sound/soc/qcom/qdsp6/q6asm-dai.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright (c) 2011-2017, The Linux Foundation. All rights reserved.
   3 // Copyright (c) 2018, Linaro Limited
   4
   5 #include <linux/init.h>
   6 #include <linux/err.h>
   7 #include <linux/module.h>
   8 #include <linux/platform_device.h>
   9 #include <linux/slab.h>
  10 #include <sound/soc.h>
  11 #include <sound/soc-dapm.h>
  12 #include <sound/pcm.h>
  13 #include <linux/spinlock.h>
  14 #include <sound/compress_driver.h>
  15 #include <asm/dma.h>
  16 #include <linux/dma-mapping.h>
  17 #include <linux/of_device.h>
  18 #include <sound/pcm_params.h>
  19 #include "q6asm.h"
  20 #include "q6routing.h"
  21 #include "q6dsp-errno.h"
  22
  23 #define DRV_NAME        "q6asm-fe-dai"
  24
  25 #define PLAYBACK_MIN_NUM_PERIODS    2
  26 #define PLAYBACK_MAX_NUM_PERIODS   8
  27 #define PLAYBACK_MAX_PERIOD_SIZE    65536
  28 #define PLAYBACK_MIN_PERIOD_SIZE    128
  29 #define CAPTURE_MIN_NUM_PERIODS     2
  30 #define CAPTURE_MAX_NUM_PERIODS     8
  31 #define CAPTURE_MAX_PERIOD_SIZE     4096
  32 #define CAPTURE_MIN_PERIOD_SIZE     320
  33 #define SID_MASK_DEFAULT        0xF
  34
  35 /* Default values used if user space does not set */
  36 #define COMPR_PLAYBACK_MIN_FRAGMENT_SIZE (8 * 1024)
  37 #define COMPR_PLAYBACK_MAX_FRAGMENT_SIZE (128 * 1024)
  38 #define COMPR_PLAYBACK_MIN_NUM_FRAGMENTS (4)
  39 #define COMPR_PLAYBACK_MAX_NUM_FRAGMENTS (16 * 4)
  40 #define Q6ASM_DAI_TX_RX 0
  41 #define Q6ASM_DAI_TX    1
  42 #define Q6ASM_DAI_RX    2
  43
  44 #define ALAC_CH_LAYOUT_MONO   ((101 << 16) | 1)
  45 #define ALAC_CH_LAYOUT_STEREO ((101 << 16) | 2)
  46
  47 enum stream_state {
  48         Q6ASM_STREAM_IDLE = 0,
  49         Q6ASM_STREAM_STOPPED,
  50         Q6ASM_STREAM_RUNNING,
  51 };
  52
  53 struct q6asm_dai_rtd {
  54         struct snd_pcm_substream *substream;
  55         struct snd_compr_stream *cstream;
  56         struct snd_compr_params codec_param;
  57         struct snd_dma_buffer dma_buffer;
  58         spinlock_t lock;
  59         phys_addr_t phys;
  60         unsigned int pcm_size;
  61         unsigned int pcm_count;
  62         unsigned int pcm_irq_pos;       /* IRQ position */
  63         unsigned int periods;
  64         unsigned int bytes_sent;
  65         unsigned int bytes_received;
  66         unsigned int copied_total;
  67         uint16_t bits_per_sample;
  68         uint16_t source; /* Encoding source bit mask */
  69         struct audio_client *audio_client;
  70         uint16_t session_id;
  71         enum stream_state state;
  72 };
  73
  74 struct q6asm_dai_data {
  75         struct snd_soc_dai_driver *dais;
  76         int num_dais;
  77         long long int sid;
  78 };
  79
  80 static const struct snd_pcm_hardware q6asm_dai_hardware_capture = {
  81         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BATCH |
  82                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
  83                                 SNDRV_PCM_INFO_MMAP_VALID |
  84                                 SNDRV_PCM_INFO_INTERLEAVED |
  85                                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
  86         .formats =              (SNDRV_PCM_FMTBIT_S16_LE |
  87                                 SNDRV_PCM_FMTBIT_S24_LE),
  88         .rates =                SNDRV_PCM_RATE_8000_48000,
  89         .rate_min =             8000,
  90         .rate_max =             48000,
  91         .channels_min =         1,
  92         .channels_max =         4,
  93         .buffer_bytes_max =     CAPTURE_MAX_NUM_PERIODS *
  94                                 CAPTURE_MAX_PERIOD_SIZE,
  95         .period_bytes_min =     CAPTURE_MIN_PERIOD_SIZE,
  96         .period_bytes_max =     CAPTURE_MAX_PERIOD_SIZE,
  97         .periods_min =          CAPTURE_MIN_NUM_PERIODS,
  98         .periods_max =          CAPTURE_MAX_NUM_PERIODS,
  99         .fifo_size =            0,
 100 };
 101
 102 static struct snd_pcm_hardware q6asm_dai_hardware_playback = {
 103         .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_BATCH |
 104                                 SNDRV_PCM_INFO_BLOCK_TRANSFER |
 105                                 SNDRV_PCM_INFO_MMAP_VALID |
 106                                 SNDRV_PCM_INFO_INTERLEAVED |
 107                                 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME),
 108         .formats =              (SNDRV_PCM_FMTBIT_S16_LE |
 109                                 SNDRV_PCM_FMTBIT_S24_LE),
 110         .rates =                SNDRV_PCM_RATE_8000_192000,
 111         .rate_min =             8000,
 112         .rate_max =             192000,
 113         .channels_min =         1,
 114         .channels_max =         8,
 115         .buffer_bytes_max =     (PLAYBACK_MAX_NUM_PERIODS *
 116                                 PLAYBACK_MAX_PERIOD_SIZE),
 117         .period_bytes_min =     PLAYBACK_MIN_PERIOD_SIZE,
 118         .period_bytes_max =     PLAYBACK_MAX_PERIOD_SIZE,
 119         .periods_min =          PLAYBACK_MIN_NUM_PERIODS,
 120         .periods_max =          PLAYBACK_MAX_NUM_PERIODS,
 121         .fifo_size =            0,
 122 };
 123
 124 #define Q6ASM_FEDAI_DRIVER(num) { \
 125                 .playback = {                                           \
 126                         .stream_name = "MultiMedia"#num" Playback",     \
 127                         .rates = (SNDRV_PCM_RATE_8000_192000|           \
 128                                         SNDRV_PCM_RATE_KNOT),           \
 129                         .formats = (SNDRV_PCM_FMTBIT_S16_LE |           \
 130                                         SNDRV_PCM_FMTBIT_S24_LE),       \
 131                         .channels_min = 1,                              \
 132                         .channels_max = 8,                              \
 133                         .rate_min =     8000,                           \
 134                         .rate_max =     192000,                         \
