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 <sound/pcm_params.h>
20 #include <sound/jack.h>
21 #include <sound/soc.h>
22 #include <sound/hdaudio_ext.h>
23 #include <sound/hda_i915.h>
24 #include <sound/pcm_drm_eld.h>
25 #include <sound/hda_chmap.h>
26 #include "../../hda/local.h"
27 #include "hdac_hdmi.h"
31 #define AMP_OUT_MUTE 0xb080
32 #define AMP_OUT_UNMUTE 0xb000
33 #define PIN_OUT (AC_PINCTL_OUT_EN)
35 #define HDA_MAX_CONNECTIONS 32
37 #define HDA_MAX_CVTS 3
38 #define HDA_MAX_PORTS 3
40 #define ELD_MAX_SIZE 256
41 #define ELD_FIXED_BYTES 20
43 #define ELD_VER_CEA_861D 2
44 #define ELD_VER_PARTIAL 31
45 #define ELD_MAX_MNL 16
47 struct hdac_hdmi_cvt_params {
48 unsigned int channels_min;
49 unsigned int channels_max;
55 struct hdac_hdmi_cvt {
56 struct list_head head;
59 struct hdac_hdmi_cvt_params params;
62 /* Currently only spk_alloc, more to be added */
63 struct hdac_hdmi_parsed_eld {
67 struct hdac_hdmi_eld {
71 char eld_buffer[ELD_MAX_SIZE];
72 struct hdac_hdmi_parsed_eld info;
75 struct hdac_hdmi_pin {
76 struct list_head head;
79 struct hdac_hdmi_port *ports;
81 struct hdac_device *hdev;
84 struct hdac_hdmi_port {
85 struct list_head head;
87 struct hdac_hdmi_pin *pin;
89 hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
90 struct hdac_hdmi_eld eld;
93 struct snd_soc_dapm_context *dapm;
94 const char *output_pin;
95 struct work_struct dapm_work;
98 struct hdac_hdmi_pcm {
99 struct list_head head;
101 struct list_head port_list;
102 struct hdac_hdmi_cvt *cvt;
103 struct snd_soc_jack *jack;
108 unsigned char chmap[8]; /* ALSA API channel-map */
111 struct snd_kcontrol *eld_ctl;
114 struct hdac_hdmi_dai_port_map {
116 struct hdac_hdmi_port *port;
117 struct hdac_hdmi_cvt *cvt;
120 struct hdac_hdmi_drv_data {
121 unsigned int vendor_nid;
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;
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;
141 #define hdev_to_hdmi_priv(_hdev) dev_get_drvdata(&(_hdev)->dev)
143 static struct hdac_hdmi_pcm *
144 hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi,
145 struct hdac_hdmi_cvt *cvt)
147 struct hdac_hdmi_pcm *pcm;
149 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
157 static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm,
158 struct hdac_hdmi_port *port, bool is_connect)
160 struct hdac_device *hdev = port->pin->hdev;
162 port->is_connect = is_connect;
165 * Report Jack connect event when a device is connected
166 * for the first time where same PCM is attached to multiple
169 if (pcm->jack_event == 0) {
171 "jack report for pcm=%d\n",
173 snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT,
179 * Report Jack disconnect event when a device is disconnected
180 * is the only last connected device when same PCM is attached
183 if (pcm->jack_event == 1)
184 snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT);
185 if (pcm->jack_event > 0)
190 static void hdac_hdmi_port_dapm_update(struct hdac_hdmi_port *port)
192 if (port->is_connect)
193 snd_soc_dapm_enable_pin(port->dapm, port->jack_pin);
195 snd_soc_dapm_disable_pin(port->dapm, port->jack_pin);
196 snd_soc_dapm_sync(port->dapm);
199 static void hdac_hdmi_jack_dapm_work(struct work_struct *work)
201 struct hdac_hdmi_port *port;
203 port = container_of(work, struct hdac_hdmi_port, dapm_work);
204 hdac_hdmi_port_dapm_update(port);
207 static void hdac_hdmi_jack_report_sync(struct hdac_hdmi_pcm *pcm,
208 struct hdac_hdmi_port *port, bool is_connect)
210 hdac_hdmi_jack_report(pcm, port, is_connect);
211 hdac_hdmi_port_dapm_update(port);
214 /* MST supported verbs */
216 * Get the no devices that can be connected to a port on the Pin widget.
218 static int hdac_hdmi_get_port_len(struct hdac_device *hdev, hda_nid_t nid)
221 unsigned int type, param;
223 caps = get_wcaps(hdev, nid);
224 type = get_wcaps_type(caps);
226 if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN))
229 param = snd_hdac_read_parm_uncached(hdev, nid, AC_PAR_DEVLIST_LEN);
233 return param & AC_DEV_LIST_LEN_MASK;
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.
241 static int hdac_hdmi_port_select_get(struct hdac_device *hdev,
242 struct hdac_hdmi_port *port)
244 return snd_hdac_codec_read(hdev, port->pin->nid,
245 0, AC_VERB_GET_DEVICE_SEL, 0);
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
252 static int hdac_hdmi_port_select_set(struct hdac_device *hdev,
253 struct hdac_hdmi_port *port)
257 if (!port->pin->mst_capable)
260 /* AC_PAR_DEVLIST_LEN is 0 based. */
261 num_ports = hdac_hdmi_get_port_len(hdev, port->pin->nid);
265 * Device List Length is a 0 based integer value indicating the
266 * number of sink device that a MST Pin Widget can support.
