summaryrefslogtreecommitdiff
path: root/drivers/watchdog
AgeCommit message (Collapse)AuthorFilesLines
2023-02-22Merge tag 's390-6.3-1' of ↵Linus Torvalds1-125/+37
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux Pull s390 updates from Heiko Carstens: - Large cleanup of the con3270/tty3270 driver. Among others this fixes: - Background Color Support - ASCII Line Character Support - VT100 Support - Geometries other than 80x24 - Cleanup and improve cmpxchg() code. Also add cmpxchg_user_key() to uaccess functions, which will be used by KVM to access KVM guest memory with a specific storage key - Add support for user space events counting to CPUMF - Cleanup the vfio/ccw code, which also allows now to properly support 2K Format-2 IDALs - Move kernel page table allocation and initialization to decompressor, which finally allows to enter the kernel with dynamic address translation enabled. This in turn allows to get rid of code with special handling in the kernel, which has to distinguish if DAT is on or off - Replace kretprobe with rethook - Various improvements to vfio/ap queue resets: - Use TAPQ to verify completion of a reset in progress rather than multiple invocations of ZAPQ. - Check TAPQ response codes when verifying successful completion of ZAPQ. - Fix erroneous handling of some error response codes. - Increase the maximum amount of time to wait for successful completion of ZAPQ - Rework system call wrappers to get rid of alias functions, which were only left on s390 - Cleanup diag288_wdt watchdog driver. It has been agreed on with Guenter Roeck that this goes upstream via the s390 tree - Add missing loadparm parameter handling for list-directed ECKD ipl/reipl - Various improvements to memory detection code - Remove arch_cpu_idle_time() since the current implementation is broken, and allows user space observable accounted idle times which can temporarily decrease - Add Reset DAT-Protection support: (only) allow to change PTEs from RO to RW with a new RDP instruction. Unlike the currently used IPTE instruction, this does not necessarily guarantee that TLBs of all CPUs are synchronously flushed; and that remote CPUs can see spurious protection faults. The overall improvement for not requiring an all CPU synchronization, like it is required with IPTE, should be beneficial - Fix KFENCE page fault reporting - Smaller cleanups and improvement all over the place * tag 's390-6.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (182 commits) s390/irq,idle: simplify idle check s390/processor: add test_and_set_cpu_flag() and test_and_clear_cpu_flag() s390/processor: let cpu helper functions return boolean values s390/kfence: fix page fault reporting s390/zcrypt: introduce ctfm field in struct CPRBX s390: remove confusing comment from uapi types header file vfio/ccw: remove WARN_ON during shutdown s390/entry: remove toolchain dependent micro-optimization s390/mem_detect: do not truncate online memory ranges info s390/vx: remove __uint128_t type from __vector128 struct again s390/mm: add support for RDP (Reset DAT-Protection) s390/mm: define private VM_FAULT_* reasons from top bits Documentation: s390: correct spelling s390/ap: fix status returned by ap_qact() s390/ap: fix status returned by ap_aqic() s390: vfio-ap: tighten the NIB validity check Revert "s390/mem_detect: do not update output parameters on failure" s390/idle: remove arch_cpu_idle_time() and corresponding code s390/vx: use simple assignments to access __vector128 members s390/vx: add 64 and 128 bit members to __vector128 struct ...
