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| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2018-11-23 13:13:04 +0900 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-11-23 15:31:10 +0100 |
| commit | 90e8ac5c9d446124a5b43a6f135bf67e060c0c9d (patch) | |
| tree | e2d794e24286fb5df93e98c3ae1772ed662d57d0 /sound/firewire/tascam/tascam.h | |
| parent | 33b2e1442aeaacabb4e29f8adb31469e87599b16 (diff) | |
| download | linux-90e8ac5c9d446124a5b43a6f135bf67e060c0c9d.tar.bz2 | |
ALSA: firewire-tascam: add new hwdep ioctl command to get state image
In a previous commit, ALSA firewire-tascam driver stores state image
from tx isochronous packets. This image includes states of knob, fader,
button of control surface, level of gain/volume of each physical
inputs/outputs, and so on. It's useful for userspace applications to
read whole of the image.
This commit adds a unique ioctl command for ALSA hwdep interface for the
purpose. For actual meaning of each bits in this image, please refer to
discussion in alsa-devel[1].
[1] http://mailman.alsa-project.org/pipermail/alsa-devel/2018-October/140785.html
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire/tascam/tascam.h')
0 files changed, 0 insertions, 0 deletions