sound/soc/intel/sst-haswell-pcm.c

   1 /*
   2  * Intel SST Haswell/Broadwell PCM Support
   3  *
   4  * Copyright (C) 2013, Intel Corporation. All rights reserved.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License version
   8  * 2 as published by the Free Software Foundation.
   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/module.h>
  18 #include <linux/dma-mapping.h>
  19 #include <linux/slab.h>
  20 #include <linux/delay.h>
  21 #include <asm/page.h>
  22 #include <asm/pgtable.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/pcm_params.h>
  26 #include <sound/dmaengine_pcm.h>
  27 #include <sound/soc.h>
  28 #include <sound/tlv.h>
  29 #include <sound/compress_driver.h>
  30
  31 #include "sst-haswell-ipc.h"
  32 #include "sst-dsp-priv.h"
  33 #include "sst-dsp.h"
  34
  35 #define HSW_PCM_COUNT           6
  36 #define HSW_VOLUME_MAX          0x7FFFFFFF      /* 0dB */
  37
  38 /* simple volume table */
  39 static const u32 volume_map[] = {
  40         HSW_VOLUME_MAX >> 30,
  41         HSW_VOLUME_MAX >> 29,
  42         HSW_VOLUME_MAX >> 28,
  43         HSW_VOLUME_MAX >> 27,
  44         HSW_VOLUME_MAX >> 26,
  45         HSW_VOLUME_MAX >> 25,
  46         HSW_VOLUME_MAX >> 24,
  47         HSW_VOLUME_MAX >> 23,
  48         HSW_VOLUME_MAX >> 22,
  49         HSW_VOLUME_MAX >> 21,
  50         HSW_VOLUME_MAX >> 20,
  51         HSW_VOLUME_MAX >> 19,
  52         HSW_VOLUME_MAX >> 18,
  53         HSW_VOLUME_MAX >> 17,
  54         HSW_VOLUME_MAX >> 16,
  55         HSW_VOLUME_MAX >> 15,
  56         HSW_VOLUME_MAX >> 14,
  57         HSW_VOLUME_MAX >> 13,
  58         HSW_VOLUME_MAX >> 12,
  59         HSW_VOLUME_MAX >> 11,
  60         HSW_VOLUME_MAX >> 10,
  61         HSW_VOLUME_MAX >> 9,
  62         HSW_VOLUME_MAX >> 8,
  63         HSW_VOLUME_MAX >> 7,
  64         HSW_VOLUME_MAX >> 6,
  65         HSW_VOLUME_MAX >> 5,
  66         HSW_VOLUME_MAX >> 4,
  67         HSW_VOLUME_MAX >> 3,
  68         HSW_VOLUME_MAX >> 2,
  69         HSW_VOLUME_MAX >> 1,
  70         HSW_VOLUME_MAX >> 0,
  71 };
  72
  73 #define HSW_PCM_PERIODS_MAX     64
  74 #define HSW_PCM_PERIODS_MIN     2
  75
  76 static const struct snd_pcm_hardware hsw_pcm_hardware = {
  77         .info                   = SNDRV_PCM_INFO_MMAP |
  78                                   SNDRV_PCM_INFO_MMAP_VALID |
  79                                   SNDRV_PCM_INFO_INTERLEAVED |
  80                                   SNDRV_PCM_INFO_PAUSE |
  81                                   SNDRV_PCM_INFO_RESUME |
  82                                   SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
  83         .formats                = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |
  84                                   SNDRV_PCM_FMTBIT_S32_LE,
  85         .period_bytes_min       = PAGE_SIZE,
  86         .period_bytes_max       = (HSW_PCM_PERIODS_MAX / HSW_PCM_PERIODS_MIN) * PAGE_SIZE,
  87         .periods_min            = HSW_PCM_PERIODS_MIN,
  88         .periods_max            = HSW_PCM_PERIODS_MAX,
  89         .buffer_bytes_max       = HSW_PCM_PERIODS_MAX * PAGE_SIZE,
  90 };
  91
  92 /* private data for each PCM DSP stream */
  93 struct hsw_pcm_data {
  94         int dai_id;
  95         struct sst_hsw_stream *stream;
  96         u32 volume[2];
  97         struct snd_pcm_substream *substream;
  98         struct snd_compr_stream *cstream;
  99         unsigned int wpos;
 100         struct mutex mutex;
 101         bool allocated;
 102 };
 103
 104 /* private data for the driver */
 105 struct hsw_priv_data {
 106         /* runtime DSP */
 107         struct sst_hsw *hsw;
 108
 109         /* page tables */
 110         struct snd_dma_buffer dmab[HSW_PCM_COUNT][2];
 111
 112         /* DAI data */
 113         struct hsw_pcm_data pcm[HSW_PCM_COUNT];
 114 };
 115
 116 static u32 hsw_notify_pointer(struct sst_hsw_stream *stream, void *data);
 117
 118 static inline u32 hsw_mixer_to_ipc(unsigned int value)
 119 {
 120         if (value >= ARRAY_SIZE(volume_map))
 121                 return volume_map[0];
 122         else
 123                 return volume_map[value];
 124 }
 125
 126 static inline unsigned int hsw_ipc_to_mixer(u32 value)
 127 {
 128         int i;
 129
 130         for (i = 0; i < ARRAY_SIZE(volume_map); i++) {
 131                 if (volume_map[i] >= value)
 132                         return i;
 133         }
 134
 135         return i - 1;
 136 }
 137
 138 static int hsw_stream_volume_put(struct snd_kcontrol *kcontrol,
 139                                 struct snd_ctl_elem_value *ucontrol)