2023-02-21Merge tag 'arm-boardfile-remove-6.3' of ↵Linus Torvalds3-88/+7
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM SoC boardfile updates from Arnd Bergmann "Unused boardfile removal for 6.3 This is a follow-up to the deprecation of most of the old-style board files that was merged in linux-6.0, removing them for good. This branch is almost exclusively dead code removal based on those annotations. Some device driver removals went through separate subsystem trees, but the majority is in the same branch, in order to better handle dependencies between the patches and avoid breaking bisection. Unfortunately that leads to merge conflicts against other changes in the subsystem trees, but they should all be trivial to resolve by removing the files. See commit 7d0d3fa7339e ("Merge tag 'arm-boardfiles-6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc") for the description of which machines were marked unused and are now removed. The only removals that got postponed are Terastation WXL (mv78xx0) and Jornada720 (StrongARM1100), which turned out to still have potential users" * tag 'arm-boardfile-remove-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (91 commits) mmc: omap: drop TPS65010 dependency ARM: pxa: restore mfp-pxa320.h usb: ohci-omap: avoid unused-variable warning ARM: debug: remove references in DEBUG_UART_8250_SHIFT to removed configs ARM: s3c: remove obsolete s3c-cpu-freq header MAINTAINERS: adjust SAMSUNG SOC CLOCK DRIVERS after s3c24xx support removal MAINTAINERS: update file entries after arm multi-platform rework and mach-pxa removal ARM: remove CONFIG_UNUSED_BOARD_FILES mfd: remove htc-pasic3 driver w1: remove ds1wm driver usb: remove ohci-tmio driver fbdev: remove w100fb driver fbdev: remove tmiofb driver mmc: remove tmio_mmc driver mfd: remove ucb1400 support mfd: remove toshiba tmio drivers rtc: remove v3020 driver power: remove pda_power supply driver ASoC: pxa: remove unused board support pcmcia: remove unused pxa/sa1100 drivers ...
2023-02-06watchdog: diag288_wdt: unify lpar and zvm diag288 helpersAlexander Egorenkov1-19/+13
Change naming of the internal diag288 helper functions to improve overall readability and reduce confusion: * Rename __diag288() to diag288(). * Get rid of the misnamed helper __diag288_lpar() that was used not only on LPARs but also zVM and KVM systems. * Rename __diag288_vm() to diag288_str(). Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230203073958.1585738-6-egorenar@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2023-02-06watchdog: diag288_wdt: de-duplicate diag_stat_inc() callsAlexander Egorenkov1-8/+3
Call diag_stat_inc() from __diag288() to reduce code duplication. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230203073958.1585738-5-egorenar@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2023-02-06watchdog: diag288_wdt: unify command buffer handling for diag288 zvmAlexander Egorenkov1-35/+20
Simplify and de-duplicate code by introducing a common single command buffer allocated once at initialization. Moreover, simplify the interface of __diag288_vm() by accepting ASCII strings as the command parameter and converting it to the EBCDIC format within the function itself. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230203073958.1585738-4-egorenar@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2023-02-06watchdog: diag288_wdt: remove power managementAlexander Egorenkov1-63/+2
Remove power management because s390 no longer supports hibernation since commit 394216275c7d ("s390: remove broken hibernate / power management support"). Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230203073958.1585738-3-egorenar@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2023-02-06watchdog: diag288_wdt: get rid of register asmAlexander Egorenkov1-8/+7
Using register asm statements has been proven to be very error prone, especially when using code instrumentation where gcc may add function calls, which clobbers register contents in an unexpected way. Therefore, get rid of register asm statements in watchdog code, and make sure this bug class cannot happen. Moreover, remove the register r1 from the clobber list because this register is not changed by DIAG 288. Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20230203073958.1585738-2-egorenar@linux.ibm.com Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2023-01-30watchdog: diag288_wdt: fix __diag288() inline assemblyAlexander Egorenkov1-1/+1
The DIAG 288 statement consumes an EBCDIC string the address of which is passed in a register. Use a "memory" clobber to tell the compiler that memory is accessed within the inline assembly. Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2023-01-30watchdog: diag288_wdt: do not use stack buffers for hardware dataAlexander Egorenkov1-2/+11
