[alsa-devel] Audio usb switch to alternate setting 0
k.georgantas at samsung.com
Sun Jan 19 14:50:15 CET 2014
I am trying to control from the client side which Alternate Setting to
use. Basically I would like to be able to switch from Alternate Setting
0 to 1 and vice versa so that I am not receiving any set interface
requests in the meantime. From the audio class 2.0 documentation I
understand that I should be able to do something like this by using the
active alternate setting control, and here comes my main problem.
When I generate an interrupt to the interrupt endpoint I should expect a
GET request which I never see in the host side (hope I am right here).
Here comes the interrupt:
interrupt->bInfo = 0x00;
interrupt->bAttribute = 0x01;
interrupt->wValue = 0x0100;
interrupt->wIndex = 0x0004;
Could you please tell me if such a functionality is supported and how
the interrupt should look like?
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