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