 135                 },                                                      \
 136                 .capture = {                                            \
 137                         .stream_name = "MultiMedia"#num" Capture",      \
 138                         .rates = (SNDRV_PCM_RATE_8000_48000|            \
 139                                         SNDRV_PCM_RATE_KNOT),           \
 140                         .formats = (SNDRV_PCM_FMTBIT_S16_LE |           \
 141                                     SNDRV_PCM_FMTBIT_S24_LE),           \
 142                         .channels_min = 1,                              \
 143                         .channels_max = 4,                              \
 144                         .rate_min =     8000,                           \
 145                         .rate_max =     48000,                          \
 146                 },                                                      \
 147                 .name = "MultiMedia"#num,                               \
 148                 .id = MSM_FRONTEND_DAI_MULTIMEDIA##num,                 \
 149         }
 150
 151 /* Conventional and unconventional sample rate supported */
 152 static unsigned int supported_sample_rates[] = {
 153         8000, 11025, 12000, 16000, 22050, 24000, 32000, 44100, 48000,
 154         88200, 96000, 176400, 192000
 155 };
 156
 157 static struct snd_pcm_hw_constraint_list constraints_sample_rates = {
 158         .count = ARRAY_SIZE(supported_sample_rates),
 159         .list = supported_sample_rates,
 160         .mask = 0,
 161 };
 162
 163 static const struct snd_compr_codec_caps q6asm_compr_caps = {
 164         .num_descriptors = 1,
 165         .descriptor[0].max_ch = 2,
 166         .descriptor[0].sample_rates = { 8000, 11025, 12000, 16000, 22050,
 167                                         24000, 32000, 44100, 48000, 88200,
 168                                         96000, 176400, 192000 },
 169         .descriptor[0].num_sample_rates = 13,
 170         .descriptor[0].bit_rate[0] = 320,
 171         .descriptor[0].bit_rate[1] = 128,
 172         .descriptor[0].num_bitrates = 2,
 173         .descriptor[0].profiles = 0,
 174         .descriptor[0].modes = SND_AUDIOCHANMODE_MP3_STEREO,
 175         .descriptor[0].formats = 0,
 176 };
 177
 178 static void event_handler(uint32_t opcode, uint32_t token,
 179                           void *payload, void *priv)
 180 {
 181         struct q6asm_dai_rtd *prtd = priv;
 182         struct snd_pcm_substream *substream = prtd->substream;
 183
 184         switch (opcode) {
 185         case ASM_CLIENT_EVENT_CMD_RUN_DONE:
 186                 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 187                         q6asm_write_async(prtd->audio_client,
 188                                    prtd->pcm_count, 0, 0, NO_TIMESTAMP);
 189                 break;
 190         case ASM_CLIENT_EVENT_CMD_EOS_DONE:
 191                 prtd->state = Q6ASM_STREAM_STOPPED;
 192                 break;
 193         case ASM_CLIENT_EVENT_DATA_WRITE_DONE: {
 194                 prtd->pcm_irq_pos += prtd->pcm_count;
 195                 snd_pcm_period_elapsed(substream);
 196                 if (prtd->state == Q6ASM_STREAM_RUNNING)
 197                         q6asm_write_async(prtd->audio_client,
 198                                            prtd->pcm_count, 0, 0, NO_TIMESTAMP);
 199
 200                 break;
 201                 }
 202         case ASM_CLIENT_EVENT_DATA_READ_DONE:
 203                 prtd->pcm_irq_pos += prtd->pcm_count;
 204                 snd_pcm_period_elapsed(substream);
 205                 if (prtd->state == Q6ASM_STREAM_RUNNING)
 206                         q6asm_read(prtd->audio_client);
 207
 208                 break;
 209         default:
 210                 break;
 211         }
 212 }
 213
 214 static int q6asm_dai_prepare(struct snd_soc_component *component,
 215                              struct snd_pcm_substream *substream)
 216 {
 217         struct snd_pcm_runtime *runtime = substream->runtime;
 218         struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
 219         struct q6asm_dai_rtd *prtd = runtime->private_data;
 220         struct q6asm_dai_data *pdata;
 221         int ret, i;
 222
 223         pdata = snd_soc_component_get_drvdata(component);
 224         if (!pdata)
 225                 return -EINVAL;
 226
 227         if (!prtd || !prtd->audio_client) {
 228                 pr_err("%s: private data null or audio client freed\n",
 229                         __func__);
 230                 return -EINVAL;
 231         }
 232
 233         prtd->pcm_count = snd_pcm_lib_period_bytes(substream);
 234         prtd->pcm_irq_pos = 0;
 235         /* rate and channels are sent to audio driver */
 236         if (prtd->state) {
 237                 /* clear the previous setup if any  */
 238                 q6asm_cmd(prtd->audio_client, CMD_CLOSE);
 239                 q6asm_unmap_memory_regions(substream->stream,
 240                                            prtd->audio_client);
 241                 q6routing_stream_close(soc_prtd->dai_link->id,
 242                                          substream->stream);
 243         }
 244
 245         ret = q6asm_map_memory_regions(substream->stream, prtd->audio_client,
 246                                        prtd->phys,
 247                                        (prtd->pcm_size / prtd->periods),
 248                                        prtd->periods);
 249
 250         if (ret < 0) {
 251                 pr_err("Audio Start: Buffer Allocation failed rc = %d\n",
 252                                                         ret);
 253                 return -ENOMEM;
 254         }
 255
 256         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 257                 ret = q6asm_open_write(prtd->audio_client, FORMAT_LINEAR_PCM,
 258                                        0, prtd->bits_per_sample);
 259         } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 260                 ret = q6asm_open_read(prtd->audio_client, FORMAT_LINEAR_PCM,
