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Linux/sound/soc/codecs/hdac_hdmi.c

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  1 /*
  2  *  hdac_hdmi.c - ASoc HDA-HDMI codec driver for Intel platforms
  3  *
  4  *  Copyright (C) 2014-2015 Intel Corp
  5  *  Author: Samreen Nilofer <samreen.nilofer@intel.com>
  6  *          Subhransu S. Prusty <subhransu.s.prusty@intel.com>
  7  *  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  8  *
  9  *  This program is free software; you can redistribute it and/or modify
 10  *  it under the terms of the GNU General Public License as published by
 11  *  the Free Software Foundation; version 2 of the License.
 12  *
 13  *  This program is distributed in the hope that it will be useful, but
 14  *  WITHOUT ANY WARRANTY; without even the implied warranty of
 15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 16  *  General Public License for more details.
 17  *
 18  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 19  */
 20 #include <linux/init.h>
 21 #include <linux/delay.h>
 22 #include <linux/module.h>
 23 #include <linux/pm_runtime.h>
 24 #include <linux/hdmi.h>
 25 #include <drm/drm_edid.h>
 26 #include <sound/pcm_params.h>
 27 #include <sound/jack.h>
 28 #include <sound/soc.h>
 29 #include <sound/hdaudio_ext.h>
 30 #include <sound/hda_i915.h>
 31 #include <sound/pcm_drm_eld.h>
 32 #include <sound/hda_chmap.h>
 33 #include "../../hda/local.h"
 34 #include "hdac_hdmi.h"
 35 
 36 #define NAME_SIZE       32
 37 
 38 #define AMP_OUT_MUTE            0xb080
 39 #define AMP_OUT_UNMUTE          0xb000
 40 #define PIN_OUT                 (AC_PINCTL_OUT_EN)
 41 
 42 #define HDA_MAX_CONNECTIONS     32
 43 
 44 #define HDA_MAX_CVTS            3
 45 #define HDA_MAX_PORTS           3
 46 
 47 #define ELD_MAX_SIZE    256
 48 #define ELD_FIXED_BYTES 20
 49 
 50 #define ELD_VER_CEA_861D 2
 51 #define ELD_VER_PARTIAL 31
 52 #define ELD_MAX_MNL     16
 53 
 54 struct hdac_hdmi_cvt_params {
 55         unsigned int channels_min;
 56         unsigned int channels_max;
 57         u32 rates;
 58         u64 formats;
 59         unsigned int maxbps;
 60 };
 61 
 62 struct hdac_hdmi_cvt {
 63         struct list_head head;
 64         hda_nid_t nid;
 65         const char *name;
 66         struct hdac_hdmi_cvt_params params;
 67 };
 68 
 69 /* Currently only spk_alloc, more to be added */
 70 struct hdac_hdmi_parsed_eld {
 71         u8 spk_alloc;
 72 };
 73 
 74 struct hdac_hdmi_eld {
 75         bool    monitor_present;
 76         bool    eld_valid;
 77         int     eld_size;
 78         char    eld_buffer[ELD_MAX_SIZE];
 79         struct  hdac_hdmi_parsed_eld info;
 80 };
 81 
 82 struct hdac_hdmi_pin {
 83         struct list_head head;
 84         hda_nid_t nid;
 85         bool mst_capable;
 86         struct hdac_hdmi_port *ports;
 87         int num_ports;
 88         struct hdac_ext_device *edev;
 89 };
 90 
 91 struct hdac_hdmi_port {
 92         struct list_head head;
 93         int id;
 94         struct hdac_hdmi_pin *pin;
 95         int num_mux_nids;
 96         hda_nid_t mux_nids[HDA_MAX_CONNECTIONS];
 97         struct hdac_hdmi_eld eld;
 98         const char *jack_pin;
 99         struct snd_soc_dapm_context *dapm;
100         const char *output_pin;
101 };
102 
103 struct hdac_hdmi_pcm {
104         struct list_head head;
105         int pcm_id;
106         struct list_head port_list;
107         struct hdac_hdmi_cvt *cvt;
108         struct snd_soc_jack *jack;
109         int stream_tag;
110         int channels;
111         int format;
112         bool chmap_set;
113         unsigned char chmap[8]; /* ALSA API channel-map */
114         struct mutex lock;
115         int jack_event;
116 };
117 
118 struct hdac_hdmi_dai_port_map {
119         int dai_id;
120         struct hdac_hdmi_port *port;
121         struct hdac_hdmi_cvt *cvt;
122 };
123 
124 struct hdac_hdmi_drv_data {
125         unsigned int vendor_nid;
126 };
127 
128 struct hdac_hdmi_priv {
129         struct hdac_hdmi_dai_port_map dai_map[HDA_MAX_CVTS];
130         struct list_head pin_list;
131         struct list_head cvt_list;
132         struct list_head pcm_list;
133         int num_pin;
134         int num_cvt;
135         int num_ports;
136         struct mutex pin_mutex;
137         struct hdac_chmap chmap;
138         struct hdac_hdmi_drv_data *drv_data;
139 };
140 
141 static struct hdac_hdmi_pcm *
142 hdac_hdmi_get_pcm_from_cvt(struct hdac_hdmi_priv *hdmi,
143                            struct hdac_hdmi_cvt *cvt)
144 {
145         struct hdac_hdmi_pcm *pcm = NULL;
146 
147         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
148                 if (pcm->cvt == cvt)
149                         break;
150         }
151 
152         return pcm;
153 }
154 
155 static void hdac_hdmi_jack_report(struct hdac_hdmi_pcm *pcm,
156                 struct hdac_hdmi_port *port, bool is_connect)
157 {
158         struct hdac_ext_device *edev = port->pin->edev;
159 
160         if (is_connect)
161                 snd_soc_dapm_enable_pin(port->dapm, port->jack_pin);
162         else
163                 snd_soc_dapm_disable_pin(port->dapm, port->jack_pin);
164 
165         if (is_connect) {
166                 /*
167                  * Report Jack connect event when a device is connected
168                  * for the first time where same PCM is attached to multiple
169                  * ports.
170                  */
171                 if (pcm->jack_event == 0) {
172                         dev_dbg(&edev->hdac.dev,
173                                         "jack report for pcm=%d\n",
174                                         pcm->pcm_id);
175                         snd_soc_jack_report(pcm->jack, SND_JACK_AVOUT,
176                                                 SND_JACK_AVOUT);
177                 }
178                 pcm->jack_event++;
179         } else {
180                 /*
181                  * Report Jack disconnect event when a device is disconnected
182                  * is the only last connected device when same PCM is attached
183                  * to multiple ports.
184                  */
185                 if (pcm->jack_event == 1)
186                         snd_soc_jack_report(pcm->jack, 0, SND_JACK_AVOUT);
187                 if (pcm->jack_event > 0)
188                         pcm->jack_event--;
189         }
190 
191         snd_soc_dapm_sync(port->dapm);
192 }
193 
194 /* MST supported verbs */
195 /*
196  * Get the no devices that can be connected to a port on the Pin widget.
197  */
198 static int hdac_hdmi_get_port_len(struct hdac_ext_device *hdac, hda_nid_t nid)
199 {
200         unsigned int caps;
201         unsigned int type, param;
202 
203         caps = get_wcaps(&hdac->hdac, nid);
204         type = get_wcaps_type(caps);
205 
206         if (!(caps & AC_WCAP_DIGITAL) || (type != AC_WID_PIN))
207                 return 0;
208 
209         param = snd_hdac_read_parm_uncached(&hdac->hdac, nid,
210                                         AC_PAR_DEVLIST_LEN);
211         if (param == -1)
212                 return param;
213 
214         return param & AC_DEV_LIST_LEN_MASK;
215 }
216 
217 /*
218  * Get the port entry select on the pin. Return the port entry
219  * id selected on the pin. Return 0 means the first port entry
220  * is selected or MST is not supported.
221  */
222 static int hdac_hdmi_port_select_get(struct hdac_ext_device *hdac,
223                                         struct hdac_hdmi_port *port)
224 {
225         return snd_hdac_codec_read(&hdac->hdac, port->pin->nid,
226                                 0, AC_VERB_GET_DEVICE_SEL, 0);
227 }
228 
229 /*
230  * Sets the selected port entry for the configuring Pin widget verb.
231  * returns error if port set is not equal to port get otherwise success
232  */
233 static int hdac_hdmi_port_select_set(struct hdac_ext_device *hdac,
234                                         struct hdac_hdmi_port *port)
235 {
236         int num_ports;
237 
238         if (!port->pin->mst_capable)
239                 return 0;
240 
241         /* AC_PAR_DEVLIST_LEN is 0 based. */
242         num_ports = hdac_hdmi_get_port_len(hdac, port->pin->nid);
243 
244         if (num_ports < 0)
245                 return -EIO;
246         /*
247          * Device List Length is a 0 based integer value indicating the
248          * number of sink device that a MST Pin Widget can support.
