This reverts commit 313b9a99.

This was already fixed by
commit bf62efeb
"gpio: pca954x: fix undefined error code from remove"

The latter is a better fix since it makes it easier to detect
erronous code by not assigning a default error code.
Reported-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The build complains about missing MODULE_LICENSE() in
the Aspeed GPIO driver. The license is evident from the
file header, put in "GPL".
Reported-by: NStephen Rothwell <sfr@canb.auug.org.au>
Cc: Alistair Popple <alistair@popple.id.au>
Cc: Jeremy Kerr <jk@ozlabs.org>
Cc: Andrew Jeffery <andrew@aj.id.au>
Acked-by: NJoel Stanley <joel@jms.id.au>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Follow DT and forbid default trigger if the GPIO irqchip device is
enumerated from ACPI. Triggering for these devices will be configured
automatically from ACPI interrupt resources provided by the BIOS.
Suggested-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NMika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

These structures are only used to copy into other structures, so declare
them as const.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r disable optional_qualifier@
identifier i;
position p;
@@
static struct gpio_chip i@p = { ... };

@ok@
identifier r.i;
expression e;
position p;
@@
e = i@p;

@bad@
position p != {r.p,ok.p};
identifier r.i;
struct gpio_chip e;
@@
e@i@p

@depends on !bad disable optional_qualifier@
identifier r.i;
@@
static
+const
 struct gpio_chip i = { ... };
// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Acked-by: NJoachim Eastwood <manabian@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Use devm_gpiochip_add_data() for GPIO registration and remove the need
of driver callback .remove.
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Merge tag 'ib-mfd-gpio-regulator-v4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into devel

Immutable branch between MFD, GPIO and Regulator due for the v4.9 merge window

Linux 4.8-rc2

ret is not initialized so it contains garbage.  Ensure garbage
is not returned in the case that pdata && pdata->teardown is false
by initializing ret to 0.
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This patch switches the driver to use the generic GPIO MMIO functions
that removes a bit of redundant and duplicate code.
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Both gpio_export and gpio_free APIs are obsolete now.
Signed-off-by: NAmitesh Singh <singh.amitesh@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

pca953x_gpio_set_multiple() has some coding style issues that make it
harder to read. Tweak the code a bit.
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The chip_type variable in struct pca953x_chip is no longer required.

Remove it.
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Avoid the unnecessary if-else in pca953x_read_regs() by spltting the
routine into smaller, specialized functions and calling the right one
via a function pointer held in struct pca953x.
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Avoid the unnecessary if-else in pca953x_write_regs() by splitting
the routine into smaller, specialized functions and calling the right
one via a function pointer held in struct pca953x_chip.
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

There are multiple places in the driver code where a
switch (chip->chip_type) is used to determine the proper register
offset.

Unduplicate the code by adding a simple structure holding the possible
offsets that differ between the pca953x and pca957x chip families and
use it to avoid the checks.
Signed-off-by: NBartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: NAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

ARM LPC32xx platform is device-tree only, there is no need to keep
a file with GPIO platform data structures, however some of macro
definitions should be moved to the driver code, which is the only user
of the removed header file.
Signed-off-by: NVladimir Zapolskiy <vz@mleia.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Using a default trigger is a bad idea if using DT to configure
interrupts, as the device's interrupt specifier will always contain
the trigger configuration.

Let's warn about that particular situation, and revert to not
having a default. Hopefully, the couple of drivers still using
this feature will quickly be fixed.
Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

R-Car Gen3's GPIO blocks are identical to Gen2's in every respect.

Based on work for the r8a7795 (R-Car H3) by Ulrich Hecht.

Cc: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: NSimon Horman <horms+renesas@verge.net.au>
Reviewed-by: NGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Orion GPIO controller binding description in mrvl-gpio.txt is obsolete, and
duplicates the description in gpio-mvebu.txt.
Signed-off-by: NBaruch Siach <baruch@tkos.co.il>
Reviewed-by: NAndrew Lunn <andrew@lunn.ch>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Aspeed SoCs contain GPIOs banked by letter, where each bank contains
8 pins. The GPIO banks are then grouped in sets of four in the register
layout.

The implementation exposes multiple banks through the one driver and
requests and releases pins via the pinctrl subsystem. The hardware
supports generation of interrupts from all GPIO-capable pins.

A number of hardware features are not yet supported: Configuration of
interrupt direction (ARM or LPC), debouncing, and WDT reset tolerance
for output ports.
Signed-off-by: NJoel Stanley <joel@jms.id.au>
Signed-off-by: NAlistair Popple <alistair@popple.id.au>
Signed-off-by: NJeremy Kerr <jk@ozlabs.org>
Signed-off-by: NAndrew Jeffery <andrew@aj.id.au>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Signed-off-by: NAndrew Jeffery <andrew@aj.id.au>
Acked-by: NJoel Stanley <joel@jms.id.au>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The recent addition of the regulator support has led to the pca953x_remove
function returning uninitialized data when no platform data pointer is
provided, as gcc warns when using -Wmaybe-uninitialized:

drivers/gpio/gpio-pca953x.c: In function 'pca953x_remove':
drivers/gpio/gpio-pca953x.c:860:9: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]

This restores the previous behavior, returning 0 on success.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Fixes: e23efa31 ("gpio: pca954x: Add vcc regulator and enable it")
Acked-by: NPhil Reid <preid@electromag.com.au>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Change the MFD config option as per latest naming
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Acked-by: NMark Brown <broonie@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Add driver for lp873x PMIC family GPOs. Two GPOs are supported
and can be configured in Open-drain output or Push-pull output.
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

The LP873X chip is a power management IC for Portable Navigation Systems
    and Tablet Computing devices. It contains the following components:

     - Regulators.
     - Configurable General Purpose Output Signals (GPO).

