1 // SPDX-License-Identifier: GPL-2.0
3 * APBridge ALSA SoC dummy codec driver
4 * Copyright 2016 Google Inc.
5 * Copyright 2016 Linaro Ltd.
7 #include <linux/kernel.h>
8 #include <linux/module.h>
9 #include <linux/pm_runtime.h>
10 #include <sound/soc.h>
11 #include <sound/pcm_params.h>
12 #include <uapi/linux/input.h>
14 #include "audio_codec.h"
15 #include "audio_apbridgea.h"
16 #include "audio_manager.h"
17 #include "audio_helper.h"
19 static struct gbaudio_codec_info *gbcodec;
21 static struct gbaudio_data_connection *
22 find_data(struct gbaudio_module_info *module, int id)
24 struct gbaudio_data_connection *data;
26 list_for_each_entry(data, &module->data_list, list) {
33 static struct gbaudio_stream_params *
34 find_dai_stream_params(struct gbaudio_codec_info *codec, int id, int stream)
36 struct gbaudio_codec_dai *dai;
38 list_for_each_entry(dai, &codec->dai_list, list) {
40 return &dai->params[stream];
45 static int gbaudio_module_enable_tx(struct gbaudio_codec_info *codec,
46 struct gbaudio_module_info *module, int id)
48 int module_state, ret = 0;
49 u16 data_cport, i2s_port, cportid;
50 u8 sig_bits, channels;
52 struct gbaudio_data_connection *data;
53 struct gbaudio_stream_params *params;
56 data = find_data(module, id);
58 dev_err(module->dev, "%d:DATA connection missing\n", id);
61 module_state = data->state[SNDRV_PCM_STREAM_PLAYBACK];
63 params = find_dai_stream_params(codec, id, SNDRV_PCM_STREAM_PLAYBACK);
65 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
70 if (module_state < GBAUDIO_CODEC_STARTUP) {
71 i2s_port = 0; /* fixed for now */
72 cportid = data->connection->hd_cport_id;
73 ret = gb_audio_apbridgea_register_cport(data->connection,
75 AUDIO_APBRIDGEA_DIRECTION_TX);
77 dev_err_ratelimited(module->dev,
78 "reg_cport failed:%d\n", ret);
81 data->state[SNDRV_PCM_STREAM_PLAYBACK] =
82 GBAUDIO_CODEC_STARTUP;
83 dev_dbg(module->dev, "Dynamic Register %d DAI\n", cportid);
87 if (module_state < GBAUDIO_CODEC_HWPARAMS) {
88 format = params->format;
89 channels = params->channels;
91 sig_bits = params->sig_bits;
92 data_cport = data->connection->intf_cport_id;
93 ret = gb_audio_gb_set_pcm(module->mgmt_connection, data_cport,
94 format, rate, channels, sig_bits);
96 dev_err_ratelimited(module->dev, "set_pcm failed:%d\n",
100 data->state[SNDRV_PCM_STREAM_PLAYBACK] =
101 GBAUDIO_CODEC_HWPARAMS;
102 dev_dbg(module->dev, "Dynamic hw_params %d DAI\n", data_cport);
106 if (module_state < GBAUDIO_CODEC_PREPARE) {
107 data_cport = data->connection->intf_cport_id;
108 ret = gb_audio_gb_set_tx_data_size(module->mgmt_connection,
111 dev_err_ratelimited(module->dev,
112 "set_tx_data_size failed:%d\n",
116 ret = gb_audio_gb_activate_tx(module->mgmt_connection,
119 dev_err_ratelimited(module->dev,
120 "activate_tx failed:%d\n", ret);
123 data->state[SNDRV_PCM_STREAM_PLAYBACK] =
124 GBAUDIO_CODEC_PREPARE;
125 dev_dbg(module->dev, "Dynamic prepare %d DAI\n", data_cport);
131 static int gbaudio_module_disable_tx(struct gbaudio_module_info *module, int id)
134 u16 data_cport, cportid, i2s_port;
136 struct gbaudio_data_connection *data;
139 data = find_data(module, id);
141 dev_err(module->dev, "%d:DATA connection missing\n", id);
