usb/hiface/pcm.c

112 static int hiface_pcm_set_rate(struct pcm_runtime *rt, unsigned int rate)
114 	struct usb_device *device = rt->chip->dev;
172 	struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
173 	struct device *device = &rt->chip->dev->dev;
176 		return &rt->playback;
183 static void hiface_pcm_stream_stop(struct pcm_runtime *rt)
187 	if (rt->stream_state != STREAM_DISABLED) {
188 		rt->stream_state = STREAM_STOPPING;
192 					&rt->out_urbs[i].submitted, 100);
195 					&rt->out_urbs[i].submitted);
196 			usb_kill_urb(&rt->out_urbs[i].instance);
199 		rt->stream_state = STREAM_DISABLED;
204 static int hiface_pcm_stream_start(struct pcm_runtime *rt)
209 	if (rt->stream_state == STREAM_DISABLED) {
212 		rt->panic = false;
215 		rt->stream_state = STREAM_STARTING;
217 			memset(rt->out_urbs[i].buffer, 0, PCM_PACKET_SIZE);
218 			usb_anchor_urb(&rt->out_urbs[i].instance,
219 				       &rt->out_urbs[i].submitted);
220 			ret = usb_submit_urb(&rt->out_urbs[i].instance,
223 				hiface_pcm_stream_stop(rt);
229 		wait_event_timeout(rt->stream_wait_queue, rt->stream_wait_cond,
231 		if (rt->stream_wait_cond) {
232 			struct device *device = &rt->chip->dev->dev;
235 			rt->stream_state = STREAM_RUNNING;
237 			hiface_pcm_stream_stop(rt);
305 	struct pcm_runtime *rt = out_urb->chip->pcm;
311 	if (rt->panic || rt->stream_state == STREAM_STOPPING)
321 	if (rt->stream_state == STREAM_STARTING) {
322 		rt->stream_wait_cond = true;
323 		wake_up(&rt->stream_wait_queue);
327 	sub = &rt->playback;
346 	rt->panic = true;
351 	struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
356 	if (rt->panic)
359 	mutex_lock(&rt->stream_mutex);
363 		sub = &rt->playback;
366 		struct device *device = &rt->chip->dev->dev;
367 		mutex_unlock(&rt->stream_mutex);
372 	if (rt->extra_freq) {
381 			mutex_unlock(&rt->stream_mutex);
388 	mutex_unlock(&rt->stream_mutex);
394 	struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
398 	if (rt->panic)
401 	mutex_lock(&rt->stream_mutex);
403 		hiface_pcm_stream_stop(rt);
412 	mutex_unlock(&rt->stream_mutex);
418 	struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
423 	if (rt->panic)
428 	mutex_lock(&rt->stream_mutex);
430 	hiface_pcm_stream_stop(rt);
435 	if (rt->stream_state == STREAM_DISABLED) {
437 		ret = hiface_pcm_set_rate(rt, alsa_rt->rate);
439 			mutex_unlock(&rt->stream_mutex);
442 		ret = hiface_pcm_stream_start(rt);
444 			mutex_unlock(&rt->stream_mutex);
448 	mutex_unlock(&rt->stream_mutex);
455 	struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
457 	if (rt->panic)
485 	struct pcm_runtime *rt = snd_pcm_substream_chip(alsa_sub);
489 	if (rt->panic || !sub)
530 	struct pcm_runtime *rt = chip->pcm;
532 	if (rt) {
533 		rt->panic = true;
535 		mutex_lock(&rt->stream_mutex);
536 		hiface_pcm_stream_stop(rt);
537 		mutex_unlock(&rt->stream_mutex);
543 	struct pcm_runtime *rt = chip->pcm;
547 		kfree(rt->out_urbs[i].buffer);
555 	struct pcm_runtime *rt = pcm->private_data;
557 	if (rt)
558 		hiface_pcm_destroy(rt->chip);
566 	struct pcm_runtime *rt;
568 	rt = kzalloc(sizeof(*rt), GFP_KERNEL);
569 	if (!rt)
572 	rt->chip = chip;
573 	rt->stream_state = STREAM_DISABLED;
575 		rt->extra_freq = 1;
577 	init_waitqueue_head(&rt->stream_wait_queue);
578 	mutex_init(&rt->stream_mutex);
579 	spin_lock_init(&rt->playback.lock);
582 		ret = hiface_pcm_init_urb(&rt->out_urbs[i], chip, OUT_EP,
594 	pcm->private_data = rt;
602 	rt->instance = pcm;
604 	chip->pcm = rt;
609 		kfree(rt->out_urbs[i].buffer);
610 	kfree(rt);