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2018-04-14Merge tag 'linux-watchdog-4.17-rc1' of ↵Linus Torvalds1-0/+1
git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - Add Nuvoton NPCM watchdog driver - renesas_wdt: Add R-Car Gen2 support - renesas_wdt: add suspend/resume and restart handler support - hpwdt: convert to watchdog core and improve NMI - improve timeout setting/handling in various drivers - coh901327: make license text and module licence match - fix error handling in asm9260_wdt, sprd_wdt and davinci_wdt - aspeed imrovements - dw improvements (for control register & suspend/resume) - add SPDX identifiers for watchdog subsystem * tag 'linux-watchdog-4.17-rc1' of git://www.linux-watchdog.org/linux-watchdog: (35 commits) watchdog: davinci_wdt: fix error handling in davinci_wdt_probe() watchdog: add SPDX identifiers for watchdog subsystem watchdog: aspeed: Allow configuring for alternate boot watchdog: Add Nuvoton NPCM watchdog driver dt-bindings: watchdog: Add Nuvoton NPCM description watchdog: dw: save/restore control and timeout across suspend/resume watchdog: dw: RMW the control register watchdog: sprd_wdt: Fix error handling in sprd_wdt_enable() watchdog: aspeed: Fix translation of reset mode to ctrl register watchdog: renesas_wdt: Add restart handler watchdog: renesas_wdt: Add R-Car Gen2 support watchdog: renesas_wdt: Add suspend/resume support watchdog: f71808e_wdt: Fix WD_EN register read watchdog: hpwdt: Update driver version. watchdog: hpwdt: Add dynamic debug watchdog: hpwdt: Programable Pretimeout NMI watchdog: hpwdt: remove allow_kdump module parameter. watchdog: hpwdt: condition early return of NMI handler on iLO5 watchdog: hpwdt: Modify to use watchdog core. watchdog: hpwdt: Update nmi_panic message. ...
2018-03-26watchdog: remove bfin_wdt driverArnd Bergmann1-3/+0
The blackfin architecture is getting removed, so this driver has become obsolete. Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Aaron Wu <aaron.wu@analog.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26treewide: simplify Kconfig dependencies for removed archsArnd Bergmann1-6/+0
A lot of Kconfig symbols have architecture specific dependencies. In those cases that depend on architectures we have already removed, they can be omitted. Acked-by: Kalle Valo <kvalo@codeaurora.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-24watchdog: Add Nuvoton NPCM watchdog driverJoel Stanley1-0/+1
The Nuvoton NPCM750 has a watchdog implemented as a single register inside the timer peripheral. This driver exposes that watchdog as a standard watchdog device with coarse timeout intervals, limited by the combination of prescaler and counter that is provided by the hardware. The calculation is taken from the Nuvoton vendor tree. The watchdog is left running if a bootloader had it going. The rate is the one specified in the device tree, or the default value (obtained from the datasheet). There is a pre-timeout IRQ that is wired up. This timeout always occurs 1024 clocks before the timeout. Signed-off-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2018-02-07Merge tag 'linux-watchdog-4.16-rc1' of ↵Linus Torvalds1-4/+3
git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - new watchdog device drivers for Realtek RTD1295 and Spreadtrum SC9860 platform - add support for the following devices: jz4780 SoC, AST25xx series SoC and r8a77970 SoC - convert to watchdog framework: i6300esb_wdt, xen_wdt and sp5100_tco - several fixes for watchdog core - remove at32ap700x and obsolete documentation - gpio: Convert to use GPIO descriptors - rename gemini into FTWDT010 as this IP block is generc from Faraday Technology - various clean-ups and small bugfixes - add Guenter Roeck as co-maintainer - change maintainers e-mail address * tag 'linux-watchdog-4.16-rc1' of git://www.linux-watchdog.org/linux-watchdog: (74 commits) documentation: watchdog: remove documentation of w83697hf_wdt/w83697ug_wdt documentation: watchdog: remove documentation for ixp2000 documentation: watchdog: remove documentation of at32ap700x_wdt watchdog: remove at32ap700x_wdt watchdog: sp5100_tco: Add support for recent FCH versions watchdog: sp5100-tco: Abort if watchdog is disabled by hardware watchdog: sp5100_tco: Use bit operations watchdog: sp5100_tco: Convert to use watchdog subsystem watchdog: sp5100_tco: Clean up function and variable names watchdog: sp5100_tco: Use dev_ print functions where possible watchdog: sp5100_tco: Match PCI device early watchdog: sp5100_tco: Clean up sp5100_tco_setupdevice watchdog: sp5100_tco: Use standard error codes watchdog: sp5100_tco: Use request_muxed_region where possible watchdog: sp5100_tco: Fix watchdog disable bit watchdog: sp5100_tco: Always use SP5100_IO_PM_{INDEX_REG,DATA_REG} watchdog: core: make sure the watchdog_worker is not deferred watchdog: mt7621: switch to using managed devm_watchdog_register_device() watchdog: mt7621: set WDOG_HW_RUNNING bit when appropriate watchdog: imx2_wdt: restore previous timeout after suspend+resume ...
