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Linux/sound/soc/codecs/hdac_hdmi.c

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  1 // SPDX-License-Identifier: GPL-2.0-only
  2 /*
  3  *  hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms
  4  *
  5  *  Copyright (C) 2014-2015 Intel Corp
  6  *  Author: Samreen Nilofer <samreen.nilofer@intel.com>
  7  *          Subhransu S. Prusty <subhransu.s.prusty@intel.com>
  8  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  9  *
 10  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 11  */
 12 #include <linux/init.h>
 13 #include <linux/delay.h>
 14 #include <linux/module.h>
 15 #include <linux/pm_runtime.h>
 16 #include <linux/hdmi.h>
 17 #include <drm/drm_edid.h>
 18 #include <sound/pcm_params.h>
 19 #include <sound/jack.h>
 20 #include <sound/soc.h>
 21 #include <sound/hdaudio_ext.h>
 22 #include <sound/hda_i915.h>
 23 #include <sound/pcm_drm_eld.h>
 24 #include <sound/hda_chmap.h>
 25 #include "../../hda/local.h"
 26 #include "hdac_hdmi.h"
 27 
 28 #define NAME_SIZE       32
 29 
 30 #define AMP_OUT_MUTE            0xb080
 31 #define AMP_OUT_UNMUTE          0xb000
 32 #define PIN_OUT                 (AC_PINCTL_OUT_EN)
 33 
 34 #define HDA_MAX_CONNECTIONS     32
 35 
 36 #define HDA_MAX_CVTS            3
 37 #define HDA_MAX_PORTS           3
 38 
 39 #define ELD_MAX_SIZE    256
 40 #define ELD_FIXED_BYTES 20
 41 
 42 #define ELD_VER_CEA_861D 2
 43 #define ELD_VER_PARTIAL 31
 44 #define ELD_MAX_MNL     16
 45 
 46 struct hdac_hdmi_cvt_params {
 47         unsigned int channels_min;
 48         unsigned int channels_max;
 49         u32 rates;
 50         u64 formats;
 51         unsigned int maxbps;
 52 };
 53 
 54 struct hdac_hdmi_cvt {
 55         struct list_head head;
 56         hda_nid_t nid;
 57         const char *name;
 58         struct hdac_hdmi_cvt_params params;
 59 };
 60 
 61 /* Currently only spk_alloc, more to be added */
 62 struct hdac_hdmi_parsed_eld {
 63         u8 spk_alloc;
 64 };
 65 
 66 struct hdac_hdmi_eld {
 67         bool    monitor_present;
 68         bool    eld_valid;
 69         int     eld_size;
 70         char    eld_buffer[ELD_MAX_SIZE];
 71         struct  hdac_hdmi_parsed_eld info;
 72 };
 73 
 74 struct hdac_hdmi_pin {
 75         struct list_head head;
 76         hda_nid_t nid;
 77         bool mst_capable;
 78         struct hdac_hdmi_port *ports;
 79         int num_ports;
 80         struct hdac_device *hdev;
 81 };
 82 
 83 struct hdac_hdmi_port {
 84         struct list_head head;
 85         int id;
 86         struct hdac_hdmi_pin *pin;
 87         int num_mux_nids;
 88         hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
 89         struct hdac_hdmi_eld eld;
 90         const char *jack_pin;
 91         struct snd_soc_dapm_context *dapm;
 92         const char *output_pin;
 93 };
 94 
 95 struct hdac_hdmi_pcm {
 96         struct list_head head;
 97         int pcm_id;
 98         struct list_head port_list;
 99         struct hdac_hdmi_cvt *cvt;
100         struct snd_soc_jack *jack;
101         int stream_tag;
102         int channels;
103         int format;
104         bool chmap_set;
105         unsigned char chmap[8]; /* ALSA API channel-map */
106         struct mutex lock;
107         int jack_event;
108 };
109 
110 struct hdac_hdmi_dai_port_map {
111         int dai_id;
112         struct hdac_hdmi_port *port;
113         struct hdac_hdmi_cvt *cvt;
114 };
115 
116 /*
117  * pin to port mapping table where the value indicate the pin number and
118  * the index indicate the port number with 1 base.
119  */
120 static const int icl_pin2port_map[] = {0x4, 0x6, 0x8, 0xa, 0xb};
121 
122 struct hdac_hdmi_drv_data {
123         unsigned int vendor_nid;
124         const int *port_map; /* pin to port mapping table */
125         int port_num;
126 };
127 
128 struct hdac_hdmi_priv {
129         struct hdac_device *hdev;
130         struct snd_soc_component *component;
131         struct snd_card *card;
132         struct hdac_hdmi_dai_port_map dai_map[HDA_MAX_CVTS];
133         struct list_head pin_list;
134         struct list_head cvt_list;
135         struct list_head pcm_list;
136         int num_pin;
137         int num_cvt;
138         int num_ports;
139         struct mutex pin_mutex;
140         struct hdac_chmap chmap;
141         struct hdac_hdmi_drv_data *drv_data;
142         struct snd_soc_dai_driver *dai_drv;
143 };
144 
145 #define hdev_to_hdmi_priv(_hdev) dev_get_drvdata(&(_hdev)->dev)
146 
147 static struct hdac_hdmi_pcm *
148 hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi,
149                            struct hdac_hdmi_cvt *cvt)
150 {
151         struct hdac_hdmi_pcm *pcm = NULL;
152 
153         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
154                 if (pcm->cvt == cvt)
155                         break;
156         }
157 
158         return pcm;
159 }
160 
161 static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm,
162                 struct hdac_hdmi_port *port, bool is_connect)
163 {
164         struct hdac_device *hdev = port->pin->hdev;
165 
166         if (is_connect)
167                 snd_soc_dapm_enable_pin(port->dapm, port->jack_pin);
168         else
169                 snd_soc_dapm_disable_pin(port->dapm, port->jack_pin);
170 
171         if (is_connect) {
172                 /*
173                  * Report Jack connect event when a device is connected
174                  * for the first time where same PCM is attached to multiple
175                  * ports.
176                  */
177                 if (pcm->jack_event == 0) {
178                         dev_dbg(&hdev->dev,
179                                         "jack report for pcm=%d\n",
180                                         pcm->pcm_id);
181                         snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT,
182                                                 SND_JACK_AVOUT);
183                 }
184                 pcm->jack_event++;
185         } else {
186                 /*
187                  * Report Jack disconnect event when a device is disconnected
188                  * is the only last connected device when same PCM is attached
189                  * to multiple ports.
190                  */
191                 if (pcm->jack_event == 1)
192                         snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT);
193                 if (pcm->jack_event > 0)
194                         pcm->jack_event--;
195         }
196 
197         snd_soc_dapm_sync(port->dapm);
198 }
199 
200 /* MST supported verbs */
201 /*
202  * Get the no devices that can be connected to a port on the Pin widget.
203  */
204 static int hdac_hdmi_get_port_len(struct hdac_device *hdev, hda_nid_t nid)
205 {
206         unsigned int caps;
207         unsigned int type, param;
208 
209         caps = get_wcaps(hdev, nid);
210         type = get_wcaps_type(caps);
211 
212         if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN))
213                 return 0;
214 
215         param = snd_hdac_read_parm_uncached(hdev, nid, AC_PAR_DEVLIST_LEN);
216         if (param == -1)
217                 return param;
218 
219         return param & AC_DEV_LIST_LEN_MASK;
220 }
221 
222 /*
223  * Get the port entry select on the pin. Return the port entry
224  * id selected on the pin. Return 0 means the first port entry
225  * is selected or MST is not supported.
226  */
227 static int hdac_hdmi_port_select_get(struct hdac_device *hdev,
228                                         struct hdac_hdmi_port *port)
229 {
230         return snd_hdac_codec_read(hdev, port->pin->nid,
231                                 0, AC_VERB_GET_DEVICE_SEL, 0);
232 }
233 
234 /*
235  * Sets the selected port entry for the configuring Pin widget verb.
236  * returns error if port set is not equal to port get otherwise success
237  */
238 static int hdac_hdmi_port_select_set(struct hdac_device *hdev,
239                                         struct hdac_hdmi_port *port)
240 {
241         int num_ports;
242 
243         if (!port->pin->mst_capable)
244                 return 0;
245 
246         /* AC_PAR_DEVLIST_LEN is 0 based. */
247         num_ports = hdac_hdmi_get_port_len(hdev, port->pin->nid);
248         if (num_ports < 0)
249                 return -EIO;
250         /*
251          * Device List Length is a 0 based integer value indicating the
252          * number of sink device that a MST Pin Widget can support.
