Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Google, Inc. |
| 3 | * Copyright (C) 2009 HTC Corporation |
Mohammad Johny Shaik | 4c1a092 | 2013-10-24 13:40:08 -0700 | [diff] [blame] | 4 | * Copyright (c) 2010-2013, The Linux Foundation. All rights reserved. |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 5 | * |
| 6 | * This software is licensed under the terms of the GNU General Public |
| 7 | * License version 2, as published by the Free Software Foundation, and |
| 8 | * may be copied, distributed, and modified under those terms. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/fs.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/miscdevice.h> |
| 20 | #include <linux/mutex.h> |
| 21 | #include <linux/sched.h> |
| 22 | #include <linux/uaccess.h> |
| 23 | #include <linux/spinlock.h> |
| 24 | #include <linux/slab.h> |
| 25 | #include <linux/wait.h> |
| 26 | #include <linux/msm_audio.h> |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 27 | #include <linux/pm_qos.h> |
| 28 | |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 29 | #include <asm/atomic.h> |
| 30 | #include <mach/debug_mm.h> |
| 31 | #include <mach/qdsp6v2/audio_dev_ctl.h> |
| 32 | #include <sound/q6asm.h> |
| 33 | #include <sound/apr_audio.h> |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 34 | #include <linux/wakelock.h> |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 35 | #include <mach/cpuidle.h> |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 36 | |
| 37 | #define MAX_BUF 4 |
| 38 | #define BUFSZ (480 * 8) |
| 39 | #define BUFFER_SIZE_MULTIPLE 4 |
| 40 | #define MIN_BUFFER_SIZE 160 |
| 41 | |
| 42 | #define VOC_REC_NONE 0xFF |
| 43 | |
| 44 | struct pcm { |
| 45 | struct mutex lock; |
| 46 | struct mutex read_lock; |
| 47 | wait_queue_head_t wait; |
| 48 | spinlock_t dsp_lock; |
| 49 | struct audio_client *ac; |
| 50 | uint32_t sample_rate; |
| 51 | uint32_t channel_count; |
| 52 | uint32_t buffer_size; |
| 53 | uint32_t buffer_count; |
| 54 | uint32_t rec_mode; |
| 55 | uint32_t in_frame_info[MAX_BUF][2]; |
| 56 | atomic_t in_count; |
| 57 | atomic_t in_enabled; |
| 58 | atomic_t in_opened; |
| 59 | atomic_t in_stopped; |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 60 | struct wake_lock wakelock; |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 61 | struct pm_qos_request pm_qos_req; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 62 | }; |
| 63 | |
| 64 | static void pcm_in_get_dsp_buffers(struct pcm*, |
| 65 | uint32_t token, uint32_t *payload); |
| 66 | |
| 67 | void pcm_in_cb(uint32_t opcode, uint32_t token, |
| 68 | uint32_t *payload, void *priv) |
| 69 | { |
| 70 | struct pcm *pcm = (struct pcm *) priv; |
| 71 | unsigned long flags; |
| 72 | |
| 73 | spin_lock_irqsave(&pcm->dsp_lock, flags); |
| 74 | switch (opcode) { |
| 75 | case ASM_DATA_EVENT_READ_DONE: |
| 76 | pcm_in_get_dsp_buffers(pcm, token, payload); |
| 77 | break; |
Laxminath Kasam | 692c654 | 2012-02-21 11:17:47 +0530 | [diff] [blame] | 78 | case RESET_EVENTS: |
| 79 | reset_device(); |
| 80 | break; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 81 | default: |
| 82 | break; |
| 83 | } |
| 84 | spin_unlock_irqrestore(&pcm->dsp_lock, flags); |
| 85 | } |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 86 | static void pcm_in_prevent_sleep(struct pcm *audio) |
| 87 | { |
| 88 | pr_debug("%s:\n", __func__); |