2018-01-21watchdog: remove at32ap700x_wdtCorentin Labbe1-3/+0
Since AVR32 is gone, this driver is useless. Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com> Acked-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2018-01-08watchdog: Add RAVE SP watchdog driverAndrey Smirnov1-0/+1
This driver provides access to RAVE SP watchdog functionality. Acked-by: Philippe Ombredanne <pombredanne@nexb.com> Acked-by: Pavel Machek <pavel@ucw.cz> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2017-12-28watchdog: Add Spreadtrum watchdog driverEric Long1-0/+1
This patch adds the watchdog driver for Spreadtrum SC9860 platform. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-12-28watchdog: gemini/ftwdt010: rename driver and symbolsLinus Walleij1-1/+1
This renames all the driver files and symbols for the Gemini watchdog to FTWDT010 as it has been revealed that this IP block is a generic watchdog timer from Faraday Technology used in several SoC designs. Select this driver by default for the Gemini, it is a sensible driver to always have enabled. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-12-28watchdog: Add Realtek RTD1295Andreas Färber1-0/+1
Add a watchdog driver for the Realtek RTD1295 SoC. Based on QNAP's arch/arm/mach-rtk119x/driver/rtk_watchdog.c code and mach-rtk119x/driver/dc2vo/fpga/include/iso_reg.h register defines. Signed-off-by: Andreas Färber <afaerber@suse.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman1-0/+1
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license of the kernel, which is GPL version 2. Update the files which contain no license information with the 'GPL-2.0' SPDX license identifier. The SPDX identifier is a legally binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information, Further patches will be generated in subsequent months to fix up cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base worksheet, and did an initial spot review of a few 1000 files. The 4.13 kernel was the starting point of the analysis with 60,537 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately clear with lawyers working with the Linux Foundation. Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines). All documentation files were explicitly excluded. The following heuristics were used to determine which SPDX license identifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time. In total, over 70 hours of logged manual review was done on the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-07-03watchdog: uniphier: add UniPhier watchdog driverKeiji Hayashibara1-0/+1
Add a watchdog driver for Socionext UniPhier series SoC. Note that the timeout value for this device must be a power of 2 because of the specification. Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-06-05watchdog: Add STM32 IWDG driverYannick Fertre1-0/+1
This patch adds IWDG (Independent WatchDoG) support for STM32 platform. Signed-off-by: Yannick FERTRE <yannick.fertre@st.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-06-05watchdog: add rza_wdt driverChris Brandt1-0/+1
Adds a watchdog timer driver for the Renesas RZ/A Series SoCs. A reset handler is also included since a WDT overflow is the only method for restarting an RZ/A SoC. Signed-off-by: Chris Brandt <chris.brandt@renesas.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-02-25watchdog: zx2967: add watchdog controller driver for ZTE's zx2967 familyBaoyou Xie1-0/+1
This patch adds watchdog controller driver for ZTE's zx2967 family. Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-25watchdog: add driver for Cortina Gemini watchdogLinus Walleij1-0/+1
This add support for the Cortina systems Gemini (SL3516) SoC watchdog. I have tried to use all the right new kernel interfaces and tested with busybox' "watchdog" command both to kick and get timeouts and reboots. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-25watchdog: nic7018_wdt: Add NIC7018 watchdog driverHui Chun Ong1-0/+1
Add support for the watchdog timer on PXI Embedded Controller. Signed-off-by: Hui Chun Ong <hui.chun.ong@ni.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-12-16watchdog: loongson1: Add Loongson1 SoC watchdog driverYang Ling1-0/+1
Add watchdog timer specific driver for Loongson1 SoC. Signed-off-by: Yang Ling <gnaygnil@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-10-14Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds1-1/+7