268 if (num_ports + 1 < port->id)
271 snd_hdac_codec_write(hdev, port->pin->nid, 0,
272 AC_VERB_SET_DEVICE_SEL, port->id);
274 if (port->id != hdac_hdmi_port_select_get(hdev, port))
277 dev_dbg(&hdev->dev, "Selected the port=%d\n", port->id);
282 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
285 struct hdac_hdmi_pcm *pcm;
287 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
288 if (pcm->pcm_id == pcm_idx)
295 static unsigned int sad_format(const u8 *sad)
297 return ((sad[0] >> 0x3) & 0x1f);
300 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
305 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
308 u64 formats = SNDRV_PCM_FMTBIT_S16;
310 const u8 *sad, *eld_buf = eld;
312 sad = drm_eld_sad(eld_buf);
314 goto format_constraint;
316 for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
317 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
320 * the controller support 20 and 24 bits in 32 bit
321 * container so we set S32
323 if (sad_sample_bits_lpcm(sad) & 0x6)
324 formats |= SNDRV_PCM_FMTBIT_S32;
329 return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
335 hdac_hdmi_set_dip_index(struct hdac_device *hdev, hda_nid_t pin_nid,
336 int packet_index, int byte_index)
340 val = (packet_index << 5) | (byte_index & 0x1f);
341 snd_hdac_codec_write(hdev, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
344 struct dp_audio_infoframe {
347 u8 ver; /* 0x11 << 2 */
349 u8 CC02_CT47; /* match with HDMI infoframe from this on */
353 u8 LFEPBL01_LSV36_DM_INH7;
356 static int hdac_hdmi_setup_audio_infoframe(struct hdac_device *hdev,
357 struct hdac_hdmi_pcm *pcm, struct hdac_hdmi_port *port)
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;
372 ca = snd_hdac_channel_allocation(hdev, port->eld.info.spk_alloc,
373 pcm->channels, pcm->chmap_set, true, pcm->chmap);
375 channels = snd_hdac_get_active_channels(ca);
376 hdmi->chmap.ops.set_channel_count(hdev, cvt->nid, channels);
378 snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
379 pcm->channels, pcm->chmap, pcm->chmap_set);
381 eld_buf = port->eld.eld_buffer;
382 conn_type = drm_eld_get_conn_type(eld_buf);
385 case DRM_ELD_CONN_TYPE_HDMI:
386 hdmi_audio_infoframe_init(&frame);
388 frame.channels = channels;
389 frame.channel_allocation = ca;
391 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
397 case DRM_ELD_CONN_TYPE_DP:
398 memset(&dp_ai, 0, sizeof(dp_ai));
401 dp_ai.ver = 0x11 << 2;
402 dp_ai.CC02_CT47 = channels - 1;
409 dev_err(&hdev->dev, "Invalid connection type: %d\n", conn_type);
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);
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]);
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]);
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);
439 static int hdac_hdmi_set_stream(struct snd_soc_dai *dai,
440 void *stream, int direction)
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;
451 hstream = (struct hdac_stream *)stream;
453 dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, hstream->stream_tag);
455 dai_map = &hdmi->dai_map[dai->id];
457 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
460 pcm->stream_tag = (hstream->stream_tag << 4);
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)
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;
473 dai_map = &hdmi->dai_map[dai->id];
475 format = snd_hdac_calc_stream_format(params_rate(hparams),
476 params_channels(hparams), params_format(hparams),
477 dai->driver->playback.sig_bits, 0);
479 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
483 pcm->format = format;
484 pcm->channels = params_channels(hparams);
489 static int hdac_hdmi_query_port_connlist(struct hdac_device *hdev,
490 struct hdac_hdmi_pin *pin,
491 struct hdac_hdmi_port *port)
493 if (!(get_wcaps(hdev, pin->nid) & AC_WCAP_CONN_LIST)) {
495 "HDMI: pin %d wcaps %#x does not support connection list\n",
496 pin->nid, get_wcaps(hdev, pin->nid));
500 if (hdac_hdmi_port_select_set(hdev, port) < 0)
503 port->num_mux_nids = snd_hdac_get_connections(hdev, pin->nid,
504 port->mux_nids, HDA_MAX_CONNECTIONS);
505 if (port->num_mux_nids == 0)
507 "No connections found for pin:port %d:%d\n",
510 dev_dbg(&hdev->dev, "num_mux_nids %d for pin:port %d:%d\n",
511 port->num_mux_nids, pin->nid, port->id);
513 return port->num_mux_nids;
517 * Query pcm list and return port to which stream is routed.
519 * Also query connection list of the pin, to validate the cvt to port map.
521 * Same stream rendering to multiple ports simultaneously can be done
522 * possibly, but not supported for now in driver. So return the first port
525 static struct hdac_hdmi_port *hdac_hdmi_get_port_from_cvt(
526 struct hdac_device *hdev,
527 struct hdac_hdmi_priv *hdmi,
528 struct hdac_hdmi_cvt *cvt)
530 struct hdac_hdmi_pcm *pcm;
531 struct hdac_hdmi_port *port = NULL;
534 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
535 if (pcm->cvt == cvt) {
536 if (list_empty(&pcm->port_list))
539 list_for_each_entry(port, &pcm->port_list, head) {
540 mutex_lock(&pcm->lock);
541 ret = hdac_hdmi_query_port_connlist(hdev,
543 mutex_unlock(&pcm->lock);
547 for (i = 0; i < port->num_mux_nids; i++) {
548 if (port->mux_nids[i] == cvt->nid &&
549 port->eld.monitor_present &&
561 * Go through all converters and ensure connection is set to
562 * the correct pin as set via kcontrols.
564 static void hdac_hdmi_verify_connect_sel_all_pins(struct hdac_device *hdev)
566 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
567 struct hdac_hdmi_port *port;
568 struct hdac_hdmi_cvt *cvt;
571 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
572 port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt);
573 if (port && port->pin) {
574 snd_hdac_codec_write(hdev, port->pin->nid, 0,
575 AC_VERB_SET_CONNECT_SEL, cvt_idx);
576 dev_dbg(&hdev->dev, "%s: %s set connect %d -> %d\n",
577 __func__, cvt->name, port->pin->nid, cvt_idx);
584 * This tries to get a valid pin and set the HW constraints based on the
585 * ELD. Even if a valid pin is not found return success so that device open
588 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
589 struct snd_soc_dai *dai)
591 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
592 struct hdac_device *hdev = hdmi->hdev;
593 struct hdac_hdmi_dai_port_map *dai_map;
594 struct hdac_hdmi_cvt *cvt;
595 struct hdac_hdmi_port *port;
598 dai_map = &hdmi->dai_map[dai->id];
601 port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt);
604 * To make PA and other userland happy.
605 * userland scans devices so returning error does not help.
