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 #define HDA_MAX_PORTS           3
  46
  47 #define ELD_MAX_SIZE    256
  48 #define ELD_FIXED_BYTES 20
  49
  50 #define ELD_VER_CEA_861D 2
  51 #define ELD_VER_PARTIAL 31
  52 #define ELD_MAX_MNL     16
  53
  54 struct hdac_hdmi_cvt_params {
  55         unsigned int channels_min;
  56         unsigned int channels_max;
  57         u32 rates;
  58         u64 formats;
  59         unsigned int maxbps;
  60 };
  61
  62 struct hdac_hdmi_cvt {
  63         struct list_head head;
  64         hda_nid_t nid;
  65         const char *name;
  66         struct hdac_hdmi_cvt_params params;
  67 };
  68
  69 /* Currently only spk_alloc, more to be added */
  70 struct hdac_hdmi_parsed_eld {
  71         u8 spk_alloc;
  72 };
  73
  74 struct hdac_hdmi_eld {
  75         bool    monitor_present;
  76         bool    eld_valid;
  77         int     eld_size;
  78         char    eld_buffer[ELD_MAX_SIZE];
  79         struct  hdac_hdmi_parsed_eld info;
  80 };
  81
  82 struct hdac_hdmi_pin {
  83         struct list_head head;
  84         hda_nid_t nid;
  85         bool mst_capable;
  86         struct hdac_hdmi_port *ports;
  87         int num_ports;
  88         struct hdac_device *hdev;
  89 };
  90
  91 struct hdac_hdmi_port {
  92         struct list_head head;
  93         int id;
  94         struct hdac_hdmi_pin *pin;
  95         int num_mux_nids;
  96         hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
  97         struct hdac_hdmi_eld eld;
  98         const char *jack_pin;
  99         struct snd_soc_dapm_context *dapm;
 100         const char *output_pin;
 101 };
 102
 103 struct hdac_hdmi_pcm {
 104         struct list_head head;
 105         int pcm_id;
 106         struct list_head port_list;
 107         struct hdac_hdmi_cvt *cvt;
 108         struct snd_soc_jack *jack;
 109         int stream_tag;
 110         int channels;
 111         int format;
 112         bool chmap_set;
 113         unsigned char chmap[8]; /* ALSA API channel-map */
 114         struct mutex lock;
 115         int jack_event;
 116 };
 117
 118 struct hdac_hdmi_dai_port_map {
 119         int dai_id;
 120         struct hdac_hdmi_port *port;
 121         struct hdac_hdmi_cvt *cvt;
 122 };
 123
 124 struct hdac_hdmi_drv_data {
 125         unsigned int vendor_nid;
 126 };
 127
 128 struct hdac_hdmi_priv {
 129         struct hdac_device *hdev;
 130         struct snd_soc_component *component;
 131         struct snd_card *card;
 132         struct hdac_hdmi_dai_port_map dai_map[HDA_MAX_CVTS];
 133         struct list_head pin_list;
 134         struct list_head cvt_list;
 135         struct list_head pcm_list;
 136         int num_pin;
 137         int num_cvt;
 138         int num_ports;
 139         struct mutex pin_mutex;
 140         struct hdac_chmap chmap;
 141         struct hdac_hdmi_drv_data *drv_data;
 142         struct snd_soc_dai_driver *dai_drv;
 143 };
 144
 145 #define hdev_to_hdmi_priv(_hdev) dev_get_drvdata(&(_hdev)->dev)
 146
 147 static struct hdac_hdmi_pcm *
 148 hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi,
 149                            struct hdac_hdmi_cvt *cvt)
 150 {
 151         struct hdac_hdmi_pcm *pcm = NULL;
 152
 153         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 154                 if (pcm->cvt == cvt)
 155                         break;
 156         }
 157
 158         return pcm;
 159 }
 160
 161 static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm,
 162                 struct hdac_hdmi_port *port, bool is_connect)
 163 {
 164         struct hdac_device *hdev = port->pin->hdev;
 165
 166         if (is_connect)
 167                 snd_soc_dapm_enable_pin(port->dapm, port->jack_pin);
 168         else
 169                 snd_soc_dapm_disable_pin(port->dapm, port->jack_pin);
 170
 171         if (is_connect) {
 172                 /*
 173                  * Report Jack connect event when a device is connected
 174                  * for the first time where same PCM is attached to multiple
 175                  * ports.
 176                  */
 177                 if (pcm->jack_event == 0) {
 178                         dev_dbg(&hdev->dev,
 179                                         "jack report for pcm=%d\n",
 180                                         pcm->pcm_id);
 181                         snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT,
 182                                                 SND_JACK_AVOUT);
 183                 }
 184                 pcm->jack_event++;
 185         } else {
 186                 /*
 187                  * Report Jack disconnect event when a device is disconnected
 188                  * is the only last connected device when same PCM is attached
 189                  * to multiple ports.
 190                  */
 191                 if (pcm->jack_event == 1)
 192                         snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT);
 193                 if (pcm->jack_event > 0)
 194                         pcm->jack_event--;
 195         }
 196
 197         snd_soc_dapm_sync(port->dapm);
 198 }
 199
 200 /* MST supported verbs */
 201 /*
 202  * Get the no devices that can be connected to a port on the Pin widget.
 203  */
 204 static int hdac_hdmi_get_port_len(struct hdac_device *hdev, hda_nid_t nid)
 205 {
 206         unsigned int caps;
 207         unsigned int type, param;
 208
 209         caps = get_wcaps(hdev, nid);
 210         type = get_wcaps_type(caps);
 211
 212         if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN))
 213                 return 0;
 214
 215         param = snd_hdac_read_parm_uncached(hdev, nid, AC_PAR_DEVLIST_LEN);
 216         if (param == -1)
 217                 return param;
 218
 219         return param & AC_DEV_LIST_LEN_MASK;
 220 }
 221
 222 /*
 223  * Get the port entry select on the pin. Return the port entry
 224  * id selected on the pin. Return 0 means the first port entry
 225  * is selected or MST is not supported.
 226  */
 227 static int hdac_hdmi_port_select_get(struct hdac_device *hdev,
 228                                         struct hdac_hdmi_port *port)
 229 {
 230         return snd_hdac_codec_read(hdev, port->pin->nid,
 231                                 0, AC_VERB_GET_DEVICE_SEL, 0);
 232 }
 233
 234 /*
 235  * Sets the selected port entry for the configuring Pin widget verb.
 236  * returns error if port set is not equal to port get otherwise success
 237  */
 238 static int hdac_hdmi_port_select_set(struct hdac_device *hdev,
 239                                         struct hdac_hdmi_port *port)
 240 {
 241         int num_ports;
 242
 243         if (!port->pin->mst_capable)
 244                 return 0;
 245
 246         /* AC_PAR_DEVLIST_LEN is 0 based. */
 247         num_ports = hdac_hdmi_get_port_len(hdev, port->pin->nid);
 248         if (num_ports < 0)
 249                 return -EIO;
 250         /*
 251          * Device List Length is a 0 based integer value indicating the
 252          * number of sink device that a MST Pin Widget can support.
