core/seq/seq_virmidi.c

72 static int snd_virmidi_dev_receive_event(struct snd_virmidi_dev *rdev,
81 		read_lock(&rdev->filelist_lock);
83 		down_read(&rdev->filelist_sem);
84 	list_for_each_entry(vmidi, &rdev->filelist, list) {
99 		read_unlock(&rdev->filelist_lock);
101 		up_read(&rdev->filelist_sem);
112 	struct snd_virmidi_dev *rdev;
114 	rdev = private_data;
115 	if (!(rdev->flags & SNDRV_VIRMIDI_USE))
117 	return snd_virmidi_dev_receive_event(rdev, ev, atomic);
145 	    !(vmidi->rdev->flags & SNDRV_VIRMIDI_SUBSCRIBE)) {
186 	struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
198 	vmidi->seq_mode = rdev->seq_mode;
199 	vmidi->client = rdev->client;
200 	vmidi->port = rdev->port;
202 	scoped_guard(rwsem_write, &rdev->filelist_sem) {
203 		guard(write_lock_irq)(&rdev->filelist_lock);
204 		list_add_tail(&vmidi->list, &rdev->filelist);
206 	vmidi->rdev = rdev;
215 	struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
227 	vmidi->seq_mode = rdev->seq_mode;
228 	vmidi->client = rdev->client;
229 	vmidi->port = rdev->port;
231 	vmidi->rdev = rdev;
242 	struct snd_virmidi_dev *rdev = substream->rmidi->private_data;
245 	scoped_guard(rwsem_write, &rdev->filelist_sem) {
246 		guard(write_lock_irq)(&rdev->filelist_lock);
286 	struct snd_virmidi_dev *rdev;
288 	rdev = private_data;
289 	if (!try_module_get(rdev->card->module))
291 	rdev->flags |= SNDRV_VIRMIDI_SUBSCRIBE;
301 	struct snd_virmidi_dev *rdev;
303 	rdev = private_data;
304 	rdev->flags &= ~SNDRV_VIRMIDI_SUBSCRIBE;
305 	module_put(rdev->card->module);
316 	struct snd_virmidi_dev *rdev;
318 	rdev = private_data;
319 	if (!try_module_get(rdev->card->module))
321 	rdev->flags |= SNDRV_VIRMIDI_USE;
331 	struct snd_virmidi_dev *rdev;
333 	rdev = private_data;
334 	rdev->flags &= ~SNDRV_VIRMIDI_USE;
335 	module_put(rdev->card->module);
360 static int snd_virmidi_dev_attach_seq(struct snd_virmidi_dev *rdev)
367 	if (rdev->client >= 0)
374 	client = snd_seq_create_kernel_client(rdev->card, rdev->device,
375 					      "%s %d-%d", rdev->rmidi->name,
376 					      rdev->card->number,
377 					      rdev->device);
380 	rdev->client = client;
384 	sprintf(pinfo->name, "VirMIDI %d-%d", rdev->card->number, rdev->device);
396 	pcallbacks.private_data = rdev;
406 		rdev->client = -1;
410 	rdev->port = pinfo->addr.port;
418 static void snd_virmidi_dev_detach_seq(struct snd_virmidi_dev *rdev)
420 	if (rdev->client >= 0) {
421 		snd_seq_delete_kernel_client(rdev->client);
422 		rdev->client = -1;
431 	struct snd_virmidi_dev *rdev = rmidi->private_data;
434 	switch (rdev->seq_mode) {
436 		err = snd_virmidi_dev_attach_seq(rdev);
441 		if (rdev->client == 0)
446 		pr_err("ALSA: seq_virmidi: seq_mode is not set: %d\n", rdev->seq_mode);
458 	struct snd_virmidi_dev *rdev = rmidi->private_data;
460 	if (rdev->seq_mode == SNDRV_VIRMIDI_SEQ_DISPATCH)
461 		snd_virmidi_dev_detach_seq(rdev);
478 	struct snd_virmidi_dev *rdev = rmidi->private_data;
479 	kfree(rdev);
490 	struct snd_virmidi_dev *rdev;
501 	rdev = kzalloc(sizeof(*rdev), GFP_KERNEL);
502 	if (rdev == NULL) {
506 	rdev->card = card;
507 	rdev->rmidi = rmidi;
508 	rdev->device = device;
509 	rdev->client = -1;
510 	init_rwsem(&rdev->filelist_sem);
511 	rwlock_init(&rdev->filelist_lock);
512 	INIT_LIST_HEAD(&rdev->filelist);
513 	rdev->seq_mode = SNDRV_VIRMIDI_SEQ_DISPATCH;
514 	rmidi->private_data = rdev;