With CONFIG_VMAP_STACK=y the stack is allocated from the vmalloc space. Data passed to a hardware or a hypervisor interface that requires V=R can no longer be allocated on the stack. Use kmalloc() to get memory for a diag288 command. Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Heiko Carstens <hca@linux.ibm.com> Cc: <stable@vger.kernel.org> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
2023-01-16ARM: s3c: remove s3c24xx specific hacksArnd Bergmann2-86/+7
A number of device drivers reference CONFIG_ARM_S3C24XX_CPUFREQ or similar symbols that are no longer available with the platform gone, though the drivers themselves are still used on newer platforms, so remove these hacks. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-01-11ARM: footbridge: remove CATSArnd Bergmann1-2/+0
Nobody seems to have a CATS machine any more, so remove it now, leaving only NetWinder and EBSA285. Cc: Russell King <linux@armlinux.org.uk> Acked-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-12-17Merge tag 'linux-watchdog-6.2-rc1' of ↵Linus Torvalds12-64/+349
git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - Add Advantech EC watchdog driver - Add support for MT6795 Helio X10 watchdog and toprgu - Add support for MT8188 watchdog device - Remove #ifdef guards for PM related functions - Other fixes and improvements * tag 'linux-watchdog-6.2-rc1' of git://www.linux-watchdog.org/linux-watchdog: watchdog: aspeed: Enable pre-timeout interrupt watchdog: iTCO_wdt: Set NO_REBOOT if the watchdog is not already running watchdog: rn5t618: add support for read out bootstatus watchdog: kempld: Remove #ifdef guards for PM related functions watchdog: omap: Remove #ifdef guards for PM related functions watchdog: twl4030: Remove #ifdef guards for PM related functions watchdog: at91rm9200: Remove #ifdef guards for PM related functions watchdog: Add Advantech EC watchdog driver dt-bindings: watchdog: mediatek,mtk-wdt: Add compatible for MT8173 dt-bindings: watchdog: mediatek,mtk-wdt: Add compatible for MT6795 dt-bindings: watchdog: mediatek: Convert mtk-wdt to json-schema watchdog: mediatek: mt8188: add wdt support dt-bindings: reset: mt8188: add toprgu reset-controller header file dt-bindings: watchdog: Add compatible for MediaTek MT8188 watchdog: mtk_wdt: Add support for MT6795 Helio X10 watchdog and toprgu
2022-11-23ACPI: make remove callback of ACPI driver voidDawei Li1-3/+1
For bus-based driver, device removal is implemented as: 1 device_remove()-> 2 bus->remove()-> 3 driver->remove() Driver core needs no inform from callee(bus driver) about the result of remove callback. In that case, commit fc7a6209d571 ("bus: Make remove callback return void") forces bus_type::remove be void-returned. Now we have the situation that both 1 & 2 of calling chain are void-returned, so it does not make much sense for 3(driver->remove) to return non-void to its caller. So the basic idea behind this change is making remove() callback of any bus-based driver to be void-returned. This change, for itself, is for device drivers based on acpi-bus. Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Lee Jones <lee@kernel.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dawei Li <set_pte_at@outlook.com> Reviewed-by: Maximilian Luz <luzmaximilian@gmail.com> # for drivers/platform/surface/* Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2022-11-19watchdog: aspeed: Enable pre-timeout interruptEddie James1-16/+88
Enable the core pre-timeout interrupt on AST2500 and AST2600. Signed-off-by: Eddie James <eajames@linux.ibm.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221101205338.577427-2-eajames@linux.ibm.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: iTCO_wdt: Set NO_REBOOT if the watchdog is not already runningMika Westerberg1-7/+14
Daniel reported that the commit 1ae3e78c0820 ("watchdog: iTCO_wdt: No need to stop the timer in probe") makes QEMU implementation of the iTCO watchdog not to trigger reboot anymore when NO_REBOOT flag is initially cleared using this option (in QEMU command line): -global ICH9-LPC.noreboot=false The problem with the commit is that it left the unconditional setting of NO_REBOOT that is not cleared anymore when the kernel keeps pinging the watchdog (as opposed to the previous code that called iTCO_wdt_stop() that cleared it). Fix this so that we only set NO_REBOOT if the watchdog was not initially running. Fixes: 1ae3e78c0820 ("watchdog: iTCO_wdt: No need to stop the timer in probe") Reported-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Tested-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221028062750.45451-1-mika.westerberg@linux.intel.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: rn5t618: add support for read out bootstatusMarcus Folkesson1-0/+12
