1 // SPDX-License-Identifier: GPL-2.0-only
3 * hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms
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 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
13 #include <linux/init.h>
14 #include <linux/delay.h>
15 #include <linux/module.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/hdmi.h>
18 #include <drm/drm_edid.h>
19 #include <drm/drm_eld.h>
20 #include <sound/pcm_params.h>
21 #include <sound/jack.h>
22 #include <sound/soc.h>
23 #include <sound/hdaudio_ext.h>
24 #include <sound/hda_i915.h>
25 #include <sound/pcm_drm_eld.h>
26 #include <sound/hda_chmap.h>
27 #include "../../hda/local.h"
28 #include "hdac_hdmi.h"
32 #define AMP_OUT_MUTE 0xb080
33 #define AMP_OUT_UNMUTE 0xb000
34 #define PIN_OUT (AC_PINCTL_OUT_EN)
36 #define HDA_MAX_CONNECTIONS 32
38 #define HDA_MAX_CVTS 3
39 #define HDA_MAX_PORTS 3
41 #define ELD_MAX_SIZE 256
42 #define ELD_FIXED_BYTES 20
44 #define ELD_VER_CEA_861D 2
45 #define ELD_VER_PARTIAL 31
46 #define ELD_MAX_MNL 16
48 struct hdac_hdmi_cvt_params {
49 unsigned int channels_min;
50 unsigned int channels_max;
56 struct hdac_hdmi_cvt {
57 struct list_head head;
60 struct hdac_hdmi_cvt_params params;
63 /* Currently only spk_alloc, more to be added */
64 struct hdac_hdmi_parsed_eld {
68 struct hdac_hdmi_eld {
72 char eld_buffer[ELD_MAX_SIZE];
73 struct hdac_hdmi_parsed_eld info;
76 struct hdac_hdmi_pin {
77 struct list_head head;
80 struct hdac_hdmi_port *ports;
82 struct hdac_device *hdev;
85 struct hdac_hdmi_port {
86 struct list_head head;
88 struct hdac_hdmi_pin *pin;
90 hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
91 struct hdac_hdmi_eld eld;
94 struct snd_soc_dapm_context *dapm;
95 const char *output_pin;
96 struct work_struct dapm_work;
99 struct hdac_hdmi_pcm {
100 struct list_head head;
102 struct list_head port_list;
103 struct hdac_hdmi_cvt *cvt;
104 struct snd_soc_jack *jack;
109 unsigned char chmap[8]; /* ALSA API channel-map */
112 struct snd_kcontrol *eld_ctl;
115 struct hdac_hdmi_dai_port_map {
117 struct hdac_hdmi_port *port;
118 struct hdac_hdmi_cvt *cvt;
121 struct hdac_hdmi_drv_data {
122 unsigned int vendor_nid;
125 struct hdac_hdmi_priv {
126 struct hdac_device *hdev;
127 struct snd_soc_component *component;
128 struct snd_card *card;
129 struct hdac_hdmi_dai_port_map dai_map[HDA_MAX_CVTS];
130 struct list_head pin_list;
131 struct list_head cvt_list;
132 struct list_head pcm_list;
136 struct mutex pin_mutex;
137 struct hdac_chmap chmap;
138 struct hdac_hdmi_drv_data *drv_data;
139 struct snd_soc_dai_driver *dai_drv;
142 #define hdev_to_hdmi_priv(_hdev) dev_get_drvdata(&(_hdev)->dev)
144 static struct hdac_hdmi_pcm *
145 hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi,
146 struct hdac_hdmi_cvt *cvt)
148 struct hdac_hdmi_pcm *pcm;
150 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
158 static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm,
159 struct hdac_hdmi_port *port, bool is_connect)
161 struct hdac_device *hdev = port->pin->hdev;
163 port->is_connect = is_connect;
166 * Report Jack connect event when a device is connected
167 * for the first time where same PCM is attached to multiple
170 if (pcm->jack_event == 0) {
172 "jack report for pcm=%d\n",
174 snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT,
180 * Report Jack disconnect event when a device is disconnected
181 * is the only last connected device when same PCM is attached
184 if (pcm->jack_event == 1)
185 snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT);
186 if (pcm->jack_event > 0)
191 static void hdac_hdmi_port_dapm_update(struct hdac_hdmi_port *port)
193 if (port->is_connect)
194 snd_soc_dapm_enable_pin(port->dapm, port->jack_pin);
196 snd_soc_dapm_disable_pin(port->dapm, port->jack_pin);
197 snd_soc_dapm_sync(port->dapm);
200 static void hdac_hdmi_jack_dapm_work(struct work_struct *work)
202 struct hdac_hdmi_port *port;
204 port = container_of(work, struct hdac_hdmi_port, dapm_work);
205 hdac_hdmi_port_dapm_update(port);
208 static void hdac_hdmi_jack_report_sync(struct hdac_hdmi_pcm *pcm,
209 struct hdac_hdmi_port *port, bool is_connect)
211 hdac_hdmi_jack_report(pcm, port, is_connect);
212 hdac_hdmi_port_dapm_update(port);
215 /* MST supported verbs */
217 * Get the no devices that can be connected to a port on the Pin widget.
219 static int hdac_hdmi_get_port_len(struct hdac_device *hdev, hda_nid_t nid)
222 unsigned int type, param;
224 caps = get_wcaps(hdev, nid);
225 type = get_wcaps_type(caps);
227 if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN))
230 param = snd_hdac_read_parm_uncached(hdev, nid, AC_PAR_DEVLIST_LEN);
234 return param & AC_DEV_LIST_LEN_MASK;
238 * Get the port entry select on the pin. Return the port entry
239 * id selected on the pin. Return 0 means the first port entry
240 * is selected or MST is not supported.
242 static int hdac_hdmi_port_select_get(struct hdac_device *hdev,
243 struct hdac_hdmi_port *port)
245 return snd_hdac_codec_read(hdev, port->pin->nid,
246 0, AC_VERB_GET_DEVICE_SEL, 0);
250 * Sets the selected port entry for the configuring Pin widget verb.
251 * returns error if port set is not equal to port get otherwise success
253 static int hdac_hdmi_port_select_set(struct hdac_device *hdev,
254 struct hdac_hdmi_port *port)
258 if (!port->pin->mst_capable)
261 /* AC_PAR_DEVLIST_LEN is 0 based. */
262 num_ports = hdac_hdmi_get_port_len(hdev, port->pin->nid);
266 * Device List Length is a 0 based integer value indicating the
267 * number of sink device that a MST Pin Widget can support.
