usb_gadget_vbus_connect - Notify controller that VBUS is powered
2. SYNOPSIS ▲
int usb_gadget_vbus_connect(struct usb_gadget * gadget );
3. ARGUMENTS ▲
The device which now has VBUS power.
4. CONTEXT ▲
5. DESCRIPTION ▲
This call is used by a driver for an external transceiver (or GPIO) that detects a VBUS power session starting. Common responses include resuming the controller, activating the D+ (or D-) pullup to let the host detect that a USB device is attached, and starting to draw power (8mA or possibly more, especially after SET_CONFIGURATION).
Returns zero on success, else negative errno.
6. AUTHOR ▲
David Brownell <
7. COPYRIGHT ▲