Interrupt request doesn't use the right API: The TWD watchdog uses a per-cpu
interrupt (usually interrupt #30), and the GIC configuration should flag it as
such. With this setup, request_irq() should fail, and the right API is
request_percpu_irq(), together with enable_percpu_irq()/disable_percpu_irq().

Nothing ensures the userspace ioctl() will end-up kicking the watchdog on the
right CPU.

There are no users of this driver since a long time and it makes more sense to
get rid of it as nobody is looking to fix it.

In case somebody wakes up after this has been removed and needs it, please
revert this driver and pick these updates (These were never pushed to mainline):

http://comments.gmane.org/gmane.linux.ports.arm.kernel/245998Signed-off-by: NViresh Kumar <viresh.kumar@linaro.org>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add watchdog timer support for the on-board PLD found on some Kontron
embedded modules.

Originally-From: Michael Brunner <michael.brunner@kontron.com>
Signed-off-by: NKevin Strasser <kevin.strasser@linux.intel.com>
Acked-by: NGuenter Roeck <linux@roeck-us.net>
Acked-by: NDarren Hart <dvhart@linux.intel.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Now that the new driver is in place, we can remove the old one.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Replace the existing STMP3xxx driver because it has enough drawbacks
that a rewrite is apropriate. The new driver is designed to use the
watchdog framework which makes it a lot smaller and avoids open coding
the watchdog API again. It also uses now an explicitly exported function
from the RTC driver to set up its registers (the old driver silently
reused the hopefully(!) already remapped RTC registers). Also, this
driver is mach independent, while the old one depends on a mach replaced
by another one a year ago. Since the user interface is still the
standard watchdog API, users don't need to adapt.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Introduce Retu watchdog driver.

Cc: linux-watchdog@vger.kernel.org
Acked-by: NFelipe Balbi <balbi@ti.com>
Acked-by: NTony Lindgren <tony@atomide.com>
Signed-off-by: NAaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch adds support for the ux500_wdt watchdog that is found in
ST-Ericsson Ux500 platform.  The driver is based on PRCMU APIs.
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Acked-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NFabio Baltieri <fabio.baltieri@linaro.org>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This is the Watchdog patch for the DA9055 PMIC. This patch has got dependency on
the DA9055 MFD core.

This patch is functionally tested on SMDK6410
Signed-off-by: NDavid Dajun Chen <dchen@diasemi.com>
Signed-off-by: NAshish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This driver adds support for the watchdog functionality provided by
the Dialog Semiconductor DA9052 PMIC chip.

Tested on samsung smdkv6410 and i.mx53 QS boards.
Signed-off-by: NAnthony Olech <Anthony.Olech@diasemi.com>
Signed-off-by: NAshish Jangam <ashish.jangam@kpitcummins.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add driver for the watchdog timer built into the
Intel Atom E6XX (TunnelCreek) processor.
Signed-off-by: NAlexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The platform is removed, so there are no users of this driver.
Signed-off-by: NRob Herring <rob.herring@calxeda.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

New driver for the hardware watchdog timer on VIA chipsets.
This driver uses the new watchdog framework.
PnP must be enabled in BIOS to get full control of watchdog registers.
The timer code has been added by Wim Van Sebroeck.
Tested on a Artigo A1100, VX855 chipset.
Signed-off-by: NMarc Vertes <marc.vertes@sigfox.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Remove the driver (that was added in v2.6.32) since the architecture
has never been merged into mainline.
Reported-by: NPaul Bolle <pebolle@tiscali.nl>
Acked-by: NThierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The WatchDog Timer Driver Core is a framework
that contains the common code for all watchdog-driver's.
It also introduces a watchdog device structure and the
operations that go with it.

This is the introduction of this framework. This part
supports the minimal watchdog userspace API (or with
other words: the functionality to use /dev/watchdog's
open, release and write functionality as defined in
the simplest watchdog API). Extra functionality will
follow in the next set of patches.
Signed-off-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Acked-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>

Watchdog timer device driver for Xilinx xps_timebase_wdt compatible ip cores.
It takes watchdog timer configuration from device tree and it needs that its
parent has defined the property "clock-frecuency".
It is compatible with watchdog timer kernel API, so user apps like watchdogd
may talk with it.
Signed-off-by: NAlejandro Cabrera <aldaya@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The Synopsys DesignWare watchdog is found in several ARM based systems
and provides a choice of 16 timeout periods depending on the clock
input.  The watchdog cannot be disabled once started.
Signed-off-by: NJamie Iles <jamie@jamieiles.com>
Acked-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch adds the driver for the watchdog found inside the Lantiq SoC family.
Signed-off-by: NJohn Crispin <blogic@openwrt.org>
Signed-off-by: NRalph Hempel <ralph.hempel@lantiq.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: linux-mips@linux-mips.org
Cc: linux-watchdog@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2327/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>

While the hypervisor change adding SCHEDOP_watchdog support included a
daemon to make use of the new functionality, having a kernel driver
for /dev/watchdog so that user space code doesn't need to distinguish
non-Xen and Xen seems to be preferable.
Signed-off-by: NJan Beulich <jbeulich@novell.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This submission includes:
  - Fix to intel_scu_write() to start watchdog timer the on the
    first write, and refresh on subsequent writes.
    This enables Open, write, write, ... usage model.
  - Moves boot parameter checks from intel_scu_open() to
    intel_scu_watchdog_init(), so driver init will fail if these
    parameters are out of bounds.
  - Adds check for whether process waiting in wait_event_interruptible()
    received a signal while it was waiting.
  - Other small error handling changes.