144 module_state = data->state[SNDRV_PCM_STREAM_PLAYBACK];
146 if (module_state > GBAUDIO_CODEC_HWPARAMS) {
147 data_cport = data->connection->intf_cport_id;
148 ret = gb_audio_gb_deactivate_tx(module->mgmt_connection,
151 dev_err_ratelimited(module->dev,
152 "deactivate_tx failed:%d\n", ret);
155 dev_dbg(module->dev, "Dynamic deactivate %d DAI\n", data_cport);
156 data->state[SNDRV_PCM_STREAM_PLAYBACK] =
157 GBAUDIO_CODEC_HWPARAMS;
160 if (module_state > GBAUDIO_CODEC_SHUTDOWN) {
161 i2s_port = 0; /* fixed for now */
162 cportid = data->connection->hd_cport_id;
163 ret = gb_audio_apbridgea_unregister_cport(data->connection,
165 AUDIO_APBRIDGEA_DIRECTION_TX);
167 dev_err_ratelimited(module->dev,
168 "unregister_cport failed:%d\n",
172 dev_dbg(module->dev, "Dynamic Unregister %d DAI\n", cportid);
173 data->state[SNDRV_PCM_STREAM_PLAYBACK] =
174 GBAUDIO_CODEC_SHUTDOWN;
180 static int gbaudio_module_enable_rx(struct gbaudio_codec_info *codec,
181 struct gbaudio_module_info *module, int id)
183 int module_state, ret = 0;
184 u16 data_cport, i2s_port, cportid;
185 u8 sig_bits, channels;
187 struct gbaudio_data_connection *data;
188 struct gbaudio_stream_params *params;
191 data = find_data(module, id);
193 dev_err(module->dev, "%d:DATA connection missing\n", id);
196 module_state = data->state[SNDRV_PCM_STREAM_CAPTURE];
198 params = find_dai_stream_params(codec, id, SNDRV_PCM_STREAM_CAPTURE);
200 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
205 if (module_state < GBAUDIO_CODEC_STARTUP) {
206 i2s_port = 0; /* fixed for now */
207 cportid = data->connection->hd_cport_id;
208 ret = gb_audio_apbridgea_register_cport(data->connection,
210 AUDIO_APBRIDGEA_DIRECTION_RX);
212 dev_err_ratelimited(module->dev,
213 "reg_cport failed:%d\n", ret);
216 data->state[SNDRV_PCM_STREAM_CAPTURE] =
217 GBAUDIO_CODEC_STARTUP;
218 dev_dbg(module->dev, "Dynamic Register %d DAI\n", cportid);
222 if (module_state < GBAUDIO_CODEC_HWPARAMS) {
223 format = params->format;
224 channels = params->channels;
226 sig_bits = params->sig_bits;
227 data_cport = data->connection->intf_cport_id;
228 ret = gb_audio_gb_set_pcm(module->mgmt_connection, data_cport,
229 format, rate, channels, sig_bits);
231 dev_err_ratelimited(module->dev, "set_pcm failed:%d\n",
235 data->state[SNDRV_PCM_STREAM_CAPTURE] =
236 GBAUDIO_CODEC_HWPARAMS;
237 dev_dbg(module->dev, "Dynamic hw_params %d DAI\n", data_cport);
241 if (module_state < GBAUDIO_CODEC_PREPARE) {
242 data_cport = data->connection->intf_cport_id;
243 ret = gb_audio_gb_set_rx_data_size(module->mgmt_connection,
246 dev_err_ratelimited(module->dev,
247 "set_rx_data_size failed:%d\n",
251 ret = gb_audio_gb_activate_rx(module->mgmt_connection,
254 dev_err_ratelimited(module->dev,
255 "activate_rx failed:%d\n", ret);
258 data->state[SNDRV_PCM_STREAM_CAPTURE] =
259 GBAUDIO_CODEC_PREPARE;
260 dev_dbg(module->dev, "Dynamic prepare %d DAI\n", data_cport);
266 static int gbaudio_module_disable_rx(struct gbaudio_module_info *module, int id)
269 u16 data_cport, cportid, i2s_port;
271 struct gbaudio_data_connection *data;
274 data = find_data(module, id);
276 dev_err(module->dev, "%d:DATA connection missing\n", id);
279 module_state = data->state[SNDRV_PCM_STREAM_CAPTURE];
