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* include/linux/compiler*.h: make compiler-*.h mutually exclusiveNick Desaulniers2018-08-221-5/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit cafa0010cd51 ("Raise the minimum required gcc version to 4.6") recently exposed a brittle part of the build for supporting non-gcc compilers. Both Clang and ICC define __GNUC__, __GNUC_MINOR__, and __GNUC_PATCHLEVEL__ for quick compatibility with code bases that haven't added compiler specific checks for __clang__ or __INTEL_COMPILER. This is brittle, as they happened to get compatibility by posing as a certain version of GCC. This broke when upgrading the minimal version of GCC required to build the kernel, to a version above what ICC and Clang claim to be. Rather than always including compiler-gcc.h then undefining or redefining macros in compiler-intel.h or compiler-clang.h, let's separate out the compiler specific macro definitions into mutually exclusive headers, do more proper compiler detection, and keep shared definitions in compiler_types.h. Fixes: cafa0010cd51 ("Raise the minimum required gcc version to 4.6") Reported-by: Masahiro Yamada <yamada.masahiro@socionext.com> Suggested-by: Eli Friedman <efriedma@codeaurora.org> Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge tag 'linux-watchdog-4.19-rc1' of ↵Linus Torvalds2018-08-189-64/+312
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - add MEN 16z069 IP-Core driver - renesas-wdt: add support for the R8A77990 wdt - stm32_iwdg: Add stm32mp1 support and pclk feature - sp805_wdt, orion_wdt, sprd_wdt: several improvements - imx2_wdt, stmp3xxx: switch to SPDX identifier * tag 'linux-watchdog-4.19-rc1' of git://www.linux-watchdog.org/linux-watchdog: watchdog: fix dependencies of menz69_wdt.o watchdog: sp805: Add clock-frequency property watchdog: add driver for the MEN 16z069 IP-Core watchdog: sprd_wdt: Remove redundant dev_err call in sprd_wdt_probe() watchdog: stmp3xxx: Switch to SPDX identifier watchdog: imx2_wdt: Switch to SPDX identifier watchdog: sp805: set WDOG_HW_RUNNING when appropriate watchdog: sp805: add 'timeout-sec' DT property support dt-bindings: watchdog: Add optional 'timeout-sec' property for sp805 dt-bindings: watchdog: Consolidate SP805 binding docs watchdog: orion_wdt: Mark watchdog as active when running at probe watchdog: stm32: add pclk feature for stm32mp1 dt-bindings: watchdog: add stm32mp1 support dt-bindings: watchdog: renesas-wdt: Add support for the R8A77990 wdt
| * watchdog: fix dependencies of menz69_wdt.oJohannes Thumshirn2018-08-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | Currently menz69_wdt.ko has a dependency on MCB or COMPILE_TEST. But it actually needs symbols exported by MCB so the || COMPILE_TEST is wrong. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
| * watchdog: sp805: Add clock-frequency propertySrinath Mannam2018-08-061-10/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use clock-frequency property given in _DSD object of ACPI device to calculate Watchdog rate as binding clock devices are not available as device tree. Note: There is no formal review process for _DSD properties Signed-off-by: Srinath Mannam <srinath.mannam@broadcom.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
| * watchdog: add driver for the MEN 16z069 IP-CoreJohannes Thumshirn2018-08-023-0/+181
| | | | | | | | | | | | | | | | | | | | Add a driver for the MEN 16z069 Watchdog and Reset Controller IP-Core. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Michael Moese <mmoese@suse.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@linux-watchdog.org>
| * watchdog: sprd_wdt: Remove redundant dev_err call in sprd_wdt_probe()Wei Yongjun2018-08-021-3/+1
| | | | | | | | | | | | | | | | | | | | | | There is a error message within devm_ioremap_resource already, so remove the dev_err call to avoid redundant error message. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.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@linux-watchdog.org>
| * watchdog: stmp3xxx: Switch to SPDX identifierFabio Estevam2018-08-021-4/+1
| | | | | | | | | | | | | | | | | | | | Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.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@linux-watchdog.org>
| * watchdog: imx2_wdt: Switch to SPDX identifierFabio Estevam2018-08-021-4/+1
| | | | | | | | | | | | | | | | | | | | Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.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@linux-watchdog.org>
