On MPC86xx the watchdog could be enabled only at power-on-reset, and could
not be disabled afterwards.  We must ping the watchdog from the kernel
until the userspace handles it.

MPC83xx CPUs are only differ in a way that watchdog could be disabled
once, but after it was enabled via software it becomes just the same as
MPC86xx.

Thus, to support MPC86xx I added the kernel timer which pings the watchdog
until the userspace opens it.

Since we implemented the timer, now we're able to implement proper
handling for the CONFIG_WATCHDOG_NOWAYOUT case, for MPC83xx and MPC86xx.

Also move the probe code into subsys_initcall, because we want start
pinging the watchdog ASAP, and misc devices are available in
subsys_initcall.
Signed-off-by: NAnton Vorontsov <avorontsov@ru.mvista.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

Trying to compile the v850 port brings many compile errors, one of them exists
since at least kernel 2.6.19.

There also seems to be noone willing to bring this port back into a usable
state.

This patch therefore removes the v850 port.

If anyone ever decides to revive the v850 port the code will still be
available from older kernels, and it wouldn't be impossible for the port to
reenter the kernel if it would become actively maintained again.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Acked-by: NGreg Ungerer <gerg@uclinux.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add a watchdog timer based on the MFGPT timers in the CS5535/CS5536
companion chips to the AMD Geode GX and LX processors.  Only caveat
is that the BIOS must provide at least a one free timer, and most
do not.
Signed-off-by: NJordan Crouse <jordan.crouse@amd.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Hp is providing a Hardware WatchDog Timer driver that will only work with the
specific HW Timer located in the HP ProLiant iLO 2 ASIC. The iLO 2 HW Timer
will generate a Non-maskable Interrupt (NMI) 9 seconds before physically
resetting the server, by removing power, so that the event can be logged to
the HP Integrated Management Log (IML), a Non-Volatile Random Access Memory
(NVRAM). The logging of the event is performed using the HP ProLiant ROM via
an Industry Standard access known as a BIOS Service Directory Entry.
Signed-off-by: NThomas Mingarelli <thomas.mingarelli@hp.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Support watchdog timers built into SiByte MIPS SoCs.
Signed-off-by: NAndy Sharp <andy.sharp@onstor.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

Use SGI_HAS_INDYDOG for INDYDOG depends.
Signed-off-by: NThomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

This is a driver for watchdog timer built into TXx9 MIPS SoCs.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
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>

These are derivatives of the AT32AP7000 chip, which means that most of
the code stays the same. Rename a few files, functions, definitions
and config symbols to reflect that they apply to all AP700x chips, and
exclude some platform devices from chips where they aren't present.
Signed-off-by: NHaavard Skinnemoen <hskinnemoen@atmel.com>

Adds support for the built-in watchdog on EPIC Nano 7240 boards from IEI.

Tested on Nano-7240RS.

Hardware documentation of the platform (including watchdog) can be found
on the IEI website: http://www.ieiworld.comSigned-off-by: NGilles Gigan <gilles.gigan@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch adds support for the ITE Tech Inc. IT8712F EC-LPC Super I/O 
chipset found on many Pentium III and AMD motherboards. Developed using code 
from other watchdog drivers and the datasheet on ITE Tech homepage.
Signed-off-by: NJorge Boncompte <jorge@dti2.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Fix links to files in Documentation/* in various Kconfig files
Signed-off-by: NDirk Hohndel <hohndel@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Driver for the watchdog timer. Still doesn't reboots the machine
on some boards, but we have improved and cleaned it
Signed-off-by: NMatteo Croce <technoboy85@gmail.com>
Signed-off-by: NNicolas Thill <nico@openwrt.org>
Signed-off-by: NEnrik Berkhan <Enrik.Berkhan@akk.org>
Signed-off-by: NChrister Weinigel <wingel@nano-system.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

ICP's Wafer 5823 SBC has, as far as I can tell, the same WDT as many,
if not all ICP's SBC's (that do have a WDT). I have tested it with
several boards, including Rocky 4783, Rocky 3703 and Rocky 3782. 

I propose a rename of the  Wafer 5823 watchdog timer driver
to something like "IPC (SBC) Watchdog Timer", to reflect that it
works with other IPC boards (maybe even all of them).
Signed-off-by: NVeljkovic Srdjan <sveljko@gvs.co.yu>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

move watchdog tree from drivers/char/watchdog to drivers/watchdog.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Clean-up of the watchdog's Kconfig and makefile files.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add watchdog support for TI Davinci DM644x/DM646x processors.

