Merge tag 'linux-watchdog-6.6-rc1' of git://www.linux-watchdog.org/linux-watchdog

Pull watchdog updates from Wim Van Sebroeck:

 - add marvell GTI watchdog driver

 - add support for Amlogic-T7 SoCs

 - document the IPQ5018 watchdog compatible

 - enable COMPILE_TEST for more watchdog device drivers

 - core: stop watchdog when executing poweroff command

 - other small improvements and fixes

* tag 'linux-watchdog-6.6-rc1' of git://www.linux-watchdog.org/linux-watchdog: (21 commits)
  watchdog: Add support for Amlogic-T7 SoCs
  watchdog: Add a new struct for Amlogic-GXBB driver
  dt-bindings: watchdog: Add support for Amlogic-T7 SoCs
  dt-bindings: watchdog: qcom-wdt: document IPQ5018
  watchdog: imx2_wdt: Improve dev_crit() message
  watchdog: stm32: Drop unnecessary of_match_ptr()
  watchdog: sama5d4: readout initial state
  watchdog: intel-mid_wdt: add MODULE_ALIAS() to allow auto-load
  watchdog: core: stop watchdog when executing poweroff command
  watchdog: pm8916_wdt: Remove redundant of_match_ptr()
  watchdog: xilinx_wwdt: Use div_u64() in xilinx_wwdt_start()
  watchdog: starfive: Remove #ifdef guards for PM related functions
  watchdog: s3c2410: Fix potential deadlock on &wdt->lock
  watchdog:rit_wdt: Add support for WDIOF_CARDRESET
  dt-bindings: watchdog: ti,rti-wdt: Add support for WDIOF_CARDRESET
  watchdog: Enable COMPILE_TEST for more drivers
  watchdog: advantech_ec_wdt: fix Kconfig dependencies
  watchdog: Explicitly include correct DT includes
  Watchdog: Add marvell GTI watchdog driver
  dt-bindings: watchdog: marvell GTI system watchdog driver
  ...

Documentation/devicetree/bindings/watchdog/amlogic,meson-gxbb-wdt.yaml

@@ -17,6 +17,7 @@ properties:
   compatible:
     enum:
       - amlogic,meson-gxbb-wdt
+      - amlogic,t7-wdt
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/watchdog/marvell,cn10624-wdt.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/watchdog/marvell,cn10624-wdt.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell Global Timer (GTI) system watchdog
+
+maintainers:
+  - Bharat Bhushan <bbhushan2@marvell.com>
+
+allOf:
+  - $ref: watchdog.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - marvell,cn9670-wdt
+          - marvell,cn10624-wdt
+
+      - items:
+          - enum:
+              - marvell,cn9880-wdt
+              - marvell,cnf9535-wdt
+          - const: marvell,cn9670-wdt
+
+      - items:
+          - enum:
+              - marvell,cn10308-wdt
+              - marvell,cnf10518-wdt
+          - const: marvell,cn10624-wdt
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: refclk
+
+  marvell,wdt-timer-index:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 63
+    description:
+      An SoC have many timers (up to 64), firmware can reserve one or more timer
+      for some other use case and configures one of the global timer as watchdog
+      timer. Firmware will update this field with the timer number configured
+      as watchdog timer.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        watchdog@802000040000 {
+            compatible = "marvell,cn9670-wdt";
+            reg = <0x00008020 0x00040000 0x00000000 0x00020000>;
+            interrupts = <GIC_SPI 38 IRQ_TYPE_EDGE_RISING>;
+            clocks = <&sclk>;
+            clock-names = "refclk";
+            marvell,wdt-timer-index = <63>;
+        };
+    };
+
+...

Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml

@@ -18,6 +18,7 @@ properties:
       - items:
           - enum:
               - qcom,kpss-wdt-ipq4019
+              - qcom,apss-wdt-ipq5018
               - qcom,apss-wdt-ipq5332
               - qcom,apss-wdt-ipq9574
               - qcom,apss-wdt-msm8994

