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2018-08-18Merge tag 'linux-watchdog-4.19-rc1' of ↵Linus Torvalds
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
2018-08-06watchdog: fix dependencies of menz69_wdt.oJohannes Thumshirn
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>
2018-08-06watchdog: sp805: Add clock-frequency propertySrinath Mannam
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>
2018-08-02watchdog: add driver for the MEN 16z069 IP-CoreJohannes Thumshirn
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>
2018-08-02watchdog: sprd_wdt: Remove redundant dev_err call in sprd_wdt_probe()Wei Yongjun
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>
2018-08-02watchdog: stmp3xxx: Switch to SPDX identifierFabio Estevam
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>
2018-08-02watchdog: imx2_wdt: Switch to SPDX identifierFabio Estevam
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>
2018-08-02watchdog: sp805: set WDOG_HW_RUNNING when appropriateRay Jui
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>
2018-08-02watchdog: sp805: add 'timeout-sec' DT property supportRay Jui
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>
2018-08-02watchdog: orion_wdt: Mark watchdog as active when running at probeMaxim Kochetkov
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>
2018-08-02watchdog: stm32: add pclk feature for stm32mp1Ludovic Barre
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>
2018-07-07headers: separate linux/mod_devicetable.h from linux/platform_device.hRandy Dunlap
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>
2018-06-12Merge tag 'mips_4.18' of ↵Linus Torvalds
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() ...
2018-06-07watchdog: da9063: remove duplicated timeout_to_sel callsMarco Felsch
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>
2018-06-07watchdog: da9063: rename helper function to avoid misunderstandingsMarco Felsch
_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>
2018-06-06watchdog: da9062: remove unused codeMichael Grzeschik
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>
2018-06-06watchdog: da9063: Fix timeout handling during probeMarco Felsch
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>
2018-06-06watchdog: da9063: Fix updating timeout valueMarco Felsch
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>
2018-06-06watchdog: da9063: Fix setting/changing timeoutMarco Felsch
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>
2018-05-21watchdog: mena21_wdt: Drop unnecessary mutex lockJia-Ju Bai
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>
2018-05-21watchdog: hpwdt: Claim NMIs generated by iLO5Jerry Hoemann
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>
2018-05-21watchdog: sp805: add restart handlerJongsung Kim
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>
2018-05-21watchdog: renesas-wdt: Remove R-Car M2-W ES2.x from blacklistGeert Uytterhoeven
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>
2018-05-21watchdog: simplify getting .drvdataWolfram Sang
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>
2018-05-14watchdog: JZ4740: Drop module remove functionPaul Cercueil
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>
2018-05-14watchdog: JZ4740: Register a restart handlerPaul Cercueil
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>
2018-05-14watchdog: JZ4740: Use devm_* functionsPaul Cercueil
- 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>
2018-05-14watchdog: JZ4740: Disable clock after stopping counterPaul Cercueil
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>
2018-04-16aspeed: watchdog: Set bootstatus during probeEddie James
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>
2018-04-16watchdog: renesas-wdt: Add support for WDIOF_CARDRESETVeeraiyan Chidambaram
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>
2018-04-16watchdog: wafer5823wdt: Mark expected switch fall-throughGustavo A. R. Silva
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>
2018-04-16watchdog: w83977f_wdt: Mark expected switch fall-throughGustavo A. R. Silva
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>
2018-04-16watchdog: sch311x_wdt: Mark expected switch fall-throughGustavo A. R. Silva
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>
2018-04-13Merge tag 'linux-watchdog-4.17-rc1' of ↵Linus Torvalds
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. ...
2018-04-05Merge tag 'gpio-v4.17-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "This is the bulk of GPIO changes for the v4.17 kernel cycle: New drivers: - Nintendo Wii GameCube GPIO, known as "Hollywood" - Raspberry Pi mailbox service GPIO expander - Spreadtrum main SC9860 SoC and IEC GPIO controllers. Improvements: - Implemented .get_multiple() callback for most of the high-performance industrial GPIO cards for the ISA bus. - ISA GPIO drivers now select the ISA_BUS_API instead of depending on it. This is merged with the same pattern for all the ISA drivers and some other Kconfig cleanups related to this. Cleanup: - Delete the TZ1090 GPIO drivers following the deletion of this SoC from the ARM tree. - Move the documentation over to driver-api to conform with the rest of the kernel documentation build. - Continue to make the GPIO drivers include only <linux/gpio/driver.h> and not the too broad <linux/gpio.h> that we want to get rid of. - Managed to remove VLA allocation from two drivers pending more fixes in this area for the next merge window. - Misc janitorial fixes" * tag 'gpio-v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (77 commits) gpio: Add Spreadtrum PMIC EIC driver support gpio: Add Spreadtrum EIC driver support dt-bindings: gpio: Add Spreadtrum EIC controller documentation gpio: ath79: Fix potential NULL dereference in ath79_gpio_probe() pinctrl: qcom: Don't allow protected pins to be requested gpiolib: Support 'gpio-reserved-ranges' property gpiolib: Change bitmap allocation to kmalloc_array gpiolib: Extract mask allocation into subroutine dt-bindings: gpio: Add a gpio-reserved-ranges property gpio: mockup: fix a potential crash when creating debugfs entries gpio: pca953x: add compatibility for pcal6524 and pcal9555a gpio: dwapb: Add support for a bus clock gpio: Remove VLA from xra1403 driver gpio: Remove VLA from MAX3191X driver gpio: ws16c48: Implement get_multiple callback gpio: gpio-mm: Implement get_multiple callback gpio: 104-idi-48: Implement get_multiple callback gpio: 104-dio-48e: Implement get_multiple callback gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks gpio: pci-idio-16: Implement get_multiple callback ...