253          */
254         if (num_ports + 1  < port->id)
255                 return 0;
256 
257         snd_hdac_codec_write(hdev, port->pin->nid, 0,
258                         AC_VERB_SET_DEVICE_SEL, port->id);
259 
260         if (port->id != hdac_hdmi_port_select_get(hdev, port))
261                 return -EIO;
262 
263         dev_dbg(&hdev->dev, "Selected the port=%d\n", port->id);
264 
265         return 0;
266 }
267 
268 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
269                                                 int pcm_idx)
270 {
271         struct hdac_hdmi_pcm *pcm;
272 
273         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
274                 if (pcm->pcm_id == pcm_idx)
275                         return pcm;
276         }
277 
278         return NULL;
279 }
280 
281 static unsigned int sad_format(const u8 *sad)
282 {
283         return ((sad[0] >> 0x3) & 0x1f);
284 }
285 
286 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
287 {
288         return (sad[2] & 7);
289 }
290 
291 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
292                                                 void *eld)
293 {
294         u64 formats = SNDRV_PCM_FMTBIT_S16;
295         int i;
296         const u8 *sad, *eld_buf = eld;
297 
298         sad = drm_eld_sad(eld_buf);
299         if (!sad)
300                 goto format_constraint;
301 
302         for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
303                 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
304 
305                         /*
306                          * the controller support 20 and 24 bits in 32 bit
307                          * container so we set S32
308                          */
309                         if (sad_sample_bits_lpcm(sad) & 0x6)
310                                 formats |= SNDRV_PCM_FMTBIT_S32;
311                 }
312         }
313 
314 format_constraint:
315         return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
316                                 formats);
317 
318 }
319 
320 static void
321 hdac_hdmi_set_dip_index(struct hdac_device *hdev, hda_nid_t pin_nid,
322                                 int packet_index, int byte_index)
323 {
324         int val;
325 
326         val = (packet_index << 5) | (byte_index & 0x1f);
327         snd_hdac_codec_write(hdev, pin_nid, 0, AC_VERB_SET_HDMI_DIP_INDEX, val);
328 }
329 
330 struct dp_audio_infoframe {
331         u8 type; /* 0x84 */
332         u8 len;  /* 0x1b */
333         u8 ver;  /* 0x11 << 2 */
334 
335         u8 CC02_CT47;   /* match with HDMI infoframe from this on */
336         u8 SS01_SF24;
337         u8 CXT04;
338         u8 CA;
339         u8 LFEPBL01_LSV36_DM_INH7;
340 };
341 
342 static int hdac_hdmi_setup_audio_infoframe(struct hdac_device *hdev,
343                    struct hdac_hdmi_pcm *pcm, struct hdac_hdmi_port *port)
344 {
345         uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
346         struct hdmi_audio_infoframe frame;
347         struct hdac_hdmi_pin *pin = port->pin;
348         struct dp_audio_infoframe dp_ai;
349         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
350         struct hdac_hdmi_cvt *cvt = pcm->cvt;
351         u8 *dip;
352         int ret;
353         int i;
354         const u8 *eld_buf;
355         u8 conn_type;
356         int channels, ca;
357 
358         ca = snd_hdac_channel_allocation(hdev, port->eld.info.spk_alloc,
359                         pcm->channels, pcm->chmap_set, true, pcm->chmap);
360 
361         channels = snd_hdac_get_active_channels(ca);
362         hdmi->chmap.ops.set_channel_count(hdev, cvt->nid, channels);
363 
364         snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
365                                 pcm->channels, pcm->chmap, pcm->chmap_set);
366 
367         eld_buf = port->eld.eld_buffer;
368         conn_type = drm_eld_get_conn_type(eld_buf);
369 
370         switch (conn_type) {
371         case DRM_ELD_CONN_TYPE_HDMI:
372                 hdmi_audio_infoframe_init(&frame);
373 
374                 frame.channels = channels;
375                 frame.channel_allocation = ca;
376 
377                 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
378                 if (ret < 0)
379                         return ret;
380 
381                 break;
382 
383         case DRM_ELD_CONN_TYPE_DP:
384                 memset(&dp_ai, 0, sizeof(dp_ai));
385                 dp_ai.type      = 0x84;
386                 dp_ai.len       = 0x1b;
387                 dp_ai.ver       = 0x11 << 2;
388                 dp_ai.CC02_CT47 = channels - 1;
389                 dp_ai.CA        = ca;
390 
391                 dip = (u8 *)&dp_ai;
392                 break;
393 
394         default:
395                 dev_err(&hdev->dev, "Invalid connection type: %d\n", conn_type);
396                 return -EIO;
397         }
398 
399         /* stop infoframe transmission */
400         hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
401         snd_hdac_codec_write(hdev, pin->nid, 0,
402                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
403 
404 
405         /*  Fill infoframe. Index auto-incremented */
406         hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
407         if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
408                 for (i = 0; i < sizeof(buffer); i++)
409                         snd_hdac_codec_write(hdev, pin->nid, 0,
410                                 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
411         } else {
412                 for (i = 0; i < sizeof(dp_ai); i++)
413                         snd_hdac_codec_write(hdev, pin->nid, 0,
414                                 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
415         }
416 
417         /* Start infoframe */
418         hdac_hdmi_set_dip_index(hdev, pin->nid, 0x0, 0x0);
419         snd_hdac_codec_write(hdev, pin->nid, 0,
420                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
421 
422         return 0;
423 }
424 
425 static int hdac_hdmi_set_tdm_slot(struct snd_soc_dai *dai,
426                 unsigned int tx_mask, unsigned int rx_mask,
427                 int slots, int slot_width)
428 {
429         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
430         struct hdac_device *hdev = hdmi->hdev;
431         struct hdac_hdmi_dai_port_map *dai_map;
432         struct hdac_hdmi_pcm *pcm;
433 
434         dev_dbg(&hdev->dev, "%s: strm_tag: %d\n", __func__, tx_mask);
435 
436         dai_map = &hdmi->dai_map[dai->id];
437 
438         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
439 
440         if (pcm)
441                 pcm->stream_tag = (tx_mask << 4);
442 
443         return 0;
444 }
445 
446 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
447         struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
448 {
449         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
450         struct hdac_hdmi_dai_port_map *dai_map;
451         struct hdac_hdmi_pcm *pcm;
452         int format;
453 
454         dai_map = &hdmi->dai_map[dai->id];
455 
456         format = snd_hdac_calc_stream_format(params_rate(hparams),
457                         params_channels(hparams), params_format(hparams),
458                         dai->driver->playback.sig_bits, 0);
459 
460         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
461         if (!pcm)
462                 return -EIO;
463 
464         pcm->format = format;
465         pcm->channels = params_channels(hparams);
466 
467         return 0;
468 }
469 
470 static int hdac_hdmi_query_port_connlist(struct hdac_device *hdev,
471                                         struct hdac_hdmi_pin *pin,
472                                         struct hdac_hdmi_port *port)
473 {
474         if (!(get_wcaps(hdev, pin->nid) & AC_WCAP_CONN_LIST)) {
475                 dev_warn(&hdev->dev,
476                         "HDMI: pin %d wcaps %#x does not support connection list\n",
477                         pin->nid, get_wcaps(hdev, pin->nid));
478                 return -EINVAL;
479         }
480 
481         if (hdac_hdmi_port_select_set(hdev, port) < 0)
482                 return -EIO;
483 
484         port->num_mux_nids = snd_hdac_get_connections(hdev, pin->nid,
485                         port->mux_nids, HDA_MAX_CONNECTIONS);
486         if (port->num_mux_nids == 0)
487                 dev_warn(&hdev->dev,
488                         "No connections found for pin:port %d:%d\n",
489                                                 pin->nid, port->id);
490 
491         dev_dbg(&hdev->dev, "num_mux_nids %d for pin:port %d:%d\n",
492                         port->num_mux_nids, pin->nid, port->id);
493 
494         return port->num_mux_nids;
495 }
496 
497 /*
498  * Query pcm list and return port to which stream is routed.
499  *
500  * Also query connection list of the pin, to validate the cvt to port map.
501  *
502  * Same stream rendering to multiple ports simultaneously can be done
503  * possibly, but not supported for now in driver. So return the first port
504  * connected.
505  */
506 static struct hdac_hdmi_port *hdac_hdmi_get_port_from_cvt(
507                         struct hdac_device *hdev,
508                         struct hdac_hdmi_priv *hdmi,
509                         struct hdac_hdmi_cvt *cvt)
510 {
511         struct hdac_hdmi_pcm *pcm;
512         struct hdac_hdmi_port *port = NULL;
513         int ret, i;
514 
515         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
516                 if (pcm->cvt == cvt) {
517                         if (list_empty(&pcm->port_list))
518                                 continue;
519 
520                         list_for_each_entry(port, &pcm->port_list, head) {
521                                 mutex_lock(&pcm->lock);
522                                 ret = hdac_hdmi_query_port_connlist(hdev,
523                                                         port->pin, port);
524                                 mutex_unlock(&pcm->lock);
525                                 if (ret < 0)
526                                         continue;
527 
528                                 for (i = 0; i < port->num_mux_nids; i++) {
529                                         if (port->mux_nids[i] == cvt->nid &&
530                                                 port->eld.monitor_present &&
531                                                 port->eld.eld_valid)
532                                                 return port;
533                                 }
534                         }
535                 }
536         }
537 
538         return NULL;
539 }
540 
541 /*
542  * Go through all converters and ensure connection is set to
543  * the correct pin as set via kcontrols.
544  */
545 static void hdac_hdmi_verify_connect_sel_all_pins(struct hdac_device *hdev)
546 {
547         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
548         struct hdac_hdmi_port *port;
549         struct hdac_hdmi_cvt *cvt;
550         int cvt_idx = 0;
551 
552         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
553                 port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt);
554                 if (port && port->pin) {
555                         snd_hdac_codec_write(hdev, port->pin->nid, 0,
556                                              AC_VERB_SET_CONNECT_SEL, cvt_idx);
557                         dev_dbg(&hdev->dev, "%s: %s set connect %d -> %d\n",
558                                 __func__, cvt->name, port->pin->nid, cvt_idx);
559                 }
560                 ++cvt_idx;
561         }
562 }
563 
564 /*
565  * This tries to get a valid pin and set the HW constraints based on the
566  * ELD. Even if a valid pin is not found return success so that device open
567  * doesn't fail.
568  */
569 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
570                         struct snd_soc_dai *dai)
571 {
572         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
573         struct hdac_device *hdev = hdmi->hdev;
574         struct hdac_hdmi_dai_port_map *dai_map;
575         struct hdac_hdmi_cvt *cvt;
576         struct hdac_hdmi_port *port;
577         int ret;
578 
579         dai_map = &hdmi->dai_map[dai->id];
580 
581         cvt = dai_map->cvt;
582         port = hdac_hdmi_get_port_from_cvt(hdev, hdmi, cvt);
583 
584         /*
585          * To make PA and other userland happy.
