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path: root/drivers/watchdog
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2014-03-31watchdog: orion: prepare new Dove DT Kconfig variableSebastian Hesselbarth
DT-enabled Dove will move over from ARCH_DOVE in mach-dove to MACH_DOVE in mach-mvebu. As non-DT ARCH_DOVE will stay to rot for a while, add a new DT-only MACH_DOVE Kconfig. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Acked-by: Jason Cooper <jason@lakedaemon.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: fix checkpatch warnings and errorJingoo Han
Fix the following checkpatch warnings and error: WARNING: quoted string split across lines WARNING: braces {} are not necessary for single statement blocks WARNING: __initdata should be placed after ibmasr_id_table[] WARNING: please, no space before tabs ERROR: do not initialise statics to 0 or NULL Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: Add tegra watchdogAndrew Chew
Add a driver for the hardware watchdogs in NVIDIA Tegra SoCs (Tegra30 and later). This driver will configure one watchdog timer that will reset the system in the case of a watchdog timeout. This driver binds to the nvidia,tegra30-timer device node and gets its register base from there. Signed-off-by: Andrew Chew <achew@nvidia.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Stephen Warren <swarren@nvidia.com> Reviewed-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Remove no_timeout variableMichal Simek
Remove no_timeout variable and check variables directly. Suggested-by: Rob Herring <robherring2@gmail.com> Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Enable this driver for ZynqMichal Simek
Enable this driver for Zynq. Move it to architecture independent Kconfig part. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Use correct comment indentationMichal Simek
No functional changes. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Use of_property_read_u32Michal Simek
Use of_property_read_u32 functions to clean probe function. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Fix all printk messagesMichal Simek
Use dev_ functions for printk messages. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Allocate private structure per deviceMichal Simek
Only one watchdog could be used by this driver. Create driver private data structure and move there all variables for one instance. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Move no_timeout to probe functionMichal Simek
no_timeout should be local variable because it is used only in probe function. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Simplify probe and remove functionsMichal Simek
Use devm_ helper function to simplify probe and error path. Move ioremap to the beginning of probe function. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Move control_status_reg to functionsMichal Simek
control_status_reg is temp variables and should be used locally by specific function. Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: xilinx: Convert driver to the watchdog frameworkMichal Simek
- Remove uneeded headers, fops functions - Use xilinx_wdt prefix in start/stop/keepalive functions and in new structures Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: wdt285: Fix variable typeAlexander Shiyan
Variable "new_margin" is checked in the function watchdog_ioctl() to be non-negative, so change its type to "int". Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: shwdt: Remove unused variableAlexander Shiyan
Variable "wdt" is not used anywhere in the function sh_wdt_remove(). This patch removes this variable. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: sc520_wdt: Remove unused variableAlexander Shiyan
Variable "dummy" is not used anywhere in the function wdt_config(). This patch removes this variable. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: intel_scu_watchdog: Remove unused variableAlexander Shiyan
Variable "hw_pre_value" is not used anywhere in the function intel_scu_set_heartbeat(). This patch removes this variable. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: indydog: Simplify indydog_{start,stop}Alexander Shiyan
This patch simplify functions indydog_start() and indydog_stop() a bit and removes excess intermediate variable. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: bcm63xx_wdt: Remove unused field from bcm63xx_wdt_deviceAlexander Shiyan
Field "default_ticks" is not used anywhere in the driver code. This patch removes this field. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: sp805_wdt: Use devm_ioremap_resource()Jingoo Han
Use devm_ioremap_resource() in order to make the code simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: omap_wdt: Use devm_ioremap_resource()Jingoo Han
Use devm_ioremap_resource() in order to make the code simpler, and remove 'struct resource *mem' from 'struct omap_wdt_dev' and omap_wdt_probe(), resplectively. because the 'mem' variables are not used anymore. Also the redundant return value check of platform_get_resource() is removed, because the value is checked by devm_ioremap_resource(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: ep93xx_wdt: Use devm_ioremap_resource()Jingoo Han
Use devm_ioremap_resource() in order to make the code simpler, and remove redundant return value check of platform_get_resource() because the value is checked by devm_ioremap_resource(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: ts72xx_wdt: make 'ts72xx_wdt_pdev' staticJingoo Han