 261                                        prtd->bits_per_sample);
 262         }
 263
 264         if (ret < 0) {
 265                 pr_err("%s: q6asm_open_write failed\n", __func__);
 266                 q6asm_audio_client_free(prtd->audio_client);
 267                 prtd->audio_client = NULL;
 268                 return -ENOMEM;
 269         }
 270
 271         prtd->session_id = q6asm_get_session_id(prtd->audio_client);
 272         ret = q6routing_stream_open(soc_prtd->dai_link->id, LEGACY_PCM_MODE,
 273                               prtd->session_id, substream->stream);
 274         if (ret) {
 275                 pr_err("%s: stream reg failed ret:%d\n", __func__, ret);
 276                 return ret;
 277         }
 278
 279         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 280                 ret = q6asm_media_format_block_multi_ch_pcm(
 281                                 prtd->audio_client, runtime->rate,
 282                                 runtime->channels, NULL,
 283                                 prtd->bits_per_sample);
 284         } else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) {
 285                 ret = q6asm_enc_cfg_blk_pcm_format_support(prtd->audio_client,
 286                                         runtime->rate, runtime->channels,
 287                                         prtd->bits_per_sample);
 288
 289                 /* Queue the buffers */
 290                 for (i = 0; i < runtime->periods; i++)
 291                         q6asm_read(prtd->audio_client);
 292
 293         }
 294         if (ret < 0)
 295                 pr_info("%s: CMD Format block failed\n", __func__);
 296
 297         prtd->state = Q6ASM_STREAM_RUNNING;
 298
 299         return 0;
 300 }
 301
 302 static int q6asm_dai_trigger(struct snd_soc_component *component,
 303                              struct snd_pcm_substream *substream, int cmd)
 304 {
 305         int ret = 0;
 306         struct snd_pcm_runtime *runtime = substream->runtime;
 307         struct q6asm_dai_rtd *prtd = runtime->private_data;
 308
 309         switch (cmd) {
 310         case SNDRV_PCM_TRIGGER_START:
 311         case SNDRV_PCM_TRIGGER_RESUME:
 312         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 313                 ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);
 314                 break;
 315         case SNDRV_PCM_TRIGGER_STOP:
 316                 prtd->state = Q6ASM_STREAM_STOPPED;
 317                 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_EOS);
 318                 break;
 319         case SNDRV_PCM_TRIGGER_SUSPEND:
 320         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 321                 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_PAUSE);
 322                 break;
 323         default:
 324                 ret = -EINVAL;
 325                 break;
 326         }
 327
 328         return ret;
 329 }
 330
 331 static int q6asm_dai_open(struct snd_soc_component *component,
 332                           struct snd_pcm_substream *substream)
 333 {
 334         struct snd_pcm_runtime *runtime = substream->runtime;
 335         struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
 336         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(soc_prtd, 0);
 337         struct q6asm_dai_rtd *prtd;
 338         struct q6asm_dai_data *pdata;
 339         struct device *dev = component->dev;
 340         int ret = 0;
 341         int stream_id;
 342
 343         stream_id = cpu_dai->driver->id;
 344
 345         pdata = snd_soc_component_get_drvdata(component);
 346         if (!pdata) {
 347                 pr_err("Drv data not found ..\n");
 348                 return -EINVAL;
 349         }
 350
 351         prtd = kzalloc(sizeof(struct q6asm_dai_rtd), GFP_KERNEL);
 352         if (prtd == NULL)
 353                 return -ENOMEM;
 354
 355         prtd->substream = substream;
 356         prtd->audio_client = q6asm_audio_client_alloc(dev,
 357                                 (q6asm_cb)event_handler, prtd, stream_id,
 358                                 LEGACY_PCM_MODE);
 359         if (IS_ERR(prtd->audio_client)) {
 360                 pr_info("%s: Could not allocate memory\n", __func__);
 361                 ret = PTR_ERR(prtd->audio_client);
 362                 kfree(prtd);
 363                 return ret;
 364         }
 365
 366         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 367                 runtime->hw = q6asm_dai_hardware_playback;
 368         else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
 369                 runtime->hw = q6asm_dai_hardware_capture;
 370
 371         ret = snd_pcm_hw_constraint_list(runtime, 0,
 372                                 SNDRV_PCM_HW_PARAM_RATE,
 373                                 &constraints_sample_rates);
 374         if (ret < 0)
 375                 pr_info("snd_pcm_hw_constraint_list failed\n");
 376         /* Ensure that buffer size is a multiple of period size */
 377         ret = snd_pcm_hw_constraint_integer(runtime,
 378                                             SNDRV_PCM_HW_PARAM_PERIODS);
 379         if (ret < 0)
 380                 pr_info("snd_pcm_hw_constraint_integer failed\n");
 381
 382         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 383                 ret = snd_pcm_hw_constraint_minmax(runtime,
 384                         SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
 385                         PLAYBACK_MIN_NUM_PERIODS * PLAYBACK_MIN_PERIOD_SIZE,
 386                         PLAYBACK_MAX_NUM_PERIODS * PLAYBACK_MAX_PERIOD_SIZE);
 387                 if (ret < 0) {
 388                         pr_err("constraint for buffer bytes min max ret = %d\n",
 389                                                                         ret);
 390                 }
 391         }
 392
 393         ret = snd_pcm_hw_constraint_step(runtime, 0,
 394                 SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 32);
 395         if (ret < 0) {
