add a install script

dkms.conf

@@ -0,0 +1,5 @@
+PACKAGE_NAME="seeed-voicecard"
+PACKAGE_VERSION="0.1"
+BUILT_MODULE_NAME[0]="wm8960"
+DEST_MODULE_LOCATION[0]="/kernel/sound/soc/codecs"
+AUTOINSTALL="yes"

install.sh

@@ -0,0 +1,67 @@
+#!/bin/bash
+
+if [[ $EUID -ne 0 ]]; then
+   echo "This script must be run as root (use sudo)" 1>&2
+   exit 1
+fi
+
+
+ver="0.1"
+
+# we create a dir with this version to ensure that 'dkms remove' won't delete
+# the sources during kernel updates
+marker="0.0.0"
+
+apt update
+apt-get -y install raspberrypi-kernel-headers raspberrypi-kernel
+apt-get -y install  dkms
+
+# locate currently installed kernels (may be different to running kernel if
+# it's just been updated)
+kernels=$(ls /lib/modules | sed "s/^/-k /")
+
+function install_module {
+  src=$1
+  mod=$2
+
+  if [[ -d /var/lib/dkms/$mod/$ver/$marker ]]; then
+    rmdir /var/lib/dkms/$mod/$ver/$marker
+  fi
+
+  if [[ -e /usr/src/$mod-$ver || -e /var/lib/dkms/$mod/$ver ]]; then
+    dkms remove -m $mod -v $ver --all
+    rm -rf /usr/src/$mod-$ver
+  fi
+  mkdir -p /usr/src/$mod-$ver
+  cp -a $src/* /usr/src/$mod-$ver/
+  dkms add -m $mod -v $ver
+  dkms build $kernels -m $mod -v $ver && dkms install $kernels -m $mod -v $ver
+
+  mkdir -p /var/lib/dkms/$mod/$ver/$marker
+}
+
+install_module "./" "seeed-voicecard"
+
+
+(
+  cp seeed-voicecard.dtbo /boot/overlays
+  cp asound.state /var/lib/alsa/asound.state
+)
+
+echo 'wm8960' | sudo tee --append /etc/modules > /dev/null
+
+sed -i \
+  -e "s/^dtparam=audio=on/#\0/" \
+  -e "s/^#\(dtparam=i2s=on\)/\1/" \
+  /boot/config.txt
+grep -q "dtoverlay=i2s-mmap" /boot/config.txt || \
+  echo "dtoverlay=i2s-mmap" >> /boot/config.txt
+grep -q "dtoverlay=seeed-voicecard" /boot/config.txt || \
+  echo "dtoverlay=seeed-voicecard" >> /boot/config.txt
+grep -q "dtparam=i2s=on" /boot/config.txt || \
+  echo "dtparam=i2s=on" >> /boot/config.txt
+
+echo "------------------------------------------------------"
+echo "Please reboot your raspberry pi to apply all settings"
+echo "Enjoy!"
+echo "------------------------------------------------------"