[PATCH v2 1/2] usb: mtu3: add a vbus debugfs interface

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 ---

[PATCH v2 1/2] usb: mtu3: add a vbus debugfs interface

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 --- drivers/usb/mtu3/mtu3_dr.c | 58