drivers/misc/qcom/qdsp6v2/audio_amrwbplus.c

   1 /* amr-wbplus audio output device
   2  *
   3  * Copyright (C) 2008 Google, Inc.
   4  * Copyright (C) 2008 HTC Corporation
   5  * Copyright (c) 2010-2016, The Linux Foundation. All rights reserved.
   6  *
   7  * This software is licensed under the terms of the GNU General Public
   8  * License version 2, as published by the Free Software Foundation, and
   9  * may be copied, distributed, and modified under those terms.
  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  */
  17 #include <linux/msm_audio_amrwbplus.h>
  18 #include <linux/compat.h>
  19 #include "audio_utils_aio.h"
  20
  21 static struct miscdevice audio_amrwbplus_misc;
  22 static struct ws_mgr audio_amrwbplus_ws_mgr;
  23
  24 #ifdef CONFIG_DEBUG_FS
  25 static const struct file_operations audio_amrwbplus_debug_fops = {
  26         .read = audio_aio_debug_read,
  27         .open = audio_aio_debug_open,
  28 };
  29 static void config_debug_fs(struct q6audio_aio *audio)
  30 {
  31         if (audio != NULL) {
  32                 char name[sizeof("msm_amrwbplus_") + 5];
  33                 snprintf(name, sizeof(name), "msm_amrwbplus_%04x",
  34                         audio->ac->session);
  35                 audio->dentry = debugfs_create_file(name, S_IFREG | S_IRUGO,
  36                                                 NULL, (void *)audio,
  37                                                 &audio_amrwbplus_debug_fops);
  38                 if (IS_ERR(audio->dentry))
  39                         pr_debug("debugfs_create_file failed\n");
  40         }
  41 }
  42 #else
  43 static void config_debug_fs(struct q6audio_aio *audio)
  44 {
  45 }
  46 #endif
  47
  48 static long audio_ioctl_shared(struct file *file, unsigned int cmd,
  49                                         void *arg)
  50 {
  51         struct asm_amrwbplus_cfg q6_amrwbplus_cfg;
  52         struct msm_audio_amrwbplus_config_v2 *amrwbplus_drv_config;
  53         struct q6audio_aio *audio = file->private_data;
  54         int rc = 0;
  55
  56         switch (cmd) {
  57         case AUDIO_START:
  58                 pr_err("%s[%pK]: AUDIO_START session_id[%d]\n", __func__,
  59                         audio, audio->ac->session);
  60                 if (audio->feedback == NON_TUNNEL_MODE) {
  61                         /* Configure PCM output block */
  62                         rc = q6asm_enc_cfg_blk_pcm(audio->ac,
  63                         audio->pcm_cfg.sample_rate,
  64                         audio->pcm_cfg.channel_count);
  65                         if (rc < 0) {
  66                                 pr_err("pcm output block config failed\n");
  67                                 break;
  68                         }
  69                 }
  70                 amrwbplus_drv_config =
  71                 (struct msm_audio_amrwbplus_config_v2 *)audio->codec_cfg;
  72
  73                 q6_amrwbplus_cfg.size_bytes     =
  74                         amrwbplus_drv_config->size_bytes;
  75                 q6_amrwbplus_cfg.version        =
  76                         amrwbplus_drv_config->version;
  77                 q6_amrwbplus_cfg.num_channels   =
  78                         amrwbplus_drv_config->num_channels;
  79                 q6_amrwbplus_cfg.amr_band_mode  =
  80                         amrwbplus_drv_config->amr_band_mode;
  81                 q6_amrwbplus_cfg.amr_dtx_mode   =
  82                         amrwbplus_drv_config->amr_dtx_mode;
  83                 q6_amrwbplus_cfg.amr_frame_fmt  =
  84                         amrwbplus_drv_config->amr_frame_fmt;
  85                 q6_amrwbplus_cfg.amr_lsf_idx    =
  86                         amrwbplus_drv_config->amr_lsf_idx;
  87
  88                 rc = q6asm_media_format_block_amrwbplus(audio->ac,
  89                                                         &q6_amrwbplus_cfg);
  90                 if (rc < 0) {
  91                         pr_err("q6asm_media_format_block_amrwb+ failed...\n");
  92                         break;
  93                 }
  94                 rc = audio_aio_enable(audio);
  95                 audio->eos_rsp = 0;
  96                 audio->eos_flag = 0;
  97                 if (!rc) {
  98                         audio->enabled = 1;
  99                 } else {
 100                         audio->enabled = 0;
 101                         pr_err("Audio Start procedure failed rc=%d\n", rc);
