Lines Matching +full:no +full:- +full:wp

1 // SPDX-License-Identifier: GPL-2.0-only
3  * HD-audio core bus driver
24  * snd_hdac_bus_init - initialize a HD-audio bas bus
35 	bus->dev = dev;
37 		bus->ops = ops;
39 		bus->ops = &default_ops;
40 	bus->dma_type = SNDRV_DMA_TYPE_DEV;
41 	INIT_LIST_HEAD(&bus->stream_list);
42 	INIT_LIST_HEAD(&bus->codec_list);
43 	INIT_WORK(&bus->unsol_work, snd_hdac_bus_process_unsol_events);
44 	spin_lock_init(&bus->reg_lock);
45 	mutex_init(&bus->cmd_mutex);
46 	mutex_init(&bus->lock);
47 	INIT_LIST_HEAD(&bus->hlink_list);
48 	init_waitqueue_head(&bus->rirb_wq);
49 	bus->irq = -1;
60 	bus->sdo_limit = 8;
67  * snd_hdac_bus_exit - clean up a HD-audio bas bus
72 	WARN_ON(!list_empty(&bus->stream_list));
73 	WARN_ON(!list_empty(&bus->codec_list));
74 	cancel_work_sync(&bus->unsol_work);
79  * snd_hdac_bus_exec_verb - execute a HD-audio verb on the given bus
82  * @cmd: HD-audio encoded verb
90 	guard(mutex)(&bus->cmd_mutex);
95  * snd_hdac_bus_exec_verb_unlocked - unlocked version
98  * @cmd: HD-audio encoded verb
110 		return -EINVAL;
113 		*res = -1;
114 	else if (bus->sync_write)
118 		err = bus->ops->command(bus, cmd);
119 		if (err != -EAGAIN)
122 		err = bus->ops->get_response(bus, addr, &tmp);
127 		err = bus->ops->get_response(bus, addr, res);
135  * snd_hdac_bus_queue_event - add an unsolicited event to queue
146 	unsigned int wp;
152 	wp = (bus->unsol_wp + 1) % HDA_UNSOL_QUEUE_SIZE;
153 	bus->unsol_wp = wp;
155 	wp <<= 1;
156 	bus->unsol_queue[wp] = res;
157 	bus->unsol_queue[wp + 1] = res_ex;
159 	schedule_work(&bus->unsol_work);
172 	spin_lock_irq(&bus->reg_lock);
173 	while (bus->unsol_rp != bus->unsol_wp) {
174 		rp = (bus->unsol_rp + 1) % HDA_UNSOL_QUEUE_SIZE;
175 		bus->unsol_rp = rp;
177 		res = bus->unsol_queue[rp];
178 		caddr = bus->unsol_queue[rp + 1];
179 		if (!(caddr & (1 << 4))) /* no unsolicited event? */
181 		codec = bus->caddr_tbl[caddr & 0x0f];
182 		if (!codec || !codec->registered)
184 		spin_unlock_irq(&bus->reg_lock);
185 		drv = drv_to_hdac_driver(codec->dev.driver);
186 		if (drv->unsol_event)
187 			drv->unsol_event(codec, res);
188 		spin_lock_irq(&bus->reg_lock);
190 	spin_unlock_irq(&bus->reg_lock);
194  * snd_hdac_bus_add_device - Add a codec to bus
204 	if (bus->caddr_tbl[codec->addr]) {
205 		dev_err(bus->dev, "address 0x%x is already occupied\n",
206 			codec->addr);
207 		return -EBUSY;
210 	list_add_tail(&codec->list, &bus->codec_list);
211 	bus->caddr_tbl[codec->addr] = codec;
212 	set_bit(codec->addr, &bus->codec_powered);
213 	bus->num_codecs++;
218  * snd_hdac_bus_remove_device - Remove a codec from bus
225 	WARN_ON(bus != codec->bus);
226 	if (list_empty(&codec->list))
228 	list_del_init(&codec->list);
229 	bus->caddr_tbl[codec->addr] = NULL;
230 	clear_bit(codec->addr, &bus->codec_powered);
231 	bus->num_codecs--;
232 	flush_work(&bus->unsol_work);
267 	struct hdac_bus *bus = codec->bus;
269 	if (bus->ops->link_power)
270 		bus->ops->link_power(codec, true);
278 	struct hdac_bus *bus = codec->bus;
280 	if (bus->ops->link_power)
281 		bus->ops->link_power(codec, false);