586          * userland scans devices so returning error does not help.
587          */
588         if (!port)
589                 return 0;
590         if ((!port->eld.monitor_present) ||
591                         (!port->eld.eld_valid)) {
592 
593                 dev_warn(&hdev->dev,
594                         "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n",
595                         port->eld.monitor_present, port->eld.eld_valid,
596                         port->pin->nid, port->id);
597 
598                 return 0;
599         }
600 
601         dai_map->port = port;
602 
603         ret = hdac_hdmi_eld_limit_formats(substream->runtime,
604                                 port->eld.eld_buffer);
605         if (ret < 0)
606                 return ret;
607 
608         return snd_pcm_hw_constraint_eld(substream->runtime,
609                                 port->eld.eld_buffer);
610 }
611 
612 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
613                 struct snd_soc_dai *dai)
614 {
615         struct hdac_hdmi_priv *hdmi = snd_soc_dai_get_drvdata(dai);
616         struct hdac_hdmi_dai_port_map *dai_map;
617         struct hdac_hdmi_pcm *pcm;
618 
619         dai_map = &hdmi->dai_map[dai->id];
620 
621         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
622 
623         if (pcm) {
624                 mutex_lock(&pcm->lock);
625                 pcm->chmap_set = false;
626                 memset(pcm->chmap, 0, sizeof(pcm->chmap));
627                 pcm->channels = 0;
628                 mutex_unlock(&pcm->lock);
629         }
630 
631         if (dai_map->port)
632                 dai_map->port = NULL;
633 }
634 
635 static int
636 hdac_hdmi_query_cvt_params(struct hdac_device *hdev, struct hdac_hdmi_cvt *cvt)
637 {
638         unsigned int chans;
639         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
640         int err;
641 
642         chans = get_wcaps(hdev, cvt->nid);
643         chans = get_wcaps_channels(chans);
644 
645         cvt->params.channels_min = 2;
646 
647         cvt->params.channels_max = chans;
648         if (chans > hdmi->chmap.channels_max)
649                 hdmi->chmap.channels_max = chans;
650 
651         err = snd_hdac_query_supported_pcm(hdev, cvt->nid,
652                         &cvt->params.rates,
653                         &cvt->params.formats,
654                         &cvt->params.maxbps);
655         if (err < 0)
656                 dev_err(&hdev->dev,
657                         "Failed to query pcm params for nid %d: %d\n",
658                         cvt->nid, err);
659 
660         return err;
661 }
662 
663 static int hdac_hdmi_fill_widget_info(struct device *dev,
664                 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id,
665                 void *priv, const char *wname, const char *stream,
666                 struct snd_kcontrol_new *wc, int numkc,
667                 int (*event)(struct snd_soc_dapm_widget *,
668                 struct snd_kcontrol *, int), unsigned short event_flags)
669 {
670         w->id = id;
671         w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
672         if (!w->name)
673                 return -ENOMEM;
674 
675         w->sname = stream;
676         w->reg = SND_SOC_NOPM;
677         w->shift = 0;
678         w->kcontrol_news = wc;
679         w->num_kcontrols = numkc;
680         w->priv = priv;
681         w->event = event;
682         w->event_flags = event_flags;
683 
684         return 0;
685 }
686 
687 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
688                 const char *sink, const char *control, const char *src,
689                 int (*handler)(struct snd_soc_dapm_widget *src,
690                         struct snd_soc_dapm_widget *sink))
691 {
692         route->sink = sink;
693         route->source = src;
694         route->control = control;
695         route->connected = handler;
696 }
697 
698 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_device *hdev,
699                                         struct hdac_hdmi_port *port)
700 {
701         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
702         struct hdac_hdmi_pcm *pcm = NULL;
703         struct hdac_hdmi_port *p;
704 
705         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
706                 if (list_empty(&pcm->port_list))
707                         continue;
708 
709                 list_for_each_entry(p, &pcm->port_list, head) {
710                         if (p->id == port->id && port->pin == p->pin)
711                                 return pcm;
712                 }
713         }
714 
715         return NULL;
716 }
717 
718 static void hdac_hdmi_set_power_state(struct hdac_device *hdev,
719                              hda_nid_t nid, unsigned int pwr_state)
720 {
721         int count;
722         unsigned int state;
723 
724         if (get_wcaps(hdev, nid) & AC_WCAP_POWER) {
725                 if (!snd_hdac_check_power_state(hdev, nid, pwr_state)) {
726                         for (count = 0; count < 10; count++) {
727                                 snd_hdac_codec_read(hdev, nid, 0,
728                                                 AC_VERB_SET_POWER_STATE,
729                                                 pwr_state);
730                                 state = snd_hdac_sync_power_state(hdev,
731                                                 nid, pwr_state);
732                                 if (!(state & AC_PWRST_ERROR))
733                                         break;
734                         }
735                 }
736         }
737 }
738 
739 static void hdac_hdmi_set_amp(struct hdac_device *hdev,
740                                    hda_nid_t nid, int val)
741 {
742         if (get_wcaps(hdev, nid) & AC_WCAP_OUT_AMP)
743                 snd_hdac_codec_write(hdev, nid, 0,
744                                         AC_VERB_SET_AMP_GAIN_MUTE, val);
745 }
746 
747 
748 static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w,
749                                         struct snd_kcontrol *kc, int event)
750 {
751         struct hdac_hdmi_port *port = w->priv;
752         struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
753         struct hdac_hdmi_pcm *pcm;
754 
755         dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
756                         __func__, w->name, event);
757 
758         pcm = hdac_hdmi_get_pcm(hdev, port);
759         if (!pcm)
760                 return -EIO;
761 
762         /* set the device if pin is mst_capable */
763         if (hdac_hdmi_port_select_set(hdev, port) < 0)
764                 return -EIO;
765 
766         switch (event) {
767         case SND_SOC_DAPM_PRE_PMU:
768                 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D0);
769 
770                 /* Enable out path for this pin widget */
771                 snd_hdac_codec_write(hdev, port->pin->nid, 0,
772                                 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
773 
774                 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_UNMUTE);
775 
776                 return hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
777 
778         case SND_SOC_DAPM_POST_PMD:
779                 hdac_hdmi_set_amp(hdev, port->pin->nid, AMP_OUT_MUTE);
780 
781                 /* Disable out path for this pin widget */
782                 snd_hdac_codec_write(hdev, port->pin->nid, 0,
783                                 AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
784 
785                 hdac_hdmi_set_power_state(hdev, port->pin->nid, AC_PWRST_D3);
786                 break;
787 
788         }
789 
790         return 0;
791 }
792 
793 static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w,
794                                         struct snd_kcontrol *kc, int event)
795 {
796         struct hdac_hdmi_cvt *cvt = w->priv;
797         struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
798         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
799         struct hdac_hdmi_pcm *pcm;
800 
801         dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
802                         __func__, w->name, event);
803 
804         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt);
805         if (!pcm)
806                 return -EIO;
807 
808         switch (event) {
809         case SND_SOC_DAPM_PRE_PMU:
810                 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D0);
811 
812                 /* Enable transmission */
813                 snd_hdac_codec_write(hdev, cvt->nid, 0,
814                         AC_VERB_SET_DIGI_CONVERT_1, 1);
815 
816                 /* Category Code (CC) to zero */
817                 snd_hdac_codec_write(hdev, cvt->nid, 0,
818                         AC_VERB_SET_DIGI_CONVERT_2, 0);
819 
820                 snd_hdac_codec_write(hdev, cvt->nid, 0,
821                                 AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag);
822                 snd_hdac_codec_write(hdev, cvt->nid, 0,
823                                 AC_VERB_SET_STREAM_FORMAT, pcm->format);
824 
825                 /*
826                  * The connection indices are shared by all converters and
827                  * may interfere with each other. Ensure correct
828                  * routing for all converters at stream start.
829                  */
830                 hdac_hdmi_verify_connect_sel_all_pins(hdev);
831 
832                 break;
833 
834         case SND_SOC_DAPM_POST_PMD:
835                 snd_hdac_codec_write(hdev, cvt->nid, 0,
836                                 AC_VERB_SET_CHANNEL_STREAMID, 0);
837                 snd_hdac_codec_write(hdev, cvt->nid, 0,
838                                 AC_VERB_SET_STREAM_FORMAT, 0);
839 
840                 hdac_hdmi_set_power_state(hdev, cvt->nid, AC_PWRST_D3);
841                 break;
842 
843         }
844 
845         return 0;
846 }
847 
848 static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w,
849                                         struct snd_kcontrol *kc, int event)
850 {
851         struct hdac_hdmi_port *port = w->priv;
852         struct hdac_device *hdev = dev_to_hdac_dev(w->dapm->dev);
853         int mux_idx;
854 
855         dev_dbg(&hdev->dev, "%s: widget: %s event: %x\n",
856                         __func__, w->name, event);
857 
858         if (!kc)
859                 kc  = w->kcontrols[0];
860 
861         mux_idx = dapm_kcontrol_get_value(kc);
862 
863         /* set the device if pin is mst_capable */
864         if (hdac_hdmi_port_select_set(hdev, port) < 0)
865                 return -EIO;
866 
867         if (mux_idx > 0) {
868                 snd_hdac_codec_write(hdev, port->pin->nid, 0,
869                         AC_VERB_SET_CONNECT_SEL, (mux_idx - 1));
870         }
871 
872         return 0;
873 }
874 
875 /*
876  * Based on user selection, map the PINs with the PCMs.