| * watchdog: sp805: set WDOG_HW_RUNNING when appropriateRay Jui2018-08-021-0/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the watchdog hardware is already enabled during the boot process, when the Linux watchdog driver loads, it should reset the watchdog and tell the watchdog framework. As a result, ping can be generated from the watchdog framework, until the userspace watchdog daemon takes over control Signed-off-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Vladimir Olovyannikov <vladimir.olovyannikov@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.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@linux-watchdog.org>
| * watchdog: sp805: add 'timeout-sec' DT property supportRay Jui2018-08-021-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | Add support for optional devicetree property 'timeout-sec'. 'timeout-sec' is used in the driver if specified in devicetree. Otherwise, fall back to driver default, i.e., 60 seconds Signed-off-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.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@linux-watchdog.org>
| * watchdog: orion_wdt: Mark watchdog as active when running at probeMaxim Kochetkov2018-08-021-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | If the watchdog is fully enabled and running at probe, mark it as such so the watchdog core can handle it until the watchdog device is opened. Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru> Reviewed-by: Guenter Roeck <linux@roeck-us.net> [groeck: Updated subject and description] Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
| * watchdog: stm32: add pclk feature for stm32mp1Ludovic Barre2018-08-021-42/+74
| | | | | | | | | | | | | | | | | | | | | | This patch adds compatible data to manage pclk clock by compatible. Adds stm32mp1 support which requires pclk clock. Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Acked-by: Alexandre TORGUE <alexandre.torgue@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@linux-watchdog.org>
* | headers: separate linux/mod_devicetable.h from linux/platform_device.hRandy Dunlap2018-07-078-0/+8
|/ | | | | | | | | | | | | | | | | | | | | | | | At over 4000 #includes, <linux/platform_device.h> is the 9th most #included header file in the Linux kernel. It does not need <linux/mod_devicetable.h>, so drop that header and explicitly add <linux/mod_devicetable.h> to source files that need it. 4146 #include <linux/platform_device.h> After this patch, there are 225 files that use <linux/mod_devicetable.h>, for a reduction of around 3900 times that <linux/mod_devicetable.h> does not have to be read & parsed. 225 #include <linux/mod_devicetable.h> This patch was build-tested on 20 different arch-es. It also makes these drivers SubmitChecklist#1 compliant. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: kbuild test robot <lkp@intel.com> # drivers/media/platform/vimc/ Reported-by: kbuild test robot <lkp@intel.com> # drivers/pinctrl/pinctrl-u300.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'mips_4.18' of ↵Linus Torvalds2018-06-121-26/+16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux Pull MIPS updates from James Hogan: "These are the main MIPS changes for 4.18. Rough overview: - MAINTAINERS: Add Paul Burton as MIPS co-maintainer - Misc: Generic compiler intrinsics, Y2038 improvements, Perf+MT fixes - Platform support: Netgear WNR1000 V3, Microsemi Ocelot integrated switch, Ingenic watchdog cleanups More detailed summary: Maintainers: - Add Paul Burton as MIPS co-maintainer, as I soon won't have access to much MIPS hardware, nor enough time to properly maintain MIPS on my own. Miscellaneous: - Use generic GCC library routines from lib/ - Add notrace to generic ucmpdi2 implementation - Rename compiler intrinsic selects to GENERIC_LIB_* - vmlinuz: Use generic ashldi3 - y2038: Convert update/read_persistent_clock() to *_clock64() - sni: Remove read_persistent_clock() - perf: Fix perf with MT counting other threads - Probe for per-TC perf counters in cpu-probe.c - Use correct VPE ID for VPE tracing Minor cleanups: - Avoid unneeded built-in.a in DTS dirs - sc-debugfs: Re-use kstrtobool_from_user - memset.S: Reinstate delay slot indentation - VPE: Fix spelling "uneeded" -> "Unneeded" Platform support: BCM47xx: - Add support for Netgear WNR1000 V3 - firmware: Support small NVRAM partitions - Use __initdata for LEDs platform data Ingenic: - Watchdog driver & platform code improvements: - Disable clock after stopping counter - Use devm_* functions - Drop module remove function - Move platform reset code to restart handler in driver - JZ4740: Convert watchdog instantiation to DT - JZ4780: Fix watchdog DT node - qi_lb60_defconfig: Enable watchdog driver Microsemi: - Ocelot: Add support for integrated switch - pcb123: Connect phys to ports" * tag 'mips_4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (30 commits) MAINTAINERS: Add Paul Burton as MIPS co-maintainer MIPS: ptrace: Make FPU context layout comments match reality MIPS: memset.S: Reinstate delay slot indentation MIPS: perf: Fix perf with MT counting other threads MIPS: perf: Use correct VPE ID when setting up VPE tracing MIPS: perf: More robustly probe for the presence of per-tc counters MIPS: Probe for MIPS MT perf counters per TC MIPS: mscc: Connect phys to ports on ocelot_pcb123 MIPS: mscc: Add switch to ocelot MIPS: JZ4740: Drop old platform reset code MIPS: qi_lb60: Enable the jz4740-wdt driver MIPS: JZ4780: dts: Fix watchdog node MIPS: JZ4740: dts: Add bindings for the jz4740-wdt driver watchdog: JZ4740: Drop module remove function watchdog: JZ4740: Register a restart handler watchdog: JZ4740: Use devm_* functions watchdog: JZ4740: Disable clock after stopping counter MIPS: VPE: Fix spelling mistake: "uneeded" -> "unneeded" MIPS: Re-use kstrtobool_from_user() MIPS: Convert update_persistent_clock() to update_persistent_clock64() ...
| * watchdog: JZ4740: Drop module remove functionPaul Cercueil2018-05-141-8/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the watchdog was configured for nowayout, and after the userspace watchdog daemon closed the dev node without sending the magic character, unloading this module stopped the watchdog hardware, which was clearly a problem. Besides, unloading the module is not possible when the userspace watchdog daemon is running, so it's safe to assume that we don't need to stop the watchdog hardware in the jz4740_wdt_remove() function. For this reason, the jz4740_wdt_remove() function can then be dropped alltogether. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: Mathieu Malaterre <malat@debian.org> Cc: linux-watchdog@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: James Hogan <jhogan@kernel.org>
| * watchdog: JZ4740: Register a restart handlerPaul Cercueil2018-05-141-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | The watchdog driver can restart the system by simply configuring the hardware for a timeout of 0 seconds. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: Mathieu Malaterre <malat@debian.org> Cc: linux-watchdog@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: James Hogan <jhogan@kernel.org>
| * watchdog: JZ4740: Use devm_* functionsPaul Cercueil2018-05-141-19/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | - Use devm_clk_get instead of clk_get - Use devm_watchdog_register_device instead of watchdog_register_device Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: Mathieu Malaterre <malat@debian.org> Cc: linux-watchdog@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: James Hogan <jhogan@kernel.org>
| * watchdog: JZ4740: Disable clock after stopping counterPaul Cercueil2018-05-141-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Previously, the clock was disabled first, which makes the watchdog component insensitive to register writes. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: Mathieu Malaterre <malat@debian.org> Cc: linux-watchdog@vger.kernel.org Cc: linux-mips@linux-mips.org Signed-off-by: James Hogan <jhogan@kernel.org>
* | watchdog: da9063: remove duplicated timeout_to_sel callsMarco Felsch2018-06-071-13/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | Every time da9063_wdt_update_timeout() gets called a timeout_to_sel() is made because the timeout argument of update_timeout() is the raw register value. Moving the second<->raw-value translation into da9063_wdt_update_timeout() removes duplicated code. Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Acked-by: Steve Twiss <stwiss.opensource@diasemi.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@linux-watchdog.org>
* | watchdog: da9063: rename helper function to avoid misunderstandingsMarco Felsch2018-06-071-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | _da9063_wdt_set_timeout() is called by da9063_wdg_set_timeout(), da9063_wdg_start() and da9063_wdg_probe() but the name expect only to be called by da9063_wdg_set_timeout(). Rename the function to avoid misunderstandings. Signed-off-by: Marco Felsch <m.felsch@pengutronix.de> Acked-by: Steve Twiss <stwiss.opensource@diasemi.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@linux-watchdog.org>