The PMIC does store the power-off factor internally. Read it out and report it as bootstatus. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Acked-by: Lee Jones <lee@kernel.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221028075019.2757812-1-marcus.folkesson@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: kempld: Remove #ifdef guards for PM related functionsPaul Cercueil1-9/+2
Use the pm_ptr() macro to handle the .suspend/.resume callbacks. This macro allows the suspend and resume functions to be automatically dropped by the compiler when CONFIG_SUSPEND is disabled, without having to use #ifdef guards. Not using #ifdef guards means that the code is always compiled independently of any Kconfig option, and thanks to that bugs and regressions are easier to catch. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221020185047.1001522-5-paul@crapouillou.net Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: omap: Remove #ifdef guards for PM related functionsPaul Cercueil1-9/+2
Use the pm_ptr() macro to handle the .suspend/.resume callbacks. This macro allows the suspend and resume functions to be automatically dropped by the compiler when CONFIG_SUSPEND is disabled, without having to use #ifdef guards. Not using #ifdef guards means that the code is always compiled independently of any Kconfig option, and thanks to that bugs and regressions are easier to catch. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221020185047.1001522-4-paul@crapouillou.net Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: twl4030: Remove #ifdef guards for PM related functionsPaul Cercueil1-7/+2
Use the pm_ptr() macro to handle the .suspend/.resume callbacks. This macro allows the suspend and resume functions to be automatically dropped by the compiler when CONFIG_SUSPEND is disabled, without having to use #ifdef guards. Not using #ifdef guards means that the code is always compiled independently of any Kconfig option, and thanks to that bugs and regressions are easier to catch. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221020185047.1001522-3-paul@crapouillou.net Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: at91rm9200: Remove #ifdef guards for PM related functionsPaul Cercueil2-16/+4
Use the pm_ptr() macro to handle the .suspend/.resume callbacks. This macro allows the suspend and resume functions to be automatically dropped by the compiler when CONFIG_SUSPEND is disabled, without having to use #ifdef guards. Not using #ifdef guards means that the code is always compiled independently of any Kconfig option, and thanks to that bugs and regressions are easier to catch. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://lore.kernel.org/r/20221020185047.1001522-2-paul@crapouillou.net Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: Add Advantech EC watchdog driverThomas Kastner3-0/+213
This patch adds the 'advantech_ec_wdt' kernel module which provides WDT support for Advantech platforms with ITE based Embedded Controller. Signed-off-by: Thomas Kastner <thomas.kastner@advantech.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Tested-by: Thomas Kastner <thomas.kastner@advantech.com> Link: https://lore.kernel.org/r/Y0+pl/26e3pcEUPk@EIS-S230 Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: mediatek: mt8188: add wdt supportRunyang Chen1-0/+6
Support MT8188 watchdog device. Signed-off-by: Runyang Chen <runyang.chen@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Link: https://lore.kernel.org/r/20221026063327.20037-4-Runyang.Chen@mediatek.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-19watchdog: mtk_wdt: Add support for MT6795 Helio X10 watchdog and toprguAngeloGioacchino Del Regno1-0/+6
Add support for the toprgu reset controller and watchdog for the MediaTek MT6795 SoC. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Co-developed-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com> Signed-off-by: Allen-KH Cheng <allen-kh.cheng@mediatek.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221005113517.70628-6-angelogioacchino.delregno@collabora.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-11-01Merge tag 'linux-watchdog-6.1-rc4' of ↵Linus Torvalds2-2/+4
git://www.linux-watchdog.org/linux-watchdog Pull watchdog fixes from Wim Van Sebroeck: - fix use after free in exar driver - spelling fix in comment * tag 'linux-watchdog-6.1-rc4' of git://www.linux-watchdog.org/linux-watchdog: drivers: watchdog: exar_wdt.c fix use after free watchdog: sp805_wdt: fix spelling typo in comment
2022-10-21Merge tag 'linux-watchdog-6.1-rc2' of ↵Linus Torvalds2-2/+14
git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - Add tracing events for the most common watchdog events * tag 'linux-watchdog-6.1-rc2' of git://www.linux-watchdog.org/linux-watchdog: watchdog: Add tracing events for the most usual watchdog events
2022-10-19drivers: watchdog: exar_wdt.c fix use after freeManank Patel1-1/+3