249          */
250         if (num_ports + 1  < port->id)
251                 return 0;
252 
253         snd_hdac_codec_write(&hdac->hdac, port->pin->nid, 0,
254                         AC_VERB_SET_DEVICE_SEL, port->id);
255 
256         if (port->id != hdac_hdmi_port_select_get(hdac, port))
257                 return -EIO;
258 
259         dev_dbg(&hdac->hdac.dev, "Selected the port=%d\n", port->id);
260 
261         return 0;
262 }
263 
264 static struct hdac_hdmi_pcm *get_hdmi_pcm_from_id(struct hdac_hdmi_priv *hdmi,
265                                                 int pcm_idx)
266 {
267         struct hdac_hdmi_pcm *pcm;
268 
269         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
270                 if (pcm->pcm_id == pcm_idx)
271                         return pcm;
272         }
273 
274         return NULL;
275 }
276 
277 static inline struct hdac_ext_device *to_hda_ext_device(struct device *dev)
278 {
279         struct hdac_device *hdac = dev_to_hdac_dev(dev);
280 
281         return to_ehdac_device(hdac);
282 }
283 
284 static unsigned int sad_format(const u8 *sad)
285 {
286         return ((sad[0] >> 0x3) & 0x1f);
287 }
288 
289 static unsigned int sad_sample_bits_lpcm(const u8 *sad)
290 {
291         return (sad[2] & 7);
292 }
293 
294 static int hdac_hdmi_eld_limit_formats(struct snd_pcm_runtime *runtime,
295                                                 void *eld)
296 {
297         u64 formats = SNDRV_PCM_FMTBIT_S16;
298         int i;
299         const u8 *sad, *eld_buf = eld;
300 
301         sad = drm_eld_sad(eld_buf);
302         if (!sad)
303                 goto format_constraint;
304 
305         for (i = drm_eld_sad_count(eld_buf); i > 0; i--, sad += 3) {
306                 if (sad_format(sad) == 1) { /* AUDIO_CODING_TYPE_LPCM */
307 
308                         /*
309                          * the controller support 20 and 24 bits in 32 bit
310                          * container so we set S32
311                          */
312                         if (sad_sample_bits_lpcm(sad) & 0x6)
313                                 formats |= SNDRV_PCM_FMTBIT_S32;
314                 }
315         }
316 
317 format_constraint:
318         return snd_pcm_hw_constraint_mask64(runtime, SNDRV_PCM_HW_PARAM_FORMAT,
319                                 formats);
320 
321 }
322 
323 static void
324 hdac_hdmi_set_dip_index(struct hdac_ext_device *hdac, hda_nid_t pin_nid,
325                                 int packet_index, int byte_index)
326 {
327         int val;
328 
329         val = (packet_index << 5) | (byte_index & 0x1f);
330 
331         snd_hdac_codec_write(&hdac->hdac, pin_nid, 0,
332                                 AC_VERB_SET_HDMI_DIP_INDEX, val);
333 }
334 
335 struct dp_audio_infoframe {
336         u8 type; /* 0x84 */
337         u8 len;  /* 0x1b */
338         u8 ver;  /* 0x11 << 2 */
339 
340         u8 CC02_CT47;   /* match with HDMI infoframe from this on */
341         u8 SS01_SF24;
342         u8 CXT04;
343         u8 CA;
344         u8 LFEPBL01_LSV36_DM_INH7;
345 };
346 
347 static int hdac_hdmi_setup_audio_infoframe(struct hdac_ext_device *hdac,
348                    struct hdac_hdmi_pcm *pcm, struct hdac_hdmi_port *port)
349 {
350         uint8_t buffer[HDMI_INFOFRAME_HEADER_SIZE + HDMI_AUDIO_INFOFRAME_SIZE];
351         struct hdmi_audio_infoframe frame;
352         struct hdac_hdmi_pin *pin = port->pin;
353         struct dp_audio_infoframe dp_ai;
354         struct hdac_hdmi_priv *hdmi = hdac->private_data;
355         struct hdac_hdmi_cvt *cvt = pcm->cvt;
356         u8 *dip;
357         int ret;
358         int i;
359         const u8 *eld_buf;
360         u8 conn_type;
361         int channels, ca;
362 
363         ca = snd_hdac_channel_allocation(&hdac->hdac, port->eld.info.spk_alloc,
364                         pcm->channels, pcm->chmap_set, true, pcm->chmap);
365 
366         channels = snd_hdac_get_active_channels(ca);
367         hdmi->chmap.ops.set_channel_count(&hdac->hdac, cvt->nid, channels);
368 
369         snd_hdac_setup_channel_mapping(&hdmi->chmap, pin->nid, false, ca,
370                                 pcm->channels, pcm->chmap, pcm->chmap_set);
371 
372         eld_buf = port->eld.eld_buffer;
373         conn_type = drm_eld_get_conn_type(eld_buf);
374 
375         switch (conn_type) {
376         case DRM_ELD_CONN_TYPE_HDMI:
377                 hdmi_audio_infoframe_init(&frame);
378 
379                 frame.channels = channels;
380                 frame.channel_allocation = ca;
381 
382                 ret = hdmi_audio_infoframe_pack(&frame, buffer, sizeof(buffer));
383                 if (ret < 0)
384                         return ret;
385 
386                 break;
387 
388         case DRM_ELD_CONN_TYPE_DP:
389                 memset(&dp_ai, 0, sizeof(dp_ai));
390                 dp_ai.type      = 0x84;
391                 dp_ai.len       = 0x1b;
392                 dp_ai.ver       = 0x11 << 2;
393                 dp_ai.CC02_CT47 = channels - 1;
394                 dp_ai.CA        = ca;
395 
396                 dip = (u8 *)&dp_ai;
397                 break;
398 
399         default:
400                 dev_err(&hdac->hdac.dev, "Invalid connection type: %d\n",
401                                                 conn_type);
402                 return -EIO;
403         }
404 
405         /* stop infoframe transmission */
406         hdac_hdmi_set_dip_index(hdac, pin->nid, 0x0, 0x0);
407         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
408                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_DISABLE);
409 
410 
411         /*  Fill infoframe. Index auto-incremented */
412         hdac_hdmi_set_dip_index(hdac, pin->nid, 0x0, 0x0);
413         if (conn_type == DRM_ELD_CONN_TYPE_HDMI) {
414                 for (i = 0; i < sizeof(buffer); i++)
415                         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
416                                 AC_VERB_SET_HDMI_DIP_DATA, buffer[i]);
417         } else {
418                 for (i = 0; i < sizeof(dp_ai); i++)
419                         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
420                                 AC_VERB_SET_HDMI_DIP_DATA, dip[i]);
421         }
422 
423         /* Start infoframe */
424         hdac_hdmi_set_dip_index(hdac, pin->nid, 0x0, 0x0);
425         snd_hdac_codec_write(&hdac->hdac, pin->nid, 0,
426                         AC_VERB_SET_HDMI_DIP_XMIT, AC_DIPXMIT_BEST);
427 
428         return 0;
429 }
430 
431 static int hdac_hdmi_set_tdm_slot(struct snd_soc_dai *dai,
432                 unsigned int tx_mask, unsigned int rx_mask,
433                 int slots, int slot_width)
434 {
435         struct hdac_ext_device *edev = snd_soc_dai_get_drvdata(dai);
436         struct hdac_hdmi_priv *hdmi = edev->private_data;
437         struct hdac_hdmi_dai_port_map *dai_map;
438         struct hdac_hdmi_pcm *pcm;
439 
440         dev_dbg(&edev->hdac.dev, "%s: strm_tag: %d\n", __func__, tx_mask);
441 
442         dai_map = &hdmi->dai_map[dai->id];
443 
444         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
445 
446         if (pcm)
447                 pcm->stream_tag = (tx_mask << 4);
448 
449         return 0;
450 }
451 
452 static int hdac_hdmi_set_hw_params(struct snd_pcm_substream *substream,
453         struct snd_pcm_hw_params *hparams, struct snd_soc_dai *dai)
454 {
455         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
456         struct hdac_hdmi_priv *hdmi = hdac->private_data;
457         struct hdac_hdmi_dai_port_map *dai_map;
458         struct hdac_hdmi_port *port;
459         struct hdac_hdmi_pcm *pcm;
460         int format;
461 
462         dai_map = &hdmi->dai_map[dai->id];
463         port = dai_map->port;
464 
465         if (!port)
466                 return -ENODEV;
467 
468         if ((!port->eld.monitor_present) || (!port->eld.eld_valid)) {
469                 dev_err(&hdac->hdac.dev,
470                         "device is not configured for this pin:port%d:%d\n",
471                                         port->pin->nid, port->id);
472                 return -ENODEV;
473         }
474 
475         format = snd_hdac_calc_stream_format(params_rate(hparams),
476                         params_channels(hparams), params_format(hparams),
477                         dai->driver->playback.sig_bits, 0);
478 
479         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
480         if (!pcm)
481                 return -EIO;
482 
483         pcm->format = format;
484         pcm->channels = params_channels(hparams);
485 
486         return 0;
487 }
488 
489 static int hdac_hdmi_query_port_connlist(struct hdac_ext_device *hdac,
490                                         struct hdac_hdmi_pin *pin,
491                                         struct hdac_hdmi_port *port)
492 {
493         if (!(get_wcaps(&hdac->hdac, pin->nid) & AC_WCAP_CONN_LIST)) {
494                 dev_warn(&hdac->hdac.dev,
495                         "HDMI: pin %d wcaps %#x does not support connection list\n",
496                         pin->nid, get_wcaps(&hdac->hdac, pin->nid));
497                 return -EINVAL;
498         }
499 
500         if (hdac_hdmi_port_select_set(hdac, port) < 0)
501                 return -EIO;
502 
503         port->num_mux_nids = snd_hdac_get_connections(&hdac->hdac, pin->nid,
504                         port->mux_nids, HDA_MAX_CONNECTIONS);
505         if (port->num_mux_nids == 0)
506                 dev_warn(&hdac->hdac.dev,
507                         "No connections found for pin:port %d:%d\n",
508                                                 pin->nid, port->id);
509 
510         dev_dbg(&hdac->hdac.dev, "num_mux_nids %d for pin:port %d:%d\n",
511                         port->num_mux_nids, pin->nid, port->id);
512 
513         return port->num_mux_nids;
514 }
515 
516 /*
517  * Query pcm list and return port to which stream is routed.
518  *
519  * Also query connection list of the pin, to validate the cvt to port map.
520  *
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
523  * connected.
524  */
525 static struct hdac_hdmi_port *hdac_hdmi_get_port_from_cvt(
526                         struct hdac_ext_device *edev,
527                         struct hdac_hdmi_priv *hdmi,
528                         struct hdac_hdmi_cvt *cvt)
529 {
530         struct hdac_hdmi_pcm *pcm;
531         struct hdac_hdmi_port *port = NULL;
532         int ret, i;
533 
534         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
535                 if (pcm->cvt == cvt) {
536                         if (list_empty(&pcm->port_list))
537                                 continue;
538 
539                         list_for_each_entry(port, &pcm->port_list, head) {
540                                 mutex_lock(&pcm->lock);
541                                 ret = hdac_hdmi_query_port_connlist(edev,
542                                                         port->pin, port);
543                                 mutex_unlock(&pcm->lock);
544                                 if (ret < 0)
545                                         continue;
546 
547                                 for (i = 0; i < port->num_mux_nids; i++) {
548                                         if (port->mux_nids[i] == cvt->nid &&
549                                                 port->eld.monitor_present &&
550                                                 port->eld.eld_valid)
551                                                 return port;
552                                 }
553                         }
554                 }
555         }
556 
557         return NULL;
558 }
559 
560 /*
561  * This tries to get a valid pin and set the HW constraints based on the
562  * ELD. Even if a valid pin is not found return success so that device open
563  * doesn't fail.
564  */
565 static int hdac_hdmi_pcm_open(struct snd_pcm_substream *substream,
566                         struct snd_soc_dai *dai)
567 {
568         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
569         struct hdac_hdmi_priv *hdmi = hdac->private_data;
570         struct hdac_hdmi_dai_port_map *dai_map;
571         struct hdac_hdmi_cvt *cvt;
572         struct hdac_hdmi_port *port;
573         int ret;
574 
575         dai_map = &hdmi->dai_map[dai->id];
576 
577         cvt = dai_map->cvt;
578         port = hdac_hdmi_get_port_from_cvt(hdac, hdmi, cvt);
579 
580         /*
581          * To make PA and other userland happy.
582          * userland scans devices so returning error does not help.
