196 static void usb6fire_pcm_capture(struct pcm_substream *sub, struct pcm_urb *urb)  in usb6fire_pcm_capture()  argument
202 	struct pcm_runtime *rt = snd_pcm_substream_chip(sub->instance);  in usb6fire_pcm_capture()
203 	struct snd_pcm_runtime *alsa_rt = sub->instance->runtime;  in usb6fire_pcm_capture()
205 	u32 *dest = (u32 *) (alsa_rt->dma_area + sub->dma_off  in usb6fire_pcm_capture()
232 			sub->dma_off++;  in usb6fire_pcm_capture()
233 			sub->period_off++;  in usb6fire_pcm_capture()
235 				sub->dma_off = 0;  in usb6fire_pcm_capture()
243 static void usb6fire_pcm_playback(struct pcm_substream *sub,  in usb6fire_pcm_playback()  argument
249 	struct pcm_runtime *rt = snd_pcm_substream_chip(sub->instance);  in usb6fire_pcm_playback()
250 	struct snd_pcm_runtime *alsa_rt = sub->instance->runtime;  in usb6fire_pcm_playback()
251 	u32 *src = (u32 *) (alsa_rt->dma_area + sub->dma_off  in usb6fire_pcm_playback()
280 			sub->dma_off++;  in usb6fire_pcm_playback()
281 			sub->period_off++;  in usb6fire_pcm_playback()
284 				sub->dma_off = 0;  in usb6fire_pcm_playback()
295 	struct pcm_substream *sub;  in usb6fire_pcm_in_urb_handler()  local
319 	sub = &rt->capture;  in usb6fire_pcm_in_urb_handler()
320 	spin_lock_irqsave(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
321 	if (sub->active) {  in usb6fire_pcm_in_urb_handler()
322 		usb6fire_pcm_capture(sub, in_urb);  in usb6fire_pcm_in_urb_handler()
323 		if (sub->period_off >= sub->instance->runtime->period_size) {  in usb6fire_pcm_in_urb_handler()
324 			sub->period_off %= sub->instance->runtime->period_size;  in usb6fire_pcm_in_urb_handler()
325 			spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
326 			snd_pcm_period_elapsed(sub->instance);  in usb6fire_pcm_in_urb_handler()
328 			spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
330 		spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
344 	sub = &rt->playback;  in usb6fire_pcm_in_urb_handler()
345 	spin_lock_irqsave(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
346 	if (sub->active) {  in usb6fire_pcm_in_urb_handler()
347 		usb6fire_pcm_playback(sub, out_urb);  in usb6fire_pcm_in_urb_handler()
348 		if (sub->period_off >= sub->instance->runtime->period_size) {  in usb6fire_pcm_in_urb_handler()
349 			sub->period_off %= sub->instance->runtime->period_size;  in usb6fire_pcm_in_urb_handler()
350 			spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
351 			snd_pcm_period_elapsed(sub->instance);  in usb6fire_pcm_in_urb_handler()
353 			spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
355 		spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_in_urb_handler()
393 	struct pcm_substream *sub = NULL;  in usb6fire_pcm_open()  local
406 		sub = &rt->playback;  in usb6fire_pcm_open()
411 		sub = &rt->capture;  in usb6fire_pcm_open()
414 	if (!sub) {  in usb6fire_pcm_open()
420 	sub->instance = alsa_sub;  in usb6fire_pcm_open()
421 	sub->active = false;  in usb6fire_pcm_open()
429 	struct pcm_substream *sub = usb6fire_pcm_get_substream(alsa_sub);  in usb6fire_pcm_close()  local
436 	if (sub) {  in usb6fire_pcm_close()
438 		spin_lock_irqsave(&sub->lock, flags);  in usb6fire_pcm_close()
439 		sub->instance = NULL;  in usb6fire_pcm_close()
440 		sub->active = false;  in usb6fire_pcm_close()
441 		spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_close()
468 	struct pcm_substream *sub = usb6fire_pcm_get_substream(alsa_sub);  in usb6fire_pcm_prepare()  local
474 	if (!sub)  in usb6fire_pcm_prepare()
478 	sub->dma_off = 0;  in usb6fire_pcm_prepare()
479 	sub->period_off = 0;  in usb6fire_pcm_prepare()
512 	struct pcm_substream *sub = usb6fire_pcm_get_substream(alsa_sub);  in usb6fire_pcm_trigger()  local
518 	if (!sub)  in usb6fire_pcm_trigger()
524 		spin_lock_irqsave(&sub->lock, flags);  in usb6fire_pcm_trigger()
525 		sub->active = true;  in usb6fire_pcm_trigger()
526 		spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_trigger()
531 		spin_lock_irqsave(&sub->lock, flags);  in usb6fire_pcm_trigger()
532 		sub->active = false;  in usb6fire_pcm_trigger()
533 		spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_trigger()
544 	struct pcm_substream *sub = usb6fire_pcm_get_substream(alsa_sub);  in usb6fire_pcm_pointer()  local
549 	if (rt->panic || !sub)  in usb6fire_pcm_pointer()
552 	spin_lock_irqsave(&sub->lock, flags);  in usb6fire_pcm_pointer()
553 	ret = sub->dma_off;  in usb6fire_pcm_pointer()
554 	spin_unlock_irqrestore(&sub->lock, flags);  in usb6fire_pcm_pointer()