sound/soc/codecs/hdac_hdmi.c

   1 /*
   2  *  hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms
   3  *
   4  *  Copyright (C) 2014-2015 Intel Corp
   5  *  Author: Samreen Nilofer <samreen.nilofer@intel.com>
   6  *          Subhransu S. Prusty <subhransu.s.prusty@intel.com>
   7  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; version 2 of the License.
  12  *
  13  *  This program is distributed in the hope that it will be useful, but
  14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  General Public License for more details.
  17  *
  18  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  19  */
  20 #include <linux/init.h>
  21 #include <linux/delay.h>
  22 #include <linux/module.h>
  23 #include <linux/pm_runtime.h>
  24 #include <linux/hdmi.h>
  25 #include <drm/drm_edid.h>
  26 #include <sound/pcm_params.h>
  27 #include <sound/jack.h>
  28 #include <sound/soc.h>
  29 #include <sound/hdaudio_ext.h>
  30 #include <sound/hda_i915.h>
  31 #include <sound/pcm_drm_eld.h>
  32 #include <sound/hda_chmap.h>
  33 #include "../../hda/local.h"
  34 #include "hdac_hdmi.h"
  35
  36 #define NAME_SIZE       32
  37
  38 #define AMP_OUT_MUTE            0xb080
  39 #define AMP_OUT_UNMUTE          0xb000
  40 #define PIN_OUT                 (AC_PINCTL_OUT_EN)
  41
  42 #define HDA_MAX_CONNECTIONS     32
  43
  44 #define HDA_MAX_CVTS            3
  45
  46 #define ELD_MAX_SIZE    256
  47 #define ELD_FIXED_BYTES 20
  48
  49 #define ELD_VER_CEA_861D 2
  50 #define ELD_VER_PARTIAL 31
  51 #define ELD_MAX_MNL     16
  52
  53 struct hdac_hdmi_cvt_params {
  54         unsigned int channels_min;
  55         unsigned int channels_max;
  56         u32 rates;
  57         u64 formats;
  58         unsigned int maxbps;
  59 };
  60
  61 struct hdac_hdmi_cvt {
  62         struct list_head head;
  63         hda_nid_t nid;
  64         const char *name;
  65         struct hdac_hdmi_cvt_params params;
  66 };
  67
  68 /* Currently only spk_alloc, more to be added */
  69 struct hdac_hdmi_parsed_eld {
  70         u8 spk_alloc;
  71 };
  72
  73 struct hdac_hdmi_eld {
  74         bool    monitor_present;
  75         bool    eld_valid;
  76         int     eld_size;
  77         char    eld_buffer[ELD_MAX_SIZE];
  78         struct  hdac_hdmi_parsed_eld info;
  79 };
  80
  81 struct hdac_hdmi_pin {
  82         struct list_head head;
  83         hda_nid_t nid;
  84         int num_mux_nids;
  85         hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
  86         struct hdac_hdmi_eld eld;
  87         struct hdac_ext_device *edev;
  88         struct mutex lock;
  89         bool chmap_set;
  90         unsigned char chmap[8]; /* ALSA API channel-map */
  91         int channels; /* current number of channels */
  92 };
  93
  94 struct hdac_hdmi_pcm {
  95         struct list_head head;
  96         int pcm_id;
  97         struct hdac_hdmi_pin *pin;
  98         struct hdac_hdmi_cvt *cvt;
  99         struct snd_jack *jack;
 100 };
 101
 102 struct hdac_hdmi_dai_pin_map {
 103         int dai_id;
 104         struct hdac_hdmi_pin *pin;
 105         struct hdac_hdmi_cvt *cvt;
 106 };
 107
 108 struct hdac_hdmi_priv {
 109         struct hdac_hdmi_dai_pin_map dai_map[HDA_MAX_CVTS];
 110         struct list_head pin_list;
 111         struct list_head cvt_list;
 112         struct list_head pcm_list;
 113         int num_pin;
 114         int num_cvt;
 115         struct mutex pin_mutex;
 116         struct hdac_chmap chmap;
 117 };
 118
 119 static void hdac_hdmi_enable_cvt(struct hdac_ext_device *edev,
 120                         struct hdac_hdmi_dai_pin_map *dai_map);
 121
 122 static int hdac_hdmi_enable_pin(struct hdac_ext_device *hdac,
 123                         struct hdac_hdmi_dai_pin_map *dai_map);
 124
 125 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
 126                                                 int pcm_idx)
 127 {
 128         struct hdac_hdmi_pcm *pcm;
 129
 130         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 131                 if (pcm->pcm_id == pcm_idx)
 132                         return pcm;
 133         }
 134
 135         return NULL;
 136 }
 137
 138 static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev)
 139 {
 140         struct hdac_device *hdac = dev_to_hdac_dev(dev);
 141
 142         return to_ehdac_device(hdac);
 143 }
 144
 145 static unsigned int sad_format(const u8 *sad)
 146 {
 147         return ((sad[0] >> 0x3) & 0x1f);
 148 }
 149
 150 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
 151 {
 152         return (sad[2] & 7);
 153 }
 154
 155 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
 156                                                 void *eld)
 157 {
 158         u64 formats = SNDRV_PCM_FMTBIT_S16;
 159         int i;
 160         const u8 *sad, *eld_buf = eld;
 161
 162         sad = drm_eld_sad(eld_buf);
 163         if (!sad)
 164                 goto format_constraint;
 165
 166         for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
 167                 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
 168
 169                         /*
 170                          * the controller support 20 and 24 bits in 32 bit
 171                          * container so we set S32
 172                          */
 173                         if (sad_sample_bits_lpcm(sad) & 0x6)
 174                                 formats |= SNDRV_PCM_FMTBIT_S32;
 175                 }
 176         }
 177
 178 format_constraint:
 179         return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
 180                                 formats);
 181
 182 }
 183
 184 static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac,
 185                                 hda_nid_t cvt_nid, hda_nid_t pin_nid,
 186                                 u32 stream_tag, int format)
 187 {
 188         unsigned int val;
 189
 190         dev_dbg(&hdac->hdac.dev, "cvt nid %d pnid %d stream %d format 0x%x\n",
 191                         cvt_nid, pin_nid, stream_tag, format);
 192
 193         val = (stream_tag << 4);
 194
 195         snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
 196                                 AC_VERB_SET_CHANNEL_STREAMID, val);
 197         snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
 198                                 AC_VERB_SET_STREAM_FORMAT, format);
 199
 200         return 0;
 201 }
 202
 203 static void
 204 hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
 205                                 int packet_index, int byte_index)
 206 {
 207         int val;
 208
 209         val = (packet_index << 5) | (byte_index & 0x1f);
 210
 211         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 212                                 AC_VERB_SET_HDMI_DIP_INDEX, val);
 213 }
 214
 215 struct dp_audio_infoframe {
 216         u8 type; /* 0x84 */
 217         u8 len;  /* 0x1b */
 218         u8 ver;  /* 0x11 << 2 */
 219
 220         u8 CC02_CT47;   /* match with HDMI infoframe from this on */
 221         u8 SS01_SF24;
 222         u8 CXT04;
 223         u8 CA;
 224         u8 LFEPBL01_LSV36_DM_INH7;
 225 };
 226
 227 static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac,
 228                                 hda_nid_t cvt_nid, hda_nid_t pin_nid)
 229 {
 230         uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
 231         struct hdmi_audio_infoframe frame;
 232         struct dp_audio_infoframe dp_ai;
 233         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 234         struct hdac_hdmi_pin *pin;
 235         u8 *dip;
 236         int ret;
 237         int i;
 238         const u8 *eld_buf;
 239         u8 conn_type;
 240         int channels, ca;
 241
 242         list_for_each_entry(pin, &hdmi->pin_list, head) {
 243                 if (pin->nid == pin_nid)
 244                         break;
 245         }
 246
 247         ca = snd_hdac_channel_allocation(&hdac->hdac, pin->eld.info.spk_alloc,
 248                         pin->channels, pin->chmap_set, true, pin->chmap);
 249
 250         channels = snd_hdac_get_active_channels(ca);
 251         hdmi->chmap.ops.set_channel_count(&hdac->hdac, cvt_nid, channels);
 252
 253         snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
 254                                 pin->channels, pin->chmap, pin->chmap_set);
 255
 256         eld_buf = pin->eld.eld_buffer;
 257         conn_type = drm_eld_get_conn_type(eld_buf);
 258
 259         switch (conn_type) {
 260         case DRM_ELD_CONN_TYPE_HDMI:
 261                 hdmi_audio_infoframe_init(&frame);
 262
 263                 frame.channels = channels;
 264                 frame.channel_allocation = ca;
 265
 266                 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
