1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms 4 * 5 * Copyright (C) 2014-2015 Intel Corp 6 * Author: Samreen Nilofer <samreen.nilofer@intel.com> 7 * Subhransu S. Prusty <subhransu.s.prusty@intel.com> 8 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 9 * 10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 11 */ 12 13 #include <linux/cleanup.h> 14 #include <linux/init.h> 15 #include <linux/delay.h> 16 #include <linux/module.h> 17 #include <linux/pm_runtime.h> 18 #include <linux/hdmi.h> 19 #include <drm/drm_edid.h> 20 #include <drm/drm_eld.h> 21 #include <sound/pcm_params.h> 22 #include <sound/jack.h> 23 #include <sound/soc.h> 24 #include <sound/hdaudio_ext.h> 25 #include <sound/hda_i915.h> 26 #include <sound/pcm_drm_eld.h> 27 #include <sound/hda_chmap.h> 28 29 #define NAME_SIZE 32 30 31 #define AMP_OUT_MUTE 0xb080 32 #define AMP_OUT_UNMUTE 0xb000 33 #define PIN_OUT (AC_PINCTL_OUT_EN) 34 35 #define HDA_MAX_CONNECTIONS 32 36 37 #define HDA_MAX_CVTS 3 38 #define HDA_MAX_PORTS 3 39 40 #define ELD_MAX_SIZE 256 41 #define ELD_FIXED_BYTES 20 42 43 #define ELD_VER_CEA_861D 2 44 #define ELD_VER_PARTIAL 31 45 #define ELD_MAX_MNL 16 46 47 struct hdac_hdmi_cvt_params { 48 unsigned int channels_min; 49 unsigned int channels_max; 50 u32 rates; 51 u64 formats; 52 unsigned int maxbps; 53 }; 54 55 struct hdac_hdmi_cvt { 56 struct list_head head; 57 hda_nid_t nid; 58 const char *name; 59 struct hdac_hdmi_cvt_params params; 60 }; 61 62 /* Currently only spk_alloc, more to be added */ 63 struct hdac_hdmi_parsed_eld { 64 u8 spk_alloc; 65 }; 66 67 struct hdac_hdmi_eld { 68 bool monitor_present; 69 bool eld_valid; 70 int eld_size; 71 char eld_buffer[ELD_MAX_SIZE]; 72 struct hdac_hdmi_parsed_eld info; 73 }; 74 75 struct hdac_hdmi_pin { 76 struct list_head head; 77 hda_nid_t nid; 78 bool mst_capable; 79 struct hdac_hdmi_port *ports; 80 int num_ports; 81 struct hdac_device *hdev; 82 }; 83 84 struct hdac_hdmi_port { 85 struct list_head head; 86 int id; 87 struct hdac_hdmi_pin *pin; 88 int num_mux_nids; 89 hda_nid_t mux_nids[HDA_MAX_CONNECTIONS]; 90 struct hdac_hdmi_eld eld; 91 const char *jack_pin; 92 bool is_connect; 93 struct snd_soc_dapm_context *dapm; 94 const char *output_pin; 95 struct work_struct dapm_work; 96 }; 97 98 struct hdac_hdmi_pcm { 99 struct list_head head; 100 int pcm_id; 101 struct list_head port_list; 102 struct hdac_hdmi_cvt *cvt; 103 struct snd_soc_jack *jack; 104 int stream_tag; 105 int channels; 106 int format; 107 bool chmap_set; 108 unsigned char chmap[8]; /* ALSA API channel-map */ 109 struct mutex lock; 110 int jack_event; 111 struct snd_kcontrol *eld_ctl; 112 }; 113 114 struct hdac_hdmi_dai_port_map { 115 int dai_id; 116 struct hdac_hdmi_port *port; 117 struct hdac_hdmi_cvt *cvt; 118 }; 119 120 struct hdac_hdmi_drv_data { 121 unsigned int vendor_nid; 122 }; 123 124 struct hdac_hdmi_priv { 125 struct hdac_device *hdev; 126 struct snd_soc_component *component; 127 struct snd_card *card; 128 struct hdac_hdmi_dai_port_map dai_map[HDA_MAX_CVTS]; 129 struct list_head pin_list; 130 struct list_head cvt_list; 131 struct list_head pcm_list; 132 int num_pin; 133 int num_cvt; 134 int num_ports; 135 struct mutex pin_mutex; 136 struct hdac_chmap chmap; 137 struct hdac_hdmi_drv_data *drv_data; 138 struct snd_soc_dai_driver *dai_drv; 139 }; 140 141 #define hdev_to_hdmi_priv(_hdev) dev_get_drvdata(&(_hdev)->dev) 142 143 static struct hdac_hdmi_pcm * 144 hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi, 145 struct hdac_hdmi_cvt *cvt) 146 { 147 struct hdac_hdmi_pcm *pcm; 148 149 list_for_each_entry(pcm, &hdmi->pcm_list, head) { 150 if (pcm->cvt == cvt) 151 return pcm; 152 } 153 154 return NULL; 155 } 156 157 static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm, 158 struct hdac_hdmi_port *port, bool is_connect) 159 { 160 struct hdac_device *hdev = port->pin->hdev; 161 162 port->is_connect = is_connect; 163 if (is_connect) { 164 /* 165 * Report Jack connect event when a device is connected 166 * for the first time where same PCM is attached to multiple 167 * ports. 168 */ 169 if (pcm->jack_event == 0) { 170 dev_dbg(&hdev->dev, 171 "jack report for pcm=%d\n", 172 pcm->pcm_id); 173 snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT, 174 SND_JACK_AVOUT); 175 } 176 pcm->jack_event++; 177 } else { 178 /* 179 * Report Jack disconnect event when a device is disconnected 180 * is the only last connected device when same PCM is attached 181 * to multiple ports. 182 */ 183 if (pcm->jack_event == 1) 184 snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT); 185 if (pcm->jack_event > 0) 186 pcm->jack_event--; 187 } 188 } 189 190 static void hdac_hdmi_port_dapm_update(struct hdac_hdmi_port *port) 191 { 192 if (port->is_connect) 193 snd_soc_dapm_enable_pin(port->dapm, port->jack_pin); 194 else 195 snd_soc_dapm_disable_pin(port->dapm, port->jack_pin); 196 snd_soc_dapm_sync(port->dapm); 197 } 198 199 static void hdac_hdmi_jack_dapm_work(struct work_struct *work) 200 { 201 struct hdac_hdmi_port *port; 202 203 port = container_of(work, struct hdac_hdmi_port, dapm_work); 204 hdac_hdmi_port_dapm_update(port); 205 } 206 207 static void hdac_hdmi_jack_report_sync(struct hdac_hdmi_pcm *pcm, 208 struct hdac_hdmi_port *port, bool is_connect) 209 { 210 hdac_hdmi_jack_report(pcm, port, is_connect); 211 hdac_hdmi_port_dapm_update(port); 212 } 213 214 /* MST supported verbs */ 215 /* 216 * Get the no devices that can be connected to a port on the Pin widget. 217 */ 218 static int hdac_hdmi_get_port_len(struct hdac_device *hdev, hda_nid_t nid) 219 { 220 unsigned int caps; 221 unsigned int type, param; 222 223 caps = snd_hdac_get_wcaps(hdev, nid); 224 type = snd_hdac_get_wcaps_type(caps); 225 226 if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN)) 227 return 0; 228 229 param = snd_hdac_read_parm_uncached(hdev, nid, AC_PAR_DEVLIST_LEN); 230 if (param == -1) 231 return param; 232 233 return param & AC_DEV_LIST_LEN_MASK; 234 } 235 236 /* 237 * Get the port entry select on the pin. Return the port entry 238 * id selected on the pin. Return 0 means the first port entry 239 * is selected or MST is not supported. 240 */ 241 static int hdac_hdmi_port_select_get(struct hdac_device *hdev, 242 struct hdac_hdmi_port *port) 243 { 244 return snd_hdac_codec_read(hdev, port->pin->nid, 245 0, AC_VERB_GET_DEVICE_SEL, 0); 246 } 247 248 /* 249 * Sets the selected port entry for the configuring Pin widget verb. 250 * returns error if port set is not equal to port get otherwise success 251 */ 252 static int hdac_hdmi_port_select_set(struct hdac_device *hdev, 253 struct hdac_hdmi_port *port) 254 { 255 int num_ports; 256 257 if (!port->pin->mst_capable) 258 return 0; 259 260 /* AC_PAR_DEVLIST_LEN is 0 based. */ 261 num_ports = hdac_hdmi_get_port_len(hdev, port->pin->nid); 262 if (num_ports < 0) 263 return -EIO; 264 /* 265 * Device List Length is a 0 based integer value indicating the 266 * number of sink device that a MST Pin Widget can support. 267 */ 268 if (num_ports + 1 < port->id) 269 return 0; 270 271 snd_hdac_codec_write(hdev, port->pin->nid, 0, 272 AC_VERB_SET_DEVICE_SEL, port->id); 273 274 if (port->id != hdac_hdmi_port_select_get(hdev, port)) 275 return -EIO; 276 277 dev_dbg(&hdev->dev, "Selected the port=%d\n", port->id); 278 279 return 0; 280 } 281 282 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi, 283 int pcm_idx) 284 { 285 struct hdac_hdmi_pcm *pcm; 286 287 list_for_each_entry(pcm, &hdmi->pcm_list, head) { 288 if (pcm->pcm_id == pcm_idx) 289 return pcm; 290 } 291 292 return NULL; 293 } 294 295 static unsigned int sad_format(const u8 *sad) 296 { 297 return ((sad[0] >> 0x3) & 0x1f); 298 } 299 300 static unsigned int sad_sample_bits_lpcm(const u8 *sad) 301 { 302 return (sad[2] & 7); 303 } 304 305 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime, 306 void *eld) 307 { 308 u64 formats = SNDRV_PCM_FMTBIT_S16; 309 int i; 310 const u8 *sad, *eld_buf = eld; 311 312 sad = drm_eld_sad(eld_buf); 313 if (!sad) 314 goto format_constraint; 315 316 for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) { 317 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */ 318 319 /* 320 * the controller support 20 and 24 bits in 32 bit 321 * container so we set S32 322 */ 323 if (sad_sample_bits_lpcm(sad) & 0x6) 324 formats |= SNDRV_PCM_FMTBIT_S32; 325 } 326 } 327 328 format_constraint: 329 return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT, 330 formats); 331 332 } 333 334 static void 335 hdac_hdmi_set_dip_index(struct hdac_device *hdev, hda_nid_t pin_nid, 336 int packet_index, int byte_index) 337 { 338 int val; 339 340 val = (packet_index << 5) | (byte_index & 0x1f); 341 snd_hdac_codec_write(hdev, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val); 342 } 343 344 struct dp_audio_infoframe { 345 u8 type; /* 0x84 */ 346 u8 len; /* 0x1b */ 347 u8 ver; /* 0x11 << 2 */ 348 349 u8 CC02_CT47; /* match with HDMI infoframe from this on */ 350 u8 SS01_SF24; 351 u8 CXT04; 352 u8 CA; 353 u8 LFEPBL01_LSV36_DM_INH7; 354 }; 355 356 static int hdac_hdmi_setup_audio_infoframe(struct hdac_device *hdev, 357 struct hdac_hdmi_pcm *pcm, struct hdac_hdmi_port *port) 358 { 359 uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE]; 360 struct hdmi_audio_infoframe frame; 361 struct hdac_hdmi_pin *pin = port->pin; 362 struct dp_audio_infoframe dp_ai; 363 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 364 struct hdac_hdmi_cvt *cvt = pcm->cvt; 365 u8 *dip; 366 int ret; 367 int i; 368 const u8 *eld_buf; 369 u8 conn_type; 370 int channels, ca; 371 372 ca = snd_hdac_channel_allocation(hdev, port->eld.info.spk_alloc, 373 pcm->channels, pcm->chmap_set, true, pcm->chmap); 374 375 channels = snd_hdac_get_active_channels(ca); 376 hdmi->chmap.ops.set_channel_count(hdev, cvt->nid, channels); 377 378 snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca, 379 pcm->channels, pcm->chmap, pcm->chmap_set); 380 381 eld_buf = port->eld.eld_buffer; 382 conn_type = drm_eld_get_conn_type(eld_buf); 383 384 switch (conn_type) { 385 case DRM_ELD_CONN_TYPE_HDMI: 386 hdmi_audio_infoframe_init(&frame); 387 388 frame.channels = channels; 389 frame.channel_allocation = ca; 390 391 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer)); 392 if (ret < 0) 393 return ret; 394 395 break; 396 397 case DRM_ELD_CONN_TYPE_DP: 398 memset(&dp_ai, 0, sizeof(dp_ai)); 399 dp_ai.type = 0x84; 400 dp_ai.len = 0x1b; 401 dp_ai.ver = 0x11 << 2; 402 dp_ai.CC02_CT47 = channels - 1; 403 dp_ai.CA = ca; 404 405 dip = (u8 *)&dp_ai; 406 break; 407 408 default: 409 dev_err(&hdev->dev, "Invalid connection type: %d\n", conn_type); 410 return -EIO; 411 } 412 413 /* stop infoframe transmission */ 414 hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0); 415 snd_hdac_codec_write(hdev, pin->nid, 0, 416 AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE); 417 418 419 /* Fill infoframe. Index auto-incremented */ 420 hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0); 421 if (conn_type == DRM_ELD_CONN_TYPE_HDMI) { 422 for (i = 0; i < sizeof(buffer); i++) 423 snd_hdac_codec_write(hdev, pin->nid, 0, 424 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]); 425 } else { 426 for (i = 0; i < sizeof(dp_ai); i++) 427 snd_hdac_codec_write(hdev, pin->nid, 0, 428 AC_VERB_SET_HDMI_DIP_DATA, dip[i]); 429 } 430 431 /* Start infoframe */ 432 hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0); 433 snd_hdac_codec_write(hdev, pin->nid, 0, 434 AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST); 435 436 return 0; 437 } 438 439 static int hdac_hdmi_set_stream(struct snd_soc_dai *dai, 440 void *stream, int direction) 441 { 442 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); 443 struct hdac_device *hdev = hdmi->hdev; 444 struct hdac_hdmi_dai_port_map *dai_map; 445 struct hdac_hdmi_pcm *pcm; 446 struct hdac_stream *hstream; 447 448 if (!stream) 449 return -EINVAL; 450 451 hstream = (struct hdac_stream *)stream; 452 453 dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, hstream->stream_tag); 454 455 dai_map = &hdmi->dai_map[dai->id]; 456 457 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt); 458 459 if (pcm) 460 pcm->stream_tag = (hstream->stream_tag << 4); 461 462 return 0; 463 } 464 465 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream, 466 struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai) 467 { 468 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); 469 struct hdac_hdmi_dai_port_map *dai_map; 470 struct hdac_hdmi_pcm *pcm; 471 unsigned int bits; 472 int format; 473 474 dai_map = &hdmi->dai_map[dai->id]; 475 476 bits = snd_hdac_stream_format_bits(params_format(hparams), SNDRV_PCM_SUBFORMAT_STD, 477 dai->driver->playback.sig_bits); 478 format = snd_hdac_stream_format(params_channels(hparams), bits, params_rate(hparams)); 479 480 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt); 481 if (!pcm) 482 return -EIO; 483 484 pcm->format = format; 485 pcm->channels = params_channels(hparams); 486 487 return 0; 488 } 489 490 static int hdac_hdmi_query_port_connlist(struct hdac_device *hdev, 491 struct hdac_hdmi_pin *pin, 492 struct hdac_hdmi_port *port) 493 { 494 if (!(snd_hdac_get_wcaps(hdev, pin->nid) & AC_WCAP_CONN_LIST)) { 495 dev_warn(&hdev->dev, 496 "HDMI: pin %d wcaps %#x does not support connection list\n", 497 pin->nid, snd_hdac_get_wcaps(hdev, pin->nid)); 498 return -EINVAL; 499 } 500 501 if (hdac_hdmi_port_select_set(hdev, port) < 0) 502 return -EIO; 503 504 port->num_mux_nids = snd_hdac_get_connections(hdev, pin->nid, 505 port->mux_nids, HDA_MAX_CONNECTIONS); 506 if (port->num_mux_nids == 0) 507 dev_warn(&hdev->dev, 508 "No connections found for pin:port %d:%d\n", 509 pin->nid, port->id); 510 511 dev_dbg(&hdev->dev, "num_mux_nids %d for pin:port %d:%d\n", 512 port->num_mux_nids, pin->nid, port->id); 513 514 return port->num_mux_nids; 515 } 516 517 /* 518 * Query pcm list and return port to which stream is routed. 519 * 520 * Also query connection list of the pin, to validate the cvt to port map. 521 * 522 * Same stream rendering to multiple ports simultaneously can be done 523 * possibly, but not supported for now in driver. So return the first port 524 * connected. 525 */ 526 static struct hdac_hdmi_port *hdac_hdmi_get_port_from_cvt( 527 struct hdac_device *hdev, 528 struct hdac_hdmi_priv *hdmi, 529 struct hdac_hdmi_cvt *cvt) 530 { 531 struct hdac_hdmi_pcm *pcm; 532 struct hdac_hdmi_port *port; 533 int ret, i; 534 535 list_for_each_entry(pcm, &hdmi->pcm_list, head) { 536 if (pcm->cvt == cvt) { 537 if (list_empty(&pcm->port_list)) 538 continue; 539 540 list_for_each_entry(port, &pcm->port_list, head) { 541 scoped_guard(mutex, &pcm->lock) { 542 ret = hdac_hdmi_query_port_connlist(hdev, 543 port->pin, 544 port); 545 } 546 if (ret < 0) 547 continue; 548 549 for (i = 0; i < port->num_mux_nids; i++) { 550 if (port->mux_nids[i] == cvt->nid && 551 port->eld.monitor_present && 552 port->eld.eld_valid) 553 return port; 554 } 555 } 556 } 557 } 558 559 return NULL; 560 } 561 562 /* 563 * Go through all converters and ensure connection is set to 564 * the correct pin as set via kcontrols. 565 */ 566 static void hdac_hdmi_verify_connect_sel_all_pins(struct hdac_device *hdev) 567 { 568 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 569 struct hdac_hdmi_port *port; 570 struct hdac_hdmi_cvt *cvt; 571 int cvt_idx = 0; 572 573 list_for_each_entry(cvt, &hdmi->cvt_list, head) { 574 port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt); 575 if (port && port->pin) { 576 snd_hdac_codec_write(hdev, port->pin->nid, 0, 577 AC_VERB_SET_CONNECT_SEL, cvt_idx); 578 dev_dbg(&hdev->dev, "%s: %s set connect %d -> %d\n", 579 __func__, cvt->name, port->pin->nid, cvt_idx); 580 } 581 ++cvt_idx; 582 } 583 } 584 585 /* 586 * This tries to get a valid pin and set the HW constraints based on the 587 * ELD. Even if a valid pin is not found return success so that device open 588 * doesn't fail. 589 */ 590 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream, 591 struct snd_soc_dai *dai) 592 { 593 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); 594 struct hdac_device *hdev = hdmi->hdev; 595 struct hdac_hdmi_dai_port_map *dai_map; 596 struct hdac_hdmi_cvt *cvt; 597 struct hdac_hdmi_port *port; 598 int ret; 599 600 dai_map = &hdmi->dai_map[dai->id]; 601 602 cvt = dai_map->cvt; 603 port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt); 604 605 /* 606 * To make PA and other userland happy. 607 * userland scans devices so returning error does not help. 608 */ 609 if (!port) 610 return 0; 611 if ((!port->eld.monitor_present) || 612 (!port->eld.eld_valid)) { 613 614 dev_warn(&hdev->dev, 615 "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n", 616 port->eld.monitor_present, port->eld.eld_valid, 617 port->pin->nid, port->id); 618 619 return 0; 620 } 621 622 dai_map->port = port; 623 624 ret = hdac_hdmi_eld_limit_formats(substream->runtime, 625 port->eld.eld_buffer); 626 if (ret < 0) 627 return ret; 628 629 return snd_pcm_hw_constraint_eld(substream->runtime, 630 port->eld.eld_buffer); 631 } 632 633 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream, 634 struct snd_soc_dai *dai) 635 { 636 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai); 637 struct hdac_hdmi_dai_port_map *dai_map; 638 struct hdac_hdmi_pcm *pcm; 639 640 dai_map = &hdmi->dai_map[dai->id]; 641 642 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt); 643 644 if (pcm) { 645 scoped_guard(mutex, &pcm->lock) { 646 pcm->chmap_set = false; 647 memset(pcm->chmap, 0, sizeof(pcm->chmap)); 648 pcm->channels = 0; 649 } 650 } 651 652 if (dai_map->port) 653 dai_map->port = NULL; 654 } 655 656 static int 657 hdac_hdmi_query_cvt_params(struct hdac_device *hdev, struct hdac_hdmi_cvt *cvt) 658 { 659 unsigned int chans; 660 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 661 int err; 662 663 chans = snd_hdac_get_wcaps(hdev, cvt->nid); 664 chans = snd_hdac_get_wcaps_channels(chans); 665 666 cvt->params.channels_min = 2; 667 668 cvt->params.channels_max = chans; 669 if (chans > hdmi->chmap.channels_max) 670 hdmi->chmap.channels_max = chans; 671 672 err = snd_hdac_query_supported_pcm(hdev, cvt->nid, 673 &cvt->params.rates, 674 &cvt->params.formats, 675 NULL, 676 &cvt->params.maxbps); 677 if (err < 0) 678 dev_err(&hdev->dev, 679 "Failed to query pcm params for nid %d: %d\n", 680 cvt->nid, err); 681 682 return err; 683 } 684 685 static int hdac_hdmi_fill_widget_info(struct device *dev, 686 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id, 687 void *priv, const char *wname, const char *stream, 688 struct snd_kcontrol_new *wc, int numkc, 689 int (*event)(struct snd_soc_dapm_widget *, 690 struct snd_kcontrol *, int), unsigned short event_flags) 691 { 692 w->id = id; 693 w->name = devm_kstrdup(dev, wname, GFP_KERNEL); 694 if (!w->name) 695 return -ENOMEM; 696 697 w->sname = stream; 698 w->reg = SND_SOC_NOPM; 699 w->shift = 0; 700 w->kcontrol_news = wc; 701 w->num_kcontrols = numkc; 702 w->priv = priv; 703 w->event = event; 704 w->event_flags = event_flags; 705 706 return 0; 707 } 708 709 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route, 710 const char *sink, const char *control, const char *src, 711 int (*handler)(struct snd_soc_dapm_widget *src, 712 struct snd_soc_dapm_widget *sink)) 713 { 714 route->sink = sink; 715 route->source = src; 716 route->control = control; 717 route->connected = handler; 718 } 719 720 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_device *hdev, 721 struct hdac_hdmi_port *port) 722 { 723 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 724 struct hdac_hdmi_pcm *pcm; 725 struct hdac_hdmi_port *p; 726 727 list_for_each_entry(pcm, &hdmi->pcm_list, head) { 728 if (list_empty(&pcm->port_list)) 729 continue; 730 731 list_for_each_entry(p, &pcm->port_list, head) { 732 if (p->id == port->id && port->pin == p->pin) 733 return pcm; 734 } 735 } 736 737 return NULL; 738 } 739 740 static void hdac_hdmi_set_power_state(struct hdac_device *hdev, 741 hda_nid_t nid, unsigned int pwr_state) 742 { 743 int count; 744 unsigned int state; 745 746 if (snd_hdac_get_wcaps(hdev, nid) & AC_WCAP_POWER) { 747 if (!snd_hdac_check_power_state(hdev, nid, pwr_state)) { 748 for (count = 0; count < 10; count++) { 749 snd_hdac_codec_read(hdev, nid, 0, 750 AC_VERB_SET_POWER_STATE, 751 pwr_state); 752 state = snd_hdac_sync_power_state(hdev, 753 nid, pwr_state); 754 if (!(state & AC_PWRST_ERROR)) 755 break; 756 } 757 } 758 } 759 } 760 761 static void hdac_hdmi_set_amp(struct hdac_device *hdev, 762 hda_nid_t nid, int val) 763 { 764 if (snd_hdac_get_wcaps(hdev, nid) & AC_WCAP_OUT_AMP) 765 snd_hdac_codec_write(hdev, nid, 0, 766 AC_VERB_SET_AMP_GAIN_MUTE, val); 767 } 768 769 770 static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w, 771 struct snd_kcontrol *kc, int event) 772 { 773 struct hdac_hdmi_port *port = w->priv; 774 struct device *dev = snd_soc_dapm_to_dev(w->dapm); 775 struct hdac_device *hdev = dev_to_hdac_dev(dev); 776 struct hdac_hdmi_pcm *pcm; 777 778 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n", 779 __func__, w->name, event); 780 781 pcm = hdac_hdmi_get_pcm(hdev, port); 782 if (!pcm) 783 return -EIO; 784 785 /* set the device if pin is mst_capable */ 786 if (hdac_hdmi_port_select_set(hdev, port) < 0) 787 return -EIO; 788 789 switch (event) { 790 case SND_SOC_DAPM_PRE_PMU: 791 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D0); 792 793 /* Enable out path for this pin widget */ 794 snd_hdac_codec_write(hdev, port->pin->nid, 0, 795 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT); 796 797 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_UNMUTE); 798 799 return hdac_hdmi_setup_audio_infoframe(hdev, pcm, port); 800 801 case SND_SOC_DAPM_POST_PMD: 802 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_MUTE); 803 804 /* Disable out path for this pin widget */ 805 snd_hdac_codec_write(hdev, port->pin->nid, 0, 806 AC_VERB_SET_PIN_WIDGET_CONTROL, 0); 807 808 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D3); 809 break; 810 