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 struct hdac_hdmi_cvt_params {
  50         unsigned int channels_min;
  51         unsigned int channels_max;
  52         u32 rates;
  53         u64 formats;
  54         unsigned int maxbps;
  55 };
  56
  57 struct hdac_hdmi_cvt {
  58         struct list_head head;
  59         hda_nid_t nid;
  60         const char *name;
  61         struct hdac_hdmi_cvt_params params;
  62 };
  63
  64 /* Currently only spk_alloc, more to be added */
  65 struct hdac_hdmi_parsed_eld {
  66         u8 spk_alloc;
  67 };
  68
  69 struct hdac_hdmi_eld {
  70         bool    monitor_present;
  71         bool    eld_valid;
  72         int     eld_size;
  73         char    eld_buffer[ELD_MAX_SIZE];
  74         struct  hdac_hdmi_parsed_eld info;
  75 };
  76
  77 struct hdac_hdmi_pin {
  78         struct list_head head;
  79         hda_nid_t nid;
  80         int num_mux_nids;
  81         hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
  82         struct hdac_hdmi_eld eld;
  83         struct hdac_ext_device *edev;
  84         int repoll_count;
  85         struct delayed_work work;
  86         struct mutex lock;
  87         bool chmap_set;
  88         unsigned char chmap[8]; /* ALSA API channel-map */
  89         int channels; /* current number of channels */
  90 };
  91
  92 struct hdac_hdmi_pcm {
  93         struct list_head head;
  94         int pcm_id;
  95         struct hdac_hdmi_pin *pin;
  96         struct hdac_hdmi_cvt *cvt;
  97         struct snd_jack *jack;
  98 };
  99
 100 struct hdac_hdmi_dai_pin_map {
 101         int dai_id;
 102         struct hdac_hdmi_pin *pin;
 103         struct hdac_hdmi_cvt *cvt;
 104 };
 105
 106 struct hdac_hdmi_priv {
 107         struct hdac_hdmi_dai_pin_map dai_map[HDA_MAX_CVTS];
 108         struct list_head pin_list;
 109         struct list_head cvt_list;
 110         struct list_head pcm_list;
 111         int num_pin;
 112         int num_cvt;
 113         struct mutex pin_mutex;
 114         struct hdac_chmap chmap;
 115 };
 116
 117 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
 118                                                 int pcm_idx)
 119 {
 120         struct hdac_hdmi_pcm *pcm;
 121
 122         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 123                 if (pcm->pcm_id == pcm_idx)
 124                         return pcm;
 125         }
 126
 127         return NULL;
 128 }
 129
 130 static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev)
 131 {
 132         struct hdac_device *hdac = dev_to_hdac_dev(dev);
 133
 134         return to_ehdac_device(hdac);
 135 }
 136
 137 static unsigned int sad_format(const u8 *sad)
 138 {
 139         return ((sad[0] >> 0x3) & 0x1f);
 140 }
 141
 142 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
 143 {
 144         return (sad[2] & 7);
 145 }
 146
 147 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
 148                                                 void *eld)
 149 {
 150         u64 formats = SNDRV_PCM_FMTBIT_S16;
 151         int i;
 152         const u8 *sad, *eld_buf = eld;
 153
 154         sad = drm_eld_sad(eld_buf);
 155         if (!sad)
 156                 goto format_constraint;
 157
 158         for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
 159                 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
 160
 161                         /*
 162                          * the controller support 20 and 24 bits in 32 bit
 163                          * container so we set S32
 164                          */
 165                         if (sad_sample_bits_lpcm(sad) & 0x6)
 166                                 formats |= SNDRV_PCM_FMTBIT_S32;
 167                 }
 168         }
 169
 170 format_constraint:
 171         return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
 172                                 formats);
 173
 174 }
 175
 176  /* HDMI ELD routines */
 177 static unsigned int hdac_hdmi_get_eld_data(struct hdac_device *codec,
 178                                 hda_nid_t nid, int byte_index)
 179 {
 180         unsigned int val;
 181
 182         val = snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_ELDD,
 183                                                         byte_index);
 184
 185         dev_dbg(&codec->dev, "HDMI: ELD data byte %d: 0x%x\n",
 186                                         byte_index, val);
 187
 188         return val;
 189 }
 190
 191 static int hdac_hdmi_get_eld_size(struct hdac_device *codec, hda_nid_t nid)
 192 {
 193         return snd_hdac_codec_read(codec, nid, 0, AC_VERB_GET_HDMI_DIP_SIZE,
 194                                                  AC_DIPSIZE_ELD_BUF);
 195 }
 196
 197 /*
 198  * This function queries the ELD size and ELD data and fills in the buffer
 199  * passed by user
 200  */
 201 static int hdac_hdmi_get_eld(struct hdac_device *codec, hda_nid_t nid,
 202                              unsigned char *buf, int *eld_size)
 203 {
 204         int i, size, ret = 0;
 205
 206         /*
 207          * ELD size is initialized to zero in caller function. If no errors and
 208          * ELD is valid, actual eld_size is assigned.
 209          */
 210
 211         size = hdac_hdmi_get_eld_size(codec, nid);
 212         if (size < ELD_FIXED_BYTES || size > ELD_MAX_SIZE) {
 213                 dev_err(&codec->dev, "HDMI: invalid ELD buf size %d\n", size);
 214                 return -ERANGE;
 215         }
 216
 217         /* set ELD buffer */
 218         for (i = 0; i < size; i++) {
 219                 unsigned int val = hdac_hdmi_get_eld_data(codec, nid, i);
 220                 /*
 221                  * Graphics driver might be writing to ELD buffer right now.
 222                  * Just abort. The caller will repoll after a while.
 223                  */
 224                 if (!(val & AC_ELDD_ELD_VALID)) {
 225                         dev_err(&codec->dev,
 226                                 "HDMI: invalid ELD data byte %d\n", i);
 227                         ret = -EINVAL;
 228                         goto error;
 229                 }
 230                 val &= AC_ELDD_ELD_DATA;
 231                 /*
 232                  * The first byte cannot be zero. This can happen on some DVI
 233                  * connections. Some Intel chips may also need some 250ms delay
 234                  * to return non-zero ELD data, even when the graphics driver
 235                  * correctly writes ELD content before setting ELD_valid bit.