* | watchdog: da9062: remove unused codeMichael Grzeschik2018-06-061-10/+0
| | | | | | | | | | | | | | | | | | | | | | The patch "watchdog: da9062: use protection delay mechanism from core" (fb484262) removed the only user of j_time_stamp. This turned into some leftover functions that are removed with this patch. Signed-off-by: Michael Grzeschik <m.grzeschik@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@linux-watchdog.org>
* | watchdog: da9063: Fix timeout handling during probeMarco Felsch2018-06-061-0/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The watchdog can be enabled in previous steps (e.g. the bootloader). Set the driver default timeout value (8s) if the watchdog is already running and the HW_RUNNING flag. So the watchdog core framework will ping the watchdog till the user space activates the watchdog explicit with the desired timeout value. Fixes: 5e9c16e37608 ("watchdog: Add DA9063 PMIC watchdog driver.") Signed-off-by: Marco Felsch <m.felsch@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@linux-watchdog.org>
* | watchdog: da9063: Fix updating timeout valueMarco Felsch2018-06-061-2/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DA9063 watchdog has only one register field to store the timeout value and to enable the watchdog. The watchdog gets enabled if the value is not zero. There is no issue if the watchdog is already running but it leads into problems if the watchdog is disabled. If the watchdog is disabled and only the timeout value should be prepared the watchdog gets enabled too. Add a check to get the current watchdog state and update the watchdog timeout value on hw-side only if the watchdog is already active. Fixes: 5e9c16e37608 ("watchdog: Add DA9063 PMIC watchdog driver.") Signed-off-by: Marco Felsch <m.felsch@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@linux-watchdog.org>
* | watchdog: da9063: Fix setting/changing timeoutMarco Felsch2018-06-061-2/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the timeout value is set more than once the DA9063 watchdog triggers a reset signal which reset the system. To update the timeout value we have to disable the watchdog, clear the watchdog counter value and write the new timeout value to the watchdog. Clearing the counter value is a feature to be on the safe side because the data sheet doesn't describe the behaviour of the watchdog counter value after a watchdog disabling-enable-sequence. The patch is based on Philipp Zabel's previous patch. Fixes: 5e9c16e37608 ("watchdog: Add DA9063 PMIC watchdog driver.") Signed-off-by: Marco Felsch <m.felsch@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@linux-watchdog.org>
* | watchdog: mena21_wdt: Drop unnecessary mutex lockJia-Ju Bai2018-05-211-18/+0
| | | | | | | | | | | | | | | | | | | | | | | | There is already a mutex in the watchdog core which serializes calls to the various API functions. So the mutex lock "drv->lock" is unnecessary and can be dropped. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Reviewed-by: Johannes Thumshirn <jth@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
* | watchdog: hpwdt: Claim NMIs generated by iLO5Jerry Hoemann2018-05-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On iLO5 going forward we want to return and not claim the NMI, if the NMI was NOT gnerated by the iLO as a result of the watchdog timing out or an explicit generate NMI. The sense of the test in is inverted and prevents hpwdt_pretimeout from claiming NMIs when it should. Signed-off-by: Jerry Hoemann <jerry.hoemann@hpe.com> Fixes: a042229a18ac ("watchdog: hpwdt: Update nmi_panic message.") 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>
* | watchdog: sp805: add restart handlerJongsung Kim2018-05-211-0/+14
| | | | | | | | | | | | | | | | | | | | Add restart handler for SP805 watchdog so that the driver can be used to reboot the system. Signed-off-by: Jongsung Kim <neidhard.kim@lge.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>
* | watchdog: renesas-wdt: Remove R-Car M2-W ES2.x from blacklistGeert Uytterhoeven2018-05-211-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | System restart triggered by watchdog time-out works fine on a Koelsch board with R-Car M2-W ES2.0. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* | watchdog: simplify getting .drvdataWolfram Sang2018-05-213-12/+6
