Add basic support for LG G4 (h815) (#1060)

aports/device/device-lg-h815/APKBUILD

@@ -0,0 +1,22 @@
+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-lg-h815"
+pkgdesc="LG G4 (h815)"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="noarch"
+options="!check"
+depends="linux-lg-h815 mkbootimg msm-fb-refresher"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="3a16884fec34d09277bea7dd5de966de5aa58fec1dbb47b90ed79541c5e33d5baa4e3fbfb7857573adf93909223e39cc62b6e00103700d0d5610ffe51831122d  deviceinfo"

aports/device/device-lg-h815/deviceinfo

@@ -0,0 +1,34 @@
+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="LG G4 (h815)"
+deviceinfo_manufacturer="LG"
+deviceinfo_date=""
+deviceinfo_dtb=""
+deviceinfo_modules_initfs=""
+deviceinfo_external_disk_install="false"
+deviceinfo_arch="aarch64"
+
+# Device related
+deviceinfo_keyboard="false"
+deviceinfo_external_disk="true"
+deviceinfo_screen_width="1440"
+deviceinfo_screen_height="2560"
+deviceinfo_dev_touchscreen=""
+deviceinfo_dev_touchscreen_calibration=""
+deviceinfo_dev_keyboard=""
+
+# Bootloader related
+deviceinfo_flash_method="fastboot"
+deviceinfo_kernel_cmdline="console=ttyHSL0,115200,n8 androidboot.console=ttyHSL0 androidboot.hardware=qcom user_debug=31 ehci-hcd.park=3 lpm_levels.sleep_disabled=1 msm_rtb.filter=0x37 boot_cpus=0-5 buildvariant=userdebug"
+deviceinfo_generate_bootimg="true"
+deviceinfo_bootimg_qcdt="false"
+deviceinfo_flash_offset_base="0x00000000"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_pagesize="4096"
+
+deviceinfo_msm_refresher="true"

aports/device/linux-lg-h815/APKBUILD

@@ -0,0 +1,81 @@
+# Kernel config based on: arch/arm64/configs/lineageos_h815_defconfig
+
+pkgname="linux-lg-h815"
+pkgver=3.10.84
+pkgrel=0
+pkgdesc="LG G4 (h815) kernel fork"
+arch="aarch64"
+_carch="arm64"
+_flavor="lg-h815"
+url="https://kernel.org"
+license="GPL2"
+options="!strip !check !tracedeps"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev"
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+# Source
+_repository="android_kernel_lge_msm8992"
+_commit="aad745da91abbdf8bacda189aebf22db048604f5"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
+	$_config
+	compiler-gcc6.h
+	fix-powerlevel.patch
+"
+builddir="$srcdir/${_repository}-${_commit}"
+
+prepare() {
+	default_prepare
+
+	# gcc6 support
+	cp -v "$srcdir/compiler-gcc6.h" "$builddir/include/linux/"
+
+	# Remove -Werror from all makefiles
+	find . -type f -name Makefile -print0 | \
+		xargs -0 sed -i 's/-Werror-/-W/g'
+	find . -type f -name Makefile -print0 | \
+		xargs -0 sed -i 's/-Werror//g'
+
+	# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
+	cp "$srcdir"/$_config "$builddir"/.config
+	yes "" | make ARCH="$_carch" HOSTCC="$HOSTCC" oldconfig
+}
+
+menuconfig() {
+	cd "$builddir"
+	make ARCH="$_carch" menuconfig
+	cp .config "$startdir"/$_config
+}
+
+build() {
+	unset LDFLAGS
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+}
+
+package() {
+	# kernel.release
+	install -D "$builddir/include/config/kernel.release" \
+		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"
+
+	# zImage (find the right one)
+	cd "$builddir/arch/$_carch/boot"
+	_target="$pkgdir/boot/vmlinuz-$_flavor"
+	for _zimg in zImage-dtb Image.gz-dtb *zImage Image; do
+		[ -e "$_zimg" ] || continue
+		msg "zImage found: $_zimg"
+		install -Dm644 "$_zimg" "$_target"
+		break
+	done
+	if ! [ -e "$_target" ]; then
+		error "Could not find zImage in $PWD!"
+		return 1
+	fi
+}
+
+sha512sums="48a3345de582a6e4ba7fc2f87ffd423750bb8a1878ce386b8504306a49294e01e6c4c7511d2c178d8c9fb228c288782fe64f606df381843f144986d1cd467ad7  linux-lg-h815-aad745da91abbdf8bacda189aebf22db048604f5.tar.gz
+a5939ad7e4c1e3d8b455dd262fc4c55e4facc09f315809da4b1d8e470908d15e489813a856c6709e05f1583ea906562a2ed2ef7c23511430eabc7a6f646c48bf  config-lg-h815.aarch64
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
+337fe3e03580bbe73e5c20420981c11bf7c71e67270a828df309e6f08a573c3ce0d5cdd68efe5552abb4635d4ba1788df80e81745204955fedaf5731144ea994  fix-powerlevel.patch"