Documentation/devicetree/bindings/watchdog/ti,rti-wdt.yaml

@@ -34,6 +34,20 @@ properties:
   power-domains:
     maxItems: 1
 
+  memory-region:
+    maxItems: 1
+    description:
+      Contains the watchdog reserved memory. It is optional.
+      In the reserved memory, the specified values, which are
+      PON_REASON_SOF_NUM(0xBBBBCCCC), PON_REASON_MAGIC_NUM(0xDDDDDDDD),
+      and PON_REASON_EOF_NUM(0xCCCCBBBB), are pre-stored at the first
+      3 * 4 bytes to tell that last boot was caused by watchdog reset.
+      Once the PON reason is captured by driver(rti_wdt.c), the driver
+      is supposed to wipe the whole memory region. Surely, if this
+      property is set, at least 12 bytes reserved memory starting from
+      specific memory address(0xa220000) should be set. More please
+      refer to example.
+
 required:
   - compatible
   - reg
@@ -47,7 +61,18 @@ examples:
     /*
      * RTI WDT in main domain on J721e SoC. Assigned clocks are used to
      * select the source clock for the watchdog, forcing it to tick with
-     * a 32kHz clock in this case.
+     * a 32kHz clock in this case. Add a reserved memory(optional) to keep
+     * the watchdog reset cause persistent, which was be written in 12 bytes
+     * starting from 0xa2200000 by RTI Watchdog Firmware, then make it
+     * possible to get watchdog reset cause in driver.
+     *
+     * Reserved memory should be defined as follows:
+     * reserved-memory {
+     *     wdt_reset_memory_region: wdt-memory@a2200000 {
+     *         reg = <0x00 0xa2200000 0x00 0x1000>;
+     *         no-map;
+     *     };
+     * }
      */
     #include <dt-bindings/soc/ti,sci_pm_domain.h>
 
@@ -58,4 +83,5 @@ examples:
         power-domains = <&k3_pds 252 TI_SCI_PD_EXCLUSIVE>;
         assigned-clocks = <&k3_clks 252 1>;
         assigned-clock-parents = <&k3_clks 252 5>;
+        memory-region = <&wdt_reset_memory_region>;
     };

drivers/watchdog/Kconfig

@@ -307,7 +307,7 @@ config XILINX_WATCHDOG
 config XILINX_WINDOW_WATCHDOG
 	tristate "Xilinx window watchdog timer"
 	depends on HAS_IOMEM
-	depends on ARM64
+	depends on ARM64 || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  Window watchdog driver for the versal_wwdt IP core.
@@ -343,7 +343,7 @@ config RAVE_SP_WATCHDOG
 
 config MLX_WDT
 	tristate "Mellanox Watchdog"
-	depends on MELLANOX_PLATFORM
+	depends on MELLANOX_PLATFORM || COMPILE_TEST
 	select WATCHDOG_CORE
 	select REGMAP
 	help
@@ -493,7 +493,7 @@ config FTWDT010_WATCHDOG
 
 config IXP4XX_WATCHDOG
 	tristate "IXP4xx Watchdog"
-	depends on ARCH_IXP4XX
+	depends on ARCH_IXP4XX || (ARM && COMPILE_TEST)
 	select WATCHDOG_CORE
 	help
 	  Say Y here if to include support for the watchdog timer
@@ -529,7 +529,7 @@ config S3C2410_WATCHDOG
 
 config SA1100_WATCHDOG
 	tristate "SA1100/PXA2xx watchdog"
-	depends on ARCH_SA1100 || ARCH_PXA
+	depends on ARCH_SA1100 || ARCH_PXA || COMPILE_TEST
 	help
 	  Watchdog timer embedded into SA11x0 and PXA2xx chips. This will
 	  reboot your system when timeout is reached.
@@ -720,7 +720,7 @@ config IMX2_WDT
 config IMX_SC_WDT
 	tristate "IMX SC Watchdog"
 	depends on HAVE_ARM_SMCCC
-	depends on IMX_SCU
+	depends on IMX_SCU || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  This is the driver for the system controller watchdog
@@ -931,7 +931,7 @@ config ASPEED_WATCHDOG
 
 config STM32_WATCHDOG
 	tristate "STM32 Independent WatchDoG (IWDG) support"
-	depends on ARCH_STM32
+	depends on ARCH_STM32 || COMPILE_TEST
 	select WATCHDOG_CORE
 	default y
 	help
@@ -1065,7 +1065,7 @@ config ACQUIRE_WDT
 
 config ADVANTECH_WDT
 	tristate "Advantech SBC Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  If you are configuring a Linux kernel for the Advantech single-board
 	  computer, say `Y' here to support its built-in watchdog timer
@@ -1074,14 +1074,16 @@ config ADVANTECH_WDT
 
 config ADVANTECH_EC_WDT
 	tristate "Advantech Embedded Controller Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
+	select ISA_BUS_API
+	select WATCHDOG_CORE
 	help
 		This driver supports Advantech products with ITE based Embedded Controller.
 		It does not support Advantech products with other ECs or without EC.
 
 config ALIM1535_WDT
 	tristate "ALi M1535 PMU Watchdog Timer"
-	depends on X86 && PCI
+	depends on (X86 || COMPILE_TEST) && PCI
 	help
 	  This is the driver for the hardware watchdog on the ALi M1535 PMU.
 
