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 mutex_unlock(&codec->lock);
497 gb_pm_runtime_put_noidle(bundle);
499 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
500 sig_bits = dai->driver->playback.sig_bits;
502 sig_bits = dai->driver->capture.sig_bits;
504 params->state = GBAUDIO_CODEC_HWPARAMS;
505 params->format = format;
507 params->channels = channels;
508 params->sig_bits = sig_bits;
510 mutex_unlock(&codec->lock);
514 static int gbcodec_prepare(struct snd_pcm_substream *substream,
515 struct snd_soc_dai *dai)
518 struct gbaudio_module_info *module;
519 struct gbaudio_data_connection *data;
520 struct gb_bundle *bundle;
521 struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev);
522 struct gbaudio_stream_params *params;
524 mutex_lock(&codec->lock);
526 if (list_empty(&codec->module_list)) {
527 dev_err(codec->dev, "No codec module available\n");
528 mutex_unlock(&codec->lock);
532 list_for_each_entry(module, &codec->module_list, list) {
534 data = find_data(module, dai->id);
539 dev_err(dai->dev, "DATA connection missing\n");
540 mutex_unlock(&codec->lock);
544 params = find_dai_stream_params(codec, dai->id, substream->stream);
546 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
547 mutex_unlock(&codec->lock);
551 bundle = to_gb_bundle(module->dev);
552 ret = gb_pm_runtime_get_sync(bundle);
554 mutex_unlock(&codec->lock);
558 switch (substream->stream) {
559 case SNDRV_PCM_STREAM_PLAYBACK:
560 ret = gb_audio_apbridgea_set_tx_data_size(data->connection, 0,
563 case SNDRV_PCM_STREAM_CAPTURE:
564 ret = gb_audio_apbridgea_set_rx_data_size(data->connection, 0,
569 mutex_unlock(&codec->lock);
570 dev_err_ratelimited(dai->dev, "set_data_size failed:%d\n",
575 gb_pm_runtime_put_noidle(bundle);
577 params->state = GBAUDIO_CODEC_PREPARE;
578 mutex_unlock(&codec->lock);
582 static int gbcodec_mute_stream(struct snd_soc_dai *dai, int mute, int stream)
585 struct gbaudio_data_connection *data;
586 struct gbaudio_module_info *module;
587 struct gb_bundle *bundle;
588 struct gbaudio_codec_info *codec = dev_get_drvdata(dai->dev);
589 struct gbaudio_stream_params *params;
591 dev_dbg(dai->dev, "Mute:%d, Direction:%s\n", mute,
592 stream ? "CAPTURE" : "PLAYBACK");
594 mutex_lock(&codec->lock);
596 params = find_dai_stream_params(codec, dai->id, stream);
598 dev_err(codec->dev, "Failed to fetch dai_stream pointer\n");
599 mutex_unlock(&codec->lock);
603 if (list_empty(&codec->module_list)) {
604 dev_err(codec->dev, "No codec module available\n");
606 params->state = GBAUDIO_CODEC_STOP;
611 mutex_unlock(&codec->lock);
615 list_for_each_entry(module, &codec->module_list, list) {
617 data = find_data(module, dai->id);
622 dev_err(dai->dev, "%s:%s DATA connection missing\n",
623 dai->name, module->name);
624 mutex_unlock(&codec->lock);
628 bundle = to_gb_bundle(module->dev);
629 ret = gb_pm_runtime_get_sync(bundle);
631 mutex_unlock(&codec->lock);
635 if (!mute && !stream) {/* start playback */
636 ret = gb_audio_apbridgea_prepare_tx(data->connection,
639 ret = gb_audio_apbridgea_start_tx(data->connection,
641 params->state = GBAUDIO_CODEC_START;
642 } else if (!mute && stream) {/* start capture */
643 ret = gb_audio_apbridgea_prepare_rx(data->connection,
646 ret = gb_audio_apbridgea_start_rx(data->connection,
648 params->state = GBAUDIO_CODEC_START;
649 } else if (mute && !stream) {/* stop playback */
650 ret = gb_audio_apbridgea_stop_tx(data->connection, 0);
652 ret = gb_audio_apbridgea_shutdown_tx(data->connection,
654 params->state = GBAUDIO_CODEC_STOP;
