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Commit dae03586 authored by Andrzej Pietrasiewicz's avatar Andrzej Pietrasiewicz Committed by Felipe Balbi
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Documentation: usb: UAC1 function testing 



Summary of how to test UAC1 function of USB gadget.

Signed-off-by: default avatarAndrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 480a912b

Documentation/usb/gadget-testing.txt

+27 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ provided by gadgets. 
13. RNDIS function

14. SERIAL function

15. SOURCESINK function

16. UAC1 function





1. ACM function
@@ -587,3 +588,29 @@ device: run the gadget 
host: test-usb



http://www.linux-usb.org/usbtest/testusb.c



16. UAC1 function

=================



The function is provided by usb_f_uac1.ko module.



Function-specific configfs interface

------------------------------------



The function name to use when creating the function directory is "uac1".

The uac1 function provides these attributes in its function directory:



	audio_buf_size - audio buffer size

	fn_cap - capture pcm device file name

	fn_cntl - control device file name

	fn_play - playback pcm device file name

	req_buf_size - ISO OUT endpoint request buffer size

	req_count - ISO OUT endpoint request count



The attributes have sane default values.



Testing the UAC1 function

-------------------------



device: run the gadget

host: aplay -l # should list our USB Audio Gadget