wakeup

usb wakeup

开启鼠标键盘唤醒

static int usbhid_start(struct hid_device *hid)
{
	struct usb_interface *intf = to_usb_interface(hid->dev.parent);
	struct usb_host_interface *interface = intf->cur_altsetting;
	struct usb_device *dev = interface_to_usbdev(intf);
	struct usbhid_device *usbhid = hid->driver_data;
	unsigned int n, insize = 0;
	int ret;

	mutex_lock(&usbhid->mutex);
    ...
    ...
	/* Some keyboards don't work until their LEDs have been set.
	 * Since BIOSes do set the LEDs, it must be safe for any device
	 * that supports the keyboard boot protocol.
	 * In addition, enable remote wakeup by default for all keyboard
	 * devices supporting the boot protocol.
	 */
	if (interface->desc.bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT) {
		if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD) {	//键盘唤醒
			usbhid_set_leds(hid);
			device_set_wakeup_enable(&dev->dev, 1);
		}
		else if (interface->desc.bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE) {		//鼠标唤醒
			device_set_wakeup_enable(&dev->dev, 1);
		}
	}
    ...
    ...
}