1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (c) 2022-2025 Qualcomm Innovation Center, Inc. All rights reserved.
8 #include <linux/dma-mapping.h>
9 #include <linux/dma-map-ops.h>
23 #include <sound/soc-usb.h>
25 #include <dt-bindings/sound/qcom,q6afe.h>
28 #include "q6dsp-lpass-ports.h"
35 	struct snd_soc_usb *usb;  member
39 	/* Protects against operations between SOC USB and ASoC */
49 	{"USB Playback", NULL, "USB_RX_BE"},
56 	struct q6usb_port_data *data = dev_get_drvdata(dai->dev);  in q6usb_hw_params()
57 	struct snd_soc_pcm_runtime *rtd = substream->private_data;  in q6usb_hw_params()
59 	int direction = substream->stream;  in q6usb_hw_params()
62 	int ret = -EINVAL;  in q6usb_hw_params()
64 	mutex_lock(&data->mutex);  in q6usb_hw_params()
67 	if (list_empty(&data->devices))  in q6usb_hw_params()
70 	sdev = list_last_entry(&data->devices, struct snd_soc_usb_device, list);  in q6usb_hw_params()
72 	ret = snd_soc_usb_find_supported_format(sdev->chip_idx, params, direction);  in q6usb_hw_params()
76 	q6usb_afe = q6afe_port_get_from_id(cpu_dai->dev, USB_RX);  in q6usb_hw_params()
82 	/* Notify audio DSP about the devices being offloaded */  in q6usb_hw_params()
83 	ret = afe_port_send_usb_dev_param(q6usb_afe, sdev->card_idx,  in q6usb_hw_params()
84 					  sdev->ppcm_idx[sdev->num_playback - 1]);  in q6usb_hw_params()
87 	mutex_unlock(&data->mutex);  in q6usb_hw_params()
99 			.stream_name = "USB BE RX",
124 	int id = args->args[0];  in q6usb_audio_ports_of_xlate_dai_name()
125 	int ret = -EINVAL;  in q6usb_audio_ports_of_xlate_dai_name()
144 	for_each_card_rtds(w->dapm->card, rtd) {  in q6usb_get_pcm_id_from_widget()
150 		if (dai->stream[0].widget == w)  in q6usb_get_pcm_id_from_widget()
151 			return rtd->id;  in q6usb_get_pcm_id_from_widget()
154 	return -1;  in q6usb_get_pcm_id_from_widget()
161 	/* Checks to ensure USB path is enabled/connected */  in q6usb_usb_mixer_enabled()
163 		if (!strcmp(p->sink->name, "USB Mixer") && p->connect)  in q6usb_usb_mixer_enabled()
178 	 *    MultiMedia* <-> MM_DL* <-> USB Mixer*  in q6usb_get_pcm_id()
180 	for_each_card_widgets(component->card, w) {  in q6usb_get_pcm_id()
181 		if (!strncmp(w->name, "MultiMedia", 10)) {  in q6usb_get_pcm_id()
184 			 * the USB BE is enabled.  The sink widget is responsible to  in q6usb_get_pcm_id()
185 			 * link with the USB mixers.  in q6usb_get_pcm_id()
188 				if (q6usb_usb_mixer_enabled(p->sink)) {  in q6usb_get_pcm_id()
196 	return -1;  in q6usb_get_pcm_id()
203 	struct q6usb_port_data *data = dev_get_drvdata(component->dev);  in q6usb_update_offload_route()
206 	int idx = -1;  in q6usb_update_offload_route()  local
208 	mutex_lock(&data->mutex);  in q6usb_update_offload_route()
210 	if (list_empty(&data->devices) ||  in q6usb_update_offload_route()
212 		ret = -ENODEV;  in q6usb_update_offload_route()
216 	sdev = list_last_entry(&data->devices, struct snd_soc_usb_device, list);  in q6usb_update_offload_route()
222 	if (card == sdev->card_idx &&  in q6usb_update_offload_route()
223 	    pcm == sdev->ppcm_idx[sdev->num_playback - 1]) {  in q6usb_update_offload_route()
224 		idx = path == SND_SOC_USB_KCTL_CARD_ROUTE ?  in q6usb_update_offload_route()
225 				component->card->snd_card->number :  in q6usb_update_offload_route()
230 	route[0] = idx;  in q6usb_update_offload_route()
231 	mutex_unlock(&data->mutex);  in q6usb_update_offload_route()
236 static int q6usb_alsa_connection_cb(struct snd_soc_usb *usb,  in q6usb_alsa_connection_cb()  argument
241 	if (!usb->component)  in q6usb_alsa_connection_cb()
242 		return -ENODEV;  in q6usb_alsa_connection_cb()
