Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Digital Audio (PCM) abstract layer |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 3 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/init.h> |
| 23 | #include <linux/slab.h> |
Paul Gortmaker | da155d5 | 2011-07-15 12:38:28 -0400 | [diff] [blame] | 24 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 25 | #include <linux/time.h> |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 26 | #include <linux/mutex.h> |
Paul Gortmaker | 51990e8 | 2012-01-22 11:23:42 -0500 | [diff] [blame] | 27 | #include <linux/device.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 28 | #include <sound/core.h> |
| 29 | #include <sound/minors.h> |
| 30 | #include <sound/pcm.h> |
| 31 | #include <sound/control.h> |
| 32 | #include <sound/info.h> |
| 33 | |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 34 | MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>, Abramo Bagnara <abramo@alsa-project.org>"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 35 | MODULE_DESCRIPTION("Midlevel PCM code for ALSA."); |
| 36 | MODULE_LICENSE("GPL"); |
| 37 | |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 38 | static LIST_HEAD(snd_pcm_devices); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | static LIST_HEAD(snd_pcm_notify_list); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 40 | static DEFINE_MUTEX(register_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 42 | static int snd_pcm_free(struct snd_pcm *pcm); |
| 43 | static int snd_pcm_dev_free(struct snd_device *device); |
| 44 | static int snd_pcm_dev_register(struct snd_device *device); |
| 45 | static int snd_pcm_dev_disconnect(struct snd_device *device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 47 | static struct snd_pcm *snd_pcm_get(struct snd_card *card, int device) |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 48 | { |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 49 | struct snd_pcm *pcm; |
| 50 | |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 51 | list_for_each_entry(pcm, &snd_pcm_devices, list) { |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 52 | if (pcm->card == card && pcm->device == device) |
| 53 | return pcm; |
| 54 | } |
| 55 | return NULL; |
| 56 | } |
| 57 | |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 58 | static int snd_pcm_next(struct snd_card *card, int device) |
| 59 | { |
| 60 | struct snd_pcm *pcm; |
| 61 | |
| 62 | list_for_each_entry(pcm, &snd_pcm_devices, list) { |
| 63 | if (pcm->card == card && pcm->device > device) |
| 64 | return pcm->device; |
| 65 | else if (pcm->card->number > card->number) |
| 66 | return -1; |
| 67 | } |
| 68 | return -1; |
| 69 | } |
| 70 | |
| 71 | static int snd_pcm_add(struct snd_pcm *newpcm) |
| 72 | { |
| 73 | struct snd_pcm *pcm; |
| 74 | |
| 75 | list_for_each_entry(pcm, &snd_pcm_devices, list) { |
| 76 | if (pcm->card == newpcm->card && pcm->device == newpcm->device) |
| 77 | return -EBUSY; |
| 78 | if (pcm->card->number > newpcm->card->number || |
| 79 | (pcm->card == newpcm->card && |
| 80 | pcm->device > newpcm->device)) { |
| 81 | list_add(&newpcm->list, pcm->list.prev); |
| 82 | return 0; |
| 83 | } |
| 84 | } |
| 85 | list_add_tail(&newpcm->list, &snd_pcm_devices); |
| 86 | return 0; |
| 87 | } |
| 88 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 89 | static int snd_pcm_control_ioctl(struct snd_card *card, |
| 90 | struct snd_ctl_file *control, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | unsigned int cmd, unsigned long arg) |
| 92 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | switch (cmd) { |
| 94 | case SNDRV_CTL_IOCTL_PCM_NEXT_DEVICE: |
| 95 | { |
| 96 | int device; |
| 97 | |
| 98 | if (get_user(device, (int __user *)arg)) |
| 99 | return -EFAULT; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 100 | mutex_lock(®ister_mutex); |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 101 | device = snd_pcm_next(card, device); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 102 | mutex_unlock(®ister_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | if (put_user(device, (int __user *)arg)) |
| 104 | return -EFAULT; |
| 105 | return 0; |
| 106 | } |
| 107 | case SNDRV_CTL_IOCTL_PCM_INFO: |
| 108 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 109 | struct snd_pcm_info __user *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | unsigned int device, subdevice; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 111 | int stream; |
| 112 | struct snd_pcm *pcm; |
| 113 | struct snd_pcm_str *pstr; |
| 114 | struct snd_pcm_substream *substream; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 115 | int err; |
| 116 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 117 | info = (struct snd_pcm_info __user *)arg; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | if (get_user(device, &info->device)) |
| 119 | return -EFAULT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | if (get_user(stream, &info->stream)) |
| 121 | return -EFAULT; |
| 122 | if (stream < 0 || stream > 1) |
| 123 | return -EINVAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | if (get_user(subdevice, &info->subdevice)) |
| 125 | return -EFAULT; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 126 | mutex_lock(®ister_mutex); |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 127 | pcm = snd_pcm_get(card, device); |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 128 | if (pcm == NULL) { |
| 129 | err = -ENXIO; |
| 130 | goto _error; |
| 131 | } |
| 132 | pstr = &pcm->streams[stream]; |
| 133 | if (pstr->substream_count == 0) { |
| 134 | err = -ENOENT; |
| 135 | goto _error; |
| 136 | } |
| 137 | if (subdevice >= pstr->substream_count) { |
| 138 | err = -ENXIO; |
| 139 | goto _error; |
| 140 | } |
| 141 | for (substream = pstr->substream; substream; |
| 142 | substream = substream->next) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | if (substream->number == (int)subdevice) |
| 144 | break; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 145 | if (substream == NULL) { |
| 146 | err = -ENXIO; |
| 147 | goto _error; |
| 148 | } |
| 149 | err = snd_pcm_info_user(substream, info); |
| 150 | _error: |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 151 | mutex_unlock(®ister_mutex); |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 152 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 153 | } |
| 154 | case SNDRV_CTL_IOCTL_PCM_PREFER_SUBDEVICE: |
| 155 | { |
| 156 | int val; |
| 157 | |
| 158 | if (get_user(val, (int __user *)arg)) |
| 159 | return -EFAULT; |
| 160 | control->prefer_pcm_subdevice = val; |
| 161 | return 0; |
| 162 | } |
| 163 | } |
| 164 | return -ENOIOCTLCMD; |
| 165 | } |
Jaroslav Kysela | 21a3479 | 2006-01-13 09:12:11 +0100 | [diff] [blame] | 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | #define FORMAT(v) [SNDRV_PCM_FORMAT_##v] = #v |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | static char *snd_pcm_format_names[] = { |
| 170 | FORMAT(S8), |
| 171 | FORMAT(U8), |
| 172 | FORMAT(S16_LE), |
| 173 | FORMAT(S16_BE), |
| 174 | FORMAT(U16_LE), |
| 175 | FORMAT(U16_BE), |
| 176 | FORMAT(S24_LE), |
| 177 | FORMAT(S24_BE), |
| 178 | FORMAT(U24_LE), |
| 179 | FORMAT(U24_BE), |
| 180 | FORMAT(S32_LE), |
| 181 | FORMAT(S32_BE), |
| 182 | FORMAT(U32_LE), |
| 183 | FORMAT(U32_BE), |
| 184 | FORMAT(FLOAT_LE), |
| 185 | FORMAT(FLOAT_BE), |
| 186 | FORMAT(FLOAT64_LE), |
| 187 | FORMAT(FLOAT64_BE), |
| 188 | FORMAT(IEC958_SUBFRAME_LE), |
| 189 | FORMAT(IEC958_SUBFRAME_BE), |
| 190 | FORMAT(MU_LAW), |
| 191 | FORMAT(A_LAW), |
| 192 | FORMAT(IMA_ADPCM), |
| 193 | FORMAT(MPEG), |
| 194 | FORMAT(GSM), |