 236                  */
 237                 if (!val && !i) {
 238                         dev_err(&codec->dev, "HDMI: 0 ELD data\n");
 239                         ret = -EINVAL;
 240                         goto error;
 241                 }
 242                 buf[i] = val;
 243         }
 244
 245         *eld_size = size;
 246 error:
 247         return ret;
 248 }
 249
 250 static int hdac_hdmi_setup_stream(struct hdac_ext_device *hdac,
 251                                 hda_nid_t cvt_nid, hda_nid_t pin_nid,
 252                                 u32 stream_tag, int format)
 253 {
 254         unsigned int val;
 255
 256         dev_dbg(&hdac->hdac.dev, "cvt nid %d pnid %d stream %d format 0x%x\n",
 257                         cvt_nid, pin_nid, stream_tag, format);
 258
 259         val = (stream_tag << 4);
 260
 261         snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
 262                                 AC_VERB_SET_CHANNEL_STREAMID, val);
 263         snd_hdac_codec_write(&hdac->hdac, cvt_nid, 0,
 264                                 AC_VERB_SET_STREAM_FORMAT, format);
 265
 266         return 0;
 267 }
 268
 269 static void
 270 hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
 271                                 int packet_index, int byte_index)
 272 {
 273         int val;
 274
 275         val = (packet_index << 5) | (byte_index & 0x1f);
 276
 277         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 278                                 AC_VERB_SET_HDMI_DIP_INDEX, val);
 279 }
 280
 281 struct dp_audio_infoframe {
 282         u8 type; /* 0x84 */
 283         u8 len;  /* 0x1b */
 284         u8 ver;  /* 0x11 << 2 */
 285
 286         u8 CC02_CT47;   /* match with HDMI infoframe from this on */
 287         u8 SS01_SF24;
 288         u8 CXT04;
 289         u8 CA;
 290         u8 LFEPBL01_LSV36_DM_INH7;
 291 };
 292
 293 static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac,
 294                                 hda_nid_t cvt_nid, hda_nid_t pin_nid)
 295 {
 296         uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
 297         struct hdmi_audio_infoframe frame;
 298         struct dp_audio_infoframe dp_ai;
 299         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 300         struct hdac_hdmi_pin *pin;
 301         u8 *dip;
 302         int ret;
 303         int i;
 304         const u8 *eld_buf;
 305         u8 conn_type;
 306         int channels, ca;
 307
 308         list_for_each_entry(pin, &hdmi->pin_list, head) {
 309                 if (pin->nid == pin_nid)
 310                         break;
 311         }
 312
 313         ca = snd_hdac_channel_allocation(&hdac->hdac, pin->eld.info.spk_alloc,
 314                         pin->channels, pin->chmap_set, true, pin->chmap);
 315
 316         channels = snd_hdac_get_active_channels(ca);
 317         hdmi->chmap.ops.set_channel_count(&hdac->hdac, cvt_nid, channels);
 318
 319         snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
 320                                 pin->channels, pin->chmap, pin->chmap_set);
 321
 322         eld_buf = pin->eld.eld_buffer;
 323         conn_type = drm_eld_get_conn_type(eld_buf);
 324
 325         switch (conn_type) {
 326         case DRM_ELD_CONN_TYPE_HDMI:
 327                 hdmi_audio_infoframe_init(&frame);
 328
 329                 frame.channels = channels;
 330                 frame.channel_allocation = ca;
 331
 332                 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
 333                 if (ret < 0)
 334                         return ret;
 335
 336                 break;
 337
 338         case DRM_ELD_CONN_TYPE_DP:
 339                 memset(&dp_ai, 0, sizeof(dp_ai));
 340                 dp_ai.type      = 0x84;
 341                 dp_ai.len       = 0x1b;
 342                 dp_ai.ver       = 0x11 << 2;
 343                 dp_ai.CC02_CT47 = channels - 1;
 344                 dp_ai.CA        = ca;
 345
 346                 dip = (u8 *)&dp_ai;
 347                 break;
 348
 349         default:
 350                 dev_err(&hdac->hdac.dev, "Invalid connection type: %d\n",
 351                                                 conn_type);
 352                 return -EIO;
 353         }
 354
 355         /* stop infoframe transmission */
 356         hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
 357         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 358                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
 359
 360
 361         /*  Fill infoframe. Index auto-incremented */
 362         hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
 363         if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
 364                 for (i = 0; i < sizeof(buffer); i++)
 365                         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 366                                 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
 367         } else {
 368                 for (i = 0; i < sizeof(dp_ai); i++)
 369                         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 370                                 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
 371         }
 372
 373         /* Start infoframe */
 374         hdac_hdmi_set_dip_index(hdac, pin_nid, 0x0, 0x0);
 375         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 376                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
 377
 378         return 0;
 379 }
 380
 381 static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
 382                 struct hdac_hdmi_dai_pin_map *dai_map, unsigned int pwr_state)
 383 {
 384         /* Power up pin widget */
 385         if (!snd_hdac_check_power_state(&edev->hdac, dai_map->pin->nid,
 386                                                 pwr_state))
 387                 snd_hdac_codec_write(&edev->hdac, dai_map->pin->nid, 0,
 388                         AC_VERB_SET_POWER_STATE, pwr_state);
 389
 390         /* Power up converter */
 391         if (!snd_hdac_check_power_state(&edev->hdac, dai_map->cvt->nid,
 392                                                 pwr_state))
 393                 snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
 394                         AC_VERB_SET_POWER_STATE, pwr_state);
 395 }
 396
 397 static int hdac_hdmi_playback_prepare(struct snd_pcm_substream *substream,
 398                                 struct snd_soc_dai *dai)
 399 {
 400         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 401         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 402         struct hdac_hdmi_dai_pin_map *dai_map;
 403         struct hdac_hdmi_pin *pin;
 404         struct hdac_ext_dma_params *dd;
 405         int ret;
 406
 407         dai_map = &hdmi->dai_map[dai->id];
 408         pin = dai_map->pin;
 409
 410         dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
 411         dev_dbg(&hdac->hdac.dev, "stream tag from cpu dai %d format in cvt 0x%x\n",
 412                         dd->stream_tag, dd->format);
 413
 414         mutex_lock(&pin->lock);
 415         pin->channels = substream->runtime->channels;
 416
 417         ret = hdac_hdmi_setup_audio_infoframe(hdac, dai_map->cvt->nid,
 418                                                 dai_map->pin->nid);
 419         mutex_unlock(&pin->lock);
 420         if (ret < 0)
 421                 return ret;
 422
 423         return hdac_hdmi_setup_stream(hdac, dai_map->cvt->nid,
 424                         dai_map->pin->nid, dd->stream_tag, dd->format);
 425 }
 426
 427 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
 428         struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
 429 {
 430         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 431         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 432         struct hdac_hdmi_dai_pin_map *dai_map;
 433         struct hdac_hdmi_pin *pin;
 434         struct hdac_ext_dma_params *dd;
 435
 436         dai_map = &hdmi->dai_map[dai->id];
 437         pin = dai_map->pin;
 438
 439         if (!pin)
 440                 return -ENODEV;
 441
 442         if ((!pin->eld.monitor_present) || (!pin->eld.eld_valid)) {
 443                 dev_err(&hdac->hdac.dev, "device is not configured for this pin: %d\n",
 444                                                                 pin->nid);
 445                 return -ENODEV;
 446         }
 447
 448         dd = snd_soc_dai_get_dma_data(dai, substream);
 449         if (!dd) {
 450                 dd = kzalloc(sizeof(*dd), GFP_KERNEL);
 451                 if (!dd)
 452                         return -ENOMEM;
 453         }
 454
 455         dd->format = snd_hdac_calc_stream_format(params_rate(hparams),
 456                         params_channels(hparams), params_format(hparams),
 457                         24, 0);
 458
 459         snd_soc_dai_set_dma_data(dai, substream, (void *)dd);
 460
 461         return 0;
 462 }
 463
 464 static int hdac_hdmi_playback_cleanup(struct snd_pcm_substream *substream,
 465                 struct snd_soc_dai *dai)
 466 {
 467         struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai);
 468         struct hdac_ext_dma_params *dd;
 469         struct hdac_hdmi_priv *hdmi = edev->private_data;
 470         struct hdac_hdmi_dai_pin_map *dai_map;
 471
 472         dai_map = &hdmi->dai_map[dai->id];
 473
 474         dd = (struct hdac_ext_dma_params *)snd_soc_dai_get_dma_data(dai, substream);
 475
 476         if (dd) {
 477                 snd_soc_dai_set_dma_data(dai, substream, NULL);
 478                 kfree(dd);
 479         }
 480
 481         return 0;
 482 }
 483
 484 static void hdac_hdmi_enable_cvt(struct hdac_ext_device *edev,
 485                 struct hdac_hdmi_dai_pin_map *dai_map)
 486 {
 487         /* Enable transmission */
 488         snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
 489                         AC_VERB_SET_DIGI_CONVERT_1, 1);
 490
 491         /* Category Code (CC) to zero */
 492         snd_hdac_codec_write(&edev->hdac, dai_map->cvt->nid, 0,
 493                         AC_VERB_SET_DIGI_CONVERT_2, 0);
 494 }
 495
 496 static int hdac_hdmi_enable_pin(struct hdac_ext_device *hdac,
 497                 struct hdac_hdmi_dai_pin_map *dai_map)
 498 {
 499         int mux_idx;
 500         struct hdac_hdmi_pin *pin = dai_map->pin;
 501
 502         for (mux_idx = 0; mux_idx < pin->num_mux_nids; mux_idx++) {
 503                 if (pin->mux_nids[mux_idx] == dai_map->cvt->nid) {
 504                         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 505                                         AC_VERB_SET_CONNECT_SEL, mux_idx);
 506                         break;
 507                 }
 508         }
 509
 510         if (mux_idx == pin->num_mux_nids)
 511                 return -EIO;
 512
 513         /* Enable out path for this pin widget */
 514         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 515                         AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
 516
 517         hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D0);
 518
 519         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 520                         AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_UNMUTE);
 521
 522         return 0;
 523 }
 524
 525 static int hdac_hdmi_query_pin_connlist(struct hdac_ext_device *hdac,
 526                                         struct hdac_hdmi_pin *pin)
 527 {
 528         if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
 529                 dev_warn(&hdac->hdac.dev,
 530                         "HDMI: pin %d wcaps %#x does not support connection list\n",
 531                         pin->nid, get_wcaps(&hdac->hdac, pin->nid));
 532                 return -EINVAL;
 533         }
 534
 535         pin->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
 536                         pin->mux_nids, HDA_MAX_CONNECTIONS);
 537         if (pin->num_mux_nids == 0)
 538                 dev_warn(&hdac->hdac.dev, "No connections found for pin: %d\n",
 539                                                                 pin->nid);
 540
 541         dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin: %d\n",
 542                         pin->num_mux_nids, pin->nid);
 543
 544         return pin->num_mux_nids;
 545 }
 546
 547 /*
 548  * Query pcm list and return pin widget to which stream is routed.