 102                         break;
 103                 }
 104                 pr_debug("%s:AUDIO_START sessionid[%d]enable[%d]\n", __func__,
 105                         audio->ac->session,
 106                         audio->enabled);
 107                 audio->stopped = 0;
 108                 break;
 109         default:
 110                 pr_err("%s: Unknown ioctl cmd = %d", __func__, cmd);
 111                 rc = -EINVAL;
 112                 break;
 113         }
 114         return rc;
 115 }
 116
 117 static long audio_ioctl(struct file *file, unsigned int cmd,
 118                                                 unsigned long arg)
 119 {
 120         struct q6audio_aio *audio = file->private_data;
 121         int rc = 0;
 122
 123         switch (cmd) {
 124         case AUDIO_START: {
 125                 rc = audio_ioctl_shared(file, cmd, (void *)arg);
 126                 break;
 127         }
 128         case AUDIO_GET_AMRWBPLUS_CONFIG_V2: {
 129                 if ((audio) && (arg) && (audio->codec_cfg)) {
 130                         if (copy_to_user((void *)arg, audio->codec_cfg,
 131                                 sizeof(struct msm_audio_amrwbplus_config_v2))) {
 132                                 rc = -EFAULT;
 133                                 pr_err("%s: copy_to_user for AUDIO_GET_AMRWBPLUS_CONFIG_V2 failed\n",
 134                                         __func__);
 135                                 break;
 136                         }
 137                         } else {
 138                                 pr_err("%s: wb+ config v2 invalid parameters\n"
 139                                         , __func__);
 140                                 rc = -EFAULT;
 141                                 break;
 142                         }
 143                 break;
 144         }
 145         case AUDIO_SET_AMRWBPLUS_CONFIG_V2: {
 146                 if ((audio) && (arg) && (audio->codec_cfg)) {
 147                         if (copy_from_user(audio->codec_cfg, (void *)arg,
 148                                 sizeof(struct msm_audio_amrwbplus_config_v2))) {
 149                                 rc = -EFAULT;
 150                                 pr_err("%s: copy_from_user for AUDIO_SET_AMRWBPLUS_CONFIG_V2 failed\n",
 151                                         __func__);
 152                                 break;
 153                         }
 154                         } else {
 155                                 pr_err("%s: wb+ config invalid parameters\n",
 156                                         __func__);
 157                                 rc = -EFAULT;
 158                                 break;
 159                         }
 160                 break;
 161         }
 162         default: {
 163                 pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
 164                 rc = audio->codec_ioctl(file, cmd, arg);
 165                 break;
 166         }
 167         }
 168         return rc;
 169 }
 170 #ifdef CONFIG_COMPAT
 171 struct msm_audio_amrwbplus_config_v2_32 {
 172         u32 size_bytes;
 173         u32 version;
 174         u32 num_channels;
 175         u32 amr_band_mode;
 176         u32 amr_dtx_mode;
 177         u32 amr_frame_fmt;
 178         u32 amr_lsf_idx;
 179 };
 180
 181 enum {
 182         AUDIO_GET_AMRWBPLUS_CONFIG_V2_32 = _IOR(AUDIO_IOCTL_MAGIC,
 183                 (AUDIO_MAX_COMMON_IOCTL_NUM+2),
 184                 struct msm_audio_amrwbplus_config_v2_32),
 185         AUDIO_SET_AMRWBPLUS_CONFIG_V2_32 = _IOW(AUDIO_IOCTL_MAGIC,
 186                 (AUDIO_MAX_COMMON_IOCTL_NUM+3),
 187                 struct msm_audio_amrwbplus_config_v2_32)
 188 };
 189
 190 static long audio_compat_ioctl(struct file *file, unsigned int cmd,
 191                                         unsigned long arg)
 192 {
 193         struct q6audio_aio *audio = file->private_data;
 194         int rc = 0;
 195
 196         switch (cmd) {
 197         case AUDIO_START: {
 198                 rc = audio_ioctl_shared(file, cmd, (void *)arg);
 199                 break;
 200         }
 201         case AUDIO_GET_AMRWBPLUS_CONFIG_V2_32: {
 202                 if (audio && arg && (audio->codec_cfg)) {
 203                         struct msm_audio_amrwbplus_config_v2 *amrwbplus_config;
 204                         struct msm_audio_amrwbplus_config_v2_32