 267                 if (ret < 0)
 268                         return ret;
 269
 270                 break;
 271
 272         case DRM_ELD_CONN_TYPE_DP:
 273                 memset(&dp_ai, 0, sizeof(dp_ai));
 274                 dp_ai.type      = 0x84;
 275                 dp_ai.len       = 0x1b;
 276                 dp_ai.ver       = 0x11 << 2;
 277                 dp_ai.CC02_CT47 = channels - 1;
 278                 dp_ai.CA        = ca;
 279
 280                 dip = (u8 *)&dp_ai;
 281                 break;
 282
 283         default:
 284                 dev_err(&hdac->hdac.dev, "Invalid connection type: %d\n",
 285                                                 conn_type);
 286                 return -EIO;
 287         }
 288
 289         /* stop infoframe transmission */
 290         hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
 291         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 292                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
 293
 294
 295         /*  Fill infoframe. Index auto-incremented */
 296         hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
 297         if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
 298                 for (i = 0; i < sizeof(buffer); i++)
 299                         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 300                                 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
 301         } else {
 302                 for (i = 0; i < sizeof(dp_ai); i++)
 303                         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 304                                 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
 305         }
 306
 307         /* Start infoframe */
 308         hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
 309         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 310                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
 311
 312         return 0;
 313 }
 314
 315 static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
 316                 struct hdac_hdmi_dai_pin_map *dai_map, unsigned int pwr_state)
 317 {
 318         /* Power up pin widget */
 319         if (!snd_hdac_check_power_state(&edev->hdac, dai_map->pin->nid,
 320                                                 pwr_state))
 321                 snd_hdac_codec_write(&edev->hdac, dai_map->pin->nid, 0,
 322                         AC_VERB_SET_POWER_STATE, pwr_state);
 323
 324         /* Power up converter */
 325         if (!snd_hdac_check_power_state(&edev->hdac, dai_map->cvt->nid,
 326                                                 pwr_state))
 327                 snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
 328                         AC_VERB_SET_POWER_STATE, pwr_state);
 329 }
 330
 331 static int hdac_hdmi_playback_prepare(struct snd_pcm_substream *substream,
 332                                 struct snd_soc_dai *dai)
 333 {
 334         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 335         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 336         struct hdac_hdmi_dai_pin_map *dai_map;
 337         struct hdac_hdmi_pin *pin;
 338         struct hdac_ext_dma_params *dd;
 339         int ret;
 340
 341         dai_map = &hdmi->dai_map[dai->id];
 342         pin = dai_map->pin;
 343
 344         dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
 345         dev_dbg(&hdac->hdac.dev, "stream tag from cpu dai %d format in cvt 0x%x\n",
 346                         dd->stream_tag, dd->format);
 347
 348         hdac_hdmi_enable_cvt(hdac, dai_map);
 349         ret = hdac_hdmi_enable_pin(hdac, dai_map);
 350         if (ret < 0)
 351                 return ret;
 352         mutex_lock(&pin->lock);
 353         pin->channels = substream->runtime->channels;
 354
 355         ret = hdac_hdmi_setup_audio_infoframe(hdac, dai_map->cvt->nid,
 356                                                 dai_map->pin->nid);
 357         mutex_unlock(&pin->lock);
 358         if (ret < 0)
 359                 return ret;
 360
 361         return hdac_hdmi_setup_stream(hdac, dai_map->cvt->nid,
 362                         dai_map->pin->nid, dd->stream_tag, dd->format);
 363 }
 364
 365 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
 366         struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
 367 {
 368         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 369         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 370         struct hdac_hdmi_dai_pin_map *dai_map;
 371         struct hdac_hdmi_pin *pin;
 372         struct hdac_ext_dma_params *dd;
 373
 374         dai_map = &hdmi->dai_map[dai->id];
 375         pin = dai_map->pin;
 376
 377         if (!pin)
 378                 return -ENODEV;
 379
 380         if ((!pin->eld.monitor_present) || (!pin->eld.eld_valid)) {
 381                 dev_err(&hdac->hdac.dev, "device is not configured for this pin: %d\n",
 382                                                                 pin->nid);
 383                 return -ENODEV;
 384         }
 385
 386         dd = snd_soc_dai_get_dma_data(dai, substream);
 387         if (!dd) {
 388                 dd = kzalloc(sizeof(*dd), GFP_KERNEL);
 389                 if (!dd)
 390                         return -ENOMEM;
 391         }
 392
 393         dd->format = snd_hdac_calc_stream_format(params_rate(hparams),
 394                         params_channels(hparams), params_format(hparams),
 395                         24, 0);
 396
 397         snd_soc_dai_set_dma_data(dai, substream, (void *)dd);
 398
 399         return 0;
 400 }
 401
 402 static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream,
 403                 struct snd_soc_dai *dai)
 404 {
 405         struct hdac_ext_dma_params *dd;
 406
 407         dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
 408
 409         if (dd) {
 410                 snd_soc_dai_set_dma_data(dai, substream, NULL);
 411                 kfree(dd);
 412         }
 413
 414         return 0;
 415 }
 416
 417 static void hdac_hdmi_enable_cvt(struct hdac_ext_device *edev,
 418                 struct hdac_hdmi_dai_pin_map *dai_map)
 419 {
 420         /* Enable transmission */
 421         snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
 422                         AC_VERB_SET_DIGI_CONVERT_1, 1);
 423
 424         /* Category Code (CC) to zero */
 425         snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
 426                         AC_VERB_SET_DIGI_CONVERT_2, 0);
 427 }
 428
 429 static int hdac_hdmi_enable_pin(struct hdac_ext_device *hdac,
 430                 struct hdac_hdmi_dai_pin_map *dai_map)
 431 {
 432         int mux_idx;
 433         struct hdac_hdmi_pin *pin = dai_map->pin;
 434
 435         for (mux_idx = 0; mux_idx < pin->num_mux_nids; mux_idx++) {
 436                 if (pin->mux_nids[mux_idx] == dai_map->cvt->nid) {
 437                         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 438                                         AC_VERB_SET_CONNECT_SEL, mux_idx);
 439                         break;
 440                 }
 441         }
 442
 443         if (mux_idx == pin->num_mux_nids)
 444                 return -EIO;
 445
 446         /* Enable out path for this pin widget */
 447         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 448                         AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
 449
 450         hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D0);
 451
 452         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 453                         AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
 454
 455         return 0;
 456 }
 457
 458 static int hdac_hdmi_query_pin_connlist(struct hdac_ext_device *hdac,
 459                                         struct hdac_hdmi_pin *pin)
 460 {
 461         if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
 462                 dev_warn(&hdac->hdac.dev,
 463                         "HDMI: pin %d wcaps %#x does not support connection list\n",
 464                         pin->nid, get_wcaps(&hdac->hdac, pin->nid));
 465                 return -EINVAL;
 466         }
 467
 468         pin->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
 469                         pin->mux_nids, HDA_MAX_CONNECTIONS);
 470         if (pin->num_mux_nids == 0)
 471                 dev_warn(&hdac->hdac.dev, "No connections found for pin: %d\n",
 472                                                                 pin->nid);
 473
 474         dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin: %d\n",
 475                         pin->num_mux_nids, pin->nid);
 476
 477         return pin->num_mux_nids;
 478 }
 479
 480 /*
 481  * Query pcm list and return pin widget to which stream is routed.
