- 31 3月, 2014 2 次提交
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由 Paul Gortmaker 提交于
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: NPaul Gortmaker <paul.gortmaker@windriver.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be> Cc: linux-watchdog@vger.kernel.org
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由 Christophe Leroy 提交于
MPC8xx watchdog is enabled at startup by HW. If the bootloader disables it, it cannot be reenabled. Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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- 22 2月, 2014 1 次提交
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由 Stanislav Kholmanskikh 提交于
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: NStanislav Kholmanskikh <stanislav.kholmanskikh@oracle.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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- 08 2月, 2014 1 次提交
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由 Richard Weinberger 提交于
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: NRichard Weinberger <richard@nod.at> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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- 29 1月, 2014 27 次提交
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由 Guenter Roeck 提交于
If the watchdog has already triggered for whatever reason, it won't restart unless the trigger is reset. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Guenter Roeck 提交于
Major difference is that the watchdog control and counter registers are different on both chips. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Guenter Roeck 提交于
Instead of requiring the user to provide an IO address per module parameter, auto-detect it as well as supported chips. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Boris BREZILLON 提交于
Try to reset the watchdog counter 4 or 2 times more often than actually requested, to avoid spurious watchdog reset. If this is not possible because of the min_heartbeat value, reset it at the min_heartbeat period. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Boris BREZILLON 提交于
Use the min_heartbeat value instead of the calculated heartbeat value for the first watchdog reset to avoid spurious watchdog reset. Resetting the watchdog counter during init might lead to a watchdog fault reset because the watchdog counter has to be running for at least min_heartbeat. Resetting the watchdog counter after heartbeat might lead to a watchdog timeout reset because the watchdog counter is running for more than max_heartbeat time. Using min_heartbeat instead of heartbeat does not guarantee that the watchdog won't trigger a reset, but at least it reduces the chances to be in such a case. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Boris BREZILLON 提交于
Fix the secs_to_ticks macro in case 0 is passed as an argument. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Boris BREZILLON 提交于
The at91sam9 watchdog timer can only be configured once, and the current implementation tries to configure it in a static way: - 2 seconds timeout - wdt restart every 500ms If the timer has already been configured with different values, it returns an error and do not create any watchdog device. This is not critical if the watchdog is disabled, but if it has been enabled with different timeout values it will lead to a SoC reset. This patch series tries to address this issue by adapting the heartbeat value according the WDT timer config: - it first tries to configure the timer as requested. - if it fails it fallbacks to the current config, adapting its heartbeat timer to the needs This patch series also move to a dynamically allocated at91wdt device instead of the static instance. It adds a new at91 wdt type: software. This new type make use of the at91 wdt interrupt to trigger a software reboot. Finally it adds several properties to the device tree bindings. Signed-off-by: NBoris BREZILLON <b.brezillon@overkiz.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Naresh Bhat 提交于
Add sp805_wdt depends on ARM64. Signed-off-by: NNaresh Bhat <naresh.bhat@linaro.org> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Jonas Jensen 提交于
mach-moxart lacks a separate register for reset; as a workaround, add a function that can be hooked to arm_pm_restart. Signed-off-by: NJonas Jensen <jonas.jensen@gmail.com> Acked-by: NArnd Bergmann <arnd@arndb.de> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Christophe Leroy 提交于
Convert mpc8xxx_wdt.c to the new watchdog API. Signed-off-by: NChristophe Leroy <christophe.leroy@c-s.fr> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Sachin Kamat 提交于
'sirfsoc_wdt_of_match' is always compiled in. Hence the helper macro is not needed. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Thomas Mingarelli 提交于
This patch is being submitted to output a general string when the panic comes in that informs the user of the possible places to look for the source of the NMI. Because various systems log the message in different places this would give a single display of where to go look instead of code that acts on all these different server names or IDs. Signed-off-by: NThomas Mingarelli <thomas.mingarelli@hp.com> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Baruch Siach 提交于
There is nothing ARM specific in this driver, and we intend to use it on the Xtensa architecture. Also, clk.h now includes stubs for !CONFIG_HAVE_CLK, so the driver should build anyway. Signed-off-by: NBaruch Siach <baruch@tkos.co.il> Acked-by: NJamie Iles <jamie@jamieiles.com> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Anson Huang 提交于