 205                                                 amrwbplus_config_32;
 206
 207                         memset(&amrwbplus_config_32, 0,
 208                                         sizeof(amrwbplus_config_32));
 209
 210                         amrwbplus_config =
 211                                 (struct msm_audio_amrwbplus_config_v2 *)
 212                                 audio->codec_cfg;
 213                         amrwbplus_config_32.size_bytes =
 214                                         amrwbplus_config->size_bytes;
 215                         amrwbplus_config_32.version =
 216                                         amrwbplus_config->version;
 217                         amrwbplus_config_32.num_channels =
 218                                         amrwbplus_config->num_channels;
 219                         amrwbplus_config_32.amr_band_mode =
 220                                         amrwbplus_config->amr_band_mode;
 221                         amrwbplus_config_32.amr_dtx_mode =
 222                                         amrwbplus_config->amr_dtx_mode;
 223                         amrwbplus_config_32.amr_frame_fmt =
 224                                         amrwbplus_config->amr_frame_fmt;
 225                         amrwbplus_config_32.amr_lsf_idx =
 226                                         amrwbplus_config->amr_lsf_idx;
 227
 228                         if (copy_to_user((void *)arg, &amrwbplus_config_32,
 229                                 sizeof(amrwbplus_config_32))) {
 230                                 rc = -EFAULT;
 231                                 pr_err("%s: copy_to_user for AUDIO_GET_AMRWBPLUS_CONFIG_V2_32 failed\n"
 232                                         , __func__);
 233                         }
 234                 } else {
 235                         pr_err("%s: wb+ Get config v2 invalid parameters\n"
 236                                 , __func__);
 237                         rc = -EFAULT;
 238                 }
 239                 break;
 240         }
 241         case AUDIO_SET_AMRWBPLUS_CONFIG_V2_32: {
 242                 if ((audio) && (arg) && (audio->codec_cfg)) {
 243                         struct msm_audio_amrwbplus_config_v2 *amrwbplus_config;
 244                         struct msm_audio_amrwbplus_config_v2_32
 245                                                         amrwbplus_config_32;
 246
 247                         if (copy_from_user(&amrwbplus_config_32, (void *)arg,
 248                         sizeof(struct msm_audio_amrwbplus_config_v2_32))) {
 249                                 rc = -EFAULT;
 250                                 pr_err("%s: copy_from_user for AUDIO_SET_AMRWBPLUS_CONFIG_V2_32 failed\n"
 251                                         , __func__);
 252                                 break;
 253                         }
 254                         amrwbplus_config =
 255                          (struct msm_audio_amrwbplus_config_v2 *)
 256                                                 audio->codec_cfg;
 257                         amrwbplus_config->size_bytes =
 258                                         amrwbplus_config_32.size_bytes;
 259                         amrwbplus_config->version =
 260                                         amrwbplus_config_32.version;
 261                         amrwbplus_config->num_channels =
 262                                         amrwbplus_config_32.num_channels;
 263                         amrwbplus_config->amr_band_mode =
 264                                         amrwbplus_config_32.amr_band_mode;
 265                         amrwbplus_config->amr_dtx_mode =
 266                                         amrwbplus_config_32.amr_dtx_mode;
 267                         amrwbplus_config->amr_frame_fmt =
 268                                         amrwbplus_config_32.amr_frame_fmt;
 269                         amrwbplus_config->amr_lsf_idx =
 270                                         amrwbplus_config_32.amr_lsf_idx;
 271                 } else {
 272                         pr_err("%s: wb+ config invalid parameters\n",
 273                                 __func__);
 274                         rc = -EFAULT;
 275                 }
 276                 break;
 277         }
 278         default: {
 279                 pr_debug("%s[%pK]: Calling utils ioctl\n", __func__, audio);
 280                 rc = audio->codec_compat_ioctl(file, cmd, arg);