aports/device/linux-lg-h815/compiler-gcc6.h

@@ -0,0 +1,69 @@
+// SOURCE:
+// https://github.com/NextThingCo/CHIP-u-boot/issues/10#issuecomment-287515505
+
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc6.h> directly, include <linux/compiler.h> instead."
+#endif
+
+#define __used				__attribute__((__used__))
+#define __must_check			__attribute__((warn_unused_result))
+#define __compiler_offsetof(a, b)	__builtin_offsetof(a, b)
+
+/* Mark functions as cold. gcc will assume any path leading to a call
+   to them will be unlikely.  This means a lot of manual unlikely()s
+   are unnecessary now for any paths leading to the usual suspects
+   like BUG(), printk(), panic() etc. [but let's keep them for now for
+   older compilers]
+
+   Early snapshots of gcc 4.3 don't support this and we can't detect this
+   in the preprocessor, but we can live with this because they're unreleased.
+   Maketime probing would be overkill here.
+
+   gcc also has a __attribute__((__hot__)) to move hot functions into
+   a special section, but I don't see any sense in this right now in
+   the kernel context */
+#define __cold			__attribute__((__cold__))
+
+#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+
+#ifndef __CHECKER__
+# define __compiletime_warning(message) __attribute__((warning(message)))
+# define __compiletime_error(message) __attribute__((error(message)))
+#endif /* __CHECKER__ */
+
+/*
+ * Mark a position in code as unreachable.  This can be used to
+ * suppress control flow warnings after asm blocks that transfer
+ * control elsewhere.
+ *
+ * Early snapshots of gcc 4.5 don't support this and we can't detect
+ * this in the preprocessor, but we can live with this because they're
+ * unreleased.  Really, we need to have autoconf for the kernel.
+ */
+#define unreachable() __builtin_unreachable()
+
+/* Mark a function definition as prohibited from being cloned. */
+#define __noclone	__attribute__((__noclone__))
+
+/*
+ * Tell the optimizer that something else uses this function or variable.
+ */
+#define __visible __attribute__((externally_visible))
+
+/*
+ * GCC 'asm goto' miscompiles certain code sequences:
+ *
+ *   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
+ *
+ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
+ *
+ * (asm goto is automatically volatile - the naming reflects this.)
+ */
+#define asm_volatile_goto(x...)	do { asm goto(x); asm (""); } while (0)
+
+#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
+#define __HAVE_BUILTIN_BSWAP32__
+#define __HAVE_BUILTIN_BSWAP64__
+#define __HAVE_BUILTIN_BSWAP16__
+#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
+

aports/device/linux-lg-h815/fix-powerlevel.patch

@@ -0,0 +1,16 @@
+Fix gpu_power_level not being defined when compiling without KGSL (is it really needed?)
+
+diff --git a/drivers/soc/qcom/msm_performance.c b/drivers/soc/qcom/msm_performance.c
+index dbfb3f0..5f3e3b3 100644
+--- a/drivers/soc/qcom/msm_performance.c
++++ b/drivers/soc/qcom/msm_performance.c
+@@ -1384,6 +1384,8 @@ static void start_timer(struct cluster *cl)
+        spin_unlock_irqrestore(&cl->timer_lock, flags);
+ }
+ 
++int gpu_power_level;
++int gpu_max_power_level;
+ static void check_cpu_load(struct cluster *cl, u64 now)
+ {
+        struct load_stats *pcpu_st;
+