269 if (num_ports + 1 < port->id)
272 snd_hdac_codec_write(hdev, port->pin->nid, 0,
273 AC_VERB_SET_DEVICE_SEL, port->id);
275 if (port->id != hdac_hdmi_port_select_get(hdev, port))
278 dev_dbg(&hdev->dev, "Selected the port=%d\n", port->id);
283 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
286 struct hdac_hdmi_pcm *pcm;
288 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
289 if (pcm->pcm_id == pcm_idx)
296 static unsigned int sad_format(const u8 *sad)
298 return ((sad[0] >> 0x3) & 0x1f);
301 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
306 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
309 u64 formats = SNDRV_PCM_FMTBIT_S16;
311 const u8 *sad, *eld_buf = eld;
313 sad = drm_eld_sad(eld_buf);
315 goto format_constraint;
317 for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
318 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
321 * the controller support 20 and 24 bits in 32 bit
322 * container so we set S32
324 if (sad_sample_bits_lpcm(sad) & 0x6)
325 formats |= SNDRV_PCM_FMTBIT_S32;
330 return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
336 hdac_hdmi_set_dip_index(struct hdac_device *hdev, hda_nid_t pin_nid,
337 int packet_index, int byte_index)
341 val = (packet_index << 5) | (byte_index & 0x1f);
342 snd_hdac_codec_write(hdev, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
345 struct dp_audio_infoframe {
348 u8 ver; /* 0x11 << 2 */
350 u8 CC02_CT47; /* match with HDMI infoframe from this on */
354 u8 LFEPBL01_LSV36_DM_INH7;
357 static int hdac_hdmi_setup_audio_infoframe(struct hdac_device *hdev,
358 struct hdac_hdmi_pcm *pcm, struct hdac_hdmi_port *port)
360 uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
361 struct hdmi_audio_infoframe frame;
362 struct hdac_hdmi_pin *pin = port->pin;
363 struct dp_audio_infoframe dp_ai;
364 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
365 struct hdac_hdmi_cvt *cvt = pcm->cvt;
373 ca = snd_hdac_channel_allocation(hdev, port->eld.info.spk_alloc,
374 pcm->channels, pcm->chmap_set, true, pcm->chmap);
376 channels = snd_hdac_get_active_channels(ca);
377 hdmi->chmap.ops.set_channel_count(hdev, cvt->nid, channels);
379 snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
380 pcm->channels, pcm->chmap, pcm->chmap_set);
382 eld_buf = port->eld.eld_buffer;
383 conn_type = drm_eld_get_conn_type(eld_buf);
386 case DRM_ELD_CONN_TYPE_HDMI:
387 hdmi_audio_infoframe_init(&frame);
389 frame.channels = channels;
390 frame.channel_allocation = ca;
392 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
398 case DRM_ELD_CONN_TYPE_DP:
399 memset(&dp_ai, 0, sizeof(dp_ai));
402 dp_ai.ver = 0x11 << 2;
403 dp_ai.CC02_CT47 = channels - 1;
410 dev_err(&hdev->dev, "Invalid connection type: %d\n", conn_type);
414 /* stop infoframe transmission */
415 hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
416 snd_hdac_codec_write(hdev, pin->nid, 0,
417 AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
420 /* Fill infoframe. Index auto-incremented */
421 hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
422 if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
423 for (i = 0; i < sizeof(buffer); i++)
424 snd_hdac_codec_write(hdev, pin->nid, 0,
425 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
427 for (i = 0; i < sizeof(dp_ai); i++)
428 snd_hdac_codec_write(hdev, pin->nid, 0,
429 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
432 /* Start infoframe */
433 hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
434 snd_hdac_codec_write(hdev, pin->nid, 0,
435 AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
440 static int hdac_hdmi_set_stream(struct snd_soc_dai *dai,
441 void *stream, int direction)
443 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
444 struct hdac_device *hdev = hdmi->hdev;
445 struct hdac_hdmi_dai_port_map *dai_map;
446 struct hdac_hdmi_pcm *pcm;
447 struct hdac_stream *hstream;
452 hstream = (struct hdac_stream *)stream;
454 dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, hstream->stream_tag);
456 dai_map = &hdmi->dai_map[dai->id];
458 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
461 pcm->stream_tag = (hstream->stream_tag << 4);
466 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
467 struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
469 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
470 struct hdac_hdmi_dai_port_map *dai_map;
471 struct hdac_hdmi_pcm *pcm;
474 dai_map = &hdmi->dai_map[dai->id];
476 format = snd_hdac_calc_stream_format(params_rate(hparams),
477 params_channels(hparams), params_format(hparams),
478 dai->driver->playback.sig_bits, 0);
480 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
484 pcm->format = format;
485 pcm->channels = params_channels(hparams);
490 static int hdac_hdmi_query_port_connlist(struct hdac_device *hdev,
491 struct hdac_hdmi_pin *pin,
492 struct hdac_hdmi_port *port)
494 if (!(get_wcaps(hdev, pin->nid) & AC_WCAP_CONN_LIST)) {
496 "HDMI: pin %d wcaps %#x does not support connection list\n",
497 pin->nid, get_wcaps(hdev, pin->nid));
501 if (hdac_hdmi_port_select_set(hdev, port) < 0)
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)
508 "No connections found for pin:port %d:%d\n",
511 dev_dbg(&hdev->dev, "num_mux_nids %d for pin:port %d:%d\n",
512 port->num_mux_nids, pin->nid, port->id);
514 return port->num_mux_nids;
518 * Query pcm list and return port to which stream is routed.
520 * Also query connection list of the pin, to validate the cvt to port map.
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
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)
531 struct hdac_hdmi_pcm *pcm;
532 struct hdac_hdmi_port *port;
535 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
536 if (pcm->cvt == cvt) {
537 if (list_empty(&pcm->port_list))
540 list_for_each_entry(port, &pcm->port_list, head) {
541 mutex_lock(&pcm->lock);
542 ret = hdac_hdmi_query_port_connlist(hdev,
544 mutex_unlock(&pcm->lock);
548 for (i = 0; i < port->num_mux_nids; i++) {
549 if (port->mux_nids[i] == cvt->nid &&
550 port->eld.monitor_present &&
562 * Go through all converters and ensure connection is set to
563 * the correct pin as set via kcontrols.
565 static void hdac_hdmi_verify_connect_sel_all_pins(struct hdac_device *hdev)
567 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
568 struct hdac_hdmi_port *port;
569 struct hdac_hdmi_cvt *cvt;
572 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
573 port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt);
574 if (port && port->pin) {
575 snd_hdac_codec_write(hdev, port->pin->nid, 0,
576 AC_VERB_SET_CONNECT_SEL, cvt_idx);
577 dev_dbg(&hdev->dev, "%s: %s set connect %d -> %d\n",
578 __func__, cvt->name, port->pin->nid, cvt_idx);
585 * This tries to get a valid pin and set the HW constraints based on the
586 * ELD. Even if a valid pin is not found return success so that device open
589 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
590 struct snd_soc_dai *dai)
592 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
593 struct hdac_device *hdev = hdmi->hdev;
594 struct hdac_hdmi_dai_port_map *dai_map;
595 struct hdac_hdmi_cvt *cvt;
596 struct hdac_hdmi_port *port;
599 dai_map = &hdmi->dai_map[dai->id];
602 port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt);
605 * To make PA and other userland happy.
606 * userland scans devices so returning error does not help.