 253          */
 254         if (num_ports + 1  < port->id)
 255                 return 0;
 256
 257         snd_hdac_codec_write(hdev, port->pin->nid, 0,
 258                         AC_VERB_SET_DEVICE_SEL, port->id);
 259
 260         if (port->id != hdac_hdmi_port_select_get(hdev, port))
 261                 return -EIO;
 262
 263         dev_dbg(&hdev->dev, "Selected the port=%d\n", port->id);
 264
 265         return 0;
 266 }
 267
 268 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
 269                                                 int pcm_idx)
 270 {
 271         struct hdac_hdmi_pcm *pcm;
 272
 273         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 274                 if (pcm->pcm_id == pcm_idx)
 275                         return pcm;
 276         }
 277
 278         return NULL;
 279 }
 280
 281 static unsigned int sad_format(const u8 *sad)
 282 {
 283         return ((sad[0] >> 0x3) & 0x1f);
 284 }
 285
 286 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
 287 {
 288         return (sad[2] & 7);
 289 }
 290
 291 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
 292                                                 void *eld)
 293 {
 294         u64 formats = SNDRV_PCM_FMTBIT_S16;
 295         int i;
 296         const u8 *sad, *eld_buf = eld;
 297
 298         sad = drm_eld_sad(eld_buf);
 299         if (!sad)
 300                 goto format_constraint;
 301
 302         for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
 303                 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
 304
 305                         /*
 306                          * the controller support 20 and 24 bits in 32 bit
 307                          * container so we set S32
 308                          */
 309                         if (sad_sample_bits_lpcm(sad) & 0x6)
 310                                 formats |= SNDRV_PCM_FMTBIT_S32;
 311                 }
 312         }
 313
 314 format_constraint:
 315         return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
 316                                 formats);
 317
 318 }
 319
 320 static void
 321 hdac_hdmi_set_dip_index(struct hdac_device *hdev, hda_nid_t pin_nid,
 322                                 int packet_index, int byte_index)
 323 {
 324         int val;
 325
 326         val = (packet_index << 5) | (byte_index & 0x1f);
 327         snd_hdac_codec_write(hdev, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
 328 }
 329
 330 struct dp_audio_infoframe {
 331         u8 type; /* 0x84 */
 332         u8 len;  /* 0x1b */
 333         u8 ver;  /* 0x11 << 2 */
 334
 335         u8 CC02_CT47;   /* match with HDMI infoframe from this on */
 336         u8 SS01_SF24;
 337         u8 CXT04;
 338         u8 CA;
 339         u8 LFEPBL01_LSV36_DM_INH7;
 340 };
 341
 342 static int hdac_hdmi_setup_audio_infoframe(struct hdac_device *hdev,
 343                    struct hdac_hdmi_pcm *pcm, struct hdac_hdmi_port *port)
 344 {
 345         uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
 346         struct hdmi_audio_infoframe frame;
 347         struct hdac_hdmi_pin *pin = port->pin;
 348         struct dp_audio_infoframe dp_ai;
 349         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
 350         struct hdac_hdmi_cvt *cvt = pcm->cvt;
 351         u8 *dip;
 352         int ret;
 353         int i;
 354         const u8 *eld_buf;
 355         u8 conn_type;
 356         int channels, ca;
 357
 358         ca = snd_hdac_channel_allocation(hdev, port->eld.info.spk_alloc,
 359                         pcm->channels, pcm->chmap_set, true, pcm->chmap);
 360
 361         channels = snd_hdac_get_active_channels(ca);
 362         hdmi->chmap.ops.set_channel_count(hdev, cvt->nid, channels);
 363
 364         snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
 365                                 pcm->channels, pcm->chmap, pcm->chmap_set);
 366
 367         eld_buf = port->eld.eld_buffer;
 368         conn_type = drm_eld_get_conn_type(eld_buf);
 369
 370         switch (conn_type) {
 371         case DRM_ELD_CONN_TYPE_HDMI:
 372                 hdmi_audio_infoframe_init(&frame);
 373
 374                 frame.channels = channels;
 375                 frame.channel_allocation = ca;
 376
 377                 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
 378                 if (ret < 0)
 379                         return ret;
 380
 381                 break;
 382
 383         case DRM_ELD_CONN_TYPE_DP:
 384                 memset(&dp_ai, 0, sizeof(dp_ai));
 385                 dp_ai.type      = 0x84;
 386                 dp_ai.len       = 0x1b;
 387                 dp_ai.ver       = 0x11 << 2;
 388                 dp_ai.CC02_CT47 = channels - 1;
 389                 dp_ai.CA        = ca;
 390
 391                 dip = (u8 *)&dp_ai;
 392                 break;
 393
 394         default:
 395                 dev_err(&hdev->dev, "Invalid connection type: %d\n", conn_type);
 396                 return -EIO;
 397         }
 398
 399         /* stop infoframe transmission */
 400         hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
 401         snd_hdac_codec_write(hdev, pin->nid, 0,
 402                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
 403
 404
 405         /*  Fill infoframe. Index auto-incremented */
 406         hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
 407         if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
 408                 for (i = 0; i < sizeof(buffer); i++)
 409                         snd_hdac_codec_write(hdev, pin->nid, 0,
 410                                 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
 411         } else {
 412                 for (i = 0; i < sizeof(dp_ai); i++)
 413                         snd_hdac_codec_write(hdev, pin->nid, 0,
 414                                 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
 415         }
 416
 417         /* Start infoframe */
 418         hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
 419         snd_hdac_codec_write(hdev, pin->nid, 0,
 420                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
 421
 422         return 0;
 423 }
 424
 425 static int hdac_hdmi_set_tdm_slot(struct snd_soc_dai *dai,
 426                 unsigned int tx_mask, unsigned int rx_mask,
 427                 int slots, int slot_width)
 428 {
 429         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
 430         struct hdac_device *hdev = hdmi->hdev;
 431         struct hdac_hdmi_dai_port_map *dai_map;
 432         struct hdac_hdmi_pcm *pcm;
 433
 434         dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, tx_mask);
 435
 436         dai_map = &hdmi->dai_map[dai->id];
 437
 438         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
 439
 440         if (pcm)
 441                 pcm->stream_tag = (tx_mask << 4);
 442
 443         return 0;
 444 }
 445
 446 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
 447         struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
 448 {
 449         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
 450         struct hdac_device *hdev = hdmi->hdev;
 451         struct hdac_hdmi_dai_port_map *dai_map;
 452         struct hdac_hdmi_port *port;
 453         struct hdac_hdmi_pcm *pcm;
 454         int format;
 455
 456         dai_map = &hdmi->dai_map[dai->id];
 457         port = dai_map->port;
 458
 459         if (!port)
 460                 return -ENODEV;
 461
 462         if ((!port->eld.monitor_present) || (!port->eld.eld_valid)) {
 463                 dev_err(&hdev->dev,
 464                         "device is not configured for this pin:port%d:%d\n",
 465                                         port->pin->nid, port->id);
 466                 return -ENODEV;
 467         }
 468
 469         format = snd_hdac_calc_stream_format(params_rate(hparams),
 470                         params_channels(hparams), params_format(hparams),
 471                         dai->driver->playback.sig_bits, 0);
 472
 473         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
 474         if (!pcm)
 475                 return -EIO;
 476
 477         pcm->format = format;
 478         pcm->channels = params_channels(hparams);
 479
 480         return 0;
 481 }
 482
 483 static int hdac_hdmi_query_port_connlist(struct hdac_device *hdev,
 484                                         struct hdac_hdmi_pin *pin,
 485                                         struct hdac_hdmi_port *port)
 486 {
 487         if (!(get_wcaps(hdev, pin->nid) & AC_WCAP_CONN_LIST)) {
 488                 dev_warn(&hdev->dev,
 489                         "HDMI: pin %d wcaps %#x does not support connection list\n",
 490                         pin->nid, get_wcaps(hdev, pin->nid));
 491                 return -EINVAL;
 492         }
 493
 494         if (hdac_hdmi_port_select_set(hdev, port) < 0)
 495                 return -EIO;
 496
 497         port->num_mux_nids = snd_hdac_get_connections(hdev, pin->nid,
 498                         port->mux_nids, HDA_MAX_CONNECTIONS);
 499         if (port->num_mux_nids == 0)
 500                 dev_warn(&hdev->dev,
 501                         "No connections found for pin:port %d:%d\n",
 502                                                 pin->nid, port->id);
 503
 504         dev_dbg(&hdev->dev, "num_mux_nids %d for pin:port %d:%d\n",
 505                         port->num_mux_nids, pin->nid, port->id);
 506
 507         return port->num_mux_nids;
 508 }
 509
 510 /*
 511  * Query pcm list and return port to which stream is routed.
 512  *
 513  * Also query connection list of the pin, to validate the cvt to port map.
 514  *
 515  * Same stream rendering to multiple ports simultaneously can be done
 516  * possibly, but not supported for now in driver. So return the first port
 517  * connected.
 518  */
 519 static struct hdac_hdmi_port *hdac_hdmi_get_port_from_cvt(
 520                         struct hdac_device *hdev,
 521                         struct hdac_hdmi_priv *hdmi,
 522                         struct hdac_hdmi_cvt *cvt)
 523 {
 524         struct hdac_hdmi_pcm *pcm;
 525         struct hdac_hdmi_port *port = NULL;
 526         int ret, i;
 527
 528         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 529                 if (pcm->cvt == cvt) {
 530                         if (list_empty(&pcm->port_list))
 531                                 continue;
 532
 533                         list_for_each_entry(port, &pcm->port_list, head) {
 534                                 mutex_lock(&pcm->lock);
 535                                 ret = hdac_hdmi_query_port_connlist(hdev,
 536                                                         port->pin, port);
 537                                 mutex_unlock(&pcm->lock);
 538                                 if (ret < 0)
 539                                         continue;
 540
 541                                 for (i = 0; i < port->num_mux_nids; i++) {
 542                                         if (port->mux_nids[i] == cvt->nid &&
 543                                                 port->eld.monitor_present &&
 544                                                 port->eld.eld_valid)
 545                                                 return port;
 546                                 }
 547                         }
 548                 }
 549         }
 550
 551         return NULL;
 552 }
 553
 554 /*
 555  * This tries to get a valid pin and set the HW constraints based on the
 556  * ELD. Even if a valid pin is not found return success so that device open
 557  * doesn't fail.
 558  */
 559 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
 560                         struct snd_soc_dai *dai)
 561 {
 562         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
 563         struct hdac_device *hdev = hdmi->hdev;
 564         struct hdac_hdmi_dai_port_map *dai_map;
 565         struct hdac_hdmi_cvt *cvt;
 566         struct hdac_hdmi_port *port;
 567         int ret;
 568
 569         dai_map = &hdmi->dai_map[dai->id];
 570
 571         cvt = dai_map->cvt;
 572         port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt);
 573
 574         /*
 575          * To make PA and other userland happy.
 576          * userland scans devices so returning error does not help.