 549  *
 550  * Also query connection list of the pin, to validate the cvt to pin map.
 551  *
 552  * Same stream rendering to multiple pins simultaneously can be done
 553  * possibly, but not supported for now in driver. So return the first pin
 554  * connected.
 555  */
 556 static struct hdac_hdmi_pin *hdac_hdmi_get_pin_from_cvt(
 557                         struct hdac_ext_device *edev,
 558                         struct hdac_hdmi_priv *hdmi,
 559                         struct hdac_hdmi_cvt *cvt)
 560 {
 561         struct hdac_hdmi_pcm *pcm;
 562         struct hdac_hdmi_pin *pin = NULL;
 563         int ret, i;
 564
 565         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 566                 if (pcm->cvt == cvt) {
 567                         pin = pcm->pin;
 568                         break;
 569                 }
 570         }
 571
 572         if (pin) {
 573                 ret = hdac_hdmi_query_pin_connlist(edev, pin);
 574                 if (ret < 0)
 575                         return NULL;
 576
 577                 for (i = 0; i < pin->num_mux_nids; i++) {
 578                         if (pin->mux_nids[i] == cvt->nid)
 579                                 return pin;
 580                 }
 581         }
 582
 583         return NULL;
 584 }
 585
 586 /*
 587  * This tries to get a valid pin and set the HW constraints based on the
 588  * ELD. Even if a valid pin is not found return success so that device open
 589  * doesn't fail.
 590  */
 591 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
 592                         struct snd_soc_dai *dai)
 593 {
 594         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 595         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 596         struct hdac_hdmi_dai_pin_map *dai_map;
 597         struct hdac_hdmi_cvt *cvt;
 598         struct hdac_hdmi_pin *pin;
 599         int ret;
 600
 601         dai_map = &hdmi->dai_map[dai->id];
 602
 603         cvt = dai_map->cvt;
 604         pin = hdac_hdmi_get_pin_from_cvt(hdac, hdmi, cvt);
 605
 606         /*
 607          * To make PA and other userland happy.
 608          * userland scans devices so returning error does not help.
 609          */
 610         if (!pin)
 611                 return 0;
 612
 613         if ((!pin->eld.monitor_present) ||
 614                         (!pin->eld.eld_valid)) {
 615
 616                 dev_warn(&hdac->hdac.dev,
 617                         "Failed: monitor present? %d ELD valid?: %d for pin: %d\n",
 618                         pin->eld.monitor_present, pin->eld.eld_valid, pin->nid);
 619
 620                 return 0;
 621         }
 622
 623         dai_map->pin = pin;
 624
 625         hdac_hdmi_enable_cvt(hdac, dai_map);
 626         ret = hdac_hdmi_enable_pin(hdac, dai_map);
 627         if (ret < 0)
 628                 return ret;
 629
 630         ret = hdac_hdmi_eld_limit_formats(substream->runtime,
 631                                 pin->eld.eld_buffer);
 632         if (ret < 0)
 633                 return ret;
 634
 635         return snd_pcm_hw_constraint_eld(substream->runtime,
 636                                 pin->eld.eld_buffer);
 637 }
 638
 639 static int hdac_hdmi_trigger(struct snd_pcm_substream *substream, int cmd,
 640                 struct snd_soc_dai *dai)
 641 {
 642         struct hdac_hdmi_dai_pin_map *dai_map;
 643         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 644         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 645         int ret;
 646
 647         dai_map = &hdmi->dai_map[dai->id];
 648         if (cmd == SNDRV_PCM_TRIGGER_RESUME) {
 649                 ret = hdac_hdmi_enable_pin(hdac, dai_map);
 650                 if (ret < 0)
 651                         return ret;
 652
 653                 return hdac_hdmi_playback_prepare(substream, dai);
 654         }
 655
 656         return 0;
 657 }
 658
 659 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
 660                 struct snd_soc_dai *dai)
 661 {
 662         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 663         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 664         struct hdac_hdmi_dai_pin_map *dai_map;
 665
 666         dai_map = &hdmi->dai_map[dai->id];
 667
 668         if (dai_map->pin) {
 669                 snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
 670                                 AC_VERB_SET_CHANNEL_STREAMID, 0);
 671                 snd_hdac_codec_write(&hdac->hdac, dai_map->cvt->nid, 0,
 672                                 AC_VERB_SET_STREAM_FORMAT, 0);
 673
 674                 hdac_hdmi_set_power_state(hdac, dai_map, AC_PWRST_D3);
 675
 676                 snd_hdac_codec_write(&hdac->hdac, dai_map->pin->nid, 0,
 677                         AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE);
 678
 679                 mutex_lock(&dai_map->pin->lock);
 680                 dai_map->pin->chmap_set = false;
 681                 memset(dai_map->pin->chmap, 0, sizeof(dai_map->pin->chmap));
 682                 dai_map->pin->channels = 0;
 683                 mutex_unlock(&dai_map->pin->lock);
 684
 685                 dai_map->pin = NULL;
 686         }
 687 }
 688
 689 static int
 690 hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt)
 691 {
 692         unsigned int chans;
 693         struct hdac_ext_device *edev = to_ehdac_device(hdac);
 694         struct hdac_hdmi_priv *hdmi = edev->private_data;
 695         int err;
 696
 697         chans = get_wcaps(hdac, cvt->nid);
 698         chans = get_wcaps_channels(chans);
 699
 700         cvt->params.channels_min = 2;
 701
 702         cvt->params.channels_max = chans;
 703         if (chans > hdmi->chmap.channels_max)
 704                 hdmi->chmap.channels_max = chans;
 705
 706         err = snd_hdac_query_supported_pcm(hdac, cvt->nid,
 707                         &cvt->params.rates,
 708                         &cvt->params.formats,
 709                         &cvt->params.maxbps);
 710         if (err < 0)
 711                 dev_err(&hdac->dev,
 712                         "Failed to query pcm params for nid %d: %d\n",
 713                         cvt->nid, err);
 714
 715         return err;
 716 }
 717
 718 static int hdac_hdmi_fill_widget_info(struct device *dev,
 719                                 struct snd_soc_dapm_widget *w,
 720                                 enum snd_soc_dapm_type id, void *priv,
 721                                 const char *wname, const char *stream,
 722                                 struct snd_kcontrol_new *wc, int numkc)
 723 {
 724         w->id = id;
 725         w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
 726         if (!w->name)
 727                 return -ENOMEM;
 728
 729         w->sname = stream;
 730         w->reg = SND_SOC_NOPM;
 731         w->shift = 0;
 732         w->kcontrol_news = wc;
 733         w->num_kcontrols = numkc;
 734         w->priv = priv;
 735
 736         return 0;
 737 }
 738
 739 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
 740                 const char *sink, const char *control, const char *src,
 741                 int (*handler)(struct snd_soc_dapm_widget *src,
 742                         struct snd_soc_dapm_widget *sink))
 743 {
 744         route->sink = sink;
 745         route->source = src;
 746         route->control = control;
 747         route->connected = handler;
 748 }
 749
 750 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_ext_device *edev,
 751                                         struct hdac_hdmi_pin *pin)
 752 {
 753         struct hdac_hdmi_priv *hdmi = edev->private_data;
 754         struct hdac_hdmi_pcm *pcm = NULL;
 755
 756         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 757                 if (pcm->pin == pin)
 758                         return pcm;
 759         }
 760
 761         return NULL;
 762 }
 763
 764 /*
 765  * Based on user selection, map the PINs with the PCMs.