610 if ((!port->eld.monitor_present) ||
611 (!port->eld.eld_valid)) {
614 "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n",
615 port->eld.monitor_present, port->eld.eld_valid,
616 port->pin->nid, port->id);
621 dai_map->port = port;
623 ret = hdac_hdmi_eld_limit_formats(substream->runtime,
624 port->eld.eld_buffer);
628 return snd_pcm_hw_constraint_eld(substream->runtime,
629 port->eld.eld_buffer);
632 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
633 struct snd_soc_dai *dai)
635 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
636 struct hdac_hdmi_dai_port_map *dai_map;
637 struct hdac_hdmi_pcm *pcm;
639 dai_map = &hdmi->dai_map[dai->id];
641 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
644 mutex_lock(&pcm->lock);
645 pcm->chmap_set = false;
646 memset(pcm->chmap, 0, sizeof(pcm->chmap));
648 mutex_unlock(&pcm->lock);
652 dai_map->port = NULL;
656 hdac_hdmi_query_cvt_params(struct hdac_device *hdev, struct hdac_hdmi_cvt *cvt)
659 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
662 chans = get_wcaps(hdev, cvt->nid);
663 chans = get_wcaps_channels(chans);
665 cvt->params.channels_min = 2;
667 cvt->params.channels_max = chans;
668 if (chans > hdmi->chmap.channels_max)
669 hdmi->chmap.channels_max = chans;
671 err = snd_hdac_query_supported_pcm(hdev, cvt->nid,
673 &cvt->params.formats,
674 &cvt->params.maxbps);
677 "Failed to query pcm params for nid %d: %d\n",
683 static int hdac_hdmi_fill_widget_info(struct device *dev,
684 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id,
685 void *priv, const char *wname, const char *stream,
686 struct snd_kcontrol_new *wc, int numkc,
687 int (*event)(struct snd_soc_dapm_widget *,
688 struct snd_kcontrol *, int), unsigned short event_flags)
691 w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
696 w->reg = SND_SOC_NOPM;
698 w->kcontrol_news = wc;
699 w->num_kcontrols = numkc;
702 w->event_flags = event_flags;
707 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
708 const char *sink, const char *control, const char *src,
709 int (*handler)(struct snd_soc_dapm_widget *src,
710 struct snd_soc_dapm_widget *sink))
714 route->control = control;
715 route->connected = handler;
718 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_device *hdev,
719 struct hdac_hdmi_port *port)
721 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
722 struct hdac_hdmi_pcm *pcm;
723 struct hdac_hdmi_port *p;
725 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
726 if (list_empty(&pcm->port_list))
729 list_for_each_entry(p, &pcm->port_list, head) {
730 if (p->id == port->id && port->pin == p->pin)
738 static void hdac_hdmi_set_power_state(struct hdac_device *hdev,
739 hda_nid_t nid, unsigned int pwr_state)
744 if (get_wcaps(hdev, nid) & AC_WCAP_POWER) {
745 if (!snd_hdac_check_power_state(hdev, nid, pwr_state)) {
746 for (count = 0; count < 10; count++) {
747 snd_hdac_codec_read(hdev, nid, 0,
748 AC_VERB_SET_POWER_STATE,
750 state = snd_hdac_sync_power_state(hdev,
752 if (!(state & AC_PWRST_ERROR))
759 static void hdac_hdmi_set_amp(struct hdac_device *hdev,
760 hda_nid_t nid, int val)
762 if (get_wcaps(hdev, nid) & AC_WCAP_OUT_AMP)
763 snd_hdac_codec_write(hdev, nid, 0,
764 AC_VERB_SET_AMP_GAIN_MUTE, val);
768 static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w,
769 struct snd_kcontrol *kc, int event)
771 struct hdac_hdmi_port *port = w->priv;
772 struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
773 struct hdac_hdmi_pcm *pcm;
775 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
776 __func__, w->name, event);
778 pcm = hdac_hdmi_get_pcm(hdev, port);
782 /* set the device if pin is mst_capable */
783 if (hdac_hdmi_port_select_set(hdev, port) < 0)
787 case SND_SOC_DAPM_PRE_PMU:
788 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D0);
790 /* Enable out path for this pin widget */
791 snd_hdac_codec_write(hdev, port->pin->nid, 0,
792 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
794 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_UNMUTE);
796 return hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
798 case SND_SOC_DAPM_POST_PMD:
799 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_MUTE);
801 /* Disable out path for this pin widget */
802 snd_hdac_codec_write(hdev, port->pin->nid, 0,
803 AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
805 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D3);
813 static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w,
814 struct snd_kcontrol *kc, int event)
816 struct hdac_hdmi_cvt *cvt = w->priv;
817 struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
818 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
819 struct hdac_hdmi_pcm *pcm;
821 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
822 __func__, w->name, event);
824 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt);
829 case SND_SOC_DAPM_PRE_PMU:
830 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D0);
832 /* Enable transmission */
833 snd_hdac_codec_write(hdev, cvt->nid, 0,
834 AC_VERB_SET_DIGI_CONVERT_1, 1);
836 /* Category Code (CC) to zero */
837 snd_hdac_codec_write(hdev, cvt->nid, 0,
838 AC_VERB_SET_DIGI_CONVERT_2, 0);
840 snd_hdac_codec_write(hdev, cvt->nid, 0,
841 AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag);
842 snd_hdac_codec_write(hdev, cvt->nid, 0,
843 AC_VERB_SET_STREAM_FORMAT, pcm->format);
846 * The connection indices are shared by all converters and
847 * may interfere with each other. Ensure correct
848 * routing for all converters at stream start.
850 hdac_hdmi_verify_connect_sel_all_pins(hdev);
854 case SND_SOC_DAPM_POST_PMD:
855 snd_hdac_codec_write(hdev, cvt->nid, 0,
856 AC_VERB_SET_CHANNEL_STREAMID, 0);
857 snd_hdac_codec_write(hdev, cvt->nid, 0,
858 AC_VERB_SET_STREAM_FORMAT, 0);
860 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D3);
868 static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w,
869 struct snd_kcontrol *kc, int event)
871 struct hdac_hdmi_port *port = w->priv;
872 struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
875 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
876 __func__, w->name, event);
879 kc = w->kcontrols[0];
881 mux_idx = dapm_kcontrol_get_value(kc);
883 /* set the device if pin is mst_capable */
884 if (hdac_hdmi_port_select_set(hdev, port) < 0)
888 snd_hdac_codec_write(hdev, port->pin->nid, 0,
889 AC_VERB_SET_CONNECT_SEL, (mux_idx - 1));
896 * Based on user selection, map the PINs with the PCMs.
898 static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol,
899 struct snd_ctl_elem_value *ucontrol)
902 struct hdac_hdmi_port *p, *p_next;
903 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
904 struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
905 struct snd_soc_dapm_context *dapm = w->dapm;
906 struct hdac_hdmi_port *port = w->priv;
907 struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
908 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
909 struct hdac_hdmi_pcm *pcm;
910 const char *cvt_name = e->texts[ucontrol->value.enumerated.item[0]];
912 ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
919 mutex_lock(&hdmi->pin_mutex);
920 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
921 if (list_empty(&pcm->port_list))
924 list_for_each_entry_safe(p, p_next, &pcm->port_list, head) {
925 if (p == port && p->id == port->id &&
926 p->pin == port->pin) {
927 hdac_hdmi_jack_report_sync(pcm, port, false);
934 * Jack status is not reported during device probe as the
935 * PCMs are not registered by then. So report it here.