| 89 | wake_lock(&audio->wakelock); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 90 | pm_qos_update_request(&audio->pm_qos_req, |
| 91 | msm_cpuidle_get_deep_idle_latency()); |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 92 | } |
| 93 | |
| 94 | static void pcm_in_allow_sleep(struct pcm *audio) |
| 95 | { |
| 96 | pr_debug("%s:\n", __func__); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 97 | pm_qos_update_request(&audio->pm_qos_req, PM_QOS_DEFAULT_VALUE); |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 98 | wake_unlock(&audio->wakelock); |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 99 | } |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 100 | |
| 101 | static void pcm_in_get_dsp_buffers(struct pcm *pcm, |
| 102 | uint32_t token, uint32_t *payload) |
| 103 | { |
| 104 | pcm->in_frame_info[token][0] = payload[7]; |
| 105 | pcm->in_frame_info[token][1] = payload[3]; |
| 106 | if (atomic_read(&pcm->in_count) <= pcm->buffer_count) |
| 107 | atomic_inc(&pcm->in_count); |
| 108 | wake_up(&pcm->wait); |
| 109 | } |
| 110 | |
| 111 | static int pcm_in_enable(struct pcm *pcm) |
| 112 | { |
| 113 | if (atomic_read(&pcm->in_enabled)) |
| 114 | return 0; |
| 115 | return q6asm_run(pcm->ac, 0, 0, 0); |
| 116 | } |
| 117 | |
| 118 | static int pcm_in_disable(struct pcm *pcm) |
| 119 | { |
| 120 | int rc = 0; |
| 121 | |
| 122 | if (atomic_read(&pcm->in_opened)) { |
| 123 | atomic_set(&pcm->in_enabled, 0); |
| 124 | atomic_set(&pcm->in_opened, 0); |
| 125 | rc = q6asm_cmd(pcm->ac, CMD_CLOSE); |
| 126 | |
| 127 | atomic_set(&pcm->in_stopped, 1); |
| 128 | memset(pcm->in_frame_info, 0, |
| 129 | sizeof(char) * pcm->buffer_count * 2); |
| 130 | wake_up(&pcm->wait); |
| 131 | } |
| 132 | return rc; |
| 133 | } |
| 134 | |
| 135 | static int config(struct pcm *pcm) |
| 136 | { |
| 137 | int rc = 0; |
| 138 | |
| 139 | pr_debug("%s: pcm prefill, buffer_size = %d\n", __func__, |
| 140 | pcm->buffer_size); |
| 141 | rc = q6asm_audio_client_buf_alloc(OUT, pcm->ac, |
| 142 | pcm->buffer_size, pcm->buffer_count); |
| 143 | if (rc < 0) { |
| 144 | pr_err("Audio Start: Buffer Allocation failed \ |
| 145 | rc = %d\n", rc); |
| 146 | goto fail; |
| 147 | } |
| 148 | |
| 149 | rc = q6asm_enc_cfg_blk_pcm(pcm->ac, pcm->sample_rate, |
| 150 | pcm->channel_count); |
| 151 | if (rc < 0) { |
| 152 | pr_err("%s: cmd media format block failed", __func__); |
| 153 | goto fail; |
| 154 | } |
| 155 | fail: |
| 156 | return rc; |
| 157 | } |
| 158 | |
| 159 | static long pcm_in_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 160 | { |
| 161 | struct pcm *pcm = file->private_data; |
| 162 | int rc = 0; |
| 163 | |
| 164 | mutex_lock(&pcm->lock); |
| 165 | switch (cmd) { |
| 166 | case AUDIO_SET_VOLUME: |
| 167 | break; |
| 168 | case AUDIO_GET_STATS: { |
| 169 | struct msm_audio_stats stats; |
| 170 | memset(&stats, 0, sizeof(stats)); |
| 171 | if (copy_to_user((void *) arg, &stats, sizeof(stats))) |
| 172 | rc = -EFAULT; |
| 173 | break; |
| 174 | } |
| 175 | case AUDIO_START: { |
| 176 | int cnt = 0; |
| 177 | if (atomic_read(&pcm->in_enabled)) { |
| 178 | pr_info("%s:AUDIO_START already over\n", __func__); |
| 179 | rc = 0; |
| 180 | break; |
| 181 | } |
| 182 | rc = config(pcm); |
| 183 | if (rc) { |
| 184 | pr_err("%s: IN Configuration failed\n", __func__); |
| 185 | rc = -EFAULT; |
| 186 | break; |
| 187 | } |
| 188 | |
| 189 | rc = pcm_in_enable(pcm); |
| 190 | if (rc) { |
| 191 | pr_err("%s: In Enable failed\n", __func__); |