We should set watchdog timer to be disabled in low power mode, as there is no service running in background, otherwise, system will reset unexpected. Signed-off-by: NAnson Huang <b20788@freescale.com> Acked-by: NShawn Guo <shawn.guo@linaro.org> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Doug Anderson 提交于
A good watchdog driver is supposed to report when it was responsible for resetting the system. Implement this for the s3c2410, at least on exynos5250 and exynos5420 where we already have a pointer to the PMU registers to read the information. Note that exynos4 SoCs also provide the reset status, but providing that is left as an exercise for future changes and is not plumbed up in this patch series. Also note the exynos4 SoCs don't appear to need any PMU config, which is why this patch separates the concepts of having PMU Registers vs. needing PMU Config. Signed-off-by: NDoug Anderson <dianders@chromium.org> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Leela Krishna Amudala 提交于
Add device tree support for exynos5250 and 5420 SoCs and use syscon regmap interface to configure AUTOMATIC_WDT_RESET_DISABLE and MASK_WDT_RESET_REQUEST registers of PMU to mask/unmask enable/disable of watchdog in probe and s2r scenarios. Signed-off-by: NLeela Krishna Amudala <l.krishna@samsung.com> Signed-off-by: NDoug Anderson <dianders@chromium.org> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Doug Anderson 提交于
The existing watchdog timeout worked OK but didn't deal with rounding in an ideal way when dividing out all of its clocks. Specifically if you had a timeout of 32 seconds and an input clock of 66666666, you'd end up setting a timeout of 31.9998 seconds and reporting a timeout of 31 seconds. Specifically DBG printouts showed: s3c2410wdt_set_heartbeat: count=16666656, timeout=32, freq=520833 s3c2410wdt_set_heartbeat: timeout=32, divisor=255, count=16666656 (0000ff4f) and the final timeout reported to the user was: ((count / divisor) * divisor) / freq (0xff4f * 255) / 520833 = 31 (truncated from 31.9998) the technically "correct" value is: (0xff4f * 255) / (66666666.0 / 128) = 31.9998 By using "DIV_ROUND_UP" we can be a little more correct. s3c2410wdt_set_heartbeat: count=16666688, timeout=32, freq=520834 s3c2410wdt_set_heartbeat: timeout=32, divisor=255, count=16666688 (0000ff50) and the final timeout reported to the user: (0xff50 * 255) / 520834 = 32 the technically "correct" value is: (0xff50 * 255) / (66666666.0 / 128) = 32.0003 We'll use a DIV_ROUND_UP to solve this, generally erroring on the side of reporting shorter values to the user and setting the watchdog to slightly longer than requested: * Round input frequency up to assume watchdog is counting faster. * Round divisions by divisor up to give us extra time. At the same time we can avoid a for loop by just doing the right math. Signed-off-by: NDoug Anderson <dianders@chromium.org> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Doug Anderson 提交于
On modern SoCs the watchdog timer is parented on a clock that doesn't change every time we have a cpufreq change. That means we don't need to constantly adjust the watchdog timer, so avoid registering for and dealing with cpufreq transitions unless we've actually got CONFIG_ARM_S3C24XX_CPUFREQ defined. Note that this is more than just an optimization. The s3c2410 watchdog driver actually pats the watchdog on every CPU frequency change. On modern systems these happen many times per second (even in a system where "nothing" is happening). That effectively makes any userspace watchdog program useless (the watchdog is constantly patted by the kernel). If we need ARM_S3C24XX_CPUFREQ defined on a multiplatform kernel we'll need to make sure that kernel supports common clock and change this to user common clock framework. Signed-off-by: NDoug Anderson <dianders@chromium.org> Reviewed-by: NTomasz Figa <t.figa@samsung.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Alexander Shiyan 提交于
This patch adds a watchdog driver for devices controlled through GPIO, (Analog Devices ADM706, Maxim MAX823, National NE555 etc). Signed-off-by: NAlexander Shiyan <shc_work@mail.ru> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Ivan Khoronzhuk 提交于
The keystone arch uses the same IP watchdog, so add "ti,keystone-wdt" compatible and correct identity. The Keystone arch is using clocks in DT and source clock for watchdog has to be specified, so add this to binding. Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@ti.com> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Ivan Khoronzhuk 提交于
Currently, the davinci watchdog can be read while counting, so we can add ability to report the remaining time before the system will reboot. Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@ti.com> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Ivan Khoronzhuk 提交于
Some SoCs, like Keystone 2, can support more than one WDT and each watchdog device has to use it's own base address, clock source, watchdog device, so add new davinci_wdt_device structure to hold device data. Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@ti.com> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: NGuenter roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Ivan Khoronzhuk 提交于
To reduce code duplicate and increase code readability use WDT core code to handle WDT interface. Remove io_lock as the WDT core uses mutex to lock each wdt device. Remove wdt_state as the WDT core tracks state with its own variable. The watchdog_init_timeout() can read timeout value from timeout-sec property if the passed value is out of bounds. The heartbeat is initialized in next way. If heartbeat is not set thought module parameter, try to read it's value from WDT node timeout-sec property. If node has no one, use default value. The heartbeat is hold in wdd->timeout by WDT core, so use it in order to set timeout period. Davinci WDT can't be stopped and once it's expired - it can be rearmed only after hardware reset, that's why nowayout feature is enforced. Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@ti.com> Acked-by: NSantosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Markus Mayer 提交于
