sound/soc/codecs/hdac_hda.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 // Copyright(c) 2015-18 Intel Corporation.
   3
   4 /*
   5  * hdac_hda.c - ASoC extensions to reuse the legacy HDA codec drivers
   6  * with ASoC platform drivers. These APIs are called by the legacy HDA
   7  * codec drivers using hdac_ext_bus_ops ops.
   8  */
   9
  10 #include <linux/init.h>
  11 #include <linux/delay.h>
  12 #include <linux/module.h>
  13 #include <linux/pm_runtime.h>
  14 #include <sound/pcm_params.h>
  15 #include <sound/soc.h>
  16 #include <sound/hdaudio_ext.h>
  17 #include <sound/hda_codec.h>
  18 #include <sound/hda_register.h>
  19 #include "hdac_hda.h"
  20
  21 #define HDAC_ANALOG_DAI_ID              0
  22 #define HDAC_DIGITAL_DAI_ID             1
  23 #define HDAC_ALT_ANALOG_DAI_ID          2
  24
  25 #define STUB_FORMATS    (SNDRV_PCM_FMTBIT_S8 | \
  26                         SNDRV_PCM_FMTBIT_U8 | \
  27                         SNDRV_PCM_FMTBIT_S16_LE | \
  28                         SNDRV_PCM_FMTBIT_U16_LE | \
  29                         SNDRV_PCM_FMTBIT_S24_LE | \
  30                         SNDRV_PCM_FMTBIT_U24_LE | \
  31                         SNDRV_PCM_FMTBIT_S32_LE | \
  32                         SNDRV_PCM_FMTBIT_U32_LE | \
  33                         SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE)
  34
  35 static int hdac_hda_dai_open(struct snd_pcm_substream *substream,
  36                              struct snd_soc_dai *dai);
  37 static void hdac_hda_dai_close(struct snd_pcm_substream *substream,
  38                                struct snd_soc_dai *dai);
  39 static int hdac_hda_dai_prepare(struct snd_pcm_substream *substream,
  40                                 struct snd_soc_dai *dai);
  41 static int hdac_hda_dai_hw_params(struct snd_pcm_substream *substream,
  42                                   struct snd_pcm_hw_params *params,
  43                                   struct snd_soc_dai *dai);
  44 static int hdac_hda_dai_hw_free(struct snd_pcm_substream *substream,
  45                                 struct snd_soc_dai *dai);
  46 static int hdac_hda_dai_set_tdm_slot(struct snd_soc_dai *dai,
  47                                      unsigned int tx_mask, unsigned int rx_mask,
  48                                      int slots, int slot_width);
  49 static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
  50                                                  struct snd_soc_dai *dai);
  51
  52 static const struct snd_soc_dai_ops hdac_hda_dai_ops = {
  53         .startup = hdac_hda_dai_open,
  54         .shutdown = hdac_hda_dai_close,
  55         .prepare = hdac_hda_dai_prepare,
  56         .hw_params = hdac_hda_dai_hw_params,
  57         .hw_free = hdac_hda_dai_hw_free,
  58         .set_tdm_slot = hdac_hda_dai_set_tdm_slot,
  59 };
  60
  61 static struct snd_soc_dai_driver hdac_hda_dais[] = {
  62 {
  63         .id = HDAC_ANALOG_DAI_ID,
  64         .name = "Analog Codec DAI",
  65         .ops = &hdac_hda_dai_ops,
  66         .playback = {
  67                 .stream_name    = "Analog Codec Playback",
  68                 .channels_min   = 1,
  69                 .channels_max   = 16,
  70                 .rates          = SNDRV_PCM_RATE_8000_192000,
  71                 .formats        = STUB_FORMATS,
  72                 .sig_bits       = 24,
  73         },
  74         .capture = {
  75                 .stream_name    = "Analog Codec Capture",
  76                 .channels_min   = 1,
  77                 .channels_max   = 16,
  78                 .rates = SNDRV_PCM_RATE_8000_192000,
  79                 .formats = STUB_FORMATS,
  80                 .sig_bits = 24,
  81         },
  82 },
  83 {
  84         .id = HDAC_DIGITAL_DAI_ID,
  85         .name = "Digital Codec DAI",
  86         .ops = &hdac_hda_dai_ops,
  87         .playback = {
  88                 .stream_name    = "Digital Codec Playback",
  89                 .channels_min   = 1,
  90                 .channels_max   = 16,