fix use after free by storing the result of PTR_ERR(n->pdev) to a local variable before returning. Signed-off-by: Manank Patel <pmanank200502@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221013095258.1424967-1-pmanank200502@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-19watchdog: sp805_wdt: fix spelling typo in commentJiangshan Yi1-1/+1
Fix spelling typo in comment. Reported-by: k2ci <kernel-bot@kylinos.cn> Signed-off-by: Jiangshan Yi <yijiangshan@kylinos.cn> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221009083944.2988237-1-13667453960@163.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-13Merge tag 'linux-watchdog-6.1-rc1' of ↵Linus Torvalds22-105/+808
git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - new driver for Exar/MaxLinear XR28V38x - support for exynosautov9 SoC - support for Renesas R-Car V5H (R8A779G0) and RZ/V2M (r9a09g011) SoC - support for imx93 - several other fixes and improvements * tag 'linux-watchdog-6.1-rc1' of git://www.linux-watchdog.org/linux-watchdog: (36 commits) watchdog: twl4030_wdt: add missing mod_devicetable.h include dt-bindings: watchdog: migrate mt7621 text bindings to YAML watchdog: sp5100_tco: Add "action" module parameter watchdog: imx93: add watchdog timer on imx93 watchdog: imx7ulp_wdt: init wdog when it was active watchdog: imx7ulp_wdt: Handle wdog reconfigure failure watchdog: imx7ulp_wdt: Fix RCS timeout issue watchdog: imx7ulp_wdt: Check CMD32EN in wdog init watchdog: imx7ulp: Add explict memory barrier for unlock sequence watchdog: imx7ulp: Move suspend/resume to noirq phase watchdog: rti-wdt:using the pm_runtime_resume_and_get to simplify the code dt-bindings: watchdog: rockchip: add rockchip,rk3128-wdt watchdog: s3c2410_wdt: support exynosautov9 watchdog dt-bindings: watchdog: add exynosautov9 compatible watchdog: npcm: Enable clock if provided watchdog: meson: keep running if already active watchdog: dt-bindings: atmel,at91sam9-wdt: convert to json-schema watchdog: armada_37xx_wdt: Fix .set_timeout callback watchdog: sa1100: make variable sa1100dog_driver static watchdog: w83977f_wdt: Fix comment typo ...
2022-10-12watchdog: Add tracing events for the most usual watchdog eventsUwe Kleine-König2-2/+14
To simplify debugging which process touches a watchdog and when, add tracing events for .start(), .set_timeout(), .ping() and .stop(). Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20221008174602.3972859-1-u.kleine-koenig@pengutronix.de Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-10Merge tag 'powerpc-6.1-1' of ↵Linus Torvalds2-8/+8
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Remove our now never-true definitions for pgd_huge() and p4d_leaf(). - Add pte_needs_flush() and huge_pmd_needs_flush() for 64-bit. - Add support for syscall wrappers. - Add support for KFENCE on 64-bit. - Update 64-bit HV KVM to use the new guest state entry/exit accounting API. - Support execute-only memory when using the Radix MMU (P9 or later). - Implement CONFIG_PARAVIRT_TIME_ACCOUNTING for pseries guests. - Updates to our linker script to move more data into read-only sections. - Allow the VDSO to be randomised on 32-bit. - Many other small features and fixes. Thanks to Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Athira Rajeev, Christophe Leroy, David Hildenbrand, Disha Goel, Fabiano Rosas, Gaosheng Cui, Gustavo A. R. Silva, Haren Myneni, Hari Bathini, Jilin Yuan, Joel Stanley, Kajol Jain, Kees Cook, Krzysztof Kozlowski, Laurent Dufour, Liang He, Li Huafei, Lukas Bulwahn, Madhavan Srinivasan, Nathan Chancellor, Nathan Lynch, Nicholas Miehlbradt, Nicholas Piggin, Pali Rohár, Rohan McLure, Russell Currey, Sachin Sant, Segher Boessenkool, Shrikanth Hegde, Tyrel Datwyler, Wolfram Sang, ye xingchen, and Zheng Yongjun. * tag 'powerpc-6.1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (214 commits) KVM: PPC: Book3S HV: Fix stack frame regs marker powerpc: Don't add __powerpc_ prefix to syscall entry points powerpc/64s/interrupt: Fix stack frame regs marker powerpc/64: Fix msr_check_and_set/clear MSR[EE] race powerpc/64s/interrupt: Change must-hard-mask interrupt check from BUG to WARN powerpc/pseries: Add firmware details to the hardware description powerpc/powernv: Add opal details to the hardware description powerpc: Add device-tree model to the hardware description powerpc/64: Add logical PVR to the hardware description powerpc: Add PVR & CPU name to hardware description powerpc: Add hardware description string powerpc/configs: Enable PPC_UV in powernv_defconfig powerpc/configs: Update config files for removed/renamed symbols powerpc/mm: Fix UBSAN warning reported on hugetlb powerpc/mm: Always update max/min_low_pfn in mem_topology_setup() powerpc/mm/book3s/hash: Rename flush_tlb_pmd_range powerpc: Drops STABS_DEBUG from linker scripts powerpc/64s: Remove lost/old comment powerpc/64s: Remove old STAB comment powerpc: remove orphan systbl_chk.sh ...
