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_ext_device *edev;
  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_priv {
 125         struct hdac_hdmi_dai_port_map dai_map[HDA_MAX_CVTS];
 126         struct list_head pin_list;
 127         struct list_head cvt_list;
 128         struct list_head pcm_list;
 129         int num_pin;
 130         int num_cvt;
 131         int num_ports;
 132         struct mutex pin_mutex;
 133         struct hdac_chmap chmap;
 134 };
 135
 136 static struct hdac_hdmi_pcm *
 137 hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi,
 138                            struct hdac_hdmi_cvt *cvt)
 139 {
 140         struct hdac_hdmi_pcm *pcm = NULL;
 141
 142         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 143                 if (pcm->cvt == cvt)
 144                         break;
 145         }
 146
 147         return pcm;
 148 }
 149
 150 static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm,
 151                 struct hdac_hdmi_port *port, bool is_connect)
 152 {
 153         struct hdac_ext_device *edev = port->pin->edev;
 154
 155         if (is_connect)
 156                 snd_soc_dapm_enable_pin(port->dapm, port->jack_pin);
 157         else
 158                 snd_soc_dapm_disable_pin(port->dapm, port->jack_pin);
 159
 160         if (is_connect) {
 161                 /*
 162                  * Report Jack connect event when a device is connected
 163                  * for the first time where same PCM is attached to multiple
 164                  * ports.
 165                  */
 166                 if (pcm->jack_event == 0) {
 167                         dev_dbg(&edev->hdac.dev,
 168                                         "jack report for pcm=%d\n",
 169                                         pcm->pcm_id);
 170                         snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT,
 171                                                 SND_JACK_AVOUT);
 172                 }
 173                 pcm->jack_event++;
 174         } else {
 175                 /*
 176                  * Report Jack disconnect event when a device is disconnected
 177                  * is the only last connected device when same PCM is attached
 178                  * to multiple ports.
 179                  */
 180                 if (pcm->jack_event == 1)
 181                         snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT);
 182                 if (pcm->jack_event > 0)
 183                         pcm->jack_event--;
 184         }
 185
 186         snd_soc_dapm_sync(port->dapm);
 187 }
 188
 189 /* MST supported verbs */
 190 /*
 191  * Get the no devices that can be connected to a port on the Pin widget.
 192  */
 193 static int hdac_hdmi_get_port_len(struct hdac_ext_device *hdac, hda_nid_t nid)
 194 {
 195         unsigned int caps;
 196         unsigned int type, param;
 197
 198         caps = get_wcaps(&hdac->hdac, nid);
 199         type = get_wcaps_type(caps);
 200
 201         if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN))
 202                 return 0;
 203
 204         param = snd_hdac_read_parm_uncached(&hdac->hdac, nid,
 205                                         AC_PAR_DEVLIST_LEN);
 206         if (param == -1)
 207                 return param;
 208
 209         return param & AC_DEV_LIST_LEN_MASK;
 210 }
 211
 212 /*
 213  * Get the port entry select on the pin. Return the port entry
 214  * id selected on the pin. Return 0 means the first port entry
 215  * is selected or MST is not supported.
 216  */
 217 static int hdac_hdmi_port_select_get(struct hdac_ext_device *hdac,
 218                                         struct hdac_hdmi_port *port)
 219 {
 220         return snd_hdac_codec_read(&hdac->hdac, port->pin->nid,
 221                                 0, AC_VERB_GET_DEVICE_SEL, 0);
 222 }
 223
 224 /*
 225  * Sets the selected port entry for the configuring Pin widget verb.
 226  * returns error if port set is not equal to port get otherwise success
 227  */
 228 static int hdac_hdmi_port_select_set(struct hdac_ext_device *hdac,
 229                                         struct hdac_hdmi_port *port)
 230 {
 231         int num_ports;
 232
 233         if (!port->pin->mst_capable)
 234                 return 0;
 235
 236         /* AC_PAR_DEVLIST_LEN is 0 based. */
 237         num_ports = hdac_hdmi_get_port_len(hdac, port->pin->nid);
 238
 239         if (num_ports < 0)
 240                 return -EIO;
 241         /*
 242          * Device List Length is a 0 based integer value indicating the
 243          * number of sink device that a MST Pin Widget can support.
 244          */
 245         if (num_ports + 1  < port->id)
 246                 return 0;
 247
 248         snd_hdac_codec_write(&hdac->hdac, port->pin->nid, 0,
 249                         AC_VERB_SET_DEVICE_SEL, port->id);
 250
 251         if (port->id != hdac_hdmi_port_select_get(hdac, port))
 252                 return -EIO;
 253
 254         dev_dbg(&hdac->hdac.dev, "Selected the port=%d\n", port->id);
 255
 256         return 0;
 257 }
 258
 259 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
 260                                                 int pcm_idx)
 261 {
 262         struct hdac_hdmi_pcm *pcm;
 263
 264         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 265                 if (pcm->pcm_id == pcm_idx)
 266                         return pcm;
 267         }
 268
 269         return NULL;
 270 }
 271
 272 static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev)
 273 {
 274         struct hdac_device *hdac = dev_to_hdac_dev(dev);
 275
 276         return to_ehdac_device(hdac);
 277 }
 278
 279 static unsigned int sad_format(const u8 *sad)
 280 {
 281         return ((sad[0] >> 0x3) & 0x1f);
 282 }
 283
 284 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
 285 {
 286         return (sad[2] & 7);
 287 }
 288
 289 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
 290                                                 void *eld)
 291 {
 292         u64 formats = SNDRV_PCM_FMTBIT_S16;
 293         int i;
 294         const u8 *sad, *eld_buf = eld;
 295
 296         sad = drm_eld_sad(eld_buf);
 297         if (!sad)
 298                 goto format_constraint;
 299
 300         for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
 301                 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
 302
 303                         /*
 304                          * the controller support 20 and 24 bits in 32 bit
 305                          * container so we set S32
 306                          */
 307                         if (sad_sample_bits_lpcm(sad) & 0x6)
 308                                 formats |= SNDRV_PCM_FMTBIT_S32;
 309                 }
 310         }
 311
 312 format_constraint:
 313         return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
 314                                 formats);
 315
 316 }
 317
 318 static void
 319 hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
 320                                 int packet_index, int byte_index)
 321 {
 322         int val;
 323
 324         val = (packet_index << 5) | (byte_index & 0x1f);
 325
 326         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
 327                                 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_ext_device *hdac,
 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 = hdac->private_data;
 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(&hdac->hdac, 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(&hdac->hdac, 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(&hdac->hdac.dev, "Invalid connection type: %d\n",
 396                                                 conn_type);
 397                 return -EIO;
 398         }
 399
 400         /* stop infoframe transmission */
 401         hdac_hdmi_set_dip_index(hdac, pin->nid, 0x0, 0x0);
 402         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 403                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
 404
 405
 406         /*  Fill infoframe. Index auto-incremented */
 407         hdac_hdmi_set_dip_index(hdac, pin->nid, 0x0, 0x0);
 408         if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
 409                 for (i = 0; i < sizeof(buffer); i++)
 410                         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 411                                 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
 412         } else {
 413                 for (i = 0; i < sizeof(dp_ai); i++)
 414                         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 415                                 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
 416         }
 417
 418         /* Start infoframe */
 419         hdac_hdmi_set_dip_index(hdac, pin->nid, 0x0, 0x0);
 420         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
 421                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
 422
 423         return 0;
 424 }
 425
 426 static int hdac_hdmi_set_tdm_slot(struct snd_soc_dai *dai,
 427                 unsigned int tx_mask, unsigned int rx_mask,
 428                 int slots, int slot_width)
 429 {
 430         struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai);
 431         struct hdac_hdmi_priv *hdmi = edev->private_data;
 432         struct hdac_hdmi_dai_port_map *dai_map;
 433         struct hdac_hdmi_pcm *pcm;
 434
 435         dev_dbg(&edev->hdac.dev, "%s: strm_tag: %d\n", __func__, tx_mask);
 436
 437         dai_map = &hdmi->dai_map[dai->id];
 438
 439         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
 440
 441         if (pcm)
 442                 pcm->stream_tag = (tx_mask << 4);
 443
 444         return 0;
 445 }
 446
 447 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
 448         struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
 449 {
 450         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 451         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 452         struct hdac_hdmi_dai_port_map *dai_map;
 453         struct hdac_hdmi_port *port;
 454         struct hdac_hdmi_pcm *pcm;
 455         int format;
 456
 457         dai_map = &hdmi->dai_map[dai->id];
 458         port = dai_map->port;
 459
 460         if (!port)
 461                 return -ENODEV;
 462
 463         if ((!port->eld.monitor_present) || (!port->eld.eld_valid)) {
 464                 dev_err(&hdac->hdac.dev,
 465                         "device is not configured for this pin:port%d:%d\n",
 466                                         port->pin->nid, port->id);
 467                 return -ENODEV;
 468         }
 469
 470         format = snd_hdac_calc_stream_format(params_rate(hparams),
 471                         params_channels(hparams), params_format(hparams),
 472                         24, 0);
 473
 474         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
 475         if (!pcm)
 476                 return -EIO;
 477
 478         pcm->format = format;
 479         pcm->channels = params_channels(hparams);
 480
 481         return 0;
 482 }
 483
 484 static int hdac_hdmi_query_port_connlist(struct hdac_ext_device *hdac,
 485                                         struct hdac_hdmi_pin *pin,
 486                                         struct hdac_hdmi_port *port)
 487 {
 488         if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
 489                 dev_warn(&hdac->hdac.dev,
 490                         "HDMI: pin %d wcaps %#x does not support connection list\n",
 491                         pin->nid, get_wcaps(&hdac->hdac, pin->nid));
 492                 return -EINVAL;
 493         }
 494
 495         if (hdac_hdmi_port_select_set(hdac, port) < 0)
 496                 return -EIO;
 497
 498         port->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
 499                         port->mux_nids, HDA_MAX_CONNECTIONS);
 500         if (port->num_mux_nids == 0)
 501                 dev_warn(&hdac->hdac.dev,
 502                         "No connections found for pin:port %d:%d\n",
 503                                                 pin->nid, port->id);
 504
 505         dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin:port %d:%d\n",
 506                         port->num_mux_nids, pin->nid, port->id);
 507
 508         return port->num_mux_nids;
 509 }
 510
 511 /*
 512  * Query pcm list and return port to which stream is routed.
