usb: chipidea: core: add sysfs group

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Sometimes, the user needs to adjust some properties for controllers, eg
the role for controller, we add sysfs group for them.

The attribute 'role' is used to switch host/gadget role dynamically, the
uewr can read the current role, and write the other role compare to
current one to finish the switch.

Signed-off-by: Peter Chen <peter.chen@nxp.com>

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This commit is contained in:

Peter Chen 2017-03-27 10:54:27 +08:00

parent 4f4555cfe7

commit a932a8041f

3 changed files with 72 additions and 3 deletions

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9

Documentation/ABI/testing/sysfs-platform-chipidea-usb2

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64

drivers/usb/chipidea/core.c

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2

drivers/usb/chipidea/udc.c

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