 396                 pr_err("constraint for period bytes step ret = %d\n",
 397                                                                 ret);
 398         }
 399         ret = snd_pcm_hw_constraint_step(runtime, 0,
 400                 SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 32);
 401         if (ret < 0) {
 402                 pr_err("constraint for buffer bytes step ret = %d\n",
 403                                                                 ret);
 404         }
 405
 406         runtime->private_data = prtd;
 407
 408         snd_soc_set_runtime_hwparams(substream, &q6asm_dai_hardware_playback);
 409
 410         runtime->dma_bytes = q6asm_dai_hardware_playback.buffer_bytes_max;
 411
 412
 413         if (pdata->sid < 0)
 414                 prtd->phys = substream->dma_buffer.addr;
 415         else
 416                 prtd->phys = substream->dma_buffer.addr | (pdata->sid << 32);
 417
 418         snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
 419
 420         return 0;
 421 }
 422
 423 static int q6asm_dai_close(struct snd_soc_component *component,
 424                            struct snd_pcm_substream *substream)
 425 {
 426         struct snd_pcm_runtime *runtime = substream->runtime;
 427         struct snd_soc_pcm_runtime *soc_prtd = substream->private_data;
 428         struct q6asm_dai_rtd *prtd = runtime->private_data;
 429
 430         if (prtd->audio_client) {
 431                 if (prtd->state)
 432                         q6asm_cmd(prtd->audio_client, CMD_CLOSE);
 433
 434                 q6asm_unmap_memory_regions(substream->stream,
 435                                            prtd->audio_client);
 436                 q6asm_audio_client_free(prtd->audio_client);
 437                 prtd->audio_client = NULL;
 438         }
 439         q6routing_stream_close(soc_prtd->dai_link->id,
 440                                                 substream->stream);
 441         kfree(prtd);
 442         return 0;
 443 }
 444
 445 static snd_pcm_uframes_t q6asm_dai_pointer(struct snd_soc_component *component,
 446                                            struct snd_pcm_substream *substream)
 447 {
 448
 449         struct snd_pcm_runtime *runtime = substream->runtime;
 450         struct q6asm_dai_rtd *prtd = runtime->private_data;
 451
 452         if (prtd->pcm_irq_pos >= prtd->pcm_size)
 453                 prtd->pcm_irq_pos = 0;
 454
 455         return bytes_to_frames(runtime, (prtd->pcm_irq_pos));
 456 }
 457
 458 static int q6asm_dai_mmap(struct snd_soc_component *component,
 459                           struct snd_pcm_substream *substream,
 460                           struct vm_area_struct *vma)
 461 {
 462         struct snd_pcm_runtime *runtime = substream->runtime;
 463         struct device *dev = component->dev;
 464
 465         return dma_mmap_coherent(dev, vma,
 466                         runtime->dma_area, runtime->dma_addr,
 467                         runtime->dma_bytes);
 468 }
 469
 470 static int q6asm_dai_hw_params(struct snd_soc_component *component,
 471                                struct snd_pcm_substream *substream,
 472                                struct snd_pcm_hw_params *params)
 473 {
 474         struct snd_pcm_runtime *runtime = substream->runtime;
 475         struct q6asm_dai_rtd *prtd = runtime->private_data;
 476
 477         prtd->pcm_size = params_buffer_bytes(params);
 478         prtd->periods = params_periods(params);
 479
 480         switch (params_format(params)) {
 481         case SNDRV_PCM_FORMAT_S16_LE:
 482                 prtd->bits_per_sample = 16;
 483                 break;
 484         case SNDRV_PCM_FORMAT_S24_LE:
 485                 prtd->bits_per_sample = 24;
 486                 break;
 487         }
 488
 489         return 0;
 490 }
 491
 492 static void compress_event_handler(uint32_t opcode, uint32_t token,
 493                                    void *payload, void *priv)
 494 {
 495         struct q6asm_dai_rtd *prtd = priv;
 496         struct snd_compr_stream *substream = prtd->cstream;
 497         unsigned long flags;
 498         uint64_t avail;
 499
 500         switch (opcode) {
 501         case ASM_CLIENT_EVENT_CMD_RUN_DONE:
 502                 spin_lock_irqsave(&prtd->lock, flags);
 503                 if (!prtd->bytes_sent) {
 504                         q6asm_write_async(prtd->audio_client, prtd->pcm_count,
 505                                           0, 0, NO_TIMESTAMP);
 506                         prtd->bytes_sent += prtd->pcm_count;
 507                 }
 508
 509                 spin_unlock_irqrestore(&prtd->lock, flags);
 510                 break;
 511
 512         case ASM_CLIENT_EVENT_CMD_EOS_DONE:
 513                 prtd->state = Q6ASM_STREAM_STOPPED;
 514                 break;
 515
 516         case ASM_CLIENT_EVENT_DATA_WRITE_DONE:
 517                 spin_lock_irqsave(&prtd->lock, flags);
 518
 519                 prtd->copied_total += prtd->pcm_count;
 520                 snd_compr_fragment_elapsed(substream);
 521
 522                 if (prtd->state != Q6ASM_STREAM_RUNNING) {
 523                         spin_unlock_irqrestore(&prtd->lock, flags);
 524                         break;
 525                 }
 526
 527                 avail = prtd->bytes_received - prtd->bytes_sent;
 528
 529                 if (avail >= prtd->pcm_count) {
 530                         q6asm_write_async(prtd->audio_client,
 531                                            prtd->pcm_count, 0, 0, NO_TIMESTAMP);
 532                         prtd->bytes_sent += prtd->pcm_count;
 533                 }
 534
 535                 spin_unlock_irqrestore(&prtd->lock, flags);
 536                 break;
 537
 538         default:
 539                 break;
 540         }
 541 }
 542
 543 static int q6asm_dai_compr_open(struct snd_soc_component *component,
 544                                 struct snd_compr_stream *stream)
 545 {
 546         struct snd_soc_pcm_runtime *rtd = stream->private_data;
 547         struct snd_compr_runtime *runtime = stream->runtime;