 482  *
 483  * Also query connection list of the pin, to validate the cvt to pin map.
 484  *
 485  * Same stream rendering to multiple pins simultaneously can be done
 486  * possibly, but not supported for now in driver. So return the first pin
 487  * connected.
 488  */
 489 static struct hdac_hdmi_pin *hdac_hdmi_get_pin_from_cvt(
 490                         struct hdac_ext_device *edev,
 491                         struct hdac_hdmi_priv *hdmi,
 492                         struct hdac_hdmi_cvt *cvt)
 493 {
 494         struct hdac_hdmi_pcm *pcm;
 495         struct hdac_hdmi_pin *pin = NULL;
 496         int ret, i;
 497
 498         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 499                 if (pcm->cvt == cvt) {
 500                         pin = pcm->pin;
 501                         break;
 502                 }
 503         }
 504
 505         if (pin) {
 506                 ret = hdac_hdmi_query_pin_connlist(edev, pin);
 507                 if (ret < 0)
 508                         return NULL;
 509
 510                 for (i = 0; i < pin->num_mux_nids; i++) {
 511                         if (pin->mux_nids[i] == cvt->nid)
 512                                 return pin;
 513                 }
 514         }
 515
 516         return NULL;
 517 }
 518
 519 /*
 520  * This tries to get a valid pin and set the HW constraints based on the
 521  * ELD. Even if a valid pin is not found return success so that device open
 522  * doesn't fail.
 523  */
 524 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
 525                         struct snd_soc_dai *dai)
 526 {
 527         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 528         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 529         struct hdac_hdmi_dai_pin_map *dai_map;
 530         struct hdac_hdmi_cvt *cvt;
 531         struct hdac_hdmi_pin *pin;
 532         int ret;
 533
 534         dai_map = &hdmi->dai_map[dai->id];
 535
 536         cvt = dai_map->cvt;
 537         pin = hdac_hdmi_get_pin_from_cvt(hdac, hdmi, cvt);
 538
 539         /*
 540          * To make PA and other userland happy.
 541          * userland scans devices so returning error does not help.
 542          */
 543         if (!pin)
 544                 return 0;
 545
 546         if ((!pin->eld.monitor_present) ||
 547                         (!pin->eld.eld_valid)) {
 548
 549                 dev_warn(&hdac->hdac.dev,
 550                         "Failed: monitor present? %d ELD valid?: %d for pin: %d\n",
 551                         pin->eld.monitor_present, pin->eld.eld_valid, pin->nid);
 552
 553                 return 0;
 554         }
 555
 556         dai_map->pin = pin;
 557
 558         ret = hdac_hdmi_eld_limit_formats(substream->runtime,
 559                                 pin->eld.eld_buffer);
 560         if (ret < 0)
 561                 return ret;
 562
 563         return snd_pcm_hw_constraint_eld(substream->runtime,
 564                                 pin->eld.eld_buffer);
 565 }
 566
 567 static int hdac_hdmi_trigger(struct snd_pcm_substream *substream, int cmd,
 568                 struct snd_soc_dai *dai)
 569 {
 570
 571         switch (cmd) {
 572         case SNDRV_PCM_TRIGGER_RESUME:
 573         case SNDRV_PCM_TRIGGER_START:
 574         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 575                 return hdac_hdmi_playback_prepare(substream, dai);
 576
 577         default:
 578                 return 0;
 579         }
 580
 581         return 0;
 582 }
 583
 584 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
 585                 struct snd_soc_dai *dai)
 586 {
 587         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 588         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 589         struct hdac_hdmi_dai_pin_map *dai_map;
 590
 591         dai_map = &hdmi->dai_map[dai->id];
 592
 593         if (dai_map->pin) {
 594                 snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
 595                                 AC_VERB_SET_CHANNEL_STREAMID, 0);
 596                 snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
 597                                 AC_VERB_SET_STREAM_FORMAT, 0);
 598
 599                 hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D3);
 600
 601                 snd_hdac_codec_write(&hdac->hdac, dai_map->pin->nid, 0,
 602                         AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
 603
 604                 mutex_lock(&dai_map->pin->lock);
 605                 dai_map->pin->chmap_set = false;
 606                 memset(dai_map->pin->chmap, 0, sizeof(dai_map->pin->chmap));
 607                 dai_map->pin->channels = 0;
 608                 mutex_unlock(&dai_map->pin->lock);
 609
 610                 dai_map->pin = NULL;
 611         }
 612 }
 613
 614 static int
 615 hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt)
 616 {
 617         unsigned int chans;
 618         struct hdac_ext_device *edev = to_ehdac_device(hdac);
 619         struct hdac_hdmi_priv *hdmi = edev->private_data;
 620         int err;
 621
 622         chans = get_wcaps(hdac, cvt->nid);
 623         chans = get_wcaps_channels(chans);
 624
 625         cvt->params.channels_min = 2;
 626
 627         cvt->params.channels_max = chans;
 628         if (chans > hdmi->chmap.channels_max)
 629                 hdmi->chmap.channels_max = chans;
 630
 631         err = snd_hdac_query_supported_pcm(hdac, cvt->nid,
 632                         &cvt->params.rates,
 633                         &cvt->params.formats,
 634                         &cvt->params.maxbps);
 635         if (err < 0)
 636                 dev_err(&hdac->dev,
 637                         "Failed to query pcm params for nid %d: %d\n",
 638                         cvt->nid, err);
 639
 640         return err;
 641 }
 642
 643 static int hdac_hdmi_fill_widget_info(struct device *dev,
 644                                 struct snd_soc_dapm_widget *w,
 645                                 enum snd_soc_dapm_type id, void *priv,
 646                                 const char *wname, const char *stream,
 647                                 struct snd_kcontrol_new *wc, int numkc)
 648 {
 649         w->id = id;
 650         w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
 651         if (!w->name)
 652                 return -ENOMEM;
 653
 654         w->sname = stream;
 655         w->reg = SND_SOC_NOPM;
 656         w->shift = 0;
 657         w->kcontrol_news = wc;
 658         w->num_kcontrols = numkc;
 659         w->priv = priv;
 660
 661         return 0;
 662 }
 663
 664 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
 665                 const char *sink, const char *control, const char *src,
 666                 int (*handler)(struct snd_soc_dapm_widget *src,
 667                         struct snd_soc_dapm_widget *sink))
 668 {
 669         route->sink = sink;
 670         route->source = src;
 671         route->control = control;
 672         route->connected = handler;
 673 }
 674
 675 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_ext_device *edev,
 676                                         struct hdac_hdmi_pin *pin)
 677 {
 678         struct hdac_hdmi_priv *hdmi = edev->private_data;
 679         struct hdac_hdmi_pcm *pcm = NULL;
 680
 681         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 682                 if (pcm->pin == pin)
 683                         return pcm;
 684         }
 685
 686         return NULL;
 687 }
 688
 689 /*
 690  * Based on user selection, map the PINs with the PCMs.