583          */
584         if (!port)
585                 return 0;
586         if ((!port->eld.monitor_present) ||
587                         (!port->eld.eld_valid)) {
588 
589                 dev_warn(&hdac->hdac.dev,
590                         "Failed: present?:%d ELD valid?:%d pin:port: %d:%d\n",
591                         port->eld.monitor_present, port->eld.eld_valid,
592                         port->pin->nid, port->id);
593 
594                 return 0;
595         }
596 
597         dai_map->port = port;
598 
599         ret = hdac_hdmi_eld_limit_formats(substream->runtime,
600                                 port->eld.eld_buffer);
601         if (ret < 0)
602                 return ret;
603 
604         return snd_pcm_hw_constraint_eld(substream->runtime,
605                                 port->eld.eld_buffer);
606 }
607 
608 static void hdac_hdmi_pcm_close(struct snd_pcm_substream *substream,
609                 struct snd_soc_dai *dai)
610 {
611         struct hdac_ext_device *hdac = snd_soc_dai_get_drvdata(dai);
612         struct hdac_hdmi_priv *hdmi = hdac->private_data;
613         struct hdac_hdmi_dai_port_map *dai_map;
614         struct hdac_hdmi_pcm *pcm;
615 
616         dai_map = &hdmi->dai_map[dai->id];
617 
618         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, dai_map->cvt);
619 
620         if (pcm) {
621                 mutex_lock(&pcm->lock);
622                 pcm->chmap_set = false;
623                 memset(pcm->chmap, 0, sizeof(pcm->chmap));
624                 pcm->channels = 0;
625                 mutex_unlock(&pcm->lock);
626         }
627 
628         if (dai_map->port)
629                 dai_map->port = NULL;
630 }
631 
632 static int
633 hdac_hdmi_query_cvt_params(struct hdac_device *hdac, struct hdac_hdmi_cvt *cvt)
634 {
635         unsigned int chans;
636         struct hdac_ext_device *edev = to_ehdac_device(hdac);
637         struct hdac_hdmi_priv *hdmi = edev->private_data;
638         int err;
639 
640         chans = get_wcaps(hdac, cvt->nid);
641         chans = get_wcaps_channels(chans);
642 
643         cvt->params.channels_min = 2;
644 
645         cvt->params.channels_max = chans;
646         if (chans > hdmi->chmap.channels_max)
647                 hdmi->chmap.channels_max = chans;
648 
649         err = snd_hdac_query_supported_pcm(hdac, cvt->nid,
650                         &cvt->params.rates,
651                         &cvt->params.formats,
652                         &cvt->params.maxbps);
653         if (err < 0)
654                 dev_err(&hdac->dev,
655                         "Failed to query pcm params for nid %d: %d\n",
656                         cvt->nid, err);
657 
658         return err;
659 }
660 
661 static int hdac_hdmi_fill_widget_info(struct device *dev,
662                 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_type id,
663                 void *priv, const char *wname, const char *stream,
664                 struct snd_kcontrol_new *wc, int numkc,
665                 int (*event)(struct snd_soc_dapm_widget *,
666                 struct snd_kcontrol *, int), unsigned short event_flags)
667 {
668         w->id = id;
669         w->name = devm_kstrdup(dev, wname, GFP_KERNEL);
670         if (!w->name)
671                 return -ENOMEM;
672 
673         w->sname = stream;
674         w->reg = SND_SOC_NOPM;
675         w->shift = 0;
676         w->kcontrol_news = wc;
677         w->num_kcontrols = numkc;
678         w->priv = priv;
679         w->event = event;
680         w->event_flags = event_flags;
681 
682         return 0;
683 }
684 
685 static void hdac_hdmi_fill_route(struct snd_soc_dapm_route *route,
686                 const char *sink, const char *control, const char *src,
687                 int (*handler)(struct snd_soc_dapm_widget *src,
688                         struct snd_soc_dapm_widget *sink))
689 {
690         route->sink = sink;
691         route->source = src;
692         route->control = control;
693         route->connected = handler;
694 }
695 
696 static struct hdac_hdmi_pcm *hdac_hdmi_get_pcm(struct hdac_ext_device *edev,
697                                         struct hdac_hdmi_port *port)
698 {
699         struct hdac_hdmi_priv *hdmi = edev->private_data;
700         struct hdac_hdmi_pcm *pcm = NULL;
701         struct hdac_hdmi_port *p;
702 
703         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
704                 if (list_empty(&pcm->port_list))
705                         continue;
706 
707                 list_for_each_entry(p, &pcm->port_list, head) {
708                         if (p->id == port->id && port->pin == p->pin)
709                                 return pcm;
710                 }
711         }
712 
713         return NULL;
714 }
715 
716 static void hdac_hdmi_set_power_state(struct hdac_ext_device *edev,
717                              hda_nid_t nid, unsigned int pwr_state)
718 {
719         if (get_wcaps(&edev->hdac, nid) & AC_WCAP_POWER) {
720                 if (!snd_hdac_check_power_state(&edev->hdac, nid, pwr_state))
721                         snd_hdac_codec_write(&edev->hdac, nid, 0,
722                                 AC_VERB_SET_POWER_STATE, pwr_state);
723         }
724 }
725 
726 static void hdac_hdmi_set_amp(struct hdac_ext_device *edev,
727                                    hda_nid_t nid, int val)
728 {
729         if (get_wcaps(&edev->hdac, nid) & AC_WCAP_OUT_AMP)
730                 snd_hdac_codec_write(&edev->hdac, nid, 0,
731                                         AC_VERB_SET_AMP_GAIN_MUTE, val);
732 }
733 
734 
735 static int hdac_hdmi_pin_output_widget_event(struct snd_soc_dapm_widget *w,
736                                         struct snd_kcontrol *kc, int event)
737 {
738         struct hdac_hdmi_port *port = w->priv;
739         struct hdac_ext_device *edev = to_hda_ext_device(w->dapm->dev);
740         struct hdac_hdmi_pcm *pcm;
741 
742         dev_dbg(&edev->hdac.dev, "%s: widget: %s event: %x\n",
743                         __func__, w->name, event);
744 
745         pcm = hdac_hdmi_get_pcm(edev, port);
746         if (!pcm)
747                 return -EIO;
748 
749         /* set the device if pin is mst_capable */
750         if (hdac_hdmi_port_select_set(edev, port) < 0)
751                 return -EIO;
752 
753         switch (event) {
754         case SND_SOC_DAPM_PRE_PMU:
755                 hdac_hdmi_set_power_state(edev, port->pin->nid, AC_PWRST_D0);
756 
757                 /* Enable out path for this pin widget */
758                 snd_hdac_codec_write(&edev->hdac, port->pin->nid, 0,
759                                 AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_OUT);
760 
761                 hdac_hdmi_set_amp(edev, port->pin->nid, AMP_OUT_UNMUTE);
762 
763                 return hdac_hdmi_setup_audio_infoframe(edev, pcm, port);
764 
765         case SND_SOC_DAPM_POST_PMD:
766                 hdac_hdmi_set_amp(edev, port->pin->nid, AMP_OUT_MUTE);
767 
768                 /* Disable out path for this pin widget */
769                 snd_hdac_codec_write(&edev->hdac, port->pin->nid, 0,
770                                 AC_VERB_SET_PIN_WIDGET_CONTROL, 0);
771 
772                 hdac_hdmi_set_power_state(edev, port->pin->nid, AC_PWRST_D3);
773                 break;
774 
775         }
776 
777         return 0;
778 }
779 
780 static int hdac_hdmi_cvt_output_widget_event(struct snd_soc_dapm_widget *w,
781                                         struct snd_kcontrol *kc, int event)
782 {
783         struct hdac_hdmi_cvt *cvt = w->priv;
784         struct hdac_ext_device *edev = to_hda_ext_device(w->dapm->dev);
785         struct hdac_hdmi_priv *hdmi = edev->private_data;
786         struct hdac_hdmi_pcm *pcm;
787 
788         dev_dbg(&edev->hdac.dev, "%s: widget: %s event: %x\n",
789                         __func__, w->name, event);
790 
791         pcm = hdac_hdmi_get_pcm_from_cvt(hdmi, cvt);
792         if (!pcm)
793                 return -EIO;
794 
795         switch (event) {
796         case SND_SOC_DAPM_PRE_PMU:
797                 hdac_hdmi_set_power_state(edev, cvt->nid, AC_PWRST_D0);
798 
799                 /* Enable transmission */
800                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
801                         AC_VERB_SET_DIGI_CONVERT_1, 1);
802 
803                 /* Category Code (CC) to zero */
804                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
805                         AC_VERB_SET_DIGI_CONVERT_2, 0);
806 
807                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
808                                 AC_VERB_SET_CHANNEL_STREAMID, pcm->stream_tag);
809                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
810                                 AC_VERB_SET_STREAM_FORMAT, pcm->format);
811                 break;
812 
813         case SND_SOC_DAPM_POST_PMD:
814                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
815                                 AC_VERB_SET_CHANNEL_STREAMID, 0);
816                 snd_hdac_codec_write(&edev->hdac, cvt->nid, 0,
817                                 AC_VERB_SET_STREAM_FORMAT, 0);
818 
819                 hdac_hdmi_set_power_state(edev, cvt->nid, AC_PWRST_D3);
820                 break;
821 
822         }
823 
824         return 0;
825 }
826 
827 static int hdac_hdmi_pin_mux_widget_event(struct snd_soc_dapm_widget *w,
828                                         struct snd_kcontrol *kc, int event)
829 {
830         struct hdac_hdmi_port *port = w->priv;
831         struct hdac_ext_device *edev = to_hda_ext_device(w->dapm->dev);
832         int mux_idx;
833 
834         dev_dbg(&edev->hdac.dev, "%s: widget: %s event: %x\n",
835                         __func__, w->name, event);
836 
837         if (!kc)
838                 kc  = w->kcontrols[0];
839 
840         mux_idx = dapm_kcontrol_get_value(kc);
841 
842         /* set the device if pin is mst_capable */
843         if (hdac_hdmi_port_select_set(edev, port) < 0)
844                 return -EIO;
845 
846         if (mux_idx > 0) {
847                 snd_hdac_codec_write(&edev->hdac, port->pin->nid, 0,
848                         AC_VERB_SET_CONNECT_SEL, (mux_idx - 1));
849         }
850 
851         return 0;
852 }
853 
854 /*
855  * Based on user selection, map the PINs with the PCMs.