655 } else if (mute && stream) {/* stop capture */
656 ret = gb_audio_apbridgea_stop_rx(data->connection, 0);
658 ret = gb_audio_apbridgea_shutdown_rx(data->connection,
660 params->state = GBAUDIO_CODEC_STOP;
666 dev_err_ratelimited(dai->dev,
667 "%s:Error during %s %s stream:%d\n",
668 module->name, mute ? "Mute" : "Unmute",
669 stream ? "Capture" : "Playback", ret);
671 gb_pm_runtime_put_noidle(bundle);
672 mutex_unlock(&codec->lock);
676 static const struct snd_soc_dai_ops gbcodec_dai_ops = {
677 .startup = gbcodec_startup,
678 .shutdown = gbcodec_shutdown,
679 .hw_params = gbcodec_hw_params,
680 .prepare = gbcodec_prepare,
681 .mute_stream = gbcodec_mute_stream,
684 static struct snd_soc_dai_driver gbaudio_dai[] = {
689 .stream_name = "I2S 0 Playback",
690 .rates = SNDRV_PCM_RATE_48000,
691 .formats = SNDRV_PCM_FMTBIT_S16_LE,
699 .stream_name = "I2S 0 Capture",
700 .rates = SNDRV_PCM_RATE_48000,
701 .formats = SNDRV_PCM_FMTBIT_S16_LE,
708 .ops = &gbcodec_dai_ops,
712 static int gbaudio_init_jack(struct gbaudio_module_info *module,
713 struct snd_soc_card *card)
716 struct gbaudio_jack *jack, *n;
717 struct snd_soc_jack_pin *headset, *button;
719 if (!module->jack_mask)
722 snprintf(module->jack_name, NAME_SIZE, "GB %d Headset Jack",
725 headset = devm_kzalloc(module->dev, sizeof(*headset), GFP_KERNEL);
729 headset->pin = module->jack_name;
730 headset->mask = module->jack_mask;
731 ret = snd_soc_card_jack_new(card, module->jack_name, module->jack_mask,
732 &module->headset.jack, headset, 1);
734 dev_err(module->dev, "Failed to create new jack\n");
738 /* Add to module's jack list */
739 list_add(&module->headset.list, &module->jack_list);
741 if (!module->button_mask)
744 snprintf(module->button_name, NAME_SIZE, "GB %d Button Jack",
746 button = devm_kzalloc(module->dev, sizeof(*button), GFP_KERNEL);
752 button->pin = module->button_name;
753 button->mask = module->button_mask;
754 ret = snd_soc_card_jack_new(card, module->button_name,
755 module->button_mask, &module->button.jack,
758 dev_err(module->dev, "Failed to create button jack\n");
762 /* Add to module's jack list */
763 list_add(&module->button.list, &module->jack_list);
766 * Currently, max 4 buttons are supported with following key mapping
768 * BTN_1 = KEY_VOICECOMMAND
769 * BTN_2 = KEY_VOLUMEUP
770 * BTN_3 = KEY_VOLUMEDOWN
773 if (module->button_mask & SND_JACK_BTN_0) {
774 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_0,
777 dev_err(module->dev, "Failed to set BTN_0\n");
782 if (module->button_mask & SND_JACK_BTN_1) {
783 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_1,
786 dev_err(module->dev, "Failed to set BTN_1\n");
791 if (module->button_mask & SND_JACK_BTN_2) {
792 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_2,
795 dev_err(module->dev, "Failed to set BTN_2\n");
800 if (module->button_mask & SND_JACK_BTN_3) {
801 ret = snd_jack_set_key(module->button.jack.jack, SND_JACK_BTN_3,
804 dev_err(module->dev, "Failed to set BTN_0\n");
810 * verify if this is really required
811 set_bit(INPUT_PROP_NO_DUMMY_RELEASE,
812 module->button.jack.jack->input_dev->propbit);
818 list_for_each_entry_safe(jack, n, &module->jack_list, list) {
819 snd_device_free(card->snd_card, jack->jack.jack);
820 list_del(&jack->list);
826 int gbaudio_register_module(struct gbaudio_module_info *module)
829 struct snd_soc_component *comp;
830 struct snd_card *card;
831 struct gbaudio_jack *jack = NULL;
834 dev_err(module->dev, "GB Codec not yet probed\n");
838 comp = gbcodec->component;
839 card = comp->card->snd_card;
841 down_write(&card->controls_rwsem);