Pull watchdog updates from Wim Van Sebroeck: - a new watchdog pretimeout governor framework - support to upload the firmware on the ziirave_wdt - several fixes and cleanups * git://www.linux-watchdog.org/linux-watchdog: (26 commits) watchdog: imx2_wdt: add pretimeout function support watchdog: softdog: implement pretimeout support watchdog: pretimeout: add pretimeout_available_governors attribute watchdog: pretimeout: add option to select a pretimeout governor in runtime watchdog: pretimeout: add panic pretimeout governor watchdog: pretimeout: add noop pretimeout governor watchdog: add watchdog pretimeout governor framework watchdog: hpwdt: add support for iLO5 fs: compat_ioctl: add pretimeout functions for watchdogs watchdog: add pretimeout support to the core watchdog: imx2_wdt: use preferred BIT macro instead of open coded values watchdog: st_wdt: Remove support for obsolete platforms watchdog: bindings: Remove obsolete platforms from dt doc. watchdog: mt7621_wdt: Remove assignment of dev pointer watchdog: rt2880_wdt: Remove assignment of dev pointer watchdog: constify watchdog_ops structures watchdog: tegra: constify watchdog_ops structures watchdog: iTCO_wdt: constify iTCO_wdt_pm structure watchdog: cadence_wdt: Fix the suspend resume watchdog: txx9wdt: Add missing clock (un)prepare calls for CCF ...
2016-10-08watchdog: pretimeout: add panic pretimeout governorVladimir Zapolskiy1-0/+1
The change adds panic watchdog pretimeout governor, on watchdog pretimeout event the kernel shall panic. In general watchdog pretimeout event means that something essentially bad is going on the system, for example a process scheduler stalls or watchdog feeder is killed due to OOM, so printing out information attendant to panic and before likely unavoidable reboot caused by a watchdog may help to determine a root cause of the issue. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-10-08watchdog: pretimeout: add noop pretimeout governorVladimir Zapolskiy1-0/+2
The change adds noop watchdog pretimeout governor, only an informational message is printed to the kernel log buffer when a watchdog triggers a pretimeout event. While introducing the first pretimeout governor the selected design assumes that the default pretimeout governor is selected by its name and it is always built-in, thus the default pretimeout governor can not be unregistered and the correspondent check can be removed from the watchdog_unregister_governor() function. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-10-08watchdog: add watchdog pretimeout governor frameworkVladimir Zapolskiy1-1/+4
The change adds a simple watchdog pretimeout framework infrastructure, its purpose is to allow users to select a desired handling of watchdog pretimeout events, which may be generated by some watchdog devices. A user selects a default watchdog pretimeout governor during compilation stage. Watchdogs with WDIOF_PRETIMEOUT capability now have one more device attribute in sysfs, pretimeout_governor attribute is intended to display the selected watchdog pretimeout governor. The framework has no impact at runtime on watchdog devices with no WDIOF_PRETIMEOUT capability set. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-09-24ACPI / watchdog: Add support for WDAT hardware watchdogMika Westerberg1-0/+1
Starting from Intel Skylake the iTCO watchdog timer registers were moved to reside in the same register space with SMBus host controller. Not all needed registers are available though and we need to unhide P2SB (Primary to Sideband) device briefly to be able to read status of required NO_REBOOT bit. The i2c-i801.c SMBus driver used to handle this and creation of the iTCO watchdog platform device. Windows, on the other hand, does not use the iTCO watchdog hardware directly even if it is available. Instead it relies on ACPI Watchdog Action Table (WDAT) table to describe the watchdog hardware to the OS. This table contains necessary information about the the hardware and also set of actions which are executed by a driver as needed. This patch implements a new watchdog driver that takes advantage of the ACPI WDAT table. We split the functionality into two parts: first part enumerates the WDAT table and if found, populates resources and creates platform device for the actual driver. The second part is the driver itself. The reason for the split is that this way we can make the driver itself to be a module and loaded automatically if the WDAT table is found. Otherwise the module is not loaded. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-07-17watchdog: Add Meson GXBB Watchdog DriverNeil Armstrong1-0/+1
Add watchdog specific driver for Amlogic Meson GXBB SoC. Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-07-17watchdog: max77620: Add support for watchdog timerLaxman Dewangan1-0/+1
