#!/bin/bash
# Deploy a built bes2600 module to /lib/modules/<ver>/extra/ on ohm.
#
# This is the SAFE deploy path: no live module reload (which can wedge
# the chip per Pine64 known issues), just persistent install + reboot.
#
# Run on ohm. Modules expected built at /home/mfritsche/bes2600-build/.

set -e

KVER=$(uname -r)
EXTRA=/lib/modules/${KVER}/extra
STAGING=/lib/modules/${KVER}/kernel/drivers/staging/bes2600

cd /home/mfritsche/bes2600-build
[ -f bes2600.stripped.ko ] || [ -f bes2600.ko ] || { echo "no bes2600.ko built"; exit 1; }

NEW=$( [ -f bes2600.stripped.ko ] && echo bes2600.stripped.ko || echo bes2600.ko )

echo "=== Backup originals (idempotent) ==="
sudo cp -np ${STAGING}/bes2600.ko.zst ${STAGING}/bes2600.ko.zst.pre-deploy.bak 2>&1 || true
sudo cp -np ${STAGING}/bes2600_btuart.ko.zst ${STAGING}/bes2600_btuart.ko.zst.pre-deploy.bak 2>&1 || true
ls -la ${STAGING}/

echo "=== Install patched modules to /extra/ ==="
sudo install -D -m644 ${NEW} ${EXTRA}/bes2600.ko
[ -f bes2600_btuart.ko ] && sudo install -D -m644 bes2600_btuart.ko ${EXTRA}/bes2600_btuart.ko
sudo depmod -a
ls -la ${EXTRA}/

echo "=== Verify modprobe will pick our build ==="
modinfo bes2600 | grep -E 'filename|srcversion'
modinfo bes2600_btuart | grep -E 'filename|srcversion'

echo
echo "Deploy complete. Reboot to load the new module:"
echo "  sudo reboot"
echo
echo "Rollback if anything breaks:"
echo "  sudo rm ${EXTRA}/bes2600*.ko && sudo depmod -a && sudo reboot"