 140 {
 141         struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
 142         struct soc_mixer_control *mc =
 143                 (struct soc_mixer_control *)kcontrol->private_value;
 144         struct hsw_priv_data *pdata =
 145                 snd_soc_platform_get_drvdata(platform);
 146         struct hsw_pcm_data *pcm_data = &pdata->pcm[mc->reg];
 147         struct sst_hsw *hsw = pdata->hsw;
 148         u32 volume;
 149
 150         mutex_lock(&pcm_data->mutex);
 151
 152         if (!pcm_data->stream) {
 153                 pcm_data->volume[0] =
 154                         hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
 155                 pcm_data->volume[1] =
 156                         hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
 157                 mutex_unlock(&pcm_data->mutex);
 158                 return 0;
 159         }
 160
 161         if (ucontrol->value.integer.value[0] ==
 162                 ucontrol->value.integer.value[1]) {
 163                 volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
 164                 sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 2, volume);
 165         } else {
 166                 volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
 167                 sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 0, volume);
 168                 volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
 169                 sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0, 1, volume);
 170         }
 171
 172         mutex_unlock(&pcm_data->mutex);
 173         return 0;
 174 }
 175
 176 static int hsw_stream_volume_get(struct snd_kcontrol *kcontrol,
 177                                 struct snd_ctl_elem_value *ucontrol)
 178 {
 179         struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
 180         struct soc_mixer_control *mc =
 181                 (struct soc_mixer_control *)kcontrol->private_value;
 182         struct hsw_priv_data *pdata =
 183                 snd_soc_platform_get_drvdata(platform);
 184         struct hsw_pcm_data *pcm_data = &pdata->pcm[mc->reg];
 185         struct sst_hsw *hsw = pdata->hsw;
 186         u32 volume;
 187
 188         mutex_lock(&pcm_data->mutex);
 189
 190         if (!pcm_data->stream) {
 191                 ucontrol->value.integer.value[0] =
 192                         hsw_ipc_to_mixer(pcm_data->volume[0]);
 193                 ucontrol->value.integer.value[1] =
 194                         hsw_ipc_to_mixer(pcm_data->volume[1]);
 195                 mutex_unlock(&pcm_data->mutex);
 196                 return 0;
 197         }
 198
 199         sst_hsw_stream_get_volume(hsw, pcm_data->stream, 0, 0, &volume);
 200         ucontrol->value.integer.value[0] = hsw_ipc_to_mixer(volume);
 201         sst_hsw_stream_get_volume(hsw, pcm_data->stream, 0, 1, &volume);
 202         ucontrol->value.integer.value[1] = hsw_ipc_to_mixer(volume);
 203         mutex_unlock(&pcm_data->mutex);
 204
 205         return 0;
 206 }
 207
 208 static int hsw_volume_put(struct snd_kcontrol *kcontrol,
 209                                 struct snd_ctl_elem_value *ucontrol)
 210 {
 211         struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
 212         struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
 213         struct sst_hsw *hsw = pdata->hsw;
 214         u32 volume;
 215
 216         if (ucontrol->value.integer.value[0] ==
 217                 ucontrol->value.integer.value[1]) {
 218
 219                 volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
 220                 sst_hsw_mixer_set_volume(hsw, 0, 2, volume);
 221
 222         } else {
 223                 volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[0]);
 224                 sst_hsw_mixer_set_volume(hsw, 0, 0, volume);
 225
 226                 volume = hsw_mixer_to_ipc(ucontrol->value.integer.value[1]);
 227                 sst_hsw_mixer_set_volume(hsw, 0, 1, volume);
 228         }
 229
 230         return 0;
 231 }
 232
 233 static int hsw_volume_get(struct snd_kcontrol *kcontrol,
 234                                 struct snd_ctl_elem_value *ucontrol)
 235 {
 236         struct snd_soc_platform *platform = snd_soc_kcontrol_platform(kcontrol);
 237         struct hsw_priv_data *pdata = snd_soc_platform_get_drvdata(platform);
 238         struct sst_hsw *hsw = pdata->hsw;
 239         unsigned int volume = 0;
 240
 241         sst_hsw_mixer_get_volume(hsw, 0, 0, &volume);
 242         ucontrol->value.integer.value[0] = hsw_ipc_to_mixer(volume);