Signed-off-by: Vladimir Barinov <vbarinov@ru.mvista.com> 
Signed-off-by: Kevin Hilman <khilman@mvista.com> 
Signed-off-by: Wim Van Sebroeck <wim@iguana.be> 

This patch implements the driver necessary use the Analog Devices
Blackfin processor's on-chip watchdog controller, supports
BF53[123]/BF53[467]/BF54[2489]/BF561.
Signed-off-by: NMike Frysinger <michael.frysinger@analog.com>
Signed-off-by: NBryan Wu <bryan.wu@analog.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Driver for internal mpc5200 watchdog on general purpose timer 0.
For IPB clock of 132 MHz the maximum timeout is about 32 seconds.
Signed-off-by: NDomen Puncer <domen.puncer@telargo.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

In order for this driver to be shared across the iop architectures the
iop3xx and iop13xx header files are modified to present a common interface
for the iop_wdt driver.

Details:
* iop13xx supports disabling the timer while iop3xx does not.  This requires
  a few 'compatibility' definitions in include/asm-arm/hardware/iop3xx.h to
  preclude adding #ifdef CONFIG_ARCH_IOP13XX blocks to the driver code.
* The heartbeat interval is derived from the internal bus clock rate, so this
  this patch also exports the tick rate to the iop_wdt driver.

Cc: Curt Bruns <curt.e.bruns@intel.com>
Cc: Peter Milne <peter.milne@d-tacq.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>
Acked-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Both shwdt and rtc-sh are only supported on SH-3 and SH-4 at
the moment, don't allow them to break the SH-2 and SH-5 (sh64)
builds.
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>

integrate the timeout/heartbeat as a module parameter and not as
a CONFIG_* value.
Signed-off-by: NHans-Christian Egtvedt <hcegtvedt@atmel.com>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Cc: Andrew Morton <akpm@linux-foundation.org>

Add support for the built in watchdog in AT32AP700X devices.

Tested on AT32AP7000 and ATSTK1000.

Hardware documentation can be found in the AT32AP7000 datasheet.
Signed-off-by: NHans-Christian Egtvedt <hcegtvedt@atmel.com>
Signed-off-by: NHaavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>

Watchdog driver for the Kendin/Micrel KS8695 processor.
Signed-off-by: NAndrew Victor <andrew@sanpeople.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch adds support for the MTX-1 boards watchdog. If not available the
board will reboot every 100 seconds. It uses the Linux watchdog and timer
APIs.
Signed-off-by: NFlorian Fainelli <florian.fainelli@int-evry.fr>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Change Kconfig objects from "menu, config" into "menuconfig" so
that the user can disable the whole feature without having to
enter the menu first.
Signed-off-by: NJan Engelhardt <jengelh@gmx.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This patch contains the scheduled removal of the i8xx_tco watchdog 
driver.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Remove option of making booke_wdt into a kernel module. This watchdog
cannot be disabled. No point being a kernel module.
Signed-off-by: NDave Jiang <djiang@mvista.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

Mark the i8xx TCO driver for removal.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

This is a driver for the on-chip watchdog device found on some
MIPS RM9000 processors.
Signed-off-by: NThomas Koeller <thomas.koeller@baslerweb.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add vendor specific support to the intel TCO timer based watchdog
devices. At this moment we only have additional support for some
SuperMicro Inc. motherboards.
Signed-off-by: NRobert Seretny <lkpatches@paypc.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

New watchdog driver for the NS pc87413-wdt Watchdog Timer.
Signed-off-by: NSven Anders <anders@anduras.de>
Signed-off-by: NMarcus Junker <junker@anduras.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The iTCO_wdt.c driver has been tested enough. So we can
remove the experimental classification.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

The new Atmel AT91SAM9261 and AT91SAM9260 processors use a different
internal watchdog peripheral.  This watchdog driver is therefore
AT91RM9200-specific.

This patch renames at91_wdt.c to at91rm9200_wdt.c, and changes the name
of the configuration option.
Signed-off-by: NAndrew Victor <andrew@sanpeople.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Update Kconfig for the w83697hf/hg watchdog driver.
Signed-off-by: NSamuel Tardieu <sam@rfc1149.net>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

fixed some more trailing spaces.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

* fix typo's according to spellings checker
* Fix some leading and trailing spaces
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

New watchdog driver for the Winbond W83697HF chipset.
Signed-off-by: NMarcus Junker <junker@anduras.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

New watchdog driver for the Winbond SMsC37B787 chipset.
Signed-off-by: NSven Anders <anders@anduras.de>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Hardware driver for the intel TCO timer based watchdog devices.
These drivers are included in the Intel 82801 I/O Controller
Hub family (from ICH0 up to ICH7) and in the Intel 6300ESB
controller hub.

This driver will replace the i8xx_tco.c driver.
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>

Add watchdog support for Philips PNX4008 ARM board inlined.
Signed-off-by: NVitaly Wool <vitalywool@gmail.com>
Signed-off-by: NWim Van Sebroeck <wim@iguana.be>