This change introduces debugfs support for the BCM281xx watchdog driver. Signed-off-by: NMarkus Mayer <markus.mayer@linaro.org> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Markus Mayer 提交于
This commit adds support for the watchdog timer used on the BCM281xx family of SoCs. Signed-off-by: NMarkus Mayer <markus.mayer@linaro.org> Reviewed-by: NMatt Porter <matt.porter@linaro.org> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Doug Anderson 提交于
It is valid for a watchdog driver to have 0 for a "min" and "max" timeout if the driver doesn't need the core to enforce the concepts of min and max. The s3c2410_wdt driver is one such driver. Specifically it can be hard for that driver to come up with a static "max" on all platforms without a lot more information since the input clock on S3C2410 and S3C2440 can change with DVFS. As written, watchdog_init_timeout() will not ever read "timeout-sec" on these drivers since watchdog_timeout_invalid() will _never_ return true. Change to not consider a timeout_parm of 0 as valid even if min/max aren't specified by the driver. Also handle the case when there is no min/max and no "timeout-sec" property. Signed-off-by: NDoug Anderson <dianders@chromium.org> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Jingoo Han 提交于
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by: NJingoo Han <jg1.han@samsung.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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- 09 1月, 2014 1 次提交
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由 Ivan Khoronzhuk 提交于
As we switch to use the watchdog core which permits more than one active watchdog in the system, rename platform driver to "davinci-wdt" to be identifiable. Acked-by: NWim Van Sebroeck <wim@iguana.be> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NIvan Khoronzhuk <ivan.khoronzhuk@ti.com> Signed-off-by: NSekhar Nori <nsekhar@ti.com>
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- 08 1月, 2014 1 次提交
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由 Greg Kroah-Hartman 提交于
CONFIG_USB_DEBUG is going away, and all of the other USB drivers no longer rely on "debug" module parameters for debugging lines, so move the pcwd_usb driver to use the dynamic debug infrastructure to be more in line with the rest of the kernel. Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Wim Van Sebroeck <wim@iguana.be> Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
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- 10 12月, 2013 2 次提交
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由 Alan 提交于
If loaded with isapnp = 0 the driver explodes. This is catching people out now and then. What should happen in the working case is a complete mystery and the code appears terminally confused, but we can at least make the error path work properly. Signed-off-by: NAlan Cox <alan@linux.intel.com> Reviewed-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be> Partially-Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=53991
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由 Guenter Roeck 提交于
After commit 487722cf (watchdog: Get rid of MODULE_ALIAS_MISCDEV statements) the affected drivers no longer need to include miscdevice.h. Only exception is rt2880_wdt.c which never needed it. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Reviewed-by: NJean Delvare <jdelvare@suse.de> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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- 19 11月, 2013 4 次提交
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由 Guenter Roeck 提交于
Use helper functions named similar to other drivers to access superio registers. Request memory region only when needed, and use request_muxed_region(). This lets other devices (hwmon, gpio) use the same region. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Guenter Roeck 提交于
There is no need to enable the watchdog device if it is already enabled. Also, when enabling the watchdog device, only set the watchdog device enable bit and do not touch other bits; depending on the chip type, those bits may enable other functionality. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Guenter Roeck 提交于
It is unnecessary to enable the logical device and WDT0 each time the watchdog is accessed. Do it only once during initialization. Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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由 Guenter Roeck 提交于
Signed-off-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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- 18 11月, 2013 1 次提交
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由 Victor Kamensky 提交于
All OMAP IP blocks expect LE data, but CPU may operate in BE mode. Need to use endian neutral functions to read/write h/w registers. I.e instead of __raw_read[lw] and __raw_write[lw] functions code need to use read[lw]_relaxed and write[lw]_relaxed functions. If the first simply reads/writes register, the second will byteswap it if host operates in BE mode. Changes are trivial sed like replacement of __raw_xxx functions with xxx_relaxed variant. Signed-off-by: NVictor Kamensky <victor.kamensky@linaro.org> Signed-off-by: NTaras Kondratiuk <taras.kondratiuk@linaro.org> Acked-by: NGuenter Roeck <linux@roeck-us.net> Signed-off-by: NWim Van Sebroeck <wim@iguana.be>
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