From 480a912be4eb51e30aec721731b9cf476b2ee861 Mon Sep 17 00:00:00 2001 From: Andrzej Pietrasiewicz Date: Tue, 16 Dec 2014 14:56:39 +0100 Subject: [PATCH] Documentation: usb: SOURCESINK function testing Summary of how to test SOURCESINK function of USB gadget. Signed-off-by: Andrzej Pietrasiewicz Signed-off-by: Felipe Balbi --- Documentation/usb/gadget-testing.txt | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt index bc57c65e76b6..73a5b0c34174 100644 --- a/Documentation/usb/gadget-testing.txt +++ b/Documentation/usb/gadget-testing.txt @@ -15,6 +15,7 @@ provided by gadgets. 12. PHONET function 13. RNDIS function 14. SERIAL function +15. SOURCESINK function 1. ACM function @@ -560,3 +561,29 @@ then the other way round On target: cat > /dev/ttyGS On host: cat /dev/ttyUSB + +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 -- 2.20.1