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 808 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 809 | int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | u_int32_t mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 811 | int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | u_int64_t mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 813 | int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | unsigned int min, unsigned int max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 815 | int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var); |
| 816 | int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | unsigned int cond, |
| 818 | snd_pcm_hw_param_t var, |
Mark Brown | 1464189 | 2012-07-05 12:15:01 +0100 | [diff] [blame] | 819 | const struct snd_pcm_hw_constraint_list *l); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 820 | int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | unsigned int cond, |
| 822 | snd_pcm_hw_param_t var, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 823 | struct snd_pcm_hw_constraint_ratnums *r); |
| 824 | int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | unsigned int cond, |
| 826 | snd_pcm_hw_param_t var, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 827 | struct snd_pcm_hw_constraint_ratdens *r); |
| 828 | int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 829 | unsigned int cond, |
| 830 | unsigned int width, |
| 831 | unsigned int msbits); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 832 | int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | unsigned int cond, |
| 834 | snd_pcm_hw_param_t var, |
| 835 | unsigned long step); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 836 | int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 837 | unsigned int cond, |
| 838 | snd_pcm_hw_param_t var); |
Clemens Ladisch | d5b702a | 2011-09-16 23:03:02 +0200 | [diff] [blame] | 839 | int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime, |
| 840 | unsigned int base_rate); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 841 | int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 842 | unsigned int cond, |
| 843 | int var, |
| 844 | snd_pcm_hw_rule_func_t func, void *private, |
| 845 | int dep, ...); |
| 846 | |
| 847 | int snd_pcm_format_signed(snd_pcm_format_t format); |
| 848 | int snd_pcm_format_unsigned(snd_pcm_format_t format); |
| 849 | int snd_pcm_format_linear(snd_pcm_format_t format); |
| 850 | int snd_pcm_format_little_endian(snd_pcm_format_t format); |
| 851 | int snd_pcm_format_big_endian(snd_pcm_format_t format); |
Takashi Iwai | 1b44c28 | 2005-09-09 15:05:33 +0200 | [diff] [blame] | 852 | #if 0 /* just for DocBook */ |
| 853 | /** |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 854 | * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian |
| 855 | * @format: the format to check |
| 856 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 857 | * Return: 1 if the given PCM format is CPU-endian, 0 if |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 858 | * opposite, or a negative error code if endian not specified. |
| 859 | */ |
Takashi Iwai | 8cdfd25 | 2005-09-07 14:08:11 +0200 | [diff] [blame] | 860 | int snd_pcm_format_cpu_endian(snd_pcm_format_t format); |
Takashi Iwai | 1b44c28 | 2005-09-09 15:05:33 +0200 | [diff] [blame] | 861 | #endif /* DocBook */ |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 862 | #ifdef SNDRV_LITTLE_ENDIAN |
Martin Waitz | 9d01a82 | 2005-09-09 13:10:17 -0700 | [diff] [blame] | 863 | #define snd_pcm_format_cpu_endian(format) snd_pcm_format_little_endian(format) |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 864 | #else |
Martin Waitz | 9d01a82 | 2005-09-09 13:10:17 -0700 | [diff] [blame] | 865 | #define snd_pcm_format_cpu_endian(format) snd_pcm_format_big_endian(format) |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 866 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ |
| 868 | int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 869 | ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format); |
| 871 | int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames); |
Masanari Iida | b23f7a0 | 2013-04-18 00:12:55 +0900 | [diff] [blame] | 872 | snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsigned, int big_endian); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 873 | |
Lars-Peter Clausen | e6c2e7e | 2013-05-24 15:18:10 +0200 | [diff] [blame] | 874 | void snd_pcm_set_ops(struct snd_pcm * pcm, int direction, |
| 875 | const struct snd_pcm_ops *ops); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 876 | void snd_pcm_set_sync(struct snd_pcm_substream *substream); |