 577          */
 578         if (!port)
 579                 return 0;
 580         if ((!port->eld.monitor_present) ||
 581                         (!port->eld.eld_valid)) {
 582
 583                 dev_warn(&hdev->dev,
 584                         "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n",
 585                         port->eld.monitor_present, port->eld.eld_valid,
 586                         port->pin->nid, port->id);
 587
 588                 return 0;
 589         }
 590
 591         dai_map->port = port;
 592
 593         ret = hdac_hdmi_eld_limit_formats(substream->runtime,
 594                                 port->eld.eld_buffer);
 595         if (ret < 0)
 596                 return ret;
 597
 598         return snd_pcm_hw_constraint_eld(substream->runtime,
 599                                 port->eld.eld_buffer);
 600 }
 601
 602 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
 603                 struct snd_soc_dai *dai)
 604 {
 605         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
 606         struct hdac_hdmi_dai_port_map *dai_map;
 607         struct hdac_hdmi_pcm *pcm;
 608
 609         dai_map = &hdmi->dai_map[dai->id];
 610
 611         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
 612
 613         if (pcm) {
 614                 mutex_lock(&pcm->lock);
 615                 pcm->chmap_set = false;
 616                 memset(pcm->chmap, 0, sizeof(pcm->chmap));
 617                 pcm->channels = 0;
 618                 mutex_unlock(&pcm->lock);
 619         }
 620
 621         if (dai_map->port)
 622                 dai_map->port = NULL;
 623 }
 624
 625 static int
 626 hdac_hdmi_query_cvt_params(struct hdac_device *hdev, struct hdac_hdmi_cvt *cvt)
 627 {
 628         unsigned int chans;
 629         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
 630         int err;
 631
 632         chans = get_wcaps(hdev, cvt->nid);
 633         chans = get_wcaps_channels(chans);
 634
 635         cvt->params.channels_min = 2;
 636
 637         cvt->params.channels_max = chans;
 638         if (chans > hdmi->chmap.channels_max)
 639                 hdmi->chmap.channels_max = chans;
 640
 641         err = snd_hdac_query_supported_pcm(hdev, cvt->nid,
 642                         &cvt->params.rates,
 643                         &cvt->params.formats,
 644                         &cvt->params.maxbps);
 645         if (err < 0)
 646                 dev_err(&hdev->dev,
 647                         "Failed to query pcm params for nid %d: %d\n",
 648                         cvt->nid, err);
 649
 650         return err;
 651 }
 652
 653 static int hdac_hdmi_fill_widget_info(struct device *dev,
 654                 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id,
 655                 void *priv, const char *wname, const char *stream,
 656                 struct snd_kcontrol_new *wc, int numkc,
 657                 int (*event)(struct snd_soc_dapm_widget *,
 658                 struct snd_kcontrol *, int), unsigned short event_flags)
 659 {
 660         w->id = id;
 661         w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
 662         if (!w->name)
 663                 return -ENOMEM;
 664
 665         w->sname = stream;
 666         w->reg = SND_SOC_NOPM;
 667         w->shift = 0;
 668         w->kcontrol_news = wc;
 669         w->num_kcontrols = numkc;
 670         w->priv = priv;
 671         w->event = event;
 672         w->event_flags = event_flags;
 673
 674         return 0;
 675 }
 676
 677 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
 678                 const char *sink, const char *control, const char *src,
 679                 int (*handler)(struct snd_soc_dapm_widget *src,
 680                         struct snd_soc_dapm_widget *sink))
 681 {
 682         route->sink = sink;
 683         route->source = src;
 684         route->control = control;
 685         route->connected = handler;
 686 }
 687
 688 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_device *hdev,
 689                                         struct hdac_hdmi_port *port)
 690 {
 691         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
 692         struct hdac_hdmi_pcm *pcm = NULL;
 693         struct hdac_hdmi_port *p;
 694
 695         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 696                 if (list_empty(&pcm->port_list))
 697                         continue;
 698
 699                 list_for_each_entry(p, &pcm->port_list, head) {
 700                         if (p->id == port->id && port->pin == p->pin)
 701                                 return pcm;
 702                 }
 703         }
 704
 705         return NULL;
 706 }
 707
 708 static void hdac_hdmi_set_power_state(struct hdac_device *hdev,
 709                              hda_nid_t nid, unsigned int pwr_state)
 710 {
 711         int count;
 712         unsigned int state;
 713
 714         if (get_wcaps(hdev, nid) & AC_WCAP_POWER) {
 715                 if (!snd_hdac_check_power_state(hdev, nid, pwr_state)) {
 716                         for (count = 0; count < 10; count++) {
 717                                 snd_hdac_codec_read(hdev, nid, 0,
 718                                                 AC_VERB_SET_POWER_STATE,
 719                                                 pwr_state);
 720                                 state = snd_hdac_sync_power_state(hdev,
 721                                                 nid, pwr_state);
 722                                 if (!(state & AC_PWRST_ERROR))
 723                                         break;
 724                         }
 725                 }
 726         }
 727 }
 728
 729 static void hdac_hdmi_set_amp(struct hdac_device *hdev,
 730                                    hda_nid_t nid, int val)
 731 {
 732         if (get_wcaps(hdev, nid) & AC_WCAP_OUT_AMP)
 733                 snd_hdac_codec_write(hdev, nid, 0,
 734                                         AC_VERB_SET_AMP_GAIN_MUTE, val);
 735 }
 736
 737
 738 static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w,
 739                                         struct snd_kcontrol *kc, int event)
 740 {
 741         struct hdac_hdmi_port *port = w->priv;
 742         struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
 743         struct hdac_hdmi_pcm *pcm;
 744
 745         dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
 746                         __func__, w->name, event);
 747
 748         pcm = hdac_hdmi_get_pcm(hdev, port);
 749         if (!pcm)
 750                 return -EIO;
 751
 752         /* set the device if pin is mst_capable */
 753         if (hdac_hdmi_port_select_set(hdev, port) < 0)
 754                 return -EIO;
 755
 756         switch (event) {
 757         case SND_SOC_DAPM_PRE_PMU:
 758                 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D0);
 759
 760                 /* Enable out path for this pin widget */
 761                 snd_hdac_codec_write(hdev, port->pin->nid, 0,
 762                                 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
 763
 764                 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_UNMUTE);
 765
 766                 return hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
 767
 768         case SND_SOC_DAPM_POST_PMD:
 769                 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_MUTE);
 770
 771                 /* Disable out path for this pin widget */
 772                 snd_hdac_codec_write(hdev, port->pin->nid, 0,
 773                                 AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
 774
 775                 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D3);
 776                 break;
 777
 778         }
 779
 780         return 0;
 781 }
 782
 783 static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w,
 784                                         struct snd_kcontrol *kc, int event)
 785 {
 786         struct hdac_hdmi_cvt *cvt = w->priv;
 787         struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
 788         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
 789         struct hdac_hdmi_pcm *pcm;
 790
 791         dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
 792                         __func__, w->name, event);
 793
 794         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt);
 795         if (!pcm)
 796                 return -EIO;
 797
 798         switch (event) {
 799         case SND_SOC_DAPM_PRE_PMU:
 800                 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D0);
 801
 802                 /* Enable transmission */
 803                 snd_hdac_codec_write(hdev, cvt->nid, 0,
 804                         AC_VERB_SET_DIGI_CONVERT_1, 1);
 805
 806                 /* Category Code (CC) to zero */
 807                 snd_hdac_codec_write(hdev, cvt->nid, 0,
 808                         AC_VERB_SET_DIGI_CONVERT_2, 0);
 809
 810                 snd_hdac_codec_write(hdev, cvt->nid, 0,
 811                                 AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag);
 812                 snd_hdac_codec_write(hdev, cvt->nid, 0,
 813                                 AC_VERB_SET_STREAM_FORMAT, pcm->format);
 814                 break;
 815
 816         case SND_SOC_DAPM_POST_PMD:
 817                 snd_hdac_codec_write(hdev, cvt->nid, 0,
 818                                 AC_VERB_SET_CHANNEL_STREAMID, 0);
 819                 snd_hdac_codec_write(hdev, cvt->nid, 0,
 820                                 AC_VERB_SET_STREAM_FORMAT, 0);
 821
 822                 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D3);
 823                 break;
 824
 825         }
 826
 827         return 0;
 828 }
 829
 830 static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w,
 831                                         struct snd_kcontrol *kc, int event)
 832 {
 833         struct hdac_hdmi_port *port = w->priv;
 834         struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
 835         int mux_idx;
 836
 837         dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
 838                         __func__, w->name, event);
 839
 840         if (!kc)
 841                 kc  = w->kcontrols[0];
 842
 843         mux_idx = dapm_kcontrol_get_value(kc);
 844
 845         /* set the device if pin is mst_capable */
 846         if (hdac_hdmi_port_select_set(hdev, port) < 0)
 847                 return -EIO;
 848
 849         if (mux_idx > 0) {
 850                 snd_hdac_codec_write(hdev, port->pin->nid, 0,
 851                         AC_VERB_SET_CONNECT_SEL, (mux_idx - 1));
 852         }
 853
 854         return 0;
 855 }
 856
 857 /*
 858  * Based on user selection, map the PINs with the PCMs.
 859  */
 860 static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol,
 861                 struct snd_ctl_elem_value *ucontrol)
 862 {
 863         int ret;
 864         struct hdac_hdmi_port *p, *p_next;
 865         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 866         struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
 867         struct snd_soc_dapm_context *dapm = w->dapm;
 868         struct hdac_hdmi_port *port = w->priv;
 869         struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
 870         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
 871         struct hdac_hdmi_pcm *pcm = NULL;
 872         const char *cvt_name =  e->texts[ucontrol->value.enumerated.item[0]];
 873
 874         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
 875         if (ret < 0)
 876                 return ret;
 877
 878         if (port == NULL)
 879                 return -EINVAL;
 880
 881         mutex_lock(&hdmi->pin_mutex);
 882         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 883                 if (list_empty(&pcm->port_list))
 884                         continue;
 885
 886                 list_for_each_entry_safe(p, p_next, &pcm->port_list, head) {
 887                         if (p == port && p->id == port->id &&
 888                                         p->pin == port->pin) {
 889                                 hdac_hdmi_jack_report(pcm, port, false);
 890                                 list_del(&p->head);
 891                         }
 892                 }
 893         }
 894
 895         /*
 896          * Jack status is not reported during device probe as the
 897          * PCMs are not registered by then. So report it here.
 898          */
 899         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 900                 if (!strcmp(cvt_name, pcm->cvt->name)) {
 901                         list_add_tail(&port->head, &pcm->port_list);
 902                         if (port->eld.monitor_present && port->eld.eld_valid) {
 903                                 hdac_hdmi_jack_report(pcm, port, true);
 904                                 mutex_unlock(&hdmi->pin_mutex);
 905                                 return ret;
 906                         }
 907                 }
 908         }
 909         mutex_unlock(&hdmi->pin_mutex);
 910
 911         return ret;
 912 }
 913
 914 /*
 915  * Ideally the Mux inputs should be based on the num_muxs enumerated, but
 916  * the display driver seem to be programming the connection list for the pin
 917  * widget runtime.