281 if (module_state > GBAUDIO_CODEC_HWPARAMS) {
282 data_cport = data->connection->intf_cport_id;
283 ret = gb_audio_gb_deactivate_rx(module->mgmt_connection,
286 dev_err_ratelimited(module->dev,
287 "deactivate_rx failed:%d\n", ret);
290 dev_dbg(module->dev, "Dynamic deactivate %d DAI\n", data_cport);
291 data->state[SNDRV_PCM_STREAM_CAPTURE] =
292 GBAUDIO_CODEC_HWPARAMS;
295 if (module_state > GBAUDIO_CODEC_SHUTDOWN) {
296 i2s_port = 0; /* fixed for now */
297 cportid = data->connection->hd_cport_id;
298 ret = gb_audio_apbridgea_unregister_cport(data->connection,
300 AUDIO_APBRIDGEA_DIRECTION_RX);
302 dev_err_ratelimited(module->dev,
303 "unregister_cport failed:%d\n",
307 dev_dbg(module->dev, "Dynamic Unregister %d DAI\n", cportid);
308 data->state[SNDRV_PCM_STREAM_CAPTURE] =
309 GBAUDIO_CODEC_SHUTDOWN;
315 int gbaudio_module_update(struct gbaudio_codec_info *codec,
316 struct snd_soc_dapm_widget *w,
317 struct gbaudio_module_info *module, int enable)
320 char intf_name[NAME_SIZE], dir[NAME_SIZE];
322 dev_dbg(module->dev, "%s:Module update %s sequence\n", w->name,
323 enable ? "Enable" : "Disable");
325 if ((w->id != snd_soc_dapm_aif_in) && (w->id != snd_soc_dapm_aif_out)) {
326 dev_dbg(codec->dev, "No action required for %s\n", w->name);
330 /* parse dai_id from AIF widget's stream_name */
331 ret = sscanf(w->sname, "%s %d %s", intf_name, &dai_id, dir);
333 dev_err(codec->dev, "Error while parsing dai_id for %s\n",
338 mutex_lock(&codec->lock);
339 if (w->id == snd_soc_dapm_aif_in) {
341 ret = gbaudio_module_enable_tx(codec, module, dai_id);
343 ret = gbaudio_module_disable_tx(module, dai_id);
344 } else if (w->id == snd_soc_dapm_aif_out) {
346 ret = gbaudio_module_enable_rx(codec, module, dai_id);
348 ret = gbaudio_module_disable_rx(module, dai_id);
351 mutex_unlock(&codec->lock);
355 EXPORT_SYMBOL(gbaudio_module_update);
360 static int gbcodec_startup(struct snd_pcm_substream *substream,
361 struct snd_soc_dai *dai)
363 struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev);
364 struct gbaudio_stream_params *params;
366 mutex_lock(&codec->lock);
368 if (list_empty(&codec->module_list)) {
369 dev_err(codec->dev, "No codec module available\n");
370 mutex_unlock(&codec->lock);
374 params = find_dai_stream_params(codec, dai->id, substream->stream);
376 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
377 mutex_unlock(&codec->lock);
380 params->state = GBAUDIO_CODEC_STARTUP;
381 mutex_unlock(&codec->lock);
382 /* to prevent suspend in case of active audio */
383 pm_stay_awake(dai->dev);
388 static void gbcodec_shutdown(struct snd_pcm_substream *substream,
389 struct snd_soc_dai *dai)
391 struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev);
392 struct gbaudio_stream_params *params;
394 mutex_lock(&codec->lock);
396 if (list_empty(&codec->module_list))
397 dev_info(codec->dev, "No codec module available during shutdown\n");
399 params = find_dai_stream_params(codec, dai->id, substream->stream);
401 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
402 mutex_unlock(&codec->lock);
405 params->state = GBAUDIO_CODEC_SHUTDOWN;
406 mutex_unlock(&codec->lock);
410 static int gbcodec_hw_params(struct snd_pcm_substream *substream,