  91                 .rates          = SNDRV_PCM_RATE_8000_192000,
  92                 .formats        = STUB_FORMATS,
  93                 .sig_bits = 24,
  94         },
  95         .capture = {
  96                 .stream_name    = "Digital Codec Capture",
  97                 .channels_min   = 1,
  98                 .channels_max   = 16,
  99                 .rates = SNDRV_PCM_RATE_8000_192000,
 100                 .formats = STUB_FORMATS,
 101                 .sig_bits = 24,
 102         },
 103 },
 104 {
 105         .id = HDAC_ALT_ANALOG_DAI_ID,
 106         .name = "Alt Analog Codec DAI",
 107         .ops = &hdac_hda_dai_ops,
 108         .playback = {
 109                 .stream_name    = "Alt Analog Codec Playback",
 110                 .channels_min   = 1,
 111                 .channels_max   = 16,
 112                 .rates          = SNDRV_PCM_RATE_8000_192000,
 113                 .formats        = STUB_FORMATS,
 114                 .sig_bits       = 24,
 115         },
 116         .capture = {
 117                 .stream_name    = "Alt Analog Codec Capture",
 118                 .channels_min   = 1,
 119                 .channels_max   = 16,
 120                 .rates = SNDRV_PCM_RATE_8000_192000,
 121                 .formats = STUB_FORMATS,
 122                 .sig_bits = 24,
 123         },
 124 }
 125
 126 };
 127
 128 static int hdac_hda_dai_set_tdm_slot(struct snd_soc_dai *dai,
 129                                      unsigned int tx_mask, unsigned int rx_mask,
 130                                      int slots, int slot_width)
 131 {
 132         struct snd_soc_component *component = dai->component;
 133         struct hdac_hda_priv *hda_pvt;
 134         struct hdac_hda_pcm *pcm;
 135
 136         hda_pvt = snd_soc_component_get_drvdata(component);
 137         pcm = &hda_pvt->pcm[dai->id];
 138         if (tx_mask)
 139                 pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_PLAYBACK] = tx_mask;
 140         else
 141                 pcm[dai->id].stream_tag[SNDRV_PCM_STREAM_CAPTURE] = rx_mask;
 142
 143         return 0;
 144 }
 145
 146 static int hdac_hda_dai_hw_params(struct snd_pcm_substream *substream,
 147                                   struct snd_pcm_hw_params *params,
 148                                   struct snd_soc_dai *dai)
 149 {
 150         struct snd_soc_component *component = dai->component;
 151         struct hdac_hda_priv *hda_pvt;
 152         unsigned int format_val;
 153         unsigned int maxbps;
 154
 155         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 156                 maxbps = dai->driver->playback.sig_bits;
 157         else
 158                 maxbps = dai->driver->capture.sig_bits;
 159
 160         hda_pvt = snd_soc_component_get_drvdata(component);
 161         format_val = snd_hdac_calc_stream_format(params_rate(params),
 162                                                  params_channels(params),
 163                                                  params_format(params),
 164                                                  maxbps,
 165                                                  0);
 166         if (!format_val) {
 167                 dev_err(dai->dev,
 168                         "invalid format_val, rate=%d, ch=%d, format=%d, maxbps=%d\n",
 169                         params_rate(params), params_channels(params),
 170                         params_format(params), maxbps);
 171
 172                 return -EINVAL;
 173         }
 174
 175         hda_pvt->pcm[dai->id].format_val[substream->stream] = format_val;
 176         return 0;
 177 }
 178
 179 static int hdac_hda_dai_hw_free(struct snd_pcm_substream *substream,
 180                                 struct snd_soc_dai *dai)
 181 {
 182         struct snd_soc_component *component = dai->component;
 183         struct hdac_hda_priv *hda_pvt;
 184         struct hda_pcm_stream *hda_stream;
 185         struct hda_pcm *pcm;
 186
 187         hda_pvt = snd_soc_component_get_drvdata(component);