@@ -1105,7 +1107,7 @@ config ALIM7101_WDT
 
 config EBC_C384_WDT
 	tristate "WinSystems EBC-C384 Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	select ISA_BUS_API
 	select WATCHDOG_CORE
 	help
@@ -1115,7 +1117,7 @@ config EBC_C384_WDT
 
 config EXAR_WDT
 	tristate "Exar Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  Enables watchdog timer support for the watchdog timer present
@@ -1126,7 +1128,7 @@ config EXAR_WDT
 
 config F71808E_WDT
 	tristate "Fintek F718xx, F818xx Super I/O Watchdog"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  This is the driver for the hardware watchdog on the Fintek F71808E,
@@ -1138,7 +1140,7 @@ config F71808E_WDT
 
 config SP5100_TCO
 	tristate "AMD/ATI SP5100 TCO Timer/Watchdog"
-	depends on X86 && PCI
+	depends on (X86 || COMPILE_TEST) && PCI
 	select WATCHDOG_CORE
 	help
 	  Hardware watchdog driver for the AMD/ATI SP5100 chipset. The TCO
@@ -1177,7 +1179,7 @@ config SC520_WDT
 
 config SBC_FITPC2_WATCHDOG
 	tristate "Compulab SBC-FITPC2 watchdog"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the built-in watchdog timer on the fit-PC2,
 	  fit-PC2i, CM-iAM single-board computers made by Compulab.
@@ -1202,7 +1204,7 @@ config SBC_FITPC2_WATCHDOG
 
 config EUROTECH_WDT
 	tristate "Eurotech CPU-1220/1410 Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  Enable support for the watchdog timer on the Eurotech CPU-1220 and
 	  CPU-1410 cards.  These are PC/104 SBCs. Spec sheets and product
@@ -1210,7 +1212,7 @@ config EUROTECH_WDT
 
 config IB700_WDT
 	tristate "IB700 SBC Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the hardware watchdog on the IB700 Single
 	  Board Computer produced by TMC Technology (www.tmc-uk.com). This
@@ -1227,7 +1229,7 @@ config IB700_WDT
 
 config IBMASR
 	tristate "IBM Automatic Server Restart"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the IBM Automatic Server Restart watchdog
 	  timer built-in into some eServer xSeries machines.
@@ -1237,7 +1239,7 @@ config IBMASR
 
 config WAFER_WDT
 	tristate "ICP Single Board Computer Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is a driver for the hardware watchdog on the ICP Single
 	  Board Computer. This driver is working on (at least) the following
@@ -1259,7 +1261,7 @@ config I6300ESB_WDT
 
 config IE6XX_WDT
 	tristate "Intel Atom E6xx Watchdog"
-	depends on X86 && PCI
+	depends on (X86 || COMPILE_TEST) && PCI
 	select WATCHDOG_CORE
 	select MFD_CORE
 	select LPC_SCH
@@ -1319,7 +1321,7 @@ config ITCO_VENDOR_SUPPORT
 
 config IT8712F_WDT
 	tristate "IT8712F (Smart Guardian) Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the built-in watchdog timer on the IT8712F
 	  Super I/0 chipset used on many motherboards.
@@ -1332,7 +1334,7 @@ config IT8712F_WDT
 
 config IT87_WDT
 	tristate "IT87 Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  This is the driver for the hardware watchdog on the ITE IT8607,
@@ -1350,7 +1352,7 @@ config IT87_WDT
 config HP_WATCHDOG
 	tristate "HP ProLiant iLO2+ Hardware Watchdog Timer"
 	select WATCHDOG_CORE
-	depends on (ARM64 || X86) && PCI
+	depends on (ARM64 || X86 || COMPILE_TEST) && PCI
 	help
 	  A software monitoring watchdog and NMI handling driver. This driver
 	  will detect lockups and provide a stack trace. This is a driver that
@@ -1380,7 +1382,7 @@ config KEMPLD_WDT
 
 config SC1200_WDT
 	tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is a driver for National Semiconductor PC87307/PC97307 hardware
 	  watchdog cards as found on the SC1200. This watchdog is mainly used
@@ -1403,7 +1405,7 @@ config SCx200_WDT
 
 config PC87413_WDT
 	tristate "NS PC87413 watchdog"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the hardware watchdog on the PC87413 chipset
 	  This watchdog simply watches your kernel to make sure it doesn't
@@ -1417,7 +1419,7 @@ config PC87413_WDT
 