 513  *
 514  * Also query connection list of the pin, to validate the cvt to port map.
 515  *
 516  * Same stream rendering to multiple ports simultaneously can be done
 517  * possibly, but not supported for now in driver. So return the first port
 518  * connected.
 519  */
 520 static struct hdac_hdmi_port *hdac_hdmi_get_port_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_port *port = NULL;
 527         int ret, i;
 528
 529         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 530                 if (pcm->cvt == cvt) {
 531                         if (list_empty(&pcm->port_list))
 532                                 continue;
 533
 534                         list_for_each_entry(port, &pcm->port_list, head) {
 535                                 mutex_lock(&pcm->lock);
 536                                 ret = hdac_hdmi_query_port_connlist(edev,
 537                                                         port->pin, port);
 538                                 mutex_unlock(&pcm->lock);
 539                                 if (ret < 0)
 540                                         continue;
 541
 542                                 for (i = 0; i < port->num_mux_nids; i++) {
 543                                         if (port->mux_nids[i] == cvt->nid &&
 544                                                 port->eld.monitor_present &&
 545                                                 port->eld.eld_valid)
 546                                                 return port;
 547                                 }
 548                         }
 549                 }
 550         }
 551
 552         return NULL;
 553 }
 554
 555 /*
 556  * This tries to get a valid pin and set the HW constraints based on the
 557  * ELD. Even if a valid pin is not found return success so that device open
 558  * doesn't fail.
 559  */
 560 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
 561                         struct snd_soc_dai *dai)
 562 {
 563         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 564         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 565         struct hdac_hdmi_dai_port_map *dai_map;
 566         struct hdac_hdmi_cvt *cvt;
 567         struct hdac_hdmi_port *port;
 568         int ret;
 569
 570         dai_map = &hdmi->dai_map[dai->id];
 571
 572         cvt = dai_map->cvt;
 573         port = hdac_hdmi_get_port_from_cvt(hdac, hdmi, cvt);
 574
 575         /*
 576          * To make PA and other userland happy.
 577          * userland scans devices so returning error does not help.
 578          */
 579         if (!port)
 580                 return 0;
 581         if ((!port->eld.monitor_present) ||
 582                         (!port->eld.eld_valid)) {
 583
 584                 dev_warn(&hdac->hdac.dev,
 585                         "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n",
 586                         port->eld.monitor_present, port->eld.eld_valid,
 587                         port->pin->nid, port->id);
 588
 589                 return 0;
 590         }
 591
 592         dai_map->port = port;
 593
 594         ret = hdac_hdmi_eld_limit_formats(substream->runtime,
 595                                 port->eld.eld_buffer);
 596         if (ret < 0)
 597                 return ret;
 598
 599         return snd_pcm_hw_constraint_eld(substream->runtime,
 600                                 port->eld.eld_buffer);
 601 }
 602
 603 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
 604                 struct snd_soc_dai *dai)
 605 {
 606         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
 607         struct hdac_hdmi_priv *hdmi = hdac->private_data;
 608         struct hdac_hdmi_dai_port_map *dai_map;
 609         struct hdac_hdmi_pcm *pcm;
 610
 611         dai_map = &hdmi->dai_map[dai->id];
 612
 613         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
 614
 615         if (pcm) {
 616                 mutex_lock(&pcm->lock);
 617                 pcm->chmap_set = false;
 618                 memset(pcm->chmap, 0, sizeof(pcm->chmap));
 619                 pcm->channels = 0;
 620                 mutex_unlock(&pcm->lock);
 621         }
 622
 623         if (dai_map->port)
 624                 dai_map->port = NULL;
 625 }
 626
 627 static int
 628 hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt)
 629 {
 630         unsigned int chans;
 631         struct hdac_ext_device *edev = to_ehdac_device(hdac);
 632         struct hdac_hdmi_priv *hdmi = edev->private_data;
 633         int err;
 634
 635         chans = get_wcaps(hdac, cvt->nid);
 636         chans = get_wcaps_channels(chans);
 637
 638         cvt->params.channels_min = 2;
 639
 640         cvt->params.channels_max = chans;
 641         if (chans > hdmi->chmap.channels_max)
 642                 hdmi->chmap.channels_max = chans;
 643
 644         err = snd_hdac_query_supported_pcm(hdac, cvt->nid,
 645                         &cvt->params.rates,
 646                         &cvt->params.formats,
 647                         &cvt->params.maxbps);
 648         if (err < 0)
 649                 dev_err(&hdac->dev,
 650                         "Failed to query pcm params for nid %d: %d\n",
 651                         cvt->nid, err);
 652
 653         return err;
 654 }
 655
 656 static int hdac_hdmi_fill_widget_info(struct device *dev,
 657                 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id,
 658                 void *priv, const char *wname, const char *stream,
 659                 struct snd_kcontrol_new *wc, int numkc,
 660                 int (*event)(struct snd_soc_dapm_widget *,
 661                 struct snd_kcontrol *, int), unsigned short event_flags)
 662 {
 663         w->id = id;
 664         w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
 665         if (!w->name)
 666                 return -ENOMEM;
 667
 668         w->sname = stream;
 669         w->reg = SND_SOC_NOPM;
 670         w->shift = 0;
 671         w->kcontrol_news = wc;
 672         w->num_kcontrols = numkc;
 673         w->priv = priv;
 674         w->event = event;
 675         w->event_flags = event_flags;
 676
 677         return 0;
 678 }
 679
 680 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
 681                 const char *sink, const char *control, const char *src,
 682                 int (*handler)(struct snd_soc_dapm_widget *src,
 683                         struct snd_soc_dapm_widget *sink))
 684 {
 685         route->sink = sink;
 686         route->source = src;
 687         route->control = control;
 688         route->connected = handler;
 689 }
 690
 691 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_ext_device *edev,
 692                                         struct hdac_hdmi_port *port)
 693 {
 694         struct hdac_hdmi_priv *hdmi = edev->private_data;
 695         struct hdac_hdmi_pcm *pcm = NULL;
 696         struct hdac_hdmi_port *p;
 697
 698         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 699                 if (list_empty(&pcm->port_list))
 700                         continue;
 701
 702                 list_for_each_entry(p, &pcm->port_list, head) {
 703                         if (p->id == port->id && port->pin == p->pin)
 704                                 return pcm;
 705                 }
 706         }
 707
 708         return NULL;
 709 }
 710
 711 static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
 712                              hda_nid_t nid, unsigned int pwr_state)
 713 {
 714         if (get_wcaps(&edev->hdac, nid) & AC_WCAP_POWER) {
 715                 if (!snd_hdac_check_power_state(&edev->hdac, nid, pwr_state))
 716                         snd_hdac_codec_write(&edev->hdac, nid, 0,
 717                                 AC_VERB_SET_POWER_STATE, pwr_state);