 188         pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
 189         if (!pcm)
 190                 return -EINVAL;
 191
 192         hda_stream = &pcm->stream[substream->stream];
 193         snd_hda_codec_cleanup(&hda_pvt->codec, hda_stream, substream);
 194
 195         return 0;
 196 }
 197
 198 static int hdac_hda_dai_prepare(struct snd_pcm_substream *substream,
 199                                 struct snd_soc_dai *dai)
 200 {
 201         struct snd_soc_component *component = dai->component;
 202         struct hda_pcm_stream *hda_stream;
 203         struct hdac_hda_priv *hda_pvt;
 204         struct hdac_device *hdev;
 205         unsigned int format_val;
 206         struct hda_pcm *pcm;
 207         unsigned int stream;
 208         int ret = 0;
 209
 210         hda_pvt = snd_soc_component_get_drvdata(component);
 211         hdev = &hda_pvt->codec.core;
 212         pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
 213         if (!pcm)
 214                 return -EINVAL;
 215
 216         hda_stream = &pcm->stream[substream->stream];
 217
 218         stream = hda_pvt->pcm[dai->id].stream_tag[substream->stream];
 219         format_val = hda_pvt->pcm[dai->id].format_val[substream->stream];
 220
 221         ret = snd_hda_codec_prepare(&hda_pvt->codec, hda_stream,
 222                                     stream, format_val, substream);
 223         if (ret < 0)
 224                 dev_err(&hdev->dev, "codec prepare failed %d\n", ret);
 225
 226         return ret;
 227 }
 228
 229 static int hdac_hda_dai_open(struct snd_pcm_substream *substream,
 230                              struct snd_soc_dai *dai)
 231 {
 232         struct snd_soc_component *component = dai->component;
 233         struct hdac_hda_priv *hda_pvt;
 234         struct hda_pcm_stream *hda_stream;
 235         struct hda_pcm *pcm;
 236         int ret;
 237
 238         hda_pvt = snd_soc_component_get_drvdata(component);
 239         pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
 240         if (!pcm)
 241                 return -EINVAL;
 242
 243         snd_hda_codec_pcm_get(pcm);
 244
 245         hda_stream = &pcm->stream[substream->stream];
 246
 247         ret = hda_stream->ops.open(hda_stream, &hda_pvt->codec, substream);
 248         if (ret < 0)
 249                 snd_hda_codec_pcm_put(pcm);
 250
 251         return ret;
 252 }
 253
 254 static void hdac_hda_dai_close(struct snd_pcm_substream *substream,
 255                                struct snd_soc_dai *dai)
 256 {
 257         struct snd_soc_component *component = dai->component;
 258         struct hdac_hda_priv *hda_pvt;
 259         struct hda_pcm_stream *hda_stream;
 260         struct hda_pcm *pcm;
 261
 262         hda_pvt = snd_soc_component_get_drvdata(component);
 263         pcm = snd_soc_find_pcm_from_dai(hda_pvt, dai);
 264         if (!pcm)
 265                 return;
 266
 267         hda_stream = &pcm->stream[substream->stream];
 268
 269         hda_stream->ops.close(hda_stream, &hda_pvt->codec, substream);
 270
 271         snd_hda_codec_pcm_put(pcm);
 272 }
 273
 274 static struct hda_pcm *snd_soc_find_pcm_from_dai(struct hdac_hda_priv *hda_pvt,
 275                                                  struct snd_soc_dai *dai)
 276 {
 277         struct hda_codec *hcodec = &hda_pvt->codec;
 278         struct hda_pcm *cpcm;
 279         const char *pcm_name;
 280
 281         switch (dai->id) {
 282         case HDAC_ANALOG_DAI_ID:
 283                 pcm_name = "Analog";
 284                 break;
 285         case HDAC_DIGITAL_DAI_ID:
 286                 pcm_name = "Digital";
 287                 break;
 288         case HDAC_ALT_ANALOG_DAI_ID:
 289                 pcm_name = "Alt Analog";
 290                 break;
 291         default:
 292                 dev_err(&hcodec->core.dev, "invalid dai id %d\n", dai->id);
 293                 return NULL;
 294         }
 295
 296         list_for_each_entry(cpcm, &hcodec->pcm_list_head, list) {
 297                 if (strpbrk(cpcm->name, pcm_name))