856  */
857 static int hdac_hdmi_set_pin_port_mux(struct snd_kcontrol *kcontrol,
858                 struct snd_ctl_elem_value *ucontrol)
859 {
860         int ret;
861         struct hdac_hdmi_port *p, *p_next;
862         struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
863         struct snd_soc_dapm_widget *w = snd_soc_dapm_kcontrol_widget(kcontrol);
864         struct snd_soc_dapm_context *dapm = w->dapm;
865         struct hdac_hdmi_port *port = w->priv;
866         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
867         struct hdac_hdmi_priv *hdmi = edev->private_data;
868         struct hdac_hdmi_pcm *pcm = NULL;
869         const char *cvt_name =  e->texts[ucontrol->value.enumerated.item[0]];
870 
871         ret = snd_soc_dapm_put_enum_double(kcontrol, ucontrol);
872         if (ret < 0)
873                 return ret;
874 
875         if (port == NULL)
876                 return -EINVAL;
877 
878         mutex_lock(&hdmi->pin_mutex);
879         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
880                 if (list_empty(&pcm->port_list))
881                         continue;
882 
883                 list_for_each_entry_safe(p, p_next, &pcm->port_list, head) {
884                         if (p == port && p->id == port->id &&
885                                         p->pin == port->pin) {
886                                 hdac_hdmi_jack_report(pcm, port, false);
887                                 list_del(&p->head);
888                         }
889                 }
890         }
891 
892         /*
893          * Jack status is not reported during device probe as the
894          * PCMs are not registered by then. So report it here.
895          */
896         list_for_each_entry(pcm, &hdmi->pcm_list, head) {
897                 if (!strcmp(cvt_name, pcm->cvt->name)) {
898                         list_add_tail(&port->head, &pcm->port_list);
899                         if (port->eld.monitor_present && port->eld.eld_valid) {
900                                 hdac_hdmi_jack_report(pcm, port, true);
901                                 mutex_unlock(&hdmi->pin_mutex);
902                                 return ret;
903                         }
904                 }
905         }
906         mutex_unlock(&hdmi->pin_mutex);
907 
908         return ret;
909 }
910 
911 /*
912  * Ideally the Mux inputs should be based on the num_muxs enumerated, but
913  * the display driver seem to be programming the connection list for the pin
914  * widget runtime.
915  *
916  * So programming all the possible inputs for the mux, the user has to take
917  * care of selecting the right one and leaving all other inputs selected to
918  * "NONE"
919  */
920 static int hdac_hdmi_create_pin_port_muxs(struct hdac_ext_device *edev,
921                                 struct hdac_hdmi_port *port,
922                                 struct snd_soc_dapm_widget *widget,
923                                 const char *widget_name)
924 {
925         struct hdac_hdmi_priv *hdmi = edev->private_data;
926         struct hdac_hdmi_pin *pin = port->pin;
927         struct snd_kcontrol_new *kc;
928         struct hdac_hdmi_cvt *cvt;
929         struct soc_enum *se;
930         char kc_name[NAME_SIZE];
931         char mux_items[NAME_SIZE];
932         /* To hold inputs to the Pin mux */
933         char *items[HDA_MAX_CONNECTIONS];
934         int i = 0;
935         int num_items = hdmi->num_cvt + 1;
936 
937         kc = devm_kzalloc(&edev->hdac.dev, sizeof(*kc), GFP_KERNEL);
938         if (!kc)
939                 return -ENOMEM;
940 
941         se = devm_kzalloc(&edev->hdac.dev, sizeof(*se), GFP_KERNEL);
942         if (!se)
943                 return -ENOMEM;
944 
945         snprintf(kc_name, NAME_SIZE, "Pin %d port %d Input",
946                                                 pin->nid, port->id);
947         kc->name = devm_kstrdup(&edev->hdac.dev, kc_name, GFP_KERNEL);
948         if (!kc->name)
949                 return -ENOMEM;
950 
951         kc->private_value = (long)se;
952         kc->iface = SNDRV_CTL_ELEM_IFACE_MIXER;
953         kc->access = 0;
954         kc->info = snd_soc_info_enum_double;
955         kc->put = hdac_hdmi_set_pin_port_mux;
956         kc->get = snd_soc_dapm_get_enum_double;
957 
958         se->reg = SND_SOC_NOPM;
959 
960         /* enum texts: ["NONE", "cvt #", "cvt #", ...] */
961         se->items = num_items;
962         se->mask = roundup_pow_of_two(se->items) - 1;
963 
964         sprintf(mux_items, "NONE");
965         items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
966         if (!items[i])
967                 return -ENOMEM;
968 
969         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
970                 i++;
971                 sprintf(mux_items, "cvt %d", cvt->nid);
972                 items[i] = devm_kstrdup(&edev->hdac.dev, mux_items, GFP_KERNEL);
973                 if (!items[i])
974                         return -ENOMEM;
975         }
976 
977         se->texts = devm_kmemdup(&edev->hdac.dev, items,
978                         (num_items  * sizeof(char *)), GFP_KERNEL);
979         if (!se->texts)
980                 return -ENOMEM;
981 
982         return hdac_hdmi_fill_widget_info(&edev->hdac.dev, widget,
983                         snd_soc_dapm_mux, port, widget_name, NULL, kc, 1,
984                         hdac_hdmi_pin_mux_widget_event,
985                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_REG);
986 }
987 
988 /* Add cvt <- input <- mux route map */
989 static void hdac_hdmi_add_pinmux_cvt_route(struct hdac_ext_device *edev,
990                         struct snd_soc_dapm_widget *widgets,
991                         struct snd_soc_dapm_route *route, int rindex)
992 {
993         struct hdac_hdmi_priv *hdmi = edev->private_data;
994         const struct snd_kcontrol_new *kc;
995         struct soc_enum *se;
996         int mux_index = hdmi->num_cvt + hdmi->num_ports;
997         int i, j;
998 
999         for (i = 0; i < hdmi->num_ports; i++) {
1000                 kc = widgets[mux_index].kcontrol_news;
1001                 se = (struct soc_enum *)kc->private_value;
1002                 for (j = 0; j < hdmi->num_cvt; j++) {
1003                         hdac_hdmi_fill_route(&route[rindex],
1004                                         widgets[mux_index].name,
1005                                         se->texts[j + 1],
1006                                         widgets[j].name, NULL);
1007 
1008                         rindex++;
1009                 }
1010 
1011                 mux_index++;
1012         }
1013 }
1014 
1015 /*
1016  * Widgets are added in the below sequence
1017  *      Converter widgets for num converters enumerated
1018  *      Pin-port widgets for num ports for Pins enumerated
1019  *      Pin-port mux widgets to represent connenction list of pin widget
1020  *
1021  * For each port, one Mux and One output widget is added
1022  * Total widgets elements = num_cvt + (num_ports * 2);
1023  *
1024  * Routes are added as below:
1025  *      pin-port mux -> pin (based on num_ports)
1026  *      cvt -> "Input sel control" -> pin-port_mux
1027  *
1028  * Total route elements:
1029  *      num_ports + (pin_muxes * num_cvt)
1030  */
1031 static int create_fill_widget_route_map(struct snd_soc_dapm_context *dapm)
1032 {
1033         struct snd_soc_dapm_widget *widgets;
1034         struct snd_soc_dapm_route *route;
1035         struct hdac_ext_device *edev = to_hda_ext_device(dapm->dev);
1036         struct hdac_hdmi_priv *hdmi = edev->private_data;
1037         struct snd_soc_dai_driver *dai_drv = dapm->component->dai_drv;
1038         char widget_name[NAME_SIZE];
1039         struct hdac_hdmi_cvt *cvt;
1040         struct hdac_hdmi_pin *pin;
1041         int ret, i = 0, num_routes = 0, j;
1042 
1043         if (list_empty(&hdmi->cvt_list) || list_empty(&hdmi->pin_list))
1044                 return -EINVAL;
1045 
1046         widgets = devm_kzalloc(dapm->dev, (sizeof(*widgets) *
1047                                 ((2 * hdmi->num_ports) + hdmi->num_cvt)),
1048                                 GFP_KERNEL);
1049 
1050         if (!widgets)
1051                 return -ENOMEM;
1052 
1053         /* DAPM widgets to represent each converter widget */
1054         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1055                 sprintf(widget_name, "Converter %d", cvt->nid);
1056                 ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1057                         snd_soc_dapm_aif_in, cvt,
1058                         widget_name, dai_drv[i].playback.stream_name, NULL, 0,
1059                         hdac_hdmi_cvt_output_widget_event,
1060                         SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD);
1061                 if (ret < 0)
1062                         return ret;
1063                 i++;
1064         }
1065 
1066         list_for_each_entry(pin, &hdmi->pin_list, head) {
1067                 for (j = 0; j < pin->num_ports; j++) {
1068                         sprintf(widget_name, "hif%d-%d Output",
1069                                 pin->nid, pin->ports[j].id);
1070                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1071                                         snd_soc_dapm_output, &pin->ports[j],
1072                                         widget_name, NULL, NULL, 0,
1073                                         hdac_hdmi_pin_output_widget_event,
1074                                         SND_SOC_DAPM_PRE_PMU |
1075                                         SND_SOC_DAPM_POST_PMD);
1076                         if (ret < 0)
1077                                 return ret;
1078                         pin->ports[j].output_pin = widgets[i].name;
1079                         i++;
1080                 }
1081         }
1082 
1083         /* DAPM widgets to represent the connection list to pin widget */
1084         list_for_each_entry(pin, &hdmi->pin_list, head) {
1085                 for (j = 0; j < pin->num_ports; j++) {
1086                         sprintf(widget_name, "Pin%d-Port%d Mux",
1087                                 pin->nid, pin->ports[j].id);
1088                         ret = hdac_hdmi_create_pin_port_muxs(edev,
1089                                                 &pin->ports[j], &widgets[i],
1090                                                 widget_name);
1091                         if (ret < 0)
1092                                 return ret;
1093                         i++;
1094 
1095                         /* For cvt to pin_mux mapping */