|/ | | | | | | | | | | We should get drvdata from struct device directly. Going via platform_device is an unneeded step back and forth. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Michal Simek <michal.simek@xilinx.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>
* aspeed: watchdog: Set bootstatus during probeEddie James2018-04-161-0/+7
| | | | | | | | | | | Check the aspeed timeout status register to see if the system has booted from the secondary boot source. If so, set the watchdog device bootstatus flag for "Card previously reset the CPU." Signed-off-by: Eddie James <eajames@linux.vnet.ibm.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>
* watchdog: renesas-wdt: Add support for WDIOF_CARDRESETVeeraiyan Chidambaram2018-04-161-2/+4
| | | | | | | | | | | | | | | | | | | This patch adds the WDIOF_CARDRESET support for the Renesas platform watchdog, to know if the board reboot is due to a watchdog reset. This is done via the WOVF bit (bit 4) of the RWTCSRA register, which indicates if RWTCNT overflowed, triggering the reset in last boot. Signed-off-by: Veeraiyan Chidambaram <veeraiyan.chidambaram@in.bosch.com> [takeshi.kihara.df: changed to read the RWTCSRA register while clock is enabled] Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Vladimir Zapolskiy <vz@mleia.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
* watchdog: wafer5823wdt: Mark expected switch fall-throughGustavo A. R. Silva2018-04-161-1/+1
| | | | | | | | | | | | | In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in this particular case I replaced "Fall" with a proper "Fall through" comment, which is what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.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>
* watchdog: w83977f_wdt: Mark expected switch fall-throughGustavo A. R. Silva2018-04-161-1/+1
| | | | | | | | | | | | | In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in this particular case I replaced "Fall" with a proper "Fall through" comment, which is what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.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>
* watchdog: sch311x_wdt: Mark expected switch fall-throughGustavo A. R. Silva2018-04-161-1/+1
| | | | | | | | | | | | | In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in this particular case I replaced "Fall" with a proper "Fall through" comment, which is what GCC is expecting to find. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.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>
* Merge tag 'linux-watchdog-4.17-rc1' of ↵Linus Torvalds2018-04-1349-456/+582
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://www.linux-watchdog.org/linux-watchdog Pull watchdog updates from Wim Van Sebroeck: - Add Nuvoton NPCM watchdog driver - renesas_wdt: Add R-Car Gen2 support - renesas_wdt: add suspend/resume and restart handler support - hpwdt: convert to watchdog core and improve NMI - improve timeout setting/handling in various drivers - coh901327: make license text and module licence match - fix error handling in asm9260_wdt, sprd_wdt and davinci_wdt - aspeed imrovements - dw improvements (for control register & suspend/resume) - add SPDX identifiers for watchdog subsystem * tag 'linux-watchdog-4.17-rc1' of git://www.linux-watchdog.org/linux-watchdog: (35 commits) watchdog: davinci_wdt: fix error handling in davinci_wdt_probe() watchdog: add SPDX identifiers for watchdog subsystem watchdog: aspeed: Allow configuring for alternate boot watchdog: Add Nuvoton NPCM watchdog driver dt-bindings: watchdog: Add Nuvoton NPCM description watchdog: dw: save/restore control and timeout across suspend/resume watchdog: dw: RMW the control register watchdog: sprd_wdt: Fix error handling in sprd_wdt_enable() watchdog: aspeed: Fix translation of reset mode to ctrl register watchdog: renesas_wdt: Add restart handler watchdog: renesas_wdt: Add R-Car Gen2 support watchdog: renesas_wdt: Add suspend/resume support watchdog: f71808e_wdt: Fix WD_EN register read watchdog: hpwdt: Update driver version. watchdog: hpwdt: Add dynamic debug watchdog: hpwdt: Programable Pretimeout NMI watchdog: hpwdt: remove allow_kdump module parameter. watchdog: hpwdt: condition early return of NMI handler on iLO5 watchdog: hpwdt: Modify to use watchdog core. watchdog: hpwdt: Update nmi_panic message. ...