 config NV_TCO
 	tristate "nVidia TCO Timer/Watchdog"
-	depends on X86 && PCI
+	depends on (X86 || COMPILE_TEST) && PCI
 	help
 	  Hardware driver for the TCO timer built into the nVidia Hub family
 	  (such as the MCP51).  The TCO (Total Cost of Ownership) timer is a
@@ -1446,7 +1448,7 @@ config RDC321X_WDT
 
 config 60XX_WDT
 	tristate "SBC-60XX Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This driver can be used with the watchdog timer found on some
 	  single board computers, namely the 6010 PII based computer.
@@ -1486,7 +1488,7 @@ config SBC7240_WDT
 
 config CPU5_WDT
 	tristate "SMA CPU5 Watchdog"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  TBD.
 	  To compile this driver as a module, choose M here: the
@@ -1494,7 +1496,7 @@ config CPU5_WDT
 
 config SMSC_SCH311X_WDT
 	tristate "SMSC SCH311X Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the hardware watchdog timer on the
 	  SMSC SCH3112, SCH3114 and SCH3116 Super IO chipset
@@ -1506,7 +1508,7 @@ config SMSC_SCH311X_WDT
 
 config SMSC37B787_WDT
 	tristate "Winbond SMsC37B787 Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the hardware watchdog component on the
 	  Winbond SMsC37B787 chipset as used on the NetRunner Mainboard
@@ -1526,7 +1528,7 @@ config SMSC37B787_WDT
 
 config TQMX86_WDT
 	tristate "TQ-Systems TQMX86 Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  This is the driver for the hardware watchdog timer in the TQMX86 IO
@@ -1539,7 +1541,7 @@ config TQMX86_WDT
 
 config VIA_WDT
 	tristate "VIA Watchdog Timer"
-	depends on X86 && PCI
+	depends on (X86 || COMPILE_TEST) && PCI
 	select WATCHDOG_CORE
 	help
 	  This is the driver for the hardware watchdog timer on VIA
@@ -1552,7 +1554,7 @@ config VIA_WDT
 
 config W83627HF_WDT
 	tristate "Watchdog timer for W83627HF/W83627DHG and compatibles"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  This is the driver for the hardware watchdog on the following
@@ -1582,7 +1584,7 @@ config W83627HF_WDT
 
 config W83877F_WDT
 	tristate "W83877F (EMACS) Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the hardware watchdog on the W83877F chipset
 	  as used in EMACS PC-104 motherboards (and likely others).  This
@@ -1597,7 +1599,7 @@ config W83877F_WDT
 
 config W83977F_WDT
 	tristate "W83977F (PCM-5335) Watchdog Timer"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the hardware watchdog on the W83977F I/O chip
 	  as used in AAEON's PCM-5335 SBC (and likely others).  This
@@ -1610,7 +1612,7 @@ config W83977F_WDT
 
 config MACHZ_WDT
 	tristate "ZF MachZ Watchdog"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  If you are using a ZF Micro MachZ processor, say Y here, otherwise
 	  N.  This is the driver for the watchdog timer built-in on that
@@ -1623,7 +1625,7 @@ config MACHZ_WDT
 
 config SBC_EPX_C3_WATCHDOG
 	tristate "Winsystems SBC EPX-C3 watchdog"
-	depends on X86
+	depends on X86 || COMPILE_TEST
 	help
 	  This is the driver for the built-in watchdog timer on the EPX-C3
 	  Single-board computer made by Winsystems, Inc.
@@ -1739,7 +1741,7 @@ config INDYDOG
 
 config JZ4740_WDT
 	tristate "Ingenic jz4740 SoC hardware watchdog"
-	depends on MIPS
+	depends on MIPS || COMPILE_TEST
 	depends on COMMON_CLK
 	select WATCHDOG_CORE
 	select MFD_SYSCON
@@ -1798,6 +1800,19 @@ config OCTEON_WDT
 	  from the first interrupt, it is then only poked when the
 	  device is written.
 
+config MARVELL_GTI_WDT
+	tristate "Marvell GTI Watchdog driver"
+	depends on ARCH_THUNDER || (COMPILE_TEST && 64BIT)
+	default y
+	select WATCHDOG_CORE
+	help
+	  Marvell GTI hardware supports watchdog timer. First timeout
+	  works as watchdog pretimeout and installed interrupt handler
+	  will be called on first timeout. Hardware can generate interrupt
+	  to SCP on second timeout but it is not enabled, so second
+	  timeout is ignored. If device poke does not happen then system
+	  will reboot on third timeout.
+
 config BCM2835_WDT
 	tristate "Broadcom BCM2835 hardware watchdog"
 	depends on ARCH_BCM2835 || (OF && COMPILE_TEST)
@@ -1823,7 +1838,7 @@ config BCM_KONA_WDT
 
