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path: root/drivers/watchdog/Kconfig
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2017-07-11Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds
Pull watchdog updates from Wim Van Sebroeck: - Add Renesas RZ/A WDT Watchdog driver - STM32 Independent WatchDoG (IWDG) support - UniPhier watchdog support - Add F71868 support - Add support for NCT6793D and NCT6795D - dw_wdt: add reset lines support - core: add option to avoid early handling of watchdog - core: introduce watchdog_worker_should_ping helper - Cleanups and improvements for sama5d4, intel-mid_wdt, s3c2410_wdt, orion_wdt, gpio_wdt, it87_wdt, meson_wdt, davinci_wdt, bcm47xx_wdt, zx2967_wdt, cadence_wdt * git://www.linux-watchdog.org/linux-watchdog: (32 commits) watchdog: introduce watchdog_worker_should_ping helper watchdog: uniphier: add UniPhier watchdog driver dt-bindings: watchdog: add description for UniPhier WDT controller watchdog: cadence_wdt: make of_device_ids const. watchdog: zx2967: constify zx2967_wdt_ops. watchdog: bcm47xx_wdt: constify bcm47xx_wdt_hard_ops and bcm47xx_wdt_soft_ops watchdog: davinci: Add missing clk_disable_unprepare(). watchdog: davinci: Handle return value of clk_prepare_enable watchdog: meson: Handle return value of clk_prepare_enable watchdog: it87: Add support for various Super-IO chips watchdog: it87: Use infrastructure to stop watchdog on reboot watchdog: it87: Drop support for resetting watchdog though CIR and Game port watchdog: it87: Convert to use watchdog core infrastructure watchdog: it87: Drop FSF mailing address watchdog: dw_wdt: get reset lines from dt watchdog: bindings: dw_wdt: add reset lines watchdog: w83627hf: Add support for NCT6793D and NCT6795D watchdog: core: add option to avoid early handling of watchdog watchdog: f71808e_wdt: Add F71868 support watchdog: Add STM32 IWDG driver ...
2017-07-03watchdog: uniphier: add UniPhier watchdog driverKeiji Hayashibara
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>
2017-07-03watchdog: it87: Add support for various Super-IO chipsGuenter Roeck
Add support for IT8607, IT8622, IT8625, IT8628, IT8655, IT8665, and IT8686. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-07-03watchdog: it87: Drop support for resetting watchdog though CIR and Game portGuenter Roeck
Resetting the watchdog timer on CIR interrupts or on game port interrupts is not not supported on recent chips, and doesn't really tell if the system is stable. On top of that, at least the bit to enable resetting the watchdog through the game port is used differently on recent chips. Drop resetting the watchdog on CIR or game port interrupts to simplify the code. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-07-03watchdog: it87: Convert to use watchdog core infrastructureGuenter Roeck
Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-06-15drivers/watchdog/Kconfig: Update CONFIG_WATCHDOG_RTAS dependenciesMurilo Opsfelder Araujo
drivers/watchdog/wdrtas.c uses symbols defined in arch/powerpc/kernel/rtas.c, which are exported iff CONFIG_PPC_RTAS is selected. Building wdrtas.c without setting CONFIG_PPC_RTAS throws the following errors: ERROR: ".rtas_token" [drivers/watchdog/wdrtas.ko] undefined! ERROR: "rtas_data_buf" [drivers/watchdog/wdrtas.ko] undefined! ERROR: "rtas_data_buf_lock" [drivers/watchdog/wdrtas.ko] undefined! ERROR: ".rtas_get_sensor" [drivers/watchdog/wdrtas.ko] undefined! ERROR: ".rtas_call" [drivers/watchdog/wdrtas.ko] undefined! This was identified during a randconfig build where CONFIG_WATCHDOG_RTAS=m and CONFIG_PPC_RTAS was not set. Logs are here: http://kisskb.ellerman.id.au/kisskb/buildresult/12982152/ This patch fixes the issue by updating CONFIG_WATCHDOG_RTAS to depend on just CONFIG_PPC_RTAS, removing COMPILE_TEST entirely. Signed-off-by: Murilo Opsfelder Araujo <mopsfelder@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-06-05watchdog: core: add option to avoid early handling of watchdogSebastian Reichel
On some systems its desirable to have watchdog reboot the system when it does not come up fast enough. This adds a kernel parameter to disable the auto-update of watchdog before userspace takes over and a kernel option to set the default. The info messages were added to shorten error searching on misconfigured systems. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> 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: f71808e_wdt: Add F71868 supportMaciej S. Szmigiero
This adds support for watchdog part of Fintek F71868 Super I/O chip to f71808e_wdt driver. The F71868 chip is, in general, very similar to a F71869, however it has slightly different set of available reset pulse widths. Tested on MSI A55M-P33 motherboard. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> 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 Fertre
