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_FORMAT_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_24BIT;
 404                 sst_hsw_stream_set_valid(hsw, pcm_data->stream, 32);
 405                 break;
 406         default:
 407                 dev_err(rtd->dev, "error: invalid format %d\n",
 408                         params_format(params));
 409                 return -EINVAL;
 410         }
 411
 412         ret = sst_hsw_stream_set_bits(hsw, pcm_data->stream, bits);
 413         if (ret < 0) {
 414                 dev_err(rtd->dev, "error: could not set bits %d\n", bits);
 415                 return ret;
 416         }
 417
 418         /* we only support stereo atm */
 419         channels = params_channels(params);
 420         if (channels != 2) {
 421                 dev_err(rtd->dev, "error: invalid channels %d\n", channels);
 422                 return -EINVAL;
 423         }
 424
 425         map = create_channel_map(SST_HSW_CHANNEL_CONFIG_STEREO);
 426         sst_hsw_stream_set_map_config(hsw, pcm_data->stream,
 427                         map, SST_HSW_CHANNEL_CONFIG_STEREO);
 428
 429         ret = sst_hsw_stream_set_channels(hsw, pcm_data->stream, channels);
 430         if (ret < 0) {
 431                 dev_err(rtd->dev, "error: could not set channels %d\n",
 432                         channels);
 433                 return ret;
 434         }
 435
 436         ret = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
 437         if (ret < 0) {
 438                 dev_err(rtd->dev, "error: could not allocate %d bytes for PCM %d\n",
 439                         params_buffer_bytes(params), ret);
 440                 return ret;
 441         }
 442
 443         dmab = snd_pcm_get_dma_buf(substream);
 444
 445         ret = create_adsp_page_table(substream, pdata, rtd, runtime->dma_area,
 446                 runtime->dma_bytes, rtd->cpu_dai->id);
 447         if (ret < 0)
 448                 return ret;
 449
 450         sst_hsw_stream_set_style(hsw, pcm_data->stream,
 451                 SST_HSW_INTERLEAVING_PER_CHANNEL);
 452
 453         if (runtime->dma_bytes % PAGE_SIZE)
 454                 pages = (runtime->dma_bytes / PAGE_SIZE) + 1;
 455         else
 456                 pages = runtime->dma_bytes / PAGE_SIZE;
 457
 458         ret = sst_hsw_stream_buffer(hsw, pcm_data->stream,
 459                 pdata->dmab[rtd->cpu_dai->id][substream->stream].addr,
 460                 pages, runtime->dma_bytes, 0,
 461                 snd_sgbuf_get_addr(dmab, 0) >> PAGE_SHIFT);
 462         if (ret < 0) {
 463                 dev_err(rtd->dev, "error: failed to set DMA buffer %d\n", ret);
 464                 return ret;
 465         }
 466
 467         dsp = sst_hsw_get_dsp(hsw);
 468
 469         module_data = sst_module_get_from_id(dsp, module_id);
 470         if (module_data == NULL) {
 471                 dev_err(rtd->dev, "error: failed to get module config\n");
 472                 return -EINVAL;
 473         }
 474
 475         /* we use hardcoded memory offsets atm, will be updated for new FW */
 476         if (stream_type == SST_HSW_STREAM_TYPE_CAPTURE) {
 477                 sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
 478                         SST_HSW_MODULE_PCM_CAPTURE, module_data->entry);
 479                 sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
 480                         0x449400, 0x4000);
 481                 sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
 482                         0x400000, 0);
 483         } else { /* stream_type == SST_HSW_STREAM_TYPE_SYSTEM */
 484                 sst_hsw_stream_set_module_info(hsw, pcm_data->stream,
 485                         SST_HSW_MODULE_PCM_SYSTEM, module_data->entry);
 486
 487                 sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
 488                         module_data->offset, module_data->size);
 489                 sst_hsw_stream_set_pmemory_info(hsw, pcm_data->stream,