244 	data = dev_get_drvdata(usb->component->dev);  in q6usb_alsa_connection_cb()
246 	mutex_lock(&data->mutex);  in q6usb_alsa_connection_cb()
248 		if (data->hs_jack)  in q6usb_alsa_connection_cb()
249 			snd_jack_report(data->hs_jack->jack, SND_JACK_USB);  in q6usb_alsa_connection_cb()
251 		/* Selects the latest USB headset plugged in for offloading */  in q6usb_alsa_connection_cb()
252 		list_add_tail(&sdev->list, &data->devices);  in q6usb_alsa_connection_cb()
254 		list_del(&sdev->list);  in q6usb_alsa_connection_cb()
256 		if (data->hs_jack)  in q6usb_alsa_connection_cb()
257 			snd_jack_report(data->hs_jack->jack, 0);  in q6usb_alsa_connection_cb()
259 	mutex_unlock(&data->mutex);  in q6usb_alsa_connection_cb()
267 	if (!data->hs_jack)  in q6usb_component_disable_jack()
270 	snd_jack_report(data->hs_jack->jack, 0);  in q6usb_component_disable_jack()
271 	data->hs_jack = NULL;  in q6usb_component_disable_jack()
277 	snd_jack_report(jack->jack, !list_empty(&data->devices) ? SND_JACK_USB : 0);  in q6usb_component_enable_jack()
278 	data->hs_jack = jack;  in q6usb_component_enable_jack()
284 	struct q6usb_port_data *data = dev_get_drvdata(component->dev);  in q6usb_component_set_jack()
286 	mutex_lock(&data->mutex);  in q6usb_component_set_jack()
291 	mutex_unlock(&data->mutex);  in q6usb_component_set_jack()
303 	auxdev->dev.parent = data->priv.dev;  in q6usb_dai_add_aux_device()
304 	auxdev->dev.release = q6usb_dai_aux_release;  in q6usb_dai_add_aux_device()
305 	auxdev->name = "qc-usb-audio-offload";  in q6usb_dai_add_aux_device()
320 	struct q6usb_port_data *data = dev_get_drvdata(component->dev);  in q6usb_component_probe()
321 	struct snd_soc_usb *usb;  in q6usb_component_probe()  local
324 	/* Add the QC USB SND aux device */  in q6usb_component_probe()
325 	ret = q6usb_dai_add_aux_device(data, &data->uauxdev);  in q6usb_component_probe()
329 	usb = snd_soc_usb_allocate_port(component, &data->priv);  in q6usb_component_probe()
330 	if (IS_ERR(usb))  in q6usb_component_probe()
331 		return -ENOMEM;  in q6usb_component_probe()
333 	usb->connection_status_cb = q6usb_alsa_connection_cb;  in q6usb_component_probe()
334 	usb->update_offload_route_info = q6usb_update_offload_route;  in q6usb_component_probe()
336 	snd_soc_usb_add_port(usb);  in q6usb_component_probe()
337 	data->usb = usb;  in q6usb_component_probe()
344 	struct q6usb_port_data *data = dev_get_drvdata(component->dev);  in q6usb_component_remove()
346 	snd_soc_usb_remove_port(data->usb);  in q6usb_component_remove()
347 	auxiliary_device_delete(&data->uauxdev);  in q6usb_component_remove()
348 	auxiliary_device_uninit(&data->uauxdev);  in q6usb_component_remove()
349 	snd_soc_usb_free_port(data->usb);  in q6usb_component_remove()
356 	.name = "q6usb-dai-component",
366 	struct device_node *node = pdev->dev.of_node;  in q6usb_dai_dev_probe()
368 	struct device *dev = &pdev->dev;  in q6usb_dai_dev_probe()
374 		return -ENOMEM;  in q6usb_dai_dev_probe()
376 	ret = of_property_read_u16(node, "qcom,usb-audio-intr-idx",  in q6usb_dai_dev_probe()
377 				   &data->priv.intr_num);  in q6usb_dai_dev_probe()
379 		dev_err(&pdev->dev, "failed to read intr idx.\n");  in q6usb_dai_dev_probe()
385 		data->priv.sid = args.args[0] & Q6_USB_SID_MASK;  in q6usb_dai_dev_probe()
387 	ret = devm_mutex_init(dev, &data->mutex);  in q6usb_dai_dev_probe()
391 	data->priv.domain = iommu_get_domain_for_dev(&pdev->dev);  in q6usb_dai_dev_probe()
393 	data->priv.dev = dev;  in q6usb_dai_dev_probe()
394 	INIT_LIST_HEAD(&data->devices);  in q6usb_dai_dev_probe()
409 		.name = "q6usb-dai",
420 MODULE_DESCRIPTION("Q6 USB backend dai driver");