 691  */
 692 static int hdac_hdmi_set_pin_mux(struct snd_kcontrol *kcontrol,
 693                 struct snd_ctl_elem_value *ucontrol)
 694 {
 695         int ret;
 696         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 697         struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
 698         struct snd_soc_dapm_context *dapm = w->dapm;
 699         struct hdac_hdmi_pin *pin = w->priv;
 700         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
 701         struct hdac_hdmi_priv *hdmi = edev->private_data;
 702         struct hdac_hdmi_pcm *pcm = NULL;
 703         const char *cvt_name =  e->texts[ucontrol->value.enumerated.item[0]];
 704
 705         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
 706         if (ret < 0)
 707                 return ret;
 708
 709         mutex_lock(&hdmi->pin_mutex);
 710         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 711                 if (pcm->pin == pin)
 712                         pcm->pin = NULL;
 713
 714                 /*
 715                  * Jack status is not reported during device probe as the
 716                  * PCMs are not registered by then. So report it here.
 717                  */
 718                 if (!strcmp(cvt_name, pcm->cvt->name) && !pcm->pin) {
 719                         pcm->pin = pin;
 720                         if (pin->eld.monitor_present && pin->eld.eld_valid) {
 721                                 dev_dbg(&edev->hdac.dev,
 722                                         "jack report for pcm=%d\n",
 723                                         pcm->pcm_id);
 724
 725                                 snd_jack_report(pcm->jack, SND_JACK_AVOUT);
 726                         }
 727                         mutex_unlock(&hdmi->pin_mutex);
 728                         return ret;
 729                 }
 730         }
 731         mutex_unlock(&hdmi->pin_mutex);
 732
 733         return ret;
 734 }
 735
 736 /*
 737  * Ideally the Mux inputs should be based on the num_muxs enumerated, but
 738  * the display driver seem to be programming the connection list for the pin
 739  * widget runtime.
 740  *
 741  * So programming all the possible inputs for the mux, the user has to take
 742  * care of selecting the right one and leaving all other inputs selected to
 743  * "NONE"
 744  */
 745 static int hdac_hdmi_create_pin_muxs(struct hdac_ext_device *edev,
 746                                 struct hdac_hdmi_pin *pin,
 747                                 struct snd_soc_dapm_widget *widget,
 748                                 const char *widget_name)
 749 {
 750         struct hdac_hdmi_priv *hdmi = edev->private_data;
 751         struct snd_kcontrol_new *kc;
 752         struct hdac_hdmi_cvt *cvt;
 753         struct soc_enum *se;
 754         char kc_name[NAME_SIZE];
 755         char mux_items[NAME_SIZE];
 756         /* To hold inputs to the Pin mux */
 757         char *items[HDA_MAX_CONNECTIONS];
 758         int i = 0;
 759         int num_items = hdmi->num_cvt + 1;
 760
 761         kc = devm_kzalloc(&edev->hdac.dev, sizeof(*kc), GFP_KERNEL);
 762         if (!kc)
 763                 return -ENOMEM;
 764
 765         se = devm_kzalloc(&edev->hdac.dev, sizeof(*se), GFP_KERNEL);
 766         if (!se)
 767                 return -ENOMEM;
 768
 769         sprintf(kc_name, "Pin %d Input", pin->nid);
 770         kc->name = devm_kstrdup(&edev->hdac.dev, kc_name, GFP_KERNEL);
 771         if (!kc->name)
 772                 return -ENOMEM;
 773
 774         kc->private_value = (long)se;
 775         kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 776         kc->access = 0;
 777         kc->info = snd_soc_info_enum_double;
 778         kc->put = hdac_hdmi_set_pin_mux;
 779         kc->get = snd_soc_dapm_get_enum_double;
 780
 781         se->reg = SND_SOC_NOPM;
 782
 783         /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
 784         se->items = num_items;
 785         se->mask = roundup_pow_of_two(se->items) - 1;
 786
 787         sprintf(mux_items, "NONE");
 788         items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
 789         if (!items[i])
 790                 return -ENOMEM;
 791
 792         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 793                 i++;
 794                 sprintf(mux_items, "cvt %d", cvt->nid);
 795                 items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
 796                 if (!items[i])
 797                         return -ENOMEM;
 798         }
 799
 800         se->texts = devm_kmemdup(&edev->hdac.dev, items,
 801                         (num_items  * sizeof(char *)), GFP_KERNEL);
 802         if (!se->texts)
 803                 return -ENOMEM;
 804
 805         return hdac_hdmi_fill_widget_info(&edev->hdac.dev, widget,
 806                         snd_soc_dapm_mux, pin, widget_name, NULL, kc, 1);
 807 }
 808
 809 /* Add cvt <- input <- mux route map */
 810 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_ext_device *edev,
 811                         struct snd_soc_dapm_widget *widgets,
 812                         struct snd_soc_dapm_route *route, int rindex)
 813 {
 814         struct hdac_hdmi_priv *hdmi = edev->private_data;
 815         const struct snd_kcontrol_new *kc;
 816         struct soc_enum *se;
 817         int mux_index = hdmi->num_cvt + hdmi->num_pin;
 818         int i, j;
 819
 820         for (i = 0; i < hdmi->num_pin; i++) {
 821                 kc = widgets[mux_index].kcontrol_news;
 822                 se = (struct soc_enum *)kc->private_value;
 823                 for (j = 0; j < hdmi->num_cvt; j++) {
 824                         hdac_hdmi_fill_route(&route[rindex],
 825                                         widgets[mux_index].name,
 826                                         se->texts[j + 1],
 827                                         widgets[j].name, NULL);
 828
 829                         rindex++;
 830                 }
 831
 832                 mux_index++;
 833         }
 834 }
 835
 836 /*
 837  * Widgets are added in the below sequence
 838  *      Converter widgets for num converters enumerated
 839  *      Pin widgets for num pins enumerated
 840  *      Pin mux widgets to represent connenction list of pin widget
 841  *
 842  * Total widgets elements = num_cvt + num_pin + num_pin;
 843  *
 844  * Routes are added as below:
 845  *      pin mux -> pin (based on num_pins)
 846  *      cvt -> "Input sel control" -> pin_mux
 847  *
 848  * Total route elements:
 849  *      num_pins + (pin_muxes * num_cvt)
 850  */
 851 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
 852 {
 853         struct snd_soc_dapm_widget *widgets;
 854         struct snd_soc_dapm_route *route;
 855         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
 856         struct hdac_hdmi_priv *hdmi = edev->private_data;
 857         struct snd_soc_dai_driver *dai_drv = dapm->component->dai_drv;
 858         char widget_name[NAME_SIZE];
 859         struct hdac_hdmi_cvt *cvt;
 860         struct hdac_hdmi_pin *pin;
 861         int ret, i = 0, num_routes = 0;
 862
