# APKBUILD based on linux-vanilla aport. Changes:
# Kernel config based on: arch/arm/configs/lineageos_w55ds_defconfig
# Changes:
# - enable devtmpfs (needed for udev -> touch support in weston)
# - disable ANDROID_PARANOID_NETWORK (removes network restrictions)

_vendor=lg
_flavor=lg-d285
_hash="75a583b12772acf3a6e7422cf781ddd7a9e9a5c5"
_config="config-lg-d285.armhf"

pkgname=linux-${_flavor}
pkgver=3.4.0
case $pkgver in
	*.*.*)  _kernver=${pkgver%.*};;
	*.*) _kernver=$pkgver;;
esac
pkgrel=6
arch="armhf"
pkgdesc="LineageOS kernel for LG L65"
url="https://github.com/LineageOS/android_kernel_lge_msm8226"
depends=""
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev python2 gcc6"
options="!strip !check !tracedeps"
install=
source="
	$pkgname-$_hash.tar.gz::https://github.com/LineageOS/android_kernel_lge_msm8226/archive/${_hash}.tar.gz
	${_config}
	compiler-gcc6.h
	00_fix_return_address.patch
	02_gpu-msm-fix-gcc5-compile.patch
	03_mdss_fb_refresh_rate.patch
"
subpackages=""
license="GPL2"

_abi_release=${pkgver}
_carch="arm"

# Compiler: this kernel was only tested with GCC6. Feel free to make a merge
# request if you find out that it is booting working with newer GCCs as
# well. See <https://postmarketos.org/vendorkernel> for instructions.
if [ "${CC:0:5}" != "gcc6-" ]; then
	CC="gcc6-$CC"
	HOSTCC="gcc6-gcc"
	CROSS_COMPILE="gcc6-$CROSS_COMPILE"
fi

ksrcdir="$srcdir/android_kernel_lge_msm8226-${_hash}"

prepare() {
	local _patch_failed=
	cd "$ksrcdir"

	# first apply patches in specified order
	for i in $source; do
		case $i in
		*.patch)
			msg "Applying $i..."
			if ! patch -s -p1 -N -i "$srcdir"/$i; then
				echo $i >>failed
				_patch_failed=1
			fi
			;;
		esac
	done

	if ! [ -z "$_patch_failed" ]; then
		error "The following patches failed:"
		cat failed
		return 1
	fi

	# gcc6 support
	cp -v "$srcdir/compiler-gcc6.h" "$ksrcdir/include/linux/"

	mkdir -p "$srcdir"/build
	cp "$srcdir"/$_config "$srcdir"/build/.config || return 1
	echo "--[ silentoldconfig ]--"
	yes "" | make -C "$ksrcdir" O="$srcdir"/build ARCH="$_carch" HOSTCC="$HOSTCC" \
		oldconfig
}

build() {
	cd "$srcdir"/build
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" CONFIG_NO_ERROR_ON_MISMATCH=y \
		|| return 1
	echo "--[ Build modules ]--"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" CONFIG_NO_ERROR_ON_MISMATCH=y \
		modules || return 1
}

package() {
	install -Dm644 "$srcdir/build/arch/arm/boot/zImage-dtb" \
		"$pkgdir/boot/vmlinuz-$_flavor"

	install -D "$srcdir/build/include/config/kernel.release" \
		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"

	cd "$srcdir"/build
	unset LDFLAGS
	echo "--[ Installing modules ]--"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" CONFIG_NO_ERROR_ON_MISMATCH=y \
		INSTALL_MOD_PATH="$pkgdir" INSTALL_MOD_STRIP=1 modules_install \
		|| return 1
}

sha512sums="d201e20557edea08947f10be1465560d292522f07099e2f8927164766da57e4f8a2c3fcd3e3ed427e856a86afe4fb3a4233753e19d4b7cb96b8258c6355be9f0  linux-lg-d285-75a583b12772acf3a6e7422cf781ddd7a9e9a5c5.tar.gz
d0fb124cb11162149dbaff3c492fef2385ea3e3a5e41b230f71490922ab8290775e2b32dab747a5b5a03a137b758ddf685942f8e32897b86258654e643ba808d  config-lg-d285.armhf
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
ea1d3b5a234fa565e3c1a792de48f4fc4e6023d281d303c8e319c7ef28edc5739ab0e4dea0139a41f0a5c7d03e27921ccaa214fd0ac5c72245a094ce60128864  00_fix_return_address.patch
7be03a9e78b7ac330a54b1f00509caa0621a95c0c55901878ad757f9dd69cc05ba2c8b5ea987063ae1224f92c4d090d515fa5d369e7755181a4871b0d0f82881  02_gpu-msm-fix-gcc5-compile.patch
a8c955bf718f155011e980f3d0948be98e1fee5649f418299a4851780543019daf7afa406aa7b0829375645107e4e6fbf241026b0cabe2b2ac895a47df83d2d8  03_mdss_fb_refresh_rate.patch"