| 195 | FORMAT(SPECIAL), |
| 196 | FORMAT(S24_3LE), |
| 197 | FORMAT(S24_3BE), |
| 198 | FORMAT(U24_3LE), |
| 199 | FORMAT(U24_3BE), |
| 200 | FORMAT(S20_3LE), |
| 201 | FORMAT(S20_3BE), |
| 202 | FORMAT(U20_3LE), |
| 203 | FORMAT(U20_3BE), |
| 204 | FORMAT(S18_3LE), |
| 205 | FORMAT(S18_3BE), |
| 206 | FORMAT(U18_3LE), |
| 207 | FORMAT(U18_3BE), |
Dan Carpenter | 7a28826 | 2010-08-27 22:02:15 +0200 | [diff] [blame] | 208 | FORMAT(G723_24), |
| 209 | FORMAT(G723_24_1B), |
| 210 | FORMAT(G723_40), |
| 211 | FORMAT(G723_40_1B), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | }; |
| 213 | |
Takashi Iwai | 6e5265e | 2009-09-08 14:26:51 +0200 | [diff] [blame] | 214 | const char *snd_pcm_format_name(snd_pcm_format_t format) |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 215 | { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 216 | if ((__force unsigned int)format >= ARRAY_SIZE(snd_pcm_format_names)) |
Dan Carpenter | 7a28826 | 2010-08-27 22:02:15 +0200 | [diff] [blame] | 217 | return "Unknown"; |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 218 | return snd_pcm_format_names[(__force unsigned int)format]; |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 219 | } |
Takashi Iwai | 6e5265e | 2009-09-08 14:26:51 +0200 | [diff] [blame] | 220 | EXPORT_SYMBOL_GPL(snd_pcm_format_name); |
| 221 | |
| 222 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
| 223 | |
| 224 | #define STATE(v) [SNDRV_PCM_STATE_##v] = #v |
| 225 | #define STREAM(v) [SNDRV_PCM_STREAM_##v] = #v |
| 226 | #define READY(v) [SNDRV_PCM_READY_##v] = #v |
| 227 | #define XRUN(v) [SNDRV_PCM_XRUN_##v] = #v |
| 228 | #define SILENCE(v) [SNDRV_PCM_SILENCE_##v] = #v |
| 229 | #define TSTAMP(v) [SNDRV_PCM_TSTAMP_##v] = #v |
| 230 | #define ACCESS(v) [SNDRV_PCM_ACCESS_##v] = #v |
| 231 | #define START(v) [SNDRV_PCM_START_##v] = #v |
| 232 | #define SUBFORMAT(v) [SNDRV_PCM_SUBFORMAT_##v] = #v |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 233 | |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 234 | static char *snd_pcm_stream_names[] = { |
| 235 | STREAM(PLAYBACK), |
| 236 | STREAM(CAPTURE), |
| 237 | }; |
| 238 | |
| 239 | static char *snd_pcm_state_names[] = { |
| 240 | STATE(OPEN), |
| 241 | STATE(SETUP), |
| 242 | STATE(PREPARED), |
| 243 | STATE(RUNNING), |
| 244 | STATE(XRUN), |
| 245 | STATE(DRAINING), |
| 246 | STATE(PAUSED), |
| 247 | STATE(SUSPENDED), |
| 248 | }; |
| 249 | |
| 250 | static char *snd_pcm_access_names[] = { |
| 251 | ACCESS(MMAP_INTERLEAVED), |
| 252 | ACCESS(MMAP_NONINTERLEAVED), |
| 253 | ACCESS(MMAP_COMPLEX), |
| 254 | ACCESS(RW_INTERLEAVED), |
| 255 | ACCESS(RW_NONINTERLEAVED), |
| 256 | }; |
| 257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | static char *snd_pcm_subformat_names[] = { |
| 259 | SUBFORMAT(STD), |
| 260 | }; |
| 261 | |
| 262 | static char *snd_pcm_tstamp_mode_names[] = { |
| 263 | TSTAMP(NONE), |
Jaroslav Kysela | 8c12158 | 2008-01-11 08:45:08 +0100 | [diff] [blame] | 264 | TSTAMP(ENABLE), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | }; |
| 266 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 267 | static const char *snd_pcm_stream_name(int stream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | return snd_pcm_stream_names[stream]; |
| 270 | } |
| 271 | |
| 272 | static const char *snd_pcm_access_name(snd_pcm_access_t access) |
| 273 | { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 274 | return snd_pcm_access_names[(__force int)access]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | } |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | static const char *snd_pcm_subformat_name(snd_pcm_subformat_t subformat) |
| 278 | { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 279 | return snd_pcm_subformat_names[(__force int)subformat]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | } |
| 281 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 282 | static const char *snd_pcm_tstamp_mode_name(int mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | return snd_pcm_tstamp_mode_names[mode]; |
| 285 | } |
| 286 | |
| 287 | static const char *snd_pcm_state_name(snd_pcm_state_t state) |
| 288 | { |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 289 | return snd_pcm_state_names[(__force int)state]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 293 | #include <linux/soundcard.h> |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 294 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 295 | static const char *snd_pcm_oss_format_name(int format) |
| 296 | { |
| 297 | switch (format) { |
| 298 | case AFMT_MU_LAW: |
| 299 | return "MU_LAW"; |
| 300 | case AFMT_A_LAW: |
| 301 | return "A_LAW"; |
| 302 | case AFMT_IMA_ADPCM: |
| 303 | return "IMA_ADPCM"; |
| 304 | case AFMT_U8: |
| 305 | return "U8"; |
| 306 | case AFMT_S16_LE: |
| 307 | return "S16_LE"; |
| 308 | case AFMT_S16_BE: |
| 309 | return "S16_BE"; |
| 310 | case AFMT_S8: |
| 311 | return "S8"; |
| 312 | case AFMT_U16_LE: |
| 313 | return "U16_LE"; |
| 314 | case AFMT_U16_BE: |
| 315 | return "U16_BE"; |
| 316 | case AFMT_MPEG: |
| 317 | return "MPEG"; |
| 318 | default: |
| 319 | return "unknown"; |
| 320 | } |
| 321 | } |
| 322 | #endif |
| 323 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 324 | static void snd_pcm_proc_info_read(struct snd_pcm_substream *substream, |
| 325 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 327 | struct snd_pcm_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | int err; |
| 329 | |
Takashi Iwai | 7c22f1a | 2005-10-10 11:46:31 +0200 | [diff] [blame] | 330 | if (! substream) |
| 331 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | |
| 333 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 334 | if (! info) { |
| 335 | printk(KERN_DEBUG "snd_pcm_proc_info_read: cannot malloc\n"); |
| 336 | return; |
| 337 | } |
| 338 | |
| 339 | err = snd_pcm_info(substream, info); |
| 340 | if (err < 0) { |
| 341 | snd_iprintf(buffer, "error %d\n", err); |
| 342 | kfree(info); |
| 343 | return; |
| 344 | } |
| 345 | snd_iprintf(buffer, "card: %d\n", info->card); |
| 346 | snd_iprintf(buffer, "device: %d\n", info->device); |
| 347 | snd_iprintf(buffer, "subdevice: %d\n", info->subdevice); |
| 348 | snd_iprintf(buffer, "stream: %s\n", snd_pcm_stream_name(info->stream)); |
| 349 | snd_iprintf(buffer, "id: %s\n", info->id); |
| 350 | snd_iprintf(buffer, "name: %s\n", info->name); |
| 351 | snd_iprintf(buffer, "subname: %s\n", info->subname); |
| 352 | snd_iprintf(buffer, "class: %d\n", info->dev_class); |
| 353 | snd_iprintf(buffer, "subclass: %d\n", info->dev_subclass); |
| 354 | snd_iprintf(buffer, "subdevices_count: %d\n", info->subdevices_count); |
| 355 | snd_iprintf(buffer, "subdevices_avail: %d\n", info->subdevices_avail); |
| 356 | kfree(info); |
| 357 | } |
| 358 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 359 | static void snd_pcm_stream_proc_info_read(struct snd_info_entry *entry, |
| 360 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 362 | snd_pcm_proc_info_read(((struct snd_pcm_str *)entry->private_data)->substream, |
| 363 | buffer); |
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 | static void snd_pcm_substream_proc_info_read(struct snd_info_entry *entry, |
| 367 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 368 | { |
Joe Perches | 9fe856e | 2010-09-04 18:52:54 -0700 | [diff] [blame] | 369 | snd_pcm_proc_info_read(entry->private_data, buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 370 | } |
| 371 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 372 | static void snd_pcm_substream_proc_hw_params_read(struct snd_info_entry *entry, |