| * Merge branch 'v4.17-rc1'Wim Van Sebroeck2018-03-261-4/+11
| |\
| | * watchdog: davinci_wdt: fix error handling in davinci_wdt_probe()Alexey Khoroshilov2018-03-261-4/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | clk_disable_unprepare() was added to one error path, but there is another one. The patch makes sure clk is disabled at the both of them. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> 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>
| * | Merge branch 'v4.17-rc1'Wim Van Sebroeck2018-03-2432-210/+301
| |\|
| | * watchdog: add SPDX identifiers for watchdog subsystemMarcus Folkesson2018-03-2428-210/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add SPDX identifier - Remove boiler plate license text - If MODULE_LICENSE and boiler plate does not match, go for boiler plate license Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Acked-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Acked-by: Baruch Siach <baruch@tkos.co.il> Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com> Acked-by: Keiji Hayashibara <hayashibara.keiji@socionext.com> Acked-by: Johannes Thumshirn <jth@kernel.org> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Acked-by: Mans Rullgard <mans@mansr.com> Acked-by: Matthias Brugger <matthias.bgg@gmail.com> Acked-by: Michal Simek <michal.simek@xilinx.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Tomas Winkler <tomas.winkler@intel.com> Acked-by: Patrice Chotard <patrice.chotard@st.com> Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> Reviewed-by: Eric Anholt <eric@anholt.net> 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>
| | * watchdog: aspeed: Allow configuring for alternate bootMilton Miller2018-03-241-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow the device tree to specify a watchdog to fallover to the alternate boot source. The aspeeed watchdog can set a latch directing flash chip select 0 to chip select 1, allowing boot from an alternate media if the watchdog is not reset in time. On the ast2400 bank 1 also goes to flash bank 1, while on the ast2500 the chip selects are swapped. Also clear the secondary boot bit during the machine restart operation. Otherwise, the system will switch to the alternate boot after every reboot, which is not desired. Signed-off-by: Milton Miller <miltonm@us.ibm.com> Signed-off-by: Eddie James <eajames@linux.vnet.ibm.com> Reviewed-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| | * watchdog: Add Nuvoton NPCM watchdog driverJoel Stanley2018-03-243-0/+266
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Nuvoton NPCM750 has a watchdog implemented as a single register inside the timer peripheral. This driver exposes that watchdog as a standard watchdog device with coarse timeout intervals, limited by the combination of prescaler and counter that is provided by the hardware. The calculation is taken from the Nuvoton vendor tree. The watchdog is left running if a bootloader had it going. The rate is the one specified in the device tree, or the default value (obtained from the datasheet). There is a pre-timeout IRQ that is wired up. This timeout always occurs 1024 clocks before the timeout. Signed-off-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | Merge branch 'v4.16-fixes'Wim Van Sebroeck2018-03-133-12/+33
| |\ \
| | * | watchdog: dw: save/restore control and timeout across suspend/resumeBrian Norris2018-03-131-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some platforms lose this state in suspend. It should be safe to do this unconditionally. Signed-off-by: Brian Norris <briannorris@chromium.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>
| | * | watchdog: dw: RMW the control registerBrian Norris2018-03-131-8/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RK3399 has rst_pulse_length in CONTROL_REG[4:2], determining the length of pulse to issue for system reset. We shouldn't clobber this value, because that might make the system reset ineffective. On RK3399, we're seeing that a value of 000b (meaning 2 cycles) yields an unreliable (partial?) reset, and so we only fully reset after the watchdog fires a second time. If we retain the system default (010b, or 8 clock cycles), then the watchdog reset is much more reliable. Read-modify-write retains the system value and improves reset reliability. It seems we were intentionally clobbering the response mode previously, to ensure we performed a system reset (we don't support an interrupt notification), so retain that explicitly. Signed-off-by: Brian Norris <briannorris@chromium.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>