 243
 244         sst_hsw_mixer_get_volume(hsw, 0, 1, &volume);
 245         ucontrol->value.integer.value[1] = hsw_ipc_to_mixer(volume);
 246
 247         return 0;
 248 }
 249
 250 /* TLV used by both global and stream volumes */
 251 static const DECLARE_TLV_DB_SCALE(hsw_vol_tlv, -9000, 300, 1);
 252
 253 /* System Pin has no volume control */
 254 static const struct snd_kcontrol_new hsw_volume_controls[] = {
 255         /* Global DSP volume */
 256         SOC_DOUBLE_EXT_TLV("Master Playback Volume", 0, 0, 8,
 257                 ARRAY_SIZE(volume_map) -1, 0,
 258                 hsw_volume_get, hsw_volume_put, hsw_vol_tlv),
 259         /* Offload 0 volume */
 260         SOC_DOUBLE_EXT_TLV("Media0 Playback Volume", 1, 0, 8,
 261                 ARRAY_SIZE(volume_map), 0,
 262                 hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
 263         /* Offload 1 volume */
 264         SOC_DOUBLE_EXT_TLV("Media1 Playback Volume", 2, 0, 8,
 265                 ARRAY_SIZE(volume_map), 0,
 266                 hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
 267         /* Loopback volume */
 268         SOC_DOUBLE_EXT_TLV("Loopback Capture Volume", 3, 0, 8,
 269                 ARRAY_SIZE(volume_map), 0,
 270                 hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
 271         /* Mic Capture volume */
 272         SOC_DOUBLE_EXT_TLV("Mic Capture Volume", 4, 0, 8,
 273                 ARRAY_SIZE(volume_map), 0,
 274                 hsw_stream_volume_get, hsw_stream_volume_put, hsw_vol_tlv),
 275 };
 276
 277 /* Create DMA buffer page table for DSP */
 278 static int create_adsp_page_table(struct snd_pcm_substream *substream,
 279         struct hsw_priv_data *pdata, struct snd_soc_pcm_runtime *rtd,
 280         unsigned char *dma_area, size_t size, int pcm)
 281 {
 282         struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream);
 283         int i, pages, stream = substream->stream;
 284
 285         pages = snd_sgbuf_aligned_pages(size);
 286
 287         dev_dbg(rtd->dev, "generating page table for %p size 0x%zu pages %d\n",
 288                 dma_area, size, pages);
 289
 290         for (i = 0; i < pages; i++) {
 291                 u32 idx = (((i << 2) + i)) >> 1;
 292                 u32 pfn = snd_sgbuf_get_addr(dmab, i * PAGE_SIZE) >> PAGE_SHIFT;
 293                 u32 *pg_table;
 294
 295                 dev_dbg(rtd->dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn);
 296
 297                 pg_table = (u32 *)(pdata->dmab[pcm][stream].area + idx);
 298
 299                 if (i & 1)
 300                         *pg_table |= (pfn << 4);
 301                 else
 302                         *pg_table |= pfn;
 303         }
 304
 305         return 0;
 306 }
 307
 308 /* this may get called several times by oss emulation */
 309 static int hsw_pcm_hw_params(struct snd_pcm_substream *substream,
 310                               struct snd_pcm_hw_params *params)
 311 {
 312         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 313         struct snd_pcm_runtime *runtime = substream->runtime;
 314         struct hsw_priv_data *pdata =
 315                 snd_soc_platform_get_drvdata(rtd->platform);
 316         struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
 317         struct sst_hsw *hsw = pdata->hsw;
 318         struct sst_module *module_data;
 319         struct sst_dsp *dsp;
 320         struct snd_dma_buffer *dmab;
 321         enum sst_hsw_stream_type stream_type;
 322         enum sst_hsw_stream_path_id path_id;
 323         u32 rate, bits, map, pages, module_id;
 324         u8 channels;
 325         int ret;
 326
 327         /* check if we are being called a subsequent time */
 328         if (pcm_data->allocated) {
 329                 ret = sst_hsw_stream_reset(hsw, pcm_data->stream);
 330                 if (ret < 0)
 331                         dev_dbg(rtd->dev, "error: reset stream failed %d\n",
 332                                 ret);
 333
 334                 ret = sst_hsw_stream_free(hsw, pcm_data->stream);
 335                 if (ret < 0) {
 336                         dev_dbg(rtd->dev, "error: free stream failed %d\n",
 337                                 ret);
 338                         return ret;
 339                 }
 340                 pcm_data->allocated = false;
 341
 342                 pcm_data->stream = sst_hsw_stream_new(hsw, rtd->cpu_dai->id,
 343                         hsw_notify_pointer, pcm_data);
 344                 if (pcm_data->stream == NULL) {