| 373 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 374 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 375 | struct snd_pcm_substream *substream = entry->private_data; |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 376 | struct snd_pcm_runtime *runtime; |
| 377 | |
| 378 | mutex_lock(&substream->pcm->open_mutex); |
| 379 | runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | if (!runtime) { |
| 381 | snd_iprintf(buffer, "closed\n"); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 382 | goto unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 385 | snd_iprintf(buffer, "no setup\n"); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 386 | goto unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | } |
| 388 | snd_iprintf(buffer, "access: %s\n", snd_pcm_access_name(runtime->access)); |
| 389 | snd_iprintf(buffer, "format: %s\n", snd_pcm_format_name(runtime->format)); |
| 390 | snd_iprintf(buffer, "subformat: %s\n", snd_pcm_subformat_name(runtime->subformat)); |
| 391 | snd_iprintf(buffer, "channels: %u\n", runtime->channels); |
| 392 | snd_iprintf(buffer, "rate: %u (%u/%u)\n", runtime->rate, runtime->rate_num, runtime->rate_den); |
| 393 | snd_iprintf(buffer, "period_size: %lu\n", runtime->period_size); |
| 394 | snd_iprintf(buffer, "buffer_size: %lu\n", runtime->buffer_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 396 | if (substream->oss.oss) { |
| 397 | snd_iprintf(buffer, "OSS format: %s\n", snd_pcm_oss_format_name(runtime->oss.format)); |
| 398 | snd_iprintf(buffer, "OSS channels: %u\n", runtime->oss.channels); |
| 399 | snd_iprintf(buffer, "OSS rate: %u\n", runtime->oss.rate); |
| 400 | snd_iprintf(buffer, "OSS period bytes: %lu\n", (unsigned long)runtime->oss.period_bytes); |
| 401 | snd_iprintf(buffer, "OSS periods: %u\n", runtime->oss.periods); |
| 402 | snd_iprintf(buffer, "OSS period frames: %lu\n", (unsigned long)runtime->oss.period_frames); |
| 403 | } |
| 404 | #endif |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 405 | unlock: |
| 406 | mutex_unlock(&substream->pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | } |
| 408 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 409 | static void snd_pcm_substream_proc_sw_params_read(struct snd_info_entry *entry, |
| 410 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 412 | struct snd_pcm_substream *substream = entry->private_data; |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 413 | struct snd_pcm_runtime *runtime; |
| 414 | |
| 415 | mutex_lock(&substream->pcm->open_mutex); |
| 416 | runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | if (!runtime) { |
| 418 | snd_iprintf(buffer, "closed\n"); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 419 | goto unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | if (runtime->status->state == SNDRV_PCM_STATE_OPEN) { |
| 422 | snd_iprintf(buffer, "no setup\n"); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 423 | goto unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | } |
| 425 | snd_iprintf(buffer, "tstamp_mode: %s\n", snd_pcm_tstamp_mode_name(runtime->tstamp_mode)); |
| 426 | snd_iprintf(buffer, "period_step: %u\n", runtime->period_step); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | snd_iprintf(buffer, "avail_min: %lu\n", runtime->control->avail_min); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | snd_iprintf(buffer, "start_threshold: %lu\n", runtime->start_threshold); |
| 429 | snd_iprintf(buffer, "stop_threshold: %lu\n", runtime->stop_threshold); |
| 430 | snd_iprintf(buffer, "silence_threshold: %lu\n", runtime->silence_threshold); |
| 431 | snd_iprintf(buffer, "silence_size: %lu\n", runtime->silence_size); |
| 432 | snd_iprintf(buffer, "boundary: %lu\n", runtime->boundary); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 433 | unlock: |
| 434 | mutex_unlock(&substream->pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | } |
| 436 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 437 | static void snd_pcm_substream_proc_status_read(struct snd_info_entry *entry, |
| 438 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 440 | struct snd_pcm_substream *substream = entry->private_data; |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 441 | struct snd_pcm_runtime *runtime; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 442 | struct snd_pcm_status status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | int err; |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 444 | |
| 445 | mutex_lock(&substream->pcm->open_mutex); |
| 446 | runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | if (!runtime) { |
| 448 | snd_iprintf(buffer, "closed\n"); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 449 | goto unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | } |
| 451 | memset(&status, 0, sizeof(status)); |
| 452 | err = snd_pcm_status(substream, &status); |
| 453 | if (err < 0) { |
| 454 | snd_iprintf(buffer, "error %d\n", err); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 455 | goto unlock; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | } |
| 457 | snd_iprintf(buffer, "state: %s\n", snd_pcm_state_name(status.state)); |
Clemens Ladisch | e7373b7 | 2009-11-10 10:13:30 +0100 | [diff] [blame] | 458 | snd_iprintf(buffer, "owner_pid : %d\n", pid_vnr(substream->pid)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | snd_iprintf(buffer, "trigger_time: %ld.%09ld\n", |
| 460 | status.trigger_tstamp.tv_sec, status.trigger_tstamp.tv_nsec); |
| 461 | snd_iprintf(buffer, "tstamp : %ld.%09ld\n", |
| 462 | status.tstamp.tv_sec, status.tstamp.tv_nsec); |
| 463 | snd_iprintf(buffer, "delay : %ld\n", status.delay); |
| 464 | snd_iprintf(buffer, "avail : %ld\n", status.avail); |
| 465 | snd_iprintf(buffer, "avail_max : %ld\n", status.avail_max); |
| 466 | snd_iprintf(buffer, "-----\n"); |
| 467 | snd_iprintf(buffer, "hw_ptr : %ld\n", runtime->status->hw_ptr); |
| 468 | snd_iprintf(buffer, "appl_ptr : %ld\n", runtime->control->appl_ptr); |
Takashi Iwai | 901d46d | 2010-09-16 23:06:50 +0200 | [diff] [blame] | 469 | unlock: |
| 470 | mutex_unlock(&substream->pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
Jaroslav Kysela | 61fb63c | 2006-04-24 21:57:16 +0200 | [diff] [blame] | 473 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 474 | static void snd_pcm_xrun_debug_read(struct snd_info_entry *entry, |
| 475 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 477 | struct snd_pcm_str *pstr = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | snd_iprintf(buffer, "%d\n", pstr->xrun_debug); |
| 479 | } |
| 480 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 481 | static void snd_pcm_xrun_debug_write(struct snd_info_entry *entry, |
| 482 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 483 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 484 | struct snd_pcm_str *pstr = entry->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | char line[64]; |
| 486 | if (!snd_info_get_line(buffer, line, sizeof(line))) |
| 487 | pstr->xrun_debug = simple_strtoul(line, NULL, 10); |
| 488 | } |
| 489 | #endif |
| 490 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 491 | static int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 493 | struct snd_pcm *pcm = pstr->pcm; |
| 494 | struct snd_info_entry *entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | char name[16]; |
| 496 | |
| 497 | sprintf(name, "pcm%i%c", pcm->device, |
| 498 | pstr->stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c'); |
| 499 | if ((entry = snd_info_create_card_entry(pcm->card, name, pcm->card->proc_root)) == NULL) |
| 500 | return -ENOMEM; |
| 501 | entry->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