 548         struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
 549         struct q6asm_dai_data *pdata;
 550         struct device *dev = component->dev;
 551         struct q6asm_dai_rtd *prtd;
 552         int stream_id, size, ret;
 553
 554         stream_id = cpu_dai->driver->id;
 555         pdata = snd_soc_component_get_drvdata(component);
 556         if (!pdata) {
 557                 dev_err(dev, "Drv data not found ..\n");
 558                 return -EINVAL;
 559         }
 560
 561         prtd = kzalloc(sizeof(*prtd), GFP_KERNEL);
 562         if (!prtd)
 563                 return -ENOMEM;
 564
 565         prtd->cstream = stream;
 566         prtd->audio_client = q6asm_audio_client_alloc(dev,
 567                                         (q6asm_cb)compress_event_handler,
 568                                         prtd, stream_id, LEGACY_PCM_MODE);
 569         if (IS_ERR(prtd->audio_client)) {
 570                 dev_err(dev, "Could not allocate memory\n");
 571                 ret = PTR_ERR(prtd->audio_client);
 572                 goto free_prtd;
 573         }
 574
 575         size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE *
 576                         COMPR_PLAYBACK_MAX_NUM_FRAGMENTS;
 577         ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
 578                                   &prtd->dma_buffer);
 579         if (ret) {
 580                 dev_err(dev, "Cannot allocate buffer(s)\n");
 581                 goto free_client;
 582         }
 583
 584         if (pdata->sid < 0)
 585                 prtd->phys = prtd->dma_buffer.addr;
 586         else
 587                 prtd->phys = prtd->dma_buffer.addr | (pdata->sid << 32);
 588
 589         snd_compr_set_runtime_buffer(stream, &prtd->dma_buffer);
 590         spin_lock_init(&prtd->lock);
 591         runtime->private_data = prtd;
 592
 593         return 0;
 594
 595 free_client:
 596         q6asm_audio_client_free(prtd->audio_client);
 597 free_prtd:
 598         kfree(prtd);
 599
 600         return ret;
 601 }
 602
 603 static int q6asm_dai_compr_free(struct snd_soc_component *component,
 604                                 struct snd_compr_stream *stream)
 605 {
 606         struct snd_compr_runtime *runtime = stream->runtime;
 607         struct q6asm_dai_rtd *prtd = runtime->private_data;
 608         struct snd_soc_pcm_runtime *rtd = stream->private_data;
 609
 610         if (prtd->audio_client) {
 611                 if (prtd->state)
 612                         q6asm_cmd(prtd->audio_client, CMD_CLOSE);
 613
 614                 snd_dma_free_pages(&prtd->dma_buffer);
 615                 q6asm_unmap_memory_regions(stream->direction,
 616                                            prtd->audio_client);
 617                 q6asm_audio_client_free(prtd->audio_client);
 618                 prtd->audio_client = NULL;
 619         }
 620         q6routing_stream_close(rtd->dai_link->id, stream->direction);
 621         kfree(prtd);
 622
 623         return 0;
 624 }
 625
 626 static int q6asm_dai_compr_set_params(struct snd_soc_component *component,
 627                                       struct snd_compr_stream *stream,
 628                                       struct snd_compr_params *params)
 629 {
 630         struct snd_compr_runtime *runtime = stream->runtime;
 631         struct q6asm_dai_rtd *prtd = runtime->private_data;
 632         struct snd_soc_pcm_runtime *rtd = stream->private_data;
 633         int dir = stream->direction;
 634         struct q6asm_dai_data *pdata;
 635         struct q6asm_flac_cfg flac_cfg;
 636         struct q6asm_wma_cfg wma_cfg;
 637         struct q6asm_alac_cfg alac_cfg;
 638         struct q6asm_ape_cfg ape_cfg;
 639         unsigned int wma_v9 = 0;
 640         struct device *dev = component->dev;
 641         int ret;
 642         union snd_codec_options *codec_options;
 643         struct snd_dec_flac *flac;
 644         struct snd_dec_wma *wma;
 645         struct snd_dec_alac *alac;
 646         struct snd_dec_ape *ape;
 647
 648         codec_options = &(prtd->codec_param.codec.options);
 649
 650
 651         memcpy(&prtd->codec_param, params, sizeof(*params));
 652
 653         pdata = snd_soc_component_get_drvdata(component);
 654         if (!pdata)
 655                 return -EINVAL;
 656
 657         if (!prtd || !prtd->audio_client) {
 658                 dev_err(dev, "private data null or audio client freed\n");
 659                 return -EINVAL;
 660         }
 661
 662         prtd->periods = runtime->fragments;
 663         prtd->pcm_count = runtime->fragment_size;
 664         prtd->pcm_size = runtime->fragments * runtime->fragment_size;
 665         prtd->bits_per_sample = 16;
 666         if (dir == SND_COMPRESS_PLAYBACK) {
 667                 ret = q6asm_open_write(prtd->audio_client, params->codec.id,
 668                                 params->codec.profile, prtd->bits_per_sample);
 669
 670                 if (ret < 0) {
 671                         dev_err(dev, "q6asm_open_write failed\n");
 672                         q6asm_audio_client_free(prtd->audio_client);
 673                         prtd->audio_client = NULL;
 674                         return ret;
 675                 }
 676         }
 677
 678         prtd->session_id = q6asm_get_session_id(prtd->audio_client);
 679         ret = q6routing_stream_open(rtd->dai_link->id, LEGACY_PCM_MODE,
 680                               prtd->session_id, dir);
 681         if (ret) {
 682                 dev_err(dev, "Stream reg failed ret:%d\n", ret);
 683                 return ret;
 684         }
 685
 686         switch (params->codec.id) {
 687         case SND_AUDIOCODEC_FLAC:
 688
 689                 memset(&flac_cfg, 0x0, sizeof(struct q6asm_flac_cfg));
 690                 flac = &codec_options->flac_d;
 691
 692                 flac_cfg.ch_cfg = params->codec.ch_in;
 693                 flac_cfg.sample_rate =  params->codec.sample_rate;
 694                 flac_cfg.stream_info_present = 1;
 695                 flac_cfg.sample_size = flac->sample_size;