 863         if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
 864                 return -EINVAL;
 865
 866         widgets = devm_kzalloc(dapm->dev,
 867                 (sizeof(*widgets) * ((2 * hdmi->num_pin) + hdmi->num_cvt)),
 868                 GFP_KERNEL);
 869
 870         if (!widgets)
 871                 return -ENOMEM;
 872
 873         /* DAPM widgets to represent each converter widget */
 874         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 875                 sprintf(widget_name, "Converter %d", cvt->nid);
 876                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
 877                         snd_soc_dapm_aif_in, &cvt->nid,
 878                         widget_name, dai_drv[i].playback.stream_name, NULL, 0);
 879                 if (ret < 0)
 880                         return ret;
 881                 i++;
 882         }
 883
 884         list_for_each_entry(pin, &hdmi->pin_list, head) {
 885                 sprintf(widget_name, "hif%d Output", pin->nid);
 886                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
 887                                 snd_soc_dapm_output, &pin->nid,
 888                                 widget_name, NULL, NULL, 0);
 889                 if (ret < 0)
 890                         return ret;
 891                 i++;
 892         }
 893
 894         /* DAPM widgets to represent the connection list to pin widget */
 895         list_for_each_entry(pin, &hdmi->pin_list, head) {
 896                 sprintf(widget_name, "Pin %d Mux", pin->nid);
 897                 ret = hdac_hdmi_create_pin_muxs(edev, pin, &widgets[i],
 898                                                         widget_name);
 899                 if (ret < 0)
 900                         return ret;
 901                 i++;
 902
 903                 /* For cvt to pin_mux mapping */
 904                 num_routes += hdmi->num_cvt;
 905
 906                 /* For pin_mux to pin mapping */
 907                 num_routes++;
 908         }
 909
 910         route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
 911                                                         GFP_KERNEL);
 912         if (!route)
 913                 return -ENOMEM;
 914
 915         i = 0;
 916         /* Add pin <- NULL <- mux route map */
 917         list_for_each_entry(pin, &hdmi->pin_list, head) {
 918                 int sink_index = i + hdmi->num_cvt;
 919                 int src_index = sink_index + hdmi->num_pin;
 920
 921                 hdac_hdmi_fill_route(&route[i],
 922                                 widgets[sink_index].name, NULL,
 923                                 widgets[src_index].name, NULL);
 924                 i++;
 925
 926         }
 927
 928         hdac_hdmi_add_pinmux_cvt_route(edev, widgets, route, i);
 929
 930         snd_soc_dapm_new_controls(dapm, widgets,
 931                 ((2 * hdmi->num_pin) + hdmi->num_cvt));
 932
 933         snd_soc_dapm_add_routes(dapm, route, num_routes);
 934         snd_soc_dapm_new_widgets(dapm->card);
 935
 936         return 0;
 937
 938 }
 939
 940 static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev)
 941 {
 942         struct hdac_hdmi_priv *hdmi = edev->private_data;
 943         struct hdac_hdmi_dai_pin_map *dai_map;
 944         struct hdac_hdmi_cvt *cvt;
 945         int dai_id = 0;
 946
 947         if (list_empty(&hdmi->cvt_list))
 948                 return -EINVAL;
 949
 950         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 951                 dai_map = &hdmi->dai_map[dai_id];
 952                 dai_map->dai_id = dai_id;
 953                 dai_map->cvt = cvt;
 954
 955                 dai_id++;
 956
 957                 if (dai_id == HDA_MAX_CVTS) {
 958                         dev_warn(&edev->hdac.dev,
 959                                 "Max dais supported: %d\n", dai_id);
 960                         break;
 961                 }
 962         }
 963
 964         return 0;
 965 }
 966
 967 static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
 968 {
 969         struct hdac_hdmi_priv *hdmi = edev->private_data;
 970         struct hdac_hdmi_cvt *cvt;
 971         char name[NAME_SIZE];
 972
 973         cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
 974         if (!cvt)
 975                 return -ENOMEM;
 976
 977         cvt->nid = nid;
 978         sprintf(name, "cvt %d", cvt->nid);
 979         cvt->name = kstrdup(name, GFP_KERNEL);
 980
 981         list_add_tail(&cvt->head, &hdmi->cvt_list);
 982         hdmi->num_cvt++;
 983
 984         return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
 985 }
 986
 987 static int  hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
 988                         struct hdac_hdmi_pin *pin)
 989 {
 990         unsigned int ver, mnl;
 991
 992         ver = (pin->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
 993                                                 >> DRM_ELD_VER_SHIFT;
 994
 995         if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
 996                 dev_err(&edev->hdac.dev, "HDMI: Unknown ELD version %d\n", ver);
 997                 return -EINVAL;
 998         }
 999
1000         mnl = (pin->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
1001                 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
1002
1003         if (mnl > ELD_MAX_MNL) {
1004                 dev_err(&edev->hdac.dev, "HDMI: MNL Invalid %d\n", mnl);
1005                 return -EINVAL;
1006         }
1007
1008         pin->eld.info.spk_alloc = pin->eld.eld_buffer[DRM_ELD_SPEAKER];
1009
1010         return 0;
1011 }
1012
1013 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin)
1014 {
1015         struct hdac_ext_device *edev = pin->edev;
1016         struct hdac_hdmi_priv *hdmi = edev->private_data;
1017         struct hdac_hdmi_pcm *pcm;
1018         int size;
1019
1020         mutex_lock(&hdmi->pin_mutex);
1021         pin->eld.monitor_present = false;
1022
1023         size = snd_hdac_acomp_get_eld(&edev->hdac, pin->nid, -1,
1024                                 &pin->eld.monitor_present, pin->eld.eld_buffer,
1025                                 ELD_MAX_SIZE);
1026
1027         if (size > 0) {
1028                 size = min(size, ELD_MAX_SIZE);
1029                 if (hdac_hdmi_parse_eld(edev, pin) < 0)
1030                         size = -EINVAL;
1031         }
1032
1033         if (size > 0) {
1034                 pin->eld.eld_valid = true;
1035                 pin->eld.eld_size = size;
1036         } else {
1037                 pin->eld.eld_valid = false;
1038                 pin->eld.eld_size = 0;
1039         }
1040
1041         pcm = hdac_hdmi_get_pcm(edev, pin);
1042
1043         if (!pin->eld.monitor_present || !pin->eld.eld_valid) {
1044
1045                 dev_dbg(&edev->hdac.dev, "%s: disconnect for pin %d\n",
1046                                                 __func__, pin->nid);
1047
1048                 /*
1049                  * PCMs are not registered during device probe, so don't
1050                  * report jack here. It will be done in usermode mux
1051                  * control select.