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 Brandt
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>
2017-05-18watchdog: orion: fix compile-test dependenciesArnd Bergmann
I ran into one corner case with the orion watchdog using the atomic_io_modify interface: drivers/watchdog/orion_wdt.o: In function `orion_stop': orion_wdt.c:(.text.orion_stop+0x28): undefined reference to `atomic_io_modify' drivers/watchdog/orion_wdt.o: In function `armada375_stop': orion_wdt.c:(.text.armada375_stop+0x28): undefined reference to `atomic_io_modify' This function is available on all 32-bit ARM builds except for ebsa110, so we have to specifically exclude that from compile-testing. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-03-01watchdog: retu: restore MFD dependencyArnd Bergmann
The retu watchdog calls into the respective mfd driver, but fails to link if that is diabled: drivers/watchdog/built-in.o: In function `retu_wdt_set_timeout': ziirave_wdt.c:(.text+0x8c88): undefined reference to `retu_write' ziirave_wdt.c:(.text+0x8c88): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `retu_write' drivers/watchdog/built-in.o: In function `retu_wdt_start': ziirave_wdt.c:(.text+0x8cc8): undefined reference to `retu_write' ziirave_wdt.c:(.text+0x8cc8): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `retu_write' This restores the dependency as it was before Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-01watchdog: db8500: add back prmcu dependencyArnd Bergmann
When the db8500 watchdog is enabled without the PRCMU, we get a lot of warnings about duplicate or missing helper functions: In file included from drivers/watchdog/ux500_wdt.c:21:0: include/linux/mfd/dbx500-prcmu.h:422:19: error: redefinition of 'prcmu_abb_read' static inline int prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size) This restores the dependency as it was. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-01watchdog: kempld: revert to full dependencyArnd Bergmann
The kempld watchdog driver requires the respective MFD driver: drivers/watchdog/built-in.o: In function `kempld_wdt_probe': kempld_wdt.c:(.text+0x5c78): undefined reference to `kempld_get_mutex' kempld_wdt.c:(.text+0x5c84): undefined reference to `kempld_read8' kempld_wdt.c:(.text+0x5c8e): undefined reference to `kempld_release_mutex' kempld_wdt.c:(.text+0x5d1c): undefined reference to `kempld_read8' kempld_wdt.c:(.text+0x5d2c): undefined reference to `kempld_write8' This adds the Kconfig dependency back. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-01watchdog: bcm2835: add CONFIG_OF dependencyArnd Bergmann
Without CONFIG_OF, the driver fails to link: drivers/watchdog/built-in.o: In function `bcm2835_power_off': bcm2835_wdt.c:(.text+0x1946): undefined reference to `of_find_device_by_node' This adds a new dependency, to allow the COMPILE_TEST check to succeed. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-01watchdog: sp805: add back AMBA dependencyArnd Bergmann
The driver fails to link if ARM_AMBA is disabled: drivers/watchdog/sp805_wdt.o: In function `sp805_wdt_driver_init': sp805_wdt.c:(.init.text+0x4): undefined reference to `amba_driver_register' It seems that the COMPILE_TEST was added in the wrong place, as there is no architecture dependency, but a bus dependency. This moves the dependency accordingly. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-01watchdog: menf21bmc: add I2C dependencyArnd Bergmann
This driver fails to link when CONFIG_I2C is disabled or a loadable module while the watchdog is built-in: drivers/watchdog/built-in.o: In function `menf21bmc_wdt_shutdown': menf21bmc_wdt.c:(.text+0x9b44): undefined reference to `i2c_smbus_write_word_data' menf21bmc_wdt.c:(.text+0x9b44): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `i2c_smbus_write_word_data' This adds a Kconfig dependency for it, to enforce a valid configuration. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-01watchdog: geode: restore hard CS5535_MFGPT dependencyArnd Bergmann
Wtihout CONFIG_CS5535_MFGPT, the driver does not link right: drivers/watchdog/built-in.o: In function `geodewdt_probe': geodewdt.c:(.init.text+0xca3): undefined reference to `cs5535_mfgpt_alloc_timer' geodewdt.c:(.init.text+0xcd4): undefined reference to `cs5535_mfgpt_write' geodewdt.c:(.init.text+0xcef): undefined reference to `cs5535_mfgpt_toggle_event' This adds back the dependency on this base driver. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-03-01watchdog: wm831x watchdog really needs mfdArnd Bergmann