 config BCM_KONA_WDT_DEBUG
 	bool "DEBUGFS support for BCM Kona Watchdog"
-	depends on BCM_KONA_WDT
+	depends on BCM_KONA_WDT || COMPILE_TEST
 	help
 	  If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides
 	  access to the driver's internal data structures as well as watchdog
@@ -1864,7 +1879,7 @@ config LANTIQ_WDT
 
 config LOONGSON1_WDT
 	tristate "Loongson1 SoC hardware watchdog"
-	depends on MACH_LOONGSON32
+	depends on MACH_LOONGSON32 || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  Hardware driver for the Loongson1 SoC Watchdog Timer.
@@ -1878,7 +1893,7 @@ config RALINK_WDT
 
 config GXP_WATCHDOG
 	tristate "HPE GXP watchdog support"
-	depends on ARCH_HPE_GXP
+	depends on ARCH_HPE_GXP || COMPILE_TEST
 	select WATCHDOG_CORE
 	help
 	  Say Y here to include support for the watchdog timer

drivers/watchdog/Makefile

@@ -98,6 +98,7 @@ obj-$(CONFIG_VISCONTI_WATCHDOG) += visconti_wdt.o
 obj-$(CONFIG_MSC313E_WATCHDOG) += msc313e_wdt.o
 obj-$(CONFIG_APPLE_WATCHDOG) += apple_wdt.o
 obj-$(CONFIG_SUNPLUS_WATCHDOG) += sunplus_wdt.o
+obj-$(CONFIG_MARVELL_GTI_WDT) += marvell_gti_wdt.o
 
 # X86 (i386 + ia64 + x86_64) Architecture
 obj-$(CONFIG_ACQUIRE_WDT) += acquirewdt.o

drivers/watchdog/armada_37xx_wdt.c

@@ -14,7 +14,6 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/types.h>

drivers/watchdog/at91rm9200_wdt.c

@@ -18,6 +18,7 @@
 #include <linux/mfd/syscon.h>
 #include <linux/mfd/syscon/atmel-st.h>
 #include <linux/miscdevice.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/platform_device.h>
@@ -26,8 +27,6 @@
 #include <linux/types.h>
 #include <linux/watchdog.h>
 #include <linux/uaccess.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 
 #define WDT_DEFAULT_TIME	5	/* seconds */
 #define WDT_MAX_TIME		256	/* seconds */

drivers/watchdog/cpwd.c

@@ -31,7 +31,7 @@
 #include <linux/mutex.h>
 #include <linux/io.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/platform_device.h>
 #include <linux/uaccess.h>
 
 #include <asm/irq.h>

drivers/watchdog/ftwdt010_wdt.c

@@ -14,7 +14,7 @@
 #include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/watchdog.h>
@@ -221,20 +221,18 @@ static const struct dev_pm_ops ftwdt010_wdt_dev_pm_ops = {
 				ftwdt010_wdt_resume)
 };
 
-#ifdef CONFIG_OF
 static const struct of_device_id ftwdt010_wdt_match[] = {
 	{ .compatible = "faraday,ftwdt010" },
 	{ .compatible = "cortina,gemini-watchdog" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, ftwdt010_wdt_match);
-#endif
 
 static struct platform_driver ftwdt010_wdt_driver = {
 	.probe		= ftwdt010_wdt_probe,
 	.driver		= {
 		.name	= "ftwdt010-wdt",
-		.of_match_table = of_match_ptr(ftwdt010_wdt_match),
+		.of_match_table = ftwdt010_wdt_match,
 		.pm = &ftwdt010_wdt_dev_pm_ops,
 	},
 };

drivers/watchdog/gef_wdt.c

@@ -31,7 +31,7 @@
 #include <linux/fs.h>
 #include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
 

drivers/watchdog/imx2_wdt.c

@@ -26,8 +26,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
 #include <linux/watchdog.h>
@@ -375,7 +374,7 @@ static void imx2_wdt_shutdown(struct platform_device *pdev)
 		 */
 		imx2_wdt_set_timeout(wdog, IMX2_WDT_MAX_TIME);
 		imx2_wdt_ping(wdog);
-		dev_crit(&pdev->dev, "Device shutdown: Expect reboot!\n");
+		dev_crit(&pdev->dev, "Device shutdown.\n");
 	}
 }
 

drivers/watchdog/imx7ulp_wdt.c

@@ -9,7 +9,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/reboot.h>
 #include <linux/watchdog.h>

drivers/watchdog/intel-mid_wdt.c

@@ -203,3 +203,4 @@ module_platform_driver(mid_wdt_driver);
 MODULE_AUTHOR("David Cohen <david.a.cohen@linux.intel.com>");
 MODULE_DESCRIPTION("Watchdog Driver for Intel MID platform");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:intel_mid_wdt");

