From bde8a8f23bbe6db51fa4e81644273af18fef3d7a Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Fri, 25 Apr 2014 22:45:01 +0900 Subject: ALSA: fireworks: Add transaction and some commands Fireworks uses own command and response. This commit adds functionality to transact and adds some commands required for sound card instance and kernel streaming. There are two ways to deliver substance of this transaction: 1.AV/C vendor dependent command for command/response 2.Async transaction to specific addresses for command/response By way 1, I confirm AudioFire12 cannot correctly response to some commands with firmware version 5.0 or later. This is also confirmed by FFADO. So this driver implement way 2. The address for response gives an issue. When this driver allocate own callback function into the address, then no one can allocate its own callback function. This situation is not good for applications in user-land. This issue is solved in later commit. I note there is a command to change the address for response if the device supports. But this driver uses default value. So users should not execute this command as long as hoping this driver works correctly. Signed-off-by: Takashi Sakamoto Signed-off-by: Takashi Iwai --- sound/firewire/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'sound/firewire/Kconfig') diff --git a/sound/firewire/Kconfig b/sound/firewire/Kconfig index 8cd4f1f940b0..0b85ebd60920 100644 --- a/sound/firewire/Kconfig +++ b/sound/firewire/Kconfig @@ -63,6 +63,7 @@ config SND_SCS1X config SND_FIREWORKS tristate "Echo Fireworks board module support" + select SND_FIREWIRE_LIB help Say Y here to include support for FireWire devices based on Echo Digital Audio Fireworks board: -- cgit v1.2.3-58-ga151