1052                  */
1053                 if (pcm) {
1054                         dev_dbg(&edev->hdac.dev,
1055                                 "jack report for pcm=%d\n", pcm->pcm_id);
1056
1057                         snd_jack_report(pcm->jack, 0);
1058                 }
1059
1060                 mutex_unlock(&hdmi->pin_mutex);
1061                 return;
1062         }
1063
1064         if (pin->eld.monitor_present && pin->eld.eld_valid) {
1065                 if (pcm) {
1066                         dev_dbg(&edev->hdac.dev,
1067                                 "jack report for pcm=%d\n",
1068                                 pcm->pcm_id);
1069
1070                         snd_jack_report(pcm->jack, SND_JACK_AVOUT);
1071                 }
1072
1073                 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
1074                           pin->eld.eld_buffer, pin->eld.eld_size, false);
1075         }
1076
1077         mutex_unlock(&hdmi->pin_mutex);
1078 }
1079
1080 static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
1081 {
1082         struct hdac_hdmi_priv *hdmi = edev->private_data;
1083         struct hdac_hdmi_pin *pin;
1084
1085         pin = kzalloc(sizeof(*pin), GFP_KERNEL);
1086         if (!pin)
1087                 return -ENOMEM;
1088
1089         pin->nid = nid;
1090
1091         list_add_tail(&pin->head, &hdmi->pin_list);
1092         hdmi->num_pin++;
1093
1094         pin->edev = edev;
1095         mutex_init(&pin->lock);
1096
1097         return 0;
1098 }
1099
1100 #define INTEL_VENDOR_NID 0x08
1101 #define INTEL_GET_VENDOR_VERB 0xf81
1102 #define INTEL_SET_VENDOR_VERB 0x781
1103 #define INTEL_EN_DP12                   0x02 /* enable DP 1.2 features */
1104 #define INTEL_EN_ALL_PIN_CVTS   0x01 /* enable 2nd & 3rd pins and convertors */
1105
1106 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac)
1107 {
1108         unsigned int vendor_param;
1109
1110         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1111                                 INTEL_GET_VENDOR_VERB, 0);
1112         if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1113                 return;
1114
1115         vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1116         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1117                                 INTEL_SET_VENDOR_VERB, vendor_param);
1118         if (vendor_param == -1)
1119                 return;
1120 }
1121
1122 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
1123 {
1124         unsigned int vendor_param;
1125
1126         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1127                                 INTEL_GET_VENDOR_VERB, 0);
1128         if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1129                 return;
1130
1131         /* enable DP1.2 mode */
1132         vendor_param |= INTEL_EN_DP12;
1133         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1134                                 INTEL_SET_VENDOR_VERB, vendor_param);
1135         if (vendor_param == -1)
1136                 return;
1137
1138 }
1139
1140 static struct snd_soc_dai_ops hdmi_dai_ops = {
1141         .startup = hdac_hdmi_pcm_open,
1142         .shutdown = hdac_hdmi_pcm_close,
1143         .hw_params = hdac_hdmi_set_hw_params,
1144         .prepare = hdac_hdmi_playback_prepare,
1145         .trigger = hdac_hdmi_trigger,
1146         .hw_free = hdac_hdmi_playback_cleanup,
1147 };
1148
1149 /*
1150  * Each converter can support a stream independently. So a dai is created
1151  * based on the number of converter queried.
1152  */
1153 static int hdac_hdmi_create_dais(struct hdac_device *hdac,
1154                 struct snd_soc_dai_driver **dais,
1155                 struct hdac_hdmi_priv *hdmi, int num_dais)
1156 {
1157         struct snd_soc_dai_driver *hdmi_dais;
1158         struct hdac_hdmi_cvt *cvt;
1159         char name[NAME_SIZE], dai_name[NAME_SIZE];
1160         int i = 0;
1161         u32 rates, bps;
1162         unsigned int rate_max = 384000, rate_min = 8000;
1163         u64 formats;
1164         int ret;
1165
1166         hdmi_dais = devm_kzalloc(&hdac->dev,
1167                         (sizeof(*hdmi_dais) * num_dais),
1168                         GFP_KERNEL);
1169         if (!hdmi_dais)
1170                 return -ENOMEM;
1171
1172         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1173                 ret = snd_hdac_query_supported_pcm(hdac, cvt->nid,
1174                                         &rates, &formats, &bps);
1175                 if (ret)
1176                         return ret;
1177
1178                 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1179                 hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
1180                                         dai_name, GFP_KERNEL);
1181
1182                 if (!hdmi_dais[i].name)
1183                         return -ENOMEM;
1184
1185                 snprintf(name, sizeof(name), "hifi%d", i+1);
1186                 hdmi_dais[i].playback.stream_name =
1187                                 devm_kstrdup(&hdac->dev, name, GFP_KERNEL);
1188                 if (!hdmi_dais[i].playback.stream_name)
1189                         return -ENOMEM;
1190
1191                 /*
1192                  * Set caps based on capability queried from the converter.
1193                  * It will be constrained runtime based on ELD queried.
1194                  */
1195                 hdmi_dais[i].playback.formats = formats;
1196                 hdmi_dais[i].playback.rates = rates;
1197                 hdmi_dais[i].playback.rate_max = rate_max;
1198                 hdmi_dais[i].playback.rate_min = rate_min;
1199                 hdmi_dais[i].playback.channels_min = 2;
1200                 hdmi_dais[i].playback.channels_max = 2;
1201                 hdmi_dais[i].ops = &hdmi_dai_ops;
1202
1203                 i++;
1204         }
1205
1206         *dais = hdmi_dais;
1207
1208         return 0;
1209 }
1210
1211 /*
1212  * Parse all nodes and store the cvt/pin nids in array
1213  * Add one time initialization for pin and cvt widgets
1214  */
1215 static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
1216                 struct snd_soc_dai_driver **dais, int *num_dais)
1217 {
1218         hda_nid_t nid;
1219         int i, num_nodes;
1220         struct hdac_device *hdac = &edev->hdac;
1221         struct hdac_hdmi_priv *hdmi = edev->private_data;
1222         int ret;
1223
1224         hdac_hdmi_skl_enable_all_pins(hdac);
1225         hdac_hdmi_skl_enable_dp12(hdac);
1226
1227         num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid);
1228         if (!nid || num_nodes <= 0) {
1229                 dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");
1230                 return -EINVAL;
1231         }
1232
1233         hdac->num_nodes = num_nodes;
1234         hdac->start_nid = nid;
1235
1236         for (i = 0; i < hdac->num_nodes; i++, nid++) {
1237                 unsigned int caps;
1238                 unsigned int type;
1239
1240                 caps = get_wcaps(hdac, nid);
1241                 type = get_wcaps_type(caps);
1242
1243                 if (!(caps & AC_WCAP_DIGITAL))
1244                         continue;
1245
1246                 switch (type) {
1247
1248                 case AC_WID_AUD_OUT:
1249                         ret = hdac_hdmi_add_cvt(edev, nid);
1250                         if (ret < 0)
1251                                 return ret;
1252                         break;
1253
1254                 case AC_WID_PIN:
1255                         ret = hdac_hdmi_add_pin(edev, nid);
1256                         if (ret < 0)
1257                                 return ret;
1258                         break;
1259                 }
1260         }
1261
1262         hdac->end_nid = nid;
1263
1264         if (!hdmi->num_pin || !hdmi->num_cvt)
1265                 return -EIO;
1266
1267         ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
1268         if (ret) {
1269                 dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
1270                                                         ret);
1271                 return ret;
1272         }
1273
1274         *num_dais = hdmi->num_cvt;
1275
1276         return hdac_hdmi_init_dai_map(edev);
1277 }
1278
1279 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
1280 {
1281         struct hdac_ext_device *edev = aptr;
1282         struct hdac_hdmi_priv *hdmi = edev->private_data;
1283         struct hdac_hdmi_pin *pin;
1284         struct snd_soc_codec *codec = edev->scodec;
1285
1286         /* Don't know how this mapping is derived */
1287         hda_nid_t pin_nid = port + 0x04;
1288
1289         dev_dbg(&edev->hdac.dev, "%s: for pin: %d\n", __func__, pin_nid);
1290
1291         /*
1292          * skip notification during system suspend (but not in runtime PM);
1293          * the state will be updated at resume. Also since the ELD and
1294          * connection states are updated in anyway at the end of the resume,
1295          * we can skip it when received during PM process.