411 struct snd_pcm_hw_params *hwparams,
412 struct snd_soc_dai *dai)
415 u8 sig_bits, channels;
417 struct gbaudio_module_info *module;
418 struct gbaudio_data_connection *data;
419 struct gb_bundle *bundle;
420 struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev);
421 struct gbaudio_stream_params *params;
423 mutex_lock(&codec->lock);
425 if (list_empty(&codec->module_list)) {
426 dev_err(codec->dev, "No codec module available\n");
427 mutex_unlock(&codec->lock);
432 * assuming, currently only 48000 Hz, 16BIT_LE, stereo
433 * is supported, validate params before configuring codec
435 if (params_channels(hwparams) != 2) {
436 dev_err(dai->dev, "Invalid channel count:%d\n",
437 params_channels(hwparams));
438 mutex_unlock(&codec->lock);
441 channels = params_channels(hwparams);
443 if (params_rate(hwparams) != 48000) {
444 dev_err(dai->dev, "Invalid sampling rate:%d\n",
445 params_rate(hwparams));
446 mutex_unlock(&codec->lock);
449 rate = GB_AUDIO_PCM_RATE_48000;
451 if (params_format(hwparams) != SNDRV_PCM_FORMAT_S16_LE) {
452 dev_err(dai->dev, "Invalid format:%d\n",
453 params_format(hwparams));
454 mutex_unlock(&codec->lock);
457 format = GB_AUDIO_PCM_FMT_S16_LE;
459 /* find the data connection */
460 list_for_each_entry(module, &codec->module_list, list) {
461 data = find_data(module, dai->id);
467 dev_err(dai->dev, "DATA connection missing\n");
468 mutex_unlock(&codec->lock);
472 params = find_dai_stream_params(codec, dai->id, substream->stream);
474 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
475 mutex_unlock(&codec->lock);
479 bundle = to_gb_bundle(module->dev);
480 ret = gb_pm_runtime_get_sync(bundle);
482 mutex_unlock(&codec->lock);
486 ret = gb_audio_apbridgea_set_config(data->connection, 0,
487 AUDIO_APBRIDGEA_PCM_FMT_16,
488 AUDIO_APBRIDGEA_PCM_RATE_48000,
491 dev_err_ratelimited(dai->dev, "%d: Error during set_config\n",
493 gb_pm_runtime_put_noidle(bundle);
494 mutex_unlock(&codec->lock);
498 gb_pm_runtime_put_noidle(bundle);
500 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
501 sig_bits = dai->driver->playback.sig_bits;
503 sig_bits = dai->driver->capture.sig_bits;
505 params->state = GBAUDIO_CODEC_HWPARAMS;
506 params->format = format;
508 params->channels = channels;
509 params->sig_bits = sig_bits;
511 mutex_unlock(&codec->lock);
515 static int gbcodec_prepare(struct snd_pcm_substream *substream,
516 struct snd_soc_dai *dai)
519 struct gbaudio_module_info *module;
520 struct gbaudio_data_connection *data;
521 struct gb_bundle *bundle;
522 struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev);
523 struct gbaudio_stream_params *params;
525 mutex_lock(&codec->lock);
527 if (list_empty(&codec->module_list)) {
528 dev_err(codec->dev, "No codec module available\n");
529 mutex_unlock(&codec->lock);
533 list_for_each_entry(module, &codec->module_list, list) {
535 data = find_data(module, dai->id);
540 dev_err(dai->dev, "DATA connection missing\n");
541 mutex_unlock(&codec->lock);
545 params = find_dai_stream_params(codec, dai->id, substream->stream);
547 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
548 mutex_unlock(&codec->lock);
552 bundle = to_gb_bundle(module->dev);
553 ret = gb_pm_runtime_get_sync(bundle);
