#!/usr/bin/bash
#
# Rebuild the speaker-amplifier module for each new kernel.
#
# snd-soc-wsa881x is not in any Fedora package (see c630-wsa881x), so it lives
# in /lib/modules/<kver>/extra and has to be rebuilt whenever a kernel is
# installed. Without this the speakers go silent the first time you run
# `dnf upgrade`, and nothing in the logs connects the two events.
#
# This runs at 96, after 95-c630-devicetree, because it must not come between
# 90-loaderentry.install — which rewrites the BLS entry — and the hook that
# puts the devicetree line back.
#
# It always exits 0. kernel-install stops at the first plugin that fails, and
# this machine has already been bitten once by that: a full /boot made
# 50-dracut.install fail, which meant 95-c630-devicetree never ran, which left
# a boot entry with neither an initrd nor a devicetree. Silent speakers are
# worth a warning; they are not worth an unbootable machine.

set -u

COMMAND="${1:?}"
KERNEL_VERSION="${2:?}"

[ "$COMMAND" = "add" ] || exit 0

if ! command -v c630-wsa881x >/dev/null; then
    exit 0
fi

if ! c630-wsa881x "$KERNEL_VERSION"; then
    echo "96-c630-wsa881x: could not build snd-soc-wsa881x for ${KERNEL_VERSION};" \
         "the built-in speakers will be silent on that kernel until you run" \
         "'sudo c630-wsa881x ${KERNEL_VERSION}'" >&2
fi

exit 0