811 } 812 813 return 0; 814 } 815 816 static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w, 817 struct snd_kcontrol *kc, int event) 818 { 819 struct hdac_hdmi_cvt *cvt = w->priv; 820 struct device *dev = snd_soc_dapm_to_dev(w->dapm); 821 struct hdac_device *hdev = dev_to_hdac_dev(dev); 822 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 823 struct hdac_hdmi_pcm *pcm; 824 825 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n", 826 __func__, w->name, event); 827 828 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt); 829 if (!pcm) 830 return -EIO; 831 832 switch (event) { 833 case SND_SOC_DAPM_PRE_PMU: 834 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D0); 835 836 /* Enable transmission */ 837 snd_hdac_codec_write(hdev, cvt->nid, 0, 838 AC_VERB_SET_DIGI_CONVERT_1, 1); 839 840 /* Category Code (CC) to zero */ 841 snd_hdac_codec_write(hdev, cvt->nid, 0, 842 AC_VERB_SET_DIGI_CONVERT_2, 0); 843 844 snd_hdac_codec_write(hdev, cvt->nid, 0, 845 AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag); 846 snd_hdac_codec_write(hdev, cvt->nid, 0, 847 AC_VERB_SET_STREAM_FORMAT, pcm->format); 848 849 /* 850 * The connection indices are shared by all converters and 851 * may interfere with each other. Ensure correct 852 * routing for all converters at stream start. 853 */ 854 hdac_hdmi_verify_connect_sel_all_pins(hdev); 855 856 break; 857 858 case SND_SOC_DAPM_POST_PMD: 859 snd_hdac_codec_write(hdev, cvt->nid, 0, 860 AC_VERB_SET_CHANNEL_STREAMID, 0); 861 snd_hdac_codec_write(hdev, cvt->nid, 0, 862 AC_VERB_SET_STREAM_FORMAT, 0); 863 864 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D3); 865 break; 866 867 } 868 869 return 0; 870 } 871 872 static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w, 873 struct snd_kcontrol *kc, int event) 874 { 875 struct hdac_hdmi_port *port = w->priv; 876 struct device *dev = snd_soc_dapm_to_dev(w->dapm); 877 struct hdac_device *hdev = dev_to_hdac_dev(dev); 878 int mux_idx; 879 880 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n", 881 __func__, w->name, event); 882 883 if (!kc) 884 kc = w->kcontrols[0]; 885 886 mux_idx = snd_soc_dapm_kcontrol_get_value(kc); 887 888 /* set the device if pin is mst_capable */ 889 if (hdac_hdmi_port_select_set(hdev, port) < 0) 890 return -EIO; 891 892 if (mux_idx > 0) { 893 snd_hdac_codec_write(hdev, port->pin->nid, 0, 894 AC_VERB_SET_CONNECT_SEL, (mux_idx - 1)); 895 } 896 897 return 0; 898 } 899 900 /* 901 * Based on user selection, map the PINs with the PCMs. 902 */ 903 static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol, 904 struct snd_ctl_elem_value *ucontrol) 905 { 906 int ret; 907 struct hdac_hdmi_port *p, *p_next; 908 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; 909 struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_to_widget(kcontrol); 910 struct snd_soc_dapm_context *dapm = w->dapm; 911 struct device *dev = snd_soc_dapm_to_dev(dapm); 912 struct hdac_hdmi_port *port = w->priv; 913 struct hdac_device *hdev = dev_to_hdac_dev(dev); 914 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 915 struct hdac_hdmi_pcm *pcm; 916 const char *cvt_name; 917 918 ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol); 919 if (ret < 0) 920 return ret; 921 922 cvt_name = e->texts[ucontrol->value.enumerated.item[0]]; 923 924 if (port == NULL) 925 return -EINVAL; 926 927 guard(mutex)(&hdmi->pin_mutex); 928 list_for_each_entry(pcm, &hdmi->pcm_list, head) { 929 if (list_empty(&pcm->port_list)) 930 continue; 931 932 list_for_each_entry_safe(p, p_next, &pcm->port_list, head) { 933 if (p == port && p->id == port->id && 934 p->pin == port->pin) { 935 hdac_hdmi_jack_report_sync(pcm, port, false); 936 list_del(&p->head); 937 } 938 } 939 } 940 941 /* 942 * Jack status is not reported during device probe as the 943 * PCMs are not registered by then. So report it here. 944 */ 945 list_for_each_entry(pcm, &hdmi->pcm_list, head) { 946 if (!strcmp(cvt_name, pcm->cvt->name)) { 947 list_add_tail(&port->head, &pcm->port_list); 948 if (port->eld.monitor_present && port->eld.eld_valid) { 949 hdac_hdmi_jack_report_sync(pcm, port, true); 950 return ret; 951 } 952 } 953 } 954 955 return ret; 956 } 957 958 /* 959 * Ideally the Mux inputs should be based on the num_muxs enumerated, but 960 * the display driver seem to be programming the connection list for the pin 961 * widget runtime. 962 * 963 * So programming all the possible inputs for the mux, the user has to take 964 * care of selecting the right one and leaving all other inputs selected to 965 * "NONE" 966 */ 967 static int hdac_hdmi_create_pin_port_muxs(struct hdac_device *hdev, 968 struct hdac_hdmi_port *port, 969 struct snd_soc_dapm_widget *widget, 970 const char *widget_name) 971 { 972 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 973 struct hdac_hdmi_pin *pin = port->pin; 974 struct snd_kcontrol_new *kc; 975 struct hdac_hdmi_cvt *cvt; 976 struct soc_enum *se; 977 char kc_name[NAME_SIZE]; 978 char mux_items[NAME_SIZE]; 979 /* To hold inputs to the Pin mux */ 980 char *items[HDA_MAX_CONNECTIONS]; 981 int i = 0; 982 int num_items = hdmi->num_cvt + 1; 983 984 kc = devm_kzalloc(&hdev->dev, sizeof(*kc), GFP_KERNEL); 985 if (!kc) 986 return -ENOMEM; 987 988 se = devm_kzalloc(&hdev->dev, sizeof(*se), GFP_KERNEL); 989 if (!se) 990 return -ENOMEM; 991 992 snprintf(kc_name, NAME_SIZE, "Pin %d port %d Input", 993 pin->nid, port->id); 994 kc->name = devm_kstrdup(&hdev->dev, kc_name, GFP_KERNEL); 995 if (!kc->name) 996 return -ENOMEM; 997 998 kc->private_value = (long)se; 999 kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER; 1000 kc->access = 0; 1001 kc->info = snd_soc_info_enum_double; 1002 kc->put = hdac_hdmi_set_pin_port_mux; 1003 kc->get = snd_soc_dapm_get_enum_double; 1004 1005 se->reg = SND_SOC_NOPM; 1006 1007 /* enum texts: ["NONE", "cvt #", "cvt #", ...] */ 1008 se->items = num_items; 1009 se->mask = roundup_pow_of_two(se->items) - 1; 1010 1011 sprintf(mux_items, "NONE"); 1012 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL); 1013 if (!items[i]) 1014 return -ENOMEM; 1015 1016 list_for_each_entry(cvt, &hdmi->cvt_list, head) { 1017 i++; 1018 sprintf(mux_items, "cvt %d", cvt->nid); 1019 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL); 1020 if (!items[i]) 1021 return -ENOMEM; 1022 } 1023 1024 se->texts = devm_kmemdup_array(&hdev->dev, items, num_items, sizeof(items[0]), GFP_KERNEL); 1025 if (!se->texts) 1026 return -ENOMEM; 1027 1028 return hdac_hdmi_fill_widget_info(&hdev->dev, widget, 1029 snd_soc_dapm_mux, port, widget_name, NULL, kc, 1, 1030 hdac_hdmi_pin_mux_widget_event, 1031 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG); 1032 } 1033 1034 /* Add cvt <- input <- mux route map */ 1035 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_device *hdev, 1036 struct snd_soc_dapm_widget *widgets, 1037 struct snd_soc_dapm_route *route, int rindex) 1038 { 1039 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1040 const struct snd_kcontrol_new *kc; 1041 struct soc_enum *se; 1042 int mux_index = hdmi->num_cvt + hdmi->num_ports; 1043 int i, j; 1044 1045 for (i = 0; i < hdmi->num_ports; i++) { 1046 kc = widgets[mux_index].kcontrol_news; 1047 se = (struct soc_enum *)kc->private_value; 1048 for (j = 0; j < hdmi->num_cvt; j++) { 1049 hdac_hdmi_fill_route(&route[rindex], 1050 widgets[mux_index].name, 