1096                         num_routes += hdmi->num_cvt;
1097 
1098                         /* For pin_mux to pin mapping */
1099                         num_routes++;
1100                 }
1101         }
1102 
1103         route = devm_kzalloc(dapm->dev, (sizeof(*route) * num_routes),
1104                                                         GFP_KERNEL);
1105         if (!route)
1106                 return -ENOMEM;
1107 
1108         i = 0;
1109         /* Add pin <- NULL <- mux route map */
1110         list_for_each_entry(pin, &hdmi->pin_list, head) {
1111                 for (j = 0; j < pin->num_ports; j++) {
1112                         int sink_index = i + hdmi->num_cvt;
1113                         int src_index = sink_index + pin->num_ports *
1114                                                 hdmi->num_pin;
1115 
1116                         hdac_hdmi_fill_route(&route[i],
1117                                 widgets[sink_index].name, NULL,
1118                                 widgets[src_index].name, NULL);
1119                         i++;
1120                 }
1121         }
1122 
1123         hdac_hdmi_add_pinmux_cvt_route(edev, widgets, route, i);
1124 
1125         snd_soc_dapm_new_controls(dapm, widgets,
1126                 ((2 * hdmi->num_ports) + hdmi->num_cvt));
1127 
1128         snd_soc_dapm_add_routes(dapm, route, num_routes);
1129         snd_soc_dapm_new_widgets(dapm->card);
1130 
1131         return 0;
1132 
1133 }
1134 
1135 static int hdac_hdmi_init_dai_map(struct hdac_ext_device *edev)
1136 {
1137         struct hdac_hdmi_priv *hdmi = edev->private_data;
1138         struct hdac_hdmi_dai_port_map *dai_map;
1139         struct hdac_hdmi_cvt *cvt;
1140         int dai_id = 0;
1141 
1142         if (list_empty(&hdmi->cvt_list))
1143                 return -EINVAL;
1144 
1145         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1146                 dai_map = &hdmi->dai_map[dai_id];
1147                 dai_map->dai_id = dai_id;
1148                 dai_map->cvt = cvt;
1149 
1150                 dai_id++;
1151 
1152                 if (dai_id == HDA_MAX_CVTS) {
1153                         dev_warn(&edev->hdac.dev,
1154                                 "Max dais supported: %d\n", dai_id);
1155                         break;
1156                 }
1157         }
1158 
1159         return 0;
1160 }
1161 
1162 static int hdac_hdmi_add_cvt(struct hdac_ext_device *edev, hda_nid_t nid)
1163 {
1164         struct hdac_hdmi_priv *hdmi = edev->private_data;
1165         struct hdac_hdmi_cvt *cvt;
1166         char name[NAME_SIZE];
1167 
1168         cvt = kzalloc(sizeof(*cvt), GFP_KERNEL);
1169         if (!cvt)
1170                 return -ENOMEM;
1171 
1172         cvt->nid = nid;
1173         sprintf(name, "cvt %d", cvt->nid);
1174         cvt->name = kstrdup(name, GFP_KERNEL);
1175 
1176         list_add_tail(&cvt->head, &hdmi->cvt_list);
1177         hdmi->num_cvt++;
1178 
1179         return hdac_hdmi_query_cvt_params(&edev->hdac, cvt);
1180 }
1181 
1182 static int hdac_hdmi_parse_eld(struct hdac_ext_device *edev,
1183                         struct hdac_hdmi_port *port)
1184 {
1185         unsigned int ver, mnl;
1186 
1187         ver = (port->eld.eld_buffer[DRM_ELD_VER] & DRM_ELD_VER_MASK)
1188                                                 >> DRM_ELD_VER_SHIFT;
1189 
1190         if (ver != ELD_VER_CEA_861D && ver != ELD_VER_PARTIAL) {
1191                 dev_err(&edev->hdac.dev, "HDMI: Unknown ELD version %d\n", ver);
1192                 return -EINVAL;
1193         }
1194 
1195         mnl = (port->eld.eld_buffer[DRM_ELD_CEA_EDID_VER_MNL] &
1196                 DRM_ELD_MNL_MASK) >> DRM_ELD_MNL_SHIFT;
1197 
1198         if (mnl > ELD_MAX_MNL) {
1199                 dev_err(&edev->hdac.dev, "HDMI: MNL Invalid %d\n", mnl);
1200                 return -EINVAL;
1201         }
1202 
1203         port->eld.info.spk_alloc = port->eld.eld_buffer[DRM_ELD_SPEAKER];
1204 
1205         return 0;
1206 }
1207 
1208 static void hdac_hdmi_present_sense(struct hdac_hdmi_pin *pin,
1209                                     struct hdac_hdmi_port *port)
1210 {
1211         struct hdac_ext_device *edev = pin->edev;
1212         struct hdac_hdmi_priv *hdmi = edev->private_data;
1213         struct hdac_hdmi_pcm *pcm;
1214         int size = 0;
1215         int port_id = -1;
1216 
1217         if (!hdmi)
1218                 return;
1219 
1220         /*
1221          * In case of non MST pin, get_eld info API expectes port
1222          * to be -1.
1223          */
1224         mutex_lock(&hdmi->pin_mutex);
1225         port->eld.monitor_present = false;
1226 
1227         if (pin->mst_capable)
1228                 port_id = port->id;
1229 
1230         size = snd_hdac_acomp_get_eld(&edev->hdac, pin->nid, port_id,
1231                                 &port->eld.monitor_present,
1232                                 port->eld.eld_buffer,
1233                                 ELD_MAX_SIZE);
1234 
1235         if (size > 0) {
1236                 size = min(size, ELD_MAX_SIZE);
1237                 if (hdac_hdmi_parse_eld(edev, port) < 0)
1238                         size = -EINVAL;
1239         }
1240 
1241         if (size > 0) {
1242                 port->eld.eld_valid = true;
1243                 port->eld.eld_size = size;
1244         } else {
1245                 port->eld.eld_valid = false;
1246                 port->eld.eld_size = 0;
1247         }
1248 
1249         pcm = hdac_hdmi_get_pcm(edev, port);
1250 
1251         if (!port->eld.monitor_present || !port->eld.eld_valid) {
1252 
1253                 dev_err(&edev->hdac.dev, "%s: disconnect for pin:port %d:%d\n",
1254                                                 __func__, pin->nid, port->id);
1255 
1256                 /*
1257                  * PCMs are not registered during device probe, so don't
1258                  * report jack here. It will be done in usermode mux
1259                  * control select.
1260                  */
1261                 if (pcm)
1262                         hdac_hdmi_jack_report(pcm, port, false);
1263 
1264                 mutex_unlock(&hdmi->pin_mutex);
1265                 return;
1266         }
1267 
1268         if (port->eld.monitor_present && port->eld.eld_valid) {
1269                 if (pcm)
1270                         hdac_hdmi_jack_report(pcm, port, true);
1271 
1272                 print_hex_dump_debug("ELD: ", DUMP_PREFIX_OFFSET, 16, 1,
1273                           port->eld.eld_buffer, port->eld.eld_size, false);
1274 
1275         }
1276         mutex_unlock(&hdmi->pin_mutex);
1277 }
1278 
1279 static int hdac_hdmi_add_ports(struct hdac_hdmi_priv *hdmi,
1280                                 struct hdac_hdmi_pin *pin)
1281 {
1282         struct hdac_hdmi_port *ports;
1283         int max_ports = HDA_MAX_PORTS;
1284         int i;
1285 
1286         /*
1287          * FIXME: max_port may vary for each platform, so pass this as
1288          * as driver data or query from i915 interface when this API is
1289          * implemented.
1290          */
1291 
1292         ports = kcalloc(max_ports, sizeof(*ports), GFP_KERNEL);
1293         if (!ports)
1294                 return -ENOMEM;
1295 
1296         for (i = 0; i < max_ports; i++) {
1297                 ports[i].id = i;
1298                 ports[i].pin = pin;
1299         }
1300         pin->ports = ports;
1301         pin->num_ports = max_ports;
1302         return 0;
1303 }
1304 
1305 static int hdac_hdmi_add_pin(struct hdac_ext_device *edev, hda_nid_t nid)
1306 {
1307         struct hdac_hdmi_priv *hdmi = edev->private_data;
1308         struct hdac_hdmi_pin *pin;
1309         int ret;
1310 
1311         pin = kzalloc(sizeof(*pin), GFP_KERNEL);
1312         if (!pin)
1313                 return -ENOMEM;
1314 
1315         pin->nid = nid;
1316         pin->mst_capable = false;
1317         pin->edev = edev;
1318         ret = hdac_hdmi_add_ports(hdmi, pin);
1319         if (ret < 0)
1320                 return ret;
1321 
1322         list_add_tail(&pin->head, &hdmi->pin_list);
1323         hdmi->num_pin++;
1324         hdmi->num_ports += pin->num_ports;
1325 
1326         return 0;
1327 }
1328 
1329 #define INTEL_VENDOR_NID 0x08
1330 #define INTEL_GLK_VENDOR_NID 0x0b
1331 #define INTEL_GET_VENDOR_VERB 0xf81
1332 #define INTEL_SET_VENDOR_VERB 0x781
1333 #define INTEL_EN_DP12                   0x02 /* enable DP 1.2 features */
1334 #define INTEL_EN_ALL_PIN_CVTS   0x01 /* enable 2nd & 3rd pins and convertors */
1335 
1336 static void hdac_hdmi_skl_enable_all_pins(struct hdac_device *hdac)
1337 {
1338         unsigned int vendor_param;
1339         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1340         struct hdac_hdmi_priv *hdmi = edev->private_data;
1341         unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1342 
1343         vendor_param = snd_hdac_codec_read(hdac, vendor_nid, 0,
1344                                 INTEL_GET_VENDOR_VERB, 0);
1345         if (vendor_param == -1 || vendor_param & INTEL_EN_ALL_PIN_CVTS)
1346                 return;
1347 
1348         vendor_param |= INTEL_EN_ALL_PIN_CVTS;
1349         vendor_param = snd_hdac_codec_read(hdac, vendor_nid, 0,
1350                                 INTEL_SET_VENDOR_VERB, vendor_param);
1351         if (vendor_param == -1)
1352                 return;
1353 }
1354 
1355 static void hdac_hdmi_skl_enable_dp12(struct hdac_device *hdac)
1356 {
1357         unsigned int vendor_param;
1358         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1359         struct hdac_hdmi_priv *hdmi = edev->private_data;
1360         unsigned int vendor_nid = hdmi->drv_data->vendor_nid;
1361 
1362         vendor_param = snd_hdac_codec_read(hdac, vendor_nid, 0,
1363                                 INTEL_GET_VENDOR_VERB, 0);
1364         if (vendor_param == -1 || vendor_param & INTEL_EN_DP12)
1365                 return;
1366 
1367         /* enable DP1.2 mode */
1368         vendor_param |= INTEL_EN_DP12;
1369         vendor_param = snd_hdac_codec_read(hdac, vendor_nid, 0,
1370                                 INTEL_SET_VENDOR_VERB, vendor_param);
1371         if (vendor_param == -1)
1372                 return;
1373 
1374 }
1375 
1376 static const struct snd_soc_dai_ops hdmi_dai_ops = {
1377         .startup = hdac_hdmi_pcm_open,
1378         .shutdown = hdac_hdmi_pcm_close,
1379         .hw_params = hdac_hdmi_set_hw_params,
1380         .set_tdm_slot = hdac_hdmi_set_tdm_slot,
1381 };
1382 
1383 /*
1384  * Each converter can support a stream independently. So a dai is created
1385  * based on the number of converter queried.