Make 'ts72xx_wdt_pdev' static, because it is used only in this file. It also fixes the following sparse warning. warning: symbol 'ts72xx_wdt_pdev' was not declared. Should it be static? Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: Remove unnecessary OOM messagesJingoo Han
The site-specific OOM messages are unnecessary, because they duplicate the MM subsystem generic OOM message. For example, k.alloc and v.alloc failures use dump_stack(). Signed-off-by: Jingoo Han <jg1.han@samsung.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> [for at32ap700x] Acked-by: Lubomir Rintel <lkundrak@v3.sk> [for bcm2835] Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [for sp805_wdt] Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> [for ts72xx_wdt] Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-31watchdog: delete non-required instances of include <linux/init.h>Paul Gortmaker
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: linux-watchdog@vger.kernel.org
2014-03-31watchdog: mpc8xxx_wdt: MPC8xx is HW enabledChristophe Leroy
MPC8xx watchdog is enabled at startup by HW. If the bootloader disables it, it cannot be reenabled. Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-03-20octeon, watchdog: Fix CPU hotplug callback registrationSrivatsa S. Bhat
Subsystems that want to register CPU hotplug callbacks, as well as perform initialization for the CPUs that are already online, often do it as shown below: get_online_cpus(); for_each_online_cpu(cpu) init_cpu(cpu); register_cpu_notifier(&foobar_cpu_notifier); put_online_cpus(); This is wrong, since it is prone to ABBA deadlocks involving the cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently with CPU hotplug operations). Instead, the correct and race-free way of performing the callback registration is: cpu_notifier_register_begin(); for_each_online_cpu(cpu) init_cpu(cpu); /* Note the use of the double underscored version of the API */ __register_cpu_notifier(&foobar_cpu_notifier); cpu_notifier_register_done(); Fix the watchdog code in octeon by using this latter form of callback registration. Cc: Wim Van Sebroeck <wim@iguana.be> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-03-19Revert "powerpc/watchdog: Don't enable interrupt on PPC64 BookE"Scott Wood
This reverts commit 3978bdb4ed653342b0be66c031bf61b72cc55d60, now that critical interrupts are properly supported on ppc64 booke. Signed-off-by: Scott Wood <scottwood@freescale.com> Cc: Laurentiu Tudor <Laurentiu.Tudor@freescale.com> Cc: Wim Van Sebroeck <wim@iguana.be>
2014-03-19watchdog: iTCO_wdt: Add support for v3 siliconPeter Tyser
Some new Atom's, eg Avoton and Bay Trail, have slightly different iTCO functionality: - The watchdog timer ticks at 1 second instead of .6 seconds - Some 8 and 16-bit registers were combined into 32-bit registers - Some registers were removed (DAT_IN, DAT_OUT, MESSAGE) - The BOOT_STS field in TCO_STS was removed - The NO_REBOOT bit is in the PMC area instead of GCS Update the driver to support the above changes and bump the version to 1.11. Signed-off-by: Peter Tyser <ptyser@xes-inc.com> Tested-by: Rajat Jain <rajatjain@juniper.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-03-08Merge tag 'mvebu-watchdog-3.15-2' of git://git.infradead.org/linux-mvebu ↵Olof Johansson
into next/drivers mvebu watchdog driver changes for v3.15 (incremental #2) - remove warnings by using %pa for phys_addr_t * tag 'mvebu-watchdog-3.15-2' of git://git.infradead.org/linux-mvebu: watchdog: orion_wdt: Use %pa to print 'phys_addr_t' Signed-off-by: Olof Johansson <olof@lixom.net>
2014-02-25watchdog: orion_wdt: Use %pa to print 'phys_addr_t'Fabio Estevam
When building an ARM multi_v7_defconfig with LPAE option selected we get the following build warning: drivers/watchdog/orion_wdt.c:272:2: warning: format '%x' expects argument of type 'unsigned int', but argument 4 has type 'phys_addr_t' [-Wformat=] Fix it by using %pa to print 'phys_addr_t'. Reported-by: Olof's autobuilder <build@lixom.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-25Merge tag 'mvebu-watchdog-3.15' of git://git.infradead.org/linux-mvebu into ↵Arnd Bergmann
next/drivers mvebu watchdog driver changes for v3.15 - orion watchdog - cleanup and extend driver to support Armada 370 and Armada XP Depends: - tags/irqchip-mvebu-fixes-3.14 (already pulled by tglx) - both are based on v3.14-rc1 * tag 'mvebu-watchdog-3.15' of git://git.infradead.org/linux-mvebu: watchdog: orion: Enable the build on ARCH_MVEBU watchdog: orion: Add support for Armada 370 and Armada XP SoC watchdog: orion: Add per-compatible watchdog start implementation watchdog: orion: Add per-compatible clock initialization watchdog: orion: Introduce per-compatible of_device_id data watchdog: orion: Introduce an orion_watchdog device structure watchdog: orion: Remove unneeded BRIDGE_CAUSE clear watchdog: orion: Make RSTOUT register a separate resource watchdog: orion: Handle the interrupt so it's properly acked watchdog: orion: Make sure the watchdog is initially stopped watchdog: orion: Remove unused macros watchdog: orion: Use atomic access for shared registers watchdog: orion: Add clock error handling Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-02-22watchdog: orion: Enable the build on ARCH_MVEBUEzequiel Garcia
After adding support for Armada 370/XP SoC let's enable the build on these platforms. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Add support for Armada 370 and Armada XP SoCEzequiel Garcia