609 if ((!port->eld.monitor_present) ||
610 (!port->eld.eld_valid)) {
613 "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n",
614 port->eld.monitor_present, port->eld.eld_valid,
615 port->pin->nid, port->id);
620 dai_map->port = port;
622 ret = hdac_hdmi_eld_limit_formats(substream->runtime,
623 port->eld.eld_buffer);
627 return snd_pcm_hw_constraint_eld(substream->runtime,
628 port->eld.eld_buffer);
631 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
632 struct snd_soc_dai *dai)
634 struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
635 struct hdac_hdmi_dai_port_map *dai_map;
636 struct hdac_hdmi_pcm *pcm;
638 dai_map = &hdmi->dai_map[dai->id];
640 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
643 mutex_lock(&pcm->lock);
644 pcm->chmap_set = false;
645 memset(pcm->chmap, 0, sizeof(pcm->chmap));
647 mutex_unlock(&pcm->lock);
651 dai_map->port = NULL;
655 hdac_hdmi_query_cvt_params(struct hdac_device *hdev, struct hdac_hdmi_cvt *cvt)
658 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
661 chans = get_wcaps(hdev, cvt->nid);
662 chans = get_wcaps_channels(chans);
664 cvt->params.channels_min = 2;
666 cvt->params.channels_max = chans;
667 if (chans > hdmi->chmap.channels_max)
668 hdmi->chmap.channels_max = chans;
670 err = snd_hdac_query_supported_pcm(hdev, cvt->nid,
672 &cvt->params.formats,
673 &cvt->params.maxbps);
676 "Failed to query pcm params for nid %d: %d\n",
682 static int hdac_hdmi_fill_widget_info(struct device *dev,
683 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id,
684 void *priv, const char *wname, const char *stream,
685 struct snd_kcontrol_new *wc, int numkc,
686 int (*event)(struct snd_soc_dapm_widget *,
687 struct snd_kcontrol *, int), unsigned short event_flags)
690 w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
695 w->reg = SND_SOC_NOPM;
697 w->kcontrol_news = wc;
698 w->num_kcontrols = numkc;
701 w->event_flags = event_flags;
706 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
707 const char *sink, const char *control, const char *src,
708 int (*handler)(struct snd_soc_dapm_widget *src,
709 struct snd_soc_dapm_widget *sink))
713 route->control = control;
714 route->connected = handler;
717 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_device *hdev,
718 struct hdac_hdmi_port *port)
720 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
721 struct hdac_hdmi_pcm *pcm = NULL;
722 struct hdac_hdmi_port *p;
724 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
725 if (list_empty(&pcm->port_list))
728 list_for_each_entry(p, &pcm->port_list, head) {
729 if (p->id == port->id && port->pin == p->pin)
737 static void hdac_hdmi_set_power_state(struct hdac_device *hdev,
738 hda_nid_t nid, unsigned int pwr_state)
743 if (get_wcaps(hdev, nid) & AC_WCAP_POWER) {
744 if (!snd_hdac_check_power_state(hdev, nid, pwr_state)) {
745 for (count = 0; count < 10; count++) {
746 snd_hdac_codec_read(hdev, nid, 0,
747 AC_VERB_SET_POWER_STATE,
749 state = snd_hdac_sync_power_state(hdev,
751 if (!(state & AC_PWRST_ERROR))
758 static void hdac_hdmi_set_amp(struct hdac_device *hdev,
759 hda_nid_t nid, int val)
761 if (get_wcaps(hdev, nid) & AC_WCAP_OUT_AMP)
762 snd_hdac_codec_write(hdev, nid, 0,
763 AC_VERB_SET_AMP_GAIN_MUTE, val);
767 static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w,
768 struct snd_kcontrol *kc, int event)
770 struct hdac_hdmi_port *port = w->priv;
771 struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
772 struct hdac_hdmi_pcm *pcm;
774 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
775 __func__, w->name, event);
777 pcm = hdac_hdmi_get_pcm(hdev, port);
781 /* set the device if pin is mst_capable */
782 if (hdac_hdmi_port_select_set(hdev, port) < 0)
786 case SND_SOC_DAPM_PRE_PMU:
787 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D0);
789 /* Enable out path for this pin widget */
790 snd_hdac_codec_write(hdev, port->pin->nid, 0,
791 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
793 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_UNMUTE);
795 return hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
797 case SND_SOC_DAPM_POST_PMD:
798 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_MUTE);
800 /* Disable out path for this pin widget */
801 snd_hdac_codec_write(hdev, port->pin->nid, 0,
802 AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
804 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D3);
812 static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w,
813 struct snd_kcontrol *kc, int event)
815 struct hdac_hdmi_cvt *cvt = w->priv;
816 struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
817 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
818 struct hdac_hdmi_pcm *pcm;
820 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
821 __func__, w->name, event);
823 pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt);
828 case SND_SOC_DAPM_PRE_PMU:
829 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D0);
831 /* Enable transmission */
832 snd_hdac_codec_write(hdev, cvt->nid, 0,
833 AC_VERB_SET_DIGI_CONVERT_1, 1);
835 /* Category Code (CC) to zero */
836 snd_hdac_codec_write(hdev, cvt->nid, 0,
837 AC_VERB_SET_DIGI_CONVERT_2, 0);
839 snd_hdac_codec_write(hdev, cvt->nid, 0,
840 AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag);
841 snd_hdac_codec_write(hdev, cvt->nid, 0,
842 AC_VERB_SET_STREAM_FORMAT, pcm->format);
845 * The connection indices are shared by all converters and
846 * may interfere with each other. Ensure correct
847 * routing for all converters at stream start.
849 hdac_hdmi_verify_connect_sel_all_pins(hdev);
853 case SND_SOC_DAPM_POST_PMD:
854 snd_hdac_codec_write(hdev, cvt->nid, 0,
855 AC_VERB_SET_CHANNEL_STREAMID, 0);
856 snd_hdac_codec_write(hdev, cvt->nid, 0,
857 AC_VERB_SET_STREAM_FORMAT, 0);
859 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D3);
867 static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w,
868 struct snd_kcontrol *kc, int event)
870 struct hdac_hdmi_port *port = w->priv;
871 struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
874 dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
875 __func__, w->name, event);
878 kc = w->kcontrols[0];
880 mux_idx = dapm_kcontrol_get_value(kc);
882 /* set the device if pin is mst_capable */
883 if (hdac_hdmi_port_select_set(hdev, port) < 0)
887 snd_hdac_codec_write(hdev, port->pin->nid, 0,
888 AC_VERB_SET_CONNECT_SEL, (mux_idx - 1));
895 * Based on user selection, map the PINs with the PCMs.