1386  */
1387 static int hdac_hdmi_create_dais(struct hdac_device *hdac,
1388                 struct snd_soc_dai_driver **dais,
1389                 struct hdac_hdmi_priv *hdmi, int num_dais)
1390 {
1391         struct snd_soc_dai_driver *hdmi_dais;
1392         struct hdac_hdmi_cvt *cvt;
1393         char name[NAME_SIZE], dai_name[NAME_SIZE];
1394         int i = 0;
1395         u32 rates, bps;
1396         unsigned int rate_max = 384000, rate_min = 8000;
1397         u64 formats;
1398         int ret;
1399 
1400         hdmi_dais = devm_kzalloc(&hdac->dev,
1401                         (sizeof(*hdmi_dais) * num_dais),
1402                         GFP_KERNEL);
1403         if (!hdmi_dais)
1404                 return -ENOMEM;
1405 
1406         list_for_each_entry(cvt, &hdmi->cvt_list, head) {
1407                 ret = snd_hdac_query_supported_pcm(hdac, cvt->nid,
1408                                         &rates, &formats, &bps);
1409                 if (ret)
1410                         return ret;
1411 
1412                 sprintf(dai_name, "intel-hdmi-hifi%d", i+1);
1413                 hdmi_dais[i].name = devm_kstrdup(&hdac->dev,
1414                                         dai_name, GFP_KERNEL);
1415 
1416                 if (!hdmi_dais[i].name)
1417                         return -ENOMEM;
1418 
1419                 snprintf(name, sizeof(name), "hifi%d", i+1);
1420                 hdmi_dais[i].playback.stream_name =
1421                                 devm_kstrdup(&hdac->dev, name, GFP_KERNEL);
1422                 if (!hdmi_dais[i].playback.stream_name)
1423                         return -ENOMEM;
1424 
1425                 /*
1426                  * Set caps based on capability queried from the converter.
1427                  * It will be constrained runtime based on ELD queried.
1428                  */
1429                 hdmi_dais[i].playback.formats = formats;
1430                 hdmi_dais[i].playback.rates = rates;
1431                 hdmi_dais[i].playback.rate_max = rate_max;
1432                 hdmi_dais[i].playback.rate_min = rate_min;
1433                 hdmi_dais[i].playback.channels_min = 2;
1434                 hdmi_dais[i].playback.channels_max = 2;
1435                 hdmi_dais[i].playback.sig_bits = bps;
1436                 hdmi_dais[i].ops = &hdmi_dai_ops;
1437                 i++;
1438         }
1439 
1440         *dais = hdmi_dais;
1441 
1442         return 0;
1443 }
1444 
1445 /*
1446  * Parse all nodes and store the cvt/pin nids in array
1447  * Add one time initialization for pin and cvt widgets
1448  */
1449 static int hdac_hdmi_parse_and_map_nid(struct hdac_ext_device *edev,
1450                 struct snd_soc_dai_driver **dais, int *num_dais)
1451 {
1452         hda_nid_t nid;
1453         int i, num_nodes;
1454         struct hdac_device *hdac = &edev->hdac;
1455         struct hdac_hdmi_priv *hdmi = edev->private_data;
1456         struct hdac_hdmi_cvt *temp_cvt, *cvt_next;
1457         struct hdac_hdmi_pin *temp_pin, *pin_next;
1458         int ret;
1459 
1460         hdac_hdmi_skl_enable_all_pins(hdac);
1461         hdac_hdmi_skl_enable_dp12(hdac);
1462 
1463         num_nodes = snd_hdac_get_sub_nodes(hdac, hdac->afg, &nid);
1464         if (!nid || num_nodes <= 0) {
1465                 dev_warn(&hdac->dev, "HDMI: failed to get afg sub nodes\n");
1466                 return -EINVAL;
1467         }
1468 
1469         hdac->num_nodes = num_nodes;
1470         hdac->start_nid = nid;
1471 
1472         for (i = 0; i < hdac->num_nodes; i++, nid++) {
1473                 unsigned int caps;
1474                 unsigned int type;
1475 
1476                 caps = get_wcaps(hdac, nid);
1477                 type = get_wcaps_type(caps);
1478 
1479                 if (!(caps & AC_WCAP_DIGITAL))
1480                         continue;
1481 
1482                 switch (type) {
1483 
1484                 case AC_WID_AUD_OUT:
1485                         ret = hdac_hdmi_add_cvt(edev, nid);
1486                         if (ret < 0)
1487                                 goto free_widgets;
1488                         break;
1489 
1490                 case AC_WID_PIN:
1491                         ret = hdac_hdmi_add_pin(edev, nid);
1492                         if (ret < 0)
1493                                 goto free_widgets;
1494                         break;
1495                 }
1496         }
1497 
1498         hdac->end_nid = nid;
1499 
1500         if (!hdmi->num_pin || !hdmi->num_cvt) {
1501                 ret = -EIO;
1502                 goto free_widgets;
1503         }
1504 
1505         ret = hdac_hdmi_create_dais(hdac, dais, hdmi, hdmi->num_cvt);
1506         if (ret) {
1507                 dev_err(&hdac->dev, "Failed to create dais with err: %d\n",
1508                                                         ret);
1509                 goto free_widgets;
1510         }
1511 
1512         *num_dais = hdmi->num_cvt;
1513         ret = hdac_hdmi_init_dai_map(edev);
1514         if (ret < 0)
1515                 goto free_widgets;
1516 
1517         return ret;
1518 
1519 free_widgets:
1520         list_for_each_entry_safe(temp_cvt, cvt_next, &hdmi->cvt_list, head) {
1521                 list_del(&temp_cvt->head);
1522                 kfree(temp_cvt->name);
1523                 kfree(temp_cvt);
1524         }
1525 
1526         list_for_each_entry_safe(temp_pin, pin_next, &hdmi->pin_list, head) {
1527                 for (i = 0; i < temp_pin->num_ports; i++)
1528                         temp_pin->ports[i].pin = NULL;
1529                 kfree(temp_pin->ports);
1530                 list_del(&temp_pin->head);
1531                 kfree(temp_pin);
1532         }
1533 
1534         return ret;
1535 }
1536 
1537 static void hdac_hdmi_eld_notify_cb(void *aptr, int port, int pipe)
1538 {
1539         struct hdac_ext_device *edev = aptr;
1540         struct hdac_hdmi_priv *hdmi = edev->private_data;
1541         struct hdac_hdmi_pin *pin = NULL;
1542         struct hdac_hdmi_port *hport = NULL;
1543         struct snd_soc_codec *codec = edev->scodec;
1544         int i;
1545 
1546         /* Don't know how this mapping is derived */
1547         hda_nid_t pin_nid = port + 0x04;
1548 
1549         dev_dbg(&edev->hdac.dev, "%s: for pin:%d port=%d\n", __func__,
1550                                                         pin_nid, pipe);
1551 
1552         /*
1553          * skip notification during system suspend (but not in runtime PM);
1554          * the state will be updated at resume. Also since the ELD and
1555          * connection states are updated in anyway at the end of the resume,
1556          * we can skip it when received during PM process.
1557          */
1558         if (snd_power_get_state(codec->component.card->snd_card) !=
1559                         SNDRV_CTL_POWER_D0)
1560                 return;
1561 
1562         if (atomic_read(&edev->hdac.in_pm))
1563                 return;
1564 
1565         list_for_each_entry(pin, &hdmi->pin_list, head) {
1566                 if (pin->nid != pin_nid)
1567                         continue;
1568 
1569                 /* In case of non MST pin, pipe is -1 */
1570                 if (pipe == -1) {
1571                         pin->mst_capable = false;
1572                         /* if not MST, default is port[0] */
1573                         hport = &pin->ports[0];
1574                 } else {
1575                         for (i = 0; i < pin->num_ports; i++) {
1576                                 pin->mst_capable = true;
1577                                 if (pin->ports[i].id == pipe) {
1578                                         hport = &pin->ports[i];
1579                                         break;
1580                                 }
1581                         }
1582                 }
1583 
1584                 if (hport)
1585                         hdac_hdmi_present_sense(pin, hport);
1586         }
1587 
1588 }
1589 
1590 static struct i915_audio_component_audio_ops aops = {
1591         .pin_eld_notify = hdac_hdmi_eld_notify_cb,
1592 };
1593 
1594 static struct snd_pcm *hdac_hdmi_get_pcm_from_id(struct snd_soc_card *card,
1595                                                 int device)
1596 {
1597         struct snd_soc_pcm_runtime *rtd;
1598 
1599         list_for_each_entry(rtd, &card->rtd_list, list) {
1600                 if (rtd->pcm && (rtd->pcm->device == device))
1601                         return rtd->pcm;
1602         }
1603 
1604         return NULL;
1605 }
1606 
1607 /* create jack pin kcontrols */
1608 static int create_fill_jack_kcontrols(struct snd_soc_card *card,
1609                                     struct hdac_ext_device *edev)
1610 {
1611         struct hdac_hdmi_pin *pin;
1612         struct snd_kcontrol_new *kc;
1613         char kc_name[NAME_SIZE], xname[NAME_SIZE];
1614         char *name;
1615         int i = 0, j;
1616         struct snd_soc_codec *codec = edev->scodec;
1617         struct hdac_hdmi_priv *hdmi = edev->private_data;
1618 
1619         kc = devm_kcalloc(codec->dev, hdmi->num_ports,
1620                                 sizeof(*kc), GFP_KERNEL);
1621 
1622         if (!kc)
1623                 return -ENOMEM;
1624 
1625         list_for_each_entry(pin, &hdmi->pin_list, head) {
1626                 for (j = 0; j < pin->num_ports; j++) {
1627                         snprintf(xname, sizeof(xname), "hif%d-%d Jack",
1628                                                 pin->nid, pin->ports[j].id);
1629                         name = devm_kstrdup(codec->dev, xname, GFP_KERNEL);
1630                         if (!name)
1631                                 return -ENOMEM;
1632                         snprintf(kc_name, sizeof(kc_name), "%s Switch", xname);
1633                         kc[i].name = devm_kstrdup(codec->dev, kc_name,
1634                                                         GFP_KERNEL);
1635                         if (!kc[i].name)