| 877 | int snd_pcm_lib_interleave_len(struct snd_pcm_substream *substream); |
| 878 | int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | unsigned int cmd, void *arg); |
Jaroslav Kysela | 1250932 | 2010-01-07 15:36:31 +0100 | [diff] [blame] | 880 | int snd_pcm_update_state(struct snd_pcm_substream *substream, |
| 881 | struct snd_pcm_runtime *runtime); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 882 | int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); |
| 883 | int snd_pcm_playback_xrun_check(struct snd_pcm_substream *substream); |
| 884 | int snd_pcm_capture_xrun_check(struct snd_pcm_substream *substream); |
| 885 | int snd_pcm_playback_xrun_asap(struct snd_pcm_substream *substream); |
| 886 | int snd_pcm_capture_xrun_asap(struct snd_pcm_substream *substream); |
| 887 | void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 888 | void snd_pcm_period_elapsed(struct snd_pcm_substream *substream); |
| 889 | snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | const void __user *buf, |
| 891 | snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 892 | snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | void __user *buf, snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 894 | snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 895 | void __user **bufs, snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 896 | snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | void __user **bufs, snd_pcm_uframes_t frames); |
| 898 | |
Clemens Ladisch | 7653d55 | 2007-08-13 17:38:54 +0200 | [diff] [blame] | 899 | extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates; |
| 900 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 901 | int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime); |
Clemens Ladisch | 918f3a0 | 2007-08-13 17:40:54 +0200 | [diff] [blame] | 902 | unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate); |
Dimitris Papastamos | 4be77a5 | 2012-06-15 16:35:28 +0100 | [diff] [blame] | 903 | unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 904 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 905 | static inline void snd_pcm_set_runtime_buffer(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | struct snd_dma_buffer *bufp) |
| 907 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 908 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 909 | if (bufp) { |
| 910 | runtime->dma_buffer_p = bufp; |
| 911 | runtime->dma_area = bufp->area; |
| 912 | runtime->dma_addr = bufp->addr; |
| 913 | runtime->dma_bytes = bufp->bytes; |
| 914 | } else { |
| 915 | runtime->dma_buffer_p = NULL; |
| 916 | runtime->dma_area = NULL; |
| 917 | runtime->dma_addr = 0; |
| 918 | runtime->dma_bytes = 0; |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | /* |
| 923 | * Timer interface |
| 924 | */ |
| 925 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 926 | void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); |
| 927 | void snd_pcm_timer_init(struct snd_pcm_substream *substream); |
| 928 | void snd_pcm_timer_done(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 929 | |
Jaroslav Kysela | b751eef | 2007-12-13 10:19:42 +0100 | [diff] [blame] | 930 | static inline void snd_pcm_gettime(struct snd_pcm_runtime *runtime, |
| 931 | struct timespec *tv) |
| 932 | { |
| 933 | if (runtime->tstamp_type == SNDRV_PCM_TSTAMP_TYPE_MONOTONIC) |
| 934 | do_posix_clock_monotonic_gettime(tv); |
| 935 | else |
| 936 | getnstimeofday(tv); |
| 937 | } |
| 938 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | /* |
| 940 | * Memory |
| 941 | */ |
| 942 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 943 | int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream); |
| 944 | int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm); |
| 945 | int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 946 | int type, struct device *data, |
| 947 | size_t size, size_t max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 948 | int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | int type, void *data, |
| 950 | size_t size, size_t max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 951 | int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size); |
| 952 | int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 954 | int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream, |
| 955 | size_t size, gfp_t gfp_flags); |
| 956 | int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream); |
| 957 | struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream, |
| 958 | unsigned long offset); |
| 959 | #if 0 /* for kernel-doc */ |
| 960 | /** |
| 961 | * snd_pcm_lib_alloc_vmalloc_buffer - allocate virtual DMA buffer |