897 static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol,
898 struct snd_ctl_elem_value *ucontrol)
901 struct hdac_hdmi_port *p, *p_next;
902 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
903 struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
904 struct snd_soc_dapm_context *dapm = w->dapm;
905 struct hdac_hdmi_port *port = w->priv;
906 struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
907 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
908 struct hdac_hdmi_pcm *pcm = NULL;
909 const char *cvt_name = e->texts[ucontrol->value.enumerated.item[0]];
911 ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
918 mutex_lock(&hdmi->pin_mutex);
919 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
920 if (list_empty(&pcm->port_list))
923 list_for_each_entry_safe(p, p_next, &pcm->port_list, head) {
924 if (p == port && p->id == port->id &&
925 p->pin == port->pin) {
926 hdac_hdmi_jack_report_sync(pcm, port, false);
933 * Jack status is not reported during device probe as the
934 * PCMs are not registered by then. So report it here.
936 list_for_each_entry(pcm, &hdmi->pcm_list, head) {
937 if (!strcmp(cvt_name, pcm->cvt->name)) {
938 list_add_tail(&port->head, &pcm->port_list);
939 if (port->eld.monitor_present && port->eld.eld_valid) {
940 hdac_hdmi_jack_report_sync(pcm, port, true);
941 mutex_unlock(&hdmi->pin_mutex);
946 mutex_unlock(&hdmi->pin_mutex);
952 * Ideally the Mux inputs should be based on the num_muxs enumerated, but
953 * the display driver seem to be programming the connection list for the pin
956 * So programming all the possible inputs for the mux, the user has to take
957 * care of selecting the right one and leaving all other inputs selected to
960 static int hdac_hdmi_create_pin_port_muxs(struct hdac_device *hdev,
961 struct hdac_hdmi_port *port,
962 struct snd_soc_dapm_widget *widget,
963 const char *widget_name)
965 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
966 struct hdac_hdmi_pin *pin = port->pin;
967 struct snd_kcontrol_new *kc;
968 struct hdac_hdmi_cvt *cvt;
970 char kc_name[NAME_SIZE];
971 char mux_items[NAME_SIZE];
972 /* To hold inputs to the Pin mux */
973 char *items[HDA_MAX_CONNECTIONS];
975 int num_items = hdmi->num_cvt + 1;
977 kc = devm_kzalloc(&hdev->dev, sizeof(*kc), GFP_KERNEL);
981 se = devm_kzalloc(&hdev->dev, sizeof(*se), GFP_KERNEL);
985 snprintf(kc_name, NAME_SIZE, "Pin %d port %d Input",
987 kc->name = devm_kstrdup(&hdev->dev, kc_name, GFP_KERNEL);
991 kc->private_value = (long)se;
992 kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
994 kc->info = snd_soc_info_enum_double;
995 kc->put = hdac_hdmi_set_pin_port_mux;
996 kc->get = snd_soc_dapm_get_enum_double;
998 se->reg = SND_SOC_NOPM;
1000 /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
1001 se->items = num_items;
1002 se->mask = roundup_pow_of_two(se->items) - 1;
1004 sprintf(mux_items, "NONE");
1005 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
1009 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1011 sprintf(mux_items, "cvt %d", cvt->nid);
1012 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
1017 se->texts = devm_kmemdup(&hdev->dev, items,
1018 (num_items * sizeof(char *)), GFP_KERNEL);
1022 return hdac_hdmi_fill_widget_info(&hdev->dev, widget,
1023 snd_soc_dapm_mux, port, widget_name, NULL, kc, 1,
1024 hdac_hdmi_pin_mux_widget_event,
1025 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG);
1028 /* Add cvt <- input <- mux route map */
1029 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_device *hdev,
1030 struct snd_soc_dapm_widget *widgets,
1031 struct snd_soc_dapm_route *route, int rindex)
1033 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1034 const struct snd_kcontrol_new *kc;
1035 struct soc_enum *se;
1036 int mux_index = hdmi->num_cvt + hdmi->num_ports;
1039 for (i = 0; i < hdmi->num_ports; i++) {
1040 kc = widgets[mux_index].kcontrol_news;
1041 se = (struct soc_enum *)kc->private_value;
1042 for (j = 0; j < hdmi->num_cvt; j++) {
1043 hdac_hdmi_fill_route(&route[rindex],
1044 widgets[mux_index].name,
1046 widgets[j].name, NULL);
1056 * Widgets are added in the below sequence
1057 * Converter widgets for num converters enumerated
1058 * Pin-port widgets for num ports for Pins enumerated
1059 * Pin-port mux widgets to represent connenction list of pin widget
1061 * For each port, one Mux and One output widget is added
1062 * Total widgets elements = num_cvt + (num_ports * 2);
1064 * Routes are added as below:
1065 * pin-port mux -> pin (based on num_ports)
1066 * cvt -> "Input sel control" -> pin-port_mux
1068 * Total route elements:
1069 * num_ports + (pin_muxes * num_cvt)
1071 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
1073 struct snd_soc_dapm_widget *widgets;
1074 struct snd_soc_dapm_route *route;
1075 struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
1076 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1077 struct snd_soc_dai_driver *dai_drv = hdmi->dai_drv;
1078 char widget_name[NAME_SIZE];
1079 struct hdac_hdmi_cvt *cvt;
1080 struct hdac_hdmi_pin *pin;
1081 int ret, i = 0, num_routes = 0, j;
1083 if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
1086 widgets = devm_kzalloc(dapm->dev, (sizeof(*widgets) *
1087 ((2 * hdmi->num_ports) + hdmi->num_cvt)),
1093 /* DAPM widgets to represent each converter widget */
1094 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1095 sprintf(widget_name, "Converter %d", cvt->nid);
1096 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1097 snd_soc_dapm_aif_in, cvt,
1098 widget_name, dai_drv[i].playback.stream_name, NULL, 0,
1099 hdac_hdmi_cvt_output_widget_event,
