Enable drivers for PMICs and MUICs present on Exynos-based devices:
- max14577: charger, fuel gauge (max17040), regulator,
  used on: Gear 1, Gear 2,
- max77693: charger, fuel gauge (max17042),
  used on: Trats2,
- s5m/s2mps: RTC, clock,
  used on: Arndale, Arndale Octa, Gear 1, Gear 2

This allows full usage of charging stack on these devices along with RTC
and 32 kHz clocks.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
[kgene@kernel.org: savedefconfig]
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Current Exynos CPU idle driver supports entering AFTR (Arm Off, Top
Running) mode on Exynos3250, Exynos4210 (coupled), Exynos4x12 and
Exynos5250. Enable it in default configuration to reduce energy
consumption.
Signed-off-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The Cypress All Points Addressable (APA) I2C Trackpad is used in the
Samsung Exynos 5250 Snow Chromebook. Build the driver as a module so
the device is supported.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The I2C GPIO arbitration driver is used on the Exynos5250 Snow Chromebook
to arbitrate the access to a I2C bus by the Application Processor or a EC.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Many Exynos devices have devices attached to their display ports.
This patch enables the needed Kconfig options to support different
configuration such as simple panel, embedded DisplayPort (eDP) to
LVDS bridges and HDMI displays.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
[kgene@kernel.org: savedefconfig]
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The rtc-s3c driver supports a range of S3C series Real-Time-Clocks found
on many Samsung SoCs. Build the driver as a module to support these RTC.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Build the Generic PWM Samsung driver as a module to support PWM
devices used in platforms with a Samsung SoC.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable the needed Kconfig options to have support for the ChromeOS EC
I2C transport, I2C tunnel and chardev user-space interface.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable the needed kconfig options to have support for Samsung USB 2.0
and USB 3.0 PHY drivers to support the USB PHYs found on Exynos SoCs.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
[kgene@kernel.org: savedefconfig]
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The Maxim max77802 Power Management IC is used on many Exynos machines.
Besides a bunch of regulators, this chip has a Real-Time-Clock (RTC)
and 2-channel 32kHz clock outputs.

Enable the kernel config options to have the drivers for these devices
built as a module.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
[kgene@kernel.org: removing useless REGULATOR_MAX77802 config]
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Build the spi-s3c64xx driver as a module to have support for
the SPI controller in several Samsung SoCs.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Select ARM_SINGLE_ARMV7M in defconfigs of the converted ARMv7-M
platforms.

[arnd: moved the efm32_defconfig change to the patch that
originally introduces the symbol, to avoid intermittent regression]
Signed-off-by: NStefan Agner <stefan@agner.ch>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Add defconfig for Linux on Vybrid (vf610) on the secondary Cortex-
M4 CPU. The use of a XIP image has been tested which needs to be
loaded (e.g. using the custom m4boot loader) to the end of the
available RAM at address 0x8f000000. The Cortex-M4 has a code-alias
which makes sure that the instructions get fetched through the code
bus (alias starts at 0x00800000 => 0x80800000 in system address).
Hence, to get optimal performance, use 0x0f000000 as XIP_PHYS_ADDR.
This address is additionally shifted by the length of the minimal
loader which is inserted by m4boot. Currently, this offset is 0x80.

The standard DRAM base address is configured to 0x8C000000, which
gives the Cortex-M4 48MiB of RAM.
Signed-off-by: NStefan Agner <stefan@agner.ch>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The original stm32 defconfig file looks for a ./rootfs.cpio file,
but that breaks with

  ../scripts/gen_initramfs_list.sh: Cannot open './rootfs.cpio'

when trying to build this kernel. Anybody who relies on the
current behavior should change their build scripts to append
the initramfs manually, as this patch removes that default
in order to help autmatic testing.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NMaxime Coquelin <mcoquelin.stm32@gmail.com>

The original zx defconfig file looks for a ./rootfs.cpio file,
but that breaks with

  scripts/gen_initramfs_list.sh: Cannot open 'initramfs.cpio.gz'

when trying to build this kernel. Anybody who relies on the
current behavior should change their build scripts to append
the initramfs manually, as this patch removes that default
in order to help autmatic testing.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NJun Nie <jun.nie@linaro.org>

Add the Atmel sama5d3 and sama5d4 and their peripherals to multi_v7_defconfig.

