ALSA: bebob: distinguish M-Audio ProFire Lightbridge quirk
authorTakashi Sakamoto <o-takashi@sakamocchi.jp>
Mon, 24 May 2021 03:13:46 +0000 (12:13 +0900)
committerTakashi Iwai <tiwai@suse.de>
Tue, 25 May 2021 06:54:38 +0000 (08:54 +0200)
commit5ec85c198eff077e99bc5ff615eb9618004962e2
tree322ab5f142548fb154554042816f0677536cc5aa
parent266807f94e401fcf0631c0f52d49495ff448b8ab
ALSA: bebob: distinguish M-Audio ProFire Lightbridge quirk

In former commit, ALSA IEC 61883-1/6 packet streaming engine drops
initial tx packets till the packet includes any event. This allows ALSA
bebob driver not to give option to skip initial packet since the engine
does drop the initial packet.

However, M-Audio ProFire Lightbridge has a quirk to stop packet
transmission after start multiplexing event to the packet. After several
thousands cycles, it restart packet transmission again.

This commit specializes the usage of initial skip option for the model.
Additionally, this commit expands timeout enough to wait processing
content of tx packet.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Link: https://lore.kernel.org/r/20210524031346.50539-5-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/firewire/bebob/bebob.c
sound/firewire/bebob/bebob.h
sound/firewire/bebob/bebob_stream.c