Maxim PMIC MAX77620 is Power management IC which have multiple sub blocks like regulators (DCDC/LDOs), GPIO, RTC, Clock, Watchdog timer etc. Add the driver for watchdog timer under watchdog framework. The driver implements the watchdog callbacks to start, stop, ping and set timeout for watchodg framework. Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-07-17watchdog: Add Aspeed watchdog driverJoel Stanley1-0/+1
Provides generic watchdog features as well as reboot support for the Aspeed SoCs. Signed-off-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-05-25Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds1-0/+1
Pull watchdog updates from Wim Van Sebroeck: - add support for Fintek F81865 Super-IO chip - add support for watchdogs (RWDT and SWDT) found on RCar Gen3 based SoCs from Renesas - octeon: Handle the FROZEN hot plug notifier actions - f71808e_wdt fixes and cleanups - some small improvements in code and documentation * git://www.linux-watchdog.org/linux-watchdog: MAINTAINERS: Add file patterns for watchdog device tree bindings Documentation: Add ebc-c384_wdt watchdog-parameters.txt entry watchdog: shwdt: Use setup_timer() watchdog: cpwd: Use setup_timer() arm64: defconfig: enable Renesas Watchdog Timer watchdog: renesas-wdt: add driver watchdog: remove error message when unable to allocate watchdog device watchdog: f71808e_wdt: Fix WDTMOUT_STS register read watchdog: f71808e_wdt: Fix typo watchdog: f71808e_wdt: Add F81865 support watchdog: sp5100_tco: properly check for new register layouts watchdog: core: Fix circular locking dependency watchdog: core: fix trivial typo in a comment watchdog: hpwdt: Adjust documentation to match latest kernel module parameters. watchdog: imx2_wdt: add external reset support via dt prop watchdog: octeon: Handle the FROZEN hot plug notifier actions. watchdog: qcom: Report reboot reason
2016-05-14watchdog: renesas-wdt: add driverWolfram Sang1-0/+1
Add support for watchdogs (RWDT and SWDT) found on RCar Gen3 based SoCs from Renesas. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-05-13watchdog: pic32-dmt: Add PIC32 deadman timer driverPurna Chandra Mandal1-0/+1
Adds support for the deadman timer peripheral found on PIC32 class devices. The primary function of the deadman timer (DMT) is to reset the processor in the event of a software malfunction. The DMT is a free-running instruction fetch timer, which is clocked whenever an instruction fetch occurs until a count match occurs. Instructions are not fetched when the processor is in sleep mode. Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-watchdog@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12703/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-13watchdog: pic32-wdt: Add PIC32 watchdog driverJoshua Henderson1-0/+1
Add support for the watchdog peripheral found on PIC32 class devices. Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com> Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Cc: devicetree@vger.kernel.org Cc: linux-watchdog@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12701/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-03-20Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds1-0/+3
Pull watchdog updates from Wim Van Sebroeck: - new drivers for: NI 903x/913x watchdog driver, WinSystems EBC-C384 watchdog timer and ARM SBSA watchdog driver - Support for NCT6102D devices - Improvements of the generic watchdog framework (improve restart handler, make set_timeout optional, introduce infrastructure triggered keepalives, ... - improvements on the pnx4008 watchdog driver - several smaller fixes and improvements * git://www.linux-watchdog.org/linux-watchdog: (28 commits) watchdog: Ensure that wdd is not dereferenced if NULL watchdog: imx2: Convert to use infrastructure triggered keepalives watchdog: dw_wdt: Convert to use watchdog infrastructure watchdog: Add support for minimum time between heartbeats watchdog: Make stop function optional watchdog: Introduce WDOG_HW_RUNNING flag watchdog: Introduce hardware maximum heartbeat in watchdog core watchdog: Make set_timeout function optional arm: lpc32xx: remove restart handler arm: lpc32xx: phy3250 remove restart hook watchdog: pnx4008: restart: support "cmd" from userspace watchdog: pnx4008: add support for soft reset watchdog: pnx4008: add restart handler watchdog: pnx4008: update logging during power-on watchdog: tangox_wdt: test clock rate to avoid division by 0 watchdog: atlas7_wdt: test clock rate to avoid division by 0 watchdog: s3c2410_wdt: Add max and min timeout values Watchdog: introduce ARM SBSA watchdog driver Documentation: add sbsa-gwdt driver documentation watchdog: Add watchdog timer support for the WinSystems EBC-C384 ...