 490                         0x44d400, 0x3800);
 491
 492                 sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
 493                         module_data->offset, module_data->size);
 494                 sst_hsw_stream_set_smemory_info(hsw, pcm_data->stream,
 495                         0x400000, 0);
 496         }
 497
 498         ret = sst_hsw_stream_commit(hsw, pcm_data->stream);
 499         if (ret < 0) {
 500                 dev_err(rtd->dev, "error: failed to commit stream %d\n", ret);
 501                 return ret;
 502         }
 503         pcm_data->allocated = true;
 504
 505         ret = sst_hsw_stream_pause(hsw, pcm_data->stream, 1);
 506         if (ret < 0)
 507                 dev_err(rtd->dev, "error: failed to pause %d\n", ret);
 508
 509         return 0;
 510 }
 511
 512 static int hsw_pcm_hw_free(struct snd_pcm_substream *substream)
 513 {
 514         snd_pcm_lib_free_pages(substream);
 515         return 0;
 516 }
 517
 518 static int hsw_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 519 {
 520         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 521         struct hsw_priv_data *pdata =
 522                 snd_soc_platform_get_drvdata(rtd->platform);
 523         struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
 524         struct sst_hsw *hsw = pdata->hsw;
 525
 526         switch (cmd) {
 527         case SNDRV_PCM_TRIGGER_START:
 528         case SNDRV_PCM_TRIGGER_RESUME:
 529         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 530                 sst_hsw_stream_resume(hsw, pcm_data->stream, 0);
 531                 break;
 532         case SNDRV_PCM_TRIGGER_STOP:
 533         case SNDRV_PCM_TRIGGER_SUSPEND:
 534         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 535                 sst_hsw_stream_pause(hsw, pcm_data->stream, 0);
 536                 break;
 537         default:
 538                 break;
 539         }
 540
 541         return 0;
 542 }
 543
 544 static u32 hsw_notify_pointer(struct sst_hsw_stream *stream, void *data)
 545 {
 546         struct hsw_pcm_data *pcm_data = data;
 547         struct snd_pcm_substream *substream = pcm_data->substream;
 548         struct snd_pcm_runtime *runtime = substream->runtime;
 549         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 550         u32 pos;
 551
 552         pos = frames_to_bytes(runtime,
 553                 (runtime->control->appl_ptr % runtime->buffer_size));
 554
 555         dev_dbg(rtd->dev, "PCM: App pointer %d bytes\n", pos);
 556
 557         /* let alsa know we have play a period */
 558         snd_pcm_period_elapsed(substream);
 559         return pos;
 560 }
 561
 562 static snd_pcm_uframes_t hsw_pcm_pointer(struct snd_pcm_substream *substream)
 563 {
 564         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 565         struct snd_pcm_runtime *runtime = substream->runtime;
 566         struct hsw_priv_data *pdata =
 567                 snd_soc_platform_get_drvdata(rtd->platform);
 568         struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
 569         struct sst_hsw *hsw = pdata->hsw;
 570         snd_pcm_uframes_t offset;
 571         uint64_t ppos;
 572         u32 position = sst_hsw_get_dsp_position(hsw, pcm_data->stream);
 573
 574         offset = bytes_to_frames(runtime, position);
 575         ppos = sst_hsw_get_dsp_presentation_position(hsw, pcm_data->stream);
 576
 577         dev_dbg(rtd->dev, "PCM: DMA pointer %du bytes, pos %llu\n",
 578                 position, ppos);
 579         return offset;
 580 }
 581
 582 static int hsw_pcm_open(struct snd_pcm_substream *substream)
 583 {
 584         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 585         struct hsw_priv_data *pdata =
 586                 snd_soc_platform_get_drvdata(rtd->platform);
 587         struct hsw_pcm_data *pcm_data;
 588         struct sst_hsw *hsw = pdata->hsw;
 589
 590         pcm_data = &pdata->pcm[rtd->cpu_dai->id];