937 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
938 if (!strcmp(cvt_name, pcm->cvt->name)) {
939 list_add_tail(&port->head, &pcm->port_list);
940 if (port->eld.monitor_present && port->eld.eld_valid) {
941 hdac_hdmi_jack_report_sync(pcm, port, true);
942 mutex_unlock(&hdmi->pin_mutex);
947 mutex_unlock(&hdmi->pin_mutex);
953 * Ideally the Mux inputs should be based on the num_muxs enumerated, but
954 * the display driver seem to be programming the connection list for the pin
957 * So programming all the possible inputs for the mux, the user has to take
958 * care of selecting the right one and leaving all other inputs selected to
961 static int hdac_hdmi_create_pin_port_muxs(struct hdac_device *hdev,
962 struct hdac_hdmi_port *port,
963 struct snd_soc_dapm_widget *widget,
964 const char *widget_name)
966 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
967 struct hdac_hdmi_pin *pin = port->pin;
968 struct snd_kcontrol_new *kc;
969 struct hdac_hdmi_cvt *cvt;
971 char kc_name[NAME_SIZE];
972 char mux_items[NAME_SIZE];
973 /* To hold inputs to the Pin mux */
974 char *items[HDA_MAX_CONNECTIONS];
976 int num_items = hdmi->num_cvt + 1;
978 kc = devm_kzalloc(&hdev->dev, sizeof(*kc), GFP_KERNEL);
982 se = devm_kzalloc(&hdev->dev, sizeof(*se), GFP_KERNEL);
986 snprintf(kc_name, NAME_SIZE, "Pin %d port %d Input",
988 kc->name = devm_kstrdup(&hdev->dev, kc_name, GFP_KERNEL);
992 kc->private_value = (long)se;
993 kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
995 kc->info = snd_soc_info_enum_double;
996 kc->put = hdac_hdmi_set_pin_port_mux;
997 kc->get = snd_soc_dapm_get_enum_double;
999 se->reg = SND_SOC_NOPM;
1001 /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
1002 se->items = num_items;
1003 se->mask = roundup_pow_of_two(se->items) - 1;
1005 sprintf(mux_items, "NONE");
1006 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
1010 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1012 sprintf(mux_items, "cvt %d", cvt->nid);
1013 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
1018 se->texts = devm_kmemdup(&hdev->dev, items,
1019 (num_items * sizeof(char *)), GFP_KERNEL);
1023 return hdac_hdmi_fill_widget_info(&hdev->dev, widget,
1024 snd_soc_dapm_mux, port, widget_name, NULL, kc, 1,
1025 hdac_hdmi_pin_mux_widget_event,
1026 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG);
1029 /* Add cvt <- input <- mux route map */
1030 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_device *hdev,
1031 struct snd_soc_dapm_widget *widgets,
1032 struct snd_soc_dapm_route *route, int rindex)
1034 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1035 const struct snd_kcontrol_new *kc;
1036 struct soc_enum *se;
1037 int mux_index = hdmi->num_cvt + hdmi->num_ports;
1040 for (i = 0; i < hdmi->num_ports; i++) {
1041 kc = widgets[mux_index].kcontrol_news;
1042 se = (struct soc_enum *)kc->private_value;
1043 for (j = 0; j < hdmi->num_cvt; j++) {
1044 hdac_hdmi_fill_route(&route[rindex],
1045 widgets[mux_index].name,
1047 widgets[j].name, NULL);
1057 * Widgets are added in the below sequence
1058 * Converter widgets for num converters enumerated
1059 * Pin-port widgets for num ports for Pins enumerated
1060 * Pin-port mux widgets to represent connenction list of pin widget
1062 * For each port, one Mux and One output widget is added
1063 * Total widgets elements = num_cvt + (num_ports * 2);
1065 * Routes are added as below:
1066 * pin-port mux -> pin (based on num_ports)
1067 * cvt -> "Input sel control" -> pin-port_mux
1069 * Total route elements:
1070 * num_ports + (pin_muxes * num_cvt)
1072 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
1074 struct snd_soc_dapm_widget *widgets;
1075 struct snd_soc_dapm_route *route;
1076 struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
1077 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1078 struct snd_soc_dai_driver *dai_drv = hdmi->dai_drv;
1079 char widget_name[NAME_SIZE];
1080 struct hdac_hdmi_cvt *cvt;
1081 struct hdac_hdmi_pin *pin;
1082 int ret, i = 0, num_routes = 0, j;
1084 if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
1087 widgets = devm_kzalloc(dapm->dev, (sizeof(*widgets) *
1088 ((2 * hdmi->num_ports) + hdmi->num_cvt)),
1094 /* DAPM widgets to represent each converter widget */
1095 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1096 sprintf(widget_name, "Converter %d", cvt->nid);
1097 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1098 snd_soc_dapm_aif_in, cvt,
1099 widget_name, dai_drv[i].playback.stream_name, NULL, 0,
1100 hdac_hdmi_cvt_output_widget_event,
1101 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
1107 list_for_each_entry(pin, &hdmi->pin_list, head) {
1108 for (j = 0; j < pin->num_ports; j++) {
1109 sprintf(widget_name, "hif%d-%d Output",
1110 pin->nid, pin->ports[j].id);
1111 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1112 snd_soc_dapm_output, &pin->ports[j],
1113 widget_name, NULL, NULL, 0,
1114 hdac_hdmi_pin_output_widget_event,
1115 SND_SOC_DAPM_PRE_PMU |
1116 SND_SOC_DAPM_POST_PMD);
1119 pin->ports[j].output_pin = widgets[i].name;
1124 /* DAPM widgets to represent the connection list to pin widget */
1125 list_for_each_entry(pin, &hdmi->pin_list, head) {
1126 for (j = 0; j < pin->num_ports; j++) {
1127 sprintf(widget_name, "Pin%d-Port%d Mux",
1128 pin->nid, pin->ports[j].id);
1129 ret = hdac_hdmi_create_pin_port_muxs(hdev,
1130 &pin->ports[j], &widgets[i],
1136 /* For cvt to pin_mux mapping */
1137 num_routes += hdmi->num_cvt;
1139 /* For pin_mux to pin mapping */
1144 route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
1150 /* Add pin <- NULL <- mux route map */
1151 list_for_each_entry(pin, &hdmi->pin_list, head) {
1152 for (j = 0; j < pin->num_ports; j++) {
1153 int sink_index = i + hdmi->num_cvt;
1154 int src_index = sink_index + pin->num_ports *
1157 hdac_hdmi_fill_route(&route[i],
1158 widgets[sink_index].name, NULL,
1159 widgets[src_index].name, NULL);
1164 hdac_hdmi_add_pinmux_cvt_route(hdev, widgets, route, i);
1166 snd_soc_dapm_new_controls(dapm, widgets,
1167 ((2 * hdmi->num_ports) + hdmi->num_cvt));
1169 snd_soc_dapm_add_routes(dapm, route, num_routes);
1170 snd_soc_dapm_new_widgets(dapm->card);
1176 static int hdac_hdmi_init_dai_map(struct hdac_device *hdev)
1178 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1179 struct hdac_hdmi_dai_port_map *dai_map;
1180 struct hdac_hdmi_cvt *cvt;
1183 if (list_empty(&hdmi->cvt_list))
1186 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1187 dai_map = &hdmi->dai_map[dai_id];
1188 dai_map->dai_id = dai_id;
1193 if (dai_id == HDA_MAX_CVTS) {
1194 dev_warn(&hdev->dev,
1195 "Max dais supported: %d\n", dai_id);
1203 static int hdac_hdmi_add_cvt(struct hdac_device *hdev, hda_nid_t nid)
1205 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1206 struct hdac_hdmi_cvt *cvt;
1207 char name[NAME_SIZE];
1209 cvt = devm_kzalloc(&hdev->dev, sizeof(*cvt), GFP_KERNEL);
1214 sprintf(name, "cvt %d", cvt->nid);
1215 cvt->name = devm_kstrdup(&hdev->dev, name, GFP_KERNEL);
1219 list_add_tail(&cvt->head, &hdmi->cvt_list);
1222 return hdac_hdmi_query_cvt_params(hdev, cvt);
1225 static int hdac_hdmi_parse_eld(struct hdac_device *hdev,
1226 struct hdac_hdmi_port *port)
1228 unsigned int ver, mnl;
1230 ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
1231 >> DRM_ELD_VER_SHIFT;
1233 if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