 718         }
 719 }
 720
 721 static void hdac_hdmi_set_amp(struct hdac_ext_device *edev,
 722                                    hda_nid_t nid, int val)
 723 {
 724         if (get_wcaps(&edev->hdac, nid) & AC_WCAP_OUT_AMP)
 725                 snd_hdac_codec_write(&edev->hdac, nid, 0,
 726                                         AC_VERB_SET_AMP_GAIN_MUTE, val);
 727 }
 728
 729
 730 static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w,
 731                                         struct snd_kcontrol *kc, int event)
 732 {
 733         struct hdac_hdmi_port *port = w->priv;
 734         struct hdac_ext_device *edev = to_hda_ext_device(w->dapm->dev);
 735         struct hdac_hdmi_pcm *pcm;
 736
 737         dev_dbg(&edev->hdac.dev, "%s: widget: %s event: %x\n",
 738                         __func__, w->name, event);
 739
 740         pcm = hdac_hdmi_get_pcm(edev, port);
 741         if (!pcm)
 742                 return -EIO;
 743
 744         /* set the device if pin is mst_capable */
 745         if (hdac_hdmi_port_select_set(edev, port) < 0)
 746                 return -EIO;
 747
 748         switch (event) {
 749         case SND_SOC_DAPM_PRE_PMU:
 750                 hdac_hdmi_set_power_state(edev, port->pin->nid, AC_PWRST_D0);
 751
 752                 /* Enable out path for this pin widget */
 753                 snd_hdac_codec_write(&edev->hdac, port->pin->nid, 0,
 754                                 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
 755
 756                 hdac_hdmi_set_amp(edev, port->pin->nid, AMP_OUT_UNMUTE);
 757
 758                 return hdac_hdmi_setup_audio_infoframe(edev, pcm, port);
 759
 760         case SND_SOC_DAPM_POST_PMD:
 761                 hdac_hdmi_set_amp(edev, port->pin->nid, AMP_OUT_MUTE);
 762
 763                 /* Disable out path for this pin widget */
 764                 snd_hdac_codec_write(&edev->hdac, port->pin->nid, 0,
 765                                 AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
 766
 767                 hdac_hdmi_set_power_state(edev, port->pin->nid, AC_PWRST_D3);
 768                 break;
 769
 770         }
 771
 772         return 0;
 773 }
 774
 775 static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w,
 776                                         struct snd_kcontrol *kc, int event)
 777 {
 778         struct hdac_hdmi_cvt *cvt = w->priv;
 779         struct hdac_ext_device *edev = to_hda_ext_device(w->dapm->dev);
 780         struct hdac_hdmi_priv *hdmi = edev->private_data;
 781         struct hdac_hdmi_pcm *pcm;
 782
 783         dev_dbg(&edev->hdac.dev, "%s: widget: %s event: %x\n",
 784                         __func__, w->name, event);
 785
 786         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt);
 787         if (!pcm)
 788                 return -EIO;
 789
 790         switch (event) {
 791         case SND_SOC_DAPM_PRE_PMU:
 792                 hdac_hdmi_set_power_state(edev, cvt->nid, AC_PWRST_D0);
 793
 794                 /* Enable transmission */
 795                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
 796                         AC_VERB_SET_DIGI_CONVERT_1, 1);
 797
 798                 /* Category Code (CC) to zero */
 799                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
 800                         AC_VERB_SET_DIGI_CONVERT_2, 0);
 801
 802                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
 803                                 AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag);
 804                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
 805                                 AC_VERB_SET_STREAM_FORMAT, pcm->format);
 806                 break;
 807
 808         case SND_SOC_DAPM_POST_PMD:
 809                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
 810                                 AC_VERB_SET_CHANNEL_STREAMID, 0);
 811                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
 812                                 AC_VERB_SET_STREAM_FORMAT, 0);
 813
 814                 hdac_hdmi_set_power_state(edev, cvt->nid, AC_PWRST_D3);
 815                 break;
 816
 817         }
 818
 819         return 0;
 820 }
 821
 822 static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w,
 823                                         struct snd_kcontrol *kc, int event)
 824 {
 825         struct hdac_hdmi_port *port = w->priv;
 826         struct hdac_ext_device *edev = to_hda_ext_device(w->dapm->dev);
 827         int mux_idx;
 828
 829         dev_dbg(&edev->hdac.dev, "%s: widget: %s event: %x\n",
 830                         __func__, w->name, event);
 831
 832         if (!kc)
 833                 kc  = w->kcontrols[0];
 834
 835         mux_idx = dapm_kcontrol_get_value(kc);
 836
 837         /* set the device if pin is mst_capable */
 838         if (hdac_hdmi_port_select_set(edev, port) < 0)
 839                 return -EIO;
 840
 841         if (mux_idx > 0) {
 842                 snd_hdac_codec_write(&edev->hdac, port->pin->nid, 0,
 843                         AC_VERB_SET_CONNECT_SEL, (mux_idx - 1));
 844         }
 845
 846         return 0;
 847 }
 848
 849 /*
 850  * Based on user selection, map the PINs with the PCMs.
 851  */
 852 static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol,
 853                 struct snd_ctl_elem_value *ucontrol)
 854 {
 855         int ret;
 856         struct hdac_hdmi_port *p, *p_next;
 857         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
 858         struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
 859         struct snd_soc_dapm_context *dapm = w->dapm;
 860         struct hdac_hdmi_port *port = w->priv;
 861         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
 862         struct hdac_hdmi_priv *hdmi = edev->private_data;
 863         struct hdac_hdmi_pcm *pcm = NULL;
 864         const char *cvt_name =  e->texts[ucontrol->value.enumerated.item[0]];
 865
 866         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
 867         if (ret < 0)
 868                 return ret;
 869
 870         if (port == NULL)
 871                 return -EINVAL;
 872
 873         mutex_lock(&hdmi->pin_mutex);
 874         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 875                 if (list_empty(&pcm->port_list))
 876                         continue;
 877
 878                 list_for_each_entry_safe(p, p_next, &pcm->port_list, head) {
 879                         if (p == port && p->id == port->id &&
 880                                         p->pin == port->pin) {
 881                                 hdac_hdmi_jack_report(pcm, port, false);
 882                                 list_del(&p->head);
 883                         }
 884                 }
 885         }
 886
 887         /*
 888          * Jack status is not reported during device probe as the
 889          * PCMs are not registered by then. So report it here.
 890          */
 891         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
 892                 if (!strcmp(cvt_name, pcm->cvt->name)) {
 893                         list_add_tail(&port->head, &pcm->port_list);
 894                         if (port->eld.monitor_present && port->eld.eld_valid) {
 895                                 hdac_hdmi_jack_report(pcm, port, true);
 896                                 mutex_unlock(&hdmi->pin_mutex);
 897                                 return ret;
 898                         }
 899                 }
 900         }
 901         mutex_unlock(&hdmi->pin_mutex);
 902
 903         return ret;
 904 }
 905
 906 /*
 907  * Ideally the Mux inputs should be based on the num_muxs enumerated, but
 908  * the display driver seem to be programming the connection list for the pin
 909  * widget runtime.