 345                         dev_err(rtd->dev, "error: failed to create stream\n");
 346                         return -EINVAL;
 347                 }
 348         }
 349
 350         /* stream direction */
 351         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 352                 path_id = SST_HSW_STREAM_PATH_SSP0_OUT;
 353         else
 354                 path_id = SST_HSW_STREAM_PATH_SSP0_IN;
 355
 356         /* DSP stream type depends on DAI ID */
 357         switch (rtd->cpu_dai->id) {
 358         case 0:
 359                 stream_type = SST_HSW_STREAM_TYPE_SYSTEM;
 360                 module_id = SST_HSW_MODULE_PCM_SYSTEM;
 361                 break;
 362         case 1:
 363         case 2:
 364                 stream_type = SST_HSW_STREAM_TYPE_RENDER;
 365                 module_id = SST_HSW_MODULE_PCM;
 366                 break;
 367         case 3:
 368                 /* path ID needs to be OUT for loopback */
 369                 stream_type = SST_HSW_STREAM_TYPE_LOOPBACK;
 370                 path_id = SST_HSW_STREAM_PATH_SSP0_OUT;
 371                 module_id = SST_HSW_MODULE_PCM_REFERENCE;
 372                 break;
 373         case 4:
 374                 stream_type = SST_HSW_STREAM_TYPE_CAPTURE;
 375                 module_id = SST_HSW_MODULE_PCM_CAPTURE;
 376                 break;
 377         default:
 378                 dev_err(rtd->dev, "error: invalid DAI ID %d\n",
 379                         rtd->cpu_dai->id);
 380                 return -EINVAL;
 381         };
 382
 383         ret = sst_hsw_stream_format(hsw, pcm_data->stream,
 384                 path_id, stream_type, SST_HSW_STREAM_FORMAT_PCM_FORMAT);
 385         if (ret < 0) {
 386                 dev_err(rtd->dev, "error: failed to set format %d\n", ret);
 387                 return ret;
 388         }
 389
 390         rate = params_rate(params);
 391         ret = sst_hsw_stream_set_rate(hsw, pcm_data->stream, rate);
 392         if (ret < 0) {
 393                 dev_err(rtd->dev, "error: could not set rate %d\n", rate);
 394                 return ret;
 395         }
 396
 397         switch (params_format(params)) {
 398         case SNDRV_PCM_FORMAT_S16_LE:
 399                 bits = SST_HSW_DEPTH_16BIT;
 400                 sst_hsw_stream_set_valid(hsw, pcm_data->stream, 16);
 401                 break;
 402         case SNDRV_PCM_FORMAT_S24_LE:
 403                 bits = SST_HSW_DEPTH_32BIT;
 404                 sst_hsw_stream_set_valid(hsw, pcm_data->stream, 24);
 405                 break;
 406         case SNDRV_PCM_FORMAT_S8:
 407                 bits = SST_HSW_DEPTH_8BIT;
 408                 sst_hsw_stream_set_valid(hsw, pcm_data->stream, 8);
 409                 break;
 410         case SNDRV_PCM_FORMAT_S32_LE:
 411                 bits = SST_HSW_DEPTH_32BIT;
 412                 sst_hsw_stream_set_valid(hsw, pcm_data->stream, 32);
 413                 break;
 414         default:
 415                 dev_err(rtd->dev, "error: invalid format %d\n",
 416                         params_format(params));
 417                 return -EINVAL;
 418         }
 419
 420         ret = sst_hsw_stream_set_bits(hsw, pcm_data->stream, bits);
 421         if (ret < 0) {
 422                 dev_err(rtd->dev, "error: could not set bits %d\n", bits);
 423                 return ret;
 424         }
 425
 426         /* we only support stereo atm */
 427         channels = params_channels(params);
 428         if (channels != 2) {
 429                 dev_err(rtd->dev, "error: invalid channels %d\n", channels);
 430                 return -EINVAL;
 431         }
 432
 433         map = create_channel_map(SST_HSW_CHANNEL_CONFIG_STEREO);
 434         sst_hsw_stream_set_map_config(hsw, pcm_data->stream,
 435                         map, SST_HSW_CHANNEL_CONFIG_STEREO);
 436
 437         ret = sst_hsw_stream_set_channels(hsw, pcm_data->stream, channels);
 438         if (ret < 0) {
 439                 dev_err(rtd->dev, "error: could not set channels %d\n",
 440                         channels);
 441                 return ret;
 442         }
 443
 444         ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
 445         if (ret < 0) {
 446                 dev_err(rtd->dev, "error: could not allocate %d bytes for PCM %d\n",
 447                         params_buffer_bytes(params), ret);
 448                 return ret;
 449         }
 450
 451         dmab = snd_pcm_get_dma_buf(substream);
 452
 453         ret = create_adsp_page_table(substream, pdata, rtd, runtime->dma_area,