843 if (module->num_dais) {
844 dev_err(gbcodec->dev,
845 "%d:DAIs not supported via gbcodec driver\n",
847 up_write(&card->controls_rwsem);
851 ret = gbaudio_init_jack(module, comp->card);
853 up_write(&card->controls_rwsem);
857 if (module->dapm_widgets)
858 snd_soc_dapm_new_controls(&comp->dapm, module->dapm_widgets,
859 module->num_dapm_widgets);
860 if (module->controls)
861 snd_soc_add_component_controls(comp, module->controls,
862 module->num_controls);
863 if (module->dapm_routes)
864 snd_soc_dapm_add_routes(&comp->dapm, module->dapm_routes,
865 module->num_dapm_routes);
867 /* card already instantiated, create widgets here only */
868 if (comp->card->instantiated) {
869 gbaudio_dapm_link_component_dai_widgets(comp->card,
871 #ifdef CONFIG_SND_JACK
873 * register jack devices for this module
874 * from codec->jack_list
876 list_for_each_entry(jack, &module->jack_list, list) {
877 snd_device_register(comp->card->snd_card,
883 mutex_lock(&gbcodec->lock);
884 list_add(&module->list, &gbcodec->module_list);
885 mutex_unlock(&gbcodec->lock);
887 if (comp->card->instantiated)
888 ret = snd_soc_dapm_new_widgets(comp->card);
889 dev_dbg(comp->dev, "Registered %s module\n", module->name);
891 up_write(&card->controls_rwsem);
894 EXPORT_SYMBOL(gbaudio_register_module);
896 static void gbaudio_codec_clean_data_tx(struct gbaudio_data_connection *data)
898 u16 i2s_port, cportid;
901 if (list_is_singular(&gbcodec->module_list)) {
902 ret = gb_audio_apbridgea_stop_tx(data->connection, 0);
905 ret = gb_audio_apbridgea_shutdown_tx(data->connection,
910 i2s_port = 0; /* fixed for now */
911 cportid = data->connection->hd_cport_id;
912 ret = gb_audio_apbridgea_unregister_cport(data->connection,
914 AUDIO_APBRIDGEA_DIRECTION_TX);
915 data->state[0] = GBAUDIO_CODEC_SHUTDOWN;
918 static void gbaudio_codec_clean_data_rx(struct gbaudio_data_connection *data)
920 u16 i2s_port, cportid;
923 if (list_is_singular(&gbcodec->module_list)) {
924 ret = gb_audio_apbridgea_stop_rx(data->connection, 0);
927 ret = gb_audio_apbridgea_shutdown_rx(data->connection,
932 i2s_port = 0; /* fixed for now */
933 cportid = data->connection->hd_cport_id;
934 ret = gb_audio_apbridgea_unregister_cport(data->connection,
936 AUDIO_APBRIDGEA_DIRECTION_RX);
937 data->state[1] = GBAUDIO_CODEC_SHUTDOWN;
940 static void gbaudio_codec_cleanup(struct gbaudio_module_info *module)
942 struct gbaudio_data_connection *data;
943 int pb_state, cap_state;
945 dev_dbg(gbcodec->dev, "%s: removed, cleanup APBridge\n", module->name);
946 list_for_each_entry(data, &module->data_list, list) {
947 pb_state = data->state[0];
948 cap_state = data->state[1];
950 if (pb_state > GBAUDIO_CODEC_SHUTDOWN)
951 gbaudio_codec_clean_data_tx(data);
953 if (cap_state > GBAUDIO_CODEC_SHUTDOWN)
954 gbaudio_codec_clean_data_rx(data);
958 void gbaudio_unregister_module(struct gbaudio_module_info *module)
960 struct snd_soc_component *comp = gbcodec->component;
961 struct snd_card *card = comp->card->snd_card;
962 struct gbaudio_jack *jack, *n;
965 dev_dbg(comp->dev, "Unregister %s module\n", module->name);
967 down_write(&card->controls_rwsem);
968 mutex_lock(&gbcodec->lock);
969 gbaudio_codec_cleanup(module);
970 list_del(&module->list);
971 dev_dbg(comp->dev, "Process Unregister %s module\n", module->name);
972 mutex_unlock(&gbcodec->lock);
974 #ifdef CONFIG_SND_JACK
975 /* free jack devices for this module jack_list */
976 list_for_each_entry_safe(jack, n, &module->jack_list, list) {
977 if (jack == &module->headset)
978 mask = GBCODEC_JACK_MASK;
