• Takashi Sakamoto's avatar
    ALSA: fireworks: Add transaction and some commands · bde8a8f2
    Takashi Sakamoto authored
    Fireworks uses own command and response. This commit adds functionality to
    transact and adds some commands required for sound card instance and kernel
    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: default avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Kconfig 2.16 KB