1100 SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
1106 list_for_each_entry(pin, &hdmi->pin_list, head) {
1107 for (j = 0; j < pin->num_ports; j++) {
1108 sprintf(widget_name, "hif%d-%d Output",
1109 pin->nid, pin->ports[j].id);
1110 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1111 snd_soc_dapm_output, &pin->ports[j],
1112 widget_name, NULL, NULL, 0,
1113 hdac_hdmi_pin_output_widget_event,
1114 SND_SOC_DAPM_PRE_PMU |
1115 SND_SOC_DAPM_POST_PMD);
1118 pin->ports[j].output_pin = widgets[i].name;
1123 /* DAPM widgets to represent the connection list to pin widget */
1124 list_for_each_entry(pin, &hdmi->pin_list, head) {
1125 for (j = 0; j < pin->num_ports; j++) {
1126 sprintf(widget_name, "Pin%d-Port%d Mux",
1127 pin->nid, pin->ports[j].id);
1128 ret = hdac_hdmi_create_pin_port_muxs(hdev,
1129 &pin->ports[j], &widgets[i],
1135 /* For cvt to pin_mux mapping */
1136 num_routes += hdmi->num_cvt;
1138 /* For pin_mux to pin mapping */
1143 route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
1149 /* Add pin <- NULL <- mux route map */
1150 list_for_each_entry(pin, &hdmi->pin_list, head) {
1151 for (j = 0; j < pin->num_ports; j++) {
1152 int sink_index = i + hdmi->num_cvt;
1153 int src_index = sink_index + pin->num_ports *
1156 hdac_hdmi_fill_route(&route[i],
1157 widgets[sink_index].name, NULL,
1158 widgets[src_index].name, NULL);
1163 hdac_hdmi_add_pinmux_cvt_route(hdev, widgets, route, i);
1165 snd_soc_dapm_new_controls(dapm, widgets,
1166 ((2 * hdmi->num_ports) + hdmi->num_cvt));
1168 snd_soc_dapm_add_routes(dapm, route, num_routes);
1169 snd_soc_dapm_new_widgets(dapm->card);
1175 static int hdac_hdmi_init_dai_map(struct hdac_device *hdev)
1177 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1178 struct hdac_hdmi_dai_port_map *dai_map;
1179 struct hdac_hdmi_cvt *cvt;
1182 if (list_empty(&hdmi->cvt_list))
1185 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1186 dai_map = &hdmi->dai_map[dai_id];
1187 dai_map->dai_id = dai_id;
1192 if (dai_id == HDA_MAX_CVTS) {
1193 dev_warn(&hdev->dev,
1194 "Max dais supported: %d\n", dai_id);
1202 static int hdac_hdmi_add_cvt(struct hdac_device *hdev, hda_nid_t nid)
1204 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1205 struct hdac_hdmi_cvt *cvt;
1206 char name[NAME_SIZE];
1208 cvt = devm_kzalloc(&hdev->dev, sizeof(*cvt), GFP_KERNEL);
1213 sprintf(name, "cvt %d", cvt->nid);
1214 cvt->name = devm_kstrdup(&hdev->dev, name, GFP_KERNEL);
1218 list_add_tail(&cvt->head, &hdmi->cvt_list);
1221 return hdac_hdmi_query_cvt_params(hdev, cvt);
1224 static int hdac_hdmi_parse_eld(struct hdac_device *hdev,
1225 struct hdac_hdmi_port *port)
1227 unsigned int ver, mnl;
1229 ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
1230 >> DRM_ELD_VER_SHIFT;
1232 if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
1233 dev_err(&hdev->dev, "HDMI: Unknown ELD version %d\n", ver);
1237 mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
1238 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
1240 if (mnl > ELD_MAX_MNL) {
1241 dev_err(&hdev->dev, "HDMI: MNL Invalid %d\n", mnl);
1245 port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER];
1250 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin,
1251 struct hdac_hdmi_port *port)
1253 struct hdac_device *hdev = pin->hdev;
1254 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1255 struct hdac_hdmi_pcm *pcm;
1258 bool eld_valid, eld_changed;
1264 * In case of non MST pin, get_eld info API expectes port
1267 mutex_lock(&hdmi->pin_mutex);
1268 port->eld.monitor_present = false;
1270 if (pin->mst_capable)
1273 size = snd_hdac_acomp_get_eld(hdev, pin->nid, port_id,
1274 &port->eld.monitor_present,
1275 port->eld.eld_buffer,
1279 size = min(size, ELD_MAX_SIZE);
1280 if (hdac_hdmi_parse_eld(hdev, port) < 0)
1284 eld_valid = port->eld.eld_valid;
1287 port->eld.eld_valid = true;
1288 port->eld.eld_size = size;
1290 port->eld.eld_valid = false;
1291 port->eld.eld_size = 0;
1294 eld_changed = (eld_valid != port->eld.eld_valid);
1296 pcm = hdac_hdmi_get_pcm(hdev, port);
1298 if (!port->eld.monitor_present || !port->eld.eld_valid) {
1300 dev_err(&hdev->dev, "%s: disconnect for pin:port %d:%d\n",
1301 __func__, pin->nid, port->id);
1304 * PCMs are not registered during device probe, so don't
1305 * report jack here. It will be done in usermode mux
1309 hdac_hdmi_jack_report(pcm, port, false);
1310 schedule_work(&port->dapm_work);
1313 mutex_unlock(&hdmi->pin_mutex);
1317 if (port->eld.monitor_present && port->eld.eld_valid) {
1319 hdac_hdmi_jack_report(pcm, port, true);
1320 schedule_work(&port->dapm_work);
1323 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
1324 port->eld.eld_buffer, port->eld.eld_size, false);
1327 mutex_unlock(&hdmi->pin_mutex);
1329 if (eld_changed && pcm)
1330 snd_ctl_notify(hdmi->card,
1331 SNDRV_CTL_EVENT_MASK_VALUE |
1332 SNDRV_CTL_EVENT_MASK_INFO,
1336 static int hdac_hdmi_add_ports(struct hdac_device *hdev,
1337 struct hdac_hdmi_pin *pin)
1339 struct hdac_hdmi_port *ports;
1340 int max_ports = HDA_MAX_PORTS;
1344 * FIXME: max_port may vary for each platform, so pass this as
1345 * as driver data or query from i915 interface when this API is
1349 ports = devm_kcalloc(&hdev->dev, max_ports, sizeof(*ports), GFP_KERNEL);
1353 for (i = 0; i < max_ports; i++) {
1356 INIT_WORK(&ports[i].dapm_work, hdac_hdmi_jack_dapm_work);
1359 pin->num_ports = max_ports;
1363 static int hdac_hdmi_add_pin(struct hdac_device *hdev, hda_nid_t nid)
1365 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1366 struct hdac_hdmi_pin *pin;
1369 pin = devm_kzalloc(&hdev->dev, sizeof(*pin), GFP_KERNEL);
1374 pin->mst_capable = false;
1376 ret = hdac_hdmi_add_ports(hdev, pin);
