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usb: gadget: hid: add configfs support

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Make the hid function available for gadgets composed with configfs.

Signed-off-by: Andrzej Pietrasiewicz <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
This commit is contained in:
Andrzej Pietrasiewicz 2014-11-06 11:12:03 +01:00 • committed by Felipe Balbi
commit 21a9476a7b
5 changed files with 178 additions and 1 deletions
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7
Documentation/usb/gadget_hid.txt
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@ -74,6 +74,13 @@ static struct platform_device my_hid = {
You can add as many HID functions as you want, only limited by
the amount of interrupt endpoints your gadget driver supports.
Configuration with configfs
Instead of adding fake platform devices and drivers in order to pass
some data to the kernel, if HID is a part of a gadget composed with
configfs the hidg_func_descriptor.report_desc is passed to the kernel
by writing the appropriate stream of bytes to a configfs attribute.
Send and receive HID reports
HID reports can be sent/received using read/write on the