The wm831x watchdog driver can now be built without the wm831x mfd driver, which results in a link error: (.text+0x1a95c): undefined reference to `wm831x_set_bits' (.text+0x1a95c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `wm831x_set_bits' (.text+0x1a968): undefined reference to `wm831x_reg_lock' (.text+0x1a968): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `wm831x_reg_lock' (.text+0x1a9dc): undefined reference to `wm831x_reg_unlock' (.text+0x1a9dc): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `wm831x_reg_unlock' This adds back the dependency that was removed. We can still build test this driver on all architectures by enabling the MFD driver for it first. Fixes: da2a68b3eb47 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-24watchdog: s3c2410: Select MFD_SYSCON on all Exynos platformsKrzysztof Kozlowski
Syscon is used not only on Exynos5 SoCs but also on Exynos3250, Exynos4412 and ARMv8 versions (Exynos5433, Exynos7). Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-24watchdog: softdog: make pretimeout support a compile optionWolfram Sang
It occurred to me that the panic pretimeout governor will stall the softdog, because it is purely software which simply breaks when the kernel panics. Testing governors with the softdog on the other hand is really useful, so make this feature a compile time option which nees to be enabled explicitly. This also removes the overhead if pretimeout support is not used because it will now be compiled away (saving ~10% on ARM32). Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-24watchdog: zx2967: add watchdog controller driver for ZTE's zx2967 familyBaoyou Xie
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>
2017-02-24watchdog: RDC321X_WDT always depends on PCIGuenter Roeck
Without this dependency, platforms not supporting PCI (such as m68k) report the following build warning when building allmodconfig or allyesconfig. drivers/watchdog/rdc321x_wdt.c: In function 'rdc321x_wdt_ioctl': ./arch/m68k/include/asm/uaccess_mm.h:61:1: warning: 'value' may be used uninitialized in this function Fixes: f4c3de659054 ("watchdog: Enable COMPILE_TEST where possible") Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-24watchdog: add driver for Cortina Gemini watchdogLinus Walleij
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>
2017-02-24watchdog: Enable COMPILE_TEST where possibleGuenter Roeck
Building all watchdog drivers is all but impossible since many depend on platforms which are not enabled by test builds. Add dependency on COMPILE_TEST where possible to improve the situation. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-24watchdog: pnx833x_wdt: Mark as brokenGuenter Roeck
pnx833x_wdt does not compile if enabled. Bit operations expect an unsigned long as argument. If that is fixed, the build still fails because put_user, get_user, and copy_to_user are undefined. Mark it as broken. Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2017-02-24watchdog: nic7018_wdt: Add NIC7018 watchdog driverHui Chun Ong
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: it87_wdt: add IT8620E IDMaciej S. Szmigiero
This adds IT8620E chip ID to it87_wdt driver. Such chip is often found on current Gigabyte motherboards, it is allegedly custom made for this manufacturer. Upon testing it looks like it has a 16-bit timer and cannot be reset via game port (only via CIR), so it is similar to IT87{18,20,21,28,83} chips. Tested on GA-F2A88XM-HD3P board. Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> 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 Ling
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>
2016-12-16watchdog: da9062/61: watchdog driverSteve Twiss
The of_device_id match array is added to support "dlg,da9062-watchdog" as a valid .compatible string. A MODULE_DEVICE_TABLE() macro is added. This patch assumes the use of a DA9062 fallback compatible string for the DTS to pick up the DA9062 device driver for use with the DA9061 watchdog hardware Copyright header is updated to add DA9061 in its description and the module description macro is extended to include DA9061. Kconfig is updated to reflect support for DA9061/62. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-12-16watchdog: Standardize leading tabs and spaces in Kconfig fileRobert P. J. Day
Replace small number of lines using leading spaces with proper leading tabs and spaces -- purely an aesthetic fix. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2016-11-25Merge branches 'acpi-sleep-fixes' and 'acpi-wdat-fixes'Rafael J. Wysocki
* acpi-sleep-fixes: Revert "ACPI: Execute _PTS before system reboot" * acpi-wdat-fixes: watchdog: wdat_wdt: Select WATCHDOG_CORE