 766  */
 767 static int hdac_hdmi_set_pin_mux(struct snd_kcontrol *kcontrol,
 768                 struct snd_ctl_elem_value *ucontrol)
 769 {
 770         int ret;
 771         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 772         struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
 773         struct snd_soc_dapm_context *dapm = w->dapm;
 774         struct hdac_hdmi_pin *pin = w->priv;
 775         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
 776         struct hdac_hdmi_priv *hdmi = edev->private_data;
 777         struct hdac_hdmi_pcm *pcm = NULL;
 778         const char *cvt_name =  e->texts[ucontrol->value.enumerated.item[0]];
 779
 780         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
 781         if (ret < 0)
 782                 return ret;
 783
 784         mutex_lock(&hdmi->pin_mutex);
 785         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 786                 if (pcm->pin == pin)
 787                         pcm->pin = NULL;
 788
 789                 /*
 790                  * Jack status is not reported during device probe as the
 791                  * PCMs are not registered by then. So report it here.
 792                  */
 793                 if (!strcmp(cvt_name, pcm->cvt->name) && !pcm->pin) {
 794                         pcm->pin = pin;
 795                         if (pin->eld.monitor_present && pin->eld.eld_valid) {
 796                                 dev_dbg(&edev->hdac.dev,
 797                                         "jack report for pcm=%d\n",
 798                                         pcm->pcm_id);
 799
 800                                 snd_jack_report(pcm->jack, SND_JACK_AVOUT);
 801                         }
 802                         mutex_unlock(&hdmi->pin_mutex);
 803                         return ret;
 804                 }
 805         }
 806         mutex_unlock(&hdmi->pin_mutex);
 807
 808         return ret;
 809 }
 810
 811 /*
 812  * Ideally the Mux inputs should be based on the num_muxs enumerated, but
 813  * the display driver seem to be programming the connection list for the pin
 814  * widget runtime.
 815  *
 816  * So programming all the possible inputs for the mux, the user has to take
 817  * care of selecting the right one and leaving all other inputs selected to
 818  * "NONE"
 819  */
 820 static int hdac_hdmi_create_pin_muxs(struct hdac_ext_device *edev,
 821                                 struct hdac_hdmi_pin *pin,
 822                                 struct snd_soc_dapm_widget *widget,
 823                                 const char *widget_name)
 824 {
 825         struct hdac_hdmi_priv *hdmi = edev->private_data;
 826         struct snd_kcontrol_new *kc;
 827         struct hdac_hdmi_cvt *cvt;
 828         struct soc_enum *se;
 829         char kc_name[NAME_SIZE];
 830         char mux_items[NAME_SIZE];
 831         /* To hold inputs to the Pin mux */
 832         char *items[HDA_MAX_CONNECTIONS];
 833         int i = 0;
 834         int num_items = hdmi->num_cvt + 1;
 835
 836         kc = devm_kzalloc(&edev->hdac.dev, sizeof(*kc), GFP_KERNEL);
 837         if (!kc)
 838                 return -ENOMEM;
 839
 840         se = devm_kzalloc(&edev->hdac.dev, sizeof(*se), GFP_KERNEL);
 841         if (!se)
 842                 return -ENOMEM;
 843
 844         sprintf(kc_name, "Pin %d Input", pin->nid);
 845         kc->name = devm_kstrdup(&edev->hdac.dev, kc_name, GFP_KERNEL);
 846         if (!kc->name)
 847                 return -ENOMEM;
 848
 849         kc->private_value = (long)se;
 850         kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 851         kc->access = 0;
 852         kc->info = snd_soc_info_enum_double;
 853         kc->put = hdac_hdmi_set_pin_mux;
 854         kc->get = snd_soc_dapm_get_enum_double;
 855
 856         se->reg = SND_SOC_NOPM;
 857
 858         /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
 859         se->items = num_items;
 860         se->mask = roundup_pow_of_two(se->items) - 1;
 861
 862         sprintf(mux_items, "NONE");
 863         items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
 864         if (!items[i])
 865                 return -ENOMEM;
 866
 867         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 868                 i++;
 869                 sprintf(mux_items, "cvt %d", cvt->nid);
 870                 items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
 871                 if (!items[i])
 872                         return -ENOMEM;
 873         }
 874
 875         se->texts = devm_kmemdup(&edev->hdac.dev, items,
 876                         (num_items  * sizeof(char *)), GFP_KERNEL);
 877         if (!se->texts)
 878                 return -ENOMEM;
 879
 880         return hdac_hdmi_fill_widget_info(&edev->hdac.dev, widget,
 881                         snd_soc_dapm_mux, pin, widget_name, NULL, kc, 1);
 882 }
 883
 884 /* Add cvt <- input <- mux route map */
 885 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_ext_device *edev,
 886                         struct snd_soc_dapm_widget *widgets,
 887                         struct snd_soc_dapm_route *route, int rindex)
 888 {
 889         struct hdac_hdmi_priv *hdmi = edev->private_data;
 890         const struct snd_kcontrol_new *kc;
 891         struct soc_enum *se;
 892         int mux_index = hdmi->num_cvt + hdmi->num_pin;
 893         int i, j;
 894
 895         for (i = 0; i < hdmi->num_pin; i++) {
 896                 kc = widgets[mux_index].kcontrol_news;
 897                 se = (struct soc_enum *)kc->private_value;
 898                 for (j = 0; j < hdmi->num_cvt; j++) {
 899                         hdac_hdmi_fill_route(&route[rindex],
 900                                         widgets[mux_index].name,
 901                                         se->texts[j + 1],
 902                                         widgets[j].name, NULL);
 903
 904                         rindex++;
 905                 }
 906
 907                 mux_index++;
 908         }
 909 }
 910
 911 /*
 912  * Widgets are added in the below sequence
 913  *      Converter widgets for num converters enumerated
 914  *      Pin widgets for num pins enumerated
 915  *      Pin mux widgets to represent connenction list of pin widget
 916  *
 917  * Total widgets elements = num_cvt + num_pin + num_pin;
 918  *
 919  * Routes are added as below:
 920  *      pin mux -> pin (based on num_pins)
 921  *      cvt -> "Input sel control" -> pin_mux
 922  *
 923  * Total route elements:
 924  *      num_pins + (pin_muxes * num_cvt)
 925  */
 926 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
 927 {
 928         struct snd_soc_dapm_widget *widgets;
 929         struct snd_soc_dapm_route *route;
 930         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
 931         struct hdac_hdmi_priv *hdmi = edev->private_data;
 932         struct snd_soc_dai_driver *dai_drv = dapm->component->dai_drv;
 933         char widget_name[NAME_SIZE];
 934         struct hdac_hdmi_cvt *cvt;
 935         struct hdac_hdmi_pin *pin;
 936         int ret, i = 0, num_routes = 0;
 937
 938         if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
 939                 return -EINVAL;
 940
 941         widgets = devm_kzalloc(dapm->dev,
 942                 (sizeof(*widgets) * ((2 * hdmi->num_pin) + hdmi->num_cvt)),
 943                 GFP_KERNEL);
 944
 945         if (!widgets)
 946                 return -ENOMEM;
 947
 948         /* DAPM widgets to represent each converter widget */
 949         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 950                 sprintf(widget_name, "Converter %d", cvt->nid);
 951                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
 952                         snd_soc_dapm_aif_in, &cvt->nid,