1234 dev_err(&hdev->dev, "HDMI: Unknown ELD version %d\n", ver);
1238 mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
1239 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
1241 if (mnl > ELD_MAX_MNL) {
1242 dev_err(&hdev->dev, "HDMI: MNL Invalid %d\n", mnl);
1246 port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER];
1251 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin,
1252 struct hdac_hdmi_port *port)
1254 struct hdac_device *hdev = pin->hdev;
1255 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1256 struct hdac_hdmi_pcm *pcm;
1259 bool eld_valid, eld_changed;
1265 * In case of non MST pin, get_eld info API expectes port
1268 mutex_lock(&hdmi->pin_mutex);
1269 port->eld.monitor_present = false;
1271 if (pin->mst_capable)
1274 size = snd_hdac_acomp_get_eld(hdev, pin->nid, port_id,
1275 &port->eld.monitor_present,
1276 port->eld.eld_buffer,
1280 size = min(size, ELD_MAX_SIZE);
1281 if (hdac_hdmi_parse_eld(hdev, port) < 0)
1285 eld_valid = port->eld.eld_valid;
1288 port->eld.eld_valid = true;
1289 port->eld.eld_size = size;
1291 port->eld.eld_valid = false;
1292 port->eld.eld_size = 0;
1295 eld_changed = (eld_valid != port->eld.eld_valid);
1297 pcm = hdac_hdmi_get_pcm(hdev, port);
1299 if (!port->eld.monitor_present || !port->eld.eld_valid) {
1301 dev_err(&hdev->dev, "%s: disconnect for pin:port %d:%d\n",
1302 __func__, pin->nid, port->id);
1305 * PCMs are not registered during device probe, so don't
1306 * report jack here. It will be done in usermode mux
1310 hdac_hdmi_jack_report(pcm, port, false);
1311 schedule_work(&port->dapm_work);
1314 mutex_unlock(&hdmi->pin_mutex);
1318 if (port->eld.monitor_present && port->eld.eld_valid) {
1320 hdac_hdmi_jack_report(pcm, port, true);
1321 schedule_work(&port->dapm_work);
1324 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
1325 port->eld.eld_buffer, port->eld.eld_size, false);
1328 mutex_unlock(&hdmi->pin_mutex);
1330 if (eld_changed && pcm)
1331 snd_ctl_notify(hdmi->card,
1332 SNDRV_CTL_EVENT_MASK_VALUE |
1333 SNDRV_CTL_EVENT_MASK_INFO,
1337 static int hdac_hdmi_add_ports(struct hdac_device *hdev,
1338 struct hdac_hdmi_pin *pin)
1340 struct hdac_hdmi_port *ports;
1341 int max_ports = HDA_MAX_PORTS;
1345 * FIXME: max_port may vary for each platform, so pass this as
1346 * as driver data or query from i915 interface when this API is
1350 ports = devm_kcalloc(&hdev->dev, max_ports, sizeof(*ports), GFP_KERNEL);
1354 for (i = 0; i < max_ports; i++) {
1357 INIT_WORK(&ports[i].dapm_work, hdac_hdmi_jack_dapm_work);
1360 pin->num_ports = max_ports;
1364 static int hdac_hdmi_add_pin(struct hdac_device *hdev, hda_nid_t nid)
1366 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1367 struct hdac_hdmi_pin *pin;
1370 pin = devm_kzalloc(&hdev->dev, sizeof(*pin), GFP_KERNEL);
1375 pin->mst_capable = false;
1377 ret = hdac_hdmi_add_ports(hdev, pin);
1381 list_add_tail(&pin->head, &hdmi->pin_list);
1383 hdmi->num_ports += pin->num_ports;
1388 #define INTEL_VENDOR_NID 0x08
1389 #define INTEL_GLK_VENDOR_NID 0x0b
1390 #define INTEL_GET_VENDOR_VERB 0xf81
1391 #define INTEL_SET_VENDOR_VERB 0x781
1392 #define INTEL_EN_DP12 0x02 /* enable DP 1.2 features */
1393 #define INTEL_EN_ALL_PIN_CVTS 0x01 /* enable 2nd & 3rd pins and convertors */
1395 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdev)
1397 unsigned int vendor_param;
1398 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1399 unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1401 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1402 INTEL_GET_VENDOR_VERB, 0);
1403 if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1406 vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1407 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1408 INTEL_SET_VENDOR_VERB, vendor_param);
1409 if (vendor_param == -1)
1413 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdev)
1415 unsigned int vendor_param;
1416 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1417 unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1419 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1420 INTEL_GET_VENDOR_VERB, 0);
1421 if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1424 /* enable DP1.2 mode */
1425 vendor_param |= INTEL_EN_DP12;
1426 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1427 INTEL_SET_VENDOR_VERB, vendor_param);
1428 if (vendor_param == -1)
1433 static int hdac_hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
1434 struct snd_ctl_elem_info *uinfo)
1436 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1437 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1438 struct hdac_hdmi_pcm *pcm;
1439 struct hdac_hdmi_port *port;
1440 struct hdac_hdmi_eld *eld;
1442 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
1445 pcm = get_hdmi_pcm_from_id(hdmi, kcontrol->id.device);
1447 dev_dbg(component->dev, "%s: no pcm, device %d\n", __func__,
1448 kcontrol->id.device);
1452 if (list_empty(&pcm->port_list)) {
1453 dev_dbg(component->dev, "%s: empty port list, device %d\n",
1454 __func__, kcontrol->id.device);
1458 mutex_lock(&hdmi->pin_mutex);
1460 list_for_each_entry(port, &pcm->port_list, head) {
1463 if (eld->eld_valid) {
1464 uinfo->count = eld->eld_size;
1469 mutex_unlock(&hdmi->pin_mutex);
1474 static int hdac_hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
1475 struct snd_ctl_elem_value *ucontrol)
1477 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1478 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1479 struct hdac_hdmi_pcm *pcm;
1480 struct hdac_hdmi_port *port;
1481 struct hdac_hdmi_eld *eld;
1483 memset(ucontrol->value.bytes.data, 0, sizeof(ucontrol->value.bytes.data));
1485 pcm = get_hdmi_pcm_from_id(hdmi, kcontrol->id.device);
1487 dev_dbg(component->dev, "%s: no pcm, device %d\n", __func__,
1488 kcontrol->id.device);
1492 if (list_empty(&pcm->port_list)) {
1493 dev_dbg(component->dev, "%s: empty port list, device %d\n",
1494 __func__, kcontrol->id.device);
1498 mutex_lock(&hdmi->pin_mutex);
1500 list_for_each_entry(port, &pcm->port_list, head) {
1503 if (!eld->eld_valid)
1506 if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data) ||
1507 eld->eld_size > ELD_MAX_SIZE) {
1508 mutex_unlock(&hdmi->pin_mutex);
1510 dev_err(component->dev, "%s: buffer too small, device %d eld_size %d\n",
1511 __func__, kcontrol->id.device, eld->eld_size);
1516 memcpy(ucontrol->value.bytes.data, eld->eld_buffer,
1521 mutex_unlock(&hdmi->pin_mutex);
1526 static int hdac_hdmi_create_eld_ctl(struct snd_soc_component *component, struct hdac_hdmi_pcm *pcm)
1528 struct snd_kcontrol *kctl;
1529 struct snd_kcontrol_new hdmi_eld_ctl = {
1530 .access = SNDRV_CTL_ELEM_ACCESS_READ |
1531 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
1532 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1534 .info = hdac_hdmi_eld_ctl_info,
1535 .get = hdac_hdmi_eld_ctl_get,
1536 .device = pcm->pcm_id,
1539 /* add ELD ctl with the device number corresponding to the PCM stream */
1540 kctl = snd_ctl_new1(&hdmi_eld_ctl, component);
1544 pcm->eld_ctl = kctl;
1546 return snd_ctl_add(component->card->snd_card, kctl);
1549 static const struct snd_soc_dai_ops hdmi_dai_ops = {
1550 .startup = hdac_hdmi_pcm_open,
1551 .shutdown = hdac_hdmi_pcm_close,
1552 .hw_params = hdac_hdmi_set_hw_params,
1553 .set_stream = hdac_hdmi_set_stream,
1557 * Each converter can support a stream independently. So a dai is created
1558 * based on the number of converter queried.
