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2017-07-03watchdog: bcm47xx_wdt: constify bcm47xx_wdt_hard_ops and bcm47xx_wdt_soft_opsArvind Yadav1-2/+2
File size before: text data bss dec hex filename 1282 388 1 1671 687 drivers/watchdog/bcm47xx_wdt.o File size After adding 'const': text data bss dec hex filename 1474 196 1 1671 687 drivers/watchdog/bcm47xx_wdt.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.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: davinci: Add missing clk_disable_unprepare().Arvind Yadav1-1/+3
davinci_wdt_probe() can fail here and we must disable clock. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.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: davinci: Handle return value of clk_prepare_enableArvind Yadav1-1/+5
clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.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: meson: Handle return value of clk_prepare_enableArvind Yadav1-1/+3
clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.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 Roeck2-5/+21
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: Use infrastructure to stop watchdog on rebootGuenter Roeck1-29/+5
Use watchdog_stop_on_reboot() to stop the watchdog on reboot instead of registering a driver-specific notifier. While at it, reorder remaining include files alphabetically. 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 Roeck2-210/+19
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 Roeck2-304/+72
Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-07-03watchdog: it87: Drop FSF mailing addressGuenter Roeck1-4/+0
The FSF mailing address may change. Drop it. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-07-03watchdog: dw_wdt: get reset lines from dtSteffen Trumtrar1-0/+11
The dw_wdt has an external reset line, that can keep the device in reset and therefore rendering it useless and also is the only way of stopping the watchdog once it was started. Get the reset lines for this core from the devicetree. As these lines are optional, use devm_reset_control_get_optional_shared. If the reset line is not specified in the devicetree, the reset framework will just skip deasserting and continue. This way all users of the driver will continue to function without any harm, even if the reset line is not specified in the devicetree. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Cc: linux-watchdog@vger.kernel.org Reviewed-by: Philipp Zabel <p.zabel@pengutronix.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>
2017-07-03watchdog: bindings: dw_wdt: add reset linesSteffen Trumtrar1-0/+3
Document the reset lines holding the watchdog core in reset. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: linux-watchdog@vger.kernel.org Cc: devicetree@vger.kernel.org Acked-by: Rob Herring <robh@kernel.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>
2017-06-05watchdog: w83627hf: Add support for NCT6793D and NCT6795DGuenter Roeck1-1/+14
Both NCT6793D and NCT6795D are compatible to NCT6792D. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
2017-06-05watchdog: core: add option to avoid early handling of watchdogSebastian Reichel2-3/+27
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. Szmigiero2-10/+24
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 Fertre3-0/+266
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>