 281                 break;
 282         }
 283         }
 284         return rc;
 285 }
 286 #else
 287 #define audio_compat_ioctl NULL
 288 #endif
 289
 290 static int audio_open(struct inode *inode, struct file *file)
 291 {
 292         struct q6audio_aio *audio = NULL;
 293         int rc = 0;
 294
 295         audio = kzalloc(sizeof(struct q6audio_aio), GFP_KERNEL);
 296
 297         if (audio == NULL) {
 298                 pr_err("kzalloc failed for amrwb+ decode driver\n");
 299                 return -ENOMEM;
 300         }
 301         audio->codec_cfg =
 302         kzalloc(sizeof(struct msm_audio_amrwbplus_config_v2), GFP_KERNEL);
 303         if (audio->codec_cfg == NULL) {
 304                 pr_err("%s:failed kzalloc for amrwb+ config structure",
 305                         __func__);
 306                 kfree(audio);
 307                 return -ENOMEM;
 308         }
 309         audio->pcm_cfg.buffer_size = PCM_BUFSZ_MIN;
 310         audio->miscdevice = &audio_amrwbplus_misc;
 311         audio->wakelock_voted = false;
 312         audio->audio_ws_mgr = &audio_amrwbplus_ws_mgr;
 313
 314         audio->ac =
 315         q6asm_audio_client_alloc((app_cb) q6_audio_cb, (void *)audio);
 316
 317         if (!audio->ac) {
 318                 pr_err("Could not allocate memory for audio client\n");
 319                 kfree(audio->codec_cfg);
 320                 kfree(audio);
 321                 return -ENOMEM;
 322         }
 323         rc = audio_aio_open(audio, file);
 324         if (rc < 0) {
 325                 pr_err("%s: audio_aio_open rc=%d\n",
 326                         __func__, rc);
 327                 goto fail;
 328         }
 329
 330         /* open in T/NT mode */
 331         if ((file->f_mode & FMODE_WRITE) && (file->f_mode & FMODE_READ)) {
 332                 rc = q6asm_open_read_write(audio->ac, FORMAT_LINEAR_PCM,
 333                                         FORMAT_AMR_WB_PLUS);
 334                 if (rc < 0) {
 335                         pr_err("amrwbplus NT mode Open failed rc=%d\n", rc);
 336                         rc = -ENODEV;
 337                         goto fail;
 338                 }
 339                 audio->feedback = NON_TUNNEL_MODE;
 340                 audio->buf_cfg.frames_per_buf = 0x01;
 341                 audio->buf_cfg.meta_info_enable = 0x01;
 342         } else if ((file->f_mode & FMODE_WRITE) &&
 343                         !(file->f_mode & FMODE_READ)) {
 344                         rc = q6asm_open_write(audio->ac, FORMAT_AMR_WB_PLUS);
 345                         if (rc < 0) {
 346                                 pr_err("wb+ T mode Open failed rc=%d\n", rc);
 347                                 rc = -ENODEV;
 348                                 goto fail;
 349                         }
 350                 audio->feedback = TUNNEL_MODE;
 351                 audio->buf_cfg.meta_info_enable = 0x00;
 352         } else {
 353                 pr_err("audio_amrwbplus Not supported mode\n");
 354                 rc = -EACCES;
 355                 goto fail;
 356         }
 357
 358         config_debug_fs(audio);
 359         pr_debug("%s: AMRWBPLUS dec success mode[%d]session[%d]\n", __func__,
 360                 audio->feedback,
 361                 audio->ac->session);
 362         return 0;
 363 fail:
 364         q6asm_audio_client_free(audio->ac);
 365         kfree(audio->codec_cfg);
 366         kfree(audio);
 367         return rc;
 368 }
 369
 370 static const struct file_operations audio_amrwbplus_fops = {
 371         .owner = THIS_MODULE,
 372         .open = audio_open,
 373         .release = audio_aio_release,
 374         .unlocked_ioctl = audio_ioctl,
 375         .fsync = audio_aio_fsync,
 376         .compat_ioctl = audio_compat_ioctl
 377 };
 378
 379 static struct miscdevice audio_amrwbplus_misc = {
 380         .minor = MISC_DYNAMIC_MINOR,
 381         .name = "msm_amrwbplus",
 382         .fops = &audio_amrwbplus_fops,
 383 };
 384
 385 static int __init audio_amrwbplus_init(void)
 386 {
 387         int ret = misc_register(&audio_amrwbplus_misc);
 388
 389         if (ret == 0)
 390                 device_init_wakeup(audio_amrwbplus_misc.this_device, true);
 391         audio_amrwbplus_ws_mgr.ref_cnt = 0;
 392         mutex_init(&audio_amrwbplus_ws_mgr.ws_lock);
 393
 394         return ret;
 395 }
 396
 397 device_initcall(audio_amrwbplus_init);