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authorAndrzej Pietrasiewicz <andrzej.p@samsung.com>2014-12-16 13:56:25 (GMT)
committerFelipe Balbi <balbi@ti.com>2015-01-12 18:13:24 (GMT)
commite38eb2c8cb435729579576b2b5bc5247ebcd6f5b (patch)
tree3e7735bda61774ddb07c768aed0a9c9eab1d226a /Documentation/usb
parentb797ef4e167b68dc5d6bfcb1b77f7f077dddb825 (diff)
Documentation: usb: ACM function testing
The newly added file will be used to provide descriptions of how to test the functions of USB gadgets. Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'Documentation/usb')
-rw-r--r--Documentation/usb/gadget-testing.txt34
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diff --git a/Documentation/usb/gadget-testing.txt b/Documentation/usb/gadget-testing.txt
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+This file summarizes information on basic testing of USB functions
+provided by gadgets.
+
+1. ACM function
+
+
+1. ACM function
+===============
+
+The function is provided by usb_f_acm.ko module.
+
+Function-specific configfs interface
+------------------------------------
+
+The function name to use when creating the function directory is "acm".
+The ACM function provides just one attribute in its function directory:
+
+ port_num
+
+The attribute is read-only.
+
+There can be at most 4 ACM/generic serial/OBEX ports in the system.
+
+
+Testing the ACM function
+------------------------
+
+On the host: cat > /dev/ttyACM<X>
+On the device : cat /dev/ttyGS<Y>
+
+then the other way round
+
+On the device: cat > /dev/ttyGS<Y>
+On the host: cat /dev/ttyACM<X>

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