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ALSA: firewire-tascam: pick up data of state from tx isochronous pakcets

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Units of TASCAM FireWire series multiplex PCM frames and state of
control surface into the same tx isochronous packets. One isochronous
packet includes a part of the state in a quadlet data. An image of the
state consists of 64 quadlet data.

This commit demultiplexes the state from tx isochronous packets.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Sakamoto 2018-11-23 13:13:03 +09:00 • committed by Takashi Iwai
parent c12faa2bc5
commit 33b2e1442a
3 changed files with 21 additions and 1 deletions
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2
include/uapi/sound/firewire.h
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@ -88,4 +88,6 @@ struct snd_firewire_get_info {
* Returns -EBUSY if the driver is already streaming.
*/
#define SNDRV_FIREWIRE_TASCAM_STATE_COUNT 64
#endif /* _UAPI_SOUND_FIREWIRE_H_INCLUDED */