Add asus-grouper (#180)

device-asus-grouper/90-android-touch-dev.rules

+SUBSYSTEM=="input", ATTRS{name}=="elan-touchscreen", \
+ENV{ID_INPUT}="1", ENV{ID_INPUT_TOUCHSCREEN}="1" \
+ENV{WL_CALIBRATION}="0.982113 -0.006129 1.983124 -0.002560 1.000800 -6.012451"

device-asus-grouper/APKBUILD

+pkgname=device-asus-grouper
+pkgver=1
+pkgrel=2
+pkgdesc="Asus Nexus 7 2012 Wifi"
+url="https://github.com/postmarketOS"
+arch="noarch"
+license="MIT"
+depends="linux-asus-grouper mkbootimg"
+makedepends=""
+install=""
+subpackages=""
+source="deviceinfo initfs-hook.sh 90-android-touch-dev.rules"
+options="!check"
+
+build() {
+	return 0
+}
+
+package() {
+	install -D -m644 "$srcdir/deviceinfo" \
+		"$pkgdir/etc/deviceinfo"
+	install -D -m644 "$srcdir"/initfs-hook.sh \
+		"$pkgdir"/etc/postmarketos-mkinitfs/hooks/00-${pkgname}.sh
+	install -D -m644 "$srcdir"/90-android-touch-dev.rules \
+		"$pkgdir"/etc/udev/rules.d/90-android-touch-dev.rules
+}
+
+sha512sums="dcd9e938578d34f9fba7a18bbc7cc6a8707bdf0f08caa82d70a4ff0421e4035a99892d329ea7eed7cd048eb9fa4dc000bbb6c61d551ae29f14f7008a8dfc01e1  deviceinfo
+8590967fa10388a890fdfafdb1070b9ab22dc89e06a3a8834806c772191e3b67de7b914b0d68e5ddf581cee715cb90f3f24abcb8762c415ff328c6da23e55d52  initfs-hook.sh
+05f938784e8f30cdbe9923a5f3e34ce7c539060d3a621741206bc5ed02afd7cbf480b02fbe48a70968e7182f885ab9bfe57c4d1e7c6eefca54a6f7188d2849f2  90-android-touch-dev.rules"

device-asus-grouper/deviceinfo

+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Nexus 7 2012 Wifi"
+deviceinfo_manufacturer="Asus"
+deviceinfo_date=""
+deviceinfo_keyboard="false"
+deviceinfo_nonfree="????"
+deviceinfo_dtb=""
+deviceinfo_modules=""
+deviceinfo_modules_initfs=""
+deviceinfo_external_disk="false"
+deviceinfo_external_disk_install="false"
+deviceinfo_flash_methods="fastboot"
+deviceinfo_arch="armhf"
+
+# Fastboot related
+deviceinfo_generate_bootimg="true"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_pagesize="2048"

device-asus-grouper/initfs-hook.sh

+#!/bin/sh
+
+# set framebuffer resolution
+cat /sys/class/graphics/fb0/modes > /sys/class/graphics/fb0/mode