877  */
878 static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol,
879                 struct snd_ctl_elem_value *ucontrol)
880 {
881         int ret;
882         struct hdac_hdmi_port *p, *p_next;
883         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
884         struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
885         struct snd_soc_dapm_context *dapm = w->dapm;
886         struct hdac_hdmi_port *port = w->priv;
887         struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
888         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
889         struct hdac_hdmi_pcm *pcm = NULL;
890         const char *cvt_name =  e->texts[ucontrol->value.enumerated.item[0]];
891 
892         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
893         if (ret < 0)
894                 return ret;
895 
896         if (port == NULL)
897                 return -EINVAL;
898 
899         mutex_lock(&hdmi->pin_mutex);
900         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
901                 if (list_empty(&pcm->port_list))
902                         continue;
903 
904                 list_for_each_entry_safe(p, p_next, &pcm->port_list, head) {
905                         if (p == port && p->id == port->id &&
906                                         p->pin == port->pin) {
907                                 hdac_hdmi_jack_report(pcm, port, false);
908                                 list_del(&p->head);
909                         }
910                 }
911         }
912 
913         /*
914          * Jack status is not reported during device probe as the
915          * PCMs are not registered by then. So report it here.
916          */
917         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
918                 if (!strcmp(cvt_name, pcm->cvt->name)) {
919                         list_add_tail(&port->head, &pcm->port_list);
920                         if (port->eld.monitor_present && port->eld.eld_valid) {
921                                 hdac_hdmi_jack_report(pcm, port, true);
922                                 mutex_unlock(&hdmi->pin_mutex);
923                                 return ret;
924                         }
925                 }
926         }
927         mutex_unlock(&hdmi->pin_mutex);
928 
929         return ret;
930 }
931 
932 /*
933  * Ideally the Mux inputs should be based on the num_muxs enumerated, but
934  * the display driver seem to be programming the connection list for the pin
935  * widget runtime.
936  *
937  * So programming all the possible inputs for the mux, the user has to take
938  * care of selecting the right one and leaving all other inputs selected to
939  * "NONE"
940  */
941 static int hdac_hdmi_create_pin_port_muxs(struct hdac_device *hdev,
942                                 struct hdac_hdmi_port *port,
943                                 struct snd_soc_dapm_widget *widget,
944                                 const char *widget_name)
945 {
946         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
947         struct hdac_hdmi_pin *pin = port->pin;
948         struct snd_kcontrol_new *kc;
949         struct hdac_hdmi_cvt *cvt;
950         struct soc_enum *se;
951         char kc_name[NAME_SIZE];
952         char mux_items[NAME_SIZE];
953         /* To hold inputs to the Pin mux */
954         char *items[HDA_MAX_CONNECTIONS];
955         int i = 0;
956         int num_items = hdmi->num_cvt + 1;
957 
958         kc = devm_kzalloc(&hdev->dev, sizeof(*kc), GFP_KERNEL);
959         if (!kc)
960                 return -ENOMEM;
961 
962         se = devm_kzalloc(&hdev->dev, sizeof(*se), GFP_KERNEL);
963         if (!se)
964                 return -ENOMEM;
965 
966         snprintf(kc_name, NAME_SIZE, "Pin %d port %d Input",
967                                                 pin->nid, port->id);
968         kc->name = devm_kstrdup(&hdev->dev, kc_name, GFP_KERNEL);
969         if (!kc->name)
970                 return -ENOMEM;
971 
972         kc->private_value = (long)se;
973         kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
974         kc->access = 0;
975         kc->info = snd_soc_info_enum_double;
976         kc->put = hdac_hdmi_set_pin_port_mux;
977         kc->get = snd_soc_dapm_get_enum_double;
978 
979         se->reg = SND_SOC_NOPM;
980 
981         /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
982         se->items = num_items;
983         se->mask = roundup_pow_of_two(se->items) - 1;
984 
985         sprintf(mux_items, "NONE");
986         items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
987         if (!items[i])
988                 return -ENOMEM;
989 
990         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
991                 i++;
992                 sprintf(mux_items, "cvt %d", cvt->nid);
993                 items[i] = devm_kstrdup(&hdev->dev, mux_items, GFP_KERNEL);
994                 if (!items[i])
995                         return -ENOMEM;
996         }
997 
998         se->texts = devm_kmemdup(&hdev->dev, items,
999                         (num_items  * sizeof(char *)), GFP_KERNEL);
1000         if (!se->texts)
1001                 return -ENOMEM;
1002 
1003         return hdac_hdmi_fill_widget_info(&hdev->dev, widget,
1004                         snd_soc_dapm_mux, port, widget_name, NULL, kc, 1,
1005                         hdac_hdmi_pin_mux_widget_event,
1006                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG);
1007 }
1008 
1009 /* Add cvt <- input <- mux route map */
1010 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_device *hdev,
1011                         struct snd_soc_dapm_widget *widgets,
1012                         struct snd_soc_dapm_route *route, int rindex)
1013 {
1014         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1015         const struct snd_kcontrol_new *kc;
1016         struct soc_enum *se;
1017         int mux_index = hdmi->num_cvt + hdmi->num_ports;
1018         int i, j;
1019 
1020         for (i = 0; i < hdmi->num_ports; i++) {
1021                 kc = widgets[mux_index].kcontrol_news;
1022                 se = (struct soc_enum *)kc->private_value;
1023                 for (j = 0; j < hdmi->num_cvt; j++) {
1024                         hdac_hdmi_fill_route(&route[rindex],
1025                                         widgets[mux_index].name,
1026                                         se->texts[j + 1],
1027                                         widgets[j].name, NULL);
1028 
1029                         rindex++;
1030                 }
1031 
1032                 mux_index++;
1033         }
1034 }
1035 
1036 /*
1037  * Widgets are added in the below sequence
1038  *      Converter widgets for num converters enumerated
1039  *      Pin-port widgets for num ports for Pins enumerated
1040  *      Pin-port mux widgets to represent connenction list of pin widget
1041  *
1042  * For each port, one Mux and One output widget is added
1043  * Total widgets elements = num_cvt + (num_ports * 2);
1044  *
1045  * Routes are added as below:
1046  *      pin-port mux -> pin (based on num_ports)
1047  *      cvt -> "Input sel control" -> pin-port_mux
1048  *
1049  * Total route elements:
1050  *      num_ports + (pin_muxes * num_cvt)
1051  */
1052 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
1053 {
1054         struct snd_soc_dapm_widget *widgets;
1055         struct snd_soc_dapm_route *route;
1056         struct hdac_device *hdev = dev_to_hdac_dev(dapm->dev);
1057         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1058         struct snd_soc_dai_driver *dai_drv = hdmi->dai_drv;
1059         char widget_name[NAME_SIZE];
1060         struct hdac_hdmi_cvt *cvt;
1061         struct hdac_hdmi_pin *pin;
1062         int ret, i = 0, num_routes = 0, j;
1063 
1064         if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
1065                 return -EINVAL;
1066 
1067         widgets = devm_kzalloc(dapm->dev, (sizeof(*widgets) *
1068                                 ((2 * hdmi->num_ports) + hdmi->num_cvt)),
1069                                 GFP_KERNEL);
1070 
1071         if (!widgets)
1072                 return -ENOMEM;
1073 
1074         /* DAPM widgets to represent each converter widget */
1075         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1076                 sprintf(widget_name, "Converter %d", cvt->nid);
1077                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1078                         snd_soc_dapm_aif_in, cvt,
1079                         widget_name, dai_drv[i].playback.stream_name, NULL, 0,
1080                         hdac_hdmi_cvt_output_widget_event,
1081                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
1082                 if (ret < 0)
1083                         return ret;
1084                 i++;
1085         }
1086 
1087         list_for_each_entry(pin, &hdmi->pin_list, head) {
1088                 for (j = 0; j < pin->num_ports; j++) {
1089                         sprintf(widget_name, "hif%d-%d Output",
1090                                 pin->nid, pin->ports[j].id);
1091                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1092                                         snd_soc_dapm_output, &pin->ports[j],
1093                                         widget_name, NULL, NULL, 0,
1094                                         hdac_hdmi_pin_output_widget_event,
1095                                         SND_SOC_DAPM_PRE_PMU |
1096                                         SND_SOC_DAPM_POST_PMD);
1097                         if (ret < 0)
1098                                 return ret;
1099                         pin->ports[j].output_pin = widgets[i].name;
1100                         i++;
1101                 }
1102         }
1103 
1104         /* DAPM widgets to represent the connection list to pin widget */
1105         list_for_each_entry(pin, &hdmi->pin_list, head) {
1106                 for (j = 0; j < pin->num_ports; j++) {
1107                         sprintf(widget_name, "Pin%d-Port%d Mux",
1108                                 pin->nid, pin->ports[j].id);
1109                         ret = hdac_hdmi_create_pin_port_muxs(hdev,
1110                                                 &pin->ports[j], &widgets[i],
1111                                                 widget_name);
1112                         if (ret < 0)
1113                                 return ret;
1114                         i++;
1115 
1116                         /* For cvt to pin_mux mapping */
1117                         num_routes += hdmi->num_cvt;
