221 static bool copy_playback_data(struct ua101_stream *stream, struct urb *urb,  in copy_playback_data()  argument
228 	runtime = stream->substream->runtime;  in copy_playback_data()
229 	frame_bytes = stream->frame_bytes;  in copy_playback_data()
230 	source = runtime->dma_area + stream->buffer_pos * frame_bytes;  in copy_playback_data()
231 	if (stream->buffer_pos + frames <= runtime->buffer_size) {  in copy_playback_data()
235 		frames1 = runtime->buffer_size - stream->buffer_pos;  in copy_playback_data()
241 	stream->buffer_pos += frames;  in copy_playback_data()
242 	if (stream->buffer_pos >= runtime->buffer_size)  in copy_playback_data()
243 		stream->buffer_pos -= runtime->buffer_size;  in copy_playback_data()
244 	stream->period_pos += frames;  in copy_playback_data()
245 	if (stream->period_pos >= runtime->period_size) {  in copy_playback_data()
246 		stream->period_pos -= runtime->period_size;  in copy_playback_data()
325 static bool copy_capture_data(struct ua101_stream *stream, struct urb *urb,  in copy_capture_data()  argument
332 	runtime = stream->substream->runtime;  in copy_capture_data()
333 	frame_bytes = stream->frame_bytes;  in copy_capture_data()
334 	dest = runtime->dma_area + stream->buffer_pos * frame_bytes;  in copy_capture_data()
335 	if (stream->buffer_pos + frames <= runtime->buffer_size) {  in copy_capture_data()
339 		frames1 = runtime->buffer_size - stream->buffer_pos;  in copy_capture_data()
346 	stream->buffer_pos += frames;  in copy_capture_data()
347 	if (stream->buffer_pos >= runtime->buffer_size)  in copy_capture_data()
348 		stream->buffer_pos -= runtime->buffer_size;  in copy_capture_data()
349 	stream->period_pos += frames;  in copy_capture_data()
350 	if (stream->period_pos >= runtime->period_size) {  in copy_capture_data()
351 		stream->period_pos -= runtime->period_size;  in copy_capture_data()
360 	struct ua101_stream *stream = &ua->capture;  in capture_urb_complete()  local
374 			stream->frame_bytes;  in capture_urb_complete()
381 		do_period_elapsed = copy_capture_data(stream, urb, frames);  in capture_urb_complete()
420 		snd_pcm_period_elapsed(stream->substream);  in capture_urb_complete()
442 static int submit_stream_urbs(struct ua101 *ua, struct ua101_stream *stream)  in submit_stream_urbs()  argument
446 	for (i = 0; i < stream->queue_length; ++i) {  in submit_stream_urbs()
447 		int err = usb_submit_urb(&stream->urbs[i]->urb, GFP_KERNEL);  in submit_stream_urbs()
457 static void kill_stream_urbs(struct ua101_stream *stream)  in kill_stream_urbs()  argument
461 	for (i = 0; i < stream->queue_length; ++i)  in kill_stream_urbs()
462 		if (stream->urbs[i])  in kill_stream_urbs()
463 			usb_kill_urb(&stream->urbs[i]->urb);  in kill_stream_urbs()
868 						  struct ua101_stream *stream)  in ua101_pcm_pointer()  argument
874 	pos = stream->buffer_pos;  in ua101_pcm_pointer()
1052 static int alloc_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)  in alloc_stream_buffers()  argument
1057 	stream->queue_length = queue_length;  in alloc_stream_buffers()
1058 	stream->queue_length = max(stream->queue_length,  in alloc_stream_buffers()
1060 	stream->queue_length = min(stream->queue_length,  in alloc_stream_buffers()
1069 	remaining_packets = stream->queue_length;  in alloc_stream_buffers()
1070 	packets_per_page = PAGE_SIZE / stream->max_packet_bytes;  in alloc_stream_buffers()
1071 	for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i) {  in alloc_stream_buffers()
1073 		size = packets * stream->max_packet_bytes;  in alloc_stream_buffers()
1074 		stream->buffers[i].addr =  in alloc_stream_buffers()
1076 					   &stream->buffers[i].dma);  in alloc_stream_buffers()
1077 		if (!stream->buffers[i].addr)  in alloc_stream_buffers()
1079 		stream->buffers[i].size = size;  in alloc_stream_buffers()
1091 static void free_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)  in free_stream_buffers()  argument
1095 	for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i)  in free_stream_buffers()
1097 				  stream->buffers[i].size,  in free_stream_buffers()
1098 				  stream->buffers[i].addr,  in free_stream_buffers()
1099 				  stream->buffers[i].dma);  in free_stream_buffers()
1102 static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream,  in alloc_stream_urbs()  argument
1105 	unsigned max_packet_size = stream->max_packet_bytes;  in alloc_stream_urbs()
1109 	for (b = 0; b < ARRAY_SIZE(stream->buffers); ++b) {  in alloc_stream_urbs()
1110 		unsigned int size = stream->buffers[b].size;  in alloc_stream_urbs()
1111 		u8 *addr = stream->buffers[b].addr;  in alloc_stream_urbs()
1112 		dma_addr_t dma = stream->buffers[b].dma;  in alloc_stream_urbs()
1115 			if (u >= stream->queue_length)  in alloc_stream_urbs()
1122 			urb->urb.pipe = stream->usb_pipe;  in alloc_stream_urbs()
1133 			stream->urbs[u++] = urb;  in alloc_stream_urbs()
1139 	if (u == stream->queue_length)  in alloc_stream_urbs()
1146 static void free_stream_urbs(struct ua101_stream *stream)  in free_stream_urbs()  argument
1150 	for (i = 0; i < stream->queue_length; ++i) {  in free_stream_urbs()
1151 		kfree(stream->urbs[i]);  in free_stream_urbs()
1152 		stream->urbs[i] = NULL;  in free_stream_urbs()