2022-10-07watchdog: twl4030_wdt: add missing mod_devicetable.h includeDmitry Torokhov1-0/+1
The driver is using of_device_id and therefore needs to include mod_devicetable.h header. We used to get this definition indirectly via inclusion of matrix_keypad.h from twl.h, but we are cleaning up matrix_keypad.h from unnecessary includes. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220927154611.3330871-1-dmitry.torokhov@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-06Merge tag 'arm-drivers-6.1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM driver updates from Arnd Bergmann: "The drivers branch for 6.1 is a bit larger than for most releases. Most of the changes come from SoC maintainers for the drivers/soc subsystem: - A new driver for error handling on the NVIDIA Tegra 'control backbone' bus. - A new driver for Qualcomm LLCC/DDR bandwidth measurement - New Rockchip rv1126 and rk3588 power domain drivers - DT binding updates for memory controllers, older Rockchip SoCs, various Mediatek devices, Qualcomm SCM firmware - Minor updates to Hisilicon LPC bus, the Allwinner SRAM driver, the Apple rtkit firmware driver, Tegra firmware - Minor updates for SoC drivers (Samsung, Mediatek, Renesas, Tegra, Qualcomm, Broadcom, NXP, ...) There are also some separate subsystem with downstream maintainers that merge updates this way: - Various updates and new drivers in the memory controller subsystem for Mediatek and Broadcom SoCs - Small set of changes in preparation to add support for FF-A v1.1 specification later, in the Arm FF-A firmware subsystem - debugfs support in the PSCI firmware subsystem" * tag 'arm-drivers-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (149 commits) ARM: remove check for CONFIG_DEBUG_LL_SER3 firmware/psci: Add debugfs support to ease debugging firmware/psci: Print a warning if PSCI doesn't accept PC mode dt-bindings: memory: snps,dw-umctl2-ddrc: Extend schema with IRQs/resets/clocks props dt-bindings: memory: snps,dw-umctl2-ddrc: Replace opencoded numbers with macros dt-bindings: memory: snps,dw-umctl2-ddrc: Use more descriptive device name dt-bindings: memory: synopsys,ddrc-ecc: Detach Zynq DDRC controller support soc: sunxi: sram: Add support for the D1 system control soc: sunxi: sram: Export the LDO control register soc: sunxi: sram: Save a pointer to the OF match data soc: sunxi: sram: Return void from the release function soc: apple: rtkit: Add apple_rtkit_poll soc: imx: add i.MX93 media blk ctrl driver soc: imx: add i.MX93 SRC power domain driver soc: imx: imx8m-blk-ctrl: Use genpd_xlate_onecell soc: imx: imx8mp-blk-ctrl: handle PCIe PHY resets soc: imx: imx8m-blk-ctrl: add i.MX8MP VPU blk ctrl soc: imx: add i.MX8MP HDMI blk ctrl HDCP/HRV_MWR soc: imx: add icc paths for i.MX8MP hsio/hdmi blk ctrl soc: imx: add icc paths for i.MX8MP media blk ctrl ...