1051 se->texts[j + 1], 1052 widgets[j].name, NULL); 1053 1054 rindex++; 1055 } 1056 1057 mux_index++; 1058 } 1059 } 1060 1061 /* 1062 * Widgets are added in the below sequence 1063 * Converter widgets for num converters enumerated 1064 * Pin-port widgets for num ports for Pins enumerated 1065 * Pin-port mux widgets to represent connenction list of pin widget 1066 * 1067 * For each port, one Mux and One output widget is added 1068 * Total widgets elements = num_cvt + (num_ports * 2); 1069 * 1070 * Routes are added as below: 1071 * pin-port mux -> pin (based on num_ports) 1072 * cvt -> "Input sel control" -> pin-port_mux 1073 * 1074 * Total route elements: 1075 * num_ports + (pin_muxes * num_cvt) 1076 */ 1077 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm) 1078 { 1079 struct device *dev = snd_soc_dapm_to_dev(dapm); 1080 struct snd_soc_card *card = snd_soc_dapm_to_card(dapm); 1081 struct snd_soc_dapm_widget *widgets; 1082 struct snd_soc_dapm_route *route; 1083 struct hdac_device *hdev = dev_to_hdac_dev(dev); 1084 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1085 struct snd_soc_dai_driver *dai_drv = hdmi->dai_drv; 1086 char widget_name[NAME_SIZE]; 1087 struct hdac_hdmi_cvt *cvt; 1088 struct hdac_hdmi_pin *pin; 1089 int ret, i = 0, num_routes = 0, j; 1090 1091 if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list)) 1092 return -EINVAL; 1093 1094 widgets = devm_kzalloc(dev, (sizeof(*widgets) * 1095 ((2 * hdmi->num_ports) + hdmi->num_cvt)), 1096 GFP_KERNEL); 1097 1098 if (!widgets) 1099 return -ENOMEM; 1100 1101 /* DAPM widgets to represent each converter widget */ 1102 list_for_each_entry(cvt, &hdmi->cvt_list, head) { 1103 sprintf(widget_name, "Converter %d", cvt->nid); 1104 ret = hdac_hdmi_fill_widget_info(dev, &widgets[i], 1105 snd_soc_dapm_aif_in, cvt, 1106 widget_name, dai_drv[i].playback.stream_name, NULL, 0, 1107 hdac_hdmi_cvt_output_widget_event, 1108 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD); 1109 if (ret < 0) 1110 return ret; 1111 i++; 1112 } 1113 1114 list_for_each_entry(pin, &hdmi->pin_list, head) { 1115 for (j = 0; j < pin->num_ports; j++) { 1116 sprintf(widget_name, "hif%d-%d Output", 1117 pin->nid, pin->ports[j].id); 1118 ret = hdac_hdmi_fill_widget_info(dev, &widgets[i], 1119 snd_soc_dapm_output, &pin->ports[j], 1120 widget_name, NULL, NULL, 0, 1121 hdac_hdmi_pin_output_widget_event, 1122 SND_SOC_DAPM_PRE_PMU | 1123 SND_SOC_DAPM_POST_PMD); 1124 if (ret < 0) 1125 return ret; 1126 pin->ports[j].output_pin = widgets[i].name; 1127 i++; 1128 } 1129 } 1130 1131 /* DAPM widgets to represent the connection list to pin widget */ 1132 list_for_each_entry(pin, &hdmi->pin_list, head) { 1133 for (j = 0; j < pin->num_ports; j++) { 1134 sprintf(widget_name, "Pin%d-Port%d Mux", 1135 pin->nid, pin->ports[j].id); 1136 ret = hdac_hdmi_create_pin_port_muxs(hdev, 1137 &pin->ports[j], &widgets[i], 1138 widget_name); 1139 if (ret < 0) 1140 return ret; 1141 i++; 1142 1143 /* For cvt to pin_mux mapping */ 1144 num_routes += hdmi->num_cvt; 1145 1146 /* For pin_mux to pin mapping */ 1147 num_routes++; 1148 } 1149 } 1150 1151 route = devm_kzalloc(dev, (sizeof(*route) * num_routes), 1152 GFP_KERNEL); 1153 if (!route) 1154 return -ENOMEM; 1155 1156 i = 0; 1157 /* Add pin <- NULL <- mux route map */ 1158 list_for_each_entry(pin, &hdmi->pin_list, head) { 1159 for (j = 0; j < pin->num_ports; j++) { 1160 int sink_index = i + hdmi->num_cvt; 1161 int src_index = sink_index + pin->num_ports * 1162 hdmi->num_pin; 1163 1164 hdac_hdmi_fill_route(&route[i], 1165 widgets[sink_index].name, NULL, 1166 widgets[src_index].name, NULL); 1167 i++; 1168 } 1169 } 1170 1171 hdac_hdmi_add_pinmux_cvt_route(hdev, widgets, route, i); 1172 1173 snd_soc_dapm_new_controls(dapm, widgets, 1174 ((2 * hdmi->num_ports) + hdmi->num_cvt)); 1175 1176 snd_soc_dapm_add_routes(dapm, route, num_routes); 1177 snd_soc_dapm_new_widgets(card); 1178 1179 return 0; 1180 1181 } 1182 1183 static int hdac_hdmi_init_dai_map(struct hdac_device *hdev) 1184 { 1185 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1186 struct hdac_hdmi_dai_port_map *dai_map; 1187 struct hdac_hdmi_cvt *cvt; 1188 int dai_id = 0; 1189 1190 if (list_empty(&hdmi->cvt_list)) 1191 return -EINVAL; 1192 1193 list_for_each_entry(cvt, &hdmi->cvt_list, head) { 1194 dai_map = &hdmi->dai_map[dai_id]; 1195 dai_map->dai_id = dai_id; 1196 dai_map->cvt = cvt; 1197 1198 dai_id++; 1199 1200 if (dai_id == HDA_MAX_CVTS) { 1201 dev_warn(&hdev->dev, 1202 "Max dais supported: %d\n", dai_id); 1203 break; 1204 } 1205 } 1206 1207 return 0; 1208 } 1209 1210 static int hdac_hdmi_add_cvt(struct hdac_device *hdev, hda_nid_t nid) 1211 { 1212 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1213 struct hdac_hdmi_cvt *cvt; 1214 char name[NAME_SIZE]; 1215 1216 cvt = devm_kzalloc(&hdev->dev, sizeof(*cvt), GFP_KERNEL); 1217 if (!cvt) 1218 return -ENOMEM; 1219 1220 cvt->nid = nid; 1221 sprintf(name, "cvt %d", cvt->nid); 1222 cvt->name = devm_kstrdup(&hdev->dev, name, GFP_KERNEL); 1223 if (!cvt->name) 1224 return -ENOMEM; 1225 1226 list_add_tail(&cvt->head, &hdmi->cvt_list); 1227 hdmi->num_cvt++; 1228 1229 return hdac_hdmi_query_cvt_params(hdev, cvt); 1230 } 1231 1232 static int hdac_hdmi_parse_eld(struct hdac_device *hdev, 1233 struct hdac_hdmi_port *port) 1234 { 1235 unsigned int ver, mnl; 1236 1237 ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK) 1238 >> DRM_ELD_VER_SHIFT; 1239 1240 if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) { 1241 dev_err_ratelimited(&hdev->dev, 1242 "HDMI: Unknown ELD version %d\n", ver); 1243 return -EINVAL; 1244 } 1245 1246 mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] & 1247 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT; 1248 1249 if (mnl > ELD_MAX_MNL) { 1250 dev_err_ratelimited(&hdev->dev, 1251 "HDMI: MNL Invalid %d\n", mnl); 1252 return -EINVAL; 1253 } 1254 1255 port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER]; 1256 1257 return 0; 1258 } 1259 1260 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin, 1261 struct hdac_hdmi_port *port) 1262 { 1263 struct hdac_device *hdev = pin->hdev; 1264 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1265 struct hdac_hdmi_pcm *pcm; 1266 int size = 0; 1267 int port_id = -1; 1268 bool eld_valid, eld_changed; 1269 1270 if (!hdmi) 1271 return; 1272 1273 /* 1274 * In case of non MST pin, get_eld info API expectes port 1275 * to be -1. 1276 */ 1277 scoped_guard(mutex, &hdmi->pin_mutex) { 1278 port->eld.monitor_present = false; 1279 1280 if (pin->mst_capable) 1281 port_id = port->id; 1282 1283 size = snd_hdac_acomp_get_eld(hdev, pin->nid, port_id, 1284 &port->eld.monitor_present, 1285 port->eld.eld_buffer, 1286 ELD_MAX_SIZE); 1287 1288 if (size > 0) { 1289 size = min(size, ELD_MAX_SIZE); 1290 if (hdac_hdmi_parse_eld(hdev, port) < 0) 1291 size = -EINVAL; 1292 } 1293 1294 eld_valid = port->eld.eld_valid; 1295 1296 if (size > 0) { 1297 port->eld.eld_valid = true; 1298 port->eld.eld_size = size; 1299 } else { 1300 port->eld.eld_valid = false; 1301 port->eld.eld_size = 0; 1302 } 1303 1304 eld_changed = (eld_valid != port->eld.eld_valid); 1305 1306 pcm = hdac_hdmi_get_pcm(hdev, port); 1307 1308 if (!port->eld.monitor_present || !port->eld.eld_valid) { 1309 1310 dev_dbg(&hdev->dev, "%s: disconnect for pin:port %d:%d\n", 1311 __func__, pin->nid, port->id); 1312 1313 /* 1314 * PCMs are not registered during device probe, so don't 1315 * report jack here. It will be done in usermode mux 1316 * control select. 