1118 
1119                         /* For pin_mux to pin mapping */
1120                         num_routes++;
1121                 }
1122         }
1123 
1124         route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
1125                                                         GFP_KERNEL);
1126         if (!route)
1127                 return -ENOMEM;
1128 
1129         i = 0;
1130         /* Add pin <- NULL <- mux route map */
1131         list_for_each_entry(pin, &hdmi->pin_list, head) {
1132                 for (j = 0; j < pin->num_ports; j++) {
1133                         int sink_index = i + hdmi->num_cvt;
1134                         int src_index = sink_index + pin->num_ports *
1135                                                 hdmi->num_pin;
1136 
1137                         hdac_hdmi_fill_route(&route[i],
1138                                 widgets[sink_index].name, NULL,
1139                                 widgets[src_index].name, NULL);
1140                         i++;
1141                 }
1142         }
1143 
1144         hdac_hdmi_add_pinmux_cvt_route(hdev, widgets, route, i);
1145 
1146         snd_soc_dapm_new_controls(dapm, widgets,
1147                 ((2 * hdmi->num_ports) + hdmi->num_cvt));
1148 
1149         snd_soc_dapm_add_routes(dapm, route, num_routes);
1150         snd_soc_dapm_new_widgets(dapm->card);
1151 
1152         return 0;
1153 
1154 }
1155 
1156 static int hdac_hdmi_init_dai_map(struct hdac_device *hdev)
1157 {
1158         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1159         struct hdac_hdmi_dai_port_map *dai_map;
1160         struct hdac_hdmi_cvt *cvt;
1161         int dai_id = 0;
1162 
1163         if (list_empty(&hdmi->cvt_list))
1164                 return -EINVAL;
1165 
1166         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1167                 dai_map = &hdmi->dai_map[dai_id];
1168                 dai_map->dai_id = dai_id;
1169                 dai_map->cvt = cvt;
1170 
1171                 dai_id++;
1172 
1173                 if (dai_id == HDA_MAX_CVTS) {
1174                         dev_warn(&hdev->dev,
1175                                 "Max dais supported: %d\n", dai_id);
1176                         break;
1177                 }
1178         }
1179 
1180         return 0;
1181 }
1182 
1183 static int hdac_hdmi_add_cvt(struct hdac_device *hdev, hda_nid_t nid)
1184 {
1185         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1186         struct hdac_hdmi_cvt *cvt;
1187         char name[NAME_SIZE];
1188 
1189         cvt = devm_kzalloc(&hdev->dev, sizeof(*cvt), GFP_KERNEL);
1190         if (!cvt)
1191                 return -ENOMEM;
1192 
1193         cvt->nid = nid;
1194         sprintf(name, "cvt %d", cvt->nid);
1195         cvt->name = devm_kstrdup(&hdev->dev, name, GFP_KERNEL);
1196         if (!cvt->name)
1197                 return -ENOMEM;
1198 
1199         list_add_tail(&cvt->head, &hdmi->cvt_list);
1200         hdmi->num_cvt++;
1201 
1202         return hdac_hdmi_query_cvt_params(hdev, cvt);
1203 }
1204 
1205 static int hdac_hdmi_parse_eld(struct hdac_device *hdev,
1206                         struct hdac_hdmi_port *port)
1207 {
1208         unsigned int ver, mnl;
1209 
1210         ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
1211                                                 >> DRM_ELD_VER_SHIFT;
1212 
1213         if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
1214                 dev_err(&hdev->dev, "HDMI: Unknown ELD version %d\n", ver);
1215                 return -EINVAL;
1216         }
1217 
1218         mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
1219                 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
1220 
1221         if (mnl > ELD_MAX_MNL) {
1222                 dev_err(&hdev->dev, "HDMI: MNL Invalid %d\n", mnl);
1223                 return -EINVAL;
1224         }
1225 
1226         port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER];
1227 
1228         return 0;
1229 }
1230 
1231 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin,
1232                                     struct hdac_hdmi_port *port)
1233 {
1234         struct hdac_device *hdev = pin->hdev;
1235         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1236         struct hdac_hdmi_pcm *pcm;
1237         int size = 0;
1238         int port_id = -1;
1239 
1240         if (!hdmi)
1241                 return;
1242 
1243         /*
1244          * In case of non MST pin, get_eld info API expectes port
1245          * to be -1.
1246          */
1247         mutex_lock(&hdmi->pin_mutex);
1248         port->eld.monitor_present = false;
1249 
1250         if (pin->mst_capable)
1251                 port_id = port->id;
1252 
1253         size = snd_hdac_acomp_get_eld(hdev, pin->nid, port_id,
1254                                 &port->eld.monitor_present,
1255                                 port->eld.eld_buffer,
1256                                 ELD_MAX_SIZE);
1257 
1258         if (size > 0) {
1259                 size = min(size, ELD_MAX_SIZE);
1260                 if (hdac_hdmi_parse_eld(hdev, port) < 0)
1261                         size = -EINVAL;
1262         }
1263 
1264         if (size > 0) {
1265                 port->eld.eld_valid = true;
1266                 port->eld.eld_size = size;
1267         } else {
1268                 port->eld.eld_valid = false;
1269                 port->eld.eld_size = 0;
1270         }
1271 
1272         pcm = hdac_hdmi_get_pcm(hdev, port);
1273 
1274         if (!port->eld.monitor_present || !port->eld.eld_valid) {
1275 
1276                 dev_err(&hdev->dev, "%s: disconnect for pin:port %d:%d\n",
1277                                                 __func__, pin->nid, port->id);
1278 
1279                 /*
1280                  * PCMs are not registered during device probe, so don't
1281                  * report jack here. It will be done in usermode mux
1282                  * control select.
1283                  */
1284                 if (pcm)
1285                         hdac_hdmi_jack_report(pcm, port, false);
1286 
1287                 mutex_unlock(&hdmi->pin_mutex);
1288                 return;
1289         }
1290 
1291         if (port->eld.monitor_present && port->eld.eld_valid) {
1292                 if (pcm)
1293                         hdac_hdmi_jack_report(pcm, port, true);
1294 
1295                 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
1296                           port->eld.eld_buffer, port->eld.eld_size, false);
1297 
1298         }
1299         mutex_unlock(&hdmi->pin_mutex);
1300 }
1301 
1302 static int hdac_hdmi_add_ports(struct hdac_device *hdev,
1303                                struct hdac_hdmi_pin *pin)
1304 {
1305         struct hdac_hdmi_port *ports;
1306         int max_ports = HDA_MAX_PORTS;
1307         int i;
1308 
1309         /*
1310          * FIXME: max_port may vary for each platform, so pass this as
1311          * as driver data or query from i915 interface when this API is
1312          * implemented.
1313          */
1314 
1315         ports = devm_kcalloc(&hdev->dev, max_ports, sizeof(*ports), GFP_KERNEL);
1316         if (!ports)
1317                 return -ENOMEM;
1318 
1319         for (i = 0; i < max_ports; i++) {
1320                 ports[i].id = i;
1321                 ports[i].pin = pin;
1322         }
1323         pin->ports = ports;
1324         pin->num_ports = max_ports;
1325         return 0;
1326 }
1327 
1328 static int hdac_hdmi_add_pin(struct hdac_device *hdev, hda_nid_t nid)
1329 {
1330         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1331         struct hdac_hdmi_pin *pin;
1332         int ret;
1333 
1334         pin = devm_kzalloc(&hdev->dev, sizeof(*pin), GFP_KERNEL);
1335         if (!pin)
1336                 return -ENOMEM;
1337 
1338         pin->nid = nid;
1339         pin->mst_capable = false;
1340         pin->hdev = hdev;
1341         ret = hdac_hdmi_add_ports(hdev, pin);
1342         if (ret < 0)
1343                 return ret;
1344 
1345         list_add_tail(&pin->head, &hdmi->pin_list);
1346         hdmi->num_pin++;
1347         hdmi->num_ports += pin->num_ports;
1348 
1349         return 0;
1350 }
1351 
1352 #define INTEL_VENDOR_NID_0x2 0x02
1353 #define INTEL_VENDOR_NID_0x8 0x08
1354 #define INTEL_VENDOR_NID_0xb 0x0b
1355 #define INTEL_GET_VENDOR_VERB 0xf81
1356 #define INTEL_SET_VENDOR_VERB 0x781
1357 #define INTEL_EN_DP12           0x02 /* enable DP 1.2 features */
1358 #define INTEL_EN_ALL_PIN_CVTS   0x01 /* enable 2nd & 3rd pins and convertors */
1359 
1360 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdev)
1361 {
1362         unsigned int vendor_param;
1363         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1364         unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1365 
1366         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1367                                 INTEL_GET_VENDOR_VERB, 0);
1368         if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1369                 return;
1370 
1371         vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1372         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1373                                 INTEL_SET_VENDOR_VERB, vendor_param);
1374         if (vendor_param == -1)
1375                 return;
1376 }
1377 
1378 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdev)
1379 {
1380         unsigned int vendor_param;
1381         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1382         unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1383 
1384         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1385                                 INTEL_GET_VENDOR_VERB, 0);
1386         if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1387                 return;
1388 
1389         /* enable DP1.2 mode */
1390         vendor_param |= INTEL_EN_DP12;
1391         vendor_param = snd_hdac_codec_read(hdev, vendor_nid, 0,
1392                                 INTEL_SET_VENDOR_VERB, vendor_param);
1393         if (vendor_param == -1)
1394                 return;
1395 
1396 }
1397 
1398 static const struct snd_soc_dai_ops hdmi_dai_ops = {
1399         .startup = hdac_hdmi_pcm_open,
1400         .shutdown = hdac_hdmi_pcm_close,
1401         .hw_params = hdac_hdmi_set_hw_params,
1402         .set_tdm_slot = hdac_hdmi_set_tdm_slot,
1403 };
1404 
1405 /*
1406  * Each converter can support a stream independently. So a dai is created
1407  * based on the number of converter queried.