Using the added infrastructure for handling SoC differences, this commit adds support for the watchdog controller available in Armada 370 and Armada XP SoCs. Also, and because the AXP clock initialization uses of_clk_get_by_name, this commit changes the orion clock initialization to use clk_get() and adds a proper clk_put() on the common exit/error paths. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Add per-compatible watchdog start implementationEzequiel Garcia
To handle differences between SoCs this commit adds per-compatible string start() function for the watchdog kick-off. This is preparation work and makes no functionality changes to the current driver. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Add per-compatible clock initializationEzequiel Garcia
Following the introduction of the compatible-data field, it's now possible to further abstract the clock initialization. This will allow to support SoC with a different clock setup. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Introduce per-compatible of_device_id dataEzequiel Garcia
This commit adds an orion_watchdog_data structure to hold compatible-data information. This allows to remove the driver-wide definition and to be able to add support for multiple compatible-strings in the future. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Introduce an orion_watchdog device structureEzequiel Garcia
In order to prepare to support multiple compatible-strings, this commit adds a device structure to hold the driver's state. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Remove unneeded BRIDGE_CAUSE clearEzequiel Garcia
After adding the IRQ request, the BRIDGE_CAUSE bit should be cleared by the bridge interrupt controller. There's no longer a need to do it in the watchdog driver, so we can simply remove it. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Make RSTOUT register a separate resourceEzequiel Garcia
In order to support other SoC, it's required to distinguish the 'control' timer register, from the 'rstout' register that enables system reset on watchdog expiration. To prevent a compatibility break, this commit adds a fallback to a hardcoded RSTOUT address. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Handle the interrupt so it's properly ackedEzequiel Garcia
DT-enabled plaforms, where the irqchip driver for the brigde interrupt controller is available, can handle the watchdog IRQ properly. Therefore, request the interrupt and add a dummy handler that merely calls panic(). This is done in order to have an initial 'ack' of the interruption, which clears the watchdog state. Furthermore, since some platforms don't have such IRQ, this commit makes the interrupt specification optional. Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Make sure the watchdog is initially stoppedEzequiel Garcia
Having the watchdog initially fully stopped is important to avoid any spurious watchdog triggers, in case the registers are not in its reset state. If the watchdog rstout is enabled and the watchdog counter running, this initial stop is not performed, to comply with the 'nowayout' parameter. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Remove unused macrosEzequiel Garcia
These are not used anywhere so it's safe to remove them. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Use atomic access for shared registersEzequiel Garcia
Since the timer control register is shared with the clocksource driver, use the recently introduced atomic_io_clear_set() to access such register. Given the watchdog core already provides serialization for all the watchdog ops, this commit allows to remove the spinlock entirely. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-22watchdog: orion: Add clock error handlingEzequiel Garcia
This commit adds a check for clk_prepare_enable success and introduces an error path to disable the clock properly. Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com> Acked-by: Wim Van Sebroeck <wim@iguana.be> Tested-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2014-02-21watchdog: w83697hf_wdt: return ENODEV if no device was foundStanislav Kholmanskikh
Most WDT driver modules return ENODEV during modprobe if no valid device was found, but w83697hf_wdt returns EIO. Let w83697hf_wdt return ENODEV. Signed-off-by: Stanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-02-08watchdog: dw_wdt: Add dependency on HAS_IOMEMRichard Weinberger
On archs like S390 or um this driver cannot build nor work. Make it depend on HAS_IOMEM to bypass build failures. drivers/built-in.o: In function `dw_wdt_drv_probe': drivers/watchdog/dw_wdt.c:302: undefined reference to `devm_ioremap_resource' Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28watchdog: w83627hf_wdt: Reset watchdog trigger during initializationGuenter Roeck
If the watchdog has already triggered for whatever reason, it won't restart unless the trigger is reset. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28watchdog: w83627hf: Add support for W83697HF and W83697UGGuenter Roeck
Major difference is that the watchdog control and counter registers are different on both chips. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2014-01-28watchdog: w83627hf: Auto-detect IO address and supported chipsGuenter Roeck
Instead of requiring the user to provide an IO address per module parameter, auto-detect it as well as supported chips. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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