555 mutex_unlock(&codec->lock);
559 switch (substream->stream) {
560 case SNDRV_PCM_STREAM_PLAYBACK:
561 ret = gb_audio_apbridgea_set_tx_data_size(data->connection, 0,
564 case SNDRV_PCM_STREAM_CAPTURE:
565 ret = gb_audio_apbridgea_set_rx_data_size(data->connection, 0,
570 gb_pm_runtime_put_noidle(bundle);
571 mutex_unlock(&codec->lock);
572 dev_err_ratelimited(dai->dev, "set_data_size failed:%d\n",
577 gb_pm_runtime_put_noidle(bundle);
579 params->state = GBAUDIO_CODEC_PREPARE;
580 mutex_unlock(&codec->lock);
584 static int gbcodec_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
587 struct gbaudio_data_connection *data;
588 struct gbaudio_module_info *module;
589 struct gb_bundle *bundle;
590 struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev);
591 struct gbaudio_stream_params *params;
593 dev_dbg(dai->dev, "Mute:%d, Direction:%s\n", mute,
594 stream ? "CAPTURE" : "PLAYBACK");
596 mutex_lock(&codec->lock);
598 params = find_dai_stream_params(codec, dai->id, stream);
600 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
601 mutex_unlock(&codec->lock);
605 if (list_empty(&codec->module_list)) {
606 dev_err(codec->dev, "No codec module available\n");
608 params->state = GBAUDIO_CODEC_STOP;
613 mutex_unlock(&codec->lock);
617 list_for_each_entry(module, &codec->module_list, list) {
619 data = find_data(module, dai->id);
624 dev_err(dai->dev, "%s DATA connection missing\n",
626 mutex_unlock(&codec->lock);
630 bundle = to_gb_bundle(module->dev);
631 ret = gb_pm_runtime_get_sync(bundle);
633 mutex_unlock(&codec->lock);
637 if (!mute && !stream) {/* start playback */
638 ret = gb_audio_apbridgea_prepare_tx(data->connection,
641 ret = gb_audio_apbridgea_start_tx(data->connection,
643 params->state = GBAUDIO_CODEC_START;
644 } else if (!mute && stream) {/* start capture */
645 ret = gb_audio_apbridgea_prepare_rx(data->connection,
648 ret = gb_audio_apbridgea_start_rx(data->connection,
650 params->state = GBAUDIO_CODEC_START;
651 } else if (mute && !stream) {/* stop playback */
652 ret = gb_audio_apbridgea_stop_tx(data->connection, 0);
654 ret = gb_audio_apbridgea_shutdown_tx(data->connection,
656 params->state = GBAUDIO_CODEC_STOP;
657 } else if (mute && stream) {/* stop capture */
658 ret = gb_audio_apbridgea_stop_rx(data->connection, 0);
660 ret = gb_audio_apbridgea_shutdown_rx(data->connection,
662 params->state = GBAUDIO_CODEC_STOP;
668 dev_err_ratelimited(dai->dev,
669 "%s:Error during %s %s stream:%d\n",
670 module->name, mute ? "Mute" : "Unmute",
671 stream ? "Capture" : "Playback", ret);
673 gb_pm_runtime_put_noidle(bundle);
674 mutex_unlock(&codec->lock);
678 static const struct snd_soc_dai_ops gbcodec_dai_ops = {
679 .startup = gbcodec_startup,
680 .shutdown = gbcodec_shutdown,
681 .hw_params = gbcodec_hw_params,
682 .prepare = gbcodec_prepare,
683 .mute_stream = gbcodec_mute_stream,
686 static struct snd_soc_dai_driver gbaudio_dai[] = {
691 .stream_name = "I2S 0 Playback",
692 .rates = SNDRV_PCM_RATE_48000,
693 .formats = SNDRV_PCM_FMTBIT_S16_LE,
701 .stream_name = "I2S 0 Capture",
702 .rates = SNDRV_PCM_RATE_48000,
703 .formats = SNDRV_PCM_FMTBIT_S16_LE,
710 .ops = &gbcodec_dai_ops,
714 static int gbaudio_init_jack(struct gbaudio_module_info *module,