1636                                 return -ENOMEM;
1637 
1638                         kc[i].private_value = (unsigned long)name;
1639                         kc[i].iface = SNDRV_CTL_ELEM_IFACE_MIXER;
1640                         kc[i].access = 0;
1641                         kc[i].info = snd_soc_dapm_info_pin_switch;
1642                         kc[i].put = snd_soc_dapm_put_pin_switch;
1643                         kc[i].get = snd_soc_dapm_get_pin_switch;
1644                         i++;
1645                 }
1646         }
1647 
1648         return snd_soc_add_card_controls(card, kc, i);
1649 }
1650 
1651 int hdac_hdmi_jack_port_init(struct snd_soc_codec *codec,
1652                         struct snd_soc_dapm_context *dapm)
1653 {
1654         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1655         struct hdac_hdmi_priv *hdmi = edev->private_data;
1656         struct hdac_hdmi_pin *pin;
1657         struct snd_soc_dapm_widget *widgets;
1658         struct snd_soc_dapm_route *route;
1659         char w_name[NAME_SIZE];
1660         int i = 0, j, ret;
1661 
1662         widgets = devm_kcalloc(dapm->dev, hdmi->num_ports,
1663                                 sizeof(*widgets), GFP_KERNEL);
1664 
1665         if (!widgets)
1666                 return -ENOMEM;
1667 
1668         route = devm_kcalloc(dapm->dev, hdmi->num_ports,
1669                                 sizeof(*route), GFP_KERNEL);
1670         if (!route)
1671                 return -ENOMEM;
1672 
1673         /* create Jack DAPM widget */
1674         list_for_each_entry(pin, &hdmi->pin_list, head) {
1675                 for (j = 0; j < pin->num_ports; j++) {
1676                         snprintf(w_name, sizeof(w_name), "hif%d-%d Jack",
1677                                                 pin->nid, pin->ports[j].id);
1678 
1679                         ret = hdac_hdmi_fill_widget_info(dapm->dev, &widgets[i],
1680                                         snd_soc_dapm_spk, NULL,
1681                                         w_name, NULL, NULL, 0, NULL, 0);
1682                         if (ret < 0)
1683                                 return ret;
1684 
1685                         pin->ports[j].jack_pin = widgets[i].name;
1686                         pin->ports[j].dapm = dapm;
1687 
1688                         /* add to route from Jack widget to output */
1689                         hdac_hdmi_fill_route(&route[i], pin->ports[j].jack_pin,
1690                                         NULL, pin->ports[j].output_pin, NULL);
1691 
1692                         i++;
1693                 }
1694         }
1695 
1696         /* Add Route from Jack widget to the output widget */
1697         ret = snd_soc_dapm_new_controls(dapm, widgets, hdmi->num_ports);
1698         if (ret < 0)
1699                 return ret;
1700 
1701         ret = snd_soc_dapm_add_routes(dapm, route, hdmi->num_ports);
1702         if (ret < 0)
1703                 return ret;
1704 
1705         ret = snd_soc_dapm_new_widgets(dapm->card);
1706         if (ret < 0)
1707                 return ret;
1708 
1709         /* Add Jack Pin switch Kcontrol */
1710         ret = create_fill_jack_kcontrols(dapm->card, edev);
1711 
1712         if (ret < 0)
1713                 return ret;
1714 
1715         /* default set the Jack Pin switch to OFF */
1716         list_for_each_entry(pin, &hdmi->pin_list, head) {
1717                 for (j = 0; j < pin->num_ports; j++)
1718                         snd_soc_dapm_disable_pin(pin->ports[j].dapm,
1719                                                 pin->ports[j].jack_pin);
1720         }
1721 
1722         return 0;
1723 }
1724 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_port_init);
1725 
1726 int hdac_hdmi_jack_init(struct snd_soc_dai *dai, int device,
1727                                 struct snd_soc_jack *jack)
1728 {
1729         struct snd_soc_codec *codec = dai->codec;
1730         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1731         struct hdac_hdmi_priv *hdmi = edev->private_data;
1732         struct hdac_hdmi_pcm *pcm;
1733         struct snd_pcm *snd_pcm;
1734         int err;
1735 
1736         /*
1737          * this is a new PCM device, create new pcm and
1738          * add to the pcm list
1739          */
1740         pcm = kzalloc(sizeof(*pcm), GFP_KERNEL);
1741         if (!pcm)
1742                 return -ENOMEM;
1743         pcm->pcm_id = device;
1744         pcm->cvt = hdmi->dai_map[dai->id].cvt;
1745         pcm->jack_event = 0;
1746         pcm->jack = jack;
1747         mutex_init(&pcm->lock);
1748         INIT_LIST_HEAD(&pcm->port_list);
1749         snd_pcm = hdac_hdmi_get_pcm_from_id(dai->component->card, device);
1750         if (snd_pcm) {
1751                 err = snd_hdac_add_chmap_ctls(snd_pcm, device, &hdmi->chmap);
1752                 if (err < 0) {
1753                         dev_err(&edev->hdac.dev,
1754                                 "chmap control add failed with err: %d for pcm: %d\n",
1755                                 err, device);
1756                         kfree(pcm);
1757                         return err;
1758                 }
1759         }
1760 
1761         list_add_tail(&pcm->head, &hdmi->pcm_list);
1762 
1763         return 0;
1764 }
1765 EXPORT_SYMBOL_GPL(hdac_hdmi_jack_init);
1766 
1767 static void hdac_hdmi_present_sense_all_pins(struct hdac_ext_device *edev,
1768                         struct hdac_hdmi_priv *hdmi, bool detect_pin_caps)
1769 {
1770         int i;
1771         struct hdac_hdmi_pin *pin;
1772 
1773         list_for_each_entry(pin, &hdmi->pin_list, head) {
1774                 if (detect_pin_caps) {
1775 
1776                         if (hdac_hdmi_get_port_len(edev, pin->nid)  == 0)
1777                                 pin->mst_capable = false;
1778                         else
1779                                 pin->mst_capable = true;
1780                 }
1781 
1782                 for (i = 0; i < pin->num_ports; i++) {
1783                         if (!pin->mst_capable && i > 0)
1784                                 continue;
1785 
1786                         hdac_hdmi_present_sense(pin, &pin->ports[i]);
1787                 }
1788         }
1789 }
1790 
1791 static int hdmi_codec_probe(struct snd_soc_codec *codec)
1792 {
1793         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1794         struct hdac_hdmi_priv *hdmi = edev->private_data;
1795         struct snd_soc_dapm_context *dapm =
1796                 snd_soc_component_get_dapm(&codec->component);
1797         struct hdac_ext_link *hlink = NULL;
1798         int ret;
1799 
1800         edev->scodec = codec;
1801 
1802         /*
1803          * hold the ref while we probe, also no need to drop the ref on
1804          * exit, we call pm_runtime_suspend() so that will do for us
1805          */
1806         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1807         if (!hlink) {
1808                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1809                 return -EIO;
1810         }
1811 
1812         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
1813 
1814         ret = create_fill_widget_route_map(dapm);
1815         if (ret < 0)
1816                 return ret;
1817 
1818         aops.audio_ptr = edev;
1819         ret = snd_hdac_i915_register_notifier(&aops);
1820         if (ret < 0) {
1821                 dev_err(&edev->hdac.dev, "notifier register failed: err: %d\n",
1822                                 ret);
1823                 return ret;
1824         }
1825 
1826         hdac_hdmi_present_sense_all_pins(edev, hdmi, true);
1827         /* Imp: Store the card pointer in hda_codec */
1828         edev->card = dapm->card->snd_card;
1829 
1830         /*
1831          * hdac_device core already sets the state to active and calls
1832          * get_noresume. So enable runtime and set the device to suspend.
1833          */
1834         pm_runtime_enable(&edev->hdac.dev);
1835         pm_runtime_put(&edev->hdac.dev);
1836         pm_runtime_suspend(&edev->hdac.dev);
1837 
1838         return 0;
1839 }
1840 
1841 static int hdmi_codec_remove(struct snd_soc_codec *codec)
1842 {
1843         struct hdac_ext_device *edev = snd_soc_codec_get_drvdata(codec);
1844 
1845         pm_runtime_disable(&edev->hdac.dev);
1846         return 0;
1847 }
1848 
1849 #ifdef CONFIG_PM
1850 static int hdmi_codec_prepare(struct device *dev)
1851 {
1852         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1853         struct hdac_device *hdac = &edev->hdac;
1854 
1855         pm_runtime_get_sync(&edev->hdac.dev);
1856 
1857         /*
1858          * Power down afg.
1859          * codec_read is preferred over codec_write to set the power state.
1860          * This way verb is send to set the power state and response
1861          * is received. So setting power state is ensured without using loop
1862          * to read the state.
1863          */
1864         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1865                                                         AC_PWRST_D3);
1866 
1867         return 0;
1868 }
1869 
1870 static void hdmi_codec_complete(struct device *dev)
1871 {
1872         struct hdac_ext_device *edev = to_hda_ext_device(dev);
1873         struct hdac_hdmi_priv *hdmi = edev->private_data;
1874         struct hdac_device *hdac = &edev->hdac;
1875 
1876         /* Power up afg */
1877         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
1878                                                         AC_PWRST_D0);
1879 
1880         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
1881         hdac_hdmi_skl_enable_dp12(&edev->hdac);
1882 
1883         /*
1884          * As the ELD notify callback request is not entertained while the
1885          * device is in suspend state. Need to manually check detection of
1886          * all pins here. pin capablity change is not support, so use the
1887          * already set pin caps.
