usb: mtu3: add a vbus debugfs interface

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Provides a new vbus debugfs interface used to turn on/off vbus
regulator, it also can be used to get/put reference count of
vbus, due to sometimes we need keep it alive when manually switch
mtu3 to device mode.

Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Chunfeng Yun 2017-08-04 10:32:46 +08:00 • committed by Greg Kroah-Hartman

parent 46edf52d08

commit e97d2a3968

1 changed files with 50 additions and 8 deletions

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drivers/usb/mtu3/mtu3_dr.c

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