| 502 | if (snd_info_register(entry) < 0) { |
| 503 | snd_info_free_entry(entry); |
| 504 | return -ENOMEM; |
| 505 | } |
| 506 | pstr->proc_root = entry; |
| 507 | |
| 508 | if ((entry = snd_info_create_card_entry(pcm->card, "info", pstr->proc_root)) != NULL) { |
Takashi Iwai | bf85020 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 509 | snd_info_set_text_ops(entry, pstr, snd_pcm_stream_proc_info_read); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | if (snd_info_register(entry) < 0) { |
| 511 | snd_info_free_entry(entry); |
| 512 | entry = NULL; |
| 513 | } |
| 514 | } |
| 515 | pstr->proc_info_entry = entry; |
| 516 | |
Jaroslav Kysela | 61fb63c | 2006-04-24 21:57:16 +0200 | [diff] [blame] | 517 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 518 | if ((entry = snd_info_create_card_entry(pcm->card, "xrun_debug", |
| 519 | pstr->proc_root)) != NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | entry->c.text.read = snd_pcm_xrun_debug_read; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 521 | entry->c.text.write = snd_pcm_xrun_debug_write; |
Takashi Iwai | bd7bf04 | 2005-04-12 16:27:28 +0200 | [diff] [blame] | 522 | entry->mode |= S_IWUSR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | entry->private_data = pstr; |
| 524 | if (snd_info_register(entry) < 0) { |
| 525 | snd_info_free_entry(entry); |
| 526 | entry = NULL; |
| 527 | } |
| 528 | } |
| 529 | pstr->proc_xrun_debug_entry = entry; |
| 530 | #endif |
| 531 | return 0; |
| 532 | } |
| 533 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 534 | static int snd_pcm_stream_proc_done(struct snd_pcm_str *pstr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | { |
Jaroslav Kysela | 61fb63c | 2006-04-24 21:57:16 +0200 | [diff] [blame] | 536 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 537 | snd_info_free_entry(pstr->proc_xrun_debug_entry); |
| 538 | pstr->proc_xrun_debug_entry = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | #endif |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 540 | snd_info_free_entry(pstr->proc_info_entry); |
| 541 | pstr->proc_info_entry = NULL; |
| 542 | snd_info_free_entry(pstr->proc_root); |
| 543 | pstr->proc_root = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | return 0; |
| 545 | } |
| 546 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 547 | static int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 549 | struct snd_info_entry *entry; |
| 550 | struct snd_card *card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | char name[16]; |
| 552 | |
| 553 | card = substream->pcm->card; |
| 554 | |
| 555 | sprintf(name, "sub%i", substream->number); |
| 556 | if ((entry = snd_info_create_card_entry(card, name, substream->pstr->proc_root)) == NULL) |
| 557 | return -ENOMEM; |
| 558 | entry->mode = S_IFDIR | S_IRUGO | S_IXUGO; |
| 559 | if (snd_info_register(entry) < 0) { |
| 560 | snd_info_free_entry(entry); |
| 561 | return -ENOMEM; |
| 562 | } |
| 563 | substream->proc_root = entry; |
| 564 | |
| 565 | if ((entry = snd_info_create_card_entry(card, "info", substream->proc_root)) != NULL) { |
Takashi Iwai | bf85020 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 566 | snd_info_set_text_ops(entry, substream, |
| 567 | snd_pcm_substream_proc_info_read); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 568 | if (snd_info_register(entry) < 0) { |
| 569 | snd_info_free_entry(entry); |
| 570 | entry = NULL; |
| 571 | } |
| 572 | } |
| 573 | substream->proc_info_entry = entry; |
| 574 | |
| 575 | if ((entry = snd_info_create_card_entry(card, "hw_params", substream->proc_root)) != NULL) { |
Takashi Iwai | bf85020 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 576 | snd_info_set_text_ops(entry, substream, |
| 577 | snd_pcm_substream_proc_hw_params_read); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | if (snd_info_register(entry) < 0) { |
| 579 | snd_info_free_entry(entry); |
| 580 | entry = NULL; |
| 581 | } |
| 582 | } |
| 583 | substream->proc_hw_params_entry = entry; |
| 584 | |
| 585 | if ((entry = snd_info_create_card_entry(card, "sw_params", substream->proc_root)) != NULL) { |
Takashi Iwai | bf85020 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 586 | snd_info_set_text_ops(entry, substream, |
| 587 | snd_pcm_substream_proc_sw_params_read); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 588 | if (snd_info_register(entry) < 0) { |
| 589 | snd_info_free_entry(entry); |
| 590 | entry = NULL; |
| 591 | } |
| 592 | } |
| 593 | substream->proc_sw_params_entry = entry; |
| 594 | |
| 595 | if ((entry = snd_info_create_card_entry(card, "status", substream->proc_root)) != NULL) { |
Takashi Iwai | bf85020 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 596 | snd_info_set_text_ops(entry, substream, |
| 597 | snd_pcm_substream_proc_status_read); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | if (snd_info_register(entry) < 0) { |
| 599 | snd_info_free_entry(entry); |
| 600 | entry = NULL; |
| 601 | } |
| 602 | } |
| 603 | substream->proc_status_entry = entry; |
| 604 | |
| 605 | return 0; |
| 606 | } |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 607 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 608 | static int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | { |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 610 | snd_info_free_entry(substream->proc_info_entry); |
| 611 | substream->proc_info_entry = NULL; |
| 612 | snd_info_free_entry(substream->proc_hw_params_entry); |
| 613 | substream->proc_hw_params_entry = NULL; |
| 614 | snd_info_free_entry(substream->proc_sw_params_entry); |
| 615 | substream->proc_sw_params_entry = NULL; |
| 616 | snd_info_free_entry(substream->proc_status_entry); |
| 617 | substream->proc_status_entry = NULL; |
| 618 | snd_info_free_entry(substream->proc_root); |
| 619 | substream->proc_root = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | return 0; |
| 621 | } |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 622 | #else /* !CONFIG_SND_VERBOSE_PROCFS */ |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 623 | static inline int snd_pcm_stream_proc_init(struct snd_pcm_str *pstr) { return 0; } |
| 624 | static inline int snd_pcm_stream_proc_done(struct snd_pcm_str *pstr) { return 0; } |
| 625 | static inline int snd_pcm_substream_proc_init(struct snd_pcm_substream *substream) { return 0; } |
| 626 | static inline int snd_pcm_substream_proc_done(struct snd_pcm_substream *substream) { return 0; } |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 627 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
| 629 | /** |
| 630 | * snd_pcm_new_stream - create a new PCM stream |
| 631 | * @pcm: the pcm instance |
| 632 | * @stream: the stream direction, SNDRV_PCM_STREAM_XXX |
| 633 | * @substream_count: the number of substreams |
| 634 | * |
| 635 | * Creates a new stream for the pcm. |
| 636 | * The corresponding stream on the pcm must have been empty before |
| 637 | * calling this, i.e. zero must be given to the argument of |
| 638 | * snd_pcm_new(). |
| 639 | * |
| 640 | * Returns zero if successful, or a negative error code on failure. |
| 641 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 642 | 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] | 643 | { |
| 644 | int idx, err; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 645 | struct snd_pcm_str *pstr = &pcm->streams[stream]; |
| 646 | struct snd_pcm_substream *substream, *prev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 647 | |
| 648 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 649 | mutex_init(&pstr->oss.setup_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 650 | #endif |
