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# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $
WANT_AUTOCONF=2.5
WANT_AUTOMAKE=1.9
inherit linux-info eutils autotools
DESCRIPTION="A kernel patch to change the voltage/frequency pairs of processors from userspace."
HOMEPAGE="https://www.dedigentoo.org/trac/linux-phc/"
SRC_URI="mirror://sourceforge/${PN}/${P}.tar.gz"
LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~x86"
IUSE=""
which_patch() {
if kernel_is 2 6 20
then
PATCH="kernel-patch/${P}-kernel-vanilla-2.6.20.patch"
elif kernel_is 2 6 19
then
PATCH="kernel-patch/${P}-kernel-vanilla-2.6.19.patch"
elif kernel_is 2 6 18
then
PATCH="kernel-patch/${P}-kernel-vanilla-2.6.18.patch"
elif kernel_is 2 6 17
then
PATCH="kernel-patch/${P}-kernel-vanilla-2.6.17.patch"
elif kernel_is 2 6 16
then
PATCH="kernel-patch/${P}-kernel-vanilla-2.6.16.patch"
elif kernel_is 2 6 15
then
PATCH="kernel-patch/${P}-kernel-vanilla-2.6.15.patch"
else
die "No ${PN} patch for kernel version ${KV_FULL} -- sorry not supported"
fi
}
collision_check() {
if has collision-protect ${FEATURES}; then
ewarn "Collisions are expected as this patches kernel code. Disable"
ewarn "FEATURES=collision-protect before use"
die 'incompatible FEATURES=collision-protect'
fi
}
pkg_setup() {
linux-info_pkg_setup
collision_check
}
src_unpack() {
which_patch
if egrep -q 'linux-phc' \
"${KV_DIR}"/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
then
ewarn "already installed ${PN} for kernel ${KV_FULL}"
ewarn "If this is an upgrade attempt, reemerge your kernel sources"
ewarn "and try emerging this package again."
die
fi
unpack ${A}
cd "${S}"
# linux-headers-2.6.20 doesn't have asm/msr.h
epatch "${FILESDIR}"/${P}-msr_h-fix.patch || die "epatch failed"
local mydir="arch/i386/kernel/cpu/cpufreq"
mkdir -p "${S}"/${mydir}
cp -P "${KV_DIR}"/${mydir}/Kconfig "${S}"/${mydir}/
cp -P "${KV_DIR}"/${mydir}/Makefile "${S}"/${mydir}/
cp -P "${KV_DIR}"/${mydir}/speedstep-centrino.c "${S}"/${mydir}/
epatch "${S}"/${PATCH}
}
src_compile() {
einfo "Compiling measurefreq"
cd "${S}"/utils/measurefreq
eautoconf
eautomake
econf || die "econf failed"
emake || die "emake failed"
}
src_install() {
insinto "$(/bin/readlink -f ${KV_DIR})"
doins -r arch
dodoc README
doinitd gentoo/etc/init.d/undervolt
doconfd gentoo/etc/conf.d/undervolt
cd "${S}"/utils/measurefreq
emake DESTDIR="${D}" install || die "emake failed"
}
pkg_preinst() {
collision_check
}
pkg_postinst() {
elog "Please read https://www.dedigentoo.org/trac/linux-phc/#Documentation before using linux-phc"
elog "You can use the utility measurefreq to find appropriate voltage values."
ewarn "Edit /etc/conf.d/undervolt before using the initscript"
}
pkg_postrm() {
ewarn "Unmerging this ebuild won't revert the patches in your kernel"
ewarn "Reemerge your kernel if you want that"
}
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