1317 */ 1318 if (pcm) { 1319 hdac_hdmi_jack_report(pcm, port, false); 1320 schedule_work(&port->dapm_work); 1321 } 1322 1323 return; 1324 } 1325 1326 if (port->eld.monitor_present && port->eld.eld_valid) { 1327 if (pcm) { 1328 hdac_hdmi_jack_report(pcm, port, true); 1329 schedule_work(&port->dapm_work); 1330 } 1331 1332 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1, 1333 port->eld.eld_buffer, port->eld.eld_size, false); 1334 } 1335 } 1336 1337 if (eld_changed && pcm) 1338 snd_ctl_notify(hdmi->card, 1339 SNDRV_CTL_EVENT_MASK_VALUE | 1340 SNDRV_CTL_EVENT_MASK_INFO, 1341 &pcm->eld_ctl->id); 1342 } 1343 1344 static int hdac_hdmi_add_ports(struct hdac_device *hdev, 1345 struct hdac_hdmi_pin *pin) 1346 { 1347 struct hdac_hdmi_port *ports; 1348 int max_ports = HDA_MAX_PORTS; 1349 int i; 1350 1351 /* 1352 * FIXME: max_port may vary for each platform, so pass this as 1353 * as driver data or query from i915 interface when this API is 1354 * implemented. 1355 */ 1356 1357 ports = devm_kcalloc(&hdev->dev, max_ports, sizeof(*ports), GFP_KERNEL); 1358 if (!ports) 1359 return -ENOMEM; 1360 1361 for (i = 0; i < max_ports; i++) { 1362 ports[i].id = i; 1363 ports[i].pin = pin; 1364 INIT_WORK(&ports[i].dapm_work, hdac_hdmi_jack_dapm_work); 1365 } 1366 pin->ports = ports; 1367 pin->num_ports = max_ports; 1368 return 0; 1369 } 1370 1371 static int hdac_hdmi_add_pin(struct hdac_device *hdev, hda_nid_t nid) 1372 { 1373 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1374 struct hdac_hdmi_pin *pin; 1375 int ret; 1376 1377 pin = devm_kzalloc(&hdev->dev, sizeof(*pin), GFP_KERNEL); 1378 if (!pin) 1379 return -ENOMEM; 1380 1381 pin->nid = nid; 1382 pin->mst_capable = false; 1383 pin->hdev = hdev; 1384 ret = hdac_hdmi_add_ports(hdev, pin); 1385 if (ret < 0) 1386 return ret; 1387 1388 list_add_tail(&pin->head, &hdmi->pin_list); 1389 hdmi->num_pin++; 1390 hdmi->num_ports += pin->num_ports; 1391 1392 return 0; 1393 } 1394 1395 #define INTEL_VENDOR_NID 0x08 1396 #define INTEL_GLK_VENDOR_NID 0x0b 1397 #define INTEL_GET_VENDOR_VERB 0xf81 1398 #define INTEL_SET_VENDOR_VERB 0x781 1399 #define INTEL_EN_DP12 0x02 /* enable DP 1.2 features */ 1400 #define INTEL_EN_ALL_PIN_CVTS 0x01 /* enable 2nd & 3rd pins and convertors */ 1401 1402 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdev) 1403 { 1404 unsigned int vendor_param; 1405 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1406 unsigned int vendor_nid = hdmi->drv_data->vendor_nid; 1407 1408 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0, 1409 INTEL_GET_VENDOR_VERB, 0); 1410 if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS) 1411 return; 1412 1413 vendor_param |= INTEL_EN_ALL_PIN_CVTS; 1414 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0, 1415 INTEL_SET_VENDOR_VERB, vendor_param); 1416 if (vendor_param == -1) 1417 return; 1418 } 1419 1420 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdev) 1421 { 1422 unsigned int vendor_param; 1423 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1424 unsigned int vendor_nid = hdmi->drv_data->vendor_nid; 1425 1426 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0, 1427 INTEL_GET_VENDOR_VERB, 0); 1428 if (vendor_param == -1 || vendor_param & INTEL_EN_DP12) 1429 return; 1430 1431 /* enable DP1.2 mode */ 1432 vendor_param |= INTEL_EN_DP12; 1433 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0, 1434 INTEL_SET_VENDOR_VERB, vendor_param); 1435 if (vendor_param == -1) 1436 return; 1437 1438 } 1439 1440 static const struct snd_soc_dai_ops hdmi_dai_ops = { 1441 .startup = hdac_hdmi_pcm_open, 1442 .shutdown = hdac_hdmi_pcm_close, 1443 .hw_params = hdac_hdmi_set_hw_params, 1444 .set_stream = hdac_hdmi_set_stream, 1445 }; 1446 1447 /* 1448 * Each converter can support a stream independently. So a dai is created 1449 * based on the number of converter queried. 1450 */ 1451 static int hdac_hdmi_create_dais(struct hdac_device *hdev, 1452 struct snd_soc_dai_driver **dais, 1453 struct hdac_hdmi_priv *hdmi, int num_dais) 1454 { 1455 struct snd_soc_dai_driver *hdmi_dais; 1456 struct hdac_hdmi_cvt *cvt; 1457 char name[NAME_SIZE], dai_name[NAME_SIZE]; 1458 int i = 0; 1459 u32 rates, bps; 1460 unsigned int rate_max = 384000, rate_min = 8000; 1461 u64 formats; 1462 int ret; 1463 1464 hdmi_dais = devm_kzalloc(&hdev->dev, 1465 (sizeof(*hdmi_dais) * num_dais), 1466 GFP_KERNEL); 1467 if (!hdmi_dais) 1468 return -ENOMEM; 1469 1470 list_for_each_entry(cvt, &hdmi->cvt_list, head) { 1471 ret = snd_hdac_query_supported_pcm(hdev, cvt->nid, 1472 &rates, &formats, NULL, &bps); 1473 if (ret) 1474 return ret; 1475 1476 /* Filter out 44.1, 88.2 and 176.4Khz */ 1477 rates &= ~(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_88200 | 1478 SNDRV_PCM_RATE_176400); 1479 if (!rates) 1480 return -EINVAL; 1481 1482 sprintf(dai_name, "intel-hdmi-hifi%d", i+1); 1483 hdmi_dais[i].name = devm_kstrdup(&hdev->dev, 1484 dai_name, GFP_KERNEL); 1485 1486 if (!hdmi_dais[i].name) 1487 return -ENOMEM; 1488 1489 snprintf(name, sizeof(name), "hifi%d", i+1); 1490 hdmi_dais[i].playback.stream_name = 1491 devm_kstrdup(&hdev->dev, name, GFP_KERNEL); 1492 if (!hdmi_dais[i].playback.stream_name) 1493 return -ENOMEM; 1494 1495 /* 1496 * Set caps based on capability queried from the converter. 1497 * It will be constrained runtime based on ELD queried. 1498 */ 1499 hdmi_dais[i].playback.formats = formats; 1500 hdmi_dais[i].playback.rates = rates; 1501 hdmi_dais[i].playback.rate_max = rate_max; 1502 hdmi_dais[i].playback.rate_min = rate_min; 1503 hdmi_dais[i].playback.channels_min = 2; 1504 hdmi_dais[i].playback.channels_max = 2; 1505 hdmi_dais[i].playback.sig_bits = bps; 1506 hdmi_dais[i].ops = &hdmi_dai_ops; 1507 i++; 1508 } 1509 1510 *dais = hdmi_dais; 1511 hdmi->dai_drv = hdmi_dais; 1512 1513 return 0; 1514 } 1515 1516 /* 1517 * Parse all nodes and store the cvt/pin nids in array 1518 * Add one time initialization for pin and cvt widgets 1519 */ 1520 static int hdac_hdmi_parse_and_map_nid(struct hdac_device *hdev, 1521 struct snd_soc_dai_driver **dais, int *num_dais) 1522 { 1523 hda_nid_t nid; 1524 int i, num_nodes; 1525 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1526 int ret; 1527 1528 hdac_hdmi_skl_enable_all_pins(hdev); 1529 hdac_hdmi_skl_enable_dp12(hdev); 1530 1531 num_nodes = snd_hdac_get_sub_nodes(hdev, hdev->afg, &nid); 1532 if (!nid || num_nodes <= 0) { 1533 dev_warn(&hdev->dev, "HDMI: failed to get afg sub nodes\n"); 1534 return -EINVAL; 1535 } 1536 1537 for (i = 0; i < num_nodes; i++, nid++) { 1538 unsigned int caps; 1539 unsigned int type; 1540 1541 caps = snd_hdac_get_wcaps(hdev, nid); 1542 type = snd_hdac_get_wcaps_type(caps); 1543 1544 if (!