PMIC interacts with the main processor through i2c. PMIC has
couple of LDOs (Linear Regulators), couple of BUCKs (Step-Down DC-DC
Converter Cores) and GPOs (General Purpose Output Signals).
Signed-off-by: NKeerthy <j-keerthy@ti.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Add binding for TPIC2810 GPO device.
Signed-off-by: NAndrew F. Davis <afd@ti.com>
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Kconfig currently controlling compilation of this code is:

drivers/gpio/Kconfig:config GPIO_VF610
drivers/gpio/Kconfig:   def_bool y

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

We delete the MODULE_LICENSE tag etc. since all that information
is now contained at the top of the file in the comments.

We don't replace module.h with init.h since the file already has that.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Kconfig currently controlling compilation of this code is:

drivers/gpio/Kconfig:config GPIO_SPEAR_SPICS
drivers/gpio/Kconfig:   bool "ST SPEAr13xx SPI Chip Select as GPIO support"

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

We delete the MODULE_LICENSE tag etc. since all that information
is now contained at the top of the file in the comments.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Shiraz Hashim <shiraz.linux.kernel@gmail.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Kconfig currently controlling compilation of this code is:

drivers/gpio/Kconfig:config GPIO_MXC
drivers/gpio/Kconfig:   def_bool y

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

We delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.
Note the original e-mail had a missing/typo'd @ symbol anyway.

We don't replace module.h with init.h since the file already has that.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Daniel Mack <daniel@caiaq.de>
Cc: Juergen Beisert <kernel@pengutronix.de>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The Kconfig currently controlling compilation of this code is:

drivers/gpio/Kconfig:config GPIO_MSIC
drivers/gpio/Kconfig:   bool "Intel MSIC mixed signal gpio support"

...meaning that it currently is not being built as a module by anyone.

Lets remove the couple traces of modular infrastructure use, so that
when reading the driver there is no doubt it is builtin-only.

We delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

We don't replace module.h with init.h since the file already has that.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Mathias Nyman <mathias.nyman@linux.intel.com>
Cc: linux-gpio@vger.kernel.org
Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This patch adds .get_direction method for the gpio_chip structure
of the wcove_gpio driver.
Signed-off-by: NBin Gao <bin.gao@intel.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This driver is generic and aims to support all Technologic Systems's
boards embedding FPGA GPIOs with an I2C interface.

This driver supports TS-4900, TS-7970, TS-7990 and TS-4100 series.
Signed-off-by: NLucile Quirion <lucile.quirion@savoirfairelinux.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Device tree binding documentation for Technologic's I2C-FPGA GPIO
controller.
Signed-off-by: NLucile Quirion <lucile.quirion@savoirfairelinux.com>
[Quirked in a reference to gpio.txt]
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

This binding is no longer correct, the GPIO information can should be
added to the parent node and not into this child node. See
Documentation/devicetree/bindings/mfd/tps65086.txt for the correct usage.
Signed-off-by: NAndrew F. Davis <afd@ti.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

The if...else... block after the loop can be dropped with
a slight refactoring.
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>

Pull thermal updates from Zhang Rui:

 - Fix a race condition when updating cooling device, which may lead to
   a situation where a thermal governor never updates the cooling
   device.  From Michele Di Giorgio.

 - Fix a zero division error when disabling the forced idle injection
   from the intel powerclamp.  From Petr Mladek.

 - Add suspend/resume callback for intel_pch_thermal thermal driver.
   From Srinivas Pandruvada.

 - Another two fixes for clocking cooling driver and hwmon sysfs I/F.
   From Michele Di Giorgio and Kuninori Morimoto.

[ Hmm.  That suspend/resume callback for intel_pch_thermal doesn't look
  like a fix, but I'm letting it slide..  - Linus ]

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  thermal: clock_cooling: Fix missing mutex_init()
  thermal: hwmon: EXPORT_SYMBOL_GPL for thermal hwmon sysfs
  thermal: fix race condition when updating cooling device
  thermal/powerclamp: Prevent division by zero when counting interval
  thermal: intel_pch_thermal: Add suspend/resume callback

Pull m68knommu fix from Greg Ungerer:
 "This contains only a single fix for a register corruption problem on
  certain types of m68k flat format binaries"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68knommu: fix user a5 register being overwritten

Merge tag 'fixes-for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull h8300 and unicore32 architecture fixes from Guenter Roeck:
 "Two patches to fix h8300 and unicore32 builds.

  unicore32 builds have been broken since v4.6.  The fix has been
  available in -next since March of this year.

  h8300 builds have been broken since the last commit window.  The fix
  has been available in -next since June of this year"

* tag 'fixes-for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  h8300: Add missing include file to asm/io.h
  unicore32: mm: Add missing parameter to arch_vma_access_permitted

Pull arm64 fixes from Catalin Marinas:

 - support for nr_cpus= command line argument (maxcpus was previously
   changed to allow secondary CPUs to be hot-plugged)

 - ARM PMU interrupt handling fix

 - fix potential TLB conflict in the hibernate code

 - improved handling of EL1 instruction aborts (better error reporting)

 - removal of useless jprobes code for stack saving/restoring

 - defconfig updates

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: defconfig: enable CONFIG_LOCALVERSION_AUTO
  arm64: defconfig: add options for virtualization and containers
  arm64: hibernate: handle allocation failures
  arm64: hibernate: avoid potential TLB conflict
  arm64: Handle el1 synchronous instruction aborts cleanly
  arm64: Remove stack duplicating code from jprobes
  drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property
  drivers/perf: arm-pmu: convert arm_pmu_mutex to spinlock
  arm64: Support hard limit of cpu count by nr_cpus