 918  *
 919  * So programming all the possible inputs for the mux, the user has to take
 920  * care of selecting the right one and leaving all other inputs selected to
 921  * "NONE"
 922  */
 923 static int hdac_hdmi_create_pin_port_muxs(struct hdac_device *hdev,
 924                                 struct hdac_hdmi_port *port,
 925                                 struct snd_soc_dapm_widget *widget,
 926                                 const char *widget_name)
 927 {
 928         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
 929         struct hdac_hdmi_pin *pin = port->pin;
 930         struct snd_kcontrol_new *kc;
 931         struct hdac_hdmi_cvt *cvt;
 932         struct soc_enum *se;
 933         char kc_name[NAME_SIZE];
 934         char mux_items[NAME_SIZE];
 935         /* To hold inputs to the Pin mux */
 936         char *items[HDA_MAX_CONNECTIONS];
 937         int i = 0;
 938         int num_items = hdmi->num_cvt + 1;
 939
 940         kc = devm_kzalloc(&hdev->dev, sizeof(*kc), GFP_KERNEL);
 941         if (!kc)
 942                 return -ENOMEM;
 943
 944         se = devm_kzalloc(&hdev->dev, sizeof(*se), GFP_KERNEL);
 945         if (!se)
 946                 return -ENOMEM;
 947
 948         snprintf(kc_name, NAME_SIZE, "Pin %d port %d Input",
 949                                                 pin->nid, port->id);
 950         kc->name = devm_kstrdup(&hdev->dev, kc_name, GFP_KERNEL);
 951         if (!kc->name)
 952                 return -ENOMEM;
 953
 954         kc->private_value = (long)se;
 955         kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 956         kc->access = 0;
 957         kc->info = snd_soc_info_enum_double;
 958         kc->put = hdac_hdmi_set_pin_port_mux;
 959         kc->get = snd_soc_dapm_get_enum_double;
 960
 961         se->reg = SND_SOC_NOPM;
 962
 963         /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
 964         se->items = num_items;
 965         se->mask = roundup_pow_of_two(se->items) - 1;
 966
 967         sprintf(mux_items, "NONE");
 968         items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
 969         if (!items[i])
 970                 return -ENOMEM;
 971
 972         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 973                 i++;
 974                 sprintf(mux_items, "cvt %d", cvt->nid);
 975                 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
 976                 if (!items[i])
 977                         return -ENOMEM;
 978         }
 979
 980         se->texts = devm_kmemdup(&hdev->dev, items,
 981                         (num_items  * sizeof(char *)), GFP_KERNEL);
 982         if (!se->texts)
 983                 return -ENOMEM;
 984
 985         return hdac_hdmi_fill_widget_info(&hdev->dev, widget,
 986                         snd_soc_dapm_mux, port, widget_name, NULL, kc, 1,
 987                         hdac_hdmi_pin_mux_widget_event,
 988                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG);
 989 }
 990
 991 /* Add cvt <- input <- mux route map */
 992 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_device *hdev,
 993                         struct snd_soc_dapm_widget *widgets,
 994                         struct snd_soc_dapm_route *route, int rindex)
 995 {
 996         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
 997         const struct snd_kcontrol_new *kc;
 998         struct soc_enum *se;
 999         int mux_index = hdmi->num_cvt + hdmi->num_ports;
1000         int i, j;
1001
1002         for (i = 0; i < hdmi->num_ports; i++) {
1003                 kc = widgets[mux_index].kcontrol_news;
1004                 se = (struct soc_enum *)kc->private_value;
1005                 for (j = 0; j < hdmi->num_cvt; j++) {
1006                         hdac_hdmi_fill_route(&route[rindex],
1007                                         widgets[mux_index].name,
1008                                         se->texts[j + 1],
1009                                         widgets[j].name, NULL);
1010
1011                         rindex++;
1012                 }
1013
1014                 mux_index++;
1015         }
1016 }
1017
1018 /*
1019  * Widgets are added in the below sequence
1020  *      Converter widgets for num converters enumerated
1021  *      Pin-port widgets for num ports for Pins enumerated
1022  *      Pin-port mux widgets to represent connenction list of pin widget
1023  *
1024  * For each port, one Mux and One output widget is added
1025  * Total widgets elements = num_cvt + (num_ports * 2);
1026  *
1027  * Routes are added as below:
1028  *      pin-port mux -> pin (based on num_ports)
1029  *      cvt -> "Input sel control" -> pin-port_mux
1030  *
1031  * Total route elements:
1032  *      num_ports + (pin_muxes * num_cvt)
1033  */
1034 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
1035 {
1036         struct snd_soc_dapm_widget *widgets;
1037         struct snd_soc_dapm_route *route;
1038         struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
1039         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1040         struct snd_soc_dai_driver *dai_drv = hdmi->dai_drv;
1041         char widget_name[NAME_SIZE];
1042         struct hdac_hdmi_cvt *cvt;
1043         struct hdac_hdmi_pin *pin;
1044         int ret, i = 0, num_routes = 0, j;
1045
1046         if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
1047                 return -EINVAL;
1048
1049         widgets = devm_kzalloc(dapm->dev, (sizeof(*widgets) *
1050                                 ((2 * hdmi->num_ports) + hdmi->num_cvt)),
1051                                 GFP_KERNEL);
1052
1053         if (!widgets)
1054                 return -ENOMEM;
1055
1056         /* DAPM widgets to represent each converter widget */
1057         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1058                 sprintf(widget_name, "Converter %d", cvt->nid);
1059                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1060                         snd_soc_dapm_aif_in, cvt,
1061                         widget_name, dai_drv[i].playback.stream_name, NULL, 0,
1062                         hdac_hdmi_cvt_output_widget_event,
1063                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
1064                 if (ret < 0)
1065                         return ret;
1066                 i++;
1067         }
1068
1069         list_for_each_entry(pin, &hdmi->pin_list, head) {
1070                 for (j = 0; j < pin->num_ports; j++) {
1071                         sprintf(widget_name, "hif%d-%d Output",
1072                                 pin->nid, pin->ports[j].id);
1073                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1074                                         snd_soc_dapm_output, &pin->ports[j],
1075                                         widget_name, NULL, NULL, 0,
1076                                         hdac_hdmi_pin_output_widget_event,
1077                                         SND_SOC_DAPM_PRE_PMU |
1078                                         SND_SOC_DAPM_POST_PMD);
1079                         if (ret < 0)
1080                                 return ret;
1081                         pin->ports[j].output_pin = widgets[i].name;
1082                         i++;
1083                 }
1084         }
1085
1086         /* DAPM widgets to represent the connection list to pin widget */
1087         list_for_each_entry(pin, &hdmi->pin_list, head) {
1088                 for (j = 0; j < pin->num_ports; j++) {
1089                         sprintf(widget_name, "Pin%d-Port%d Mux",
1090                                 pin->nid, pin->ports[j].id);
1091                         ret = hdac_hdmi_create_pin_port_muxs(hdev,
1092                                                 &pin->ports[j], &widgets[i],
1093                                                 widget_name);
1094                         if (ret < 0)
1095                                 return ret;
1096                         i++;
1097
1098                         /* For cvt to pin_mux mapping */
1099                         num_routes += hdmi->num_cvt;
1100
1101                         /* For pin_mux to pin mapping */
1102                         num_routes++;
1103                 }
1104         }
1105
1106         route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
1107                                                         GFP_KERNEL);
1108         if (!route)
1109                 return -ENOMEM;
1110
1111         i = 0;
1112         /* Add pin <- NULL <- mux route map */
1113         list_for_each_entry(pin, &hdmi->pin_list, head) {
1114                 for (j = 0; j < pin->num_ports; j++) {
1115                         int sink_index = i + hdmi->num_cvt;
1116                         int src_index = sink_index + pin->num_ports *
1117                                                 hdmi->num_pin;
1118
1119                         hdac_hdmi_fill_route(&route[i],
1120                                 widgets[sink_index].name, NULL,
1121                                 widgets[src_index].name, NULL);
1122                         i++;
1123                 }
1124         }
1125
1126         hdac_hdmi_add_pinmux_cvt_route(hdev, widgets, route, i);
1127
1128         snd_soc_dapm_new_controls(dapm, widgets,
1129                 ((2 * hdmi->num_ports) + hdmi->num_cvt));
1130
1131         snd_soc_dapm_add_routes(dapm, route, num_routes);
1132         snd_soc_dapm_new_widgets(dapm->card);
1133
1134         return 0;
1135
1136 }
1137
1138 static int hdac_hdmi_init_dai_map(struct hdac_device *hdev)
1139 {
1140         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1141         struct hdac_hdmi_dai_port_map *dai_map;
1142         struct hdac_hdmi_cvt *cvt;
1143         int dai_id = 0;
1144
1145         if (list_empty(&hdmi->cvt_list))
1146                 return -EINVAL;
1147
1148         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1149                 dai_map = &hdmi->dai_map[dai_id];
1150                 dai_map->dai_id = dai_id;
1151                 dai_map->cvt = cvt;
1152
1153                 dai_id++;
1154
1155                 if (dai_id == HDA_MAX_CVTS) {
1156                         dev_warn(&hdev->dev,
1157                                 "Max dais supported: %d\n", dai_id);
1158                         break;
1159                 }
1160         }
1161
1162         return 0;
1163 }
1164
1165 static int hdac_hdmi_add_cvt(struct hdac_device *hdev, hda_nid_t nid)
1166 {
1167         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1168         struct hdac_hdmi_cvt *cvt;
1169         char name[NAME_SIZE];
1170
1171         cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
1172         if (!cvt)
1173                 return -ENOMEM;
1174
1175         cvt->nid = nid;
1176         sprintf(name, "cvt %d", cvt->nid);
1177         cvt->name = kstrdup(name, GFP_KERNEL);
1178
1179         list_add_tail(&cvt->head, &hdmi->cvt_list);
1180         hdmi->num_cvt++;
1181
1182         return hdac_hdmi_query_cvt_params(hdev, cvt);
1183 }
1184
1185 static int hdac_hdmi_parse_eld(struct hdac_device *hdev,
1186                         struct hdac_hdmi_port *port)
1187 {
1188         unsigned int ver, mnl;
1189
1190         ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
1191                                                 >> DRM_ELD_VER_SHIFT;
1192
1193         if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
1194                 dev_err(&hdev->dev, "HDMI: Unknown ELD version %d\n", ver);
1195                 return -EINVAL;
1196         }
1197
1198         mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
1199                 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
1200
1201         if (mnl > ELD_MAX_MNL) {
1202                 dev_err(&hdev->dev, "HDMI: MNL Invalid %d\n", mnl);
1203                 return -EINVAL;
1204         }
1205
1206         port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER];
1207
1208         return 0;
1209 }
1210
1211 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin,
1212                                     struct hdac_hdmi_port *port)
1213 {
1214         struct hdac_device *hdev = pin->hdev;
1215         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1216         struct hdac_hdmi_pcm *pcm;
1217         int size = 0;
1218         int port_id = -1;
1219
1220         if (!hdmi)
1221                 return;
1222
1223         /*
1224          * In case of non MST pin, get_eld info API expectes port
1225          * to be -1.