| 651 | pstr->stream = stream; |
| 652 | pstr->pcm = pcm; |
| 653 | pstr->substream_count = substream_count; |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 654 | if (substream_count > 0 && !pcm->internal) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 655 | err = snd_pcm_stream_proc_init(pstr); |
Takashi Iwai | 73e77ba | 2005-11-17 17:44:01 +0100 | [diff] [blame] | 656 | if (err < 0) { |
| 657 | snd_printk(KERN_ERR "Error in snd_pcm_stream_proc_init\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 658 | return err; |
Takashi Iwai | 73e77ba | 2005-11-17 17:44:01 +0100 | [diff] [blame] | 659 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | } |
| 661 | prev = NULL; |
| 662 | for (idx = 0, prev = NULL; idx < substream_count; idx++) { |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 663 | substream = kzalloc(sizeof(*substream), GFP_KERNEL); |
Takashi Iwai | 73e77ba | 2005-11-17 17:44:01 +0100 | [diff] [blame] | 664 | if (substream == NULL) { |
| 665 | snd_printk(KERN_ERR "Cannot allocate PCM substream\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | return -ENOMEM; |
Takashi Iwai | 73e77ba | 2005-11-17 17:44:01 +0100 | [diff] [blame] | 667 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 668 | substream->pcm = pcm; |
| 669 | substream->pstr = pstr; |
| 670 | substream->number = idx; |
| 671 | substream->stream = stream; |
| 672 | sprintf(substream->name, "subdevice #%i", idx); |
| 673 | substream->buffer_bytes_max = UINT_MAX; |
| 674 | if (prev == NULL) |
| 675 | pstr->substream = substream; |
| 676 | else |
| 677 | prev->next = substream; |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 678 | |
| 679 | if (!pcm->internal) { |
| 680 | err = snd_pcm_substream_proc_init(substream); |
| 681 | if (err < 0) { |
| 682 | snd_printk(KERN_ERR "Error in snd_pcm_stream_proc_init\n"); |
| 683 | if (prev == NULL) |
| 684 | pstr->substream = NULL; |
| 685 | else |
| 686 | prev->next = NULL; |
| 687 | kfree(substream); |
| 688 | return err; |
| 689 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 690 | } |
| 691 | substream->group = &substream->self_group; |
| 692 | spin_lock_init(&substream->self_group.lock); |
| 693 | INIT_LIST_HEAD(&substream->self_group.substreams); |
| 694 | list_add_tail(&substream->link_list, &substream->self_group.substreams); |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 695 | atomic_set(&substream->mmap_count, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 696 | prev = substream; |
| 697 | } |
| 698 | return 0; |
| 699 | } |
| 700 | |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 701 | EXPORT_SYMBOL(snd_pcm_new_stream); |
| 702 | |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 703 | static int _snd_pcm_new(struct snd_card *card, const char *id, int device, |
| 704 | int playback_count, int capture_count, bool internal, |
| 705 | struct snd_pcm **rpcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 706 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 707 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 708 | int err; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 709 | static struct snd_device_ops ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 710 | .dev_free = snd_pcm_dev_free, |
| 711 | .dev_register = snd_pcm_dev_register, |
| 712 | .dev_disconnect = snd_pcm_dev_disconnect, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 713 | }; |
| 714 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 715 | if (snd_BUG_ON(!card)) |
| 716 | return -ENXIO; |
| 717 | if (rpcm) |
| 718 | *rpcm = NULL; |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 719 | pcm = kzalloc(sizeof(*pcm), GFP_KERNEL); |
Takashi Iwai | 73e77ba | 2005-11-17 17:44:01 +0100 | [diff] [blame] | 720 | if (pcm == NULL) { |
| 721 | snd_printk(KERN_ERR "Cannot allocate PCM\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | return -ENOMEM; |
Takashi Iwai | 73e77ba | 2005-11-17 17:44:01 +0100 | [diff] [blame] | 723 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | pcm->card = card; |
| 725 | pcm->device = device; |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 726 | pcm->internal = internal; |
Takashi Iwai | 73e77ba | 2005-11-17 17:44:01 +0100 | [diff] [blame] | 727 | if (id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | strlcpy(pcm->id, id, sizeof(pcm->id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | if ((err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_PLAYBACK, playback_count)) < 0) { |
| 730 | snd_pcm_free(pcm); |
| 731 | return err; |
| 732 | } |
| 733 | if ((err = snd_pcm_new_stream(pcm, SNDRV_PCM_STREAM_CAPTURE, capture_count)) < 0) { |
| 734 | snd_pcm_free(pcm); |
| 735 | return err; |
| 736 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 737 | mutex_init(&pcm->open_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | init_waitqueue_head(&pcm->open_wait); |
| 739 | if ((err = snd_device_new(card, SNDRV_DEV_PCM, pcm, &ops)) < 0) { |
| 740 | snd_pcm_free(pcm); |
| 741 | return err; |
| 742 | } |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 743 | if (rpcm) |
| 744 | *rpcm = pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | return 0; |
| 746 | } |
| 747 | |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 748 | /** |
| 749 | * snd_pcm_new - create a new PCM instance |
| 750 | * @card: the card instance |
| 751 | * @id: the id string |
| 752 | * @device: the device index (zero based) |
| 753 | * @playback_count: the number of substreams for playback |
| 754 | * @capture_count: the number of substreams for capture |
| 755 | * @rpcm: the pointer to store the new pcm instance |
| 756 | * |
| 757 | * Creates a new PCM instance. |
| 758 | * |
| 759 | * The pcm operators have to be set afterwards to the new instance |
| 760 | * via snd_pcm_set_ops(). |
| 761 | * |
| 762 | * Returns zero if successful, or a negative error code on failure. |
| 763 | */ |
| 764 | int snd_pcm_new(struct snd_card *card, const char *id, int device, |
| 765 | int playback_count, int capture_count, struct snd_pcm **rpcm) |
| 766 | { |
| 767 | return _snd_pcm_new(card, id, device, playback_count, capture_count, |
| 768 | false, rpcm); |
| 769 | } |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 770 | EXPORT_SYMBOL(snd_pcm_new); |
| 771 | |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 772 | /** |
| 773 | * snd_pcm_new_internal - create a new internal PCM instance |
| 774 | * @card: the card instance |
| 775 | * @id: the id string |
| 776 | * @device: the device index (zero based - shared with normal PCMs) |
| 777 | * @playback_count: the number of substreams for playback |
| 778 | * @capture_count: the number of substreams for capture |
| 779 | * @rpcm: the pointer to store the new pcm instance |
| 780 | * |
| 781 | * Creates a new internal PCM instance with no userspace device or procfs |
| 782 | * entries. This is used by ASoC Back End PCMs in order to create a PCM that |
| 783 | * will only be used internally by kernel drivers. i.e. it cannot be opened |
| 784 | * by userspace. It provides existing ASoC components drivers with a substream |
| 785 | * and access to any private data. |
| 786 | * |
| 787 | * The pcm operators have to be set afterwards to the new instance |
| 788 | * via snd_pcm_set_ops(). |
| 789 | * |
| 790 | * Returns zero if successful, or a negative error code on failure. |
| 791 | */ |
| 792 | int snd_pcm_new_internal(struct snd_card *card, const char *id, int device, |
| 793 | int playback_count, int capture_count, |
| 794 | struct snd_pcm **rpcm) |
| 795 | { |
| 796 | return _snd_pcm_new(card, id, device, playback_count, capture_count, |