1560 static int hdac_hdmi_create_dais(struct hdac_device *hdev,
1561 struct snd_soc_dai_driver **dais,
1562 struct hdac_hdmi_priv *hdmi, int num_dais)
1564 struct snd_soc_dai_driver *hdmi_dais;
1565 struct hdac_hdmi_cvt *cvt;
1566 char name[NAME_SIZE], dai_name[NAME_SIZE];
1569 unsigned int rate_max = 384000, rate_min = 8000;
1573 hdmi_dais = devm_kzalloc(&hdev->dev,
1574 (sizeof(*hdmi_dais) * num_dais),
1579 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1580 ret = snd_hdac_query_supported_pcm(hdev, cvt->nid,
1581 &rates, &formats, &bps);
1585 /* Filter out 44.1, 88.2 and 176.4Khz */
1586 rates &= ~(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_88200 |
1587 SNDRV_PCM_RATE_176400);
1591 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1592 hdmi_dais[i].name = devm_kstrdup(&hdev->dev,
1593 dai_name, GFP_KERNEL);
1595 if (!hdmi_dais[i].name)
1598 snprintf(name, sizeof(name), "hifi%d", i+1);
1599 hdmi_dais[i].playback.stream_name =
1600 devm_kstrdup(&hdev->dev, name, GFP_KERNEL);
1601 if (!hdmi_dais[i].playback.stream_name)
1605 * Set caps based on capability queried from the converter.
1606 * It will be constrained runtime based on ELD queried.
1608 hdmi_dais[i].playback.formats = formats;
1609 hdmi_dais[i].playback.rates = rates;
1610 hdmi_dais[i].playback.rate_max = rate_max;
1611 hdmi_dais[i].playback.rate_min = rate_min;
1612 hdmi_dais[i].playback.channels_min = 2;
1613 hdmi_dais[i].playback.channels_max = 2;
1614 hdmi_dais[i].playback.sig_bits = bps;
1615 hdmi_dais[i].ops = &hdmi_dai_ops;
1620 hdmi->dai_drv = hdmi_dais;
1626 * Parse all nodes and store the cvt/pin nids in array
1627 * Add one time initialization for pin and cvt widgets
1629 static int hdac_hdmi_parse_and_map_nid(struct hdac_device *hdev,
1630 struct snd_soc_dai_driver **dais, int *num_dais)
1634 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1637 hdac_hdmi_skl_enable_all_pins(hdev);
1638 hdac_hdmi_skl_enable_dp12(hdev);
1640 num_nodes = snd_hdac_get_sub_nodes(hdev, hdev->afg, &nid);
1641 if (!nid || num_nodes <= 0) {
1642 dev_warn(&hdev->dev, "HDMI: failed to get afg sub nodes\n");
1646 for (i = 0; i < num_nodes; i++, nid++) {
1650 caps = get_wcaps(hdev, nid);
1651 type = get_wcaps_type(caps);
1653 if (!(caps & AC_WCAP_DIGITAL))
1658 case AC_WID_AUD_OUT:
1659 ret = hdac_hdmi_add_cvt(hdev, nid);
1665 ret = hdac_hdmi_add_pin(hdev, nid);
1672 if (!hdmi->num_pin || !hdmi->num_cvt) {
1674 dev_err(&hdev->dev, "Bad pin/cvt setup in %s\n", __func__);
1678 ret = hdac_hdmi_create_dais(hdev, dais, hdmi, hdmi->num_cvt);
1680 dev_err(&hdev->dev, "Failed to create dais with err: %d\n",
1685 *num_dais = hdmi->num_cvt;
1686 ret = hdac_hdmi_init_dai_map(hdev);
1688 dev_err(&hdev->dev, "Failed to init DAI map with err: %d\n",
1693 static int hdac_hdmi_pin2port(void *aptr, int pin)
1695 return pin - 4; /* map NID 0x05 -> port #1 */
1698 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
1700 struct hdac_device *hdev = aptr;
1701 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1702 struct hdac_hdmi_pin *pin;
1703 struct hdac_hdmi_port *hport = NULL;
1704 struct snd_soc_component *component = hdmi->component;
1707 /* Don't know how this mapping is derived */
1708 hda_nid_t pin_nid = port + 0x04;
1710 dev_dbg(&hdev->dev, "%s: for pin:%d port=%d\n", __func__,
1714 * skip notification during system suspend (but not in runtime PM);
1715 * the state will be updated at resume. Also since the ELD and
1716 * connection states are updated in anyway at the end of the resume,
1717 * we can skip it when received during PM process.
