hooks: rename 'usbinput' to 'keyboard' and add more modules

Make the hook a bit more generic by including non-usb keyboard drivers.
This should mean that any keyboard will now work in the initramfs.

In addition to fixing some uncommon setups requiring additional keyboard
modules, this would allow us to no longer build in the atkbd module (and
hence i8042) in our stock kernels, which will remove an ugly error message
on boot for systems without the i8042 controller.

Signed-off-by: Tom Gundersen <teg@jklm.no>

1 files changed, 31 insertions, 0 deletions

diff --git a/install/keyboard b/install/keyboard
new file mode 100644
index 0000000..91a00e7
--- /dev/null
+++ b/install/keyboard
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+build() {
+    local major minor
+
+    add_checked_modules -f '(_cs|sl811_hcd|isp116x_hcd)' '/usb/host'
+
+    # As of 3.5, modaliases seem to be exported for HID
+    # devices, so we can leverage autodetection.
+    IFS=.- read major minor _ <<<"$KERNELVERSION"
+    if (( major > 3 || (major == 3 && minor >= 5) )); then
+        add_checked_modules '/hid/hid'
+    else
+        add_all_modules '/hid/hid'
+    fi
+
+    add_module 'usbhid'
+
+    add_checked_modules '/input/keyboard'
+}
+
+help() {
+    cat <<HELPEOF
+This hook loads the necessary modules for keyboard devices. As a side-effect
+modules for some non-keyboard input devices might be added to, but this should
+not be relied on. Detection will take place at runtime. To minimize the modules
+in the image, add the autodetect hook too.
+HELPEOF
+}
+
+# vim: set ft=sh ts=4 sw=4 et: