#/bin/sh
# Small script to download,patch,build the alsa module for Thinkpad T61/R61/X61.
# t61-build-alsa-module.sh v0.52 (C) Franklin Piat 2007. released under GPL.
# thanks to 
#	- Alsa-Teams
#	- http://www.thinkwiki.org/wiki/AD1984
# 	- http://www.linuxquestions.org/questions//showthread.php?s=0b8d3760255e43abaecdfc8e0e4cba12&t=564079&page=3

#some QA
wget -O /dev/null http://www.klabs.be/~fpiat/linux/debian/Etch_on_Thinkpad_T61/t61-alsa-QA.$(uname -r).start

case "$(uname -r)" in 
	2.6.2[3456789]*)
		echo "You don't need to compile alsa since kernel 2.6.23"
		exit
esac		

apt-get install module-assistant alsa-source
m-a prepare || exit
m-a clean alsa || exit
m-a get alsa-source || exit
if ! dpkg -p alsa-source | grep -E "Version: 1.0.1[34]" ; then
	# alsa >= 1.0.15 don't need to be patched
	m-a a-i alsa
else
	m-a unpack alsa || exit
	cd /usr/src/modules/alsa-driver/alsa-kernel/ || exit
	## kernel alsa 1.0.14 don't need the first three patch
	case "$(cat ../version)" in 
		1.0.13*)
			wget -O - http://hg.alsa-project.org/alsa-kernel/raw-diff/ed48e4edc677/pci/hda/patch_analog.c | patch -p1 || exit
			wget -O - http://hg.alsa-project.org/alsa-kernel/raw-diff/45179b325c8e/pci/hda/patch_analog.c | patch -p1 || exit
			wget -O - http://www.klabs.be/~fpiat/linux/debian/Etch_on_Thinkpad_T61/t61-alsa-1.0.13-backport-patch.diff | patch -p1 || exit
		 ;;
	esac
	wget -O - http://hg.alsa-project.org/alsa-kernel/raw-diff/958b39f3e8dd/pci/hda/patch_analog.c | patch -p1 || exit
	wget -O - http://hg.alsa-project.org/alsa-kernel/raw-diff/47ca87407c84/pci/hda/patch_analog.c | patch -p1 || exit
	wget -O - http://hg.alsa-project.org/alsa-kernel/raw-diff/ca37aeeeb0ea/pci/hda/patch_analog.c | patch -p1 || exit
	m-a --not-unpack build alsa || exit

	echo Install with : dpkg -i /usr/src/alsa-modules-$(uname -r)_1.0.14-1+$(uname -r).deb
fi
#some QA
wget -O /dev/null http://www.klabs.be/~fpiat/linux/debian/Etch_on_Thinkpad_T61/t61-alsa-QA-$(uname -r).success
echo "You might have to enable 'speaker' (in the gnome mixer's 'switch' tab ; Or in 'alsamixer')".
echo "You might need to add 'options snd-hda-intel model=thinkpad' at the end of /etc/modprobe.d/alsa-base"
echo "You might need to run alsaconf from console (Ctrl-Alt-F1), then do 'invoke-rc.d alsa-utils restart'"