| 192 | rc = -EFAULT; |
| 193 | break; |
| 194 | } |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 195 | pcm_in_prevent_sleep(pcm); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 196 | atomic_set(&pcm->in_enabled, 1); |
| 197 | |
| 198 | while (cnt++ < pcm->buffer_count) |
| 199 | q6asm_read(pcm->ac); |
| 200 | pr_info("%s: AUDIO_START session id[%d]\n", __func__, |
| 201 | pcm->ac->session); |
| 202 | |
| 203 | if (pcm->rec_mode != VOC_REC_NONE) |
| 204 | msm_enable_incall_recording(pcm->ac->session, |
| 205 | pcm->rec_mode, pcm->sample_rate, pcm->channel_count); |
| 206 | |
| 207 | break; |
| 208 | } |
| 209 | case AUDIO_GET_SESSION_ID: { |
| 210 | if (copy_to_user((void *) arg, &pcm->ac->session, |
| 211 | sizeof(unsigned short))) |
| 212 | rc = -EFAULT; |
| 213 | break; |
| 214 | } |
| 215 | case AUDIO_STOP: |
| 216 | break; |
| 217 | case AUDIO_FLUSH: |
| 218 | break; |
| 219 | case AUDIO_SET_CONFIG: { |
| 220 | struct msm_audio_config config; |
| 221 | |
| 222 | if (copy_from_user(&config, (void *) arg, sizeof(config))) { |
| 223 | rc = -EFAULT; |
| 224 | break; |
| 225 | } |
| 226 | pr_debug("%s: SET_CONFIG: buffer_size:%d channel_count:%d" |
| 227 | "sample_rate:%d, buffer_count:%d\n", __func__, |
| 228 | config.buffer_size, config.channel_count, |
| 229 | config.sample_rate, config.buffer_count); |
| 230 | |
| 231 | if (!config.channel_count || config.channel_count > 2) { |
| 232 | rc = -EINVAL; |
| 233 | break; |
| 234 | } |
| 235 | |
| 236 | if (config.sample_rate < 8000 || config.sample_rate > 48000) { |
| 237 | rc = -EINVAL; |
| 238 | break; |
| 239 | } |
| 240 | |
| 241 | if ((config.buffer_size % (config.channel_count * |
| 242 | BUFFER_SIZE_MULTIPLE)) || |
| 243 | (config.buffer_size < MIN_BUFFER_SIZE)) { |
| 244 | pr_err("%s: Buffer Size should be multiple of " |
| 245 | "[4 * no. of channels] and greater than 160\n", |
| 246 | __func__); |
| 247 | rc = -EINVAL; |
| 248 | break; |
| 249 | } |
| 250 | |
| 251 | pcm->sample_rate = config.sample_rate; |
| 252 | pcm->channel_count = config.channel_count; |
| 253 | pcm->buffer_size = config.buffer_size; |
| 254 | pcm->buffer_count = config.buffer_count; |
| 255 | break; |
| 256 | } |
| 257 | case AUDIO_GET_CONFIG: { |
| 258 | struct msm_audio_config config; |
Mohammad Johny Shaik | 4c1a092 | 2013-10-24 13:40:08 -0700 | [diff] [blame] | 259 | memset(&config, 0, sizeof(config)); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 260 | config.buffer_size = pcm->buffer_size; |
| 261 | config.buffer_count = pcm->buffer_count; |
| 262 | config.sample_rate = pcm->sample_rate; |
| 263 | config.channel_count = pcm->channel_count; |
| 264 | config.unused[0] = 0; |
| 265 | config.unused[1] = 0; |
| 266 | config.unused[2] = 0; |
| 267 | if (copy_to_user((void *) arg, &config, sizeof(config))) |
| 268 | rc = -EFAULT; |
| 269 | break; |
| 270 | } |
| 271 | case AUDIO_ENABLE_AUDPRE: { |
| 272 | |
| 273 | uint16_t enable_mask; |
| 274 | |
| 275 | if (copy_from_user(&enable_mask, (void *) arg, |
| 276 | sizeof(enable_mask))) { |
| 277 | rc = -EFAULT; |
| 278 | break; |
| 279 | } |
| 280 | if (enable_mask & FLUENCE_ENABLE) |
| 281 | rc = auddev_cfg_tx_copp_topology(pcm->ac->session, |
| 282 | VPM_TX_DM_FLUENCE_COPP_TOPOLOGY); |
| 283 | else |
| 284 | rc = auddev_cfg_tx_copp_topology(pcm->ac->session, |
| 285 | DEFAULT_COPP_TOPOLOGY); |
| 286 | break; |
| 287 | } |
| 288 | |
| 289 | case AUDIO_SET_INCALL: { |