1226          */
1227         mutex_lock(&hdmi->pin_mutex);
1228         port->eld.monitor_present = false;
1229
1230         if (pin->mst_capable)
1231                 port_id = port->id;
1232
1233         size = snd_hdac_acomp_get_eld(hdev, pin->nid, port_id,
1234                                 &port->eld.monitor_present,
1235                                 port->eld.eld_buffer,
1236                                 ELD_MAX_SIZE);
1237
1238         if (size > 0) {
1239                 size = min(size, ELD_MAX_SIZE);
1240                 if (hdac_hdmi_parse_eld(hdev, port) < 0)
1241                         size = -EINVAL;
1242         }
1243
1244         if (size > 0) {
1245                 port->eld.eld_valid = true;
1246                 port->eld.eld_size = size;
1247         } else {
1248                 port->eld.eld_valid = false;
1249                 port->eld.eld_size = 0;
1250         }
1251
1252         pcm = hdac_hdmi_get_pcm(hdev, port);
1253
1254         if (!port->eld.monitor_present || !port->eld.eld_valid) {
1255
1256                 dev_err(&hdev->dev, "%s: disconnect for pin:port %d:%d\n",
1257                                                 __func__, pin->nid, port->id);
1258
1259                 /*
1260                  * PCMs are not registered during device probe, so don't
1261                  * report jack here. It will be done in usermode mux
1262                  * control select.
1263                  */
1264                 if (pcm)
1265                         hdac_hdmi_jack_report(pcm, port, false);
1266
1267                 mutex_unlock(&hdmi->pin_mutex);
1268                 return;
1269         }
1270
1271         if (port->eld.monitor_present && port->eld.eld_valid) {
1272                 if (pcm)
1273                         hdac_hdmi_jack_report(pcm, port, true);
1274
1275                 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
1276                           port->eld.eld_buffer, port->eld.eld_size, false);
1277
1278         }
1279         mutex_unlock(&hdmi->pin_mutex);
1280 }
1281
1282 static int hdac_hdmi_add_ports(struct hdac_hdmi_priv *hdmi,
1283                                 struct hdac_hdmi_pin *pin)
1284 {
1285         struct hdac_hdmi_port *ports;
1286         int max_ports = HDA_MAX_PORTS;
1287         int i;
1288
1289         /*
1290          * FIXME: max_port may vary for each platform, so pass this as
1291          * as driver data or query from i915 interface when this API is
1292          * implemented.
1293          */
1294
1295         ports = kcalloc(max_ports, sizeof(*ports), GFP_KERNEL);
1296         if (!ports)
1297                 return -ENOMEM;
1298
1299         for (i = 0; i < max_ports; i++) {
1300                 ports[i].id = i;
1301                 ports[i].pin = pin;
1302         }
1303         pin->ports = ports;
1304         pin->num_ports = max_ports;
1305         return 0;
1306 }
1307
1308 static int hdac_hdmi_add_pin(struct hdac_device *hdev, hda_nid_t nid)
1309 {
1310         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1311         struct hdac_hdmi_pin *pin;
1312         int ret;
1313
1314         pin = kzalloc(sizeof(*pin), GFP_KERNEL);
1315         if (!pin)
1316                 return -ENOMEM;
1317
1318         pin->nid = nid;
1319         pin->mst_capable = false;
1320         pin->hdev = hdev;
1321         ret = hdac_hdmi_add_ports(hdmi, pin);
1322         if (ret < 0)
1323                 return ret;
1324
1325         list_add_tail(&pin->head, &hdmi->pin_list);
1326         hdmi->num_pin++;
1327         hdmi->num_ports += pin->num_ports;
1328
1329         return 0;
1330 }
1331
1332 #define INTEL_VENDOR_NID 0x08
1333 #define INTEL_GLK_VENDOR_NID 0x0b
1334 #define INTEL_GET_VENDOR_VERB 0xf81
1335 #define INTEL_SET_VENDOR_VERB 0x781
1336 #define INTEL_EN_DP12                   0x02 /* enable DP 1.2 features */
1337 #define INTEL_EN_ALL_PIN_CVTS   0x01 /* enable 2nd & 3rd pins and convertors */
1338
1339 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdev)
1340 {
1341         unsigned int vendor_param;
1342         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1343         unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1344
1345         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1346                                 INTEL_GET_VENDOR_VERB, 0);
1347         if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1348                 return;
1349
1350         vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1351         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1352                                 INTEL_SET_VENDOR_VERB, vendor_param);
1353         if (vendor_param == -1)
1354                 return;
1355 }
1356
1357 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdev)
1358 {
1359         unsigned int vendor_param;
1360         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1361         unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1362
1363         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1364                                 INTEL_GET_VENDOR_VERB, 0);
1365         if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1366                 return;
1367
1368         /* enable DP1.2 mode */
1369         vendor_param |= INTEL_EN_DP12;
1370         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1371                                 INTEL_SET_VENDOR_VERB, vendor_param);
1372         if (vendor_param == -1)
1373                 return;
1374
1375 }
1376
1377 static const struct snd_soc_dai_ops hdmi_dai_ops = {
1378         .startup = hdac_hdmi_pcm_open,
1379         .shutdown = hdac_hdmi_pcm_close,
1380         .hw_params = hdac_hdmi_set_hw_params,
1381         .set_tdm_slot = hdac_hdmi_set_tdm_slot,
1382 };
1383
1384 /*
1385  * Each converter can support a stream independently. So a dai is created
1386  * based on the number of converter queried.
1387  */
1388 static int hdac_hdmi_create_dais(struct hdac_device *hdev,
1389                 struct snd_soc_dai_driver **dais,
1390                 struct hdac_hdmi_priv *hdmi, int num_dais)
1391 {
1392         struct snd_soc_dai_driver *hdmi_dais;
1393         struct hdac_hdmi_cvt *cvt;
1394         char name[NAME_SIZE], dai_name[NAME_SIZE];
1395         int i = 0;
1396         u32 rates, bps;
1397         unsigned int rate_max = 384000, rate_min = 8000;
1398         u64 formats;
1399         int ret;
1400
1401         hdmi_dais = devm_kzalloc(&hdev->dev,
1402                         (sizeof(*hdmi_dais) * num_dais),
1403                         GFP_KERNEL);
1404         if (!hdmi_dais)
1405                 return -ENOMEM;
1406
1407         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1408                 ret = snd_hdac_query_supported_pcm(hdev, cvt->nid,
1409                                         &rates, &formats, &bps);
1410                 if (ret)
1411                         return ret;
1412
1413                 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1414                 hdmi_dais[i].name = devm_kstrdup(&hdev->dev,
1415                                         dai_name, GFP_KERNEL);
1416
1417                 if (!hdmi_dais[i].name)
1418                         return -ENOMEM;
1419
1420                 snprintf(name, sizeof(name), "hifi%d", i+1);
1421                 hdmi_dais[i].playback.stream_name =
1422                                 devm_kstrdup(&hdev->dev, name, GFP_KERNEL);
1423                 if (!hdmi_dais[i].playback.stream_name)
1424                         return -ENOMEM;
1425
1426                 /*
1427                  * Set caps based on capability queried from the converter.
1428                  * It will be constrained runtime based on ELD queried.