 454                 runtime->dma_bytes, rtd->cpu_dai->id);
 455         if (ret < 0)
 456                 return ret;
 457
 458         sst_hsw_stream_set_style(hsw, pcm_data->stream,
 459                 SST_HSW_INTERLEAVING_PER_CHANNEL);
 460
 461         if (runtime->dma_bytes % PAGE_SIZE)
 462                 pages = (runtime->dma_bytes / PAGE_SIZE) + 1;
 463         else
 464                 pages = runtime->dma_bytes / PAGE_SIZE;
 465
 466         ret = sst_hsw_stream_buffer(hsw, pcm_data->stream,
 467                 pdata->dmab[rtd->cpu_dai->id][substream->stream].addr,
 468                 pages, runtime->dma_bytes, 0,
 469                 snd_sgbuf_get_addr(dmab, 0) >> PAGE_SHIFT);
 470         if (ret < 0) {
 471                 dev_err(rtd->dev, "error: failed to set DMA buffer %d\n", ret);
 472                 return ret;
 473         }
 474
 475         dsp = sst_hsw_get_dsp(hsw);
 476
 477         module_data = sst_module_get_from_id(dsp, module_id);
 478         if (module_data == NULL) {
 479                 dev_err(rtd->dev, "error: failed to get module config\n");
 480                 return -EINVAL;
 481         }
 482
 483         /* we use hardcoded memory offsets atm, will be updated for new FW */
 484         if (stream_type == SST_HSW_STREAM_TYPE_CAPTURE) {
 485                 sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
 486                         SST_HSW_MODULE_PCM_CAPTURE, module_data->entry);
 487                 sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
 488                         0x449400, 0x4000);
 489                 sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
 490                         0x400000, 0);
 491         } else { /* stream_type == SST_HSW_STREAM_TYPE_SYSTEM */
 492                 sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
 493                         SST_HSW_MODULE_PCM_SYSTEM, module_data->entry);
 494
 495                 sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
 496                         module_data->offset, module_data->size);
 497                 sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
 498                         0x44d400, 0x3800);
 499
 500                 sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
 501                         module_data->offset, module_data->size);
 502                 sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
 503                         0x400000, 0);
 504         }
 505
 506         ret = sst_hsw_stream_commit(hsw, pcm_data->stream);
 507         if (ret < 0) {
 508                 dev_err(rtd->dev, "error: failed to commit stream %d\n", ret);
 509                 return ret;
 510         }
 511         pcm_data->allocated = true;
 512
 513         ret = sst_hsw_stream_pause(hsw, pcm_data->stream, 1);
 514         if (ret < 0)
 515                 dev_err(rtd->dev, "error: failed to pause %d\n", ret);
 516
 517         return 0;
 518 }
 519
 520 static int hsw_pcm_hw_free(struct snd_pcm_substream *substream)
 521 {
 522         snd_pcm_lib_free_pages(substream);
 523         return 0;
 524 }
 525
 526 static int hsw_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 527 {
 528         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 529         struct hsw_priv_data *pdata =
 530                 snd_soc_platform_get_drvdata(rtd->platform);
 531         struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
 532         struct sst_hsw *hsw = pdata->hsw;
 533
 534         switch (cmd) {
 535         case SNDRV_PCM_TRIGGER_START:
 536         case SNDRV_PCM_TRIGGER_RESUME:
 537         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 538                 sst_hsw_stream_resume(hsw, pcm_data->stream, 0);
 539                 break;
 540         case SNDRV_PCM_TRIGGER_STOP:
 541         case SNDRV_PCM_TRIGGER_SUSPEND:
 542         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 543                 sst_hsw_stream_pause(hsw, pcm_data->stream, 0);
 544                 break;
 545         default:
 546                 break;
 547         }
 548
 549         return 0;
 550 }
 551
 552 static u32 hsw_notify_pointer(struct sst_hsw_stream *stream, void *data)
 553 {
 554         struct hsw_pcm_data *pcm_data = data;
 555         struct snd_pcm_substream *substream = pcm_data->substream;
 556         struct snd_pcm_runtime *runtime = substream->runtime;
 557         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 558         u32 pos;
 559
 560         pos = frames_to_bytes(runtime,
 561                 (runtime->control->appl_ptr % runtime->buffer_size));