2022-10-02watchdog: sp5100_tco: Add "action" module parameterVladimir Panteleev1-2/+11
Allow configuring the "action" bit, as documented in [1]. Previously, the only action supported by this module was to reset the system (0). It can now be configured to power off (1) instead. [1]: https://www.amd.com/system/files/TechDocs/44413.pdf Signed-off-by: Vladimir Panteleev <git@vladimir.panteleev.md> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220920092721.7686-1-git@vladimir.panteleev.md Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: imx93: add watchdog timer on imx93Alice Guo1-5/+28
The WDOG clocks are sourced from lpo_clk, and lpo_clk is the fixed 32KHz. TOVAL contains the 16-bit value used to set the timeout period of the watchdog. When the timeout period exceeds 2 seconds, the value written to the TOVAL register is larger than 16-bit can represent. Enabling watchdog prescaler can solve this problem. Two points need to be aware of: 1. watchdog prescaler enables a fixed 256 pre-scaling of watchdog counter reference clock 2. reconfiguration takes about 55ms on imx93 Reviewed-by: Jacky Bai <ping.bai@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220825083256.14565-8-alice.guo@oss.nxp.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: imx7ulp_wdt: init wdog when it was activeJason Liu1-10/+3
Paired with suspend, we can only init wdog again when it was active and ping it once to avoid the watchdog timeout after it resumed. Signed-off-by: Jason Liu <jason.hui.liu@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Ye Li <ye.li@nxp.com> Reviewed-by: Jacky Bai <ping.bai@nxp.com> Tested-by: Jacky Bai <ping.bai@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220825083256.14565-7-alice.guo@oss.nxp.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: imx7ulp_wdt: Handle wdog reconfigure failureYe Li1-34/+129
Current driver may meet reconfigure failure caused by below reasons: 1. The wdog on iMX7ULP has different behavior after RCS valid. It needs to wait more than 2.5 wdog clock for clock sync before next reconfiguration, while imx8ulp wdog does not need such delay. 2. After unlock, there is 128 bus clock window opened for reconfiguration, but on iMX8ULP, the HW can't guarantee the latency. So it is possible the window is closed before the writing arrives to wdog. 3. If the PRES is enabled, the RCS valid time becomes x256 to the time of PRES disabled. It is about 1715ms on iMX8ULP. So We have to increase the RCS timeout and can't wait it in IRQ disabled. The patch updates the driver to handle failures 1. Using different wait for unlock and RCS. Unlock valid time is very short and only related to bus clock. It must be in IRQ disabled to avoid being interrupted in 128 clock window. But for RCS time, it is longer and ok for IRQ enabled. 2. Add retry for any reconfigure failure with default 5 times. 3. Add "fsl,imx8ulp-wdt" compatile string for iMX8ULP and afterwards platform which don't need more 2.5 wdog clock after RCS valid. For imx7ulp, add post delay of 2.5 clock after RCS valid. Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Jacky Bai <ping.bai@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220825083256.14565-6-alice.guo@oss.nxp.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: imx7ulp_wdt: Fix RCS timeout issueYe Li1-3/+5
According to measure on i.MX7ULP and i.MX8ULP, the RCS done needs about 3400us and 6700us respectively. So current 20us timeout is not enough. When reconfiguring is on-going, unlock and configure CS will lead to unknown result. Increase the wait timeout value to 10ms and check the return value of RCS wait to fix the issue Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Jacky Bai <ping.bai@nxp.com> Acked-by: Jason Liu <jason.hui.liu@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220825083256.14565-5-alice.guo@oss.nxp.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: imx7ulp_wdt: Check CMD32EN in wdog initYe Li1-5/+10
When bootloader has enabled the CMD32EN bit, switch to use 32bits unlock command to unlock the CS register. Using 32bits command will help on avoiding 16 bus cycle window violation for two 16 bits commands. Signed-off-by: Ye Li <ye.li@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Jacky Bai <ping.bai@nxp.com> Acked-by: Jason Liu <jason.hui.liu@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220825083256.14565-4-alice.guo@oss.nxp.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: imx7ulp: Add explict memory barrier for unlock sequenceJacky Bai1-0/+4
When reconfiguring the WDOG Timer of i.MX7ULP, there is a certain probability causes it to reset. The reason is that the CMD32EN of the WDOG Timer of i.MX7ULP is disabled in bootloader. The unlock sequence are two 16-bit writes to the CNT register within 16 bus clocks. Adding mb() is to guarantee that two 16-bit writes are finished within 16 bus clocks. Memory barriers cannot be added between these two 16-bit writes so that writel_relaxed is used. Suggested-by: Ye Li <ye.li@nxp.com> Signed-off-by: Jacky Bai <ping.bai@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Ye Li <ye.li@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220825083256.14565-3-alice.guo@oss.nxp.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: imx7ulp: Move suspend/resume to noirq phaseAnson Huang1-4/+6