 910  *
 911  * So programming all the possible inputs for the mux, the user has to take
 912  * care of selecting the right one and leaving all other inputs selected to
 913  * "NONE"
 914  */
 915 static int hdac_hdmi_create_pin_port_muxs(struct hdac_ext_device *edev,
 916                                 struct hdac_hdmi_port *port,
 917                                 struct snd_soc_dapm_widget *widget,
 918                                 const char *widget_name)
 919 {
 920         struct hdac_hdmi_priv *hdmi = edev->private_data;
 921         struct hdac_hdmi_pin *pin = port->pin;
 922         struct snd_kcontrol_new *kc;
 923         struct hdac_hdmi_cvt *cvt;
 924         struct soc_enum *se;
 925         char kc_name[NAME_SIZE];
 926         char mux_items[NAME_SIZE];
 927         /* To hold inputs to the Pin mux */
 928         char *items[HDA_MAX_CONNECTIONS];
 929         int i = 0;
 930         int num_items = hdmi->num_cvt + 1;
 931
 932         kc = devm_kzalloc(&edev->hdac.dev, sizeof(*kc), GFP_KERNEL);
 933         if (!kc)
 934                 return -ENOMEM;
 935
 936         se = devm_kzalloc(&edev->hdac.dev, sizeof(*se), GFP_KERNEL);
 937         if (!se)
 938                 return -ENOMEM;
 939
 940         sprintf(kc_name, "Pin %d port %d Input", pin->nid, port->id);
 941         kc->name = devm_kstrdup(&edev->hdac.dev, kc_name, GFP_KERNEL);
 942         if (!kc->name)
 943                 return -ENOMEM;
 944
 945         kc->private_value = (long)se;
 946         kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
 947         kc->access = 0;
 948         kc->info = snd_soc_info_enum_double;
 949         kc->put = hdac_hdmi_set_pin_port_mux;
 950         kc->get = snd_soc_dapm_get_enum_double;
 951
 952         se->reg = SND_SOC_NOPM;
 953
 954         /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
 955         se->items = num_items;
 956         se->mask = roundup_pow_of_two(se->items) - 1;
 957
 958         sprintf(mux_items, "NONE");
 959         items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
 960         if (!items[i])
 961                 return -ENOMEM;
 962
 963         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
 964                 i++;
 965                 sprintf(mux_items, "cvt %d", cvt->nid);
 966                 items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
 967                 if (!items[i])
 968                         return -ENOMEM;
 969         }
 970
 971         se->texts = devm_kmemdup(&edev->hdac.dev, items,
 972                         (num_items  * sizeof(char *)), GFP_KERNEL);
 973         if (!se->texts)
 974                 return -ENOMEM;
 975
 976         return hdac_hdmi_fill_widget_info(&edev->hdac.dev, widget,
 977                         snd_soc_dapm_mux, port, widget_name, NULL, kc, 1,
 978                         hdac_hdmi_pin_mux_widget_event,
 979                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG);
 980 }
 981
 982 /* Add cvt <- input <- mux route map */
 983 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_ext_device *edev,
 984                         struct snd_soc_dapm_widget *widgets,
 985                         struct snd_soc_dapm_route *route, int rindex)
 986 {
 987         struct hdac_hdmi_priv *hdmi = edev->private_data;
 988         const struct snd_kcontrol_new *kc;
 989         struct soc_enum *se;
 990         int mux_index = hdmi->num_cvt + hdmi->num_ports;
 991         int i, j;
 992
 993         for (i = 0; i < hdmi->num_ports; i++) {
 994                 kc = widgets[mux_index].kcontrol_news;
 995                 se = (struct soc_enum *)kc->private_value;
 996                 for (j = 0; j < hdmi->num_cvt; j++) {
 997                         hdac_hdmi_fill_route(&route[rindex],
 998                                         widgets[mux_index].name,
 999                                         se->texts[j + 1],
1000                                         widgets[j].name, NULL);
1001
1002                         rindex++;
1003                 }
1004
1005                 mux_index++;
1006         }
1007 }
1008
1009 /*
1010  * Widgets are added in the below sequence
1011  *      Converter widgets for num converters enumerated
1012  *      Pin-port widgets for num ports for Pins enumerated
1013  *      Pin-port mux widgets to represent connenction list of pin widget
1014  *
1015  * For each port, one Mux and One output widget is added
1016  * Total widgets elements = num_cvt + (num_ports * 2);
1017  *
1018  * Routes are added as below:
1019  *      pin-port mux -> pin (based on num_ports)
1020  *      cvt -> "Input sel control" -> pin-port_mux
1021  *
1022  * Total route elements:
1023  *      num_ports + (pin_muxes * num_cvt)
1024  */
1025 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
1026 {
1027         struct snd_soc_dapm_widget *widgets;
1028         struct snd_soc_dapm_route *route;
1029         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
1030         struct hdac_hdmi_priv *hdmi = edev->private_data;
1031         struct snd_soc_dai_driver *dai_drv = dapm->component->dai_drv;
1032         char widget_name[NAME_SIZE];
1033         struct hdac_hdmi_cvt *cvt;
1034         struct hdac_hdmi_pin *pin;
1035         int ret, i = 0, num_routes = 0, j;
1036
1037         if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
1038                 return -EINVAL;
1039
1040         widgets = devm_kzalloc(dapm->dev, (sizeof(*widgets) *
1041                                 ((2 * hdmi->num_ports) + hdmi->num_cvt)),
1042                                 GFP_KERNEL);
1043
1044         if (!widgets)
1045                 return -ENOMEM;
1046
1047         /* DAPM widgets to represent each converter widget */
1048         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1049                 sprintf(widget_name, "Converter %d", cvt->nid);
1050                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1051                         snd_soc_dapm_aif_in, cvt,
1052                         widget_name, dai_drv[i].playback.stream_name, NULL, 0,
1053                         hdac_hdmi_cvt_output_widget_event,
1054                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
1055                 if (ret < 0)
1056                         return ret;
1057                 i++;
1058         }
1059
1060         list_for_each_entry(pin, &hdmi->pin_list, head) {
1061                 for (j = 0; j < pin->num_ports; j++) {
1062                         sprintf(widget_name, "hif%d-%d Output",
1063                                 pin->nid, pin->ports[j].id);
1064                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1065                                         snd_soc_dapm_output, &pin->ports[j],
1066                                         widget_name, NULL, NULL, 0,
1067                                         hdac_hdmi_pin_output_widget_event,
1068                                         SND_SOC_DAPM_PRE_PMU |
1069                                         SND_SOC_DAPM_POST_PMD);
1070                         if (ret < 0)
1071                                 return ret;
1072                         pin->ports[j].output_pin = widgets[i].name;
1073                         i++;
1074                 }
1075         }
1076
1077         /* DAPM widgets to represent the connection list to pin widget */
1078         list_for_each_entry(pin, &hdmi->pin_list, head) {
1079                 for (j = 0; j < pin->num_ports; j++) {
1080                         sprintf(widget_name, "Pin%d-Port%d Mux",
1081                                 pin->nid, pin->ports[j].id);
1082                         ret = hdac_hdmi_create_pin_port_muxs(edev,
1083                                                 &pin->ports[j], &widgets[i],
1084                                                 widget_name);
1085                         if (ret < 0)
1086                                 return ret;
1087                         i++;
1088
1089                         /* For cvt to pin_mux mapping */
1090                         num_routes += hdmi->num_cvt;
1091
1092                         /* For pin_mux to pin mapping */
1093                         num_routes++;
1094                 }
1095         }
1096
1097         route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
1098                                                         GFP_KERNEL);
1099         if (!route)
1100                 return -ENOMEM;
1101
1102         i = 0;
1103         /* Add pin <- NULL <- mux route map */
1104         list_for_each_entry(pin, &hdmi->pin_list, head) {
1105                 for (j = 0; j < pin->num_ports; j++) {
1106                         int sink_index = i + hdmi->num_cvt;
1107                         int src_index = sink_index + pin->num_ports *
1108                                                 hdmi->num_pin;
1109
1110                         hdac_hdmi_fill_route(&route[i],
1111                                 widgets[sink_index].name, NULL,
1112                                 widgets[src_index].name, NULL);
1113                         i++;
1114                 }
1115         }
1116
1117         hdac_hdmi_add_pinmux_cvt_route(edev, widgets, route, i);
1118
1119         snd_soc_dapm_new_controls(dapm, widgets,
1120                 ((2 * hdmi->num_ports) + hdmi->num_cvt));
1121
1122         snd_soc_dapm_add_routes(dapm, route, num_routes);
1123         snd_soc_dapm_new_widgets(dapm->card);
1124
1125         return 0;
1126
1127 }
1128
1129 static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev)
1130 {
1131         struct hdac_hdmi_priv *hdmi = edev->private_data;
1132         struct hdac_hdmi_dai_port_map *dai_map;
1133         struct hdac_hdmi_cvt *cvt;
1134         int dai_id = 0;
1135
1136         if (list_empty(&hdmi->cvt_list))
1137                 return -EINVAL;
1138
1139         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1140                 dai_map = &hdmi->dai_map[dai_id];
1141                 dai_map->dai_id = dai_id;
1142                 dai_map->cvt = cvt;
1143
1144                 dai_id++;
1145
1146                 if (dai_id == HDA_MAX_CVTS) {
1147                         dev_warn(&edev->hdac.dev,
1148                                 "Max dais supported: %d\n", dai_id);
1149                         break;
1150                 }
1151         }
1152
1153         return 0;
1154 }
1155
1156 static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
1157 {
1158         struct hdac_hdmi_priv *hdmi = edev->private_data;
1159         struct hdac_hdmi_cvt *cvt;
1160         char name[NAME_SIZE];
1161
1162         cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
1163         if (!cvt)
1164                 return -ENOMEM;
1165
1166         cvt->nid = nid;
1167         sprintf(name, "cvt %d", cvt->nid);
1168         cvt->name = kstrdup(name, GFP_KERNEL);
1169
1170         list_add_tail(&cvt->head, &hdmi->cvt_list);
1171         hdmi->num_cvt++;
1172
1173         return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
1174 }
1175
1176 static int hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
1177                         struct hdac_hdmi_port *port)
1178 {
1179         unsigned int ver, mnl;
1180
1181         ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
1182                                                 >> DRM_ELD_VER_SHIFT;
1183
1184         if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
1185                 dev_err(&edev->hdac.dev, "HDMI: Unknown ELD version %d\n", ver);
1186                 return -EINVAL;
1187         }
1188
1189         mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
1190                 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
1191
1192         if (mnl > ELD_MAX_MNL) {
1193                 dev_err(&edev->hdac.dev, "HDMI: MNL Invalid %d\n", mnl);
1194                 return -EINVAL;
1195         }
1196
1197         port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER];
1198
1199         return 0;
1200 }
1201
1202 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin,
1203                                     struct hdac_hdmi_port *port)
1204 {
1205         struct hdac_ext_device *edev = pin->edev;
1206         struct hdac_hdmi_priv *hdmi = edev->private_data;
1207         struct hdac_hdmi_pcm *pcm;
1208         int size = 0;
1209         int port_id = -1;
1210
1211         if (!hdmi)
1212                 return;
1213
1214         /*
1215          * In case of non MST pin, get_eld info API expectes port
1216          * to be -1.