 562
 563         dev_dbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
 564
 565         /* let alsa know we have play a period */
 566         snd_pcm_period_elapsed(substream);
 567         return pos;
 568 }
 569
 570 static snd_pcm_uframes_t hsw_pcm_pointer(struct snd_pcm_substream *substream)
 571 {
 572         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 573         struct snd_pcm_runtime *runtime = substream->runtime;
 574         struct hsw_priv_data *pdata =
 575                 snd_soc_platform_get_drvdata(rtd->platform);
 576         struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
 577         struct sst_hsw *hsw = pdata->hsw;
 578         snd_pcm_uframes_t offset;
 579         uint64_t ppos;
 580         u32 position = sst_hsw_get_dsp_position(hsw, pcm_data->stream);
 581
 582         offset = bytes_to_frames(runtime, position);
 583         ppos = sst_hsw_get_dsp_presentation_position(hsw, pcm_data->stream);
 584
 585         dev_dbg(rtd->dev, "PCM: DMA pointer %du bytes, pos %llu\n",
 586                 position, ppos);
 587         return offset;
 588 }
 589
 590 static int hsw_pcm_open(struct snd_pcm_substream *substream)
 591 {
 592         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 593         struct hsw_priv_data *pdata =
 594                 snd_soc_platform_get_drvdata(rtd->platform);
 595         struct hsw_pcm_data *pcm_data;
 596         struct sst_hsw *hsw = pdata->hsw;
 597
 598         pcm_data = &pdata->pcm[rtd->cpu_dai->id];
 599
 600         mutex_lock(&pcm_data->mutex);
 601
 602         snd_soc_pcm_set_drvdata(rtd, pcm_data);
 603         pcm_data->substream = substream;
 604
 605         snd_soc_set_runtime_hwparams(substream, &hsw_pcm_hardware);
 606
 607         pcm_data->stream = sst_hsw_stream_new(hsw, rtd->cpu_dai->id,
 608                 hsw_notify_pointer, pcm_data);
 609         if (pcm_data->stream == NULL) {
 610                 dev_err(rtd->dev, "error: failed to create stream\n");
 611                 mutex_unlock(&pcm_data->mutex);
 612                 return -EINVAL;
 613         }
 614
 615         /* Set previous saved volume */
 616         sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
 617                         0, pcm_data->volume[0]);
 618         sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
 619                         1, pcm_data->volume[1]);
 620
 621         mutex_unlock(&pcm_data->mutex);
 622         return 0;
 623 }
 624
 625 static int hsw_pcm_close(struct snd_pcm_substream *substream)
 626 {
 627         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 628         struct hsw_priv_data *pdata =
 629                 snd_soc_platform_get_drvdata(rtd->platform);
 630         struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
 631         struct sst_hsw *hsw = pdata->hsw;
 632         int ret;
 633
 634         mutex_lock(&pcm_data->mutex);
 635         ret = sst_hsw_stream_reset(hsw, pcm_data->stream);
 636         if (ret < 0) {
 637                 dev_dbg(rtd->dev, "error: reset stream failed %d\n", ret);
 638                 goto out;
 639         }
 640
 641         ret = sst_hsw_stream_free(hsw, pcm_data->stream);
 642         if (ret < 0) {
 643                 dev_dbg(rtd->dev, "error: free stream failed %d\n", ret);
 644                 goto out;
 645         }
 646         pcm_data->allocated = 0;
 647         pcm_data->stream = NULL;
 648
 649 out:
 650         mutex_unlock(&pcm_data->mutex);
 651         return ret;
 652 }
 653
 654 static struct snd_pcm_ops hsw_pcm_ops = {
 655         .open           = hsw_pcm_open,
 656         .close          = hsw_pcm_close,
 657         .ioctl          = snd_pcm_lib_ioctl,
 658         .hw_params      = hsw_pcm_hw_params,
 659         .hw_free        = hsw_pcm_hw_free,
 660         .trigger        = hsw_pcm_trigger,
 661         .pointer        = hsw_pcm_pointer,
 662         .page           = snd_pcm_sgbuf_ops_page,
 663 };
 664
 665 static void hsw_pcm_free(struct snd_pcm *pcm)
 666 {
 667         snd_pcm_lib_preallocate_free_for_all(pcm);
 668 }
 669
 670 static int hsw_pcm_new(struct snd_soc_pcm_runtime *rtd)
 671 {
 672         struct snd_pcm *pcm = rtd->pcm;
 673         struct snd_soc_platform *platform = rtd->platform;
 674         struct sst_pdata *pdata = dev_get_platdata(platform->dev);
 675         struct device *dev = pdata->dma_dev;
 676         int ret = 0;
 677
 678         if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