1296          */
1297         if (snd_power_get_state(codec->component.card->snd_card) !=
1298                         SNDRV_CTL_POWER_D0)
1299                 return;
1300
1301         if (atomic_read(&edev->hdac.in_pm))
1302                 return;
1303
1304         list_for_each_entry(pin, &hdmi->pin_list, head) {
1305                 if (pin->nid == pin_nid)
1306                         hdac_hdmi_present_sense(pin);
1307         }
1308 }
1309
1310 static struct i915_audio_component_audio_ops aops = {
1311         .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1312 };
1313
1314 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1315                                                 int device)
1316 {
1317         struct snd_soc_pcm_runtime *rtd;
1318
1319         list_for_each_entry(rtd, &card->rtd_list, list) {
1320                 if (rtd->pcm && (rtd->pcm->device == device))
1321                         return rtd->pcm;
1322         }
1323
1324         return NULL;
1325 }
1326
1327 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device)
1328 {
1329         char jack_name[NAME_SIZE];
1330         struct snd_soc_codec *codec = dai->codec;
1331         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1332         struct snd_soc_dapm_context *dapm =
1333                 snd_soc_component_get_dapm(&codec->component);
1334         struct hdac_hdmi_priv *hdmi = edev->private_data;
1335         struct hdac_hdmi_pcm *pcm;
1336         struct snd_pcm *snd_pcm;
1337         int err;
1338
1339         /*
1340          * this is a new PCM device, create new pcm and
1341          * add to the pcm list
1342          */
1343         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
1344         if (!pcm)
1345                 return -ENOMEM;
1346         pcm->pcm_id = device;
1347         pcm->cvt = hdmi->dai_map[dai->id].cvt;
1348
1349         snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1350         if (snd_pcm) {
1351                 err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1352                 if (err < 0) {
1353                         dev_err(&edev->hdac.dev,
1354                                 "chmap control add failed with err: %d for pcm: %d\n",
1355                                 err, device);
1356                         kfree(pcm);
1357                         return err;
1358                 }
1359         }
1360
1361         list_add_tail(&pcm->head, &hdmi->pcm_list);
1362
1363         sprintf(jack_name, "HDMI/DP, pcm=%d Jack", device);
1364
1365         return snd_jack_new(dapm->card->snd_card, jack_name,
1366                 SND_JACK_AVOUT, &pcm->jack, true, false);
1367 }
1368 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1369
1370 static int hdmi_codec_probe(struct snd_soc_codec *codec)
1371 {
1372         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1373         struct hdac_hdmi_priv *hdmi = edev->private_data;
1374         struct snd_soc_dapm_context *dapm =
1375                 snd_soc_component_get_dapm(&codec->component);
1376         struct hdac_hdmi_pin *pin;
1377         struct hdac_ext_link *hlink = NULL;
1378         int ret;
1379
1380         edev->scodec = codec;
1381
1382         /*
1383          * hold the ref while we probe, also no need to drop the ref on
1384          * exit, we call pm_runtime_suspend() so that will do for us
1385          */
1386         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1387         if (!hlink) {
1388                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1389                 return -EIO;
1390         }
1391
1392         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1393
1394         ret = create_fill_widget_route_map(dapm);
1395         if (ret < 0)
1396                 return ret;
1397
1398         aops.audio_ptr = edev;
1399         ret = snd_hdac_i915_register_notifier(&aops);
1400         if (ret < 0) {
1401                 dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n",
1402                                 ret);
1403                 return ret;
1404         }
1405
1406         list_for_each_entry(pin, &hdmi->pin_list, head)
1407                 hdac_hdmi_present_sense(pin);
1408
1409         /* Imp: Store the card pointer in hda_codec */
1410         edev->card = dapm->card->snd_card;
1411
1412         /*
1413          * hdac_device core already sets the state to active and calls
1414          * get_noresume. So enable runtime and set the device to suspend.
1415          */
1416         pm_runtime_enable(&edev->hdac.dev);
1417         pm_runtime_put(&edev->hdac.dev);
1418         pm_runtime_suspend(&edev->hdac.dev);
1419
1420         return 0;
1421 }
1422
1423 static int hdmi_codec_remove(struct snd_soc_codec *codec)
1424 {
1425         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1426
1427         pm_runtime_disable(&edev->hdac.dev);
1428         return 0;
1429 }
1430
1431 #ifdef CONFIG_PM
1432 static int hdmi_codec_prepare(struct device *dev)
1433 {
1434         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1435         struct hdac_device *hdac = &edev->hdac;
1436
1437         pm_runtime_get_sync(&edev->hdac.dev);
1438
1439         /*
1440          * Power down afg.
1441          * codec_read is preferred over codec_write to set the power state.
1442          * This way verb is send to set the power state and response
1443          * is received. So setting power state is ensured without using loop
1444          * to read the state.
1445          */
1446         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1447                                                         AC_PWRST_D3);
1448
1449         return 0;
1450 }
1451
1452 static void hdmi_codec_complete(struct device *dev)
1453 {
1454         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1455         struct hdac_hdmi_priv *hdmi = edev->private_data;
1456         struct hdac_hdmi_pin *pin;
1457         struct hdac_device *hdac = &edev->hdac;
1458
1459         /* Power up afg */
1460         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1461                                                         AC_PWRST_D0);
1462
1463         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1464         hdac_hdmi_skl_enable_dp12(&edev->hdac);
1465
1466         /*
1467          * As the ELD notify callback request is not entertained while the
1468          * device is in suspend state. Need to manually check detection of
1469          * all pins here.