 953                         widget_name, dai_drv[i].playback.stream_name, NULL, 0);
 954                 if (ret < 0)
 955                         return ret;
 956                 i++;
 957         }
 958
 959         list_for_each_entry(pin, &hdmi->pin_list, head) {
 960                 sprintf(widget_name, "hif%d Output", pin->nid);
 961                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
 962                                 snd_soc_dapm_output, &pin->nid,
 963                                 widget_name, NULL, NULL, 0);
 964                 if (ret < 0)
 965                         return ret;
 966                 i++;
 967         }
 968
 969         /* DAPM widgets to represent the connection list to pin widget */
 970         list_for_each_entry(pin, &hdmi->pin_list, head) {
 971                 sprintf(widget_name, "Pin %d Mux", pin->nid);
 972                 ret = hdac_hdmi_create_pin_muxs(edev, pin, &widgets[i],
 973                                                         widget_name);
 974                 if (ret < 0)
 975                         return ret;
 976                 i++;
 977
 978                 /* For cvt to pin_mux mapping */
 979                 num_routes += hdmi->num_cvt;
 980
 981                 /* For pin_mux to pin mapping */
 982                 num_routes++;
 983         }
 984
 985         route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
 986                                                         GFP_KERNEL);
 987         if (!route)
 988                 return -ENOMEM;
 989
 990         i = 0;
 991         /* Add pin <- NULL <- mux route map */
 992         list_for_each_entry(pin, &hdmi->pin_list, head) {
 993                 int sink_index = i + hdmi->num_cvt;
 994                 int src_index = sink_index + hdmi->num_pin;
 995
 996                 hdac_hdmi_fill_route(&route[i],
 997                                 widgets[sink_index].name, NULL,
 998                                 widgets[src_index].name, NULL);
 999                 i++;
1000
1001         }
1002
1003         hdac_hdmi_add_pinmux_cvt_route(edev, widgets, route, i);
1004
1005         snd_soc_dapm_new_controls(dapm, widgets,
1006                 ((2 * hdmi->num_pin) + hdmi->num_cvt));
1007
1008         snd_soc_dapm_add_routes(dapm, route, num_routes);
1009         snd_soc_dapm_new_widgets(dapm->card);
1010
1011         return 0;
1012
1013 }
1014
1015 static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev)
1016 {
1017         struct hdac_hdmi_priv *hdmi = edev->private_data;
1018         struct hdac_hdmi_dai_pin_map *dai_map;
1019         struct hdac_hdmi_cvt *cvt;
1020         int dai_id = 0;
1021
1022         if (list_empty(&hdmi->cvt_list))
1023                 return -EINVAL;
1024
1025         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1026                 dai_map = &hdmi->dai_map[dai_id];
1027                 dai_map->dai_id = dai_id;
1028                 dai_map->cvt = cvt;
1029
1030                 dai_id++;
1031
1032                 if (dai_id == HDA_MAX_CVTS) {
1033                         dev_warn(&edev->hdac.dev,
1034                                 "Max dais supported: %d\n", dai_id);
1035                         break;
1036                 }
1037         }
1038
1039         return 0;
1040 }
1041
1042 static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
1043 {
1044         struct hdac_hdmi_priv *hdmi = edev->private_data;
1045         struct hdac_hdmi_cvt *cvt;
1046         char name[NAME_SIZE];
1047
1048         cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
1049         if (!cvt)
1050                 return -ENOMEM;
1051
1052         cvt->nid = nid;
1053         sprintf(name, "cvt %d", cvt->nid);
1054         cvt->name = kstrdup(name, GFP_KERNEL);
1055
1056         list_add_tail(&cvt->head, &hdmi->cvt_list);
1057         hdmi->num_cvt++;
1058
1059         return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
1060 }
1061
1062 static void hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
1063                         struct hdac_hdmi_pin *pin)
1064 {
1065         pin->eld.info.spk_alloc = pin->eld.eld_buffer[DRM_ELD_SPEAKER];
1066 }
1067
1068 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, int repoll)
1069 {
1070         struct hdac_ext_device *edev = pin->edev;
1071         struct hdac_hdmi_priv *hdmi = edev->private_data;
1072         struct hdac_hdmi_pcm *pcm;
1073         int val;
1074
1075         pin->repoll_count = repoll;
1076
1077         pm_runtime_get_sync(&edev->hdac.dev);
1078         val = snd_hdac_codec_read(&edev->hdac, pin->nid, 0,
1079                                         AC_VERB_GET_PIN_SENSE, 0);
1080
1081         dev_dbg(&edev->hdac.dev, "Pin sense val %x for pin: %d\n",
1082                                                 val, pin->nid);
1083
1084
1085         mutex_lock(&hdmi->pin_mutex);
1086         pin->eld.monitor_present = !!(val & AC_PINSENSE_PRESENCE);
1087         pin->eld.eld_valid = !!(val & AC_PINSENSE_ELDV);
1088
1089         pcm = hdac_hdmi_get_pcm(edev, pin);
1090
1091         if (!pin->eld.monitor_present || !pin->eld.eld_valid) {
1092
1093                 dev_dbg(&edev->hdac.dev, "%s: disconnect for pin %d\n",
1094                                                 __func__, pin->nid);
1095
1096                 /*
1097                  * PCMs are not registered during device probe, so don't
1098                  * report jack here. It will be done in usermode mux
1099                  * control select.
1100                  */
1101                 if (pcm) {
1102                         dev_dbg(&edev->hdac.dev,
1103                                 "jack report for pcm=%d\n", pcm->pcm_id);
1104
1105                         snd_jack_report(pcm->jack, 0);
1106                 }
1107
1108                 mutex_unlock(&hdmi->pin_mutex);
1109                 goto put_hdac_device;
1110         }
1111
1112         if (pin->eld.monitor_present && pin->eld.eld_valid) {
1113                 /* TODO: use i915 component for reading ELD later */
1114                 if (hdac_hdmi_get_eld(&edev->hdac, pin->nid,
1115                                 pin->eld.eld_buffer,
1116                                 &pin->eld.eld_size) == 0) {
1117
1118                         if (pcm) {
1119                                 dev_dbg(&edev->hdac.dev,
1120                                         "jack report for pcm=%d\n",
1121                                         pcm->pcm_id);
1122
1123                                 snd_jack_report(pcm->jack, SND_JACK_AVOUT);
1124                         }
1125                         hdac_hdmi_parse_eld(edev, pin);
1126
1127                         print_hex_dump_debug("ELD: ",
1128                                         DUMP_PREFIX_OFFSET, 16, 1,
1129                                         pin->eld.eld_buffer, pin->eld.eld_size,
1130                                         true);
1131                 } else {
1132                         pin->eld.monitor_present = false;
1133                         pin->eld.eld_valid = false;
1134
1135                         if (pcm) {
1136                                 dev_dbg(&edev->hdac.dev,
1137                                         "jack report for pcm=%d\n",
1138                                         pcm->pcm_id);
1139
1140                                 snd_jack_report(pcm->jack, 0);
1141                         }
1142                 }
1143         }
1144
1145         mutex_unlock(&hdmi->pin_mutex);
1146
1147         /*
1148          * Sometimes the pin_sense may present invalid monitor
1149          * present and eld_valid. If ELD data is not valid, loop few
1150          * more times to get correct pin sense and valid ELD.
