USB Gadget API for Linux | ||
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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.
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usb_gadget_clear_selfpowered | Up | usb_gadget_vbus_draw |