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Documentation: usb: SOURCESINK function testing

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Summary of how to test SOURCESINK function of USB gadget.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
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Andrzej Pietrasiewicz 2014-12-16 14:56:39 +01:00 committed by Felipe Balbi
parent 4dfcec8a2f
commit 480a912be4
1 changed files with 27 additions and 0 deletions
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Documentation/usb/gadget-testing.txt
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@ -15,6 +15,7 @@ provided by gadgets.
12. PHONET function 12. PHONET function
13. RNDIS function 13. RNDIS function
14. SERIAL function 14. SERIAL function
15. SOURCESINK function
1. ACM function 1. ACM function
@ -560,3 +561,29 @@ then the other way round
On target: cat > /dev/ttyGS<Y> On target: cat > /dev/ttyGS<Y>
On host: cat /dev/ttyUSB<X> On host: cat /dev/ttyUSB<X>
15. SOURCESINK function
=======================
The function is provided by usb_f_ss_lb.ko module.
Function-specific configfs interface
------------------------------------
The function name to use when creating the function directory is "SourceSink".
The SOURCESINK function provides these attributes in its function directory:
pattern - 0 (all zeros), 1 (mod63), 2 (none)
isoc_interval - 1..16
isoc_maxpacket - 0 - 1023 (fs), 0 - 1024 (hs/ss)
isoc_mult - 0..2 (hs/ss only)
isoc_maxburst - 0..15 (ss only)
bulk_buflen - buffer length
Testing the SOURCESINK function
-------------------------------
device: run the gadget
host: test-usb
http://www.linux-usb.org/usbtest/testusb.c