1408  */
1409 static int hdac_hdmi_create_dais(struct hdac_device *hdev,
1410                 struct snd_soc_dai_driver **dais,
1411                 struct hdac_hdmi_priv *hdmi, int num_dais)
1412 {
1413         struct snd_soc_dai_driver *hdmi_dais;
1414         struct hdac_hdmi_cvt *cvt;
1415         char name[NAME_SIZE], dai_name[NAME_SIZE];
1416         int i = 0;
1417         u32 rates, bps;
1418         unsigned int rate_max = 384000, rate_min = 8000;
1419         u64 formats;
1420         int ret;
1421 
1422         hdmi_dais = devm_kzalloc(&hdev->dev,
1423                         (sizeof(*hdmi_dais) * num_dais),
1424                         GFP_KERNEL);
1425         if (!hdmi_dais)
1426                 return -ENOMEM;
1427 
1428         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1429                 ret = snd_hdac_query_supported_pcm(hdev, cvt->nid,
1430                                         &rates, &formats, &bps);
1431                 if (ret)
1432                         return ret;
1433 
1434                 /* Filter out 44.1, 88.2 and 176.4Khz */
1435                 rates &= ~(SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_88200 |
1436                            SNDRV_PCM_RATE_176400);
1437                 if (!rates)
1438                         return -EINVAL;
1439 
1440                 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1441                 hdmi_dais[i].name = devm_kstrdup(&hdev->dev,
1442                                         dai_name, GFP_KERNEL);
1443 
1444                 if (!hdmi_dais[i].name)
1445                         return -ENOMEM;
1446 
1447                 snprintf(name, sizeof(name), "hifi%d", i+1);
1448                 hdmi_dais[i].playback.stream_name =
1449                                 devm_kstrdup(&hdev->dev, name, GFP_KERNEL);
1450                 if (!hdmi_dais[i].playback.stream_name)
1451                         return -ENOMEM;
1452 
1453                 /*
1454                  * Set caps based on capability queried from the converter.
1455                  * It will be constrained runtime based on ELD queried.
1456                  */
1457                 hdmi_dais[i].playback.formats = formats;
1458                 hdmi_dais[i].playback.rates = rates;
1459                 hdmi_dais[i].playback.rate_max = rate_max;
1460                 hdmi_dais[i].playback.rate_min = rate_min;
1461                 hdmi_dais[i].playback.channels_min = 2;
1462                 hdmi_dais[i].playback.channels_max = 2;
1463                 hdmi_dais[i].playback.sig_bits = bps;
1464                 hdmi_dais[i].ops = &hdmi_dai_ops;
1465                 i++;
1466         }
1467 
1468         *dais = hdmi_dais;
1469         hdmi->dai_drv = hdmi_dais;
1470 
1471         return 0;
1472 }
1473 
1474 /*
1475  * Parse all nodes and store the cvt/pin nids in array
1476  * Add one time initialization for pin and cvt widgets
1477  */
1478 static int hdac_hdmi_parse_and_map_nid(struct hdac_device *hdev,
1479                 struct snd_soc_dai_driver **dais, int *num_dais)
1480 {
1481         hda_nid_t nid;
1482         int i, num_nodes;
1483         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1484         int ret;
1485 
1486         hdac_hdmi_skl_enable_all_pins(hdev);
1487         hdac_hdmi_skl_enable_dp12(hdev);
1488 
1489         num_nodes = snd_hdac_get_sub_nodes(hdev, hdev->afg, &nid);
1490         if (!nid || num_nodes <= 0) {
1491                 dev_warn(&hdev->dev, "HDMI: failed to get afg sub nodes\n");
1492                 return -EINVAL;
1493         }
1494 
1495         for (i = 0; i < num_nodes; i++, nid++) {
1496                 unsigned int caps;
1497                 unsigned int type;
1498 
1499                 caps = get_wcaps(hdev, nid);
1500                 type = get_wcaps_type(caps);
1501 
1502                 if (!(caps & AC_WCAP_DIGITAL))
1503                         continue;
1504 
1505                 switch (type) {
1506 
1507                 case AC_WID_AUD_OUT:
1508                         ret = hdac_hdmi_add_cvt(hdev, nid);
1509                         if (ret < 0)
1510                                 return ret;
1511                         break;
1512 
1513                 case AC_WID_PIN:
1514                         ret = hdac_hdmi_add_pin(hdev, nid);
1515                         if (ret < 0)
1516                                 return ret;
1517                         break;
1518                 }
1519         }
1520 
1521         if (!hdmi->num_pin || !hdmi->num_cvt) {
1522                 ret = -EIO;
1523                 dev_err(&hdev->dev, "Bad pin/cvt setup in %s\n", __func__);
1524                 return ret;
1525         }
1526 
1527         ret = hdac_hdmi_create_dais(hdev, dais, hdmi, hdmi->num_cvt);
1528         if (ret) {
1529                 dev_err(&hdev->dev, "Failed to create dais with err: %d\n",
1530                         ret);
1531                 return ret;
1532         }
1533 
1534         *num_dais = hdmi->num_cvt;
1535         ret = hdac_hdmi_init_dai_map(hdev);
1536         if (ret < 0)
1537                 dev_err(&hdev->dev, "Failed to init DAI map with err: %d\n",
1538                         ret);
1539         return ret;
1540 }
1541 
1542 static int hdac_hdmi_pin2port(void *aptr, int pin)
1543 {
1544         struct hdac_device *hdev = aptr;
1545         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1546         const int *map = hdmi->drv_data->port_map;
1547         int i;
1548 
1549         if (!hdmi->drv_data->port_num)
1550                 return pin - 4; /* map NID 0x05 -> port #1 */
1551 
1552         /*
1553          * looking for the pin number in the mapping table and return
1554          * the index which indicate the port number
1555          */
1556         for (i = 0; i < hdmi->drv_data->port_num; i++) {
1557                 if (pin == map[i])
1558                         return i + 1;
1559         }
1560 
1561         /* return -1 if pin number exceeds our expectation */
1562         dev_err(&hdev->dev, "Can't find the port for pin %d\n", pin);
1563         return -1;
1564 }
1565 
1566 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
1567 {
1568         struct hdac_device *hdev = aptr;
1569         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1570         struct hdac_hdmi_pin *pin = NULL;
1571         struct hdac_hdmi_port *hport = NULL;
1572         struct snd_soc_component *component = hdmi->component;
1573         int i;
1574         hda_nid_t pin_nid;
1575 
1576         if (!hdmi->drv_data->port_num) {
1577                 /* for legacy platforms */
1578                 pin_nid = port + 0x04;
1579         } else if (port < hdmi->drv_data->port_num) {
1580                 /* get pin number from the pin2port mapping table */
1581                 pin_nid = hdmi->drv_data->port_map[port - 1];
1582         } else {
1583                 dev_err(&hdev->dev, "Can't find the pin for port %d\n", port);
1584                 return;
1585         }
1586 
1587         dev_dbg(&hdev->dev, "%s: for pin:%d port=%d\n", __func__,
1588                                                         pin_nid, pipe);
1589 
1590         /*
1591          * skip notification during system suspend (but not in runtime PM);
1592          * the state will be updated at resume. Also since the ELD and
1593          * connection states are updated in anyway at the end of the resume,
1594          * we can skip it when received during PM process.
1595          */
1596         if (snd_power_get_state(component->card->snd_card) !=
1597                         SNDRV_CTL_POWER_D0)
1598                 return;
1599 
1600         if (atomic_read(&hdev->in_pm))
1601                 return;
1602 
1603         list_for_each_entry(pin, &hdmi->pin_list, head) {
1604                 if (pin->nid != pin_nid)
1605                         continue;
1606 
1607                 /* In case of non MST pin, pipe is -1 */
1608                 if (pipe == -1) {
1609                         pin->mst_capable = false;
1610                         /* if not MST, default is port[0] */
1611                         hport = &pin->ports[0];
1612                 } else {
1613                         for (i = 0; i < pin->num_ports; i++) {
1614                                 pin->mst_capable = true;
1615                                 if (pin->ports[i].id == pipe) {
1616                                         hport = &pin->ports[i];
1617                                         break;
1618                                 }
1619                         }
1620                 }
1621 
1622                 if (hport)
1623                         hdac_hdmi_present_sense(pin, hport);
1624         }
1625 
1626 }
1627 
1628 static struct drm_audio_component_audio_ops aops = {
1629         .pin2port       = hdac_hdmi_pin2port,
1630         .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1631 };
1632 
1633 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1634                                                 int device)
1635 {
1636         struct snd_soc_pcm_runtime *rtd;
1637 
1638         for_each_card_rtds(card, rtd) {
1639                 if (rtd->pcm && (rtd->pcm->device == device))
1640                         return rtd->pcm;
1641         }
1642 
1643         return NULL;
1644 }
1645 
1646 /* create jack pin kcontrols */
1647 static int create_fill_jack_kcontrols(struct snd_soc_card *card,
1648                                     struct hdac_device *hdev)
1649 {
1650         struct hdac_hdmi_pin *pin;
1651         struct snd_kcontrol_new *kc;
1652         char kc_name[NAME_SIZE], xname[NAME_SIZE];
1653         char *name;
1654         int i = 0, j;
1655         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1656         struct snd_soc_component *component = hdmi->component;
1657 
1658         kc = devm_kcalloc(component->dev, hdmi->num_ports,
1659                                 sizeof(*kc), GFP_KERNEL);
1660 
1661         if (!kc)
1662                 return -ENOMEM;
1663 
1664         list_for_each_entry(pin, &hdmi->pin_list, head) {
1665                 for (j = 0; j < pin->num_ports; j++) {
1666                         snprintf(xname, sizeof(xname), "hif%d-%d Jack",
1667                                                 pin->nid, pin->ports[j].id);
1668                         name = devm_kstrdup(component->dev, xname, GFP_KERNEL);
1669                         if (!name)