2018-04-02Merge tag 'arch-removal' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pul removal of obsolete architecture ports from Arnd Bergmann: "This removes the entire architecture code for blackfin, cris, frv, m32r, metag, mn10300, score, and tile, including the associated device drivers. I have been working with the (former) maintainers for each one to ensure that my interpretation was right and the code is definitely unused in mainline kernels. Many had fond memories of working on the respective ports to start with and getting them included in upstream, but also saw no point in keeping the port alive without any users. In the end, it seems that while the eight architectures are extremely different, they all suffered the same fate: There was one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem, which was more costly than licensing newer off-the-shelf CPU cores from a third party (typically ARM, MIPS, or RISC-V). It seems that all the SoC product lines are still around, but have not used the custom CPU architectures for several years at this point. In contrast, CPU instruction sets that remain popular and have actively maintained kernel ports tend to all be used across multiple licensees. [ See the new nds32 port merged in the previous commit for the next generation of "one company in charge of an SoC line, a CPU microarchitecture and a software ecosystem" - Linus ] The removal came out of a discussion that is now documented at https://lwn.net/Articles/748074/. Unlike the original plans, I'm not marking any ports as deprecated but remove them all at once after I made sure that they are all unused. Some architectures (notably tile, mn10300, and blackfin) are still being shipped in products with old kernels, but those products will never be updated to newer kernel releases. After this series, we still have a few architectures without mainline gcc support: - unicore32 and hexagon both have very outdated gcc releases, but the maintainers promised to work on providing something newer. At least in case of hexagon, this will only be llvm, not gcc. - openrisc, risc-v and nds32 are still in the process of finishing their support or getting it added to mainline gcc in the first place. They all have patched gcc-7.3 ports that work to some degree, but complete upstream support won't happen before gcc-8.1. Csky posted their first kernel patch set last week, their situation will be similar [ Palmer Dabbelt points out that RISC-V support is in mainline gcc since gcc-7, although gcc-7.3.0 is the recommended minimum - Linus ]" This really says it all: 2498 files changed, 95 insertions(+), 467668 deletions(-) * tag 'arch-removal' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: (74 commits) MAINTAINERS: UNICORE32: Change email account staging: iio: remove iio-trig-bfin-timer driver tty: hvc: remove tile driver tty: remove bfin_jtag_comm and hvc_bfin_jtag drivers serial: remove tile uart driver serial: remove m32r_sio driver serial: remove blackfin drivers serial: remove cris/etrax uart drivers usb: Remove Blackfin references in USB support usb: isp1362: remove blackfin arch glue usb: musb: remove blackfin port usb: host: remove tilegx platform glue pwm: remove pwm-bfin driver i2c: remove bfin-twi driver spi: remove blackfin related host drivers watchdog: remove bfin_wdt driver can: remove bfin_can driver mmc: remove bfin_sdh driver input: misc: remove blackfin rotary driver input: keyboard: remove bf54x driver ...
2018-03-26Merge branch 'v4.17-rc1'Wim Van Sebroeck
2018-03-26watchdog: davinci_wdt: fix error handling in davinci_wdt_probe()Alexey Khoroshilov
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>
2018-03-26watchdog: remove bfin_wdt driverArnd Bergmann
The blackfin architecture is getting removed, so this driver has become obsolete. Acked-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Aaron Wu <aaron.wu@analog.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26treewide: simplify Kconfig dependencies for removed archsArnd Bergmann
A lot of Kconfig symbols have architecture specific dependencies. In those cases that depend on architectures we have already removed, they can be omitted. Acked-by: Kalle Valo <kvalo@codeaurora.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-24Merge branch 'v4.17-rc1'Wim Van Sebroeck
2018-03-24watchdog: add SPDX identifiers for watchdog subsystemMarcus Folkesson
- 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>
2018-03-24watchdog: aspeed: Allow configuring for alternate bootMilton Miller
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>
2018-03-24watchdog: Add Nuvoton NPCM watchdog driverJoel Stanley
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>
2018-03-19ACPI / watchdog: Fix off-by-one error at resource assignmentTakashi Iwai
The resource allocation in WDAT watchdog has off-one-by error, it sets one byte more than the actual end address. This may eventually lead to unexpected resource conflicts. Fixes: 058dfc767008 (ACPI / watchdog: Add support for WDAT hardware watchdog) Cc: 4.9+ <stable@vger.kernel.org> # 4.9+ Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2018-03-18Merge tag 'v4.16-rc5' into develLinus Walleij
Linux 4.16-rc5 merged into the GPIO devel branch to resolve a nasty conflict between fixes and devel in the RCAR driver. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-03-13Merge branch 'v4.16-fixes'Wim Van Sebroeck
2018-03-13watchdog: dw: save/restore control and timeout across suspend/resumeBrian Norris
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>
2018-03-13watchdog: dw: RMW the control registerBrian Norris
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>
2018-03-13watchdog: sprd_wdt: Fix error handling in sprd_wdt_enable()Alexey Khoroshilov
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>
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