1888          */
1889         hdac_hdmi_present_sense_all_pins(edev, hdmi, false);
1890 
1891         pm_runtime_put_sync(&edev->hdac.dev);
1892 }
1893 #else
1894 #define hdmi_codec_prepare NULL
1895 #define hdmi_codec_complete NULL
1896 #endif
1897 
1898 static const struct snd_soc_codec_driver hdmi_hda_codec = {
1899         .probe          = hdmi_codec_probe,
1900         .remove         = hdmi_codec_remove,
1901         .idle_bias_off  = true,
1902 };
1903 
1904 static void hdac_hdmi_get_chmap(struct hdac_device *hdac, int pcm_idx,
1905                                         unsigned char *chmap)
1906 {
1907         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1908         struct hdac_hdmi_priv *hdmi = edev->private_data;
1909         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1910 
1911         memcpy(chmap, pcm->chmap, ARRAY_SIZE(pcm->chmap));
1912 }
1913 
1914 static void hdac_hdmi_set_chmap(struct hdac_device *hdac, int pcm_idx,
1915                                 unsigned char *chmap, int prepared)
1916 {
1917         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1918         struct hdac_hdmi_priv *hdmi = edev->private_data;
1919         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1920         struct hdac_hdmi_port *port;
1921 
1922         if (!pcm)
1923                 return;
1924 
1925         if (list_empty(&pcm->port_list))
1926                 return;
1927 
1928         mutex_lock(&pcm->lock);
1929         pcm->chmap_set = true;
1930         memcpy(pcm->chmap, chmap, ARRAY_SIZE(pcm->chmap));
1931         list_for_each_entry(port, &pcm->port_list, head)
1932                 if (prepared)
1933                         hdac_hdmi_setup_audio_infoframe(edev, pcm, port);
1934         mutex_unlock(&pcm->lock);
1935 }
1936 
1937 static bool is_hdac_hdmi_pcm_attached(struct hdac_device *hdac, int pcm_idx)
1938 {
1939         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1940         struct hdac_hdmi_priv *hdmi = edev->private_data;
1941         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1942 
1943         if (!pcm)
1944                 return false;
1945 
1946         if (list_empty(&pcm->port_list))
1947                 return false;
1948 
1949         return true;
1950 }
1951 
1952 static int hdac_hdmi_get_spk_alloc(struct hdac_device *hdac, int pcm_idx)
1953 {
1954         struct hdac_ext_device *edev = to_ehdac_device(hdac);
1955         struct hdac_hdmi_priv *hdmi = edev->private_data;
1956         struct hdac_hdmi_pcm *pcm = get_hdmi_pcm_from_id(hdmi, pcm_idx);
1957         struct hdac_hdmi_port *port;
1958 
1959         if (!pcm)
1960                 return 0;
1961 
1962         if (list_empty(&pcm->port_list))
1963                 return 0;
1964 
1965         port = list_first_entry(&pcm->port_list, struct hdac_hdmi_port, head);
1966 
1967         if (!port)
1968                 return 0;
1969 
1970         if (!port || !port->eld.eld_valid)
1971                 return 0;
1972 
1973         return port->eld.info.spk_alloc;
1974 }
1975 
1976 static struct hdac_hdmi_drv_data intel_glk_drv_data  = {
1977         .vendor_nid = INTEL_GLK_VENDOR_NID,
1978 };
1979 
1980 static struct hdac_hdmi_drv_data intel_drv_data  = {
1981         .vendor_nid = INTEL_VENDOR_NID,
1982 };
1983 
1984 static int hdac_hdmi_dev_probe(struct hdac_ext_device *edev)
1985 {
1986         struct hdac_device *codec = &edev->hdac;
1987         struct hdac_hdmi_priv *hdmi_priv;
1988         struct snd_soc_dai_driver *hdmi_dais = NULL;
1989         struct hdac_ext_link *hlink = NULL;
1990         int num_dais = 0;
1991         int ret = 0;
1992         struct hdac_driver *hdrv = drv_to_hdac_driver(codec->dev.driver);
1993         const struct hda_device_id *hdac_id = hdac_get_device_id(codec, hdrv);
1994 
1995         /* hold the ref while we probe */
1996         hlink = snd_hdac_ext_bus_get_link(edev->ebus, dev_name(&edev->hdac.dev));
1997         if (!hlink) {
1998                 dev_err(&edev->hdac.dev, "hdac link not found\n");
1999                 return -EIO;
2000         }
2001 
2002         snd_hdac_ext_bus_link_get(edev->ebus, hlink);
2003 
2004         hdmi_priv = devm_kzalloc(&codec->dev, sizeof(*hdmi_priv), GFP_KERNEL);
2005         if (hdmi_priv == NULL)
2006                 return -ENOMEM;
2007 
2008         edev->private_data = hdmi_priv;
2009         snd_hdac_register_chmap_ops(codec, &hdmi_priv->chmap);
2010         hdmi_priv->chmap.ops.get_chmap = hdac_hdmi_get_chmap;
2011         hdmi_priv->chmap.ops.set_chmap = hdac_hdmi_set_chmap;
2012         hdmi_priv->chmap.ops.is_pcm_attached = is_hdac_hdmi_pcm_attached;
2013         hdmi_priv->chmap.ops.get_spk_alloc = hdac_hdmi_get_spk_alloc;
2014 
2015         if (!hdac_id)
2016                 return -ENODEV;
2017 
2018         if (hdac_id->driver_data)
2019                 hdmi_priv->drv_data =
2020                         (struct hdac_hdmi_drv_data *)hdac_id->driver_data;
2021         else
2022                 hdmi_priv->drv_data = &intel_drv_data;
2023 
2024         dev_set_drvdata(&codec->dev, edev);
2025 
2026         INIT_LIST_HEAD(&hdmi_priv->pin_list);
2027         INIT_LIST_HEAD(&hdmi_priv->cvt_list);
2028         INIT_LIST_HEAD(&hdmi_priv->pcm_list);
2029         mutex_init(&hdmi_priv->pin_mutex);
2030 
2031         /*
2032          * Turned off in the runtime_suspend during the first explicit
2033          * pm_runtime_suspend call.
2034          */
2035         ret = snd_hdac_display_power(edev->hdac.bus, true);
2036         if (ret < 0) {
2037                 dev_err(&edev->hdac.dev,
2038                         "Cannot turn on display power on i915 err: %d\n",
2039                         ret);
2040                 return ret;
2041         }
2042 
2043         ret = hdac_hdmi_parse_and_map_nid(edev, &hdmi_dais, &num_dais);
2044         if (ret < 0) {
2045                 dev_err(&codec->dev,
2046                         "Failed in parse and map nid with err: %d\n", ret);
2047                 return ret;
2048         }
2049 
2050         /* ASoC specific initialization */
2051         ret = snd_soc_register_codec(&codec->dev, &hdmi_hda_codec,
2052                                         hdmi_dais, num_dais);
2053 
2054         snd_hdac_ext_bus_link_put(edev->ebus, hlink);
2055 
2056         return ret;
2057 }
2058 
2059 static int hdac_hdmi_dev_remove(struct hdac_ext_device *edev)
2060 {
2061         struct hdac_hdmi_priv *hdmi = edev->private_data;
2062         struct hdac_hdmi_pin *pin, *pin_next;
2063         struct hdac_hdmi_cvt *cvt, *cvt_next;
2064         struct hdac_hdmi_pcm *pcm, *pcm_next;
2065         struct hdac_hdmi_port *port, *port_next;
2066         int i;
2067 
2068         snd_soc_unregister_codec(&edev->hdac.dev);
2069 
2070         list_for_each_entry_safe(pcm, pcm_next, &hdmi->pcm_list, head) {
2071                 pcm->cvt = NULL;
2072                 if (list_empty(&pcm->port_list))
2073                         continue;
2074 
2075                 list_for_each_entry_safe(port, port_next,
2076                                         &pcm->port_list, head)
2077                         list_del(&port->head);
2078 
2079                 list_del(&pcm->head);
2080                 kfree(pcm);
2081         }
2082 
2083         list_for_each_entry_safe(cvt, cvt_next, &hdmi->cvt_list, head) {
2084                 list_del(&cvt->head);
2085                 kfree(cvt->name);
2086                 kfree(cvt);
2087         }
2088 
2089         list_for_each_entry_safe(pin, pin_next, &hdmi->pin_list, head) {
2090                 for (i = 0; i < pin->num_ports; i++)
2091                         pin->ports[i].pin = NULL;
2092                 kfree(pin->ports);
2093                 list_del(&pin->head);
2094                 kfree(pin);
2095         }
2096 
2097         return 0;
2098 }
2099 
2100 #ifdef CONFIG_PM
2101 static int hdac_hdmi_runtime_suspend(struct device *dev)
2102 {
2103         struct hdac_ext_device *edev = to_hda_ext_device(dev);
2104         struct hdac_device *hdac = &edev->hdac;
2105         struct hdac_bus *bus = hdac->bus;
2106         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
2107         struct hdac_ext_link *hlink = NULL;
2108         int err;
2109 
2110         dev_dbg(dev, "Enter: %s\n", __func__);
2111 
2112         /* controller may not have been initialized for the first time */
2113         if (!bus)
2114                 return 0;
2115 
2116         /*
2117          * Power down afg.
2118          * codec_read is preferred over codec_write to set the power state.
2119          * This way verb is send to set the power state and response
2120          * is received. So setting power state is ensured without using loop
2121          * to read the state.
2122          */
2123         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
2124                                                         AC_PWRST_D3);
2125         err = snd_hdac_display_power(bus, false);
2126         if (err < 0) {
2127                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
2128                 return err;
2129         }
2130 
2131         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
2132         if (!hlink) {
2133                 dev_err(dev, "hdac link not found\n");
2134                 return -EIO;
2135         }
2136 
2137         snd_hdac_ext_bus_link_put(ebus, hlink);
2138 
2139         return 0;
2140 }
2141 
2142 static int hdac_hdmi_runtime_resume(struct device *dev)
2143 {
2144         struct hdac_ext_device *edev = to_hda_ext_device(dev);
2145         struct hdac_device *hdac = &edev->hdac;
2146         struct hdac_bus *bus = hdac->bus;
2147         struct hdac_ext_bus *ebus = hbus_to_ebus(bus);
2148         struct hdac_ext_link *hlink = NULL;
2149         int err;
2150 
2151         dev_dbg(dev, "Enter: %s\n", __func__);
2152 
2153         /* controller may not have been initialized for the first time */
2154         if (!bus)
2155                 return 0;
2156 
2157         hlink = snd_hdac_ext_bus_get_link(ebus, dev_name(dev));
2158         if (!hlink) {
2159                 dev_err(dev, "hdac link not found\n");
2160                 return -EIO;
2161         }
2162 
2163         snd_hdac_ext_bus_link_get(ebus, hlink);
2164 
2165         err = snd_hdac_display_power(bus, true);
2166         if (err < 0) {
2167                 dev_err(bus->dev, "Cannot turn on display power on i915\n");
2168                 return err;
2169         }
2170 
2171         hdac_hdmi_skl_enable_all_pins(&edev->hdac);
2172         hdac_hdmi_skl_enable_dp12(&edev->hdac);
2173 
2174         /* Power up afg */
2175         snd_hdac_codec_read(hdac, hdac->afg, 0, AC_VERB_SET_POWER_STATE,
2176                                                         AC_PWRST_D0);
2177 
2178         return 0;
2179 }
2180 #else
2181 #define hdac_hdmi_runtime_suspend NULL
2182 #define hdac_hdmi_runtime_resume NULL
2183 #endif
2184 
2185 static const struct dev_pm_ops hdac_hdmi_pm = {
2186         SET_RUNTIME_PM_OPS(hdac_hdmi_runtime_suspend, hdac_hdmi_runtime_resume, NULL)
2187         .prepare = hdmi_codec_prepare,
2188         .complete = hdmi_codec_complete,
2189 };
2190 
2191 static const struct hda_device_id hdmi_list[] = {
2192         HDA_CODEC_EXT_ENTRY(0x80862809, 0x100000, "Skylake HDMI", 0),
2193         HDA_CODEC_EXT_ENTRY(0x8086280a, 0x100000, "Broxton HDMI", 0),
2194         HDA_CODEC_EXT_ENTRY(0x8086280b, 0x100000, "Kabylake HDMI", 0),
2195         HDA_CODEC_EXT_ENTRY(0x8086280d, 0x100000, "Geminilake HDMI",
2196                                                    &intel_glk_drv_data),
2197         {}
2198 };
2199 
2200 MODULE_DEVICE_TABLE(hdaudio, hdmi_list);
2201 
2202 static struct hdac_ext_driver hdmi_driver = {
2203         . hdac = {
2204                 .driver = {
2205                         .name   = "HDMI HDA Codec",
2206                         .pm = &hdac_hdmi_pm,
2207                 },
2208                 .id_table       = hdmi_list,
2209         },
2210         .probe          = hdac_hdmi_dev_probe,
2211         .remove         = hdac_hdmi_dev_remove,
2212 };
2213 
2214 static int __init hdmi_init(void)
2215 {
2216         return snd_hda_ext_driver_register(&hdmi_driver);
2217 }
2218 
2219 static void __exit hdmi_exit(void)
2220 {
2221         snd_hda_ext_driver_unregister(&hdmi_driver);
2222 }
2223 
2224 module_init(hdmi_init);
2225 module_exit(hdmi_exit);
2226 
2227 MODULE_LICENSE("GPL v2");
2228 MODULE_DESCRIPTION("HDMI HD codec");
2229 MODULE_AUTHOR("Samreen Nilofer<samreen.nilofer@intel.com>");
2230 MODULE_AUTHOR("Subhransu S. Prusty<subhransu.s.prusty@intel.com>");
2231 

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