linux-asus-grouper/APKBUILD

+# APKBUILD based on linux-vanilla aport. Changes:
+# - disabled module installation
+# - add !check !tracedeps
+# - package: just install zimage and kernel.release, because the kernel config
+#	does not generate modules or dtb files
+# - do not create -dev subpackage (makes no sense without module support)
+#
+# Kernel config based on: arch/arm/configs/lineageos_grouper_defconfig
+# Changes:
+# - enable devtmpfs (needed for udev -> touch support in weston)
+
+_vendor=asus
+_flavor=asus-grouper
+_hash="953e26f2709dfe0c185c3c99c50b0c9d56d473a4"
+_config="config-${_flavor}.armhf"
+
+pkgname=linux-${_flavor}
+pkgver=3.4.0
+case $pkgver in
+	*.*.*)  _kernver=${pkgver%.*};;
+	*.*) _kernver=$pkgver;;
+esac
+pkgrel=3
+arch="armhf"
+pkgdesc="Nexus 7 (2012) kernel from LineageOS"
+url="https://github.com/LineageOS/android_kernel_asus_grouper"
+depends="postmarketos-mkinitfs"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev"
+options="!strip !check !tracedeps"
+install=
+source="
+	$pkgname-$_hash.zip::https://github.com/LineageOS/android_kernel_asus_grouper/archive/${_hash}.zip
+	$_config
+	compiler-gcc6.h
+	duplicate-return-address-definition.patch
+"
+subpackages=""
+license="GPL2"
+
+_abi_release=${pkgver}
+_carch="arm"
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+#ksrcdir="$srcdir/${_vendor}-kernel-grouper-${_hash}"
+ksrcdir="$srcdir/android_kernel_asus_grouper-${_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
+	make -C "$ksrcdir" O="$srcdir"/build ARCH="$_carch" HOSTCC="$HOSTCC" \
+		silentoldconfig
+}
+
+
+
+# this is so we can do: 'abuild menuconfig' to reconfigure kernel
+menuconfig() {
+	cd "$srcdir"/build || return 1
+	make ARCH="$_carch" menuconfig
+	cp .config "$startdir"/$_config
+}
+
+build() {
+	cd "$srcdir"/build
+	unset LDFLAGS
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
+		|| return 1
+}
+
+package() {
+	install -Dm644 "$srcdir/build/arch/arm/boot/zImage" \
+		"$pkgdir/boot/vmlinuz-$_flavor"
+
+	install -D "$srcdir/build/include/config/kernel.release" \
+		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"
+}
+
+sha512sums="03d7c2073e6998d4c414267956691300fbd4a1d8b6ea8a773ea906ba306329269aaa47734fc91f65069861f07a4d5b9f63b8f1160c671aa21445ae4196cdec27  linux-asus-grouper-953e26f2709dfe0c185c3c99c50b0c9d56d473a4.zip
+3a655e00e4820f123010de8a6bbe7b757b53d352d0e51eef5de4565bd8f473a6735d5bb7961f5abd9fc4de9b0312f303d1819986756a7c603e2e69aa806ab144  config-asus-grouper.armhf
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
+9b15bf1f6cb66f54c785b0af6c9db8a7d63257e6fa3eeb0cbf47284334166aa6a7ff93e1b64ab69206c8047d64641199c0f5fcbc257bbe039263252fff45118e  duplicate-return-address-definition.patch"

linux-asus-grouper/compiler-gcc6.h

+// 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 */
+

linux-asus-grouper/duplicate-return-address-definition.patch

+From aeea3592a13bf12861943e44fc48f1f270941f8d Mon Sep 17 00:00:00 2001
+From: Behan Webster <behanw@converseincode.com>
+Date: Wed, 24 Sep 2014 01:06:46 +0100
+Subject: [PATCH] ARM: 8158/1: LLVMLinux: use static inline in ARM ftrace.h
+
+With compilers which follow the C99 standard (like modern versions of gcc and
+clang), "extern inline" does the wrong thing (emits code for an externally
+linkable version of the inline function). In this case using static inline
+and removing the NULL version of return_address in return_address.c does
+the right thing.
+
+Signed-off-by: Behan Webster <behanw@converseincode.com>
+Reviewed-by: Mark Charlebois <charlebm@gmail.com>
+Acked-by: Steven Rostedt <rostedt@goodmis.org>
+Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
+---
+ arch/arm/include/asm/ftrace.h    | 2 +-
+ arch/arm/kernel/return_address.c | 5 -----
+ 2 files changed, 1 insertion(+), 6 deletions(-)
+
+diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
+index 39eb16b0066f2..bfe2a2f5a644e 100644
+--- a/arch/arm/include/asm/ftrace.h
++++ b/arch/arm/include/asm/ftrace.h
+@@ -45,7 +45,7 @@ void *return_address(unsigned int);
+ 
+ #else
+ 
+-extern inline void *return_address(unsigned int level)
++static inline void *return_address(unsigned int level)
+ {
+ 	return NULL;
+ }
+diff --git a/arch/arm/kernel/return_address.c b/arch/arm/kernel/return_address.c
+index fafedd86885dd..f6aa84d5b93c9 100644
+--- a/arch/arm/kernel/return_address.c
++++ b/arch/arm/kernel/return_address.c
+@@ -63,11 +63,6 @@ void *return_address(unsigned int level)
+ #warning "TODO: return_address should use unwind tables"
+ #endif
+ 
+-void *return_address(unsigned int level)
+-{
+-	return NULL;
+-}
+-
+ #endif /* if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) / else */
+ 
+ EXPORT_SYMBOL_GPL(return_address);
+