715 struct snd_soc_card *card)
718 struct gbaudio_jack *jack, *n;
719 struct snd_soc_jack_pin *headset, *button;
721 if (!module->jack_mask)
724 snprintf(module->jack_name, NAME_SIZE, "GB %d Headset Jack",
727 headset = devm_kzalloc(module->dev, sizeof(*headset), GFP_KERNEL);
731 headset->pin = module->jack_name;
732 headset->mask = module->jack_mask;
733 ret = snd_soc_card_jack_new(card, module->jack_name, module->jack_mask,
734 &module->headset.jack, headset, 1);
736 dev_err(module->dev, "Failed to create new jack\n");
740 /* Add to module's jack list */
741 list_add(&module->headset.list, &module->jack_list);
743 if (!module->button_mask)
746 snprintf(module->button_name, NAME_SIZE, "GB %d Button Jack",
748 button = devm_kzalloc(module->dev, sizeof(*button), GFP_KERNEL);
754 button->pin = module->button_name;
755 button->mask = module->button_mask;
756 ret = snd_soc_card_jack_new(card, module->button_name,
757 module->button_mask, &module->button.jack,
760 dev_err(module->dev, "Failed to create button jack\n");
764 /* Add to module's jack list */
765 list_add(&module->button.list, &module->jack_list);
768 * Currently, max 4 buttons are supported with following key mapping
770 * BTN_1 = KEY_VOICECOMMAND
771 * BTN_2 = KEY_VOLUMEUP
772 * BTN_3 = KEY_VOLUMEDOWN
775 if (module->button_mask & SND_JACK_BTN_0) {
776 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_0,
779 dev_err(module->dev, "Failed to set BTN_0\n");
784 if (module->button_mask & SND_JACK_BTN_1) {
785 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_1,
788 dev_err(module->dev, "Failed to set BTN_1\n");
793 if (module->button_mask & SND_JACK_BTN_2) {
794 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_2,
797 dev_err(module->dev, "Failed to set BTN_2\n");
802 if (module->button_mask & SND_JACK_BTN_3) {
803 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_3,
806 dev_err(module->dev, "Failed to set BTN_0\n");
812 * verify if this is really required
813 set_bit(INPUT_PROP_NO_DUMMY_RELEASE,
814 module->button.jack.jack->input_dev->propbit);
820 list_for_each_entry_safe(jack, n, &module->jack_list, list) {
821 snd_device_free(card->snd_card, jack->jack.jack);
822 list_del(&jack->list);
828 int gbaudio_register_module(struct gbaudio_module_info *module)
831 struct snd_soc_component *comp;
832 struct snd_card *card;
833 struct gbaudio_jack *jack = NULL;
836 dev_err(module->dev, "GB Codec not yet probed\n");
840 comp = gbcodec->component;
841 card = comp->card->snd_card;
843 down_write(&card->controls_rwsem);
845 if (module->num_dais) {
846 dev_err(gbcodec->dev,
847 "%d:DAIs not supported via gbcodec driver\n",
849 up_write(&card->controls_rwsem);
853 ret = gbaudio_init_jack(module, comp->card);
855 up_write(&card->controls_rwsem);
859 if (module->dapm_widgets)
860 snd_soc_dapm_new_controls(&comp->dapm, module->dapm_widgets,
861 module->num_dapm_widgets);
862 if (module->controls)
863 snd_soc_add_component_controls(comp, module->controls,
864 module->num_controls);
865 if (module->dapm_routes)
866 snd_soc_dapm_add_routes(&comp->dapm, module->dapm_routes,
867 module->num_dapm_routes);
869 /* card already instantiated, create widgets here only */
870 if (comp->card->instantiated) {