 298                         return cpcm;
 299         }
 300
 301         dev_err(&hcodec->core.dev, "didn't find PCM for DAI %s\n", dai->name);
 302         return NULL;
 303 }
 304
 305 static int hdac_hda_codec_probe(struct snd_soc_component *component)
 306 {
 307         struct hdac_hda_priv *hda_pvt =
 308                         snd_soc_component_get_drvdata(component);
 309         struct snd_soc_dapm_context *dapm =
 310                         snd_soc_component_get_dapm(component);
 311         struct hdac_device *hdev = &hda_pvt->codec.core;
 312         struct hda_codec *hcodec = &hda_pvt->codec;
 313         struct hdac_ext_link *hlink;
 314         hda_codec_patch_t patch;
 315         int ret;
 316
 317         hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
 318         if (!hlink) {
 319                 dev_err(&hdev->dev, "hdac link not found\n");
 320                 return -EIO;
 321         }
 322
 323         snd_hdac_ext_bus_link_get(hdev->bus, hlink);
 324
 325         ret = snd_hda_codec_device_new(hcodec->bus, component->card->snd_card,
 326                                        hdev->addr, hcodec);
 327         if (ret < 0) {
 328                 dev_err(&hdev->dev, "failed to create hda codec %d\n", ret);
 329                 goto error_no_pm;
 330         }
 331
 332         /*
 333          * snd_hda_codec_device_new decrements the usage count so call get pm
 334          * else the device will be powered off
 335          */
 336         pm_runtime_get_noresume(&hdev->dev);
 337
 338         hcodec->bus->card = dapm->card->snd_card;
 339
 340         ret = snd_hda_codec_set_name(hcodec, hcodec->preset->name);
 341         if (ret < 0) {
 342                 dev_err(&hdev->dev, "name failed %s\n", hcodec->preset->name);
 343                 goto error;
 344         }
 345
 346         ret = snd_hdac_regmap_init(&hcodec->core);
 347         if (ret < 0) {
 348                 dev_err(&hdev->dev, "regmap init failed\n");
 349                 goto error;
 350         }
 351
 352         patch = (hda_codec_patch_t)hcodec->preset->driver_data;
 353         if (patch) {
 354                 ret = patch(hcodec);
 355                 if (ret < 0) {
 356                         dev_err(&hdev->dev, "patch failed %d\n", ret);
 357                         goto error;
 358                 }
 359         } else {
 360                 dev_dbg(&hdev->dev, "no patch file found\n");
 361         }
 362
 363         ret = snd_hda_codec_parse_pcms(hcodec);
 364         if (ret < 0) {
 365                 dev_err(&hdev->dev, "unable to map pcms to dai %d\n", ret);
 366                 goto error;
 367         }
 368
 369         ret = snd_hda_codec_build_controls(hcodec);
 370         if (ret < 0) {
 371                 dev_err(&hdev->dev, "unable to create controls %d\n", ret);
 372                 goto error;
 373         }
 374
 375         hcodec->core.lazy_cache = true;
 376
 377         /*
 378          * hdac_device core already sets the state to active and calls
 379          * get_noresume. So enable runtime and set the device to suspend.
 380          * pm_runtime_enable is also called during codec registeration
 381          */
 382         pm_runtime_put(&hdev->dev);
 383         pm_runtime_suspend(&hdev->dev);
 384
 385         return 0;
 386
 387 error:
 388         pm_runtime_put(&hdev->dev);
 389 error_no_pm:
 390         snd_hdac_ext_bus_link_put(hdev->bus, hlink);
 391         return ret;
 392 }
 393
 394 static void hdac_hda_codec_remove(struct snd_soc_component *component)
 395 {
 396         struct hdac_hda_priv *hda_pvt =
 397                       snd_soc_component_get_drvdata(component);
 398         struct hdac_device *hdev = &hda_pvt->codec.core;
 399         struct hdac_ext_link *hlink = NULL;
 400
 401         hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
 402         if (!hlink) {
 403                 dev_err(&hdev->dev, "hdac link not found\n");
 404                 return;
 405         }
 406