drivers/watchdog/lantiq_wdt.c

@@ -9,7 +9,8 @@
 #include <linux/module.h>
 #include <linux/bitops.h>
 #include <linux/watchdog.h>
-#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
 #include <linux/uaccess.h>
 #include <linux/clk.h>
 #include <linux/io.h>

drivers/watchdog/loongson1_wdt.c

@@ -4,6 +4,7 @@
  */
 
 #include <linux/clk.h>
+#include <linux/io.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>

drivers/watchdog/marvell_gti_wdt.c

+// SPDX-License-Identifier: GPL-2.0
+/* Marvell GTI Watchdog driver
+ *
+ * Copyright (C) 2023 Marvell.
+ */
+
+#include <linux/clk.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/watchdog.h>
+
+/*
+ * Hardware supports following mode of operation:
+ * 1) Interrupt Only:
+ *    This will generate the interrupt to arm core whenever timeout happens.
+ *
+ * 2) Interrupt + del3t (Interrupt to firmware (SCP processor)).
+ *    This will generate interrupt to arm core on 1st timeout happens
+ *    This will generate interrupt to SCP processor on 2nd timeout happens
+ *
+ * 3) Interrupt + Interrupt to SCP processor (called delt3t) + reboot.
+ *    This will generate interrupt to arm core on 1st timeout happens
+ *    Will generate interrupt to SCP processor on 2nd timeout happens,
+ *    if interrupt is configured.
+ *    Reboot on 3rd timeout.
+ *
+ * Driver will use hardware in mode-3 above so that system can reboot in case
+ * a hardware hang. Also h/w is configured not to generate SCP interrupt, so
+ * effectively 2nd timeout is ignored within hardware.
+ *
+ * First timeout is effectively watchdog pretimeout.
+ */
+
+/* GTI CWD Watchdog (GTI_CWD_WDOG) Register */
+#define GTI_CWD_WDOG(reg_offset)	(0x8 * (reg_offset))
+#define GTI_CWD_WDOG_MODE_INT_DEL3T_RST	0x3
+#define GTI_CWD_WDOG_MODE_MASK		GENMASK_ULL(1, 0)
+#define GTI_CWD_WDOG_LEN_SHIFT		4
+#define GTI_CWD_WDOG_LEN_MASK		GENMASK_ULL(19, 4)
+#define GTI_CWD_WDOG_CNT_SHIFT		20
+#define GTI_CWD_WDOG_CNT_MASK		GENMASK_ULL(43, 20)
+
+/* GTI CWD Watchdog Interrupt (GTI_CWD_INT) Register */
+#define GTI_CWD_INT			0x200
+#define GTI_CWD_INT_PENDING_STATUS(bit)	BIT_ULL(bit)
+
+/* GTI CWD Watchdog Interrupt Enable Clear (GTI_CWD_INT_ENA_CLR) Register */
+#define GTI_CWD_INT_ENA_CLR		0x210
+#define GTI_CWD_INT_ENA_CLR_VAL(bit)	BIT_ULL(bit)
+
+/* GTI CWD Watchdog Interrupt Enable Set (GTI_CWD_INT_ENA_SET) Register */
+#define GTI_CWD_INT_ENA_SET		0x218
+#define GTI_CWD_INT_ENA_SET_VAL(bit)	BIT_ULL(bit)
+
+/* GTI CWD Watchdog Poke (GTI_CWD_POKE) Registers */
+#define GTI_CWD_POKE(reg_offset)	(0x10000 + 0x8 * (reg_offset))
+#define GTI_CWD_POKE_VAL		1
+
+struct gti_match_data {
+	u32 gti_num_timers;
+};
+
+static const struct gti_match_data match_data_octeontx2 = {
+	.gti_num_timers = 54,
+};
+
+static const struct gti_match_data match_data_cn10k = {
+	.gti_num_timers = 64,
+};
+
+struct gti_wdt_priv {
+	struct watchdog_device wdev;
+	void __iomem *base;
+	u32 clock_freq;
+	struct clk *sclk;
+	/* wdt_timer_idx used for timer to be used for system watchdog */
+	u32 wdt_timer_idx;
+	const struct gti_match_data *data;
+};
+
+static irqreturn_t gti_wdt_interrupt(int irq, void *data)
+{
+	struct watchdog_device *wdev = data;
+	struct gti_wdt_priv *priv = watchdog_get_drvdata(wdev);
+