| 962 | * @substream: the substream to allocate the buffer to |
| 963 | * @size: the requested buffer size, in bytes |
| 964 | * |
| 965 | * Allocates the PCM substream buffer using vmalloc(), i.e., the memory is |
| 966 | * contiguous in kernel virtual space, but not in physical memory. Use this |
| 967 | * if the buffer is accessed by kernel code but not by device DMA. |
| 968 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 969 | * Return: 1 if the buffer was changed, 0 if not changed, or a negative error |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 970 | * code. |
| 971 | */ |
| 972 | static int snd_pcm_lib_alloc_vmalloc_buffer |
| 973 | (struct snd_pcm_substream *substream, size_t size); |
| 974 | /** |
| 975 | * snd_pcm_lib_alloc_vmalloc_32_buffer - allocate 32-bit-addressable buffer |
| 976 | * @substream: the substream to allocate the buffer to |
| 977 | * @size: the requested buffer size, in bytes |
| 978 | * |
| 979 | * This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses |
| 980 | * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory. |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 981 | * |
| 982 | * Return: 1 if the buffer was changed, 0 if not changed, or a negative error |
| 983 | * code. |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 984 | */ |
| 985 | static int snd_pcm_lib_alloc_vmalloc_32_buffer |
| 986 | (struct snd_pcm_substream *substream, size_t size); |
| 987 | #endif |
| 988 | #define snd_pcm_lib_alloc_vmalloc_buffer(subs, size) \ |
| 989 | _snd_pcm_lib_alloc_vmalloc_buffer \ |
| 990 | (subs, size, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO) |
| 991 | #define snd_pcm_lib_alloc_vmalloc_32_buffer(subs, size) \ |
| 992 | _snd_pcm_lib_alloc_vmalloc_buffer \ |
| 993 | (subs, size, GFP_KERNEL | GFP_DMA32 | __GFP_ZERO) |
| 994 | |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 995 | #define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p) |
| 996 | |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 997 | #ifdef CONFIG_SND_DMA_SGBUF |
Takashi Iwai | 77a23f2 | 2008-08-21 13:00:13 +0200 | [diff] [blame] | 998 | /* |
| 999 | * SG-buffer handling |
| 1000 | */ |
| 1001 | #define snd_pcm_substream_sgbuf(substream) \ |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1002 | snd_pcm_get_dma_buf(substream)->private_data |
Takashi Iwai | 77a23f2 | 2008-08-21 13:00:13 +0200 | [diff] [blame] | 1003 | |
| 1004 | struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, |
| 1005 | unsigned long offset); |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1006 | #else /* !SND_DMA_SGBUF */ |
| 1007 | /* |
| 1008 | * fake using a continuous buffer |
| 1009 | */ |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1010 | #define snd_pcm_sgbuf_ops_page NULL |
| 1011 | #endif /* SND_DMA_SGBUF */ |
| 1012 | |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1013 | static inline dma_addr_t |
| 1014 | snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs) |
| 1015 | { |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1016 | return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs); |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1017 | } |
| 1018 | |
| 1019 | static inline void * |
| 1020 | snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs) |
| 1021 | { |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1022 | return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs); |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1023 | } |
| 1024 | |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1025 | static inline unsigned int |
| 1026 | snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream, |
| 1027 | unsigned int ofs, unsigned int size) |
| 1028 | { |
| 1029 | return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size); |
| 1030 | } |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1031 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1032 | /* handle mmap counter - PCM mmap callback should handle this counter properly */ |
| 1033 | static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area) |
| 1034 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1035 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1036 | atomic_inc(&substream->mmap_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area) |
| 1040 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1041 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1042 | atomic_dec(&substream->mmap_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | } |
| 1044 | |
Takashi Iwai | 18a2b96 | 2011-09-28 17:12:59 +0200 | [diff] [blame] | 1045 | int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream, |