 591
 592         mutex_lock(&pcm_data->mutex);
 593
 594         snd_soc_pcm_set_drvdata(rtd, pcm_data);
 595         pcm_data->substream = substream;
 596
 597         snd_soc_set_runtime_hwparams(substream, &hsw_pcm_hardware);
 598
 599         pcm_data->stream = sst_hsw_stream_new(hsw, rtd->cpu_dai->id,
 600                 hsw_notify_pointer, pcm_data);
 601         if (pcm_data->stream == NULL) {
 602                 dev_err(rtd->dev, "error: failed to create stream\n");
 603                 mutex_unlock(&pcm_data->mutex);
 604                 return -EINVAL;
 605         }
 606
 607         /* Set previous saved volume */
 608         sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
 609                         0, pcm_data->volume[0]);
 610         sst_hsw_stream_set_volume(hsw, pcm_data->stream, 0,
 611                         1, pcm_data->volume[1]);
 612
 613         mutex_unlock(&pcm_data->mutex);
 614         return 0;
 615 }
 616
 617 static int hsw_pcm_close(struct snd_pcm_substream *substream)
 618 {
 619         struct snd_soc_pcm_runtime *rtd = substream->private_data;
 620         struct hsw_priv_data *pdata =
 621                 snd_soc_platform_get_drvdata(rtd->platform);
 622         struct hsw_pcm_data *pcm_data = snd_soc_pcm_get_drvdata(rtd);
 623         struct sst_hsw *hsw = pdata->hsw;
 624         int ret;
 625
 626         mutex_lock(&pcm_data->mutex);
 627         ret = sst_hsw_stream_reset(hsw, pcm_data->stream);
 628         if (ret < 0) {
 629                 dev_dbg(rtd->dev, "error: reset stream failed %d\n", ret);
 630                 goto out;
 631         }
 632
 633         ret = sst_hsw_stream_free(hsw, pcm_data->stream);
 634         if (ret < 0) {
 635                 dev_dbg(rtd->dev, "error: free stream failed %d\n", ret);
 636                 goto out;
 637         }
 638         pcm_data->allocated = 0;
 639         pcm_data->stream = NULL;
 640
 641 out:
 642         mutex_unlock(&pcm_data->mutex);
 643         return ret;
 644 }
 645
 646 static struct snd_pcm_ops hsw_pcm_ops = {
 647         .open           = hsw_pcm_open,
 648         .close          = hsw_pcm_close,
 649         .ioctl          = snd_pcm_lib_ioctl,
 650         .hw_params      = hsw_pcm_hw_params,
 651         .hw_free        = hsw_pcm_hw_free,
 652         .trigger        = hsw_pcm_trigger,
 653         .pointer        = hsw_pcm_pointer,
 654         .page           = snd_pcm_sgbuf_ops_page,
 655 };
 656
 657 static void hsw_pcm_free(struct snd_pcm *pcm)
 658 {
 659         snd_pcm_lib_preallocate_free_for_all(pcm);
 660 }
 661
 662 static int hsw_pcm_new(struct snd_soc_pcm_runtime *rtd)
 663 {
 664         struct snd_pcm *pcm = rtd->pcm;
 665         struct snd_soc_platform *platform = rtd->platform;
 666         struct sst_pdata *pdata = dev_get_platdata(platform->dev);
 667         struct device *dev = pdata->dma_dev;
 668         int ret = 0;
 669
 670         if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
 671                         pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
 672                 ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
 673                         SNDRV_DMA_TYPE_DEV_SG,
 674                         dev,
 675                         hsw_pcm_hardware.buffer_bytes_max,
 676                         hsw_pcm_hardware.buffer_bytes_max);
 677                 if (ret) {
 678                         dev_err(rtd->dev, "dma buffer allocation failed %d\n",
 679                                 ret);
 680                         return ret;
 681                 }
 682         }
 683
 684         return ret;
 685 }
 686
 687 #define HSW_FORMATS \
 688         (SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S16_LE |\
 689          SNDRV_PCM_FMTBIT_S32_LE)
 690
 691 static struct snd_soc_dai_driver hsw_dais[] = {
 692         {
 693                 .name  = "System Pin",
 694                 .playback = {
 695                         .stream_name = "System Playback",