1670                                 return -ENOMEM;
1671                         snprintf(kc_name, sizeof(kc_name), "%s Switch", xname);
1672                         kc[i].name = devm_kstrdup(component->dev, kc_name,
1673                                                         GFP_KERNEL);
1674                         if (!kc[i].name)
1675                                 return -ENOMEM;
1676 
1677                         kc[i].private_value = (unsigned long)name;
1678                         kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1679                         kc[i].access = 0;
1680                         kc[i].info = snd_soc_dapm_info_pin_switch;
1681                         kc[i].put = snd_soc_dapm_put_pin_switch;
1682                         kc[i].get = snd_soc_dapm_get_pin_switch;
1683                         i++;
1684                 }
1685         }
1686 
1687         return snd_soc_add_card_controls(card, kc, i);
1688 }
1689 
1690 int hdac_hdmi_jack_port_init(struct snd_soc_component *component,
1691                         struct snd_soc_dapm_context *dapm)
1692 {
1693         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1694         struct hdac_device *hdev = hdmi->hdev;
1695         struct hdac_hdmi_pin *pin;
1696         struct snd_soc_dapm_widget *widgets;
1697         struct snd_soc_dapm_route *route;
1698         char w_name[NAME_SIZE];
1699         int i = 0, j, ret;
1700 
1701         widgets = devm_kcalloc(dapm->dev, hdmi->num_ports,
1702                                 sizeof(*widgets), GFP_KERNEL);
1703 
1704         if (!widgets)
1705                 return -ENOMEM;
1706 
1707         route = devm_kcalloc(dapm->dev, hdmi->num_ports,
1708                                 sizeof(*route), GFP_KERNEL);
1709         if (!route)
1710                 return -ENOMEM;
1711 
1712         /* create Jack DAPM widget */
1713         list_for_each_entry(pin, &hdmi->pin_list, head) {
1714                 for (j = 0; j < pin->num_ports; j++) {
1715                         snprintf(w_name, sizeof(w_name), "hif%d-%d Jack",
1716                                                 pin->nid, pin->ports[j].id);
1717 
1718                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1719                                         snd_soc_dapm_spk, NULL,
1720                                         w_name, NULL, NULL, 0, NULL, 0);
1721                         if (ret < 0)
1722                                 return ret;
1723 
1724                         pin->ports[j].jack_pin = widgets[i].name;
1725                         pin->ports[j].dapm = dapm;
1726 
1727                         /* add to route from Jack widget to output */
1728                         hdac_hdmi_fill_route(&route[i], pin->ports[j].jack_pin,
1729                                         NULL, pin->ports[j].output_pin, NULL);
1730 
1731                         i++;
1732                 }
1733         }
1734 
1735         /* Add Route from Jack widget to the output widget */
1736         ret = snd_soc_dapm_new_controls(dapm, widgets, hdmi->num_ports);
1737         if (ret < 0)
1738                 return ret;
1739 
1740         ret = snd_soc_dapm_add_routes(dapm, route, hdmi->num_ports);
1741         if (ret < 0)
1742                 return ret;
1743 
1744         ret = snd_soc_dapm_new_widgets(dapm->card);
1745         if (ret < 0)
1746                 return ret;
1747 
1748         /* Add Jack Pin switch Kcontrol */
1749         ret = create_fill_jack_kcontrols(dapm->card, hdev);
1750 
1751         if (ret < 0)
1752                 return ret;
1753 
1754         /* default set the Jack Pin switch to OFF */
1755         list_for_each_entry(pin, &hdmi->pin_list, head) {
1756                 for (j = 0; j < pin->num_ports; j++)
1757                         snd_soc_dapm_disable_pin(pin->ports[j].dapm,
1758                                                 pin->ports[j].jack_pin);
1759         }
1760 
1761         return 0;
1762 }
1763 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_port_init);
1764 
1765 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device,
1766                                 struct snd_soc_jack *jack)
1767 {
1768         struct snd_soc_component *component = dai->component;
1769         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1770         struct hdac_device *hdev = hdmi->hdev;
1771         struct hdac_hdmi_pcm *pcm;
1772         struct snd_pcm *snd_pcm;
1773         int err;
1774 
1775         /*
1776          * this is a new PCM device, create new pcm and
1777          * add to the pcm list
1778          */
1779         pcm = devm_kzalloc(&hdev->dev, sizeof(*pcm), GFP_KERNEL);
1780         if (!pcm)
1781                 return -ENOMEM;
1782         pcm->pcm_id = device;
1783         pcm->cvt = hdmi->dai_map[dai->id].cvt;
1784         pcm->jack_event = 0;
1785         pcm->jack = jack;
1786         mutex_init(&pcm->lock);
1787         INIT_LIST_HEAD(&pcm->port_list);
1788         snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1789         if (snd_pcm) {
1790                 err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1791                 if (err < 0) {
1792                         dev_err(&hdev->dev,
1793                                 "chmap control add failed with err: %d for pcm: %d\n",
1794                                 err, device);
1795                         return err;
1796                 }
1797         }
1798 
1799         list_add_tail(&pcm->head, &hdmi->pcm_list);
1800 
1801         return 0;
1802 }
1803 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1804 
1805 static void hdac_hdmi_present_sense_all_pins(struct hdac_device *hdev,
1806                         struct hdac_hdmi_priv *hdmi, bool detect_pin_caps)
1807 {
1808         int i;
1809         struct hdac_hdmi_pin *pin;
1810 
1811         list_for_each_entry(pin, &hdmi->pin_list, head) {
1812                 if (detect_pin_caps) {
1813 
1814                         if (hdac_hdmi_get_port_len(hdev, pin->nid)  == 0)
1815                                 pin->mst_capable = false;
1816                         else
1817                                 pin->mst_capable = true;
1818                 }
1819 
1820                 for (i = 0; i < pin->num_ports; i++) {
1821                         if (!pin->mst_capable && i > 0)
1822                                 continue;
1823 
1824                         hdac_hdmi_present_sense(pin, &pin->ports[i]);
1825                 }
1826         }
1827 }
1828 
1829 static int hdmi_codec_probe(struct snd_soc_component *component)
1830 {
1831         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1832         struct hdac_device *hdev = hdmi->hdev;
1833         struct snd_soc_dapm_context *dapm =
1834                 snd_soc_component_get_dapm(component);
1835         struct hdac_ext_link *hlink = NULL;
1836         int ret;
1837 
1838         hdmi->component = component;
1839 
1840         /*
1841          * hold the ref while we probe, also no need to drop the ref on
1842          * exit, we call pm_runtime_suspend() so that will do for us
1843          */
1844         hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
1845         if (!hlink) {
1846                 dev_err(&hdev->dev, "hdac link not found\n");
1847                 return -EIO;
1848         }
1849 
1850         snd_hdac_ext_bus_link_get(hdev->bus, hlink);
1851 
1852         ret = create_fill_widget_route_map(dapm);
1853         if (ret < 0)
1854                 return ret;
1855 
1856         aops.audio_ptr = hdev;
1857         ret = snd_hdac_acomp_register_notifier(hdev->bus, &aops);
1858         if (ret < 0) {
1859                 dev_err(&hdev->dev, "notifier register failed: err: %d\n", ret);
1860                 return ret;
1861         }
1862 
1863         hdac_hdmi_present_sense_all_pins(hdev, hdmi, true);
1864         /* Imp: Store the card pointer in hda_codec */
1865         hdmi->card = dapm->card->snd_card;
1866 
1867         /*
1868          * Setup a device_link between card device and HDMI codec device.
1869          * The card device is the consumer and the HDMI codec device is
1870          * the supplier. With this setting, we can make sure that the audio
1871          * domain in display power will be always turned on before operating
1872          * on the HDMI audio codec registers.
1873          * Let's use the flag DL_FLAG_AUTOREMOVE_CONSUMER. This can make
1874          * sure the device link is freed when the machine driver is removed.
1875          */
1876         device_link_add(component->card->dev, &hdev->dev, DL_FLAG_RPM_ACTIVE |
1877                         DL_FLAG_AUTOREMOVE_CONSUMER);
1878         /*
1879          * hdac_device core already sets the state to active and calls
1880          * get_noresume. So enable runtime and set the device to suspend.
1881          */
1882         pm_runtime_enable(&hdev->dev);
1883         pm_runtime_put(&hdev->dev);
1884         pm_runtime_suspend(&hdev->dev);
1885 
1886         return 0;
1887 }
1888 
1889 static void hdmi_codec_remove(struct snd_soc_component *component)
1890 {
1891         struct hdac_hdmi_priv *hdmi = snd_soc_component_get_drvdata(component);
1892         struct hdac_device *hdev = hdmi->hdev;
1893         int ret;
1894 
1895         ret = snd_hdac_acomp_register_notifier(hdev->bus, NULL);
1896         if (ret < 0)
1897                 dev_err(&hdev->dev, "notifier unregister failed: err: %d\n",
1898                                 ret);
1899 
1900         pm_runtime_disable(&hdev->dev);
1901 }
1902 
1903 #ifdef CONFIG_PM_SLEEP
1904 static int hdmi_codec_resume(struct device *dev)
1905 {
1906         struct hdac_device *hdev = dev_to_hdac_dev(dev);
1907         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1908         int ret;
1909 
1910         ret = pm_runtime_force_resume(dev);
1911         if (ret < 0)
1912                 return ret;
1913         /*
1914          * As the ELD notify callback request is not entertained while the
1915          * device is in suspend state. Need to manually check detection of
1916          * all pins here. pin capablity change is not support, so use the
1917          * already set pin caps.
1918          *
1919          * NOTE: this is safe to call even if the codec doesn't actually resume.
1920          * The pin check involves only with DRM audio component hooks, so it
1921          * works even if the HD-audio side is still dreaming peacefully.