| 1046 | struct vm_area_struct *area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | /* mmap for io-memory area */ |
| 1048 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) |
| 1049 | #define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1050 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_struct *area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1051 | #else |
| 1052 | #define SNDRV_PCM_INFO_MMAP_IOMEM 0 |
| 1053 | #define snd_pcm_lib_mmap_iomem NULL |
| 1054 | #endif |
| 1055 | |
Benjamin Herrenschmidt | 3674f19 | 2011-03-25 17:51:54 +1100 | [diff] [blame] | 1056 | #define snd_pcm_lib_mmap_vmalloc NULL |
Takashi Iwai | c32d977 | 2010-01-18 14:58:57 +0100 | [diff] [blame] | 1057 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) |
| 1059 | { |
| 1060 | *max = dma < 4 ? 64 * 1024 : 128 * 1024; |
| 1061 | } |
| 1062 | |
| 1063 | /* |
| 1064 | * Misc |
| 1065 | */ |
| 1066 | |
| 1067 | #define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\ |
| 1068 | (IEC958_AES1_CON_ORIGINAL<<8)|\ |
| 1069 | (IEC958_AES1_CON_PCM_CODER<<8)|\ |
| 1070 | (IEC958_AES3_CON_FS_48000<<24)) |
| 1071 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1072 | #define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime) |
| 1073 | |
Takashi Iwai | 6e5265e | 2009-09-08 14:26:51 +0200 | [diff] [blame] | 1074 | const char *snd_pcm_format_name(snd_pcm_format_t format); |
| 1075 | |
Ola Lilja | 1aad779 | 2012-05-24 15:26:03 +0200 | [diff] [blame] | 1076 | /** |
Randy Dunlap | 8513915 | 2012-08-18 17:43:05 -0700 | [diff] [blame] | 1077 | * snd_pcm_stream_str - Get a string naming the direction of a stream |
| 1078 | * @substream: the pcm substream instance |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 1079 | * |
| 1080 | * Return: A string naming the direction of the stream. |
Ola Lilja | 1aad779 | 2012-05-24 15:26:03 +0200 | [diff] [blame] | 1081 | */ |
| 1082 | static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream) |
| 1083 | { |
| 1084 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1085 | return "Playback"; |
| 1086 | else |
| 1087 | return "Capture"; |
| 1088 | } |
| 1089 | |
Takashi Iwai | 2d3391e | 2012-07-27 18:27:00 +0200 | [diff] [blame] | 1090 | /* |
| 1091 | * PCM channel-mapping control API |
| 1092 | */ |
| 1093 | /* array element of channel maps */ |
| 1094 | struct snd_pcm_chmap_elem { |
| 1095 | unsigned char channels; |
| 1096 | unsigned char map[15]; |
| 1097 | }; |
| 1098 | |
| 1099 | /* channel map information; retrieved via snd_kcontrol_chip() */ |
| 1100 | struct snd_pcm_chmap { |
| 1101 | struct snd_pcm *pcm; /* assigned PCM instance */ |
| 1102 | int stream; /* PLAYBACK or CAPTURE */ |
| 1103 | struct snd_kcontrol *kctl; |
| 1104 | const struct snd_pcm_chmap_elem *chmap; |
| 1105 | unsigned int max_channels; |
| 1106 | unsigned int channel_mask; /* optional: active channels bitmask */ |
| 1107 | void *private_data; /* optional: private data pointer */ |
| 1108 | }; |
| 1109 | |
| 1110 | /* get the PCM substream assigned to the given chmap info */ |
| 1111 | static inline struct snd_pcm_substream * |
| 1112 | snd_pcm_chmap_substream(struct snd_pcm_chmap *info, unsigned int idx) |
| 1113 | { |
| 1114 | struct snd_pcm_substream *s; |
| 1115 | for (s = info->pcm->streams[info->stream].substream; s; s = s->next) |
| 1116 | if (s->number == idx) |
| 1117 | return s; |
| 1118 | return NULL; |
| 1119 | } |
| 1120 | |
| 1121 | /* ALSA-standard channel maps (RL/RR prior to C/LFE) */ |
| 1122 | extern const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[]; |
| 1123 | /* Other world's standard channel maps (C/LFE prior to RL/RR) */ |
| 1124 | extern const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[]; |
| 1125 | |
| 1126 | /* bit masks to be passed to snd_pcm_chmap.channel_mask field */ |
| 1127 | #define SND_PCM_CHMAP_MASK_24 ((1U << 2) | (1U << 4)) |
| 1128 | #define SND_PCM_CHMAP_MASK_246 (SND_PCM_CHMAP_MASK_24 | (1U << 6)) |
| 1129 | #define SND_PCM_CHMAP_MASK_2468 (SND_PCM_CHMAP_MASK_246 | (1U << 8)) |
| 1130 | |
| 1131 | int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream, |
| 1132 | const struct snd_pcm_chmap_elem *chmap, |
| 1133 | int max_channels, |
| 1134 | unsigned long private_value, |
| 1135 | struct snd_pcm_chmap **info_ret); |
| 1136 | |
Eldad Zack | 74c34ca | 2013-04-23 01:00:41 +0200 | [diff] [blame] | 1137 | /* Strong-typed conversion of pcm_format to bitwise */ |
| 1138 | static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format) |
| 1139 | { |
| 1140 | return 1ULL << (__force int) pcm_format; |
| 1141 | } |
| 1142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1143 | #endif /* __SOUND_PCM_H */ |