 696                 flac_cfg.min_blk_size = flac->min_blk_size;
 697                 flac_cfg.max_blk_size = flac->max_blk_size;
 698                 flac_cfg.max_frame_size = flac->max_frame_size;
 699                 flac_cfg.min_frame_size = flac->min_frame_size;
 700
 701                 ret = q6asm_stream_media_format_block_flac(prtd->audio_client,
 702                                                            &flac_cfg);
 703                 if (ret < 0) {
 704                         dev_err(dev, "FLAC CMD Format block failed:%d\n", ret);
 705                         return -EIO;
 706                 }
 707                 break;
 708
 709         case SND_AUDIOCODEC_WMA:
 710                 wma = &codec_options->wma_d;
 711
 712                 memset(&wma_cfg, 0x0, sizeof(struct q6asm_wma_cfg));
 713
 714                 wma_cfg.sample_rate =  params->codec.sample_rate;
 715                 wma_cfg.num_channels = params->codec.ch_in;
 716                 wma_cfg.bytes_per_sec = params->codec.bit_rate / 8;
 717                 wma_cfg.block_align = params->codec.align;
 718                 wma_cfg.bits_per_sample = prtd->bits_per_sample;
 719                 wma_cfg.enc_options = wma->encoder_option;
 720                 wma_cfg.adv_enc_options = wma->adv_encoder_option;
 721                 wma_cfg.adv_enc_options2 = wma->adv_encoder_option2;
 722
 723                 if (wma_cfg.num_channels == 1)
 724                         wma_cfg.channel_mask = 4; /* Mono Center */
 725                 else if (wma_cfg.num_channels == 2)
 726                         wma_cfg.channel_mask = 3; /* Stereo FL/FR */
 727                 else
 728                         return -EINVAL;
 729
 730                 /* check the codec profile */
 731                 switch (params->codec.profile) {
 732                 case SND_AUDIOPROFILE_WMA9:
 733                         wma_cfg.fmtag = 0x161;
 734                         wma_v9 = 1;
 735                         break;
 736
 737                 case SND_AUDIOPROFILE_WMA10:
 738                         wma_cfg.fmtag = 0x166;
 739                         break;
 740
 741                 case SND_AUDIOPROFILE_WMA9_PRO:
 742                         wma_cfg.fmtag = 0x162;
 743                         break;
 744
 745                 case SND_AUDIOPROFILE_WMA9_LOSSLESS:
 746                         wma_cfg.fmtag = 0x163;
 747                         break;
 748
 749                 case SND_AUDIOPROFILE_WMA10_LOSSLESS:
 750                         wma_cfg.fmtag = 0x167;
 751                         break;
 752
 753                 default:
 754                         dev_err(dev, "Unknown WMA profile:%x\n",
 755                                 params->codec.profile);
 756                         return -EIO;
 757                 }
 758
 759                 if (wma_v9)
 760                         ret = q6asm_stream_media_format_block_wma_v9(
 761                                         prtd->audio_client, &wma_cfg);
 762                 else
 763                         ret = q6asm_stream_media_format_block_wma_v10(
 764                                         prtd->audio_client, &wma_cfg);
 765                 if (ret < 0) {
 766                         dev_err(dev, "WMA9 CMD failed:%d\n", ret);
 767                         return -EIO;
 768                 }
 769                 break;
 770
 771         case SND_AUDIOCODEC_ALAC:
 772                 memset(&alac_cfg, 0x0, sizeof(alac_cfg));
 773                 alac = &codec_options->alac_d;
 774
 775                 alac_cfg.sample_rate = params->codec.sample_rate;
 776                 alac_cfg.avg_bit_rate = params->codec.bit_rate;
 777                 alac_cfg.bit_depth = prtd->bits_per_sample;
 778                 alac_cfg.num_channels = params->codec.ch_in;
 779
 780                 alac_cfg.frame_length = alac->frame_length;
 781                 alac_cfg.pb = alac->pb;
 782                 alac_cfg.mb = alac->mb;
 783                 alac_cfg.kb = alac->kb;
 784                 alac_cfg.max_run = alac->max_run;
 785                 alac_cfg.compatible_version = alac->compatible_version;
 786                 alac_cfg.max_frame_bytes = alac->max_frame_bytes;
 787
 788                 switch (params->codec.ch_in) {
 789                 case 1:
 790                         alac_cfg.channel_layout_tag = ALAC_CH_LAYOUT_MONO;
 791                         break;
 792                 case 2:
 793                         alac_cfg.channel_layout_tag = ALAC_CH_LAYOUT_STEREO;
 794                         break;
 795                 }
 796                 ret = q6asm_stream_media_format_block_alac(prtd->audio_client,
 797                                                            &alac_cfg);
 798                 if (ret < 0) {
 799                         dev_err(dev, "ALAC CMD Format block failed:%d\n", ret);
 800                         return -EIO;
 801                 }
 802                 break;
 803
 804         case SND_AUDIOCODEC_APE:
 805                 memset(&ape_cfg, 0x0, sizeof(ape_cfg));
 806                 ape = &codec_options->ape_d;
 807
 808                 ape_cfg.sample_rate = params->codec.sample_rate;
 809                 ape_cfg.num_channels = params->codec.ch_in;
 810                 ape_cfg.bits_per_sample = prtd->bits_per_sample;
 811
 812                 ape_cfg.compatible_version = ape->compatible_version;
 813                 ape_cfg.compression_level = ape->compression_level;
 814                 ape_cfg.format_flags = ape->format_flags;
 815                 ape_cfg.blocks_per_frame = ape->blocks_per_frame;
 816                 ape_cfg.final_frame_blocks = ape->final_frame_blocks;
 817                 ape_cfg.total_frames = ape->total_frames;
 818                 ape_cfg.seek_table_present = ape->seek_table_present;
 819
 820                 ret = q6asm_stream_media_format_block_ape(prtd->audio_client,
 821                                                           &ape_cfg);
 822                 if (ret < 0) {
 823                         dev_err(dev, "APE CMD Format block failed:%d\n", ret);