1151          */
1152         if ((!pin->eld.monitor_present || !pin->eld.eld_valid) && repoll)
1153                 schedule_delayed_work(&pin->work, msecs_to_jiffies(300));
1154
1155 put_hdac_device:
1156         pm_runtime_put_sync(&edev->hdac.dev);
1157 }
1158
1159 static void hdac_hdmi_repoll_eld(struct work_struct *work)
1160 {
1161         struct hdac_hdmi_pin *pin =
1162                 container_of(to_delayed_work(work), struct hdac_hdmi_pin, work);
1163
1164         /* picked from legacy HDA driver */
1165         if (pin->repoll_count++ > 6)
1166                 pin->repoll_count = 0;
1167
1168         hdac_hdmi_present_sense(pin, pin->repoll_count);
1169 }
1170
1171 static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
1172 {
1173         struct hdac_hdmi_priv *hdmi = edev->private_data;
1174         struct hdac_hdmi_pin *pin;
1175
1176         pin = kzalloc(sizeof(*pin), GFP_KERNEL);
1177         if (!pin)
1178                 return -ENOMEM;
1179
1180         pin->nid = nid;
1181
1182         list_add_tail(&pin->head, &hdmi->pin_list);
1183         hdmi->num_pin++;
1184
1185         pin->edev = edev;
1186         mutex_init(&pin->lock);
1187         INIT_DELAYED_WORK(&pin->work, hdac_hdmi_repoll_eld);
1188
1189         return 0;
1190 }
1191
1192 #define INTEL_VENDOR_NID 0x08
1193 #define INTEL_GET_VENDOR_VERB 0xf81
1194 #define INTEL_SET_VENDOR_VERB 0x781
1195 #define INTEL_EN_DP12                   0x02 /* enable DP 1.2 features */
1196 #define INTEL_EN_ALL_PIN_CVTS   0x01 /* enable 2nd & 3rd pins and convertors */
1197
1198 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac)
1199 {
1200         unsigned int vendor_param;
1201
1202         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1203                                 INTEL_GET_VENDOR_VERB, 0);
1204         if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1205                 return;
1206
1207         vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1208         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1209                                 INTEL_SET_VENDOR_VERB, vendor_param);
1210         if (vendor_param == -1)
1211                 return;
1212 }
1213
1214 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
1215 {
1216         unsigned int vendor_param;
1217
1218         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1219                                 INTEL_GET_VENDOR_VERB, 0);
1220         if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1221                 return;
1222
1223         /* enable DP1.2 mode */
1224         vendor_param |= INTEL_EN_DP12;
1225         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1226                                 INTEL_SET_VENDOR_VERB, vendor_param);
1227         if (vendor_param == -1)
1228                 return;
1229
1230 }
1231
1232 static struct snd_soc_dai_ops hdmi_dai_ops = {
1233         .startup = hdac_hdmi_pcm_open,
1234         .shutdown = hdac_hdmi_pcm_close,
1235         .hw_params = hdac_hdmi_set_hw_params,
1236         .prepare = hdac_hdmi_playback_prepare,
1237         .trigger = hdac_hdmi_trigger,
1238         .hw_free = hdac_hdmi_playback_cleanup,
1239 };
1240
1241 /*
1242  * Each converter can support a stream independently. So a dai is created
1243  * based on the number of converter queried.
1244  */
1245 static int hdac_hdmi_create_dais(struct hdac_device *hdac,
1246                 struct snd_soc_dai_driver **dais,
1247                 struct hdac_hdmi_priv *hdmi, int num_dais)
1248 {
1249         struct snd_soc_dai_driver *hdmi_dais;
1250         struct hdac_hdmi_cvt *cvt;
1251         char name[NAME_SIZE], dai_name[NAME_SIZE];
1252         int i = 0;
1253         u32 rates, bps;
1254         unsigned int rate_max = 384000, rate_min = 8000;
1255         u64 formats;
1256         int ret;
1257
1258         hdmi_dais = devm_kzalloc(&hdac->dev,
1259                         (sizeof(*hdmi_dais) * num_dais),
1260                         GFP_KERNEL);
1261         if (!hdmi_dais)
1262                 return -ENOMEM;
1263
1264         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1265                 ret = snd_hdac_query_supported_pcm(hdac, cvt->nid,
1266                                         &rates, &formats, &bps);
1267                 if (ret)
1268                         return ret;
1269
1270                 /* Filter out 44.1, 88.2 and 176.4Khz */
1271                 rates &= ~(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_88200 |
1272                            SNDRV_PCM_RATE_176400);
1273                 if (!rates)
1274                         return -EINVAL;
1275
1276                 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1277                 hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
1278                                         dai_name, GFP_KERNEL);
1279
1280                 if (!hdmi_dais[i].name)
1281                         return -ENOMEM;
1282
1283                 snprintf(name, sizeof(name), "hifi%d", i+1);
1284                 hdmi_dais[i].playback.stream_name =
1285                                 devm_kstrdup(&hdac->dev, name, GFP_KERNEL);
1286                 if (!hdmi_dais[i].playback.stream_name)
1287                         return -ENOMEM;
1288
1289                 /*
1290                  * Set caps based on capability queried from the converter.
1291                  * It will be constrained runtime based on ELD queried.
1292                  */
1293                 hdmi_dais[i].playback.formats = formats;
1294                 hdmi_dais[i].playback.rates = rates;
1295                 hdmi_dais[i].playback.rate_max = rate_max;
1296                 hdmi_dais[i].playback.rate_min = rate_min;
1297                 hdmi_dais[i].playback.channels_min = 2;
1298                 hdmi_dais[i].playback.channels_max = 2;
1299                 hdmi_dais[i].ops = &hdmi_dai_ops;
1300
1301                 i++;
1302         }
1303
1304         *dais = hdmi_dais;
1305
1306         return 0;
1307 }
1308
1309 /*
1310  * Parse all nodes and store the cvt/pin nids in array
1311  * Add one time initialization for pin and cvt widgets
1312  */
1313 static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
1314                 struct snd_soc_dai_driver **dais, int *num_dais)
1315 {
1316         hda_nid_t nid;
1317         int i, num_nodes;
1318         struct hdac_device *hdac = &edev->hdac;
1319         struct hdac_hdmi_priv *hdmi = edev->private_data;
1320         int ret;
1321
1322         hdac_hdmi_skl_enable_all_pins(hdac);
1323         hdac_hdmi_skl_enable_dp12(hdac);
1324
1325         num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid);
1326         if (!nid || num_nodes <= 0) {
1327                 dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");
1328                 return -EINVAL;
1329         }
1330
1331         hdac->num_nodes = num_nodes;
1332         hdac->start_nid = nid;
1333
1334         for (i = 0; i < hdac->num_nodes; i++, nid++) {
1335                 unsigned int caps;
1336                 unsigned int type;
1337
1338                 caps = get_wcaps(hdac, nid);
1339                 type = get_wcaps_type(caps);
1340
1341                 if (!(caps & AC_WCAP_DIGITAL))
1342                         continue;
1343
1344                 switch (type) {
1345
1346                 case AC_WID_AUD_OUT:
1347                         ret = hdac_hdmi_add_cvt(edev, nid);
1348                         if (ret < 0)
1349                                 return ret;
1350                         break;
1351
1352                 case AC_WID_PIN:
1353                         ret = hdac_hdmi_add_pin(edev, nid);
1354                         if (ret < 0)
1355                                 return ret;
1356                         break;
1357                 }
1358         }
1359
1360         hdac->end_nid = nid;
1361
1362         if (!hdmi->num_pin || !hdmi->num_cvt)
1363                 return -EIO;
1364
1365         ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
1366         if (ret) {
1367                 dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
1368                                                         ret);
1369                 return ret;
1370         }
1371
1372         *num_dais = hdmi->num_cvt;
1373
1374         return hdac_hdmi_init_dai_map(edev);
1375 }
1376
1377 static void hdac_hdmi_eld_notify_cb(void *aptr, int port)
1378 {
1379         struct hdac_ext_device *edev = aptr;
1380         struct hdac_hdmi_priv *hdmi = edev->private_data;
1381         struct hdac_hdmi_pin *pin;
1382         struct snd_soc_codec *codec = edev->scodec;
1383
1384         /* Don't know how this mapping is derived */
1385         hda_nid_t pin_nid = port + 0x04;
1386
1387         dev_dbg(&edev->hdac.dev, "%s: for pin: %d\n", __func__, pin_nid);
1388
1389         /*
1390          * skip notification during system suspend (but not in runtime PM);
1391          * the state will be updated at resume. Also since the ELD and
1392          * connection states are updated in anyway at the end of the resume,
1393          * we can skip it when received during PM process.