1429                  */
1430                 hdmi_dais[i].playback.formats = formats;
1431                 hdmi_dais[i].playback.rates = rates;
1432                 hdmi_dais[i].playback.rate_max = rate_max;
1433                 hdmi_dais[i].playback.rate_min = rate_min;
1434                 hdmi_dais[i].playback.channels_min = 2;
1435                 hdmi_dais[i].playback.channels_max = 2;
1436                 hdmi_dais[i].playback.sig_bits = bps;
1437                 hdmi_dais[i].ops = &hdmi_dai_ops;
1438                 i++;
1439         }
1440
1441         *dais = hdmi_dais;
1442         hdmi->dai_drv = hdmi_dais;
1443
1444         return 0;
1445 }
1446
1447 /*
1448  * Parse all nodes and store the cvt/pin nids in array
1449  * Add one time initialization for pin and cvt widgets
1450  */
1451 static int hdac_hdmi_parse_and_map_nid(struct hdac_device *hdev,
1452                 struct snd_soc_dai_driver **dais, int *num_dais)
1453 {
1454         hda_nid_t nid;
1455         int i, num_nodes;
1456         struct hdac_hdmi_cvt *temp_cvt, *cvt_next;
1457         struct hdac_hdmi_pin *temp_pin, *pin_next;
1458         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1459         int ret;
1460
1461         hdac_hdmi_skl_enable_all_pins(hdev);
1462         hdac_hdmi_skl_enable_dp12(hdev);
1463
1464         num_nodes = snd_hdac_get_sub_nodes(hdev, hdev->afg, &nid);
1465         if (!nid || num_nodes <= 0) {
1466                 dev_warn(&hdev->dev, "HDMI: failed to get afg sub nodes\n");
1467                 return -EINVAL;
1468         }
1469
1470         for (i = 0; i < num_nodes; i++, nid++) {
1471                 unsigned int caps;
1472                 unsigned int type;
1473
1474                 caps = get_wcaps(hdev, nid);
1475                 type = get_wcaps_type(caps);
1476
1477                 if (!(caps & AC_WCAP_DIGITAL))
1478                         continue;
1479
1480                 switch (type) {
1481
1482                 case AC_WID_AUD_OUT:
1483                         ret = hdac_hdmi_add_cvt(hdev, nid);
1484                         if (ret < 0)
1485                                 goto free_widgets;
1486                         break;
1487
1488                 case AC_WID_PIN:
1489                         ret = hdac_hdmi_add_pin(hdev, nid);
1490                         if (ret < 0)
1491                                 goto free_widgets;
1492                         break;
1493                 }
1494         }
1495
1496         if (!hdmi->num_pin || !hdmi->num_cvt) {
1497                 ret = -EIO;
1498                 goto free_widgets;
1499         }
1500
1501         ret = hdac_hdmi_create_dais(hdev, dais, hdmi, hdmi->num_cvt);
1502         if (ret) {
1503                 dev_err(&hdev->dev, "Failed to create dais with err: %d\n",
1504                                                         ret);
1505                 goto free_widgets;
1506         }
1507
1508         *num_dais = hdmi->num_cvt;
1509         ret = hdac_hdmi_init_dai_map(hdev);
1510         if (ret < 0)
1511                 goto free_widgets;
1512
1513         return ret;
1514
1515 free_widgets:
1516         list_for_each_entry_safe(temp_cvt, cvt_next, &hdmi->cvt_list, head) {
1517                 list_del(&temp_cvt->head);
1518                 kfree(temp_cvt->name);
1519                 kfree(temp_cvt);
1520         }
1521
1522         list_for_each_entry_safe(temp_pin, pin_next, &hdmi->pin_list, head) {
1523                 for (i = 0; i < temp_pin->num_ports; i++)
1524                         temp_pin->ports[i].pin = NULL;
1525                 kfree(temp_pin->ports);
1526                 list_del(&temp_pin->head);
1527                 kfree(temp_pin);
1528         }
1529
1530         return ret;
1531 }
1532
1533 static int hdac_hdmi_pin2port(void *aptr, int pin)
1534 {
1535         return pin - 4; /* map NID 0x05 -> port #1 */
1536 }
1537
1538 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
1539 {
1540         struct hdac_device *hdev = aptr;
1541         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1542         struct hdac_hdmi_pin *pin = NULL;
1543         struct hdac_hdmi_port *hport = NULL;
1544         struct snd_soc_component *component = hdmi->component;
1545         int i;
1546
1547         /* Don't know how this mapping is derived */
1548         hda_nid_t pin_nid = port + 0x04;
1549
1550         dev_dbg(&hdev->dev, "%s: for pin:%d port=%d\n", __func__,
1551                                                         pin_nid, pipe);
1552
1553         /*
1554          * skip notification during system suspend (but not in runtime PM);
1555          * the state will be updated at resume. Also since the ELD and
1556          * connection states are updated in anyway at the end of the resume,
1557          * we can skip it when received during PM process.
1558          */
1559         if (snd_power_get_state(component->card->snd_card) !=
1560                         SNDRV_CTL_POWER_D0)
1561                 return;
1562
1563         if (atomic_read(&hdev->in_pm))
1564                 return;
1565
1566         list_for_each_entry(pin, &hdmi->pin_list, head) {
1567                 if (pin->nid != pin_nid)
1568                         continue;
1569
1570                 /* In case of non MST pin, pipe is -1 */
1571                 if (pipe == -1) {
1572                         pin->mst_capable = false;
1573                         /* if not MST, default is port[0] */
1574                         hport = &pin->ports[0];
1575                 } else {
1576                         for (i = 0; i < pin->num_ports; i++) {
1577                                 pin->mst_capable = true;
1578                                 if (pin->ports[i].id == pipe) {
1579                                         hport = &pin->ports[i];
1580                                         break;
1581                                 }
1582                         }
1583                 }
1584
1585                 if (hport)
1586                         hdac_hdmi_present_sense(pin, hport);
1587         }
1588
1589 }
1590
1591 static struct drm_audio_component_audio_ops aops = {
1592         .pin2port       = hdac_hdmi_pin2port,
1593         .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1594 };
1595
1596 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1597                                                 int device)
1598 {
1599         struct snd_soc_pcm_runtime *rtd;
1600
1601         list_for_each_entry(rtd, &card->rtd_list, list) {
1602                 if (rtd->pcm && (rtd->pcm->device == device))
1603                         return rtd->pcm;
1604         }
1605
1606         return NULL;
1607 }
1608
1609 /* create jack pin kcontrols */
1610 static int create_fill_jack_kcontrols(struct snd_soc_card *card,
1611                                     struct hdac_device *hdev)
1612 {
1613         struct hdac_hdmi_pin *pin;
1614         struct snd_kcontrol_new *kc;
1615         char kc_name[NAME_SIZE], xname[NAME_SIZE];
1616         char *name;
1617         int i = 0, j;
1618         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1619         struct snd_soc_component *component = hdmi->component;
1620
1621         kc = devm_kcalloc(component->dev, hdmi->num_ports,
1622                                 sizeof(*kc), GFP_KERNEL);
1623
1624         if (!kc)
1625                 return -ENOMEM;
1626
1627         list_for_each_entry(pin, &hdmi->pin_list, head) {
1628                 for (j = 0; j < pin->num_ports; j++) {
1629                         snprintf(xname, sizeof(xname), "hif%d-%d Jack",
1630                                                 pin->nid, pin->ports[j].id);
1631                         name = devm_kstrdup(component->dev, xname, GFP_KERNEL);
1632                         if (!name)
1633                                 return -ENOMEM;
1634                         snprintf(kc_name, sizeof(kc_name), "%s Switch", xname);
1635                         kc[i].name = devm_kstrdup(component->dev, kc_name,
1636                                                         GFP_KERNEL);
1637                         if (!kc[i].name)
1638                                 return -ENOMEM;
1639
1640                         kc[i].private_value = (unsigned long)name;
1641                         kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1642                         kc[i].access = 0;
1643                         kc[i].info = snd_soc_dapm_info_pin_switch;
1644                         kc[i].put = snd_soc_dapm_put_pin_switch;
1645                         kc[i].get = snd_soc_dapm_get_pin_switch;
1646                         i++;
1647                 }
1648         }
1649
1650         return snd_soc_add_card_controls(card, kc, i);
1651 }
1652
1653 int hdac_hdmi_jack_port_init(struct snd_soc_component *component,
1654                         struct snd_soc_dapm_context *dapm)
1655 {
1656         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1657         struct hdac_device *hdev = hdmi->hdev;
1658         struct hdac_hdmi_pin *pin;
1659         struct snd_soc_dapm_widget *widgets;
1660         struct snd_soc_dapm_route *route;
1661         char w_name[NAME_SIZE];
1662         int i = 0, j, ret;
1663
1664         widgets = devm_kcalloc(dapm->dev, hdmi->num_ports,
1665                                 sizeof(*widgets), GFP_KERNEL);
1666
1667         if (!widgets)
1668                 return -ENOMEM;
1669
1670         route = devm_kcalloc(dapm->dev, hdmi->num_ports,
1671                                 sizeof(*route), GFP_KERNEL);
1672         if (!route)
1673                 return -ENOMEM;
1674
1675         /* create Jack DAPM widget */
1676         list_for_each_entry(pin, &hdmi->pin_list, head) {
1677                 for (j = 0; j < pin->num_ports; j++) {
1678                         snprintf(w_name, sizeof(w_name), "hif%d-%d Jack",
1679                                                 pin->nid, pin->ports[j].id);
1680
1681                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1682                                         snd_soc_dapm_spk, NULL,
1683                                         w_name, NULL, NULL, 0, NULL, 0);
1684                         if (ret < 0)
1685                                 return ret;
1686
1687                         pin->ports[j].jack_pin = widgets[i].name;
1688                         pin->ports[j].dapm = dapm;
1689
1690                         /* add to route from Jack widget to output */
1691                         hdac_hdmi_fill_route(&route[i], pin->ports[j].jack_pin,
1692                                         NULL, pin->ports[j].output_pin, NULL);
1693
1694                         i++;
1695                 }
1696         }
1697
1698         /* Add Route from Jack widget to the output widget */
1699         ret = snd_soc_dapm_new_controls(dapm, widgets, hdmi->num_ports);
1700         if (ret < 0)
1701                 return ret;
1702
1703         ret = snd_soc_dapm_add_routes(dapm, route, hdmi->num_ports);
1704         if (ret < 0)
1705                 return ret;
1706
1707         ret = snd_soc_dapm_new_widgets(dapm->card);
1708         if (ret < 0)
1709                 return ret;
1710
1711         /* Add Jack Pin switch Kcontrol */
1712         ret = create_fill_jack_kcontrols(dapm->card, hdev);
1713
1714         if (ret < 0)
1715                 return ret;
1716
1717         /* default set the Jack Pin switch to OFF */
1718         list_for_each_entry(pin, &hdmi->pin_list, head) {
1719                 for (j = 0; j < pin->num_ports; j++)
1720                         snd_soc_dapm_disable_pin(pin->ports[j].dapm,
1721                                                 pin->ports[j].jack_pin);
1722         }
1723
1724         return 0;
1725 }
1726 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_port_init);
1727
1728 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device,