| 797 | true, rpcm); |
| 798 | } |
| 799 | EXPORT_SYMBOL(snd_pcm_new_internal); |
| 800 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 801 | static void snd_pcm_free_stream(struct snd_pcm_str * pstr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 803 | struct snd_pcm_substream *substream, *substream_next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 805 | struct snd_pcm_oss_setup *setup, *setupn; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | #endif |
| 807 | substream = pstr->substream; |
| 808 | while (substream) { |
| 809 | substream_next = substream->next; |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 810 | snd_pcm_timer_done(substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | snd_pcm_substream_proc_done(substream); |
| 812 | kfree(substream); |
| 813 | substream = substream_next; |
| 814 | } |
| 815 | snd_pcm_stream_proc_done(pstr); |
| 816 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 817 | for (setup = pstr->oss.setup_list; setup; setup = setupn) { |
| 818 | setupn = setup->next; |
| 819 | kfree(setup->task_name); |
| 820 | kfree(setup); |
| 821 | } |
| 822 | #endif |
| 823 | } |
| 824 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 825 | static int snd_pcm_free(struct snd_pcm *pcm) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 826 | { |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 827 | struct snd_pcm_notify *notify; |
| 828 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 829 | if (!pcm) |
| 830 | return 0; |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 831 | list_for_each_entry(notify, &snd_pcm_notify_list, list) { |
| 832 | notify->n_unregister(pcm); |
| 833 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | if (pcm->private_free) |
| 835 | pcm->private_free(pcm); |
| 836 | snd_pcm_lib_preallocate_free_for_all(pcm); |
| 837 | snd_pcm_free_stream(&pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]); |
| 838 | snd_pcm_free_stream(&pcm->streams[SNDRV_PCM_STREAM_CAPTURE]); |
| 839 | kfree(pcm); |
| 840 | return 0; |
| 841 | } |
| 842 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 843 | static int snd_pcm_dev_free(struct snd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 845 | struct snd_pcm *pcm = device->device_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | return snd_pcm_free(pcm); |
| 847 | } |
| 848 | |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 849 | int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, |
| 850 | struct file *file, |
| 851 | struct snd_pcm_substream **rsubstream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 853 | struct snd_pcm_str * pstr; |
| 854 | struct snd_pcm_substream *substream; |
| 855 | struct snd_pcm_runtime *runtime; |
| 856 | struct snd_ctl_file *kctl; |
| 857 | struct snd_card *card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | int prefer_subdevice = -1; |
| 859 | size_t size; |
| 860 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 861 | if (snd_BUG_ON(!pcm || !rsubstream)) |
| 862 | return -ENXIO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | *rsubstream = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | pstr = &pcm->streams[stream]; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 865 | if (pstr->substream == NULL || pstr->substream_count == 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | return -ENODEV; |
| 867 | |
| 868 | card = pcm->card; |
Takashi Iwai | 399ccdc | 2008-09-25 14:51:03 +0200 | [diff] [blame] | 869 | read_lock(&card->ctl_files_rwlock); |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 870 | list_for_each_entry(kctl, &card->ctl_files, list) { |
Clemens Ladisch | 25d27ed | 2009-11-02 09:35:44 +0100 | [diff] [blame] | 871 | if (kctl->pid == task_pid(current)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | prefer_subdevice = kctl->prefer_pcm_subdevice; |
Takashi Iwai | 2529bba | 2006-08-04 12:57:19 +0200 | [diff] [blame] | 873 | if (prefer_subdevice != -1) |
| 874 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | } |
| 876 | } |
Takashi Iwai | 399ccdc | 2008-09-25 14:51:03 +0200 | [diff] [blame] | 877 | read_unlock(&card->ctl_files_rwlock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 879 | switch (stream) { |
| 880 | case SNDRV_PCM_STREAM_PLAYBACK: |
| 881 | if (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX) { |
| 882 | for (substream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream; substream; substream = substream->next) { |
| 883 | if (SUBSTREAM_BUSY(substream)) |
| 884 | return -EAGAIN; |
| 885 | } |
| 886 | } |
| 887 | break; |
| 888 | case SNDRV_PCM_STREAM_CAPTURE: |
| 889 | if (pcm->info_flags & SNDRV_PCM_INFO_HALF_DUPLEX) { |
| 890 | for (substream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream; substream; substream = substream->next) { |
| 891 | if (SUBSTREAM_BUSY(substream)) |
| 892 | return -EAGAIN; |
| 893 | } |
| 894 | } |
| 895 | break; |
| 896 | default: |
| 897 | return -EINVAL; |
| 898 | } |
| 899 | |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 900 | if (file->f_flags & O_APPEND) { |
| 901 | if (prefer_subdevice < 0) { |
| 902 | if (pstr->substream_count > 1) |
| 903 | return -EINVAL; /* must be unique */ |
| 904 | substream = pstr->substream; |
| 905 | } else { |
| 906 | for (substream = pstr->substream; substream; |
| 907 | substream = substream->next) |
| 908 | if (substream->number == prefer_subdevice) |
| 909 | break; |
| 910 | } |
| 911 | if (! substream) |
| 912 | return -ENODEV; |
| 913 | if (! SUBSTREAM_BUSY(substream)) |
| 914 | return -EBADFD; |
| 915 | substream->ref_count++; |
| 916 | *rsubstream = substream; |
| 917 | return 0; |
| 918 | } |
| 919 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | if (prefer_subdevice >= 0) { |
| 921 | for (substream = pstr->substream; substream; substream = substream->next) |
| 922 | if (!SUBSTREAM_BUSY(substream) && substream->number == prefer_subdevice) |
| 923 | goto __ok; |
| 924 | } |
| 925 | for (substream = pstr->substream; substream; substream = substream->next) |
| 926 | if (!SUBSTREAM_BUSY(substream)) |
| 927 | break; |
| 928 | __ok: |
| 929 | if (substream == NULL) |
| 930 | return -EAGAIN; |
| 931 | |
Takashi Iwai | ca2c096 | 2005-09-09 14:20:23 +0200 | [diff] [blame] | 932 | runtime = kzalloc(sizeof(*runtime), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | if (runtime == NULL) |
| 934 | return -ENOMEM; |
| 935 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 936 | size = PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 937 | runtime->status = snd_malloc_pages(size, GFP_KERNEL); |
| 938 | if (runtime->status == NULL) { |
| 939 | kfree(runtime); |
| 940 | return -ENOMEM; |
| 941 | } |
| 942 | memset((void*)runtime->status, 0, size); |
| 943 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 944 | size = PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 945 | runtime->control = snd_malloc_pages(size, GFP_KERNEL); |
| 946 | if (runtime->control == NULL) { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 947 | snd_free_pages((void*)runtime->status, |
| 948 | PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 949 | kfree(runtime); |
| 950 | return -ENOMEM; |
| 951 | } |
| 952 | memset((void*)runtime->control, 0, size); |
| 953 | |
| 954 | init_waitqueue_head(&runtime->sleep); |
Jaroslav Kysela | c91a988 | 2010-01-21 10:32:15 +0100 | [diff] [blame] | 955 | init_waitqueue_head(&runtime->tsleep); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | |
| 957 | runtime->status->state = SNDRV_PCM_STATE_OPEN; |
| 958 | |
| 959 | substream->runtime = runtime; |