1380 list_add_tail(&pin->head, &hdmi->pin_list);
1382 hdmi->num_ports += pin->num_ports;
1387 #define INTEL_VENDOR_NID 0x08
1388 #define INTEL_GLK_VENDOR_NID 0x0b
1389 #define INTEL_GET_VENDOR_VERB 0xf81
1390 #define INTEL_SET_VENDOR_VERB 0x781
1391 #define INTEL_EN_DP12 0x02 /* enable DP 1.2 features */
1392 #define INTEL_EN_ALL_PIN_CVTS 0x01 /* enable 2nd & 3rd pins and convertors */
1394 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdev)
1396 unsigned int vendor_param;
1397 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1398 unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1400 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1401 INTEL_GET_VENDOR_VERB, 0);
1402 if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1405 vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1406 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1407 INTEL_SET_VENDOR_VERB, vendor_param);
1408 if (vendor_param == -1)
1412 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdev)
1414 unsigned int vendor_param;
1415 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1416 unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1418 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1419 INTEL_GET_VENDOR_VERB, 0);
1420 if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1423 /* enable DP1.2 mode */
1424 vendor_param |= INTEL_EN_DP12;
1425 vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1426 INTEL_SET_VENDOR_VERB, vendor_param);
1427 if (vendor_param == -1)
1432 static int hdac_hdmi_eld_ctl_info(struct snd_kcontrol *kcontrol,
1433 struct snd_ctl_elem_info *uinfo)
1435 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1436 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1437 struct hdac_hdmi_pcm *pcm;
1438 struct hdac_hdmi_port *port;
1439 struct hdac_hdmi_eld *eld;
1441 uinfo->type = SNDRV_CTL_ELEM_TYPE_BYTES;
1444 pcm = get_hdmi_pcm_from_id(hdmi, kcontrol->id.device);
1446 dev_dbg(component->dev, "%s: no pcm, device %d\n", __func__,
1447 kcontrol->id.device);
1451 if (list_empty(&pcm->port_list)) {
1452 dev_dbg(component->dev, "%s: empty port list, device %d\n",
1453 __func__, kcontrol->id.device);
1457 mutex_lock(&hdmi->pin_mutex);
1459 list_for_each_entry(port, &pcm->port_list, head) {
1462 if (eld->eld_valid) {
1463 uinfo->count = eld->eld_size;
1468 mutex_unlock(&hdmi->pin_mutex);
1473 static int hdac_hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
1474 struct snd_ctl_elem_value *ucontrol)
1476 struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
1477 struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1478 struct hdac_hdmi_pcm *pcm;
1479 struct hdac_hdmi_port *port;
1480 struct hdac_hdmi_eld *eld;
1482 memset(ucontrol->value.bytes.data, 0, sizeof(ucontrol->value.bytes.data));
1484 pcm = get_hdmi_pcm_from_id(hdmi, kcontrol->id.device);
1486 dev_dbg(component->dev, "%s: no pcm, device %d\n", __func__,
1487 kcontrol->id.device);
1491 if (list_empty(&pcm->port_list)) {
1492 dev_dbg(component->dev, "%s: empty port list, device %d\n",
1493 __func__, kcontrol->id.device);
1497 mutex_lock(&hdmi->pin_mutex);
1499 list_for_each_entry(port, &pcm->port_list, head) {
1502 if (!eld->eld_valid)
1505 if (eld->eld_size > ARRAY_SIZE(ucontrol->value.bytes.data) ||
1506 eld->eld_size > ELD_MAX_SIZE) {
1507 mutex_unlock(&hdmi->pin_mutex);
1509 dev_err(component->dev, "%s: buffer too small, device %d eld_size %d\n",
1510 __func__, kcontrol->id.device, eld->eld_size);
1515 memcpy(ucontrol->value.bytes.data, eld->eld_buffer,
1520 mutex_unlock(&hdmi->pin_mutex);
1525 static int hdac_hdmi_create_eld_ctl(struct snd_soc_component *component, struct hdac_hdmi_pcm *pcm)
1527 struct snd_kcontrol *kctl;
1528 struct snd_kcontrol_new hdmi_eld_ctl = {
1529 .access = SNDRV_CTL_ELEM_ACCESS_READ |
1530 SNDRV_CTL_ELEM_ACCESS_VOLATILE,
1531 .iface = SNDRV_CTL_ELEM_IFACE_PCM,
1533 .info = hdac_hdmi_eld_ctl_info,
1534 .get = hdac_hdmi_eld_ctl_get,
1535 .device = pcm->pcm_id,
1538 /* add ELD ctl with the device number corresponding to the PCM stream */
1539 kctl = snd_ctl_new1(&hdmi_eld_ctl, component);
1543 pcm->eld_ctl = kctl;
1545 return snd_ctl_add(component->card->snd_card, kctl);
1548 static const struct snd_soc_dai_ops hdmi_dai_ops = {
1549 .startup = hdac_hdmi_pcm_open,
1550 .shutdown = hdac_hdmi_pcm_close,
1551 .hw_params = hdac_hdmi_set_hw_params,
1552 .set_stream = hdac_hdmi_set_stream,
1556 * Each converter can support a stream independently. So a dai is created
1557 * based on the number of converter queried.
1559 static int hdac_hdmi_create_dais(struct hdac_device *hdev,
1560 struct snd_soc_dai_driver **dais,
1561 struct hdac_hdmi_priv *hdmi, int num_dais)
1563 struct snd_soc_dai_driver *hdmi_dais;
1564 struct hdac_hdmi_cvt *cvt;
1565 char name[NAME_SIZE], dai_name[NAME_SIZE];
1568 unsigned int rate_max = 384000, rate_min = 8000;
1572 hdmi_dais = devm_kzalloc(&hdev->dev,
1573 (sizeof(*hdmi_dais) * num_dais),
1578 list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1579 ret = snd_hdac_query_supported_pcm(hdev, cvt->nid,
1580 &rates, &formats, &bps);
1584 /* Filter out 44.1, 88.2 and 176.4Khz */
1585 rates &= ~(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_88200 |
1586 SNDRV_PCM_RATE_176400);
1590 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1591 hdmi_dais[i].name = devm_kstrdup(&hdev->dev,
1592 dai_name, GFP_KERNEL);
1594 if (!hdmi_dais[i].name)
1597 snprintf(name, sizeof(name), "hifi%d", i+1);
1598 hdmi_dais[i].playback.stream_name =
1599 devm_kstrdup(&hdev->dev, name, GFP_KERNEL);
1600 if (!hdmi_dais[i].playback.stream_name)
1604 * Set caps based on capability queried from the converter.