| | * | watchdog: sprd_wdt: Fix error handling in sprd_wdt_enable()Alexey Khoroshilov2018-03-131-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If clk_prepare_enable(wdt->rtc_enable) fails, wdt->enable clock is left enabled. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> 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>
| | * | watchdog: aspeed: Fix translation of reset mode to ctrl registerMilton Miller2018-03-131-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Assert RESET_SYSTEM bit for any reset and set MODE field from reset type. The watchdog control register has a RESET_SYSTEM bit that is really closer to activate a reset, and RESET_SYSTEM_MODE field that chooses how much to reset. Before this patch, a node without these optional property would do a SOC reset, but a node with properties requesting a cpu or SOC reset would do nothing and a node requesting a system reset would do a SOC reset. Fixes: b7f0b8ad25f3 ("drivers/watchdog: ASPEED reference dev tree properties for config") Signed-off-by: Milton Miller <miltonm@us.ibm.com> Signed-off-by: Eddie James <eajames@linux.vnet.ibm.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>
| * | | Merge branch 'v4.16-fixes'Wim Van Sebroeck2018-03-101-1/+1
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| | * watchdog: f71808e_wdt: Fix WD_EN register readIgor Pylypiv2018-03-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | F71808FG_FLAG_WD_EN defines bit position, not a bitmask Signed-off-by: Igor Pylypiv <igor.pylypiv@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> Cc: stable <stable@vger.kernel.org>
| * | watchdog: renesas_wdt: Add restart handlerFabrizio Castro2018-03-101-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On iWave's boards iwg20d and iwg22d the only way to reboot the system is by means of the watchdog. This patch adds a restart handler to rwdt_ops, and also makes sure we keep its priority to the lowest level, in order to not override other more effective handlers. Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
| * | watchdog: renesas_wdt: Add R-Car Gen2 supportFabrizio Castro2018-03-101-5/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Due to commits: * "ARM: shmobile: Add watchdog support", * "ARM: shmobile: rcar-gen2: Add watchdog support", and * "soc: renesas: rcar-rst: Enable watchdog as reset trigger for Gen2", we now have everything we needed for the watchdog to work on Gen2 and RZ/G1. However, on early revisions of some R-Car Gen2 SoCs, and depending on SMP configuration, the system may fail to restart on watchdog time-out, and lock up instead. Specifically: - On R-Car H2 ES1.0 and M2-W ES1.0, watchdog restart fails unless only the first CPU core is in use (using e.g. the "maxcpus=1" kernel commandline option). - On R-Car V2H ES1.1, watchdog restart fails unless SMP is disabled completely (using CONFIG_SMP=n during build configuration, or using the "nosmp" or "maxcpus=0" kernel commandline options). This commit adds "renesas,rcar-gen2-wdt" as compatible string for R-Car Gen2 and RZ/G1, but also prevents the system from using the watchdog driver in cases where the system would fail to restart by blacklisting the affected SoCs, using the minimum known working revisions (ES2.0 on R-Car H2, and ES3.0 on M2-W), and taking the actual SMP software configuration into account. Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com> Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com> [Geert: blacklisting logic] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.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>
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