1470          */
1471         list_for_each_entry(pin, &hdmi->pin_list, head)
1472                 hdac_hdmi_present_sense(pin);
1473
1474         pm_runtime_put_sync(&edev->hdac.dev);
1475 }
1476 #else
1477 #define hdmi_codec_prepare NULL
1478 #define hdmi_codec_complete NULL
1479 #endif
1480
1481 static struct snd_soc_codec_driver hdmi_hda_codec = {
1482         .probe          = hdmi_codec_probe,
1483         .remove         = hdmi_codec_remove,
1484         .idle_bias_off  = true,
1485 };
1486
1487 static void hdac_hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
1488                                         unsigned char *chmap)
1489 {
1490         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1491         struct hdac_hdmi_priv *hdmi = edev->private_data;
1492         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1493         struct hdac_hdmi_pin *pin = pcm->pin;
1494
1495         /* chmap is already set to 0 in caller */
1496         if (!pin)
1497                 return;
1498
1499         memcpy(chmap, pin->chmap, ARRAY_SIZE(pin->chmap));
1500 }
1501
1502 static void hdac_hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
1503                                 unsigned char *chmap, int prepared)
1504 {
1505         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1506         struct hdac_hdmi_priv *hdmi = edev->private_data;
1507         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1508         struct hdac_hdmi_pin *pin = pcm->pin;
1509
1510         mutex_lock(&pin->lock);
1511         pin->chmap_set = true;
1512         memcpy(pin->chmap, chmap, ARRAY_SIZE(pin->chmap));
1513         if (prepared)
1514                 hdac_hdmi_setup_audio_infoframe(edev, pcm->cvt->nid, pin->nid);
1515         mutex_unlock(&pin->lock);
1516 }
1517
1518 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
1519 {
1520         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1521         struct hdac_hdmi_priv *hdmi = edev->private_data;
1522         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1523         struct hdac_hdmi_pin *pin = pcm->pin;
1524
1525         return pin ? true:false;
1526 }
1527
1528 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
1529 {
1530         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1531         struct hdac_hdmi_priv *hdmi = edev->private_data;
1532         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1533         struct hdac_hdmi_pin *pin = pcm->pin;
1534
1535         if (!pin || !pin->eld.eld_valid)
1536                 return 0;
1537
1538         return pin->eld.info.spk_alloc;
1539 }
1540
1541 static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
1542 {
1543         struct hdac_device *codec = &edev->hdac;
1544         struct hdac_hdmi_priv *hdmi_priv;
1545         struct snd_soc_dai_driver *hdmi_dais = NULL;
1546         struct hdac_ext_link *hlink = NULL;
1547         int num_dais = 0;
1548         int ret = 0;
1549
1550         /* hold the ref while we probe */
1551         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1552         if (!hlink) {
1553                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1554                 return -EIO;
1555         }
1556
1557         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1558
1559         hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
1560         if (hdmi_priv == NULL)
1561                 return -ENOMEM;
1562
1563         edev->private_data = hdmi_priv;
1564         snd_hdac_register_chmap_ops(codec, &hdmi_priv->chmap);
1565         hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
1566         hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
1567         hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
1568         hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
1569
1570         dev_set_drvdata(&codec->dev, edev);
1571
1572         INIT_LIST_HEAD(&hdmi_priv->pin_list);
1573         INIT_LIST_HEAD(&hdmi_priv->cvt_list);
1574         INIT_LIST_HEAD(&hdmi_priv->pcm_list);
1575         mutex_init(&hdmi_priv->pin_mutex);
1576
1577         /*
1578          * Turned off in the runtime_suspend during the first explicit
1579          * pm_runtime_suspend call.
1580          */
1581         ret = snd_hdac_display_power(edev->hdac.bus, true);
1582         if (ret < 0) {
1583                 dev_err(&edev->hdac.dev,
1584                         "Cannot turn on display power on i915 err: %d\n",
1585                         ret);
1586                 return ret;
1587         }
1588
1589         ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
1590         if (ret < 0) {
1591                 dev_err(&codec->dev,
1592                         "Failed in parse and map nid with err: %d\n", ret);
1593                 return ret;
1594         }
1595
1596         /* ASoC specific initialization */
1597         ret = snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
1598                                         hdmi_dais, num_dais);
1599
1600         snd_hdac_ext_bus_link_put(edev->ebus, hlink);
1601
1602         return ret;
1603 }
1604
1605 static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
1606 {
1607         struct hdac_hdmi_priv *hdmi = edev->private_data;
1608         struct hdac_hdmi_pin *pin, *pin_next;
1609         struct hdac_hdmi_cvt *cvt, *cvt_next;
1610         struct hdac_hdmi_pcm *pcm, *pcm_next;
1611
1612         snd_soc_unregister_codec(&edev->hdac.dev);
1613
1614         list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
1615                 pcm->cvt = NULL;
1616                 pcm->pin = NULL;
1617                 list_del(&pcm->head);
1618                 kfree(pcm);
1619         }
1620
1621         list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
1622                 list_del(&cvt->head);
1623                 kfree(cvt->name);
1624                 kfree(cvt);
1625         }
1626
1627         list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
1628                 list_del(&pin->head);
1629                 kfree(pin);
1630         }
1631
1632         return 0;
1633 }
1634
1635 #ifdef CONFIG_PM
1636 static int hdac_hdmi_runtime_suspend(struct device *dev)
1637 {
1638         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1639         struct hdac_device *hdac = &edev->hdac;
1640         struct hdac_bus *bus = hdac->bus;
1641         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
1642         struct hdac_ext_link *hlink = NULL;
1643         int err;
1644
1645         dev_dbg(dev, "Enter: %s\n", __func__);
1646
1647         /* controller may not have been initialized for the first time */
1648         if (!bus)
1649                 return 0;
1650
1651         /*
1652          * Power down afg.
1653          * codec_read is preferred over codec_write to set the power state.
1654          * This way verb is send to set the power state and response
1655          * is received. So setting power state is ensured without using loop
1656          * to read the state.
1657          */
1658         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1659                                                         AC_PWRST_D3);
1660         err = snd_hdac_display_power(bus, false);
1661         if (err < 0) {
1662                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
1663                 return err;
1664         }
1665
1666         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
1667         if (!hlink) {
1668                 dev_err(dev, "hdac link not found\n");
1669                 return -EIO;
1670         }
1671
1672         snd_hdac_ext_bus_link_put(ebus, hlink);
1673
1674         return 0;
1675 }
1676
1677 static int hdac_hdmi_runtime_resume(struct device *dev)
1678 {
1679         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1680         struct hdac_device *hdac = &edev->hdac;
1681         struct hdac_bus *bus = hdac->bus;
1682         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
1683         struct hdac_ext_link *hlink = NULL;
1684         int err;
1685
1686         dev_dbg(dev, "Enter: %s\n", __func__);
1687
1688         /* controller may not have been initialized for the first time */
1689         if (!bus)
1690                 return 0;
1691
1692         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
1693         if (!hlink) {
1694                 dev_err(dev, "hdac link not found\n");
1695                 return -EIO;
1696         }
1697
1698         snd_hdac_ext_bus_link_get(ebus, hlink);
1699
1700         err = snd_hdac_display_power(bus, true);
1701         if (err < 0) {
1702                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
1703                 return err;
1704         }
1705
1706         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1707         hdac_hdmi_skl_enable_dp12(&edev->hdac);
1708
1709         /* Power up afg */
1710         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1711                                                         AC_PWRST_D0);
1712
1713         return 0;
1714 }
1715 #else
1716 #define hdac_hdmi_runtime_suspend NULL
1717 #define hdac_hdmi_runtime_resume NULL
1718 #endif
1719
1720 static const struct dev_pm_ops hdac_hdmi_pm = {
1721         SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
1722         .prepare = hdmi_codec_prepare,
1723         .complete = hdmi_codec_complete,
1724 };
1725
1726 static const struct hda_device_id hdmi_list[] = {
1727         HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
1728         HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
1729         HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
1730         {}
1731 };
1732
1733 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
1734
1735 static struct hdac_ext_driver hdmi_driver = {
1736         . hdac = {
1737                 .driver = {
1738                         .name   = "HDMI HDA Codec",
1739                         .pm = &hdac_hdmi_pm,
1740                 },
1741                 .id_table       = hdmi_list,
1742         },
1743         .probe          = hdac_hdmi_dev_probe,
1744         .remove         = hdac_hdmi_dev_remove,
1745 };
1746
1747 static int __init hdmi_init(void)
1748 {
1749         return snd_hda_ext_driver_register(&hdmi_driver);
1750 }
1751
1752 static void __exit hdmi_exit(void)
1753 {
1754         snd_hda_ext_driver_unregister(&hdmi_driver);
1755 }
1756
1757 module_init(hdmi_init);
1758 module_exit(hdmi_exit);
1759
1760 MODULE_LICENSE("GPL v2");
1761 MODULE_DESCRIPTION("HDMI HD codec");
1762 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
1763 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");