1719 if (snd_power_get_state(component->card->snd_card) !=
1723 if (atomic_read(&hdev->in_pm))
1726 list_for_each_entry(pin, &hdmi->pin_list, head) {
1727 if (pin->nid != pin_nid)
1730 /* In case of non MST pin, pipe is -1 */
1732 pin->mst_capable = false;
1733 /* if not MST, default is port[0] */
1734 hport = &pin->ports[0];
1736 for (i = 0; i < pin->num_ports; i++) {
1737 pin->mst_capable = true;
1738 if (pin->ports[i].id == pipe) {
1739 hport = &pin->ports[i];
1746 hdac_hdmi_present_sense(pin, hport);
1751 static struct drm_audio_component_audio_ops aops = {
1752 .pin2port = hdac_hdmi_pin2port,
1753 .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1756 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1759 struct snd_soc_pcm_runtime *rtd;
1761 for_each_card_rtds(card, rtd) {
1762 if (rtd->pcm && (rtd->pcm->device == device))
1769 /* create jack pin kcontrols */
1770 static int create_fill_jack_kcontrols(struct snd_soc_card *card,
1771 struct hdac_device *hdev)
1773 struct hdac_hdmi_pin *pin;
1774 struct snd_kcontrol_new *kc;
1777 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1778 struct snd_soc_component *component = hdmi->component;
1780 kc = devm_kcalloc(component->dev, hdmi->num_ports,
1781 sizeof(*kc), GFP_KERNEL);
1786 list_for_each_entry(pin, &hdmi->pin_list, head) {
1787 for (j = 0; j < pin->num_ports; j++) {
1788 name = devm_kasprintf(component->dev, GFP_KERNEL,
1790 pin->nid, pin->ports[j].id);
1794 kc[i].name = devm_kasprintf(component->dev, GFP_KERNEL,
1799 kc[i].private_value = (unsigned long)name;
1800 kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1802 kc[i].info = snd_soc_dapm_info_pin_switch;
1803 kc[i].put = snd_soc_dapm_put_pin_switch;
1804 kc[i].get = snd_soc_dapm_get_pin_switch;
1809 return snd_soc_add_card_controls(card, kc, i);
1812 int hdac_hdmi_jack_port_init(struct snd_soc_component *component,
1813 struct snd_soc_dapm_context *dapm)
1815 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1816 struct hdac_device *hdev = hdmi->hdev;
1817 struct hdac_hdmi_pin *pin;
1818 struct snd_soc_dapm_widget *widgets;
1819 struct snd_soc_dapm_route *route;
1820 char w_name[NAME_SIZE];
1823 widgets = devm_kcalloc(dapm->dev, hdmi->num_ports,
1824 sizeof(*widgets), GFP_KERNEL);
1829 route = devm_kcalloc(dapm->dev, hdmi->num_ports,
1830 sizeof(*route), GFP_KERNEL);
1834 /* create Jack DAPM widget */
1835 list_for_each_entry(pin, &hdmi->pin_list, head) {
1836 for (j = 0; j < pin->num_ports; j++) {
1837 snprintf(w_name, sizeof(w_name), "hif%d-%d Jack",
1838 pin->nid, pin->ports[j].id);
1840 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1841 snd_soc_dapm_spk, NULL,
1842 w_name, NULL, NULL, 0, NULL, 0);
1846 pin->ports[j].jack_pin = widgets[i].name;
1847 pin->ports[j].dapm = dapm;
1849 /* add to route from Jack widget to output */
1850 hdac_hdmi_fill_route(&route[i], pin->ports[j].jack_pin,
1851 NULL, pin->ports[j].output_pin, NULL);
1857 /* Add Route from Jack widget to the output widget */
1858 ret = snd_soc_dapm_new_controls(dapm, widgets, hdmi->num_ports);
1862 ret = snd_soc_dapm_add_routes(dapm, route, hdmi->num_ports);
1866 ret = snd_soc_dapm_new_widgets(dapm->card);
1870 /* Add Jack Pin switch Kcontrol */
1871 ret = create_fill_jack_kcontrols(dapm->card, hdev);
1876 /* default set the Jack Pin switch to OFF */
1877 list_for_each_entry(pin, &hdmi->pin_list, head) {
1878 for (j = 0; j < pin->num_ports; j++)
1879 snd_soc_dapm_disable_pin(pin->ports[j].dapm,
1880 pin->ports[j].jack_pin);
1885 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_port_init);
1887 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device,
1888 struct snd_soc_jack *jack)
1890 struct snd_soc_component *component = dai->component;
1891 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1892 struct hdac_device *hdev = hdmi->hdev;
1893 struct hdac_hdmi_pcm *pcm;
1894 struct snd_pcm *snd_pcm;
1898 * this is a new PCM device, create new pcm and
1899 * add to the pcm list
1901 pcm = devm_kzalloc(&hdev->dev, sizeof(*pcm), GFP_KERNEL);
1904 pcm->pcm_id = device;
1905 pcm->cvt = hdmi->dai_map[dai->id].cvt;
1906 pcm->jack_event = 0;
1908 mutex_init(&pcm->lock);
1909 INIT_LIST_HEAD(&pcm->port_list);
1910 snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1912 err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1915 "chmap control add failed with err: %d for pcm: %d\n",
1921 /* add control for ELD Bytes */
1922 err = hdac_hdmi_create_eld_ctl(component, pcm);
1925 "eld control add failed with err: %d for pcm: %d\n",
1930 list_add_tail(&pcm->head, &hdmi->pcm_list);
1934 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1936 static void hdac_hdmi_present_sense_all_pins(struct hdac_device *hdev,
1937 struct hdac_hdmi_priv *hdmi, bool detect_pin_caps)
1940 struct hdac_hdmi_pin *pin;
1942 list_for_each_entry(pin, &hdmi->pin_list, head) {
1943 if (detect_pin_caps) {
1945 if (hdac_hdmi_get_port_len(hdev, pin->nid) == 0)
1946 pin->mst_capable = false;
1948 pin->mst_capable = true;
1951 for (i = 0; i < pin->num_ports; i++) {
1952 if (!pin->mst_capable && i > 0)
1955 hdac_hdmi_present_sense(pin, &pin->ports[i]);
1960 static int hdmi_codec_probe(struct snd_soc_component *component)
1962 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1963 struct hdac_device *hdev = hdmi->hdev;
1964 struct snd_soc_dapm_context *dapm =
1965 snd_soc_component_get_dapm(component);
1966 struct hdac_ext_link *hlink;
1969 hdmi->component = component;
1972 * hold the ref while we probe, also no need to drop the ref on
1973 * exit, we call pm_runtime_suspend() so that will do for us
1975 hlink = snd_hdac_ext_bus_get_hlink_by_name(hdev->bus, dev_name(&hdev->dev));
1977 dev_err(&hdev->dev, "hdac link not found\n");
1981 snd_hdac_ext_bus_link_get(hdev->bus, hlink);
1983 ret = create_fill_widget_route_map(dapm);
1987 aops.audio_ptr = hdev;
1988 ret = snd_hdac_acomp_register_notifier(hdev->bus, &aops);
1990 dev_err(&hdev->dev, "notifier register failed: err: %d\n", ret);
1994 hdac_hdmi_present_sense_all_pins(hdev, hdmi, true);
1995 /* Imp: Store the card pointer in hda_codec */
1996 hdmi->card = dapm->card->snd_card;
1999 * Setup a device_link between card device and HDMI codec device.
2000 * The card device is the consumer and the HDMI codec device is
2001 * the supplier. With this setting, we can make sure that the audio
2002 * domain in display power will be always turned on before operating
2003 * on the HDMI audio codec registers.
2004 * Let's use the flag DL_FLAG_AUTOREMOVE_CONSUMER. This can make
2005 * sure the device link is freed when the machine driver is removed.
2007 device_link_add(component->card->dev, &hdev->dev, DL_FLAG_RPM_ACTIVE |
2008 DL_FLAG_AUTOREMOVE_CONSUMER);
2010 * hdac_device core already sets the state to active and calls
2011 * get_noresume. So enable runtime and set the device to suspend.
2013 pm_runtime_enable(&hdev->dev);
2014 pm_runtime_put(&hdev->dev);
2015 pm_runtime_suspend(&hdev->dev);
2020 static void hdmi_codec_remove(struct snd_soc_component *component)
2022 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
2023 struct hdac_device *hdev = hdmi->hdev;
2026 ret = snd_hdac_acomp_register_notifier(hdev->bus, NULL);
2028 dev_err(&hdev->dev, "notifier unregister failed: err: %d\n",
2031 pm_runtime_disable(&hdev->dev);
2034 #ifdef CONFIG_PM_SLEEP
2035 static int hdmi_codec_resume(struct device *dev)
2037 struct hdac_device *hdev = dev_to_hdac_dev(dev);
2038 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2041 ret = pm_runtime_force_resume(dev);
2045 * As the ELD notify callback request is not entertained while the
2046 * device is in suspend state. Need to manually check detection of
2047 * all pins here. pin capablity change is not support, so use the
2048 * already set pin caps.
2050 * NOTE: this is safe to call even if the codec doesn't actually resume.
2051 * The pin check involves only with DRM audio component hooks, so it
2052 * works even if the HD-audio side is still dreaming peacefully.