1729                                 struct snd_soc_jack *jack)
1730 {
1731         struct snd_soc_component *component = dai->component;
1732         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1733         struct hdac_device *hdev = hdmi->hdev;
1734         struct hdac_hdmi_pcm *pcm;
1735         struct snd_pcm *snd_pcm;
1736         int err;
1737
1738         /*
1739          * this is a new PCM device, create new pcm and
1740          * add to the pcm list
1741          */
1742         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
1743         if (!pcm)
1744                 return -ENOMEM;
1745         pcm->pcm_id = device;
1746         pcm->cvt = hdmi->dai_map[dai->id].cvt;
1747         pcm->jack_event = 0;
1748         pcm->jack = jack;
1749         mutex_init(&pcm->lock);
1750         INIT_LIST_HEAD(&pcm->port_list);
1751         snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1752         if (snd_pcm) {
1753                 err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1754                 if (err < 0) {
1755                         dev_err(&hdev->dev,
1756                                 "chmap control add failed with err: %d for pcm: %d\n",
1757                                 err, device);
1758                         kfree(pcm);
1759                         return err;
1760                 }
1761         }
1762
1763         list_add_tail(&pcm->head, &hdmi->pcm_list);
1764
1765         return 0;
1766 }
1767 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1768
1769 static void hdac_hdmi_present_sense_all_pins(struct hdac_device *hdev,
1770                         struct hdac_hdmi_priv *hdmi, bool detect_pin_caps)
1771 {
1772         int i;
1773         struct hdac_hdmi_pin *pin;
1774
1775         list_for_each_entry(pin, &hdmi->pin_list, head) {
1776                 if (detect_pin_caps) {
1777
1778                         if (hdac_hdmi_get_port_len(hdev, pin->nid)  == 0)
1779                                 pin->mst_capable = false;
1780                         else
1781                                 pin->mst_capable = true;
1782                 }
1783
1784                 for (i = 0; i < pin->num_ports; i++) {
1785                         if (!pin->mst_capable && i > 0)
1786                                 continue;
1787
1788                         hdac_hdmi_present_sense(pin, &pin->ports[i]);
1789                 }
1790         }
1791 }
1792
1793 static int hdmi_codec_probe(struct snd_soc_component *component)
1794 {
1795         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1796         struct hdac_device *hdev = hdmi->hdev;
1797         struct snd_soc_dapm_context *dapm =
1798                 snd_soc_component_get_dapm(component);
1799         struct hdac_ext_link *hlink = NULL;
1800         int ret;
1801
1802         hdmi->component = component;
1803
1804         /*
1805          * hold the ref while we probe, also no need to drop the ref on
1806          * exit, we call pm_runtime_suspend() so that will do for us
1807          */
1808         hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
1809         if (!hlink) {
1810                 dev_err(&hdev->dev, "hdac link not found\n");
1811                 return -EIO;
1812         }
1813
1814         snd_hdac_ext_bus_link_get(hdev->bus, hlink);
1815
1816         ret = create_fill_widget_route_map(dapm);
1817         if (ret < 0)
1818                 return ret;
1819
1820         aops.audio_ptr = hdev;
1821         ret = snd_hdac_acomp_register_notifier(hdev->bus, &aops);
1822         if (ret < 0) {
1823                 dev_err(&hdev->dev, "notifier register failed: err: %d\n", ret);
1824                 return ret;
1825         }
1826
1827         hdac_hdmi_present_sense_all_pins(hdev, hdmi, true);
1828         /* Imp: Store the card pointer in hda_codec */
1829         hdmi->card = dapm->card->snd_card;
1830
1831         /*
1832          * Setup a device_link between card device and HDMI codec device.
1833          * The card device is the consumer and the HDMI codec device is
1834          * the supplier. With this setting, we can make sure that the audio
1835          * domain in display power will be always turned on before operating
1836          * on the HDMI audio codec registers.
1837          * Let's use the flag DL_FLAG_AUTOREMOVE_CONSUMER. This can make
1838          * sure the device link is freed when the machine driver is removed.
1839          */
1840         device_link_add(component->card->dev, &hdev->dev, DL_FLAG_RPM_ACTIVE |
1841                         DL_FLAG_AUTOREMOVE_CONSUMER);
1842         /*
1843          * hdac_device core already sets the state to active and calls
1844          * get_noresume. So enable runtime and set the device to suspend.
1845          */
1846         pm_runtime_enable(&hdev->dev);
1847         pm_runtime_put(&hdev->dev);
1848         pm_runtime_suspend(&hdev->dev);
1849
1850         return 0;
1851 }
1852
1853 static void hdmi_codec_remove(struct snd_soc_component *component)
1854 {
1855         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1856         struct hdac_device *hdev = hdmi->hdev;
1857
1858         pm_runtime_disable(&hdev->dev);
1859 }
1860
1861 #ifdef CONFIG_PM
1862 static int hdmi_codec_prepare(struct device *dev)
1863 {
1864         struct hdac_device *hdev = dev_to_hdac_dev(dev);
1865
1866         pm_runtime_get_sync(&hdev->dev);
1867
1868         /*
1869          * Power down afg.
1870          * codec_read is preferred over codec_write to set the power state.
1871          * This way verb is send to set the power state and response
1872          * is received. So setting power state is ensured without using loop
1873          * to read the state.
1874          */
1875         snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
1876                                                         AC_PWRST_D3);
1877
1878         return 0;
1879 }
1880
1881 static void hdmi_codec_complete(struct device *dev)
1882 {
1883         struct hdac_device *hdev = dev_to_hdac_dev(dev);
1884         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1885
1886         /* Power up afg */
1887         snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
1888                                                         AC_PWRST_D0);
1889
1890         hdac_hdmi_skl_enable_all_pins(hdev);
1891         hdac_hdmi_skl_enable_dp12(hdev);
1892
1893         /*
1894          * As the ELD notify callback request is not entertained while the
1895          * device is in suspend state. Need to manually check detection of
1896          * all pins here. pin capablity change is not support, so use the
1897          * already set pin caps.
1898          */
1899         hdac_hdmi_present_sense_all_pins(hdev, hdmi, false);
1900
1901         pm_runtime_put_sync(&hdev->dev);
1902 }
1903 #else
1904 #define hdmi_codec_prepare NULL
1905 #define hdmi_codec_complete NULL
1906 #endif
1907
1908 static const struct snd_soc_component_driver hdmi_hda_codec = {
1909         .probe                  = hdmi_codec_probe,
1910         .remove                 = hdmi_codec_remove,
1911         .use_pmdown_time        = 1,
1912         .endianness             = 1,
1913         .non_legacy_dai_naming  = 1,
1914 };
1915
1916 static void hdac_hdmi_get_chmap(struct hdac_device *hdev, int pcm_idx,
1917                                         unsigned char *chmap)
1918 {
1919         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1920         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1921
1922         memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap));
1923 }
1924
1925 static void hdac_hdmi_set_chmap(struct hdac_device *hdev, int pcm_idx,
1926                                 unsigned char *chmap, int prepared)
1927 {
1928         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1929         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1930         struct hdac_hdmi_port *port;
1931
1932         if (!pcm)
1933                 return;
1934
1935         if (list_empty(&pcm->port_list))
1936                 return;
1937
1938         mutex_lock(&pcm->lock);
1939         pcm->chmap_set = true;
1940         memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap));
1941         list_for_each_entry(port, &pcm->port_list, head)
1942                 if (prepared)
1943                         hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
1944         mutex_unlock(&pcm->lock);
1945 }
1946
1947 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdev, int pcm_idx)
1948 {
1949         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1950         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1951
1952         if (!pcm)
1953                 return false;
1954
1955         if (list_empty(&pcm->port_list))
1956                 return false;
1957
1958         return true;
1959 }
1960
1961 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdev, int pcm_idx)
1962 {
1963         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1964         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1965         struct hdac_hdmi_port *port;
1966
1967         if (!pcm)
1968                 return 0;
1969
1970         if (list_empty(&pcm->port_list))
1971                 return 0;
1972
1973         port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head);
1974
1975         if (!port)
1976                 return 0;
1977
1978         if (!port || !port->eld.eld_valid)
1979                 return 0;
1980
1981         return port->eld.info.spk_alloc;
1982 }
1983
1984 static struct hdac_hdmi_drv_data intel_glk_drv_data  = {
1985         .vendor_nid = INTEL_GLK_VENDOR_NID,
1986 };
1987
1988 static struct hdac_hdmi_drv_data intel_drv_data  = {
1989         .vendor_nid = INTEL_VENDOR_NID,
1990 };
1991
1992 static int hdac_hdmi_dev_probe(struct hdac_device *hdev)
1993 {
1994         struct hdac_hdmi_priv *hdmi_priv = NULL;
1995         struct snd_soc_dai_driver *hdmi_dais = NULL;
1996         struct hdac_ext_link *hlink = NULL;
1997         int num_dais = 0;
1998         int ret = 0;
1999         struct hdac_driver *hdrv = drv_to_hdac_driver(hdev->dev.driver);
2000         const struct hda_device_id *hdac_id = hdac_get_device_id(hdev, hdrv);
2001
2002         /* hold the ref while we probe */
2003         hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
2004         if (!hlink) {
2005                 dev_err(&hdev->dev, "hdac link not found\n");
2006                 return -EIO;
2007         }
2008
2009         snd_hdac_ext_bus_link_get(hdev->bus, hlink);
2010
2011         hdmi_priv = devm_kzalloc(&hdev->dev, sizeof(*hdmi_priv), GFP_KERNEL);
2012         if (hdmi_priv == NULL)
2013                 return -ENOMEM;
2014
2015         snd_hdac_register_chmap_ops(hdev, &hdmi_priv->chmap);
2016         hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
2017         hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
2018         hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
2019         hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
2020         hdmi_priv->hdev = hdev;
2021
2022         if (!hdac_id)
2023                 return -ENODEV;
2024
2025         if (hdac_id->driver_data)
2026                 hdmi_priv->drv_data =
2027                         (struct hdac_hdmi_drv_data *)hdac_id->driver_data;
2028         else
2029                 hdmi_priv->drv_data = &intel_drv_data;
2030
2031         dev_set_drvdata(&hdev->dev, hdmi_priv);
2032
2033         INIT_LIST_HEAD(&hdmi_priv->pin_list);
2034         INIT_LIST_HEAD(&hdmi_priv->cvt_list);
2035         INIT_LIST_HEAD(&hdmi_priv->pcm_list);
2036         mutex_init(&hdmi_priv->pin_mutex);
2037
2038         /*
2039          * Turned off in the runtime_suspend during the first explicit
2040          * pm_runtime_suspend call.