 824                         return -EIO;
 825                 }
 826                 break;
 827
 828         default:
 829                 break;
 830         }
 831
 832         ret = q6asm_map_memory_regions(dir, prtd->audio_client, prtd->phys,
 833                                        (prtd->pcm_size / prtd->periods),
 834                                        prtd->periods);
 835
 836         if (ret < 0) {
 837                 dev_err(dev, "Buffer Mapping failed ret:%d\n", ret);
 838                 return -ENOMEM;
 839         }
 840
 841         prtd->state = Q6ASM_STREAM_RUNNING;
 842
 843         return 0;
 844 }
 845
 846 static int q6asm_dai_compr_trigger(struct snd_soc_component *component,
 847                                    struct snd_compr_stream *stream, int cmd)
 848 {
 849         struct snd_compr_runtime *runtime = stream->runtime;
 850         struct q6asm_dai_rtd *prtd = runtime->private_data;
 851         int ret = 0;
 852
 853         switch (cmd) {
 854         case SNDRV_PCM_TRIGGER_START:
 855         case SNDRV_PCM_TRIGGER_RESUME:
 856         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 857                 ret = q6asm_run_nowait(prtd->audio_client, 0, 0, 0);
 858                 break;
 859         case SNDRV_PCM_TRIGGER_STOP:
 860                 prtd->state = Q6ASM_STREAM_STOPPED;
 861                 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_EOS);
 862                 break;
 863         case SNDRV_PCM_TRIGGER_SUSPEND:
 864         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 865                 ret = q6asm_cmd_nowait(prtd->audio_client, CMD_PAUSE);
 866                 break;
 867         default:
 868                 ret = -EINVAL;
 869                 break;
 870         }
 871
 872         return ret;
 873 }
 874
 875 static int q6asm_dai_compr_pointer(struct snd_soc_component *component,
 876                                    struct snd_compr_stream *stream,
 877                                    struct snd_compr_tstamp *tstamp)
 878 {
 879         struct snd_compr_runtime *runtime = stream->runtime;
 880         struct q6asm_dai_rtd *prtd = runtime->private_data;
 881         unsigned long flags;
 882
 883         spin_lock_irqsave(&prtd->lock, flags);
 884
 885         tstamp->copied_total = prtd->copied_total;
 886         tstamp->byte_offset = prtd->copied_total % prtd->pcm_size;
 887
 888         spin_unlock_irqrestore(&prtd->lock, flags);
 889
 890         return 0;
 891 }
 892
 893 static int q6asm_dai_compr_ack(struct snd_soc_component *component,
 894                                struct snd_compr_stream *stream,
 895                                size_t count)
 896 {
 897         struct snd_compr_runtime *runtime = stream->runtime;
 898         struct q6asm_dai_rtd *prtd = runtime->private_data;
 899         unsigned long flags;
 900
 901         spin_lock_irqsave(&prtd->lock, flags);
 902         prtd->bytes_received += count;
 903         spin_unlock_irqrestore(&prtd->lock, flags);
 904
 905         return count;
 906 }
 907
 908 static int q6asm_dai_compr_mmap(struct snd_soc_component *component,
 909                                 struct snd_compr_stream *stream,
 910                                 struct vm_area_struct *vma)
 911 {
 912         struct snd_compr_runtime *runtime = stream->runtime;
 913         struct q6asm_dai_rtd *prtd = runtime->private_data;
 914         struct device *dev = component->dev;
 915
 916         return dma_mmap_coherent(dev, vma,
 917                         prtd->dma_buffer.area, prtd->dma_buffer.addr,
 918                         prtd->dma_buffer.bytes);
 919 }
 920
 921 static int q6asm_dai_compr_get_caps(struct snd_soc_component *component,
 922                                     struct snd_compr_stream *stream,
 923                                     struct snd_compr_caps *caps)
 924 {
 925         caps->direction = SND_COMPRESS_PLAYBACK;
 926         caps->min_fragment_size = COMPR_PLAYBACK_MIN_FRAGMENT_SIZE;
 927         caps->max_fragment_size = COMPR_PLAYBACK_MAX_FRAGMENT_SIZE;
 928         caps->min_fragments = COMPR_PLAYBACK_MIN_NUM_FRAGMENTS;
 929         caps->max_fragments = COMPR_PLAYBACK_MAX_NUM_FRAGMENTS;
 930         caps->num_codecs = 5;
 931         caps->codecs[0] = SND_AUDIOCODEC_MP3;
 932         caps->codecs[1] = SND_AUDIOCODEC_FLAC;
 933         caps->codecs[2] = SND_AUDIOCODEC_WMA;
 934         caps->codecs[3] = SND_AUDIOCODEC_ALAC;
 935         caps->codecs[4] = SND_AUDIOCODEC_APE;
 936
 937         return 0;
 938 }
 939
 940 static int q6asm_dai_compr_get_codec_caps(struct snd_soc_component *component,
 941                                           struct snd_compr_stream *stream,
 942                                           struct snd_compr_codec_caps *codec)
 943 {
 944         switch (codec->codec) {
 945         case SND_AUDIOCODEC_MP3:
 946                 *codec = q6asm_compr_caps;
 947                 break;
 948         default:
 949                 break;
 950         }
 951
 952         return 0;
 953 }
 954
 955 static struct snd_compress_ops q6asm_dai_compress_ops = {
 956         .open           = q6asm_dai_compr_open,
 957         .free           = q6asm_dai_compr_free,
 958         .set_params     = q6asm_dai_compr_set_params,
 959         .pointer        = q6asm_dai_compr_pointer,
 960         .trigger        = q6asm_dai_compr_trigger,
 961         .get_caps       = q6asm_dai_compr_get_caps,
 962         .get_codec_caps = q6asm_dai_compr_get_codec_caps,
 963         .mmap           = q6asm_dai_compr_mmap,
 964         .ack            = q6asm_dai_compr_ack,
 965 };
 966
 967 static int q6asm_dai_pcm_new(struct snd_soc_component *component,
 968                              struct snd_soc_pcm_runtime *rtd)
 969 {
 970         struct snd_pcm_substream *psubstream, *csubstream;
 971         struct snd_pcm *pcm = rtd->pcm;
 972         struct device *dev;
 973         int size, ret;
 974
 975         dev = component->dev;
 976         size = q6asm_dai_hardware_playback.buffer_bytes_max;