2016-03-16Watchdog: introduce ARM SBSA watchdog driverFu Wei1-0/+1
According to Server Base System Architecture (SBSA) specification, the SBSA Generic Watchdog has two stage timeouts: the first signal (WS0) is for alerting the system by interrupt, the second one (WS1) is a real hardware reset. More details about the hardware specification of this device: ARM DEN0029B - Server Base System Architecture (SBSA) This driver can operate ARM SBSA Generic Watchdog as a single stage watchdog or a two stages watchdog, it's set up by the module parameter "action". In the single stage mode, when the timeout is reached, your system will be reset by WS1. The first signal (WS0) is ignored. In the two stages mode, when the timeout is reached, the first signal (WS0) will trigger panic. If the system is getting into trouble and cannot be reset by panic or restart properly by the kdump kernel(if supported), then the second stage (as long as the first stage) will be reached, system will be reset by WS1. This function can help administrator to backup the system context info by panic console output or kdump. This driver bases on linux kernel watchdog framework, so it can get timeout from module parameter and FDT at the driver init stage. Signed-off-by: Fu Wei <fu.wei@linaro.org> Reviewed-by: Graeme Gregory <graeme.gregory@linaro.org> Tested-by: Pratyush Anand <panand@redhat.com> Acked-by: Timur Tabi <timur@codeaurora.org> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Tested-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-03-02Merge tag 'lkdtm-next' of ↵Greg Kroah-Hartman1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into char-misc-testing Kees writes: Become maintainer, add hardening tests for use-after-free and atomic wrapping.
2016-03-01watchdog: Add watchdog timer support for the WinSystems EBC-C384William Breathitt Gray1-0/+1
The WinSystems EBC-C384 has an onboard watchdog timer. The timeout range supported by the watchdog timer is 1 second to 255 minutes. Timeouts under 256 seconds have a 1 second granularity, while the rest have a 1 minute granularity. This driver adds watchdog timer support for this onboard watchdog timer. The timeout may be configured via the timeout module parameter. Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-03-01watchdog: ni903x_wdt: Add NI 903x/913x watchdog driverKyle Roeschley1-0/+1
Add support for the watchdog timer on NI cRIO-903x and cDAQ-913x real- time controllers. Signed-off-by: Jeff Westfahl <jeff.westfahl@ni.com> Signed-off-by: Kyle Roeschley <kyle.roeschley@ni.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2016-02-07watchdog: mei_wdt: implement MEI iAMT watchdog driverTomas Winkler1-0/+1
Create a driver with the generic watchdog interface for the MEI iAMT watchdog device. Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-01-31Add sun4v_wdt watchdog driverwim.coekaerts@oracle.com1-0/+1
This driver adds sparc hypervisor watchdog support. The default timeout is 60 seconds and the range is between 1 and 31536000 seconds. Both watchdog-resolution and watchdog-max-timeout MD properties settings are supported. Signed-off-by: Wim Coekaerts <wim.coekaerts@oracle.com> Reviewed-by: Julian Calaby <julian.calaby@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-09watchdog: add MT7621 watchdog supportJohn Crispin1-0/+1
This patch adds support for the watchdog core found on newer MediaTek Wifi SoCs MT7621 and MT7628. There is no symbol for MT7628 as it is a subtype of MT7620 so we depend on that instead. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-12-29watchdog: add support for Sigma Designs SMP86xx/SMP87xxMans Rullgard1-0/+1
This adds support for the Sigma Designs SMP86xx/SMP87xx family built-in watchdog. Signed-off-by: Mans Rullgard <mans@mansr.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-12-29watchdog: Zodiac Aerospace RAVE Switch Watchdog Processor DriverMartyn Welch1-0/+1
This patch adds a driver for the Zodiac Aerospace RAVE Watchdog Procesor. This device implements a watchdog timer, accessible over I2C. Signed-off-by: Martyn Welch <martyn.welch@collabora.co.uk> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-12-29watchdog: add Alphascale asm9260-wdt driverOleksij Rempel1-0/+1