2016-11-21watchdog: wdat_wdt: Select WATCHDOG_COREMika Westerberg
The WDAT watchdog driver uses functionality provided by the watchdog timer core but it did not select it explicitly. This results following linker error when only WDAT_WDT is enabled in Kconfig: drivers/built-in.o: In function `wdat_wdt_probe': drivers/watchdog/wdat_wdt.c:444: undefined reference to `devm_watchdog_register_device' Fix this by explicitly selecting WATCHDOG_CORE when WDAT watchdog driver is enabled. Fixes: 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog) Reported-by: Vegard Nossum <vegard.nossum@gmail.com> 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>
2016-10-13Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds
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 Zapolskiy
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 Zapolskiy
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 Zapolskiy
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 Westerberg
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 Armstrong
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: drop redundant 'default n' option for WATCHDOG_SYSFSVladimir Zapolskiy
The option 'default n' and its absence are equal for kbuild, which makes explicit 'default n' redundant. Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.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 Dewangan
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 Stanley
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>
2016-06-17watchdog: ebc-c384_wdt: Allow build for X86_64William Breathitt Gray
With the introduction of the ISA_BUS_API Kconfig option, ISA-style drivers may be built for X86_64 architectures. This patch changes the ISA Kconfig option dependency of the WinSystems EBC-C384 watchdog timer driver to ISA_BUS_API, thus allowing it to build for X86_64 as it is expected to. Cc: Wim Van Sebroeck <wim@iguana.be> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-05-25Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds
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
2016-05-20Merge tag 'driver-core-4.7-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here's the "big" driver core update for 4.7-rc1. Mostly just debugfs changes, the long-known and messy races with removing debugfs files should be fixed thanks to the great work of Nicolai Stange. We also have some isa updates in here (the x86 maintainers told me to take it through this tree), a new warning when we run out of dynamic char major numbers, and a few other assorted changes, details in the shortlog. All have been in linux-next for some time with no reported issues" * tag 'driver-core-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (32 commits) Revert "base: dd: don't remove driver_data in -EPROBE_DEFER case" gpio: ws16c48: Utilize the ISA bus driver gpio: 104-idio-16: Utilize the ISA bus driver gpio: 104-idi-48: Utilize the ISA bus driver gpio: 104-dio-48e: Utilize the ISA bus driver watchdog: ebc-c384_wdt: Utilize the ISA bus driver iio: stx104: Utilize the module_isa_driver and max_num_isa_dev macros iio: stx104: Add X86 dependency to STX104 Kconfig option Documentation: Add ISA bus driver documentation isa: Implement the max_num_isa_dev macro isa: Implement the module_isa_driver macro pnp: pnpbios: Add explicit X86_32 dependency to PNPBIOS isa: Decouple X86_32 dependency from the ISA Kconfig option driver-core: use 'dev' argument in dev_dbg_ratelimited stub base: dd: don't remove driver_data in -EPROBE_DEFER case kernfs: Move faulting copy_user operations outside of the mutex devcoredump: add scatterlist support debugfs: unproxify files created through debugfs_create_u32_array() debugfs: unproxify files created through debugfs_create_blob() debugfs: unproxify files created through debugfs_create_bool() ...
2016-05-14watchdog: renesas-wdt: add driverWolfram Sang
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 Mandal
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 Henderson
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>
2016-05-02watchdog: ebc-c384_wdt: Utilize the ISA bus driverWilliam Breathitt Gray
The WinSystems EBC-C384 watchdog timer is controlled via ISA bus communication. As such, the ISA bus driver is more appropriate than the platform driver for the WinSystems EBC-C384 watchdog timer driver. Cc: Wim Van Sebroeck <wim@iguana.be> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-19Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds
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 ...
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