Removed the read() method for now as that wass a non-standard behaviour.
Signed-off-by: NDonald Johnson <donald.k.johnson@intel.com>
Signed-off-by: NShuduo Sang <shuduo.sang@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Adds support for the hardware watchdog found in Ingenic's jz4740
System-on-Chip.
Signed-off-by: NPaul Cercueil <paul@crapouillou.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

All m548x files were renamed to m54xx, except m548x_wdt.c.  Fix that.
Signed-off-by: NPhilippe De Muyter <phdm@macqel.be>
Signed-off-by: NGreg Ungerer <gerg@uclinux.org>

Add watchdog driver for MCF548x.
Signed-off-by: NPhilippe De Muyter <phdm@macqel.be>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch adds a driver for the built-in hardware watchdog device
of the Atheros AR71XX/AR724X/AR913X SoCs.
Signed-off-by: NGabor Juhos <juhosg@openwrt.org>
Signed-off-by: NImre Kaloz <kaloz@openwrt.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This driver adds support for /dev/watchdog for boards using either the MCP51 or
MCP55 chipsets.  These are also known as the nForce 430 and nForce 550.  This
driver is likely to work on other chipsets as well, though those are the only
two that have been tested.
Signed-off-by: NMike Waychison <mikew@google.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This driver adds /dev/watchdog support for the AMD sp5100 aka SB7x0 chipsets.

It follows the same conventions found in other /dev/watchdog drivers.
Signed-off-by: NPriyanka Gupta <priyankag@google.com>
Signed-off-by: NMike Waychison <mikew@google.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch adds support for the Broadcom BCM63xx SoC built-in watchdog, it
uses one of the BCM63xx hardware timer id.
Signed-off-by: NMiguel Gaio <miguel.gaio@efixo.com>
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Technical Reference Manual can be found at:
http://infocenter.arm.com/help/topic/com.arm.doc.ddi0270b/DDI0270.pdfSigned-off-by: NViresh Kumar <viresh.kumar@st.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add a new watchdog driver for the Fintek F71808E and F71882FG Super I/O
controllers.
Signed-off-by: NGiel van Schijndel <me@mortis.eu>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The OCTEON is a MIPS64 based SOC family with an on chip watchdog unit.

The driver is split into two source files one for the C code and one
for assembly.  Assembly is needed to handle the NMI and then print the
machine state before the reboot is triggered.
Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Marc Zyngier <maz@misterjones.org>
Cc: Thierry Reding <thierry.reding@avionic-design.de>
Cc: Sam Ravnborg <sam@ravnborg.org>
To: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org,
Patchwork: https://patchwork.linux-mips.org/patch/1503/Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

 create mode 100644 drivers/watchdog/octeon-wdt-main.c
 create mode 100644 drivers/watchdog/octeon-wdt-nmi.S

This is the driver for the hardware watchdog on the Freescale IMX2 and later processors.
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Cc: Vladimir Zapolskiy <vzapolskiy@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Tested-by: NJuergen Beisert <jbe@pengutronix.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This driver adds support for the max63{69,70,71,72,73,74} family of
watchdog timer chips.

It has been tested on an Arcom Zeus (max6369).
Signed-off-by: NMarc Zyngier <maz@misterjones.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Technologic Systems TS-72xx SBCs have external glue logic
CPLD which includes watchdog timer. This driver implements
kernel support for that.
Signed-off-by: NMika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The platform has never been fully merged 
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Cc: Thomas Koeller <thomas.koeller@baslerweb.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Wim Van Sebroeck <wim@iguana.be>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mtd@lists.infradead.org
Acked-by: NDavid Woodhouse <David.Woodhouse@intel.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>

Remove the old WDT implementation.
Signed-off-by: NAlbrecht Dreß <albrecht.dress@arcor.de>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This patch adds support for the watchdog timer on Avionic Design Xanthos
boards.
Signed-off-by: NThierry Reding <thierry.reding@avionic-design.de>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The WM831x series of devices provide a watchdog with configurable
behaviour on timer expiry.

Currently this driver support refreshes via a register or GPIO line and
autonomous refreshes from a hardware source (eg, a clock).
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add watchdog device driver for the Nuvoton NUC900 series SoCs.
Signed-off-by: NWan ZongShun <mcuos.com@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add support for watchdog found on SBC-FITPC2 board.
Signed-off-by: NDenis Turischev <denis@compulab.co.il>
Signed-off-by: NMike Rapoport <mike@compulab.co.il>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

This add watchdog driver for broadcom 47xx device.
It uses the ssb subsytem to access embeded watchdog device.

Because the watchdog timeout is very short (about 2s), a soft timer is used
to increase the watchdog period.

Note : A patch for exporting the ssb_watchdog_timer_set will
be submitted on next linux-mips merge. Without this patch it can't 
be build as a module.
Signed-off-by: NAleksandar Radovanovic <biblbroks@sezampro.rs>
Signed-off-by: NMatthieu CASTET <castet.matthieu@free.fr>
Tested-by: NFlorian Fainelli <florian@openwrt.org>
Cc: Ralf Baechle <ralf@linux-mips.org>                                                                                       
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

Add watchdog timer support for Freescale STMP3xxx boards
Signed-off-by: NVitaly Wool <vital@embeddedalley.com>
Signed-off-by: NDmitry Pervushin <dpervushin@embeddedalley.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>