tree fa16772e9c438408d90c4239b7cfe3be4cc67c04
parent afb8e2daa031b39900488515a73c0998491ac4b8
author Takashi Sakamoto <o-takashi@sakamocchi.jp> 1542946387 +0900
committer Takashi Iwai <tiwai@suse.de> 1542983475 +0100

ALSA: firewire-tascam: notify events of change of state for userspace applications

In former commits, ALSA firewire-tascam driver queues events to notify
change of state of control surface to userspace via ALSA hwdep
interface.

This commit implements actual notification of the events. The events are
not governed by real time, thus no need to care underrun.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>