1 // SPDX-License-Identifier: GPL-2.0+
3  * virtio-snd: Virtio sound device
16  * receive notifications about a plugged in/out device.
23  * struct virtio_jack - VirtIO jack.
26  * @features: Jack virtio feature bit map (1 << VIRTIO_SND_JACK_F_XXX).
43  * virtsnd_jack_get_label() - Get the name string for the jack.
44  * @vjack: VirtIO jack.
54 	unsigned int defconf = vjack->defconf;  in virtsnd_jack_get_label()
55 	unsigned int device =  in virtsnd_jack_get_label()  local
60 	switch (device) {  in virtsnd_jack_get_label()
91  * virtsnd_jack_get_type() - Get the type for the jack.
92  * @vjack: VirtIO jack.
102 	unsigned int defconf = vjack->defconf;  in virtsnd_jack_get_type()
103 	unsigned int device =  in virtsnd_jack_get_type()  local
106 	switch (device) {  in virtsnd_jack_get_type()
123  * virtsnd_jack_parse_cfg() - Parse the jack configuration.
124  * @snd: VirtIO sound device.
126  * This function is called during initial device initialization.
129  * Return: 0 on success, -errno on failure.
133 	struct virtio_device *vdev = snd->vdev;  in virtsnd_jack_parse_cfg()
138 	virtio_cread_le(vdev, struct virtio_snd_config, jacks, &snd->njacks);  in virtsnd_jack_parse_cfg()
139 	if (!snd->njacks)  in virtsnd_jack_parse_cfg()
142 	snd->jacks = devm_kcalloc(&vdev->dev, snd->njacks, sizeof(*snd->jacks),  in virtsnd_jack_parse_cfg()
144 	if (!snd->jacks)  in virtsnd_jack_parse_cfg()
145 		return -ENOMEM;  in virtsnd_jack_parse_cfg()
147 	info = kcalloc(snd->njacks, sizeof(*info), GFP_KERNEL);  in virtsnd_jack_parse_cfg()
149 		return -ENOMEM;  in virtsnd_jack_parse_cfg()
151 	rc = virtsnd_ctl_query_info(snd, VIRTIO_SND_R_JACK_INFO, 0, snd->njacks,  in virtsnd_jack_parse_cfg()
156 	for (i = 0; i < snd->njacks; ++i) {  in virtsnd_jack_parse_cfg()
157 		struct virtio_jack *vjack = &snd->jacks[i];  in virtsnd_jack_parse_cfg()
159 		vjack->nid = le32_to_cpu(info[i].hdr.hda_fn_nid);  in virtsnd_jack_parse_cfg()
160 		vjack->features = le32_to_cpu(info[i].features);  in virtsnd_jack_parse_cfg()
161 		vjack->defconf = le32_to_cpu(info[i].hda_reg_defconf);  in virtsnd_jack_parse_cfg()
162 		vjack->caps = le32_to_cpu(info[i].hda_reg_caps);  in virtsnd_jack_parse_cfg()
163 		vjack->connected = info[i].connected;  in virtsnd_jack_parse_cfg()
173  * virtsnd_jack_build_devs() - Build ALSA controls for jacks.
174  * @snd: VirtIO sound device.
177  * Return: 0 on success, -errno on failure.
184 	for (i = 0; i < snd->njacks; ++i) {  in virtsnd_jack_build_devs()
185 		struct virtio_jack *vjack = &snd->jacks[i];  in virtsnd_jack_build_devs()
187 		vjack->type = virtsnd_jack_get_type(vjack);  in virtsnd_jack_build_devs()
189 		rc = snd_jack_new(snd->card, virtsnd_jack_get_label(vjack),  in virtsnd_jack_build_devs()
190 				  vjack->type, &vjack->jack, true, true);  in virtsnd_jack_build_devs()
194 		if (vjack->jack)  in virtsnd_jack_build_devs()
195 			vjack->jack->private_data = vjack;  in virtsnd_jack_build_devs()
197 		snd_jack_report(vjack->jack,  in virtsnd_jack_build_devs()
198 				vjack->connected ? vjack->type : 0);  in virtsnd_jack_build_devs()
205  * virtsnd_jack_event() - Handle the jack event notification.
206  * @snd: VirtIO sound device.
207  * @event: VirtIO sound event.
213 	u32 jack_id = le32_to_cpu(event->data);  in virtsnd_jack_event()
216 	if (jack_id >= snd->njacks)  in virtsnd_jack_event()
219 	vjack = &snd->jacks[jack_id];  in virtsnd_jack_event()
221 	switch (le32_to_cpu(event->hdr.code)) {  in virtsnd_jack_event()
223 		vjack->connected = true;  in virtsnd_jack_event()
226 		vjack->connected = false;  in virtsnd_jack_event()
232 	snd_jack_report(vjack->jack, vjack->connected ? vjack->type : 0);  in virtsnd_jack_event()