1394          */
1395         if (snd_power_get_state(codec->component.card->snd_card) !=
1396                         SNDRV_CTL_POWER_D0)
1397                 return;
1398
1399         if (atomic_read(&edev->hdac.in_pm))
1400                 return;
1401
1402         list_for_each_entry(pin, &hdmi->pin_list, head) {
1403                 if (pin->nid == pin_nid)
1404                         hdac_hdmi_present_sense(pin, 1);
1405         }
1406 }
1407
1408 static struct i915_audio_component_audio_ops aops = {
1409         .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1410 };
1411
1412 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1413                                                 int device)
1414 {
1415         struct snd_soc_pcm_runtime *rtd;
1416
1417         list_for_each_entry(rtd, &card->rtd_list, list) {
1418                 if (rtd->pcm && (rtd->pcm->device == device))
1419                         return rtd->pcm;
1420         }
1421
1422         return NULL;
1423 }
1424
1425 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device)
1426 {
1427         char jack_name[NAME_SIZE];
1428         struct snd_soc_codec *codec = dai->codec;
1429         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1430         struct snd_soc_dapm_context *dapm =
1431                 snd_soc_component_get_dapm(&codec->component);
1432         struct hdac_hdmi_priv *hdmi = edev->private_data;
1433         struct hdac_hdmi_pcm *pcm;
1434         struct snd_pcm *snd_pcm;
1435         int err;
1436
1437         /*
1438          * this is a new PCM device, create new pcm and
1439          * add to the pcm list
1440          */
1441         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
1442         if (!pcm)
1443                 return -ENOMEM;
1444         pcm->pcm_id = device;
1445         pcm->cvt = hdmi->dai_map[dai->id].cvt;
1446
1447         snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1448         if (snd_pcm) {
1449                 err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1450                 if (err < 0) {
1451                         dev_err(&edev->hdac.dev,
1452                                 "chmap control add failed with err: %d for pcm: %d\n",
1453                                 err, device);
1454                         kfree(pcm);
1455                         return err;
1456                 }
1457         }
1458
1459         list_add_tail(&pcm->head, &hdmi->pcm_list);
1460
1461         sprintf(jack_name, "HDMI/DP, pcm=%d Jack", device);
1462
1463         return snd_jack_new(dapm->card->snd_card, jack_name,
1464                 SND_JACK_AVOUT, &pcm->jack, true, false);
1465 }
1466 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1467
1468 static int hdmi_codec_probe(struct snd_soc_codec *codec)
1469 {
1470         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1471         struct hdac_hdmi_priv *hdmi = edev->private_data;
1472         struct snd_soc_dapm_context *dapm =
1473                 snd_soc_component_get_dapm(&codec->component);
1474         struct hdac_hdmi_pin *pin;
1475         struct hdac_ext_link *hlink = NULL;
1476         int ret;
1477
1478         edev->scodec = codec;
1479
1480         /*
1481          * hold the ref while we probe, also no need to drop the ref on
1482          * exit, we call pm_runtime_suspend() so that will do for us
1483          */
1484         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1485         if (!hlink) {
1486                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1487                 return -EIO;
1488         }
1489
1490         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1491
1492         ret = create_fill_widget_route_map(dapm);
1493         if (ret < 0)
1494                 return ret;
1495
1496         aops.audio_ptr = edev;
1497         ret = snd_hdac_i915_register_notifier(&aops);
1498         if (ret < 0) {
1499                 dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n",
1500                                 ret);
1501                 return ret;
1502         }
1503
1504         list_for_each_entry(pin, &hdmi->pin_list, head)
1505                 hdac_hdmi_present_sense(pin, 1);
1506
1507         /* Imp: Store the card pointer in hda_codec */
1508         edev->card = dapm->card->snd_card;
1509
1510         /*
1511          * hdac_device core already sets the state to active and calls
1512          * get_noresume. So enable runtime and set the device to suspend.
1513          */
1514         pm_runtime_enable(&edev->hdac.dev);
1515         pm_runtime_put(&edev->hdac.dev);
1516         pm_runtime_suspend(&edev->hdac.dev);
1517
1518         return 0;
1519 }
1520
1521 static int hdmi_codec_remove(struct snd_soc_codec *codec)
1522 {
1523         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1524
1525         pm_runtime_disable(&edev->hdac.dev);
1526         return 0;
1527 }
1528
1529 #ifdef CONFIG_PM
1530 static int hdmi_codec_prepare(struct device *dev)
1531 {
1532         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1533         struct hdac_device *hdac = &edev->hdac;
1534
1535         pm_runtime_get_sync(&edev->hdac.dev);
1536
1537         /*
1538          * Power down afg.
1539          * codec_read is preferred over codec_write to set the power state.
1540          * This way verb is send to set the power state and response
1541          * is received. So setting power state is ensured without using loop
1542          * to read the state.
1543          */
1544         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1545                                                         AC_PWRST_D3);
1546
1547         return 0;
1548 }
1549
1550 static void hdmi_codec_complete(struct device *dev)
1551 {
1552         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1553         struct hdac_hdmi_priv *hdmi = edev->private_data;
1554         struct hdac_hdmi_pin *pin;
1555         struct hdac_device *hdac = &edev->hdac;
1556
1557         /* Power up afg */
1558         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1559                                                         AC_PWRST_D0);
1560
1561         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1562         hdac_hdmi_skl_enable_dp12(&edev->hdac);
1563
1564         /*
1565          * As the ELD notify callback request is not entertained while the
1566          * device is in suspend state. Need to manually check detection of
1567          * all pins here.