+	/* Clear Interrupt Pending Status */
+	writeq(GTI_CWD_INT_PENDING_STATUS(priv->wdt_timer_idx),
+	       priv->base + GTI_CWD_INT);
+
+	watchdog_notify_pretimeout(wdev);
+
+	return IRQ_HANDLED;
+}
+
+static int gti_wdt_ping(struct watchdog_device *wdev)
+{
+	struct gti_wdt_priv *priv = watchdog_get_drvdata(wdev);
+
+	writeq(GTI_CWD_POKE_VAL,
+	       priv->base + GTI_CWD_POKE(priv->wdt_timer_idx));
+
+	return 0;
+}
+
+static int gti_wdt_start(struct watchdog_device *wdev)
+{
+	struct gti_wdt_priv *priv = watchdog_get_drvdata(wdev);
+	u64 regval;
+
+	if (!wdev->pretimeout)
+		return -EINVAL;
+
+	set_bit(WDOG_HW_RUNNING, &wdev->status);
+
+	/* Clear any pending interrupt */
+	writeq(GTI_CWD_INT_PENDING_STATUS(priv->wdt_timer_idx),
+	       priv->base + GTI_CWD_INT);
+
+	/* Enable Interrupt */
+	writeq(GTI_CWD_INT_ENA_SET_VAL(priv->wdt_timer_idx),
+	       priv->base + GTI_CWD_INT_ENA_SET);
+
+	/* Set (Interrupt + SCP interrupt (DEL3T) + core domain reset) Mode */
+	regval = readq(priv->base + GTI_CWD_WDOG(priv->wdt_timer_idx));
+	regval |= GTI_CWD_WDOG_MODE_INT_DEL3T_RST;
+	writeq(regval, priv->base + GTI_CWD_WDOG(priv->wdt_timer_idx));
+
+	return 0;
+}
+
+static int gti_wdt_stop(struct watchdog_device *wdev)
+{
+	struct gti_wdt_priv *priv = watchdog_get_drvdata(wdev);
+	u64 regval;
+
+	/* Disable Interrupt */
+	writeq(GTI_CWD_INT_ENA_CLR_VAL(priv->wdt_timer_idx),
+	       priv->base + GTI_CWD_INT_ENA_CLR);
+
+	/* Set GTI_CWD_WDOG.Mode = 0 to stop the timer */
+	regval = readq(priv->base + GTI_CWD_WDOG(priv->wdt_timer_idx));
+	regval &= ~GTI_CWD_WDOG_MODE_MASK;
+	writeq(regval, priv->base + GTI_CWD_WDOG(priv->wdt_timer_idx));
+
+	return 0;
+}
+
+static int gti_wdt_settimeout(struct watchdog_device *wdev,
+					unsigned int timeout)
+{
+	struct gti_wdt_priv *priv = watchdog_get_drvdata(wdev);
+	u64 timeout_wdog, regval;
+
+	/* Update new timeout */
+	wdev->timeout = timeout;
+
+	/* Pretimeout is 1/3 of timeout */
+	wdev->pretimeout = timeout / 3;
+
+	/* Get clock cycles from pretimeout */
+	timeout_wdog = (u64)priv->clock_freq * wdev->pretimeout;
+
+	/* Watchdog counts in 1024 cycle steps */
+	timeout_wdog = timeout_wdog >> 10;
+
+	/* GTI_CWD_WDOG.CNT: reload counter is 16-bit */
+	timeout_wdog = (timeout_wdog + 0xff) >> 8;
+	if (timeout_wdog >= 0x10000)
+		timeout_wdog = 0xffff;
+
+	/*
+	 * GTI_CWD_WDOG.LEN is 24bit, lower 8-bits should be zero and
+	 * upper 16-bits are same as GTI_CWD_WDOG.CNT
+	 */
+	regval = readq(priv->base + GTI_CWD_WDOG(priv->wdt_timer_idx));
+	regval &= GTI_CWD_WDOG_MODE_MASK;
+	regval |= (timeout_wdog << (GTI_CWD_WDOG_CNT_SHIFT + 8)) |
+		   (timeout_wdog << GTI_CWD_WDOG_LEN_SHIFT);
+	writeq(regval, priv->base + GTI_CWD_WDOG(priv->wdt_timer_idx));
+
+	return 0;
+}
+
+static int gti_wdt_set_pretimeout(struct watchdog_device *wdev,
+					unsigned int timeout)
+{
+	struct gti_wdt_priv *priv = watchdog_get_drvdata(wdev);
+	struct watchdog_device *wdog_dev = &priv->wdev;
+
+	/* pretimeout should 1/3 of max_timeout */
+	if (timeout * 3 <= wdog_dev->max_timeout)
+		return gti_wdt_settimeout(wdev, timeout * 3);
+
+	return -EINVAL;
+}
+
+static void gti_clk_disable_unprepare(void *data)
+{
+	clk_disable_unprepare(data);
+}
+
+static int gti_wdt_get_cntfrq(struct platform_device *pdev,