Note that the console will be ttyAT0 instead of the usual ttyS0.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

As an update of the sd/mmc DT definition needs the fixed voltage regulator, add
it to the at91 defconfigs.
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>

This patch adds a new config for STM32 MCUs.
STM32F429 Discovery board boots successfully with this config applied.
Tested-by: NChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: NMaxime Coquelin <mcoquelin.stm32@gmail.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Add basic defconfig support to zx SOC, including uart, mmc
 and other common config
Signed-off-by: NJun Nie <jun.nie@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Kernel configuration for NXP LPC18xx and LPC43xx devices.
Signed-off-by: NJoachim Eastwood <manabian@gmail.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This enables the CoreSight blocks found on the Ux500 SoC
into the Ux500 defconfig.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The Ux500 has a perfectly working PMU so let's put the perf
events into the defconfig. This will activate HW_PERF_EVENTS
by default.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Enable all drivers under CONFIG_ARM_CRYPTO as modules. Enable
CONFIG_KERNEL_MODE_NEON as well so that the modules that either
contain a NEON alternative or consist solely of a NEON (or ARMv8
crypto extensions) accelerated implementation are enabled fully as
well.

Note that the ARMv8 modules will only be built if the detected
toolchain version is recent enough (binutils 2.23 or higher).
Signed-off-by: NArd Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

The legacy-only USB_RCAR_GEN2_PHY driver was replaced by the DT-only
PHY_RCAR_GEN2 driver.
Signed-off-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Add UniPhier, a new citizen in the ARM multi platform.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

This enables the digicolor drivers that are already merged as
part of the multi_v7_defconfig file.

[arnd: change rtc and i2c to loadable modules]
Signed-off-by: NBaruch Siach <baruch@tkos.co.il>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

We cast away the volatile, but really, why make it volatile at all?
We already do a mb() inside the cpumask_empty() loop.
Signed-off-by: NRusty Russell <rusty@rustcorp.com.au>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NFathi Boudra <fathi.boudra@linaro.org>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

The GPIO controller of Hisilicon hip04 Soc uses the IP from Sysnopsis,
gpio-dwapb.c can be reused to support this GPIO controller. This patch
adds related configure item in hisi_defconfig.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NZhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: NWei Xu <xuwei5@hisilicon.com>

The Marvell mwifiex driver prevents the system to enter into a suspend
state if the card power is not preserved during a suspend/resume cycle.

So Suspend-to-RAM and Suspend-to-idle are failing on Exynos5250 Snow.

Add the keep-power-in-suspend Power Management property to the SDIO/MMC
node so the mwifiex suspend handler doesn't fail and the system is able
to enter into a suspend state.
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Reviewed-by: NDoug Anderson <dianders@chromium.org>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

Remove the extra zero in the "cpu-crit-0" trip point for exynos5420
and exynos5440.
Signed-off-by: NAbhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

The Exynos4412 SoC has a s3c6410 RTC where the source clock
is now a mandatory property.
This patch fixes probe failure of s3c-rtc on Odroid-X2/U2/U3 boards.
Signed-off-by: NMarkus Reichl <m.reichl@fivetechno.de>
Tested-by: NTobias Jakobi <tjakobi@math.uni-bielefeld.de>
Reviewed-by: NChanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Tested-by: NKrzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

Commit ea08de16 ("ARM: dts: Add DISP1 power domain for exynos5420")
added a device node for the Exynos5420 DISP1 power domain but dit not
make the DP controller a consumer of that power domain.

This causes an "Unhandled fault: imprecise external abort" error if the
exynos-dp driver tries to access the DP controller registers and the PD
was turned off. This lead to a kernel panic and a complete system hang.

Make the DP controller device node a consumer of the DISP1 power domain
to ensure that the PD is turned on when the exynos-dp driver is probed.

Fixes: ea08de16 ("ARM: dts: Add DISP1 power domain for exynos5420")
Signed-off-by: NJavier Martinez Canillas <javier.martinez@collabora.co.uk>
Signed-off-by: NKukjin Kim <kgene@kernel.org>

Select IMX50, IMX6SX and LS1021A SoC support.
Signed-off-by: NFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: NArnd Bergmann <arnd@arndb.de>

Make sure that xen_swiotlb_init allocates buffers that are DMA capable
when at least one memblock is available below 4G. Otherwise we assume
that all devices on the SoC can cope with >4G addresses. We do this on
ARM and ARM64, where dom0 is mapped 1:1, so pfn == mfn in this case.

No functional changes on x86.