(caps & AC_WCAP_DIGITAL)) 1545 continue; 1546 1547 switch (type) { 1548 1549 case AC_WID_AUD_OUT: 1550 ret = hdac_hdmi_add_cvt(hdev, nid); 1551 if (ret < 0) 1552 return ret; 1553 break; 1554 1555 case AC_WID_PIN: 1556 ret = hdac_hdmi_add_pin(hdev, nid); 1557 if (ret < 0) 1558 return ret; 1559 break; 1560 } 1561 } 1562 1563 if (!hdmi->num_pin || !hdmi->num_cvt) { 1564 ret = -EIO; 1565 dev_err(&hdev->dev, "Bad pin/cvt setup in %s\n", __func__); 1566 return ret; 1567 } 1568 1569 ret = hdac_hdmi_create_dais(hdev, dais, hdmi, hdmi->num_cvt); 1570 if (ret) { 1571 dev_err(&hdev->dev, "Failed to create dais with err: %d\n", 1572 ret); 1573 return ret; 1574 } 1575 1576 *num_dais = hdmi->num_cvt; 1577 ret = hdac_hdmi_init_dai_map(hdev); 1578 if (ret < 0) 1579 dev_err(&hdev->dev, "Failed to init DAI map with err: %d\n", 1580 ret); 1581 return ret; 1582 } 1583 1584 static int hdac_hdmi_pin2port(void *aptr, int pin) 1585 { 1586 return pin - 4; /* map NID 0x05 -> port #1 */ 1587 } 1588 1589 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe) 1590 { 1591 struct hdac_device *hdev = aptr; 1592 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1593 struct hdac_hdmi_pin *pin; 1594 struct hdac_hdmi_port *hport = NULL; 1595 struct snd_soc_component *component = hdmi->component; 1596 int i; 1597 1598 /* Don't know how this mapping is derived */ 1599 hda_nid_t pin_nid = port + 0x04; 1600 1601 dev_dbg(&hdev->dev, "%s: for pin:%d port=%d\n", __func__, 1602 pin_nid, pipe); 1603 1604 /* 1605 * skip notification during system suspend (but not in runtime PM); 1606 * the state will be updated at resume. Also since the ELD and 1607 * connection states are updated in anyway at the end of the resume, 1608 * we can skip it when received during PM process. 1609 */ 1610 if (snd_power_get_state(component->card->snd_card) != 1611 SNDRV_CTL_POWER_D0) 1612 return; 1613 1614 if (atomic_read(&hdev->in_pm)) 1615 return; 1616 1617 list_for_each_entry(pin, &hdmi->pin_list, head) { 1618 if (pin->nid != pin_nid) 1619 continue; 1620 1621 /* In case of non MST pin, pipe is -1 */ 1622 if (pipe == -1) { 1623 pin->mst_capable = false; 1624 /* if not MST, default is port[0] */ 1625 hport = &pin->ports[0]; 1626 } else { 1627 for (i = 0; i < pin->num_ports; i++) { 1628 pin->mst_capable = true; 1629 if (pin->ports[i].id == pipe) { 1630 hport = &pin->ports[i]; 1631 break; 1632 } 1633 } 1634 } 1635 1636 if (hport) 1637 hdac_hdmi_present_sense(pin, hport); 1638 } 1639 1640 } 1641 1642 static struct drm_audio_component_audio_ops aops = { 1643 .pin2port = hdac_hdmi_pin2port, 1644 .pin_eld_notify = hdac_hdmi_eld_notify_cb, 1645 }; 1646 1647 static void hdac_hdmi_present_sense_all_pins(struct hdac_device *hdev, 1648 struct hdac_hdmi_priv *hdmi, bool detect_pin_caps) 1649 { 1650 int i; 1651 struct hdac_hdmi_pin *pin; 1652 1653 list_for_each_entry(pin, &hdmi->pin_list, head) { 1654 if (detect_pin_caps) { 1655 1656 if (hdac_hdmi_get_port_len(hdev, pin->nid) == 0) 1657 pin->mst_capable = false; 1658 else 1659 pin->mst_capable = true; 1660 } 1661 1662 for (i = 0; i < pin->num_ports; i++) { 1663 if (!pin->mst_capable && i > 0) 1664 continue; 1665 1666 hdac_hdmi_present_sense(pin, &pin->ports[i]); 1667 } 1668 } 1669 } 1670 1671 static int hdmi_codec_probe(struct snd_soc_component *component) 1672 { 1673 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component); 1674 struct hdac_device *hdev = hdmi->hdev; 1675 struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component); 1676 struct hdac_ext_link *hlink; 1677 int ret; 1678 1679 hdmi->component = component; 1680 1681 /* 1682 * hold the ref while we probe, also no need to drop the ref on 1683 * exit, we call pm_runtime_suspend() so that will do for us 1684 */ 1685 hlink = snd_hdac_ext_bus_get_hlink_by_name(hdev->bus, dev_name(&hdev->dev)); 1686 if (!hlink) { 1687 dev_err(&hdev->dev, "hdac link not found\n"); 1688 return -EIO; 1689 } 1690 1691 snd_hdac_ext_bus_link_get(hdev->bus, hlink); 1692 1693 ret = create_fill_widget_route_map(dapm); 1694 if (ret < 0) 1695 return ret; 1696 1697 aops.audio_ptr = hdev; 1698 ret = snd_hdac_acomp_register_notifier(hdev->bus, &aops); 1699 if (ret < 0) { 1700 dev_err(&hdev->dev, "notifier register failed: err: %d\n", ret); 1701 return ret; 1702 } 1703 1704 hdac_hdmi_present_sense_all_pins(hdev, hdmi, true); 1705 /* Imp: Store the card pointer in hda_codec */ 1706 hdmi->card = component->card->snd_card; 1707 1708 /* 1709 * Setup a device_link between card device and HDMI codec device. 1710 * The card device is the consumer and the HDMI codec device is 1711 * the supplier. With this setting, we can make sure that the audio 1712 * domain in display power will be always turned on before operating 1713 * on the HDMI audio codec registers. 1714 * Let's use the flag DL_FLAG_AUTOREMOVE_CONSUMER. This can make 1715 * sure the device link is freed when the machine driver is removed. 1716 */ 1717 device_link_add(component->card->dev, &hdev->dev, DL_FLAG_RPM_ACTIVE | 1718 DL_FLAG_AUTOREMOVE_CONSUMER); 1719 /* 1720 * hdac_device core already sets the state to active and calls 1721 * get_noresume. So enable runtime and set the device to suspend. 1722 */ 1723 pm_runtime_enable(&hdev->dev); 1724 pm_runtime_put(&hdev->dev); 1725 pm_runtime_suspend(&hdev->dev); 1726 1727 return 0; 1728 } 1729 1730 static void hdmi_codec_remove(struct snd_soc_component *component) 1731 { 1732 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component); 1733 struct hdac_device *hdev = hdmi->hdev; 1734 int ret; 1735 1736 ret = snd_hdac_acomp_register_notifier(hdev->bus, NULL); 1737 if (ret < 0) 1738 dev_err(&hdev->dev, "notifier unregister failed: err: %d\n", 1739 ret); 1740 1741 pm_runtime_disable(&hdev->dev); 1742 } 1743 1744 static int hdmi_codec_resume(struct device *dev) 1745 { 1746 struct hdac_device *hdev = dev_to_hdac_dev(dev); 1747 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1748 int ret; 1749 1750 ret = pm_runtime_force_resume(dev); 1751 if (ret < 0) 1752 return ret; 1753 /* 1754 * As the ELD notify callback request is not entertained while the 1755 * device is in suspend state. Need to manually check detection of 1756 * all pins here. pin capablity change is not support, so use the 1757 * already set pin caps. 1758 * 1759 * NOTE: this is safe to call even if the codec doesn't actually resume. 1760 * The pin check involves only with DRM audio component hooks, so it 1761 * works even if the HD-audio side is still dreaming peacefully. 1762 */ 1763 hdac_hdmi_present_sense_all_pins(hdev, hdmi, false); 1764 return 0; 1765 } 1766 1767 static const struct snd_soc_component_driver hdmi_hda_codec = { 1768 .probe = hdmi_codec_probe, 1769 .remove = hdmi_codec_remove, 1770 .use_pmdown_time = 1, 1771 .endianness = 1, 1772 }; 1773 1774 static void hdac_hdmi_get_chmap(struct hdac_device *hdev, int pcm_idx, 1775 unsigned char *chmap) 1776 { 1777 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1778 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); 1779 1780 memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap)); 1781 } 1782 1783 static void hdac_hdmi_set_chmap(struct hdac_device *hdev, int pcm_idx, 1784 unsigned char *chmap, int prepared) 1785 { 1786 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1787 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); 1788 struct hdac_hdmi_port *port; 1789 1790 if (!pcm) 1791 return; 1792 1793 if (list_empty(&pcm->port_list)) 1794 return; 1795 1796 guard(mutex)(&pcm->lock); 1797 pcm->chmap_set = true; 1798 memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap)); 1799 list_for_each_entry(port, &pcm->port_list, head) 1800 if (prepared) 1801 hdac_hdmi_setup_audio_infoframe(hdev, pcm, port); 1802 } 1803 1804 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdev, int pcm_idx) 1805 { 1806 