usb_gadget_vbus_connect (9)

Notify controller that vbus is powered

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  4. usb_gadget_vbus_connect: Notify controller that vbus is powered
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  3. linux-manual-3.16
  4. usb_gadget_vbus_connect: Notify controller that vbus is powered

SYNOPSIS

int usb_gadget_vbus_connect(struct usb_gadget * gadget);

ARGUMENTS

gadget

The device which now has VBUS power.

CONTEXT

can sleep

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.

AUTHOR

David Brownell <[email protected]>

Author.

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