1217          */
1218         mutex_lock(&hdmi->pin_mutex);
1219         port->eld.monitor_present = false;
1220
1221         if (pin->mst_capable)
1222                 port_id = port->id;
1223
1224         size = snd_hdac_acomp_get_eld(&edev->hdac, pin->nid, port_id,
1225                                 &port->eld.monitor_present,
1226                                 port->eld.eld_buffer,
1227                                 ELD_MAX_SIZE);
1228
1229         if (size > 0) {
1230                 size = min(size, ELD_MAX_SIZE);
1231                 if (hdac_hdmi_parse_eld(edev, port) < 0)
1232                         size = -EINVAL;
1233         }
1234
1235         if (size > 0) {
1236                 port->eld.eld_valid = true;
1237                 port->eld.eld_size = size;
1238         } else {
1239                 port->eld.eld_valid = false;
1240                 port->eld.eld_size = 0;
1241         }
1242
1243         pcm = hdac_hdmi_get_pcm(edev, port);
1244
1245         if (!port->eld.monitor_present || !port->eld.eld_valid) {
1246
1247                 dev_err(&edev->hdac.dev, "%s: disconnect for pin:port %d:%d\n",
1248                                                 __func__, pin->nid, port->id);
1249
1250                 /*
1251                  * PCMs are not registered during device probe, so don't
1252                  * report jack here. It will be done in usermode mux
1253                  * control select.
1254                  */
1255                 if (pcm)
1256                         hdac_hdmi_jack_report(pcm, port, false);
1257
1258                 mutex_unlock(&hdmi->pin_mutex);
1259                 return;
1260         }
1261
1262         if (port->eld.monitor_present && port->eld.eld_valid) {
1263                 if (pcm)
1264                         hdac_hdmi_jack_report(pcm, port, true);
1265
1266                 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
1267                           port->eld.eld_buffer, port->eld.eld_size, false);
1268
1269         }
1270         mutex_unlock(&hdmi->pin_mutex);
1271 }
1272
1273 static int hdac_hdmi_add_ports(struct hdac_hdmi_priv *hdmi,
1274                                 struct hdac_hdmi_pin *pin)
1275 {
1276         struct hdac_hdmi_port *ports;
1277         int max_ports = HDA_MAX_PORTS;
1278         int i;
1279
1280         /*
1281          * FIXME: max_port may vary for each platform, so pass this as
1282          * as driver data or query from i915 interface when this API is
1283          * implemented.
1284          */
1285
1286         ports = kcalloc(max_ports, sizeof(*ports), GFP_KERNEL);
1287         if (!ports)
1288                 return -ENOMEM;
1289
1290         for (i = 0; i < max_ports; i++) {
1291                 ports[i].id = i;
1292                 ports[i].pin = pin;
1293         }
1294         pin->ports = ports;
1295         pin->num_ports = max_ports;
1296         return 0;
1297 }
1298
1299 static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
1300 {
1301         struct hdac_hdmi_priv *hdmi = edev->private_data;
1302         struct hdac_hdmi_pin *pin;
1303         int ret;
1304
1305         pin = kzalloc(sizeof(*pin), GFP_KERNEL);
1306         if (!pin)
1307                 return -ENOMEM;
1308
1309         pin->nid = nid;
1310         pin->mst_capable = false;
1311         pin->edev = edev;
1312         ret = hdac_hdmi_add_ports(hdmi, pin);
1313         if (ret < 0)
1314                 return ret;
1315
1316         list_add_tail(&pin->head, &hdmi->pin_list);
1317         hdmi->num_pin++;
1318         hdmi->num_ports += pin->num_ports;
1319
1320         return 0;
1321 }
1322
1323 #define INTEL_VENDOR_NID 0x08
1324 #define INTEL_GET_VENDOR_VERB 0xf81
1325 #define INTEL_SET_VENDOR_VERB 0x781
1326 #define INTEL_EN_DP12                   0x02 /* enable DP 1.2 features */
1327 #define INTEL_EN_ALL_PIN_CVTS   0x01 /* enable 2nd & 3rd pins and convertors */
1328
1329 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac)
1330 {
1331         unsigned int vendor_param;
1332
1333         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1334                                 INTEL_GET_VENDOR_VERB, 0);
1335         if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1336                 return;
1337
1338         vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1339         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1340                                 INTEL_SET_VENDOR_VERB, vendor_param);
1341         if (vendor_param == -1)
1342                 return;
1343 }
1344
1345 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
1346 {
1347         unsigned int vendor_param;
1348
1349         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1350                                 INTEL_GET_VENDOR_VERB, 0);
1351         if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1352                 return;
1353
1354         /* enable DP1.2 mode */
1355         vendor_param |= INTEL_EN_DP12;
1356         vendor_param = snd_hdac_codec_read(hdac, INTEL_VENDOR_NID, 0,
1357                                 INTEL_SET_VENDOR_VERB, vendor_param);
1358         if (vendor_param == -1)
1359                 return;
1360
1361 }
1362
1363 static struct snd_soc_dai_ops hdmi_dai_ops = {
1364         .startup = hdac_hdmi_pcm_open,
1365         .shutdown = hdac_hdmi_pcm_close,
1366         .hw_params = hdac_hdmi_set_hw_params,
1367         .set_tdm_slot = hdac_hdmi_set_tdm_slot,
1368 };
1369
1370 /*
1371  * Each converter can support a stream independently. So a dai is created
1372  * based on the number of converter queried.
1373  */
1374 static int hdac_hdmi_create_dais(struct hdac_device *hdac,
1375                 struct snd_soc_dai_driver **dais,
1376                 struct hdac_hdmi_priv *hdmi, int num_dais)
1377 {
1378         struct snd_soc_dai_driver *hdmi_dais;
1379         struct hdac_hdmi_cvt *cvt;
1380         char name[NAME_SIZE], dai_name[NAME_SIZE];
1381         int i = 0;
1382         u32 rates, bps;
1383         unsigned int rate_max = 384000, rate_min = 8000;
1384         u64 formats;
1385         int ret;
1386
1387         hdmi_dais = devm_kzalloc(&hdac->dev,
1388                         (sizeof(*hdmi_dais) * num_dais),
1389                         GFP_KERNEL);
1390         if (!hdmi_dais)
1391                 return -ENOMEM;
1392
1393         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1394                 ret = snd_hdac_query_supported_pcm(hdac, cvt->nid,
1395                                         &rates, &formats, &bps);
1396                 if (ret)
1397                         return ret;
1398
1399                 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1400                 hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
1401                                         dai_name, GFP_KERNEL);
1402
1403                 if (!hdmi_dais[i].name)
1404                         return -ENOMEM;
1405
1406                 snprintf(name, sizeof(name), "hifi%d", i+1);
1407                 hdmi_dais[i].playback.stream_name =
1408                                 devm_kstrdup(&hdac->dev, name, GFP_KERNEL);
1409                 if (!hdmi_dais[i].playback.stream_name)
1410                         return -ENOMEM;
1411
1412                 /*
1413                  * Set caps based on capability queried from the converter.