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1807 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); 1808 1809 if (!pcm) 1810 return false; 1811 1812 if (list_empty(&pcm->port_list)) 1813 return false; 1814 1815 return true; 1816 } 1817 1818 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdev, int pcm_idx) 1819 { 1820 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1821 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx); 1822 struct hdac_hdmi_port *port; 1823 1824 if (!pcm) 1825 return 0; 1826 1827 if (list_empty(&pcm->port_list)) 1828 return 0; 1829 1830 port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head); 1831 1832 if (!port || !port->eld.eld_valid) 1833 return 0; 1834 1835 return port->eld.info.spk_alloc; 1836 } 1837 1838 static struct hdac_hdmi_drv_data intel_glk_drv_data = { 1839 .vendor_nid = INTEL_GLK_VENDOR_NID, 1840 }; 1841 1842 static struct hdac_hdmi_drv_data intel_drv_data = { 1843 .vendor_nid = INTEL_VENDOR_NID, 1844 }; 1845 1846 static int hdac_hdmi_dev_probe(struct hdac_device *hdev) 1847 { 1848 struct hdac_hdmi_priv *hdmi_priv; 1849 struct snd_soc_dai_driver *hdmi_dais = NULL; 1850 struct hdac_ext_link *hlink; 1851 int num_dais = 0; 1852 int ret; 1853 struct hdac_driver *hdrv = drv_to_hdac_driver(hdev->dev.driver); 1854 const struct hda_device_id *hdac_id = hdac_get_device_id(hdev, hdrv); 1855 1856 /* hold the ref while we probe */ 1857 hlink = snd_hdac_ext_bus_get_hlink_by_name(hdev->bus, dev_name(&hdev->dev)); 1858 if (!hlink) { 1859 dev_err(&hdev->dev, "hdac link not found\n"); 1860 return -EIO; 1861 } 1862 1863 snd_hdac_ext_bus_link_get(hdev->bus, hlink); 1864 1865 hdmi_priv = devm_kzalloc(&hdev->dev, sizeof(*hdmi_priv), GFP_KERNEL); 1866 if (hdmi_priv == NULL) { 1867 snd_hdac_ext_bus_link_put(hdev->bus, hlink); 1868 return -ENOMEM; 1869 } 1870 1871 snd_hdac_register_chmap_ops(hdev, &hdmi_priv->chmap); 1872 hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap; 1873 hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap; 1874 hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached; 1875 hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc; 1876 hdmi_priv->hdev = hdev; 1877 1878 if (!hdac_id) { 1879 snd_hdac_ext_bus_link_put(hdev->bus, hlink); 1880 return -ENODEV; 1881 } 1882 1883 if (hdac_id->driver_data) 1884 hdmi_priv->drv_data = 1885 (struct hdac_hdmi_drv_data *)hdac_id->driver_data; 1886 else 1887 hdmi_priv->drv_data = &intel_drv_data; 1888 1889 dev_set_drvdata(&hdev->dev, hdmi_priv); 1890 1891 INIT_LIST_HEAD(&hdmi_priv->pin_list); 1892 INIT_LIST_HEAD(&hdmi_priv->cvt_list); 1893 INIT_LIST_HEAD(&hdmi_priv->pcm_list); 1894 mutex_init(&hdmi_priv->pin_mutex); 1895 1896 /* 1897 * Turned off in the runtime_suspend during the first explicit 1898 * pm_runtime_suspend call. 1899 */ 1900 snd_hdac_display_power(hdev->bus, hdev->addr, true); 1901 1902 ret = hdac_hdmi_parse_and_map_nid(hdev, &hdmi_dais, &num_dais); 1903 if (ret < 0) { 1904 dev_err(&hdev->dev, 1905 "Failed in parse and map nid with err: %d\n", ret); 1906 snd_hdac_ext_bus_link_put(hdev->bus, hlink); 1907 snd_hdac_display_power(hdev->bus, hdev->addr, false); 1908 return ret; 1909 } 1910 snd_hdac_refresh_widgets(hdev); 1911 1912 /* ASoC specific initialization */ 1913 ret = devm_snd_soc_register_component(&hdev->dev, &hdmi_hda_codec, 1914 hdmi_dais, num_dais); 1915 1916 snd_hdac_ext_bus_link_put(hdev->bus, hlink); 1917 1918 return ret; 1919 } 1920 1921 static void clear_dapm_works(struct hdac_device *hdev) 1922 { 1923 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev); 1924 struct hdac_hdmi_pin *pin; 1925 int i; 1926 1927 list_for_each_entry(pin, &hdmi->pin_list, head) 1928 for (i = 0; i < pin->num_ports; i++) 1929 cancel_work_sync(&pin->ports[i].dapm_work); 1930 } 1931 1932 static int hdac_hdmi_dev_remove(struct hdac_device *hdev) 1933 { 1934 clear_dapm_works(hdev); 1935 snd_hdac_display_power(hdev->bus, hdev->addr, false); 1936 1937 return 0; 1938 } 1939 1940 static int hdac_hdmi_runtime_suspend(struct device *dev) 1941 { 1942 struct hdac_device *hdev = dev_to_hdac_dev(dev); 1943 struct hdac_bus *bus = hdev->bus; 1944 struct hdac_ext_link *hlink; 1945 1946 dev_dbg(dev, "Enter: %s\n", __func__); 1947 1948 /* controller may not have been initialized for the first time */ 1949 if (!bus) 1950 return 0; 1951 1952 /* 1953 * Power down afg. 1954 * codec_read is preferred over codec_write to set the power state. 1955 * This way verb is send to set the power state and response 1956 * is received. So setting power state is ensured without using loop 1957 * to read the state. 1958 */ 1959 snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE, 1960 AC_PWRST_D3); 1961 1962 hlink = snd_hdac_ext_bus_get_hlink_by_name(bus, dev_name(dev)); 1963 if (!hlink) { 1964 dev_err(dev, "hdac link not found\n"); 1965 return -EIO; 1966 } 1967 1968 snd_hdac_codec_link_down(hdev); 1969 snd_hdac_ext_bus_link_put(bus, hlink); 1970 1971 snd_hdac_display_power(bus, hdev->addr, false); 1972 1973 return 0; 1974 } 1975 1976 static int hdac_hdmi_runtime_resume(struct device *dev) 1977 { 1978 struct hdac_device *hdev = dev_to_hdac_dev(dev); 1979 struct hdac_bus *bus = hdev->bus; 1980 struct hdac_ext_link *hlink; 1981 1982 dev_dbg(dev, "Enter: %s\n", __func__); 1983 1984 /* controller may not have been initialized for the first time */ 1985 if (!bus) 1986 return 0; 1987 1988 hlink = snd_hdac_ext_bus_get_hlink_by_name(bus, dev_name(dev)); 1989 if (!hlink) { 1990 dev_err(dev, "hdac link not found\n"); 1991 return -EIO; 1992 } 1993 1994 snd_hdac_ext_bus_link_get(bus, hlink); 1995 snd_hdac_codec_link_up(hdev); 1996 1997 snd_hdac_display_power(bus, hdev->addr, true); 1998 1999 hdac_hdmi_skl_enable_all_pins(hdev); 2000 hdac_hdmi_skl_enable_dp12(hdev); 2001 2002 /* Power up afg */ 2003 snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE, 2004 AC_PWRST_D0); 2005 2006 return 0; 2007 } 2008 2009 static const struct dev_pm_ops hdac_hdmi_pm = { 2010 RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL) 2011 SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, hdmi_codec_resume) 2012 }; 2013 2014 static const struct hda_device_id hdmi_list[] = { 2015 HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0), 2016 HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0), 2017 HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0), 2018 HDA_CODEC_EXT_ENTRY(0x8086280c, 0x100000, "Cannonlake HDMI", 2019 &intel_glk_drv_data), 2020 HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI", 2021 &intel_glk_drv_data), 2022 {} 2023 }; 2024 2025 MODULE_DEVICE_TABLE(hdaudio, hdmi_list); 2026 2027 static struct hdac_driver hdmi_driver = { 2028 .driver = { 2029 .name = "HDMI HDA Codec", 2030 .pm = pm_ptr(&hdac_hdmi_pm), 2031 }, 2032 .id_table = hdmi_list, 2033 .probe = hdac_hdmi_dev_probe, 2034 .remove = hdac_hdmi_dev_remove, 2035 }; 2036 2037 static int __init hdmi_init(void) 2038 { 2039 return snd_hda_ext_driver_register(&hdmi_driver); 2040 } 2041 2042 static void __exit hdmi_exit(void) 2043 { 2044 snd_hda_ext_driver_unregister(&hdmi_driver); 2045 } 2046 2047 module_init(hdmi_init); 2048 module_exit(hdmi_exit); 2049 2050 MODULE_LICENSE("GPL v2"); 2051 MODULE_DESCRIPTION("HDMI HD codec"); 2052 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>"); 2053 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>"); 2054