Lines Matching defs:vss

122  * @vss: VirtIO PCM substream.
132 int virtsnd_pcm_msg_alloc(struct virtio_pcm_substream *vss,
135 	struct snd_pcm_runtime *runtime = vss->substream->runtime;
138 	vss->msgs = kcalloc(periods, sizeof(*vss->msgs), GFP_KERNEL);
139 	if (!vss->msgs)
142 	vss->nmsgs = periods;
153 		msg->substream = vss;
161 		vss->msgs[i] = msg;
169  * @vss: VirtIO PCM substream.
173 void virtsnd_pcm_msg_free(struct virtio_pcm_substream *vss)
177 	for (i = 0; vss->msgs && i < vss->nmsgs; ++i)
178 		kfree(vss->msgs[i]);
179 	kfree(vss->msgs);
181 	vss->msgs = NULL;
182 	vss->nmsgs = 0;
187  * @vss: VirtIO PCM substream.
200 int virtsnd_pcm_msg_send(struct virtio_pcm_substream *vss, unsigned long offset,
203 	struct virtio_snd *snd = vss->snd;
205 	struct virtqueue *vqueue = virtsnd_pcm_queue(vss)->vqueue;
206 	unsigned long period_bytes = snd_pcm_lib_period_bytes(vss->substream);
208 	unsigned int msg_count = vss->msg_count;
216 		struct virtio_pcm_msg *msg = vss->msgs[i];
230 			msg->xfer.stream_id = cpu_to_le32(vss->sid);
233 			if (vss->direction == SNDRV_PCM_STREAM_PLAYBACK)
243 					vss->sid);
247 			vss->msg_count++;
254 	if (msg_count == vss->msg_count)
257 	if (!(vss->features & (1U << VIRTIO_SND_PCM_F_MSG_POLLING)))
268  * @vss: VirtIO substream.
273 unsigned int virtsnd_pcm_msg_pending_num(struct virtio_pcm_substream *vss)
275 	guard(spinlock_irqsave)(&vss->lock);
276 	return vss->msg_count;
298 	struct virtio_pcm_substream *vss = msg->substream;
305 	guard(spinlock)(&vss->lock);
310 	if (vss->direction == SNDRV_PCM_STREAM_PLAYBACK ||
312 		vss->hw_ptr += msg->length;
314 		vss->hw_ptr += written_bytes - sizeof(msg->status);
316 	if (vss->hw_ptr >= vss->buffer_bytes)
317 		vss->hw_ptr -= vss->buffer_bytes;
321 	vss->xfer_xrun = false;
322 	vss->msg_count--;
324 	if (vss->xfer_enabled) {
325 		struct snd_pcm_runtime *runtime = vss->substream->runtime;
331 		schedule_work(&vss->elapsed_period);
332 	} else if (!vss->msg_count) {
333 		wake_up_all(&vss->msg_empty);
385  * @vss: VirtIO PCM substream.
393 virtsnd_pcm_ctl_msg_alloc(struct virtio_pcm_substream *vss,
411 		hdr->stream_id = cpu_to_le32(vss->sid);