1414                  * It will be constrained runtime based on ELD queried.
1415                  */
1416                 hdmi_dais[i].playback.formats = formats;
1417                 hdmi_dais[i].playback.rates = rates;
1418                 hdmi_dais[i].playback.rate_max = rate_max;
1419                 hdmi_dais[i].playback.rate_min = rate_min;
1420                 hdmi_dais[i].playback.channels_min = 2;
1421                 hdmi_dais[i].playback.channels_max = 2;
1422                 hdmi_dais[i].ops = &hdmi_dai_ops;
1423
1424                 i++;
1425         }
1426
1427         *dais = hdmi_dais;
1428
1429         return 0;
1430 }
1431
1432 /*
1433  * Parse all nodes and store the cvt/pin nids in array
1434  * Add one time initialization for pin and cvt widgets
1435  */
1436 static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
1437                 struct snd_soc_dai_driver **dais, int *num_dais)
1438 {
1439         hda_nid_t nid;
1440         int i, num_nodes;
1441         struct hdac_device *hdac = &edev->hdac;
1442         struct hdac_hdmi_priv *hdmi = edev->private_data;
1443         int ret;
1444
1445         hdac_hdmi_skl_enable_all_pins(hdac);
1446         hdac_hdmi_skl_enable_dp12(hdac);
1447
1448         num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid);
1449         if (!nid || num_nodes <= 0) {
1450                 dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");
1451                 return -EINVAL;
1452         }
1453
1454         hdac->num_nodes = num_nodes;
1455         hdac->start_nid = nid;
1456
1457         for (i = 0; i < hdac->num_nodes; i++, nid++) {
1458                 unsigned int caps;
1459                 unsigned int type;
1460
1461                 caps = get_wcaps(hdac, nid);
1462                 type = get_wcaps_type(caps);
1463
1464                 if (!(caps & AC_WCAP_DIGITAL))
1465                         continue;
1466
1467                 switch (type) {
1468
1469                 case AC_WID_AUD_OUT:
1470                         ret = hdac_hdmi_add_cvt(edev, nid);
1471                         if (ret < 0)
1472                                 return ret;
1473                         break;
1474
1475                 case AC_WID_PIN:
1476                         ret = hdac_hdmi_add_pin(edev, nid);
1477                         if (ret < 0)
1478                                 return ret;
1479                         break;
1480                 }
1481         }
1482
1483         hdac->end_nid = nid;
1484
1485         if (!hdmi->num_pin || !hdmi->num_cvt)
1486                 return -EIO;
1487
1488         ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
1489         if (ret) {
1490                 dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
1491                                                         ret);
1492                 return ret;
1493         }
1494
1495         *num_dais = hdmi->num_cvt;
1496
1497         return hdac_hdmi_init_dai_map(edev);
1498 }
1499
1500 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
1501 {
1502         struct hdac_ext_device *edev = aptr;
1503         struct hdac_hdmi_priv *hdmi = edev->private_data;
1504         struct hdac_hdmi_pin *pin = NULL;
1505         struct hdac_hdmi_port *hport = NULL;
1506         struct snd_soc_codec *codec = edev->scodec;
1507         int i;
1508
1509         /* Don't know how this mapping is derived */
1510         hda_nid_t pin_nid = port + 0x04;
1511
1512         dev_dbg(&edev->hdac.dev, "%s: for pin:%d port=%d\n", __func__,
1513                                                         pin_nid, pipe);
1514
1515         /*
1516          * skip notification during system suspend (but not in runtime PM);
1517          * the state will be updated at resume. Also since the ELD and
1518          * connection states are updated in anyway at the end of the resume,
1519          * we can skip it when received during PM process.
1520          */
1521         if (snd_power_get_state(codec->component.card->snd_card) !=
1522                         SNDRV_CTL_POWER_D0)
1523                 return;
1524
1525         if (atomic_read(&edev->hdac.in_pm))
1526                 return;
1527
1528         list_for_each_entry(pin, &hdmi->pin_list, head) {
1529                 if (pin->nid != pin_nid)
1530                         continue;
1531
1532                 /* In case of non MST pin, pipe is -1 */
1533                 if (pipe == -1) {
1534                         pin->mst_capable = false;
1535                         /* if not MST, default is port[0] */
1536                         hport = &pin->ports[0];
1537                         goto out;
1538                 } else {
1539                         for (i = 0; i < pin->num_ports; i++) {
1540                                 pin->mst_capable = true;
1541                                 if (pin->ports[i].id == pipe) {
1542                                         hport = &pin->ports[i];
1543                                         goto out;
1544                                 }
1545                         }
1546                 }
1547         }
1548
1549 out:
1550         if (pin && hport)
1551                 hdac_hdmi_present_sense(pin, hport);
1552 }
1553
1554 static struct i915_audio_component_audio_ops aops = {
1555         .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1556 };
1557
1558 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1559                                                 int device)
1560 {
1561         struct snd_soc_pcm_runtime *rtd;
1562
1563         list_for_each_entry(rtd, &card->rtd_list, list) {
1564                 if (rtd->pcm && (rtd->pcm->device == device))
1565                         return rtd->pcm;
1566         }
1567
1568         return NULL;
1569 }
1570
1571 /* create jack pin kcontrols */
1572 static int create_fill_jack_kcontrols(struct snd_soc_card *card,
1573                                     struct hdac_ext_device *edev)
1574 {
1575         struct hdac_hdmi_pin *pin;
1576         struct snd_kcontrol_new *kc;
1577         char kc_name[NAME_SIZE], xname[NAME_SIZE];
1578         char *name;
1579         int i = 0, j;
1580         struct snd_soc_codec *codec = edev->scodec;
1581         struct hdac_hdmi_priv *hdmi = edev->private_data;
1582
1583         kc = devm_kcalloc(codec->dev, hdmi->num_ports,
1584                                 sizeof(*kc), GFP_KERNEL);
1585
1586         if (!kc)
1587                 return -ENOMEM;
1588
1589         list_for_each_entry(pin, &hdmi->pin_list, head) {
1590                 for (j = 0; j < pin->num_ports; j++) {
1591                         snprintf(xname, sizeof(xname), "hif%d-%d Jack",
1592                                                 pin->nid, pin->ports[j].id);
1593                         name = devm_kstrdup(codec->dev, xname, GFP_KERNEL);
1594                         if (!name)
1595                                 return -ENOMEM;
1596                         snprintf(kc_name, sizeof(kc_name), "%s Switch", xname);
1597                         kc[i].name = devm_kstrdup(codec->dev, kc_name,
1598                                                         GFP_KERNEL);
1599                         if (!kc[i].name)
1600                                 return -ENOMEM;
1601
1602                         kc[i].private_value = (unsigned long)name;
1603                         kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1604                         kc[i].access = 0;
1605                         kc[i].info = snd_soc_dapm_info_pin_switch;
1606                         kc[i].put = snd_soc_dapm_put_pin_switch;
1607                         kc[i].get = snd_soc_dapm_get_pin_switch;
1608                         i++;
1609                 }
1610         }
1611
1612         return snd_soc_add_card_controls(card, kc, i);
1613 }
1614
1615 int hdac_hdmi_jack_port_init(struct snd_soc_codec *codec,
1616                         struct snd_soc_dapm_context *dapm)
1617 {
1618         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1619         struct hdac_hdmi_priv *hdmi = edev->private_data;
1620         struct hdac_hdmi_pin *pin;
1621         struct snd_soc_dapm_widget *widgets;
1622         struct snd_soc_dapm_route *route;
1623         char w_name[NAME_SIZE];
1624         int i = 0, j, ret;
1625
1626         widgets = devm_kcalloc(dapm->dev, hdmi->num_ports,
1627                                 sizeof(*widgets), GFP_KERNEL);
1628
1629         if (!widgets)
1630                 return -ENOMEM;
1631
1632         route = devm_kcalloc(dapm->dev, hdmi->num_ports,