 977         psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
 978         if (psubstream) {
 979                 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
 980                                           &psubstream->dma_buffer);
 981                 if (ret) {
 982                         dev_err(dev, "Cannot allocate buffer(s)\n");
 983                         return ret;
 984                 }
 985         }
 986
 987         csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
 988         if (csubstream) {
 989                 ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dev, size,
 990                                           &csubstream->dma_buffer);
 991                 if (ret) {
 992                         dev_err(dev, "Cannot allocate buffer(s)\n");
 993                         if (psubstream)
 994                                 snd_dma_free_pages(&psubstream->dma_buffer);
 995                         return ret;
 996                 }
 997         }
 998
 999         return 0;
1000 }
1001
1002 static void q6asm_dai_pcm_free(struct snd_soc_component *component,
1003                                struct snd_pcm *pcm)
1004 {
1005         struct snd_pcm_substream *substream;
1006         int i;
1007
1008         for (i = 0; i < ARRAY_SIZE(pcm->streams); i++) {
1009                 substream = pcm->streams[i].substream;
1010                 if (substream) {
1011                         snd_dma_free_pages(&substream->dma_buffer);
1012                         substream->dma_buffer.area = NULL;
1013                         substream->dma_buffer.addr = 0;
1014                 }
1015         }
1016 }
1017
1018 static const struct snd_soc_component_driver q6asm_fe_dai_component = {
1019         .name           = DRV_NAME,
1020         .open           = q6asm_dai_open,
1021         .hw_params      = q6asm_dai_hw_params,
1022         .close          = q6asm_dai_close,
1023         .prepare        = q6asm_dai_prepare,
1024         .trigger        = q6asm_dai_trigger,
1025         .pointer        = q6asm_dai_pointer,
1026         .mmap           = q6asm_dai_mmap,
1027         .pcm_construct  = q6asm_dai_pcm_new,
1028         .pcm_destruct   = q6asm_dai_pcm_free,
1029         .compress_ops   = &q6asm_dai_compress_ops,
1030 };
1031
1032 static struct snd_soc_dai_driver q6asm_fe_dais_template[] = {
1033         Q6ASM_FEDAI_DRIVER(1),
1034         Q6ASM_FEDAI_DRIVER(2),
1035         Q6ASM_FEDAI_DRIVER(3),
1036         Q6ASM_FEDAI_DRIVER(4),
1037         Q6ASM_FEDAI_DRIVER(5),
1038         Q6ASM_FEDAI_DRIVER(6),
1039         Q6ASM_FEDAI_DRIVER(7),
1040         Q6ASM_FEDAI_DRIVER(8),
1041 };
1042
1043 static int of_q6asm_parse_dai_data(struct device *dev,
1044                                     struct q6asm_dai_data *pdata)
1045 {
1046         struct snd_soc_dai_driver *dai_drv;
1047         struct snd_soc_pcm_stream empty_stream;
1048         struct device_node *node;
1049         int ret, id, dir, idx = 0;
1050
1051
1052         pdata->num_dais = of_get_child_count(dev->of_node);
1053         if (!pdata->num_dais) {
1054                 dev_err(dev, "No dais found in DT\n");
1055                 return -EINVAL;
1056         }
1057
1058         pdata->dais = devm_kcalloc(dev, pdata->num_dais, sizeof(*dai_drv),
1059                                    GFP_KERNEL);
1060         if (!pdata->dais)
1061                 return -ENOMEM;
1062
1063         memset(&empty_stream, 0, sizeof(empty_stream));
1064
1065         for_each_child_of_node(dev->of_node, node) {
1066                 ret = of_property_read_u32(node, "reg", &id);
1067                 if (ret || id >= MAX_SESSIONS || id < 0) {
1068                         dev_err(dev, "valid dai id not found:%d\n", ret);
1069                         continue;
1070                 }
1071
1072                 dai_drv = &pdata->dais[idx++];
1073                 *dai_drv = q6asm_fe_dais_template[id];
1074
1075                 ret = of_property_read_u32(node, "direction", &dir);
1076                 if (ret)
1077                         continue;
1078
1079                 if (dir == Q6ASM_DAI_RX)
1080                         dai_drv->capture = empty_stream;
1081                 else if (dir == Q6ASM_DAI_TX)
1082                         dai_drv->playback = empty_stream;
1083
1084                 if (of_property_read_bool(node, "is-compress-dai"))
1085                         dai_drv->compress_new = snd_soc_new_compress;
1086         }
1087
1088         return 0;
1089 }
1090
1091 static int q6asm_dai_probe(struct platform_device *pdev)
1092 {
1093         struct device *dev = &pdev->dev;
1094         struct device_node *node = dev->of_node;
1095         struct of_phandle_args args;
1096         struct q6asm_dai_data *pdata;
1097         int rc;
1098
1099         pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
1100         if (!pdata)
1101                 return -ENOMEM;
1102
1103         rc = of_parse_phandle_with_fixed_args(node, "iommus", 1, 0, &args);
1104         if (rc < 0)
1105                 pdata->sid = -1;
1106         else
1107                 pdata->sid = args.args[0] & SID_MASK_DEFAULT;
1108
1109         dev_set_drvdata(dev, pdata);
1110
1111         rc = of_q6asm_parse_dai_data(dev, pdata);
1112         if (rc)
1113                 return rc;
1114
1115         return devm_snd_soc_register_component(dev, &q6asm_fe_dai_component,
1116                                                pdata->dais, pdata->num_dais);
1117 }
1118
1119 static const struct of_device_id q6asm_dai_device_id[] = {
1120         { .compatible = "qcom,q6asm-dais" },
1121         {},
1122 };
1123 MODULE_DEVICE_TABLE(of, q6asm_dai_device_id);
1124
1125 static struct platform_driver q6asm_dai_platform_driver = {
1126         .driver = {
1127                 .name = "q6asm-dai",
1128                 .of_match_table = of_match_ptr(q6asm_dai_device_id),
1129         },
1130         .probe = q6asm_dai_probe,
1131 };
1132 module_platform_driver(q6asm_dai_platform_driver);
1133
1134 MODULE_DESCRIPTION("Q6ASM dai driver");
1135 MODULE_LICENSE("GPL v2");