 696                         .channels_min = 2,
 697                         .channels_max = 2,
 698                         .rates = SNDRV_PCM_RATE_48000,
 699                         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 700                 },
 701         },
 702         {
 703                 /* PCM */
 704                 .name  = "Offload0 Pin",
 705                 .playback = {
 706                         .stream_name = "Offload0 Playback",
 707                         .channels_min = 2,
 708                         .channels_max = 2,
 709                         .rates = SNDRV_PCM_RATE_8000_192000,
 710                         .formats = HSW_FORMATS,
 711                 },
 712         },
 713         {
 714                 /* PCM */
 715                 .name  = "Offload1 Pin",
 716                 .playback = {
 717                         .stream_name = "Offload1 Playback",
 718                         .channels_min = 2,
 719                         .channels_max = 2,
 720                         .rates = SNDRV_PCM_RATE_8000_192000,
 721                         .formats = HSW_FORMATS,
 722                 },
 723         },
 724         {
 725                 .name  = "Loopback Pin",
 726                 .capture = {
 727                         .stream_name = "Loopback Capture",
 728                         .channels_min = 2,
 729                         .channels_max = 2,
 730                         .rates = SNDRV_PCM_RATE_8000_192000,
 731                         .formats = HSW_FORMATS,
 732                 },
 733         },
 734         {
 735                 .name  = "Capture Pin",
 736                 .capture = {
 737                         .stream_name = "Analog Capture",
 738                         .channels_min = 2,
 739                         .channels_max = 2,
 740                         .rates = SNDRV_PCM_RATE_8000_192000,
 741                         .formats = HSW_FORMATS,
 742                 },
 743         },
 744 };
 745
 746 static const struct snd_soc_dapm_widget widgets[] = {
 747
 748         /* Backend DAIs  */
 749         SND_SOC_DAPM_AIF_IN("SSP0 CODEC IN", NULL, 0, SND_SOC_NOPM, 0, 0),
 750         SND_SOC_DAPM_AIF_OUT("SSP0 CODEC OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
 751         SND_SOC_DAPM_AIF_IN("SSP1 BT IN", NULL, 0, SND_SOC_NOPM, 0, 0),
 752         SND_SOC_DAPM_AIF_OUT("SSP1 BT OUT", NULL, 0, SND_SOC_NOPM, 0, 0),
 753
 754         /* Global Playback Mixer */
 755         SND_SOC_DAPM_MIXER("Playback VMixer", SND_SOC_NOPM, 0, 0, NULL, 0),
 756 };
 757
 758 static const struct snd_soc_dapm_route graph[] = {
 759
 760         /* Playback Mixer */
 761         {"Playback VMixer", NULL, "System Playback"},
 762         {"Playback VMixer", NULL, "Offload0 Playback"},
 763         {"Playback VMixer", NULL, "Offload1 Playback"},
 764
 765         {"SSP0 CODEC OUT", NULL, "Playback VMixer"},
 766
 767         {"Analog Capture", NULL, "SSP0 CODEC IN"},
 768 };
 769
 770 static int hsw_pcm_probe(struct snd_soc_platform *platform)
 771 {
 772         struct sst_pdata *pdata = dev_get_platdata(platform->dev);
 773         struct hsw_priv_data *priv_data;
 774         struct device *dma_dev;
 775         int i, ret = 0;
 776
 777         if (!pdata)
 778                 return -ENODEV;
 779
 780         dma_dev = pdata->dma_dev;
 781
 782         priv_data = devm_kzalloc(platform->dev, sizeof(*priv_data), GFP_KERNEL);
 783         priv_data->hsw = pdata->dsp;
 784         snd_soc_platform_set_drvdata(platform, priv_data);
 785
 786         /* allocate DSP buffer page tables */
 787         for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
 788
 789                 mutex_init(&priv_data->pcm[i].mutex);
 790
 791                 /* playback */
 792                 if (hsw_dais[i].playback.channels_min) {
 793                         ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dma_dev,
 794                                 PAGE_SIZE, &priv_data->dmab[i][0]);