1633                                 sizeof(*route), GFP_KERNEL);
1634         if (!route)
1635                 return -ENOMEM;
1636
1637         /* create Jack DAPM widget */
1638         list_for_each_entry(pin, &hdmi->pin_list, head) {
1639                 for (j = 0; j < pin->num_ports; j++) {
1640                         snprintf(w_name, sizeof(w_name), "hif%d-%d Jack",
1641                                                 pin->nid, pin->ports[j].id);
1642
1643                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1644                                         snd_soc_dapm_spk, NULL,
1645                                         w_name, NULL, NULL, 0, NULL, 0);
1646                         if (ret < 0)
1647                                 return ret;
1648
1649                         pin->ports[j].jack_pin = widgets[i].name;
1650                         pin->ports[j].dapm = dapm;
1651
1652                         /* add to route from Jack widget to output */
1653                         hdac_hdmi_fill_route(&route[i], pin->ports[j].jack_pin,
1654                                         NULL, pin->ports[j].output_pin, NULL);
1655
1656                         i++;
1657                 }
1658         }
1659
1660         /* Add Route from Jack widget to the output widget */
1661         ret = snd_soc_dapm_new_controls(dapm, widgets, hdmi->num_ports);
1662         if (ret < 0)
1663                 return ret;
1664
1665         ret = snd_soc_dapm_add_routes(dapm, route, hdmi->num_ports);
1666         if (ret < 0)
1667                 return ret;
1668
1669         ret = snd_soc_dapm_new_widgets(dapm->card);
1670         if (ret < 0)
1671                 return ret;
1672
1673         /* Add Jack Pin switch Kcontrol */
1674         ret = create_fill_jack_kcontrols(dapm->card, edev);
1675
1676         if (ret < 0)
1677                 return ret;
1678
1679         /* default set the Jack Pin switch to OFF */
1680         list_for_each_entry(pin, &hdmi->pin_list, head) {
1681                 for (j = 0; j < pin->num_ports; j++)
1682                         snd_soc_dapm_disable_pin(pin->ports[j].dapm,
1683                                                 pin->ports[j].jack_pin);
1684         }
1685
1686         return 0;
1687 }
1688 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_port_init);
1689
1690 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device,
1691                                 struct snd_soc_jack *jack)
1692 {
1693         struct snd_soc_codec *codec = dai->codec;
1694         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1695         struct hdac_hdmi_priv *hdmi = edev->private_data;
1696         struct hdac_hdmi_pcm *pcm;
1697         struct snd_pcm *snd_pcm;
1698         int err;
1699
1700         /*
1701          * this is a new PCM device, create new pcm and
1702          * add to the pcm list
1703          */
1704         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
1705         if (!pcm)
1706                 return -ENOMEM;
1707         pcm->pcm_id = device;
1708         pcm->cvt = hdmi->dai_map[dai->id].cvt;
1709         pcm->jack_event = 0;
1710         pcm->jack = jack;
1711         mutex_init(&pcm->lock);
1712         INIT_LIST_HEAD(&pcm->port_list);
1713         snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1714         if (snd_pcm) {
1715                 err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1716                 if (err < 0) {
1717                         dev_err(&edev->hdac.dev,
1718                                 "chmap control add failed with err: %d for pcm: %d\n",
1719                                 err, device);
1720                         kfree(pcm);
1721                         return err;
1722                 }
1723         }
1724
1725         list_add_tail(&pcm->head, &hdmi->pcm_list);
1726
1727         return 0;
1728 }
1729 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1730
1731 static void hdac_hdmi_present_sense_all_pins(struct hdac_ext_device *edev,
1732                         struct hdac_hdmi_priv *hdmi, bool detect_pin_caps)
1733 {
1734         int i;
1735         struct hdac_hdmi_pin *pin;
1736
1737         list_for_each_entry(pin, &hdmi->pin_list, head) {
1738                 if (detect_pin_caps) {
1739
1740                         if (hdac_hdmi_get_port_len(edev, pin->nid)  == 0)
1741                                 pin->mst_capable = false;
1742                         else
1743                                 pin->mst_capable = true;
1744                 }
1745
1746                 for (i = 0; i < pin->num_ports; i++) {
1747                         if (!pin->mst_capable && i > 0)
1748                                 continue;
1749
1750                         hdac_hdmi_present_sense(pin, &pin->ports[i]);
1751                 }
1752         }
1753 }
1754
1755 static int hdmi_codec_probe(struct snd_soc_codec *codec)
1756 {
1757         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1758         struct hdac_hdmi_priv *hdmi = edev->private_data;
1759         struct snd_soc_dapm_context *dapm =
1760                 snd_soc_component_get_dapm(&codec->component);
1761         struct hdac_ext_link *hlink = NULL;
1762         int ret;
1763
1764         edev->scodec = codec;
1765
1766         /*
1767          * hold the ref while we probe, also no need to drop the ref on
1768          * exit, we call pm_runtime_suspend() so that will do for us
1769          */
1770         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1771         if (!hlink) {
1772                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1773                 return -EIO;
1774         }
1775
1776         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1777
1778         ret = create_fill_widget_route_map(dapm);
1779         if (ret < 0)
1780                 return ret;
1781
1782         aops.audio_ptr = edev;
1783         ret = snd_hdac_i915_register_notifier(&aops);
1784         if (ret < 0) {
1785                 dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n",
1786                                 ret);
1787                 return ret;
1788         }
1789
1790         hdac_hdmi_present_sense_all_pins(edev, hdmi, true);
1791         /* Imp: Store the card pointer in hda_codec */
1792         edev->card = dapm->card->snd_card;
1793
1794         /*
1795          * hdac_device core already sets the state to active and calls
1796          * get_noresume. So enable runtime and set the device to suspend.
1797          */
1798         pm_runtime_enable(&edev->hdac.dev);
1799         pm_runtime_put(&edev->hdac.dev);
1800         pm_runtime_suspend(&edev->hdac.dev);
1801
1802         return 0;
1803 }
1804
1805 static int hdmi_codec_remove(struct snd_soc_codec *codec)
1806 {
1807         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1808
1809         pm_runtime_disable(&edev->hdac.dev);
1810         return 0;
1811 }
1812
1813 #ifdef CONFIG_PM
1814 static int hdmi_codec_prepare(struct device *dev)
1815 {
1816         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1817         struct hdac_device *hdac = &edev->hdac;
1818
1819         pm_runtime_get_sync(&edev->hdac.dev);
1820
1821         /*
1822          * Power down afg.
1823          * codec_read is preferred over codec_write to set the power state.
1824          * This way verb is send to set the power state and response
1825          * is received. So setting power state is ensured without using loop
1826          * to read the state.
1827          */
1828         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1829                                                         AC_PWRST_D3);
1830
1831         return 0;
1832 }
1833
1834 static void hdmi_codec_complete(struct device *dev)
1835 {
1836         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1837         struct hdac_hdmi_priv *hdmi = edev->private_data;
1838         struct hdac_device *hdac = &edev->hdac;
1839
1840         /* Power up afg */
1841         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1842                                                         AC_PWRST_D0);
1843
1844         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1845         hdac_hdmi_skl_enable_dp12(&edev->hdac);
1846
1847         /*
1848          * As the ELD notify callback request is not entertained while the
1849          * device is in suspend state. Need to manually check detection of
1850          * all pins here. pin capablity change is not support, so use the
1851          * already set pin caps.