1568          */
1569         list_for_each_entry(pin, &hdmi->pin_list, head)
1570                 hdac_hdmi_present_sense(pin, 1);
1571
1572         pm_runtime_put_sync(&edev->hdac.dev);
1573 }
1574 #else
1575 #define hdmi_codec_prepare NULL
1576 #define hdmi_codec_complete NULL
1577 #endif
1578
1579 static struct snd_soc_codec_driver hdmi_hda_codec = {
1580         .probe          = hdmi_codec_probe,
1581         .remove         = hdmi_codec_remove,
1582         .idle_bias_off  = true,
1583 };
1584
1585 static void hdac_hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
1586                                         unsigned char *chmap)
1587 {
1588         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1589         struct hdac_hdmi_priv *hdmi = edev->private_data;
1590         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1591         struct hdac_hdmi_pin *pin = pcm->pin;
1592
1593         /* chmap is already set to 0 in caller */
1594         if (!pin)
1595                 return;
1596
1597         memcpy(chmap, pin->chmap, ARRAY_SIZE(pin->chmap));
1598 }
1599
1600 static void hdac_hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
1601                                 unsigned char *chmap, int prepared)
1602 {
1603         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1604         struct hdac_hdmi_priv *hdmi = edev->private_data;
1605         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1606         struct hdac_hdmi_pin *pin = pcm->pin;
1607
1608         mutex_lock(&pin->lock);
1609         pin->chmap_set = true;
1610         memcpy(pin->chmap, chmap, ARRAY_SIZE(pin->chmap));
1611         if (prepared)
1612                 hdac_hdmi_setup_audio_infoframe(edev, pcm->cvt->nid, pin->nid);
1613         mutex_unlock(&pin->lock);
1614 }
1615
1616 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
1617 {
1618         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1619         struct hdac_hdmi_priv *hdmi = edev->private_data;
1620         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1621         struct hdac_hdmi_pin *pin = pcm->pin;
1622
1623         return pin ? true:false;
1624 }
1625
1626 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
1627 {
1628         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1629         struct hdac_hdmi_priv *hdmi = edev->private_data;
1630         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1631         struct hdac_hdmi_pin *pin = pcm->pin;
1632
1633         if (!pin || !pin->eld.eld_valid)
1634                 return 0;
1635
1636         return pin->eld.info.spk_alloc;
1637 }
1638
1639 static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
1640 {
1641         struct hdac_device *codec = &edev->hdac;
1642         struct hdac_hdmi_priv *hdmi_priv;
1643         struct snd_soc_dai_driver *hdmi_dais = NULL;
1644         struct hdac_ext_link *hlink = NULL;
1645         int num_dais = 0;
1646         int ret = 0;
1647
1648         /* hold the ref while we probe */
1649         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1650         if (!hlink) {
1651                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1652                 return -EIO;
1653         }
1654
1655         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1656
1657         hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
1658         if (hdmi_priv == NULL)
1659                 return -ENOMEM;
1660
1661         edev->private_data = hdmi_priv;
1662         snd_hdac_register_chmap_ops(codec, &hdmi_priv->chmap);
1663         hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
1664         hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
1665         hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
1666         hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
1667
1668         dev_set_drvdata(&codec->dev, edev);
1669
1670         INIT_LIST_HEAD(&hdmi_priv->pin_list);
1671         INIT_LIST_HEAD(&hdmi_priv->cvt_list);
1672         INIT_LIST_HEAD(&hdmi_priv->pcm_list);
1673         mutex_init(&hdmi_priv->pin_mutex);
1674
1675         /*
1676          * Turned off in the runtime_suspend during the first explicit
1677          * pm_runtime_suspend call.
1678          */
1679         ret = snd_hdac_display_power(edev->hdac.bus, true);
1680         if (ret < 0) {
1681                 dev_err(&edev->hdac.dev,
1682                         "Cannot turn on display power on i915 err: %d\n",
1683                         ret);
1684                 return ret;
1685         }
1686
1687         ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
1688         if (ret < 0) {
1689                 dev_err(&codec->dev,
1690                         "Failed in parse and map nid with err: %d\n", ret);
1691                 return ret;
1692         }
1693
1694         /* ASoC specific initialization */
1695         ret = snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
1696                                         hdmi_dais, num_dais);
1697
1698         snd_hdac_ext_bus_link_put(edev->ebus, hlink);
1699
1700         return ret;
1701 }
1702
1703 static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
1704 {
1705         struct hdac_hdmi_priv *hdmi = edev->private_data;
1706         struct hdac_hdmi_pin *pin, *pin_next;
1707         struct hdac_hdmi_cvt *cvt, *cvt_next;
1708         struct hdac_hdmi_pcm *pcm, *pcm_next;
1709
1710         snd_soc_unregister_codec(&edev->hdac.dev);
1711
1712         list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
1713                 pcm->cvt = NULL;
1714                 pcm->pin = NULL;
1715                 list_del(&pcm->head);
1716                 kfree(pcm);
1717         }
1718
1719         list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
1720                 list_del(&cvt->head);
1721                 kfree(cvt->name);
1722                 kfree(cvt);
1723         }
1724
1725         list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
1726                 list_del(&pin->head);
1727                 kfree(pin);
1728         }
1729
1730         return 0;
1731 }
1732
1733 #ifdef CONFIG_PM
1734 static int hdac_hdmi_runtime_suspend(struct device *dev)
1735 {
1736         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1737         struct hdac_device *hdac = &edev->hdac;
1738         struct hdac_bus *bus = hdac->bus;
1739         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
1740         struct hdac_ext_link *hlink = NULL;
1741         int err;
1742
1743         dev_dbg(dev, "Enter: %s\n", __func__);
1744
1745         /* controller may not have been initialized for the first time */
1746         if (!bus)
1747                 return 0;
1748
1749         /*
1750          * Power down afg.
1751          * codec_read is preferred over codec_write to set the power state.
1752          * This way verb is send to set the power state and response
1753          * is received. So setting power state is ensured without using loop
1754          * to read the state.
1755          */
1756         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1757                                                         AC_PWRST_D3);
1758         err = snd_hdac_display_power(bus, false);
1759         if (err < 0) {
1760                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
1761                 return err;
1762         }
1763
1764         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
1765         if (!hlink) {
1766                 dev_err(dev, "hdac link not found\n");
1767                 return -EIO;
1768         }
1769
1770         snd_hdac_ext_bus_link_put(ebus, hlink);
1771
1772         return 0;
1773 }
1774
1775 static int hdac_hdmi_runtime_resume(struct device *dev)
1776 {
1777         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1778         struct hdac_device *hdac = &edev->hdac;
1779         struct hdac_bus *bus = hdac->bus;
1780         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
1781         struct hdac_ext_link *hlink = NULL;
1782         int err;
1783
1784         dev_dbg(dev, "Enter: %s\n", __func__);
1785
1786         /* controller may not have been initialized for the first time */
1787         if (!bus)
1788                 return 0;
1789
1790         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
1791         if (!hlink) {
1792                 dev_err(dev, "hdac link not found\n");
1793                 return -EIO;
1794         }
1795
1796         snd_hdac_ext_bus_link_get(ebus, hlink);
1797
1798         err = snd_hdac_display_power(bus, true);
1799         if (err < 0) {
1800                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
1801                 return err;
1802         }
1803
1804         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1805         hdac_hdmi_skl_enable_dp12(&edev->hdac);
1806
1807         /* Power up afg */
1808         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1809                                                         AC_PWRST_D0);
1810
1811         return 0;
1812 }
1813 #else
1814 #define hdac_hdmi_runtime_suspend NULL
1815 #define hdac_hdmi_runtime_resume NULL
1816 #endif
1817
1818 static const struct dev_pm_ops hdac_hdmi_pm = {
1819         SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
1820         .prepare = hdmi_codec_prepare,
1821         .complete = hdmi_codec_complete,
1822 };
1823
1824 static const struct hda_device_id hdmi_list[] = {
1825         HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
1826         HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
1827         HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
1828         {}
1829 };
1830
1831 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
1832
1833 static struct hdac_ext_driver hdmi_driver = {
1834         . hdac = {
1835                 .driver = {
1836                         .name   = "HDMI HDA Codec",
1837                         .pm = &hdac_hdmi_pm,
1838                 },
1839                 .id_table       = hdmi_list,
1840         },
1841         .probe          = hdac_hdmi_dev_probe,
1842         .remove         = hdac_hdmi_dev_remove,
1843 };
1844
1845 static int __init hdmi_init(void)
1846 {
1847         return snd_hda_ext_driver_register(&hdmi_driver);
1848 }
1849
1850 static void __exit hdmi_exit(void)
1851 {
1852         snd_hda_ext_driver_unregister(&hdmi_driver);
1853 }
1854
1855 module_init(hdmi_init);
1856 module_exit(hdmi_exit);
1857
1858 MODULE_LICENSE("GPL v2");
1859 MODULE_DESCRIPTION("HDMI HD codec");
1860 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
1861 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");