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

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