 679                         pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
 680                 ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
 681                         SNDRV_DMA_TYPE_DEV_SG,
 682                         dev,
 683                         hsw_pcm_hardware.buffer_bytes_max,
 684                         hsw_pcm_hardware.buffer_bytes_max);
 685                 if (ret) {
 686                         dev_err(rtd->dev, "dma buffer allocation failed %d\n",
 687                                 ret);
 688                         return ret;
 689                 }
 690         }
 691
 692         return ret;
 693 }
 694
 695 #define HSW_FORMATS \
 696         (SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S24_LE | \
 697         SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE |\
 698         SNDRV_PCM_FMTBIT_S8)
 699
 700 static struct snd_soc_dai_driver hsw_dais[] = {
 701         {
 702                 .name  = "System Pin",
 703                 .playback = {
 704                         .stream_name = "System Playback",
 705                         .channels_min = 2,
 706                         .channels_max = 2,
 707                         .rates = SNDRV_PCM_RATE_48000,
 708                         .formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE,
 709                 },
 710         },
 711         {
 712                 /* PCM */
 713                 .name  = "Offload0 Pin",
 714                 .playback = {
 715                         .stream_name = "Offload0 Playback",
 716                         .channels_min = 2,
 717                         .channels_max = 2,
 718                         .rates = SNDRV_PCM_RATE_8000_192000,
 719                         .formats = HSW_FORMATS,
 720                 },
 721         },
 722         {
 723                 /* PCM */
 724                 .name  = "Offload1 Pin",
 725                 .playback = {
 726                         .stream_name = "Offload1 Playback",
 727                         .channels_min = 2,
 728                         .channels_max = 2,
 729                         .rates = SNDRV_PCM_RATE_8000_192000,
 730                         .formats = HSW_FORMATS,
 731                 },
 732         },
 733         {
 734                 .name  = "Loopback Pin",
 735                 .capture = {
 736                         .stream_name = "Loopback Capture",
 737                         .channels_min = 2,
 738                         .channels_max = 2,
 739                         .rates = SNDRV_PCM_RATE_48000,
 740                         .formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE,
 741                 },
 742         },
 743         {
 744                 .name  = "Capture Pin",
 745                 .capture = {
 746                         .stream_name = "Analog Capture",
 747                         .channels_min = 2,
 748                         .channels_max = 2,
 749                         .rates = SNDRV_PCM_RATE_48000,
 750                         .formats = SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S16_LE,
 751                 },
 752         },
 753 };
 754
 755 static const struct snd_soc_dapm_widget widgets[] = {
 756
 757         /* Backend DAIs  */
 758         SND_SOC_DAPM_AIF_IN("SSP0 CODEC IN", NULL, 0, SND_SOC_NOPM, 0, 0),
 759         SND_SOC_DAPM_AIF_OUT("SSP0 CODEC OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
 760         SND_SOC_DAPM_AIF_IN("SSP1 BT IN", NULL, 0, SND_SOC_NOPM, 0, 0),
 761         SND_SOC_DAPM_AIF_OUT("SSP1 BT OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
 762
 763         /* Global Playback Mixer */
 764         SND_SOC_DAPM_MIXER("Playback VMixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 765 };
 766
 767 static const struct snd_soc_dapm_route graph[] = {
 768
 769         /* Playback Mixer */
 770         {"Playback VMixer", NULL, "System Playback"},
 771         {"Playback VMixer", NULL, "Offload0 Playback"},
 772         {"Playback VMixer", NULL, "Offload1 Playback"},
 773
 774         {"SSP0 CODEC OUT", NULL, "Playback VMixer"},
 775
 776         {"Analog Capture", NULL, "SSP0 CODEC IN"},
 777 };
 778
 779 static int hsw_pcm_probe(struct snd_soc_platform *platform)
 780 {
 781         struct sst_pdata *pdata = dev_get_platdata(platform->dev);
 782         struct hsw_priv_data *priv_data;
 783         struct device *dma_dev;
 784         int i, ret = 0;
 785
 786         if (!pdata)
 787                 return -ENODEV;
 788
 789         dma_dev = pdata->dma_dev;
 790
 791         priv_data = devm_kzalloc(platform->dev, sizeof(*priv_data), GFP_KERNEL);