 795                         if (ret < 0)
 796                                 goto err;
 797                 }
 798
 799                 /* capture */
 800                 if (hsw_dais[i].capture.channels_min) {
 801                         ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, dma_dev,
 802                                 PAGE_SIZE, &priv_data->dmab[i][1]);
 803                         if (ret < 0)
 804                                 goto err;
 805                 }
 806         }
 807
 808         return 0;
 809
 810 err:
 811         for (;i >= 0; i--) {
 812                 if (hsw_dais[i].playback.channels_min)
 813                         snd_dma_free_pages(&priv_data->dmab[i][0]);
 814                 if (hsw_dais[i].capture.channels_min)
 815                         snd_dma_free_pages(&priv_data->dmab[i][1]);
 816         }
 817         return ret;
 818 }
 819
 820 static int hsw_pcm_remove(struct snd_soc_platform *platform)
 821 {
 822         struct hsw_priv_data *priv_data =
 823                 snd_soc_platform_get_drvdata(platform);
 824         int i;
 825
 826         for (i = 0; i < ARRAY_SIZE(hsw_dais); i++) {
 827                 if (hsw_dais[i].playback.channels_min)
 828                         snd_dma_free_pages(&priv_data->dmab[i][0]);
 829                 if (hsw_dais[i].capture.channels_min)
 830                         snd_dma_free_pages(&priv_data->dmab[i][1]);
 831         }
 832
 833         return 0;
 834 }
 835
 836 static struct snd_soc_platform_driver hsw_soc_platform = {
 837         .probe          = hsw_pcm_probe,
 838         .remove         = hsw_pcm_remove,
 839         .ops            = &hsw_pcm_ops,
 840         .pcm_new        = hsw_pcm_new,
 841         .pcm_free       = hsw_pcm_free,
 842         .controls       = hsw_volume_controls,
 843         .num_controls   = ARRAY_SIZE(hsw_volume_controls),
 844         .dapm_widgets   = widgets,
 845         .num_dapm_widgets       = ARRAY_SIZE(widgets),
 846         .dapm_routes    = graph,
 847         .num_dapm_routes        = ARRAY_SIZE(graph),
 848 };
 849
 850 static const struct snd_soc_component_driver hsw_dai_component = {
 851         .name           = "haswell-dai",
 852 };
 853
 854 static int hsw_pcm_dev_probe(struct platform_device *pdev)
 855 {
 856         struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
 857         int ret;
 858
 859         ret = sst_hsw_dsp_init(&pdev->dev, sst_pdata);
 860         if (ret < 0)
 861                 return -ENODEV;
 862
 863         ret = snd_soc_register_platform(&pdev->dev, &hsw_soc_platform);
 864         if (ret < 0)
 865                 goto err_plat;
 866
 867         ret = snd_soc_register_component(&pdev->dev, &hsw_dai_component,
 868                 hsw_dais, ARRAY_SIZE(hsw_dais));
 869         if (ret < 0)
 870                 goto err_comp;
 871
 872         return 0;
 873
 874 err_comp:
 875         snd_soc_unregister_platform(&pdev->dev);
 876 err_plat:
 877         sst_hsw_dsp_free(&pdev->dev, sst_pdata);
 878         return 0;
 879 }
 880
 881 static int hsw_pcm_dev_remove(struct platform_device *pdev)
 882 {
 883         struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
 884
 885         snd_soc_unregister_platform(&pdev->dev);
 886         snd_soc_unregister_component(&pdev->dev);
 887         sst_hsw_dsp_free(&pdev->dev, sst_pdata);
 888
 889         return 0;
 890 }
 891
 892 static struct platform_driver hsw_pcm_driver = {
 893         .driver = {
 894                 .name = "haswell-pcm-audio",
 895                 .owner = THIS_MODULE,
 896         },
 897
 898         .probe = hsw_pcm_dev_probe,
 899         .remove = hsw_pcm_dev_remove,
 900 };
 901 module_platform_driver(hsw_pcm_driver);
 902
 903 MODULE_AUTHOR("Liam Girdwood, Xingchao Wang");
 904 MODULE_DESCRIPTION("Haswell/Lynxpoint + Broadwell/Wildcatpoint PCM");
 905 MODULE_LICENSE("GPL v2");
 906 MODULE_ALIAS("platform:haswell-pcm-audio");