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: Felipe Balbi <felipe.balbi@linux.intel.com>

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Chunfeng Yun 2017-08-04 10:32:46 +08:00 • committed by Felipe Balbi

parent c14af973ed

commit 5c33f8f4c3

1 changed files with 50 additions and 8 deletions

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drivers/usb/mtu3/mtu3_dr.c

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