871 gbaudio_dapm_link_component_dai_widgets(comp->card,
873 #ifdef CONFIG_SND_JACK
875 * register jack devices for this module
876 * from codec->jack_list
878 list_for_each_entry(jack, &module->jack_list, list) {
879 snd_device_register(comp->card->snd_card,
885 mutex_lock(&gbcodec->lock);
886 list_add(&module->list, &gbcodec->module_list);
887 mutex_unlock(&gbcodec->lock);
889 if (comp->card->instantiated)
890 ret = snd_soc_dapm_new_widgets(comp->card);
891 dev_dbg(comp->dev, "Registered %s module\n", module->name);
893 up_write(&card->controls_rwsem);
896 EXPORT_SYMBOL(gbaudio_register_module);
898 static void gbaudio_codec_clean_data_tx(struct gbaudio_data_connection *data)
900 u16 i2s_port, cportid;
903 if (list_is_singular(&gbcodec->module_list)) {
904 ret = gb_audio_apbridgea_stop_tx(data->connection, 0);
907 ret = gb_audio_apbridgea_shutdown_tx(data->connection,
912 i2s_port = 0; /* fixed for now */
913 cportid = data->connection->hd_cport_id;
914 ret = gb_audio_apbridgea_unregister_cport(data->connection,
916 AUDIO_APBRIDGEA_DIRECTION_TX);
917 data->state[0] = GBAUDIO_CODEC_SHUTDOWN;
920 static void gbaudio_codec_clean_data_rx(struct gbaudio_data_connection *data)
922 u16 i2s_port, cportid;
925 if (list_is_singular(&gbcodec->module_list)) {
926 ret = gb_audio_apbridgea_stop_rx(data->connection, 0);
929 ret = gb_audio_apbridgea_shutdown_rx(data->connection,
934 i2s_port = 0; /* fixed for now */
935 cportid = data->connection->hd_cport_id;
936 ret = gb_audio_apbridgea_unregister_cport(data->connection,
938 AUDIO_APBRIDGEA_DIRECTION_RX);
939 data->state[1] = GBAUDIO_CODEC_SHUTDOWN;
942 static void gbaudio_codec_cleanup(struct gbaudio_module_info *module)
944 struct gbaudio_data_connection *data;
945 int pb_state, cap_state;
947 dev_dbg(gbcodec->dev, "%s: removed, cleanup APBridge\n", module->name);
948 list_for_each_entry(data, &module->data_list, list) {
949 pb_state = data->state[0];
950 cap_state = data->state[1];
952 if (pb_state > GBAUDIO_CODEC_SHUTDOWN)
953 gbaudio_codec_clean_data_tx(data);
955 if (cap_state > GBAUDIO_CODEC_SHUTDOWN)
956 gbaudio_codec_clean_data_rx(data);
960 void gbaudio_unregister_module(struct gbaudio_module_info *module)
962 struct snd_soc_component *comp = gbcodec->component;
963 struct snd_card *card = comp->card->snd_card;
964 struct gbaudio_jack *jack, *n;
967 dev_dbg(comp->dev, "Unregister %s module\n", module->name);
969 down_write(&card->controls_rwsem);
970 mutex_lock(&gbcodec->lock);
971 gbaudio_codec_cleanup(module);
972 list_del(&module->list);
973 dev_dbg(comp->dev, "Process Unregister %s module\n", module->name);
974 mutex_unlock(&gbcodec->lock);
976 #ifdef CONFIG_SND_JACK
977 /* free jack devices for this module jack_list */
978 list_for_each_entry_safe(jack, n, &module->jack_list, list) {
979 if (jack == &module->headset)
980 mask = GBCODEC_JACK_MASK;
981 else if (jack == &module->button)
982 mask = GBCODEC_JACK_BUTTON_MASK;
986 dev_dbg(module->dev, "Report %s removal\n",
987 jack->jack.jack->id);
988 snd_soc_jack_report(&jack->jack, 0, mask);
989 snd_device_free(comp->card->snd_card,
991 list_del(&jack->list);
996 if (module->dapm_routes) {
997 dev_dbg(comp->dev, "Removing %d routes\n",