| 960 | substream->private_data = pcm->private_data; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 961 | substream->ref_count = 1; |
| 962 | substream->f_flags = file->f_flags; |
Clemens Ladisch | e7373b7 | 2009-11-10 10:13:30 +0100 | [diff] [blame] | 963 | substream->pid = get_pid(task_pid(current)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | pstr->substream_opened++; |
| 965 | *rsubstream = substream; |
| 966 | return 0; |
| 967 | } |
| 968 | |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 969 | void snd_pcm_detach_substream(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 971 | struct snd_pcm_runtime *runtime; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 972 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 973 | if (PCM_RUNTIME_CHECK(substream)) |
| 974 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | if (runtime->private_free != NULL) |
| 977 | runtime->private_free(runtime); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 978 | snd_free_pages((void*)runtime->status, |
| 979 | PAGE_ALIGN(sizeof(struct snd_pcm_mmap_status))); |
| 980 | snd_free_pages((void*)runtime->control, |
| 981 | PAGE_ALIGN(sizeof(struct snd_pcm_mmap_control))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 982 | kfree(runtime->hw_constraints.rules); |
Jaroslav Kysela | 4d96eb2 | 2009-12-20 11:47:57 +0100 | [diff] [blame] | 983 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
| 984 | if (runtime->hwptr_log) |
| 985 | kfree(runtime->hwptr_log); |
| 986 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 987 | kfree(runtime); |
| 988 | substream->runtime = NULL; |
Clemens Ladisch | e7373b7 | 2009-11-10 10:13:30 +0100 | [diff] [blame] | 989 | put_pid(substream->pid); |
| 990 | substream->pid = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 991 | substream->pstr->substream_opened--; |
| 992 | } |
| 993 | |
Greg Kroah-Hartman | d80f19f | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 994 | static ssize_t show_pcm_class(struct device *dev, |
| 995 | struct device_attribute *attr, char *buf) |
Takashi Iwai | 9d19f48 | 2006-09-06 14:27:46 +0200 | [diff] [blame] | 996 | { |
| 997 | struct snd_pcm *pcm; |
| 998 | const char *str; |
| 999 | static const char *strs[SNDRV_PCM_CLASS_LAST + 1] = { |
| 1000 | [SNDRV_PCM_CLASS_GENERIC] = "generic", |
| 1001 | [SNDRV_PCM_CLASS_MULTI] = "multi", |
| 1002 | [SNDRV_PCM_CLASS_MODEM] = "modem", |
| 1003 | [SNDRV_PCM_CLASS_DIGITIZER] = "digitizer", |
| 1004 | }; |
| 1005 | |
Greg Kroah-Hartman | d80f19f | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 1006 | if (! (pcm = dev_get_drvdata(dev)) || |
Takashi Iwai | 9d19f48 | 2006-09-06 14:27:46 +0200 | [diff] [blame] | 1007 | pcm->dev_class > SNDRV_PCM_CLASS_LAST) |
| 1008 | str = "none"; |
| 1009 | else |
| 1010 | str = strs[pcm->dev_class]; |
| 1011 | return snprintf(buf, PAGE_SIZE, "%s\n", str); |
| 1012 | } |
| 1013 | |
Greg Kroah-Hartman | d80f19f | 2006-08-07 22:19:37 -0700 | [diff] [blame] | 1014 | static struct device_attribute pcm_attrs = |
Takashi Iwai | 9d19f48 | 2006-09-06 14:27:46 +0200 | [diff] [blame] | 1015 | __ATTR(pcm_class, S_IRUGO, show_pcm_class, NULL); |
| 1016 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1017 | static int snd_pcm_dev_register(struct snd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | { |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1019 | int cidx, err; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1020 | struct snd_pcm_substream *substream; |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 1021 | struct snd_pcm_notify *notify; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | char str[16]; |
Julia Lawall | 4b3be6a | 2009-10-17 08:33:22 +0200 | [diff] [blame] | 1023 | struct snd_pcm *pcm; |
Johannes Berg | c78085f | 2006-10-05 15:06:34 +0200 | [diff] [blame] | 1024 | struct device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1025 | |
Julia Lawall | 4b3be6a | 2009-10-17 08:33:22 +0200 | [diff] [blame] | 1026 | if (snd_BUG_ON(!device || !device->device_data)) |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1027 | return -ENXIO; |
Julia Lawall | 4b3be6a | 2009-10-17 08:33:22 +0200 | [diff] [blame] | 1028 | pcm = device->device_data; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1029 | mutex_lock(®ister_mutex); |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 1030 | err = snd_pcm_add(pcm); |
| 1031 | if (err) { |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1032 | mutex_unlock(®ister_mutex); |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 1033 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | for (cidx = 0; cidx < 2; cidx++) { |
| 1036 | int devtype = -1; |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 1037 | if (pcm->streams[cidx].substream == NULL || pcm->internal) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1038 | continue; |
| 1039 | switch (cidx) { |
| 1040 | case SNDRV_PCM_STREAM_PLAYBACK: |
| 1041 | sprintf(str, "pcmC%iD%ip", pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK; |
| 1043 | break; |
| 1044 | case SNDRV_PCM_STREAM_CAPTURE: |
| 1045 | sprintf(str, "pcmC%iD%ic", pcm->card->number, pcm->device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1046 | devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE; |
| 1047 | break; |
| 1048 | } |
Johannes Berg | c78085f | 2006-10-05 15:06:34 +0200 | [diff] [blame] | 1049 | /* device pointer to use, pcm->dev takes precedence if |
| 1050 | * it is assigned, otherwise fall back to card's device |
| 1051 | * if possible */ |
| 1052 | dev = pcm->dev; |
| 1053 | if (!dev) |
Takashi Iwai | c2902c8 | 2007-02-09 16:25:48 +0100 | [diff] [blame] | 1054 | dev = snd_card_get_device_link(pcm->card); |
Johannes Berg | c78085f | 2006-10-05 15:06:34 +0200 | [diff] [blame] | 1055 | /* register pcm */ |
| 1056 | err = snd_register_device_for_dev(devtype, pcm->card, |
| 1057 | pcm->device, |
| 1058 | &snd_pcm_f_ops[cidx], |
| 1059 | pcm, str, dev); |
| 1060 | if (err < 0) { |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1061 | list_del(&pcm->list); |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1062 | mutex_unlock(®ister_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | return err; |
| 1064 | } |
Takashi Iwai | 9d19f48 | 2006-09-06 14:27:46 +0200 | [diff] [blame] | 1065 | snd_add_device_sysfs_file(devtype, pcm->card, pcm->device, |
| 1066 | &pcm_attrs); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1067 | for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) |
| 1068 | snd_pcm_timer_init(substream); |
| 1069 | } |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 1070 | |
| 1071 | list_for_each_entry(notify, &snd_pcm_notify_list, list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1072 | notify->n_register(pcm); |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 1073 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1074 | mutex_unlock(®ister_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1075 | return 0; |
| 1076 | } |
| 1077 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1078 | static int snd_pcm_dev_disconnect(struct snd_device *device) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1079 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1080 | struct snd_pcm *pcm = device->device_data; |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 1081 | struct snd_pcm_notify *notify; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1082 | struct snd_pcm_substream *substream; |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 1083 | int cidx, devtype; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1085 | mutex_lock(®ister_mutex); |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 1086 | if (list_empty(&pcm->list)) |