1605 * It will be constrained runtime based on ELD queried.
1607 hdmi_dais[i].playback.formats = formats;
1608 hdmi_dais[i].playback.rates = rates;
1609 hdmi_dais[i].playback.rate_max = rate_max;
1610 hdmi_dais[i].playback.rate_min = rate_min;
1611 hdmi_dais[i].playback.channels_min = 2;
1612 hdmi_dais[i].playback.channels_max = 2;
1613 hdmi_dais[i].playback.sig_bits = bps;
1614 hdmi_dais[i].ops = &hdmi_dai_ops;
1619 hdmi->dai_drv = hdmi_dais;
1625 * Parse all nodes and store the cvt/pin nids in array
1626 * Add one time initialization for pin and cvt widgets
1628 static int hdac_hdmi_parse_and_map_nid(struct hdac_device *hdev,
1629 struct snd_soc_dai_driver **dais, int *num_dais)
1633 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1636 hdac_hdmi_skl_enable_all_pins(hdev);
1637 hdac_hdmi_skl_enable_dp12(hdev);
1639 num_nodes = snd_hdac_get_sub_nodes(hdev, hdev->afg, &nid);
1640 if (!nid || num_nodes <= 0) {
1641 dev_warn(&hdev->dev, "HDMI: failed to get afg sub nodes\n");
1645 for (i = 0; i < num_nodes; i++, nid++) {
1649 caps = get_wcaps(hdev, nid);
1650 type = get_wcaps_type(caps);
1652 if (!(caps & AC_WCAP_DIGITAL))
1657 case AC_WID_AUD_OUT:
1658 ret = hdac_hdmi_add_cvt(hdev, nid);
1664 ret = hdac_hdmi_add_pin(hdev, nid);
1671 if (!hdmi->num_pin || !hdmi->num_cvt) {
1673 dev_err(&hdev->dev, "Bad pin/cvt setup in %s\n", __func__);
1677 ret = hdac_hdmi_create_dais(hdev, dais, hdmi, hdmi->num_cvt);
1679 dev_err(&hdev->dev, "Failed to create dais with err: %d\n",
1684 *num_dais = hdmi->num_cvt;
1685 ret = hdac_hdmi_init_dai_map(hdev);
1687 dev_err(&hdev->dev, "Failed to init DAI map with err: %d\n",
1692 static int hdac_hdmi_pin2port(void *aptr, int pin)
1694 return pin - 4; /* map NID 0x05 -> port #1 */
1697 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
1699 struct hdac_device *hdev = aptr;
1700 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1701 struct hdac_hdmi_pin *pin = NULL;
1702 struct hdac_hdmi_port *hport = NULL;
1703 struct snd_soc_component *component = hdmi->component;
1706 /* Don't know how this mapping is derived */
1707 hda_nid_t pin_nid = port + 0x04;
1709 dev_dbg(&hdev->dev, "%s: for pin:%d port=%d\n", __func__,
1713 * skip notification during system suspend (but not in runtime PM);
1714 * the state will be updated at resume. Also since the ELD and
1715 * connection states are updated in anyway at the end of the resume,
1716 * we can skip it when received during PM process.
1718 if (snd_power_get_state(component->card->snd_card) !=
1722 if (atomic_read(&hdev->in_pm))
1725 list_for_each_entry(pin, &hdmi->pin_list, head) {
1726 if (pin->nid != pin_nid)
1729 /* In case of non MST pin, pipe is -1 */
1731 pin->mst_capable = false;
1732 /* if not MST, default is port[0] */
1733 hport = &pin->ports[0];
1735 for (i = 0; i < pin->num_ports; i++) {
1736 pin->mst_capable = true;
1737 if (pin->ports[i].id == pipe) {
1738 hport = &pin->ports[i];
1745 hdac_hdmi_present_sense(pin, hport);
1750 static struct drm_audio_component_audio_ops aops = {
1751 .pin2port = hdac_hdmi_pin2port,
1752 .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1755 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1758 struct snd_soc_pcm_runtime *rtd;
1760 for_each_card_rtds(card, rtd) {
1761 if (rtd->pcm && (rtd->pcm->device == device))
1768 /* create jack pin kcontrols */
1769 static int create_fill_jack_kcontrols(struct snd_soc_card *card,
1770 struct hdac_device *hdev)
1772 struct hdac_hdmi_pin *pin;
1773 struct snd_kcontrol_new *kc;
1774 char kc_name[NAME_SIZE], xname[NAME_SIZE];
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 snprintf(xname, sizeof(xname), "hif%d-%d Jack",
1789 pin->nid, pin->ports[j].id);
1790 name = devm_kstrdup(component->dev, xname, GFP_KERNEL);
1793 snprintf(kc_name, sizeof(kc_name), "%s Switch", xname);
1794 kc[i].name = devm_kstrdup(component->dev, kc_name,
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 = NULL;
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_link(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,
2066 .non_legacy_dai_naming = 1,
2069 static void hdac_hdmi_get_chmap(struct hdac_device *hdev, int pcm_idx,
2070 unsigned char *chmap)
2072 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2073 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2075 memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap));
2078 static void hdac_hdmi_set_chmap(struct hdac_device *hdev, int pcm_idx,
2079 unsigned char *chmap, int prepared)
2081 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2082 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2083 struct hdac_hdmi_port *port;
2088 if (list_empty(&pcm->port_list))
2091 mutex_lock(&pcm->lock);
2092 pcm->chmap_set = true;
2093 memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap));
2094 list_for_each_entry(port, &pcm->port_list, head)
2096 hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
2097 mutex_unlock(&pcm->lock);
2100 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdev, int pcm_idx)
2102 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2103 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2108 if (list_empty(&pcm->port_list))
2114 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdev, int pcm_idx)
2116 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2117 struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
2118 struct hdac_hdmi_port *port;
2123 if (list_empty(&pcm->port_list))
2126 port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head);