| 290 | if (copy_from_user(&pcm->rec_mode, |
| 291 | (void *) arg, |
| 292 | sizeof(pcm->rec_mode))) { |
| 293 | rc = -EFAULT; |
| 294 | pr_err("%s: Error copying in-call mode\n", __func__); |
| 295 | break; |
| 296 | } |
| 297 | |
| 298 | if (pcm->rec_mode != VOC_REC_UPLINK && |
| 299 | pcm->rec_mode != VOC_REC_DOWNLINK && |
| 300 | pcm->rec_mode != VOC_REC_BOTH) { |
| 301 | rc = -EINVAL; |
| 302 | pcm->rec_mode = VOC_REC_NONE; |
| 303 | |
| 304 | pr_err("%s: Invalid %d in-call rec_mode\n", |
| 305 | __func__, pcm->rec_mode); |
| 306 | break; |
| 307 | } |
| 308 | |
| 309 | pr_debug("%s: In-call rec_mode %d\n", __func__, pcm->rec_mode); |
| 310 | break; |
| 311 | } |
| 312 | |
| 313 | default: |
| 314 | rc = -EINVAL; |
| 315 | break; |
| 316 | } |
| 317 | mutex_unlock(&pcm->lock); |
| 318 | return rc; |
| 319 | } |
| 320 | |
| 321 | static int pcm_in_open(struct inode *inode, struct file *file) |
| 322 | { |
| 323 | struct pcm *pcm; |
| 324 | int rc = 0; |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 325 | char name[24]; |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 326 | |
| 327 | pcm = kzalloc(sizeof(struct pcm), GFP_KERNEL); |
| 328 | if (!pcm) |
| 329 | return -ENOMEM; |
| 330 | |
| 331 | pcm->channel_count = 1; |
| 332 | pcm->sample_rate = 8000; |
| 333 | pcm->buffer_size = BUFSZ; |
| 334 | pcm->buffer_count = MAX_BUF; |
| 335 | |
| 336 | pcm->ac = q6asm_audio_client_alloc((app_cb)pcm_in_cb, (void *)pcm); |
| 337 | if (!pcm->ac) { |
| 338 | pr_err("%s: Could not allocate memory\n", __func__); |
| 339 | rc = -ENOMEM; |
| 340 | goto fail; |
| 341 | } |
| 342 | |
| 343 | mutex_init(&pcm->lock); |
| 344 | mutex_init(&pcm->read_lock); |
| 345 | spin_lock_init(&pcm->dsp_lock); |
| 346 | init_waitqueue_head(&pcm->wait); |
| 347 | |
| 348 | rc = q6asm_open_read(pcm->ac, FORMAT_LINEAR_PCM); |
| 349 | if (rc < 0) { |
| 350 | pr_err("%s: Cmd Open Failed\n", __func__); |
| 351 | goto fail; |
| 352 | } |
| 353 | |
| 354 | atomic_set(&pcm->in_stopped, 0); |
| 355 | atomic_set(&pcm->in_enabled, 0); |
| 356 | atomic_set(&pcm->in_count, 0); |
| 357 | atomic_set(&pcm->in_opened, 1); |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 358 | snprintf(name, sizeof name, "pcm_in_%x", pcm->ac->session); |
| 359 | wake_lock_init(&pcm->wakelock, WAKE_LOCK_SUSPEND, name); |
| 360 | snprintf(name, sizeof name, "pcm_in_idle_%x", pcm->ac->session); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 361 | pm_qos_add_request(&pcm->pm_qos_req, PM_QOS_CPU_DMA_LATENCY, |
| 362 | PM_QOS_DEFAULT_VALUE); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 363 | |
| 364 | pcm->rec_mode = VOC_REC_NONE; |
| 365 | |
| 366 | file->private_data = pcm; |
| 367 | pr_info("%s: pcm in open session id[%d]\n", __func__, pcm->ac->session); |
| 368 | return 0; |
| 369 | fail: |
| 370 | if (pcm->ac) |
| 371 | q6asm_audio_client_free(pcm->ac); |
| 372 | kfree(pcm); |
| 373 | return rc; |
| 374 | } |
| 375 | |
| 376 | static ssize_t pcm_in_read(struct file *file, char __user *buf, |
| 377 | size_t count, loff_t *pos) |
| 378 | { |
| 379 | struct pcm *pcm = file->private_data; |
| 380 | const char __user *start = buf; |
| 381 | void *data; |
| 382 | uint32_t offset = 0; |
| 383 | uint32_t size = 0; |
| 384 | uint32_t idx; |
| 385 | int rc = 0; |
| 386 | int len = 0; |
| 387 | |
| 388 | if (!atomic_read(&pcm->in_enabled)) |
| 389 | return -EFAULT; |
| 390 | mutex_lock(&pcm->read_lock); |
| 391 | while (count > 0) { |
