Timeout here is not a good idea. rootfs cannot be mounted and kernel oopses due to...

[projects/geninitrd.git] / mod-usbkbd.sh

#!/bin/sh
# geninitrd mod: usbkbd

find_modules_usbkbd() {
	verbose "Finding USB keyboard modules"

	if [ "$(echo /sys/class/input/input*)" = "/sys/class/input/input*" ]; then
		return
	fi

	local modules i module bInterfaceClass bInterfaceProtocol

	for i in /sys/class/input/input*; do
		# standard usb keyboards
		if [ -f $i/device/bInterfaceClass -a -f $i/device/bInterfaceProtocol ]; then
			bInterfaceClass=$(cat $i/device/bInterfaceClass)
			bInterfaceProtocol=$(cat $i/device/bInterfaceProtocol)
			if [ "$bInterfaceClass" = "03" -a "$bInterfaceProtocol" = "01" ]; then
				module=$(readlink $i/device/driver/module)
				module=$(basename $module)

				if [ -n "$module" ]; then
					verbose "Found USB Keyboard: $(cat $i/name)"
					modules="$modules $module"
				fi
			fi
		fi

		# logitech unifying receiver (unfortunately I know no way to detect keyboard only)
		if grep -qi "Logitech Unifying Device" $i/name; then
			module=$(readlink $i/device/driver/module)
			module=$(basename $module)

			if [ -n "$module" ]; then
				verbose "Found USB Logitech Unifying Device: $(cat $i/name)"
				modules="$modules $module"
			fi
		fi
	done

	if [ -n "$modules" ]; then
		# usb controllers
		for m in $(find_modules_by_class "0c03"); do
			find_module "$m"
		done

		for m in $modules; do
			find_module "-$m"
		done
	fi
}