1852          */
1853         hdac_hdmi_present_sense_all_pins(edev, hdmi, false);
1854
1855         pm_runtime_put_sync(&edev->hdac.dev);
1856 }
1857 #else
1858 #define hdmi_codec_prepare NULL
1859 #define hdmi_codec_complete NULL
1860 #endif
1861
1862 static struct snd_soc_codec_driver hdmi_hda_codec = {
1863         .probe          = hdmi_codec_probe,
1864         .remove         = hdmi_codec_remove,
1865         .idle_bias_off  = true,
1866 };
1867
1868 static void hdac_hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
1869                                         unsigned char *chmap)
1870 {
1871         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1872         struct hdac_hdmi_priv *hdmi = edev->private_data;
1873         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1874
1875         memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap));
1876 }
1877
1878 static void hdac_hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
1879                                 unsigned char *chmap, int prepared)
1880 {
1881         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1882         struct hdac_hdmi_priv *hdmi = edev->private_data;
1883         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1884         struct hdac_hdmi_port *port;
1885
1886         if (list_empty(&pcm->port_list))
1887                 return;
1888
1889         mutex_lock(&pcm->lock);
1890         pcm->chmap_set = true;
1891         memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap));
1892         list_for_each_entry(port, &pcm->port_list, head)
1893                 if (prepared)
1894                         hdac_hdmi_setup_audio_infoframe(edev, pcm, port);
1895         mutex_unlock(&pcm->lock);
1896 }
1897
1898 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
1899 {
1900         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1901         struct hdac_hdmi_priv *hdmi = edev->private_data;
1902         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1903
1904         if (list_empty(&pcm->port_list))
1905                 return false;
1906
1907         return true;
1908 }
1909
1910 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
1911 {
1912         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1913         struct hdac_hdmi_priv *hdmi = edev->private_data;
1914         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1915         struct hdac_hdmi_port *port;
1916
1917         if (list_empty(&pcm->port_list))
1918                 return 0;
1919
1920         port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head);
1921
1922         if (!port)
1923                 return 0;
1924
1925         if (!port || !port->eld.eld_valid)
1926                 return 0;
1927
1928         return port->eld.info.spk_alloc;
1929 }
1930
1931 static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
1932 {
1933         struct hdac_device *codec = &edev->hdac;
1934         struct hdac_hdmi_priv *hdmi_priv;
1935         struct snd_soc_dai_driver *hdmi_dais = NULL;
1936         struct hdac_ext_link *hlink = NULL;
1937         int num_dais = 0;
1938         int ret = 0;
1939
1940         /* hold the ref while we probe */
1941         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1942         if (!hlink) {
1943                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1944                 return -EIO;
1945         }
1946
1947         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1948
1949         hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
1950         if (hdmi_priv == NULL)
1951                 return -ENOMEM;
1952
1953         edev->private_data = hdmi_priv;
1954         snd_hdac_register_chmap_ops(codec, &hdmi_priv->chmap);
1955         hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
1956         hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
1957         hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
1958         hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
1959
1960         dev_set_drvdata(&codec->dev, edev);
1961
1962         INIT_LIST_HEAD(&hdmi_priv->pin_list);
1963         INIT_LIST_HEAD(&hdmi_priv->cvt_list);
1964         INIT_LIST_HEAD(&hdmi_priv->pcm_list);
1965         mutex_init(&hdmi_priv->pin_mutex);
1966
1967         /*
1968          * Turned off in the runtime_suspend during the first explicit
1969          * pm_runtime_suspend call.
1970          */
1971         ret = snd_hdac_display_power(edev->hdac.bus, true);
1972         if (ret < 0) {
1973                 dev_err(&edev->hdac.dev,
1974                         "Cannot turn on display power on i915 err: %d\n",
1975                         ret);
1976                 return ret;
1977         }
1978
1979         ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
1980         if (ret < 0) {
1981                 dev_err(&codec->dev,
1982                         "Failed in parse and map nid with err: %d\n", ret);
1983                 return ret;
1984         }
1985
1986         /* ASoC specific initialization */
1987         ret = snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
1988                                         hdmi_dais, num_dais);
1989
1990         snd_hdac_ext_bus_link_put(edev->ebus, hlink);
1991
1992         return ret;
1993 }
1994
1995 static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
1996 {
1997         struct hdac_hdmi_priv *hdmi = edev->private_data;
1998         struct hdac_hdmi_pin *pin, *pin_next;
1999         struct hdac_hdmi_cvt *cvt, *cvt_next;
2000         struct hdac_hdmi_pcm *pcm, *pcm_next;
2001         struct hdac_hdmi_port *port;
2002         int i;
2003
2004         snd_soc_unregister_codec(&edev->hdac.dev);
2005
2006         list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
2007                 pcm->cvt = NULL;
2008                 if (list_empty(&pcm->port_list))
2009                         continue;
2010
2011                 list_for_each_entry(port, &pcm->port_list, head)
2012                         port = NULL;
2013
2014                 list_del(&pcm->head);
2015                 kfree(pcm);
2016         }
2017
2018         list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
2019                 list_del(&cvt->head);
2020                 kfree(cvt->name);
2021                 kfree(cvt);
2022         }
2023
2024         list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
2025                 for (i = 0; i < pin->num_ports; i++)
2026                         pin->ports[i].pin = NULL;
2027                 kfree(pin->ports);
2028                 list_del(&pin->head);
2029                 kfree(pin);
2030         }
2031
2032         return 0;
2033 }
2034
2035 #ifdef CONFIG_PM
2036 static int hdac_hdmi_runtime_suspend(struct device *dev)
2037 {
2038         struct hdac_ext_device *edev = to_hda_ext_device(dev);
2039         struct hdac_device *hdac = &edev->hdac;
2040         struct hdac_bus *bus = hdac->bus;
2041         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
2042         struct hdac_ext_link *hlink = NULL;
2043         int err;
2044
2045         dev_dbg(dev, "Enter: %s\n", __func__);
2046
2047         /* controller may not have been initialized for the first time */
2048         if (!bus)
2049                 return 0;
2050
2051         /*
2052          * Power down afg.
2053          * codec_read is preferred over codec_write to set the power state.
2054          * This way verb is send to set the power state and response
2055          * is received. So setting power state is ensured without using loop
2056          * to read the state.
2057          */
2058         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
2059                                                         AC_PWRST_D3);
2060         err = snd_hdac_display_power(bus, false);
2061         if (err < 0) {
2062                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
2063                 return err;
2064         }
2065
2066         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
2067         if (!hlink) {
2068                 dev_err(dev, "hdac link not found\n");
2069                 return -EIO;
2070         }
2071
2072         snd_hdac_ext_bus_link_put(ebus, hlink);
2073
2074         return 0;
2075 }
2076
2077 static int hdac_hdmi_runtime_resume(struct device *dev)
2078 {
2079         struct hdac_ext_device *edev = to_hda_ext_device(dev);
2080         struct hdac_device *hdac = &edev->hdac;
2081         struct hdac_bus *bus = hdac->bus;
2082         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
2083         struct hdac_ext_link *hlink = NULL;
2084         int err;
2085
2086         dev_dbg(dev, "Enter: %s\n", __func__);
2087
2088         /* controller may not have been initialized for the first time */
2089         if (!bus)
2090                 return 0;
2091
2092         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
2093         if (!hlink) {
2094                 dev_err(dev, "hdac link not found\n");
2095                 return -EIO;
2096         }
2097
2098         snd_hdac_ext_bus_link_get(ebus, hlink);
2099
2100         err = snd_hdac_display_power(bus, true);
2101         if (err < 0) {
2102                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
2103                 return err;
2104         }
2105
2106         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
2107         hdac_hdmi_skl_enable_dp12(&edev->hdac);
2108
2109         /* Power up afg */
2110         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
2111                                                         AC_PWRST_D0);
2112
2113         return 0;
2114 }
2115 #else
2116 #define hdac_hdmi_runtime_suspend NULL
2117 #define hdac_hdmi_runtime_resume NULL
2118 #endif
2119
2120 static const struct dev_pm_ops hdac_hdmi_pm = {
2121         SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
2122         .prepare = hdmi_codec_prepare,
2123         .complete = hdmi_codec_complete,
2124 };
2125
2126 static const struct hda_device_id hdmi_list[] = {
2127         HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
2128         HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
2129         HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
2130         HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI", 0),
2131         {}
2132 };
2133
2134 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
2135
2136 static struct hdac_ext_driver hdmi_driver = {
2137         . hdac = {
2138                 .driver = {
2139                         .name   = "HDMI HDA Codec",
2140                         .pm = &hdac_hdmi_pm,
2141                 },
2142                 .id_table       = hdmi_list,
2143         },
2144         .probe          = hdac_hdmi_dev_probe,
2145         .remove         = hdac_hdmi_dev_remove,
2146 };
2147
2148 static int __init hdmi_init(void)
2149 {
2150         return snd_hda_ext_driver_register(&hdmi_driver);
2151 }
2152
2153 static void __exit hdmi_exit(void)
2154 {
2155         snd_hda_ext_driver_unregister(&hdmi_driver);
2156 }
2157
2158 module_init(hdmi_init);
2159 module_exit(hdmi_exit);
2160
2161 MODULE_LICENSE("GPL v2");
2162 MODULE_DESCRIPTION("HDMI HD codec");
2163 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
2164 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");