Hi,
The following patches adds support for the M-Audio Fast Track C400. This is version 3 of the patch series.
v2: http://mailman.alsa-project.org/pipermail/alsa-devel/2012-November/056750.ht...
This series applies against the latest mainline tree, 3.7-rc7 (HEAD 2844a48706e54ddda4a04269dba4250b42f449de )
* First of all, everything works: mixer controls, effects control, playback and capture (with the correct sampling frequency set). Note that the device doesn't really have a master control or left/right pan. It's just "emulated" in the software.
* To deal with the mixer channel IDs, limited by cmask bit length, I introduced an offset value. This allows to get rid of the shorehorning of the IDs into cmask and device-referencing in the low-level functions. Is this a good approach?
* Audio in/out seems to work good in this series, mainly because the playback is an implicit feedback endpoint, and it is now configured with the capture endpoint as its sync-buddy. Also needed to correct the calculation, because of the different channel numbers between the two endpoints on the C400 (6 playback - implicit feedback, 4 capture).
* The clock sources are still named "Unit 129" (0x81, internal) and "Unit 130" (0x82, SPDIF). I'll fix this later. I also plan to fix the channel names (i.e., instead of "AIn3", use "SPDIF In L").
* I've touched one FTU mixer creation function. I'd appreciate if someone can test this with the FTU to make sure I didn't break something. (I haven't gotten any feedback on that one yet)
Cheers, Eldad
Signed-off-by: Eldad Zack eldad@fogrefinery.com
Eldad Zack (9): usb-audio: replace hardcoded value with const usb-audio: use sender stride for implicit feedback usb-audio: add control index offset usb-audio: skip UAC2 EFFECT_UNIT usb-audio: parameterize FTU effect unit control usb-audio: M-Audio Fast Track C400 quirks table usb-audio: Fast Track C400 mixer ranges usb-audio: Fast Track C400 mixer controls usb-audio: FT C400 sync playback EP to capture EP
sound/usb/endpoint.c | 9 ++- sound/usb/mixer.c | 53 +++++++++++- sound/usb/mixer.h | 1 + sound/usb/mixer_quirks.c | 216 ++++++++++++++++++++++++++++++++++++++++++++-- sound/usb/pcm.c | 15 +++- sound/usb/quirks-table.h | 71 +++++++++++++++ 6 files changed, 351 insertions(+), 14 deletions(-)