2128 if (!port || !port->eld.eld_valid)
2131 return port->eld.info.spk_alloc;
2134 static struct hdac_hdmi_drv_data intel_glk_drv_data = {
2135 .vendor_nid = INTEL_GLK_VENDOR_NID,
2138 static struct hdac_hdmi_drv_data intel_drv_data = {
2139 .vendor_nid = INTEL_VENDOR_NID,
2142 static int hdac_hdmi_dev_probe(struct hdac_device *hdev)
2144 struct hdac_hdmi_priv *hdmi_priv;
2145 struct snd_soc_dai_driver *hdmi_dais = NULL;
2146 struct hdac_ext_link *hlink;
2149 struct hdac_driver *hdrv = drv_to_hdac_driver(hdev->dev.driver);
2150 const struct hda_device_id *hdac_id = hdac_get_device_id(hdev, hdrv);
2152 /* hold the ref while we probe */
2153 hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
2155 dev_err(&hdev->dev, "hdac link not found\n");
2159 snd_hdac_ext_bus_link_get(hdev->bus, hlink);
2161 hdmi_priv = devm_kzalloc(&hdev->dev, sizeof(*hdmi_priv), GFP_KERNEL);
2162 if (hdmi_priv == NULL)
2165 snd_hdac_register_chmap_ops(hdev, &hdmi_priv->chmap);
2166 hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
2167 hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
2168 hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
2169 hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
2170 hdmi_priv->hdev = hdev;
2175 if (hdac_id->driver_data)
2176 hdmi_priv->drv_data =
2177 (struct hdac_hdmi_drv_data *)hdac_id->driver_data;
2179 hdmi_priv->drv_data = &intel_drv_data;
2181 dev_set_drvdata(&hdev->dev, hdmi_priv);
2183 INIT_LIST_HEAD(&hdmi_priv->pin_list);
2184 INIT_LIST_HEAD(&hdmi_priv->cvt_list);
2185 INIT_LIST_HEAD(&hdmi_priv->pcm_list);
2186 mutex_init(&hdmi_priv->pin_mutex);
2189 * Turned off in the runtime_suspend during the first explicit
2190 * pm_runtime_suspend call.
2192 snd_hdac_display_power(hdev->bus, hdev->addr, true);
2194 ret = hdac_hdmi_parse_and_map_nid(hdev, &hdmi_dais, &num_dais);
2197 "Failed in parse and map nid with err: %d\n", ret);
2200 snd_hdac_refresh_widgets(hdev);
2202 /* ASoC specific initialization */
2203 ret = devm_snd_soc_register_component(&hdev->dev, &hdmi_hda_codec,
2204 hdmi_dais, num_dais);
2206 snd_hdac_ext_bus_link_put(hdev->bus, hlink);
2211 static void clear_dapm_works(struct hdac_device *hdev)
2213 struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
2214 struct hdac_hdmi_pin *pin;
2217 list_for_each_entry(pin, &hdmi->pin_list, head)
2218 for (i = 0; i < pin->num_ports; i++)
2219 cancel_work_sync(&pin->ports[i].dapm_work);
2222 static int hdac_hdmi_dev_remove(struct hdac_device *hdev)
2224 clear_dapm_works(hdev);
2225 snd_hdac_display_power(hdev->bus, hdev->addr, false);
2231 static int hdac_hdmi_runtime_suspend(struct device *dev)
2233 struct hdac_device *hdev = dev_to_hdac_dev(dev);
2234 struct hdac_bus *bus = hdev->bus;
2235 struct hdac_ext_link *hlink = NULL;
2237 dev_dbg(dev, "Enter: %s\n", __func__);
2239 /* controller may not have been initialized for the first time */
2245 * codec_read is preferred over codec_write to set the power state.
2246 * This way verb is send to set the power state and response
2247 * is received. So setting power state is ensured without using loop
2248 * to read the state.
2250 snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2253 hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
2255 dev_err(dev, "hdac link not found\n");
2259 snd_hdac_codec_link_down(hdev);
2260 snd_hdac_ext_bus_link_put(bus, hlink);
2262 snd_hdac_display_power(bus, hdev->addr, false);
2267 static int hdac_hdmi_runtime_resume(struct device *dev)
2269 struct hdac_device *hdev = dev_to_hdac_dev(dev);
2270 struct hdac_bus *bus = hdev->bus;
2271 struct hdac_ext_link *hlink = NULL;
2273 dev_dbg(dev, "Enter: %s\n", __func__);
2275 /* controller may not have been initialized for the first time */
2279 hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
2281 dev_err(dev, "hdac link not found\n");
2285 snd_hdac_ext_bus_link_get(bus, hlink);
2286 snd_hdac_codec_link_up(hdev);
2288 snd_hdac_display_power(bus, hdev->addr, true);
2290 hdac_hdmi_skl_enable_all_pins(hdev);
2291 hdac_hdmi_skl_enable_dp12(hdev);
2294 snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2300 #define hdac_hdmi_runtime_suspend NULL
2301 #define hdac_hdmi_runtime_resume NULL
2304 static const struct dev_pm_ops hdac_hdmi_pm = {
2305 SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
2306 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, hdmi_codec_resume)
2309 static const struct hda_device_id hdmi_list[] = {
2310 HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
2311 HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
2312 HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
2313 HDA_CODEC_EXT_ENTRY(0x8086280c, 0x100000, "Cannonlake HDMI",
2314 &intel_glk_drv_data),
2315 HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI",
2316 &intel_glk_drv_data),
2320 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
2322 static struct hdac_driver hdmi_driver = {
2324 .name = "HDMI HDA Codec",
2325 .pm = &hdac_hdmi_pm,
2327 .id_table = hdmi_list,
2328 .probe = hdac_hdmi_dev_probe,
2329 .remove = hdac_hdmi_dev_remove,
2332 static int __init hdmi_init(void)
2334 return snd_hda_ext_driver_register(&hdmi_driver);
2337 static void __exit hdmi_exit(void)
2339 snd_hda_ext_driver_unregister(&hdmi_driver);
2342 module_init(hdmi_init);
2343 module_exit(hdmi_exit);
2345 MODULE_LICENSE("GPL v2");
2346 MODULE_DESCRIPTION("HDMI HD codec");
2347 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
2348 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");