The i.MX7ULP's watchdog is enabled by default when out of reset, so the resume callback which is to disable watchdog should be called earlier to avoid unexpected timeout, move suspend/resume callback to noirq phase. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Alice Guo <alice.guo@nxp.com> Reviewed-by: Jacky Bai <ping.bai@nxp.com> Tested-by: Peter Chen <peter.chen@nxp.com> Tested-by: Li Jun <jun.li@nxp.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220825083256.14565-2-alice.guo@oss.nxp.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: rti-wdt:using the pm_runtime_resume_and_get to simplify the codeye xingchen1-2/+1
Using pm_runtime_resume_and_get() to instade of pm_runtime_get_sync and pm_runtime_put_noidle. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220802074643.1648660-1-ye.xingchen@zte.com.cn Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: s3c2410_wdt: support exynosautov9 watchdogChanho Park1-4/+37
Like exynos850, exynosautov9 SoC also has two cpu watchdogs. Unfortunately, some configurations are slightly different so we need to add samsung,exynosautov9-wdt and separate drv data for those watchdogs. Signed-off-by: Chanho Park <chanho61.park@samsung.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220520121750.71473-3-chanho61.park@samsung.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: npcm: Enable clock if providedJonathan Neuschäfer1-0/+16
On the Nuvoton WPCM450 SoC, with its upcoming clock driver, peripheral clocks are individually gated and ungated. Therefore, the watchdog driver must be able to ungate the watchdog clock. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220610072141.347795-3-j.neuschaefer@gmx.net Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: meson: keep running if already activePhilippe Boos1-5/+19
If the watchdog is already running (e.g.: started by bootloader) then the kernel driver should keep the watchdog active but the amlogic driver turns it off. Let the driver fix the clock rate if already active because we do not know the previous timebase value. To avoid unintentional resetting we temporarily set it to its maximum value. Then keep the enable bit if is was previously active. Signed-off-by: Philippe Boos <pboos@baylibre.com> Reviewed-by: Jerome Brunet <jbrunet@baylibre.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220801092150.4449-1-pboos@baylibre.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: armada_37xx_wdt: Fix .set_timeout callbackPali Rohár1-0/+2
ioctl(WDIOC_SETTIMEOUT) calls .set_timeout and .ping callbacks and it is expected that it changes current watchdog timeout. armada_37xx_wdt's .ping callback just reping counter 0 and does not touch counter 1 used for timeout. So it is needed to set counter 1 to the new value in .set_timeout callback to ensure ioctl(WDIOC_SETTIMEOUT) functionality. Fix it. Fixes: 54e3d9b518c8 ("watchdog: Add support for Armada 37xx CPU watchdog") Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Marek Behún <kabel@kernel.org> Link: https://lore.kernel.org/r/20220726085612.10672-1-pali@kernel.org Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: sa1100: make variable sa1100dog_driver staticsunliming1-1/+1
This symbol is not used outside of sa1100_wdt.c, so marks it static. Fixes the following warning: >> drivers/watchdog/sa1100_wdt.c:241:24: sparse: sparse: symbol 'sa1100dog_driver' was not declared. Should it be static? Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: sunliming <sunliming@kylinos.cn> Acked-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220802020819.1226454-1-sunliming@kylinos.cn Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: w83977f_wdt: Fix comment typoJason Wang1-1/+1
The double `we' is duplicated in the comment, remove one. Signed-off-by: Jason Wang <wangborong@cdjrlc.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220802201109.6843-1-wangborong@cdjrlc.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: eurotechwdt: Remove redundant word in commentsshaomin Deng1-1/+1
There is a rebundant word "we" in comments, so remove it. Signed-off-by: shaomin Deng <dengshaomin@cdjrlc.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220808153956.8374-1-dengshaomin@cdjrlc.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: Check dev_set_name() return valueBo Liu1-1/+5
It's possible that dev_set_name() returns -ENOMEM, catch and handle this. Signed-off-by: Bo Liu <liubo03@inspur.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220920020312.2383-1-liubo03@inspur.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
2022-10-02watchdog: rzg2l_wdt: Add rzv2m supportPhil Edworthy1-6/+33
The WDT on RZ/V2M devices is basically the same as RZ/G2L, but without the parity error registers. This means the driver has to reset the hardware plus set the minimum timeout in order to do a restart and has a single interrupt. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/20220823093233.8577-3-phil.edworthy@renesas.com Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-17 12:09:26 +0300