998 module->num_dapm_routes);
999 snd_soc_dapm_del_routes(&comp->dapm, module->dapm_routes,
1000 module->num_dapm_routes);
1002 if (module->controls) {
1003 dev_dbg(comp->dev, "Removing %d controls\n",
1004 module->num_controls);
1005 /* release control semaphore */
1006 up_write(&card->controls_rwsem);
1007 gbaudio_remove_component_controls(comp, module->controls,
1008 module->num_controls);
1009 down_write(&card->controls_rwsem);
1011 if (module->dapm_widgets) {
1012 dev_dbg(comp->dev, "Removing %d widgets\n",
1013 module->num_dapm_widgets);
1014 gbaudio_dapm_free_controls(&comp->dapm, module->dapm_widgets,
1015 module->num_dapm_widgets);
1018 dev_dbg(comp->dev, "Unregistered %s module\n", module->name);
1020 up_write(&card->controls_rwsem);
1022 EXPORT_SYMBOL(gbaudio_unregister_module);
1025 * component driver ops
1027 static int gbcodec_probe(struct snd_soc_component *comp)
1030 struct gbaudio_codec_info *info;
1031 struct gbaudio_codec_dai *dai;
1033 info = devm_kzalloc(comp->dev, sizeof(*info), GFP_KERNEL);
1037 info->dev = comp->dev;
1038 INIT_LIST_HEAD(&info->module_list);
1039 mutex_init(&info->lock);
1040 INIT_LIST_HEAD(&info->dai_list);
1042 /* init dai_list used to maintain runtime stream info */
1043 for (i = 0; i < ARRAY_SIZE(gbaudio_dai); i++) {
1044 dai = devm_kzalloc(comp->dev, sizeof(*dai), GFP_KERNEL);
1047 dai->id = gbaudio_dai[i].id;
1048 list_add(&dai->list, &info->dai_list);
1051 info->component = comp;
1052 snd_soc_component_set_drvdata(comp, info);
1055 device_init_wakeup(comp->dev, 1);
1059 static void gbcodec_remove(struct snd_soc_component *comp)
1061 /* Empty function for now */
1065 static int gbcodec_write(struct snd_soc_component *comp, unsigned int reg,
1071 static unsigned int gbcodec_read(struct snd_soc_component *comp,
1077 static const struct snd_soc_component_driver soc_codec_dev_gbaudio = {
1078 .probe = gbcodec_probe,
1079 .remove = gbcodec_remove,
1081 .read = gbcodec_read,
1082 .write = gbcodec_write,
1086 static int gbaudio_codec_suspend(struct device *dev)
1088 dev_dbg(dev, "%s: suspend\n", __func__);
1092 static int gbaudio_codec_resume(struct device *dev)
1094 dev_dbg(dev, "%s: resume\n", __func__);
1098 static const struct dev_pm_ops gbaudio_codec_pm_ops = {
1099 .suspend = gbaudio_codec_suspend,
1100 .resume = gbaudio_codec_resume,
1104 static int gbaudio_codec_probe(struct platform_device *pdev)
1106 return devm_snd_soc_register_component(&pdev->dev,
1107 &soc_codec_dev_gbaudio,
1108 gbaudio_dai, ARRAY_SIZE(gbaudio_dai));
1111 static int gbaudio_codec_remove(struct platform_device *pdev)
1116 static const struct of_device_id greybus_asoc_machine_of_match[] = {
1117 { .compatible = "toshiba,apb-dummy-codec", },
1121 static struct platform_driver gbaudio_codec_driver = {
1123 .name = "apb-dummy-codec",
1125 .pm = &gbaudio_codec_pm_ops,
1127 .of_match_table = greybus_asoc_machine_of_match,
1129 .probe = gbaudio_codec_probe,
1130 .remove = gbaudio_codec_remove,
1132 module_platform_driver(gbaudio_codec_driver);
1134 MODULE_DESCRIPTION("APBridge ALSA SoC dummy codec driver");
1135 MODULE_AUTHOR("Vaibhav Agarwal <vaibhav.agarwal@linaro.org>");
1136 MODULE_LICENSE("GPL v2");
1137 MODULE_ALIAS("platform:apb-dummy-codec");