| 392 | rc = wait_event_timeout(pcm->wait, |
| 393 | (atomic_read(&pcm->in_count) || |
| 394 | atomic_read(&pcm->in_stopped)), 5 * HZ); |
| 395 | if (!rc) { |
| 396 | pr_err("%s: wait_event_timeout failed\n", __func__); |
| 397 | goto fail; |
| 398 | } |
| 399 | |
| 400 | if (atomic_read(&pcm->in_stopped) && |
| 401 | !atomic_read(&pcm->in_count)) { |
| 402 | mutex_unlock(&pcm->read_lock); |
| 403 | return 0; |
| 404 | } |
| 405 | |
| 406 | data = q6asm_is_cpu_buf_avail(OUT, pcm->ac, &size, &idx); |
| 407 | if (count >= size) |
| 408 | len = size; |
| 409 | else { |
| 410 | len = count; |
| 411 | pr_err("%s: short read data[%p]bytesavail[%d]" |
| 412 | "bytesrequest[%d]" |
| 413 | "bytesrejected%d]\n",\ |
| 414 | __func__, data, size, |
| 415 | count, (size - count)); |
| 416 | } |
| 417 | if ((len) && data) { |
| 418 | offset = pcm->in_frame_info[idx][1]; |
| 419 | if (copy_to_user(buf, data+offset, len)) { |
| 420 | pr_err("%s copy_to_user failed len[%d]\n", |
| 421 | __func__, len); |
| 422 | rc = -EFAULT; |
| 423 | goto fail; |
| 424 | } |
| 425 | count -= len; |
| 426 | buf += len; |
| 427 | } |
| 428 | atomic_dec(&pcm->in_count); |
| 429 | memset(&pcm->in_frame_info[idx], 0, |
| 430 | sizeof(uint32_t) * 2); |
| 431 | |
| 432 | rc = q6asm_read(pcm->ac); |
| 433 | if (rc < 0) { |
| 434 | pr_err("%s q6asm_read fail\n", __func__); |
| 435 | goto fail; |
| 436 | } |
| 437 | rmb(); |
| 438 | break; |
| 439 | } |
| 440 | rc = buf-start; |
| 441 | fail: |
| 442 | mutex_unlock(&pcm->read_lock); |
| 443 | return rc; |
| 444 | } |
| 445 | |
| 446 | static int pcm_in_release(struct inode *inode, struct file *file) |
| 447 | { |
| 448 | int rc = 0; |
| 449 | struct pcm *pcm = file->private_data; |
| 450 | |
| 451 | pr_info("[%s:%s] release session id[%d]\n", __MM_FILE__, |
| 452 | __func__, pcm->ac->session); |
| 453 | mutex_lock(&pcm->lock); |
| 454 | |
| 455 | if ((pcm->rec_mode != VOC_REC_NONE) && atomic_read(&pcm->in_enabled)) { |
| 456 | msm_disable_incall_recording(pcm->ac->session, pcm->rec_mode); |
| 457 | |
| 458 | pcm->rec_mode = VOC_REC_NONE; |
| 459 | } |
| 460 | |
| 461 | /* remove this session from topology list */ |
| 462 | auddev_cfg_tx_copp_topology(pcm->ac->session, |
| 463 | DEFAULT_COPP_TOPOLOGY); |
| 464 | mutex_unlock(&pcm->lock); |
| 465 | |
| 466 | rc = pcm_in_disable(pcm); |
| 467 | msm_clear_session_id(pcm->ac->session); |
| 468 | q6asm_audio_client_free(pcm->ac); |
Bharath Ramachandramurthy | 4613ce4 | 2011-08-23 14:39:44 -0700 | [diff] [blame] | 469 | pcm_in_allow_sleep(pcm); |
| 470 | wake_lock_destroy(&pcm->wakelock); |
Stephen Boyd | 2fcabf9 | 2012-05-30 10:41:11 -0700 | [diff] [blame] | 471 | pm_qos_remove_request(&pcm->pm_qos_req); |
Bryan Huntsman | 3f2bc4d | 2011-08-16 17:27:22 -0700 | [diff] [blame] | 472 | kfree(pcm); |
| 473 | return rc; |
| 474 | } |
| 475 | |
| 476 | static const struct file_operations pcm_in_fops = { |
| 477 | .owner = THIS_MODULE, |
| 478 | .open = pcm_in_open, |
| 479 | .read = pcm_in_read, |
| 480 | .release = pcm_in_release, |
| 481 | .unlocked_ioctl = pcm_in_ioctl, |
| 482 | }; |
| 483 | |
| 484 | struct miscdevice pcm_in_misc = { |
| 485 | .minor = MISC_DYNAMIC_MINOR, |
| 486 | .name = "msm_pcm_in", |
| 487 | .fops = &pcm_in_fops, |
| 488 | }; |
| 489 | |
| 490 | static int __init pcm_in_init(void) |
| 491 | { |
| 492 | return misc_register(&pcm_in_misc); |
| 493 | } |
| 494 | |
| 495 | device_initcall(pcm_in_init); |