1922          */
1923         hdac_hdmi_present_sense_all_pins(hdev, hdmi, false);
1924         return 0;
1925 }
1926 #else
1927 #define hdmi_codec_resume NULL
1928 #endif
1929 
1930 static const struct snd_soc_component_driver hdmi_hda_codec = {
1931         .probe                  = hdmi_codec_probe,
1932         .remove                 = hdmi_codec_remove,
1933         .use_pmdown_time        = 1,
1934         .endianness             = 1,
1935         .non_legacy_dai_naming  = 1,
1936 };
1937 
1938 static void hdac_hdmi_get_chmap(struct hdac_device *hdev, int pcm_idx,
1939                                         unsigned char *chmap)
1940 {
1941         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1942         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1943 
1944         memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap));
1945 }
1946 
1947 static void hdac_hdmi_set_chmap(struct hdac_device *hdev, int pcm_idx,
1948                                 unsigned char *chmap, int prepared)
1949 {
1950         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1951         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1952         struct hdac_hdmi_port *port;
1953 
1954         if (!pcm)
1955                 return;
1956 
1957         if (list_empty(&pcm->port_list))
1958                 return;
1959 
1960         mutex_lock(&pcm->lock);
1961         pcm->chmap_set = true;
1962         memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap));
1963         list_for_each_entry(port, &pcm->port_list, head)
1964                 if (prepared)
1965                         hdac_hdmi_setup_audio_infoframe(hdev, pcm, port);
1966         mutex_unlock(&pcm->lock);
1967 }
1968 
1969 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdev, int pcm_idx)
1970 {
1971         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1972         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1973 
1974         if (!pcm)
1975                 return false;
1976 
1977         if (list_empty(&pcm->port_list))
1978                 return false;
1979 
1980         return true;
1981 }
1982 
1983 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdev, int pcm_idx)
1984 {
1985         struct hdac_hdmi_priv *hdmi = hdev_to_hdmi_priv(hdev);
1986         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1987         struct hdac_hdmi_port *port;
1988 
1989         if (!pcm)
1990                 return 0;
1991 
1992         if (list_empty(&pcm->port_list))
1993                 return 0;
1994 
1995         port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head);
1996 
1997         if (!port || !port->eld.eld_valid)
1998                 return 0;
1999 
2000         return port->eld.info.spk_alloc;
2001 }
2002 
2003 static struct hdac_hdmi_drv_data intel_icl_drv_data  = {
2004         .vendor_nid = INTEL_VENDOR_NID_0x2,
2005         .port_map = icl_pin2port_map,
2006         .port_num = ARRAY_SIZE(icl_pin2port_map),
2007 };
2008 
2009 static struct hdac_hdmi_drv_data intel_glk_drv_data  = {
2010         .vendor_nid = INTEL_VENDOR_NID_0xb,
2011 };
2012 
2013 static struct hdac_hdmi_drv_data intel_drv_data  = {
2014         .vendor_nid = INTEL_VENDOR_NID_0x8,
2015 };
2016 
2017 static int hdac_hdmi_dev_probe(struct hdac_device *hdev)
2018 {
2019         struct hdac_hdmi_priv *hdmi_priv = NULL;
2020         struct snd_soc_dai_driver *hdmi_dais = NULL;
2021         struct hdac_ext_link *hlink = NULL;
2022         int num_dais = 0;
2023         int ret = 0;
2024         struct hdac_driver *hdrv = drv_to_hdac_driver(hdev->dev.driver);
2025         const struct hda_device_id *hdac_id = hdac_get_device_id(hdev, hdrv);
2026 
2027         /* hold the ref while we probe */
2028         hlink = snd_hdac_ext_bus_get_link(hdev->bus, dev_name(&hdev->dev));
2029         if (!hlink) {
2030                 dev_err(&hdev->dev, "hdac link not found\n");
2031                 return -EIO;
2032         }
2033 
2034         snd_hdac_ext_bus_link_get(hdev->bus, hlink);
2035 
2036         hdmi_priv = devm_kzalloc(&hdev->dev, sizeof(*hdmi_priv), GFP_KERNEL);
2037         if (hdmi_priv == NULL)
2038                 return -ENOMEM;
2039 
2040         snd_hdac_register_chmap_ops(hdev, &hdmi_priv->chmap);
2041         hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
2042         hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
2043         hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
2044         hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
2045         hdmi_priv->hdev = hdev;
2046 
2047         if (!hdac_id)
2048                 return -ENODEV;
2049 
2050         if (hdac_id->driver_data)
2051                 hdmi_priv->drv_data =
2052                         (struct hdac_hdmi_drv_data *)hdac_id->driver_data;
2053         else
2054                 hdmi_priv->drv_data = &intel_drv_data;
2055 
2056         dev_set_drvdata(&hdev->dev, hdmi_priv);
2057 
2058         INIT_LIST_HEAD(&hdmi_priv->pin_list);
2059         INIT_LIST_HEAD(&hdmi_priv->cvt_list);
2060         INIT_LIST_HEAD(&hdmi_priv->pcm_list);
2061         mutex_init(&hdmi_priv->pin_mutex);
2062 
2063         /*
2064          * Turned off in the runtime_suspend during the first explicit
2065          * pm_runtime_suspend call.
2066          */
2067         snd_hdac_display_power(hdev->bus, hdev->addr, true);
2068 
2069         ret = hdac_hdmi_parse_and_map_nid(hdev, &hdmi_dais, &num_dais);
2070         if (ret < 0) {
2071                 dev_err(&hdev->dev,
2072                         "Failed in parse and map nid with err: %d\n", ret);
2073                 return ret;
2074         }
2075         snd_hdac_refresh_widgets(hdev);
2076 
2077         /* ASoC specific initialization */
2078         ret = devm_snd_soc_register_component(&hdev->dev, &hdmi_hda_codec,
2079                                         hdmi_dais, num_dais);
2080 
2081         snd_hdac_ext_bus_link_put(hdev->bus, hlink);
2082 
2083         return ret;
2084 }
2085 
2086 static int hdac_hdmi_dev_remove(struct hdac_device *hdev)
2087 {
2088         snd_hdac_display_power(hdev->bus, hdev->addr, false);
2089 
2090         return 0;
2091 }
2092 
2093 #ifdef CONFIG_PM
2094 static int hdac_hdmi_runtime_suspend(struct device *dev)
2095 {
2096         struct hdac_device *hdev = dev_to_hdac_dev(dev);
2097         struct hdac_bus *bus = hdev->bus;
2098         struct hdac_ext_link *hlink = NULL;
2099 
2100         dev_dbg(dev, "Enter: %s\n", __func__);
2101 
2102         /* controller may not have been initialized for the first time */
2103         if (!bus)
2104                 return 0;
2105 
2106         /*
2107          * Power down afg.
2108          * codec_read is preferred over codec_write to set the power state.
2109          * This way verb is send to set the power state and response
2110          * is received. So setting power state is ensured without using loop
2111          * to read the state.
2112          */
2113         snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2114                                                         AC_PWRST_D3);
2115 
2116         hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
2117         if (!hlink) {
2118                 dev_err(dev, "hdac link not found\n");
2119                 return -EIO;
2120         }
2121 
2122         snd_hdac_codec_link_down(hdev);
2123         snd_hdac_ext_bus_link_put(bus, hlink);
2124 
2125         snd_hdac_display_power(bus, hdev->addr, false);
2126 
2127         return 0;
2128 }
2129 
2130 static int hdac_hdmi_runtime_resume(struct device *dev)
2131 {
2132         struct hdac_device *hdev = dev_to_hdac_dev(dev);
2133         struct hdac_bus *bus = hdev->bus;
2134         struct hdac_ext_link *hlink = NULL;
2135 
2136         dev_dbg(dev, "Enter: %s\n", __func__);
2137 
2138         /* controller may not have been initialized for the first time */
2139         if (!bus)
2140                 return 0;
2141 
2142         hlink = snd_hdac_ext_bus_get_link(bus, dev_name(dev));
2143         if (!hlink) {
2144                 dev_err(dev, "hdac link not found\n");
2145                 return -EIO;
2146         }
2147 
2148         snd_hdac_ext_bus_link_get(bus, hlink);
2149         snd_hdac_codec_link_up(hdev);
2150 
2151         snd_hdac_display_power(bus, hdev->addr, true);
2152 
2153         hdac_hdmi_skl_enable_all_pins(hdev);
2154         hdac_hdmi_skl_enable_dp12(hdev);
2155 
2156         /* Power up afg */
2157         snd_hdac_codec_read(hdev, hdev->afg, 0, AC_VERB_SET_POWER_STATE,
2158                                                         AC_PWRST_D0);
2159 
2160         return 0;
2161 }
2162 #else
2163 #define hdac_hdmi_runtime_suspend NULL
2164 #define hdac_hdmi_runtime_resume NULL
2165 #endif
2166 
2167 static const struct dev_pm_ops hdac_hdmi_pm = {
2168         SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
2169         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, hdmi_codec_resume)
2170 };
2171 
2172 static const struct hda_device_id hdmi_list[] = {
2173         HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
2174         HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
2175         HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
2176         HDA_CODEC_EXT_ENTRY(0x8086280c, 0x100000, "Cannonlake HDMI",
2177                                                    &intel_glk_drv_data),
2178         HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI",
2179                                                    &intel_glk_drv_data),
2180         HDA_CODEC_EXT_ENTRY(0x8086280f, 0x100000, "Icelake HDMI",
2181                                                    &intel_icl_drv_data),
2182         {}
2183 };
2184 
2185 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
2186 
2187 static struct hdac_driver hdmi_driver = {
2188         .driver = {
2189                 .name   = "HDMI HDA Codec",
2190                 .pm = &hdac_hdmi_pm,
2191         },
2192         .id_table       = hdmi_list,
2193         .probe          = hdac_hdmi_dev_probe,
2194         .remove         = hdac_hdmi_dev_remove,
2195 };
2196 
2197 static int __init hdmi_init(void)
2198 {
2199         return snd_hda_ext_driver_register(&hdmi_driver);
2200 }
2201 
2202 static void __exit hdmi_exit(void)
2203 {
2204         snd_hda_ext_driver_unregister(&hdmi_driver);
2205 }
2206 
2207 module_init(hdmi_init);
2208 module_exit(hdmi_exit);
2209 
2210 MODULE_LICENSE("GPL v2");
2211 MODULE_DESCRIPTION("HDMI HD codec");
2212 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
2213 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");
2214 

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