 407         snd_hdac_ext_bus_link_put(hdev->bus, hlink);
 408         pm_runtime_disable(&hdev->dev);
 409 }
 410
 411 static const struct snd_soc_dapm_route hdac_hda_dapm_routes[] = {
 412         {"AIF1TX", NULL, "Codec Input Pin1"},
 413         {"AIF2TX", NULL, "Codec Input Pin2"},
 414         {"AIF3TX", NULL, "Codec Input Pin3"},
 415
 416         {"Codec Output Pin1", NULL, "AIF1RX"},
 417         {"Codec Output Pin2", NULL, "AIF2RX"},
 418         {"Codec Output Pin3", NULL, "AIF3RX"},
 419 };
 420
 421 static const struct snd_soc_dapm_widget hdac_hda_dapm_widgets[] = {
 422         /* Audio Interface */
 423         SND_SOC_DAPM_AIF_IN("AIF1RX", "Analog Codec Playback", 0,
 424                             SND_SOC_NOPM, 0, 0),
 425         SND_SOC_DAPM_AIF_IN("AIF2RX", "Digital Codec Playback", 0,
 426                             SND_SOC_NOPM, 0, 0),
 427         SND_SOC_DAPM_AIF_IN("AIF3RX", "Alt Analog Codec Playback", 0,
 428                             SND_SOC_NOPM, 0, 0),
 429         SND_SOC_DAPM_AIF_OUT("AIF1TX", "Analog Codec Capture", 0,
 430                              SND_SOC_NOPM, 0, 0),
 431         SND_SOC_DAPM_AIF_OUT("AIF2TX", "Digital Codec Capture", 0,
 432                              SND_SOC_NOPM, 0, 0),
 433         SND_SOC_DAPM_AIF_OUT("AIF3TX", "Alt Analog Codec Capture", 0,
 434                              SND_SOC_NOPM, 0, 0),
 435
 436         /* Input Pins */
 437         SND_SOC_DAPM_INPUT("Codec Input Pin1"),
 438         SND_SOC_DAPM_INPUT("Codec Input Pin2"),
 439         SND_SOC_DAPM_INPUT("Codec Input Pin3"),
 440
 441         /* Output Pins */
 442         SND_SOC_DAPM_OUTPUT("Codec Output Pin1"),
 443         SND_SOC_DAPM_OUTPUT("Codec Output Pin2"),
 444         SND_SOC_DAPM_OUTPUT("Codec Output Pin3"),
 445 };
 446
 447 static const struct snd_soc_component_driver hdac_hda_codec = {
 448         .probe          = hdac_hda_codec_probe,
 449         .remove         = hdac_hda_codec_remove,
 450         .idle_bias_on   = false,
 451         .dapm_widgets           = hdac_hda_dapm_widgets,
 452         .num_dapm_widgets       = ARRAY_SIZE(hdac_hda_dapm_widgets),
 453         .dapm_routes            = hdac_hda_dapm_routes,
 454         .num_dapm_routes        = ARRAY_SIZE(hdac_hda_dapm_routes),
 455 };
 456
 457 static int hdac_hda_dev_probe(struct hdac_device *hdev)
 458 {
 459         struct hdac_ext_link *hlink;
 460         struct hdac_hda_priv *hda_pvt;
 461         int ret;
 462
 463         /* hold the ref while we probe */
 464         hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
 465         if (!hlink) {
 466                 dev_err(&hdev->dev, "hdac link not found\n");
 467                 return -EIO;
 468         }
 469         snd_hdac_ext_bus_link_get(hdev->bus, hlink);
 470
 471         hda_pvt = hdac_to_hda_priv(hdev);
 472         if (!hda_pvt)
 473                 return -ENOMEM;
 474
 475         /* ASoC specific initialization */
 476         ret = devm_snd_soc_register_component(&hdev->dev,
 477                                          &hdac_hda_codec, hdac_hda_dais,
 478                                          ARRAY_SIZE(hdac_hda_dais));
 479         if (ret < 0) {
 480                 dev_err(&hdev->dev, "failed to register HDA codec %d\n", ret);
 481                 return ret;
 482         }
 483
 484         dev_set_drvdata(&hdev->dev, hda_pvt);
 485         snd_hdac_ext_bus_link_put(hdev->bus, hlink);
 486
 487         return ret;
 488 }
 489
 490 static int hdac_hda_dev_remove(struct hdac_device *hdev)
 491 {
 492         return 0;
 493 }
 494
 495 static struct hdac_ext_bus_ops hdac_ops = {
 496         .hdev_attach = hdac_hda_dev_probe,
 497         .hdev_detach = hdac_hda_dev_remove,
 498 };
 499
 500 struct hdac_ext_bus_ops *snd_soc_hdac_hda_get_ops(void)
 501 {
 502         return &hdac_ops;
 503 }
 504 EXPORT_SYMBOL_GPL(snd_soc_hdac_hda_get_ops);
 505
 506 MODULE_LICENSE("GPL v2");
 507 MODULE_DESCRIPTION("ASoC Extensions for legacy HDA Drivers");
 508 MODULE_AUTHOR("Rakesh Ughreja<rakesh.a.ughreja@intel.com>");