ALSA: virtio: PCM substream operators
Introduce the operators required for the operation of substreams.
Signed-off-by: Anton Yakovlev <anton.yakovlev@opensynergy.com>
Link: https://lore.kernel.org/r/20210302164709.3142702-7-anton.yakovlev@opensynergy.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/virtio/virtio_pcm.h b/sound/virtio/virtio_pcm.h
index 6722f11..efd0228 100644
--- a/sound/virtio/virtio_pcm.h
+++ b/sound/virtio/virtio_pcm.h
@@ -29,6 +29,8 @@ struct virtio_pcm_msg;
* @hw_ptr: Substream hardware pointer value in bytes [0 ... buffer_bytes).
* @xfer_enabled: Data transfer state (0 - off, 1 - on).
* @xfer_xrun: Data underflow/overflow state (0 - no xrun, 1 - xrun).
+ * @stopped: True if the substream is stopped and must be released on the device
+ * side.
* @msgs: Allocated I/O messages.
* @nmsgs: Number of allocated I/O messages.
* @msg_last_enqueued: Index of the last I/O message added to the virtqueue.
@@ -49,6 +51,7 @@ struct virtio_pcm_substream {
size_t hw_ptr;
bool xfer_enabled;
bool xfer_xrun;
+ bool stopped;
struct virtio_pcm_msg **msgs;
unsigned int nmsgs;
int msg_last_enqueued;
@@ -80,6 +83,8 @@ struct virtio_pcm {
struct virtio_pcm_stream streams[SNDRV_PCM_STREAM_LAST + 1];
};
+extern const struct snd_pcm_ops virtsnd_pcm_ops;
+
int virtsnd_pcm_validate(struct virtio_device *vdev);
int virtsnd_pcm_parse_cfg(struct virtio_snd *snd);