2041          */
2042         ret = snd_hdac_display_power(hdev->bus, true);
2043         if (ret < 0) {
2044                 dev_err(&hdev->dev,
2045                         "Cannot turn on display power on i915 err: %d\n",
2046                         ret);
2047                 return ret;
2048         }
2049
2050         ret = hdac_hdmi_parse_and_map_nid(hdev, &hdmi_dais, &num_dais);
2051         if (ret < 0) {
2052                 dev_err(&hdev->dev,
2053                         "Failed in parse and map nid with err: %d\n", ret);
2054                 return ret;
2055         }
2056         snd_hdac_refresh_widgets(hdev, true);
2057
2058         /* ASoC specific initialization */
2059         ret = devm_snd_soc_register_component(&hdev->dev, &hdmi_hda_codec,
2060                                         hdmi_dais, num_dais);
2061
2062         snd_hdac_ext_bus_link_put(hdev->bus, hlink);
2063
2064         return ret;
2065 }
2066
2067 static int hdac_hdmi_dev_remove(struct hdac_device *hdev)
2068 {
2069         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2070         struct hdac_hdmi_pin *pin, *pin_next;
2071         struct hdac_hdmi_cvt *cvt, *cvt_next;
2072         struct hdac_hdmi_pcm *pcm, *pcm_next;
2073         struct hdac_hdmi_port *port, *port_next;
2074         int i;
2075
2076         list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
2077                 pcm->cvt = NULL;
2078                 if (list_empty(&pcm->port_list))
2079                         continue;
2080
2081                 list_for_each_entry_safe(port, port_next,
2082                                         &pcm->port_list, head)
2083                         list_del(&port->head);
2084
2085                 list_del(&pcm->head);
2086                 kfree(pcm);
2087         }
2088
2089         list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
2090                 list_del(&cvt->head);
2091                 kfree(cvt->name);
2092                 kfree(cvt);
2093         }
2094
2095         list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
2096                 for (i = 0; i < pin->num_ports; i++)
2097                         pin->ports[i].pin = NULL;
2098                 kfree(pin->ports);
2099                 list_del(&pin->head);
2100                 kfree(pin);
2101         }
2102
2103         return 0;
2104 }
2105
2106 #ifdef CONFIG_PM
2107 /*
2108  * Power management sequences
2109  * ==========================
2110  *
2111  * The following explains the PM handling of HDAC HDMI with its parent
2112  * device SKL and display power usage
2113  *
2114  * Probe
2115  * -----
2116  * In SKL probe,
2117  * 1. skl_probe_work() powers up the display (refcount++ -> 1)
2118  * 2. enumerates the codecs on the link
2119  * 3. powers down the display  (refcount-- -> 0)
2120  *
2121  * In HDAC HDMI probe,
2122  * 1. hdac_hdmi_dev_probe() powers up the display (refcount++ -> 1)
2123  * 2. probe the codec
2124  * 3. put the HDAC HDMI device to runtime suspend
2125  * 4. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0)
2126  *
2127  * Once children are runtime suspended, SKL device also goes to runtime
2128  * suspend
2129  *
2130  * HDMI Playback
2131  * -------------
2132  * Open HDMI device,
2133  * 1. skl_runtime_resume() invoked
2134  * 2. hdac_hdmi_runtime_resume() powers up the display (refcount++ -> 1)
2135  *
2136  * Close HDMI device,
2137  * 1. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0)
2138  * 2. skl_runtime_suspend() invoked
2139  *
2140  * S0/S3 Cycle with playback in progress
2141  * -------------------------------------
2142  * When the device is opened for playback, the device is runtime active
2143  * already and the display refcount is 1 as explained above.
2144  *
2145  * Entering to S3,
2146  * 1. hdmi_codec_prepare() invoke the runtime resume of codec which just
2147  *    increments the PM runtime usage count of the codec since the device
2148  *    is in use already
2149  * 2. skl_suspend() powers down the display (refcount-- -> 0)
2150  *
2151  * Wakeup from S3,
2152  * 1. skl_resume() powers up the display (refcount++ -> 1)
2153  * 2. hdmi_codec_complete() invokes the runtime suspend of codec which just
2154  *    decrements the PM runtime usage count of the codec since the device
2155  *    is in use already
2156  *
2157  * Once playback is stopped, the display refcount is set to 0 as explained
2158  * above in the HDMI playback sequence. The PM handlings are designed in
2159  * such way that to balance the refcount of display power when the codec
2160  * device put to S3 while playback is going on.
2161  *
2162  * S0/S3 Cycle without playback in progress
2163  * ----------------------------------------
2164  * Entering to S3,
2165  * 1. hdmi_codec_prepare() invoke the runtime resume of codec
2166  * 2. skl_runtime_resume() invoked
2167  * 3. hdac_hdmi_runtime_resume() powers up the display (refcount++ -> 1)
2168  * 4. skl_suspend() powers down the display (refcount-- -> 0)
2169  *
2170  * Wakeup from S3,
2171  * 1. skl_resume() powers up the display (refcount++ -> 1)
2172  * 2. hdmi_codec_complete() invokes the runtime suspend of codec
2173  * 3. hdac_hdmi_runtime_suspend() powers down the display (refcount-- -> 0)
2174  * 4. skl_runtime_suspend() invoked
2175  */
2176 static int hdac_hdmi_runtime_suspend(struct device *dev)
2177 {
2178         struct hdac_device *hdev = dev_to_hdac_dev(dev);
2179         struct hdac_bus *bus = hdev->bus;
2180         struct hdac_ext_link *hlink = NULL;
2181         int err;
2182
2183         dev_dbg(dev, "Enter: %s\n", __func__);
2184
2185         /* controller may not have been initialized for the first time */
2186         if (!bus)
2187                 return 0;
2188
2189         /*
2190          * Power down afg.
2191          * codec_read is preferred over codec_write to set the power state.
2192          * This way verb is send to set the power state and response
2193          * is received. So setting power state is ensured without using loop
2194          * to read the state.
2195          */
2196         snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2197                                                         AC_PWRST_D3);
2198
2199         hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
2200         if (!hlink) {
2201                 dev_err(dev, "hdac link not found\n");
2202                 return -EIO;
2203         }
2204
2205         snd_hdac_ext_bus_link_put(bus, hlink);
2206
2207         err = snd_hdac_display_power(bus, false);
2208         if (err < 0)
2209                 dev_err(dev, "Cannot turn off display power on i915\n");
2210
2211         return err;
2212 }
2213
2214 static int hdac_hdmi_runtime_resume(struct device *dev)
2215 {
2216         struct hdac_device *hdev = dev_to_hdac_dev(dev);
2217         struct hdac_bus *bus = hdev->bus;
2218         struct hdac_ext_link *hlink = NULL;
2219         int err;
2220
2221         dev_dbg(dev, "Enter: %s\n", __func__);
2222
2223         /* controller may not have been initialized for the first time */
2224         if (!bus)
2225                 return 0;
2226
2227         hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
2228         if (!hlink) {
2229                 dev_err(dev, "hdac link not found\n");
2230                 return -EIO;
2231         }
2232
2233         snd_hdac_ext_bus_link_get(bus, hlink);
2234
2235         err = snd_hdac_display_power(bus, true);
2236         if (err < 0) {
2237                 dev_err(dev, "Cannot turn on display power on i915\n");
2238                 return err;
2239         }
2240
2241         hdac_hdmi_skl_enable_all_pins(hdev);
2242         hdac_hdmi_skl_enable_dp12(hdev);
2243
2244         /* Power up afg */
2245         snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2246                                                         AC_PWRST_D0);
2247
2248         return 0;
2249 }
2250 #else
2251 #define hdac_hdmi_runtime_suspend NULL
2252 #define hdac_hdmi_runtime_resume NULL
2253 #endif
2254
2255 static const struct dev_pm_ops hdac_hdmi_pm = {
2256         SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
2257         .prepare = hdmi_codec_prepare,
2258         .complete = hdmi_codec_complete,
2259 };
2260
2261 static const struct hda_device_id hdmi_list[] = {
2262         HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
2263         HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
2264         HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
2265         HDA_CODEC_EXT_ENTRY(0x8086280c, 0x100000, "Cannonlake HDMI",
2266                                                    &intel_glk_drv_data),
2267         HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI",
2268                                                    &intel_glk_drv_data),
2269         {}
2270 };
2271
2272 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
2273
2274 static struct hdac_driver hdmi_driver = {
2275         .driver = {
2276                 .name   = "HDMI HDA Codec",
2277                 .pm = &hdac_hdmi_pm,
2278         },
2279         .id_table       = hdmi_list,
2280         .probe          = hdac_hdmi_dev_probe,
2281         .remove         = hdac_hdmi_dev_remove,
2282 };
2283
2284 static int __init hdmi_init(void)
2285 {
2286         return snd_hda_ext_driver_register(&hdmi_driver);
2287 }
2288
2289 static void __exit hdmi_exit(void)
2290 {
2291         snd_hda_ext_driver_unregister(&hdmi_driver);
2292 }
2293
2294 module_init(hdmi_init);
2295 module_exit(hdmi_exit);
2296
2297 MODULE_LICENSE("GPL v2");
2298 MODULE_DESCRIPTION("HDMI HD codec");
2299 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
2300 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");