From: Chen Baozi <baozich@gmail.com>
Signed-off-by: NChen Baozi <baozich@gmail.com>
Signed-off-by: NStefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-by: NChen Baozi <baozich@gmail.com>
Acked-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>

The following commit:

  f893959b ("x86/fpu: Don't abuse drop_init_fpu() in flush_thread()")

removed drop_init_fpu() usage from flush_thread(). This seems to break
things for me - the Go 1.4 test suite fails all over the place with
floating point comparision errors (offending commit found through
bisection).

The functional change was that flush_thread() after this commit
only calls restore_init_xstate() when both use_eager_fpu() and
!used_math() are true. drop_init_fpu() (now fpu_reset_state()) calls
restore_init_xstate() regardless of whether current used_math() - apply
the same logic here.

Switch used_math() -> tsk_used_math(tsk) to consistently use the grabbed
tsk instead of current, like in the rest of flush_thread().
Tested-by: NDave Hansen <dave.hansen@intel.com>
Signed-off-by: NBobby Powers <bobbypowers@gmail.com>
Signed-off-by: NBorislav Petkov <bp@suse.de>
Acked-by: NOleg Nesterov <oleg@redhat.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Pekka Riikonen <priikone@iki.fi>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: f893959b ("x86/fpu: Don't abuse drop_init_fpu() in flush_thread()")
Link: http://lkml.kernel.org/r/1430147441-9820-1-git-send-email-bobbypowers@gmail.comSigned-off-by: NIngo Molnar <mingo@kernel.org>

Commit 75182b16 ("x86/asm/entry: Switch all C consumers of
kernel_stack to this_cpu_sp0()") changed current_thread_info
to use this_cpu_sp0, and indirectly made it rely on init_tss
which was exported with EXPORT_PER_CPU_SYMBOL_GPL.
As a result some macros and inline functions such as set/get_fs,
test_thread_flag and variants have been made unusable for
external modules.

Make cpu_tss exported with EXPORT_PER_CPU_SYMBOL so that these
functions are accessible again, as they were previously.
Signed-off-by: NMarc Dionne <marc.dionne@your-file-system.com>
Acked-by: NAndy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/1430763404-21221-1-git-send-email-marc.dionne@your-file-system.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

Commit 61f01dd9 ("x86_64, asm: Work around AMD SYSRET SS descriptor
attribute issue") makes AMD processors set SS to __KERNEL_DS in
__switch_to() to deal with cases when SS is NULL.

This breaks Xen PV guests who do not want to load SS with__KERNEL_DS.

Since the problem that the commit is trying to address would have to be
fixed in the hypervisor (if it in fact exists under Xen) there is no
reason to set X86_BUG_SYSRET_SS_ATTRS flag for PV VPCUs here.

This can be easily achieved by adding x86_hyper_xen_hvm.set_cpu_features
op which will clear this flag. (And since this structure is no longer
HVM-specific we should do some renaming).
Signed-off-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com>
Reported-by: NSander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: NDavid Vrabel <david.vrabel@citrix.com>

Changes contributed by Marcel Ziswiler <marcel.ziswiler@toradex.com>:

  Enable HDA to support audio over HDMI and codecs connected to the HDA
  controller (needed by the Toradex Apalis Tegra30 Evaluation Board):
  - SND_HDA
  - SND_HDA_TEGRA
  - SND_HDA_INPUT_BEEP
  - SND_HDA_INPUT_JACK
  - SND_HDA_PATCH_LOADER
  - SND_HDA_CODEC_REALTEK
  - SND_HDA_CODEC_HDMI
  - SND_HDA_GENERIC

  Enable watchdog support:
  - WATCHDOG
  - TEGRA_WATCHDOG
Signed-off-by: NThierry Reding <treding@nvidia.com>

A spinlock is regarded as contended when there is at least one waiter.
Currently, the code that checks whether there are any waiters rely on
tail value being greater than head. However, this is not true if tail
reaches the max value and wraps back to zero, so arch_spin_is_contended()
incorrectly returns 0 (not contended) when tail is smaller than head.

The original code (before regression) handled this case by casting the
(tail - head) to an unsigned value. This change simply restores that
behavior.

Fixes: d6abfdb2 ("x86/spinlocks/paravirt: Fix memory corruption on unlock")
Signed-off-by: NTahsin Erdogan <tahsin@google.com>
Cc: peterz@infradead.org
Cc: Waiman.Long@hp.com
Cc: borntraeger@de.ibm.com
Cc: oleg@redhat.com
Cc: raghavendra.kt@linux.vnet.ibm.com
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/1430799331-20445-1-git-send-email-tahsin@google.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>