Add WD support for Alphascale asm9260 SoC. This driver provide support for different function modes: - HW mode to trigger SoC reset on timeout - SW mode do soft reset if needed - DEBUG mode Signed-off-by: Oleksij Rempel <linux@rempel-privat.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-12-29watchdog: ts4800: add driver for TS-4800 watchdogDamien Riegel1-0/+1
This watchdog is instantiated in a FPGA that is memory mapped. It is made of only one register, called the feed register. Writing to this register will re-arm the watchdog for a given time (and enable it if it was disable). It can be disabled by writing a special value into it. It is part of a syscon block, and the watchdog register offset in this block varies from board to board. This offset is passed in the syscon property after the phandle to the syscon node. Signed-off-by: Damien Riegel <damien.riegel@savoirfairelinux.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-12-29watchdog: atlas7: add watchdog driver of CSRatlas7Guo Zeng1-0/+1
This patch adds watchdog driver for CSRatlas7 platform. On CSRatlas7, the 6th timer can act as a watchdog timer when the Watchdog mode is enabled. Signed-off-by: Guo Zeng <Guo.Zeng@csr.com> Signed-off-by: William Wang <William.Wang@csr.com> Signed-off-by: Barry Song <Baohua.Song@csr.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-10-27watchdog: Watchdog driver for Broadcom Set-Top BoxJustin Chen1-0/+1
Watchdog driver for Broadcom 7038 and newer chips. Signed-off-by: Justin Chen <justinpopo6@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-09-09watchdog: add a driver to support SAMA5D4 watchdog timerWenyou Yang1-0/+1
From SAMA5D4, the watchdog timer is upgrated with a new feature, which is describled as in the datasheet, "WDT_MR can be written until a LOCKMR command is issued in WDT_CR". That is to say, as long as the bootstrap and u-boot don't issue a LOCKMR command, WDT_MR can be written more than once in the driver. So the SAMA5D4 watchdog driver's implementation is different from the at91sam9260 watchdog driver implemented in file at91sam9_wdt.c. The user application open the device file to enable the watchdog timer hardware, and close to disable it, and set the watchdog timer timeout by seting WDV and WDD fields of WDT_MR register, and ping the watchdog by issuing WDRSTT command to WDT_CR register with hard-coded key. Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-09-09watchdog: NXP LPC18xx Watchdog Timer DriverAriel D'Alessandro1-0/+1
This commit adds support for the watchdog timer found in NXP LPC SoCs family, which includes LPC18xx/LPC43xx. Other SoCs in that family may share the same watchdog hardware. Watchdog driver registers a restart handler that will restart the system by performing an incorrect feed after ensuring the watchdog is enabled in reset mode. As watchdog cannot be disabled in hardware, driver's stop routine will regularly send a keepalive ping using a timer. Signed-off-by: Ariel D'Alessandro <ariel@vanguardiasur.com.ar> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-06-22watchdog: da9062: DA9062 watchdog driverS Twiss1-0/+1
Add watchdog driver support for DA9062 Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-06-22watchdog: digicolor: driver for Conexant Digicolor CX92755 SoCBaruch Siach1-0/+1
This commit add a driver for the watchdog functionality of the Conexant CX92755 SoC, from the Digicolor series of SoCs. Of 8 system timers provided by the CX92755, the first one, timer A, can reset the chip when its counter reaches zero. This driver uses this capability to provide userspace with a standard watchdog, using the watchdog timer driver core framework. This driver also implements a reboot handler for the reboot(2) system call. The watchdog driver shares the timer registers with the CX92755 timer driver (drivers/clocksource/timer-digicolor.c). The timer driver, however, uses only timers other than A, so both drivers should coexist. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-06-22watchdog: st_wdt: Add new driver for ST's LPC WatchdogLee Jones1-0/+1
Signed-off-by: David Paris <david.paris@st.com> Signed-off-by: Lee Jones <lee.jones@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2015-02-17watchdog: Add driver for Mediatek watchdogMatthias Brugger1-0/+1
This patch adds a driver for the Mediatek SoC integrated watchdog. This driver supports watchdog and software reset for mt65xx and mt81xx SoCs. Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com> Tested-by: Eddie Huang <eddie.huang@mediatek.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>