2054 hdac_hdmi_present_sense_all_pins(hdev, hdmi, false);
2058 #define hdmi_codec_resume NULL
2061 static const struct snd_soc_component_driver hdmi_hda_codec = {
2062 .probe = hdmi_codec_probe,
2063 .remove = hdmi_codec_remove,
2064 .use_pmdown_time = 1,
2068 static void hdac_hdmi_get_chmap(struct hdac_device *hdev, int pcm_idx,
2069 unsigned char *chmap)
2071 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2072 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2074 memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap));
2077 static void hdac_hdmi_set_chmap(struct hdac_device *hdev, int pcm_idx,
2078 unsigned char *chmap, int prepared)
2080 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2081 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2082 struct hdac_hdmi_port *port;
2087 if (list_empty(&pcm->port_list))
2090 mutex_lock(&pcm->lock);
2091 pcm->chmap_set = true;
2092 memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap));
2093 list_for_each_entry(port, &pcm->port_list, head)
2095 hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
2096 mutex_unlock(&pcm->lock);
2099 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdev, int pcm_idx)
2101 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2102 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2107 if (list_empty(&pcm->port_list))
2113 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdev, int pcm_idx)
2115 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2116 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2117 struct hdac_hdmi_port *port;
2122 if (list_empty(&pcm->port_list))
2125 port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head);
2127 if (!port || !port->eld.eld_valid)
2130 return port->eld.info.spk_alloc;
2133 static struct hdac_hdmi_drv_data intel_glk_drv_data = {
2134 .vendor_nid = INTEL_GLK_VENDOR_NID,
2137 static struct hdac_hdmi_drv_data intel_drv_data = {
2138 .vendor_nid = INTEL_VENDOR_NID,
2141 static int hdac_hdmi_dev_probe(struct hdac_device *hdev)
2143 struct hdac_hdmi_priv *hdmi_priv;
2144 struct snd_soc_dai_driver *hdmi_dais = NULL;
2145 struct hdac_ext_link *hlink;
2148 struct hdac_driver *hdrv = drv_to_hdac_driver(hdev->dev.driver);
2149 const struct hda_device_id *hdac_id = hdac_get_device_id(hdev, hdrv);
2151 /* hold the ref while we probe */
2152 hlink = snd_hdac_ext_bus_get_hlink_by_name(hdev->bus, dev_name(&hdev->dev));
2154 dev_err(&hdev->dev, "hdac link not found\n");
2158 snd_hdac_ext_bus_link_get(hdev->bus, hlink);
2160 hdmi_priv = devm_kzalloc(&hdev->dev, sizeof(*hdmi_priv), GFP_KERNEL);
2161 if (hdmi_priv == NULL)
2164 snd_hdac_register_chmap_ops(hdev, &hdmi_priv->chmap);
2165 hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
2166 hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
2167 hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
2168 hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
2169 hdmi_priv->hdev = hdev;
2174 if (hdac_id->driver_data)
2175 hdmi_priv->drv_data =
2176 (struct hdac_hdmi_drv_data *)hdac_id->driver_data;
2178 hdmi_priv->drv_data = &intel_drv_data;
2180 dev_set_drvdata(&hdev->dev, hdmi_priv);
2182 INIT_LIST_HEAD(&hdmi_priv->pin_list);
2183 INIT_LIST_HEAD(&hdmi_priv->cvt_list);
2184 INIT_LIST_HEAD(&hdmi_priv->pcm_list);
2185 mutex_init(&hdmi_priv->pin_mutex);
2188 * Turned off in the runtime_suspend during the first explicit
2189 * pm_runtime_suspend call.
2191 snd_hdac_display_power(hdev->bus, hdev->addr, true);
2193 ret = hdac_hdmi_parse_and_map_nid(hdev, &hdmi_dais, &num_dais);
2196 "Failed in parse and map nid with err: %d\n", ret);
2199 snd_hdac_refresh_widgets(hdev);
2201 /* ASoC specific initialization */
2202 ret = devm_snd_soc_register_component(&hdev->dev, &hdmi_hda_codec,
2203 hdmi_dais, num_dais);
2205 snd_hdac_ext_bus_link_put(hdev->bus, hlink);
2210 static void clear_dapm_works(struct hdac_device *hdev)
2212 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2213 struct hdac_hdmi_pin *pin;
2216 list_for_each_entry(pin, &hdmi->pin_list, head)
2217 for (i = 0; i < pin->num_ports; i++)
2218 cancel_work_sync(&pin->ports[i].dapm_work);
2221 static int hdac_hdmi_dev_remove(struct hdac_device *hdev)
2223 clear_dapm_works(hdev);
2224 snd_hdac_display_power(hdev->bus, hdev->addr, false);
2230 static int hdac_hdmi_runtime_suspend(struct device *dev)
2232 struct hdac_device *hdev = dev_to_hdac_dev(dev);
2233 struct hdac_bus *bus = hdev->bus;
2234 struct hdac_ext_link *hlink;
2236 dev_dbg(dev, "Enter: %s\n", __func__);
2238 /* controller may not have been initialized for the first time */
2244 * codec_read is preferred over codec_write to set the power state.
2245 * This way verb is send to set the power state and response
2246 * is received. So setting power state is ensured without using loop
2247 * to read the state.
2249 snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2252 hlink = snd_hdac_ext_bus_get_hlink_by_name(bus, dev_name(dev));
2254 dev_err(dev, "hdac link not found\n");
2258 snd_hdac_codec_link_down(hdev);
2259 snd_hdac_ext_bus_link_put(bus, hlink);
2261 snd_hdac_display_power(bus, hdev->addr, false);
2266 static int hdac_hdmi_runtime_resume(struct device *dev)
2268 struct hdac_device *hdev = dev_to_hdac_dev(dev);
2269 struct hdac_bus *bus = hdev->bus;
2270 struct hdac_ext_link *hlink;
2272 dev_dbg(dev, "Enter: %s\n", __func__);
2274 /* controller may not have been initialized for the first time */
2278 hlink = snd_hdac_ext_bus_get_hlink_by_name(bus, dev_name(dev));
2280 dev_err(dev, "hdac link not found\n");
2284 snd_hdac_ext_bus_link_get(bus, hlink);
2285 snd_hdac_codec_link_up(hdev);
2287 snd_hdac_display_power(bus, hdev->addr, true);
2289 hdac_hdmi_skl_enable_all_pins(hdev);
2290 hdac_hdmi_skl_enable_dp12(hdev);
2293 snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2299 #define hdac_hdmi_runtime_suspend NULL
2300 #define hdac_hdmi_runtime_resume NULL
2303 static const struct dev_pm_ops hdac_hdmi_pm = {
2304 SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
2305 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, hdmi_codec_resume)
2308 static const struct hda_device_id hdmi_list[] = {
2309 HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
2310 HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
2311 HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
2312 HDA_CODEC_EXT_ENTRY(0x8086280c, 0x100000, "Cannonlake HDMI",
2313 &intel_glk_drv_data),
2314 HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI",
2315 &intel_glk_drv_data),
2319 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
2321 static struct hdac_driver hdmi_driver = {
2323 .name = "HDMI HDA Codec",
2324 .pm = &hdac_hdmi_pm,
2326 .id_table = hdmi_list,
2327 .probe = hdac_hdmi_dev_probe,
2328 .remove = hdac_hdmi_dev_remove,
2331 static int __init hdmi_init(void)
2333 return snd_hda_ext_driver_register(&hdmi_driver);
2336 static void __exit hdmi_exit(void)
2338 snd_hda_ext_driver_unregister(&hdmi_driver);
2341 module_init(hdmi_init);
2342 module_exit(hdmi_exit);
2344 MODULE_LICENSE("GPL v2");
2345 MODULE_DESCRIPTION("HDMI HD codec");
2346 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
2347 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");