979 else if (jack == &module->button)
980 mask = GBCODEC_JACK_BUTTON_MASK;
984 dev_dbg(module->dev, "Report %s removal\n",
985 jack->jack.jack->id);
986 snd_soc_jack_report(&jack->jack, 0, mask);
987 snd_device_free(comp->card->snd_card,
989 list_del(&jack->list);
994 if (module->dapm_routes) {
995 dev_dbg(comp->dev, "Removing %d routes\n",
996 module->num_dapm_routes);
997 snd_soc_dapm_del_routes(&comp->dapm, module->dapm_routes,
998 module->num_dapm_routes);
1000 if (module->controls) {
1001 dev_dbg(comp->dev, "Removing %d controls\n",
1002 module->num_controls);
1003 /* release control semaphore */
1004 up_write(&card->controls_rwsem);
1005 gbaudio_remove_component_controls(comp, module->controls,
1006 module->num_controls);
1007 down_write(&card->controls_rwsem);
1009 if (module->dapm_widgets) {
1010 dev_dbg(comp->dev, "Removing %d widgets\n",
1011 module->num_dapm_widgets);
1012 gbaudio_dapm_free_controls(&comp->dapm, module->dapm_widgets,
1013 module->num_dapm_widgets);
1016 dev_dbg(comp->dev, "Unregistered %s module\n", module->name);
1018 up_write(&card->controls_rwsem);
1020 EXPORT_SYMBOL(gbaudio_unregister_module);
1023 * component driver ops
1025 static int gbcodec_probe(struct snd_soc_component *comp)
1028 struct gbaudio_codec_info *info;
1029 struct gbaudio_codec_dai *dai;
1031 info = devm_kzalloc(comp->dev, sizeof(*info), GFP_KERNEL);
1035 info->dev = comp->dev;
1036 INIT_LIST_HEAD(&info->module_list);
1037 mutex_init(&info->lock);
1038 INIT_LIST_HEAD(&info->dai_list);
1040 /* init dai_list used to maintain runtime stream info */
1041 for (i = 0; i < ARRAY_SIZE(gbaudio_dai); i++) {
1042 dai = devm_kzalloc(comp->dev, sizeof(*dai), GFP_KERNEL);
1045 dai->id = gbaudio_dai[i].id;
1046 list_add(&dai->list, &info->dai_list);
1049 info->component = comp;
1050 snd_soc_component_set_drvdata(comp, info);
1053 device_init_wakeup(comp->dev, 1);
1057 static void gbcodec_remove(struct snd_soc_component *comp)
1059 /* Empty function for now */
1063 static int gbcodec_write(struct snd_soc_component *comp, unsigned int reg,
1069 static unsigned int gbcodec_read(struct snd_soc_component *comp,
1075 static const struct snd_soc_component_driver soc_codec_dev_gbaudio = {
1076 .probe = gbcodec_probe,
1077 .remove = gbcodec_remove,
1079 .read = gbcodec_read,
1080 .write = gbcodec_write,
1084 static int gbaudio_codec_suspend(struct device *dev)
1086 dev_dbg(dev, "%s: suspend\n", __func__);
1090 static int gbaudio_codec_resume(struct device *dev)
1092 dev_dbg(dev, "%s: resume\n", __func__);
1096 static const struct dev_pm_ops gbaudio_codec_pm_ops = {
1097 .suspend = gbaudio_codec_suspend,
1098 .resume = gbaudio_codec_resume,
1102 static int gbaudio_codec_probe(struct platform_device *pdev)
1104 return devm_snd_soc_register_component(&pdev->dev,
1105 &soc_codec_dev_gbaudio,
1106 gbaudio_dai, ARRAY_SIZE(gbaudio_dai));
1109 static int gbaudio_codec_remove(struct platform_device *pdev)
1114 static const struct of_device_id greybus_asoc_machine_of_match[] = {
1115 { .compatible = "toshiba,apb-dummy-codec", },
1119 static struct platform_driver gbaudio_codec_driver = {
1121 .name = "apb-dummy-codec",
1123 .pm = &gbaudio_codec_pm_ops,
1125 .of_match_table = greybus_asoc_machine_of_match,
1127 .probe = gbaudio_codec_probe,
1128 .remove = gbaudio_codec_remove,
1130 module_platform_driver(gbaudio_codec_driver);
1132 MODULE_DESCRIPTION("APBridge ALSA SoC dummy codec driver");
1133 MODULE_AUTHOR("Vaibhav Agarwal <vaibhav.agarwal@linaro.org>");
1134 MODULE_LICENSE("GPL v2");
1135 MODULE_ALIAS("platform:apb-dummy-codec");