 792         priv_data->hsw = pdata->dsp;
 793         snd_soc_platform_set_drvdata(platform, priv_data);
 794
 795         /* allocate DSP buffer page tables */
 796         for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
 797
 798                 mutex_init(&priv_data->pcm[i].mutex);
 799
 800                 /* playback */
 801                 if (hsw_dais[i].playback.channels_min) {
 802                         ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dma_dev,
 803                                 PAGE_SIZE, &priv_data->dmab[i][0]);
 804                         if (ret < 0)
 805                                 goto err;
 806                 }
 807
 808                 /* capture */
 809                 if (hsw_dais[i].capture.channels_min) {
 810                         ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dma_dev,
 811                                 PAGE_SIZE, &priv_data->dmab[i][1]);
 812                         if (ret < 0)
 813                                 goto err;
 814                 }
 815         }
 816
 817         return 0;
 818
 819 err:
 820         for (;i >= 0; i--) {
 821                 if (hsw_dais[i].playback.channels_min)
 822                         snd_dma_free_pages(&priv_data->dmab[i][0]);
 823                 if (hsw_dais[i].capture.channels_min)
 824                         snd_dma_free_pages(&priv_data->dmab[i][1]);
 825         }
 826         return ret;
 827 }
 828
 829 static int hsw_pcm_remove(struct snd_soc_platform *platform)
 830 {
 831         struct hsw_priv_data *priv_data =
 832                 snd_soc_platform_get_drvdata(platform);
 833         int i;
 834
 835         for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
 836                 if (hsw_dais[i].playback.channels_min)
 837                         snd_dma_free_pages(&priv_data->dmab[i][0]);
 838                 if (hsw_dais[i].capture.channels_min)
 839                         snd_dma_free_pages(&priv_data->dmab[i][1]);
 840         }
 841
 842         return 0;
 843 }
 844
 845 static struct snd_soc_platform_driver hsw_soc_platform = {
 846         .probe          = hsw_pcm_probe,
 847         .remove         = hsw_pcm_remove,
 848         .ops            = &hsw_pcm_ops,
 849         .pcm_new        = hsw_pcm_new,
 850         .pcm_free       = hsw_pcm_free,
 851         .controls       = hsw_volume_controls,
 852         .num_controls   = ARRAY_SIZE(hsw_volume_controls),
 853         .dapm_widgets   = widgets,
 854         .num_dapm_widgets       = ARRAY_SIZE(widgets),
 855         .dapm_routes    = graph,
 856         .num_dapm_routes        = ARRAY_SIZE(graph),
 857 };
 858
 859 static const struct snd_soc_component_driver hsw_dai_component = {
 860         .name           = "haswell-dai",
 861 };
 862
 863 static int hsw_pcm_dev_probe(struct platform_device *pdev)
 864 {
 865         struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
 866         int ret;
 867
 868         ret = sst_hsw_dsp_init(&pdev->dev, sst_pdata);
 869         if (ret < 0)
 870                 return -ENODEV;
 871
 872         ret = snd_soc_register_platform(&pdev->dev, &hsw_soc_platform);
 873         if (ret < 0)
 874                 goto err_plat;
 875
 876         ret = snd_soc_register_component(&pdev->dev, &hsw_dai_component,
 877                 hsw_dais, ARRAY_SIZE(hsw_dais));
 878         if (ret < 0)
 879                 goto err_comp;
 880
 881         return 0;
 882
 883 err_comp:
 884         snd_soc_unregister_platform(&pdev->dev);
 885 err_plat:
 886         sst_hsw_dsp_free(&pdev->dev, sst_pdata);
 887         return 0;
 888 }
 889
 890 static int hsw_pcm_dev_remove(struct platform_device *pdev)
 891 {
 892         struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
 893
 894         snd_soc_unregister_platform(&pdev->dev);
 895         snd_soc_unregister_component(&pdev->dev);
 896         sst_hsw_dsp_free(&pdev->dev, sst_pdata);
 897
 898         return 0;
 899 }
 900
 901 static struct platform_driver hsw_pcm_driver = {
 902         .driver = {
 903                 .name = "haswell-pcm-audio",
 904                 .owner = THIS_MODULE,
 905         },
 906
 907         .probe = hsw_pcm_dev_probe,
 908         .remove = hsw_pcm_dev_remove,
 909 };
 910 module_platform_driver(hsw_pcm_driver);
 911
 912 MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
 913 MODULE_DESCRIPTION("Haswell/Lynxpoint + Broadwell/Wildcatpoint PCM");
 914 MODULE_LICENSE("GPL v2");
 915 MODULE_ALIAS("platform:haswell-pcm-audio");