| 1087 | goto unlock; |
| 1088 | |
Takashi Iwai | 9b0573c | 2012-10-12 15:07:34 +0200 | [diff] [blame] | 1089 | mutex_lock(&pcm->open_mutex); |
Takashi Iwai | 0914f79 | 2012-10-16 16:43:39 +0200 | [diff] [blame] | 1090 | wake_up(&pcm->open_wait); |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1091 | list_del_init(&pcm->list); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | for (cidx = 0; cidx < 2; cidx++) |
Takashi Iwai | 9b0573c | 2012-10-12 15:07:34 +0200 | [diff] [blame] | 1093 | for (substream = pcm->streams[cidx].substream; substream; substream = substream->next) { |
| 1094 | snd_pcm_stream_lock_irq(substream); |
Takashi Iwai | 0914f79 | 2012-10-16 16:43:39 +0200 | [diff] [blame] | 1095 | if (substream->runtime) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | substream->runtime->status->state = SNDRV_PCM_STATE_DISCONNECTED; |
Takashi Iwai | 0914f79 | 2012-10-16 16:43:39 +0200 | [diff] [blame] | 1097 | wake_up(&substream->runtime->sleep); |
| 1098 | wake_up(&substream->runtime->tsleep); |
| 1099 | } |
Takashi Iwai | 9b0573c | 2012-10-12 15:07:34 +0200 | [diff] [blame] | 1100 | snd_pcm_stream_unlock_irq(substream); |
| 1101 | } |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 1102 | list_for_each_entry(notify, &snd_pcm_notify_list, list) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1103 | notify->n_disconnect(pcm); |
| 1104 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1105 | for (cidx = 0; cidx < 2; cidx++) { |
| 1106 | devtype = -1; |
| 1107 | switch (cidx) { |
| 1108 | case SNDRV_PCM_STREAM_PLAYBACK: |
| 1109 | devtype = SNDRV_DEVICE_TYPE_PCM_PLAYBACK; |
| 1110 | break; |
| 1111 | case SNDRV_PCM_STREAM_CAPTURE: |
| 1112 | devtype = SNDRV_DEVICE_TYPE_PCM_CAPTURE; |
| 1113 | break; |
| 1114 | } |
| 1115 | snd_unregister_device(devtype, pcm->card, pcm->device); |
Takashi Iwai | 2d3391e | 2012-07-27 18:27:00 +0200 | [diff] [blame] | 1116 | if (pcm->streams[cidx].chmap_kctl) { |
| 1117 | snd_ctl_remove(pcm->card, pcm->streams[cidx].chmap_kctl); |
| 1118 | pcm->streams[cidx].chmap_kctl = NULL; |
| 1119 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | } |
Takashi Iwai | 9b0573c | 2012-10-12 15:07:34 +0200 | [diff] [blame] | 1121 | mutex_unlock(&pcm->open_mutex); |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 1122 | unlock: |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1123 | mutex_unlock(®ister_mutex); |
Takashi Iwai | c461482 | 2006-06-23 14:38:23 +0200 | [diff] [blame] | 1124 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1125 | } |
| 1126 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1127 | int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | { |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 1129 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1130 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1131 | if (snd_BUG_ON(!notify || |
| 1132 | !notify->n_register || |
| 1133 | !notify->n_unregister || |
| 1134 | !notify->n_disconnect)) |
| 1135 | return -EINVAL; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1136 | mutex_lock(®ister_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1137 | if (nfree) { |
| 1138 | list_del(¬ify->list); |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 1139 | list_for_each_entry(pcm, &snd_pcm_devices, list) |
| 1140 | notify->n_unregister(pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1141 | } else { |
| 1142 | list_add_tail(¬ify->list, &snd_pcm_notify_list); |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 1143 | list_for_each_entry(pcm, &snd_pcm_devices, list) |
| 1144 | notify->n_register(pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1145 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1146 | mutex_unlock(®ister_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1147 | return 0; |
| 1148 | } |
| 1149 | |
Takashi Iwai | e88e8ae6 | 2006-04-28 15:13:40 +0200 | [diff] [blame] | 1150 | EXPORT_SYMBOL(snd_pcm_notify); |
| 1151 | |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 1152 | #ifdef CONFIG_PROC_FS |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1153 | /* |
| 1154 | * Info interface |
| 1155 | */ |
| 1156 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1157 | static void snd_pcm_proc_read(struct snd_info_entry *entry, |
| 1158 | struct snd_info_buffer *buffer) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1160 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1161 | |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1162 | mutex_lock(®ister_mutex); |
Johannes Berg | 9244b2c | 2006-10-05 16:02:22 +0200 | [diff] [blame] | 1163 | list_for_each_entry(pcm, &snd_pcm_devices, list) { |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 1164 | snd_iprintf(buffer, "%02i-%02i: %s : %s", |
| 1165 | pcm->card->number, pcm->device, pcm->id, pcm->name); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1166 | if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1167 | snd_iprintf(buffer, " : playback %i", |
| 1168 | pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1170 | snd_iprintf(buffer, " : capture %i", |
| 1171 | pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1172 | snd_iprintf(buffer, "\n"); |
| 1173 | } |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 1174 | mutex_unlock(®ister_mutex); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | } |
| 1176 | |
Takashi Iwai | 6581f4e | 2006-05-17 17:14:51 +0200 | [diff] [blame] | 1177 | static struct snd_info_entry *snd_pcm_proc_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1178 | |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 1179 | static void snd_pcm_proc_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1180 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1181 | struct snd_info_entry *entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1182 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | if ((entry = snd_info_create_module_entry(THIS_MODULE, "pcm", NULL)) != NULL) { |
Takashi Iwai | bf85020 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1184 | snd_info_set_text_ops(entry, NULL, snd_pcm_proc_read); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1185 | if (snd_info_register(entry) < 0) { |
| 1186 | snd_info_free_entry(entry); |
| 1187 | entry = NULL; |
| 1188 | } |
| 1189 | } |
| 1190 | snd_pcm_proc_entry = entry; |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 1191 | } |
| 1192 | |
| 1193 | static void snd_pcm_proc_done(void) |
| 1194 | { |
Takashi Iwai | 746d4a0 | 2006-06-23 14:37:59 +0200 | [diff] [blame] | 1195 | snd_info_free_entry(snd_pcm_proc_entry); |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | #else /* !CONFIG_PROC_FS */ |
| 1199 | #define snd_pcm_proc_init() |
| 1200 | #define snd_pcm_proc_done() |
| 1201 | #endif /* CONFIG_PROC_FS */ |
| 1202 | |
| 1203 | |
| 1204 | /* |
| 1205 | * ENTRY functions |
| 1206 | */ |
| 1207 | |
| 1208 | static int __init alsa_pcm_init(void) |
| 1209 | { |
| 1210 | snd_ctl_register_ioctl(snd_pcm_control_ioctl); |
| 1211 | snd_ctl_register_ioctl_compat(snd_pcm_control_ioctl); |
| 1212 | snd_pcm_proc_init(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1213 | return 0; |
| 1214 | } |
| 1215 | |
| 1216 | static void __exit alsa_pcm_exit(void) |
| 1217 | { |
| 1218 | snd_ctl_unregister_ioctl(snd_pcm_control_ioctl); |
| 1219 | snd_ctl_unregister_ioctl_compat(snd_pcm_control_ioctl); |
Takashi Iwai | e28563c | 2005-12-01 10:42:42 +0100 | [diff] [blame] | 1220 | snd_pcm_proc_done(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1221 | } |
| 1222 | |
| 1223 | module_init(alsa_pcm_init) |
| 1224 | module_exit(alsa_pcm_exit) |