new device: gts210vewifi (Samsung Galaxy Tab S2 9.7 Wifi) (#1493)

Touch screen does not work yet, see the device page for details:
https://wiki.postmarketos.org/wiki/Samsung_Galaxy_Tab_S2_9.7_Wifi_(samsung-gts210vewifi)

device/device-samsung-gts210vewifi/APKBUILD

@@ -0,0 +1,22 @@
+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-samsung-gts210vewifi"
+pkgdesc="Galaxy Tab S2 9.7 WiFi (SM-T813)"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="noarch"
+options="!check"
+depends="postmarketos-base linux-samsung-gts210vewifi mkbootimg mesa-dri-swrast mdss-fb-init-hack"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="bc4d64b148fb1039782af73bf931b77970d6b81e3a61459bbdfa11f6f9edecc1a0753d1fe15ec4b2bd9ff61b08b1c764e760847bdf4947d542efff7f4089fbf3  deviceinfo"

device/device-samsung-gts210vewifi/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="Galaxy Tab S2 9.7 WiFi (SM-T813)"
+deviceinfo_manufacturer="Samsung"
+deviceinfo_date="2016"
+deviceinfo_dtb=""
+deviceinfo_modules_initfs=""
+deviceinfo_arch="aarch64"
+
+# Device related
+deviceinfo_keyboard="false"
+deviceinfo_external_storage="true"
+deviceinfo_screen_width="2048"
+deviceinfo_screen_height="1536"
+deviceinfo_dev_touchscreen="/dev/input/event2"
+deviceinfo_dev_touchscreen_calibration="0 1 1.342 -1 0 1536"
+deviceinfo_dev_keyboard=""
+
+# Bootloader related
+deviceinfo_flash_method="heimdall-bootimg"
+deviceinfo_kernel_cmdline="console=null androidboot.hardware=qcom androidboot.wificountrycode=00 firmware_class.path=/lib/firmware/postmarketos msm_rtb.filter=0x237 ehci-hcd.park=3 androidboot.bootdevice=7824900.sdhci lpm_levels.sleep_disabled=1 earlyprintk buildvariant=userdebug androidboot.selinux=permissive androidboot.sec_atd.tty=/dev/ttyHSL0 sec_log=0x200000@0xa0200000 sec_dbg=0x1ff000@0xa0000000 androidboot.revision=4 androidboot.warranty_bit=1 androidboot.bootloader=T813XXU2BQD3 androidboot.boot_recovery=0 sec_debug.reset_reason=0x0 sec_dbg_ex_info=0x400@0xa01ff000 charging_mode=0x00 pmic_info=3 androidboot.debug_level=0x4f4c sec_debug.enable=0 sec_debug.enable_user=0 msm_rtb.enable=0 androidboot.cp_debug_level=0x55FF sec_debug.enable_cp_debug=0 vmalloc=450M fg_reset=0 androidboot.security_mode=1526595584 androidboot.ucs_mode=0 androidboot.emmc=true gpt lcd_id=0x424015 lcd_id2=0xffffff hall_ic=0x0 mdss_mdp.panel=1:dsi:0:ss_dsi_panel_ANA38401_AMS968HH01_QXGA:1:ss_dsi_panel_ANA38"
+deviceinfo_generate_bootimg="true"
+deviceinfo_bootimg_qcdt="true"
+deviceinfo_flash_offset_base="0x80000000"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x02000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x01e00000"
+deviceinfo_flash_pagesize="2048"
+deviceinfo_flash_heimdall_partition_kernel="BOOT"
+deviceinfo_flash_heimdall_partition_system="SYSTEM"
+

device/linux-samsung-gts210vewifi/01_fix_msm_dba.patch

@@ -0,0 +1,13 @@
+diff --git a/drivers/video/msm/msm_dba/msm_dba.c b/drivers/video/msm/msm_dba/msm_dba.c
+index cc6512a..eb073a7 100644
+--- a/drivers/video/msm/msm_dba/msm_dba.c
++++ b/drivers/video/msm/msm_dba/msm_dba.c
+@@ -22,7 +22,7 @@
+ #include <linux/err.h>
+ 
+ #include <video/msm_dba.h>
+-#include <msm_dba_internal.h>
++#include "msm_dba_internal.h"
+ 
+ static DEFINE_MUTEX(register_mutex);
+ 

device/linux-samsung-gts210vewifi/APKBUILD

@@ -0,0 +1,94 @@
+# Kernel config based on: kernel/samsung/msm8976/arch/arm64/configs/gts210vewifi_defconfig
+
+pkgname="linux-samsung-gts210vewifi"
+pkgver=3.10.102
+pkgrel=0
+pkgdesc="Galaxy Tab S2 9.7 WiFi (SM-T813) kernel fork"
+arch="aarch64"
+_carch="arm64"
+_flavor="samsung-gts210vewifi"
+url="https://kernel.org"
+license="GPL2"
+options="!strip !check !tracedeps"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev dtbtool"
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+# Source
+# gts210vewifi uses msm8976 kernel
+_repository="android_kernel_samsung_msm8976"
+_commit="82d475a1952b9bbb6652b35e87671b5031bcf934"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
+	$_config
+	compiler-gcc6.h
+	01_fix_msm_dba.patch
+"
+builddir="$srcdir/${_repository}-${_commit}"
+
+prepare() {
+	default_prepare
+
+	# gcc6 support
+	cp -v "$srcdir/compiler-gcc6.h" "$builddir/include/linux/"
+
+	# Remove -Werror from all makefiles
+	local i
+	local makefiles="$(find . -type f -name Makefile)
+		$(find . -type f -name Kbuild)"
+	for i in $makefiles; do
+		sed -i 's/-Werror-/-W/g' "$i"
+		sed -i 's/-Werror//g' "$i"
+	done
+
+	# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
+	cp "$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}" \
+		C_INCLUDE_PATH="./arch/arm/mach-msm:./sound/soc/msm/qdsp6v2"
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+	# As path is symlinked from arm64 to arm, dtb files end up below arm, not arm64
+	echo dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm64/boot/dt.img" "arch/arm/boot/dts/"
+	# Generate master DTB (deviceinfo_bootimg_qcdt).
+	dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm64/boot/dt.img" "arch/arm/boot/dts/"
+}
+
+package() {
+	# kernel.release
+	install -D "$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 $PWD!"
+		return 1
+	fi
+ 
+	# Master DTB (deviceinfo_bootimg_qcdt)
+	install -Dm644 "$builddir/arch/arm64/boot/dt.img" \
+		"$pkgdir/boot/dt.img"
+}
+
+sha512sums="37e55b3e64308a29deb8932d8d2452ff76601558bdcb9ff58f3a016f5ec63c2941e5fe7cdcced50d5039d3cdadaa5d43004c4e27cb8b105f8fda7596d676fb9e  linux-samsung-gts210vewifi-82d475a1952b9bbb6652b35e87671b5031bcf934.tar.gz
+31d6b7356ac1c1053dce3319371b18298a4a6e815abcd910a7e0ff0a4dc03bcff15da14f8e8d485c80da29169788754f019f2b158355c3768bae7c2b17f3047b  config-samsung-gts210vewifi.aarch64
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
+7e765cb696fa8c3dfbc305b05cbf1fad85fb9572613d5391e945341dae5974a745f4906c795dc841e5562b19ab77d5257f9741e514af2c2573aa4bb8b262ce51  01_fix_msm_dba.patch"

device/linux-samsung-gts210vewifi/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 */
+