+			      struct gti_wdt_priv *priv)
+{
+	int err;
+
+	priv->sclk = devm_clk_get_enabled(&pdev->dev, NULL);
+	if (IS_ERR(priv->sclk))
+		return PTR_ERR(priv->sclk);
+
+	err = devm_add_action_or_reset(&pdev->dev,
+				       gti_clk_disable_unprepare, priv->sclk);
+	if (err)
+		return err;
+
+	priv->clock_freq = clk_get_rate(priv->sclk);
+	if (!priv->clock_freq)
+		return -EINVAL;
+
+	return 0;
+}
+
+static const struct watchdog_info gti_wdt_ident = {
+	.identity = "Marvell GTI watchdog",
+	.options = WDIOF_SETTIMEOUT | WDIOF_PRETIMEOUT | WDIOF_KEEPALIVEPING |
+		   WDIOF_MAGICCLOSE | WDIOF_CARDRESET,
+};
+
+static const struct watchdog_ops gti_wdt_ops = {
+	.owner = THIS_MODULE,
+	.start = gti_wdt_start,
+	.stop = gti_wdt_stop,
+	.ping = gti_wdt_ping,
+	.set_timeout = gti_wdt_settimeout,
+	.set_pretimeout = gti_wdt_set_pretimeout,
+};
+
+static int gti_wdt_probe(struct platform_device *pdev)
+{
+	struct gti_wdt_priv *priv;
+	struct device *dev = &pdev->dev;
+	struct watchdog_device *wdog_dev;
+	u64 max_pretimeout;
+	u32 wdt_idx;
+	int irq;
+	int err;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(priv->base))
+		return dev_err_probe(&pdev->dev, PTR_ERR(priv->base),
+			      "reg property not valid/found\n");
+
+	err = gti_wdt_get_cntfrq(pdev, priv);
+	if (err)
+		return dev_err_probe(&pdev->dev, err,
+				     "GTI clock frequency not valid/found");
+
+	priv->data = of_device_get_match_data(dev);
+
+	/* default use last timer for watchdog */
+	priv->wdt_timer_idx = priv->data->gti_num_timers - 1;
+
+	err = of_property_read_u32(dev->of_node, "marvell,wdt-timer-index",
+				   &wdt_idx);
+	if (!err) {
+		if (wdt_idx >= priv->data->gti_num_timers)
+			return dev_err_probe(&pdev->dev, err,
+				"GTI wdog timer index not valid");
+
+		priv->wdt_timer_idx = wdt_idx;
+	}
+
+	wdog_dev = &priv->wdev;
+	wdog_dev->info = &gti_wdt_ident,
+	wdog_dev->ops = &gti_wdt_ops,
+	wdog_dev->parent = dev;
+	/*
+	 * Watchdog counter is 24 bit where lower 8 bits are zeros
+	 * This counter decrements every 1024 clock cycles.
+	 */
+	max_pretimeout = (GTI_CWD_WDOG_CNT_MASK >> GTI_CWD_WDOG_CNT_SHIFT);
+	max_pretimeout &= ~0xFFUL;
+	max_pretimeout = (max_pretimeout * 1024) / priv->clock_freq;
+	wdog_dev->pretimeout = max_pretimeout;
+
+	/* Maximum timeout is 3 times the pretimeout */
+	wdog_dev->max_timeout = max_pretimeout * 3;
+	/* Minimum first timeout (pretimeout) is 1, so min_timeout as 3 */
+	wdog_dev->min_timeout = 3;
+	wdog_dev->timeout = wdog_dev->pretimeout;
+
+	watchdog_set_drvdata(wdog_dev, priv);
+	platform_set_drvdata(pdev, priv);
+	gti_wdt_settimeout(wdog_dev, wdog_dev->timeout);
+	watchdog_stop_on_reboot(wdog_dev);
+	watchdog_stop_on_unregister(wdog_dev);
+
+	err = devm_watchdog_register_device(dev, wdog_dev);
+	if (err)
+		return err;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return dev_err_probe(&pdev->dev, irq, "IRQ resource not found\n");
+
+	err = devm_request_irq(dev, irq, gti_wdt_interrupt, 0,
+			       pdev->name, &priv->wdev);
+	if (err)
+		return dev_err_probe(dev, err, "Failed to register interrupt handler\n");
+
+	dev_info(dev, "Watchdog enabled (timeout=%d sec)\n", wdog_dev->timeout);
+	return 0;
+}
+
+static const struct of_device_id gti_wdt_of_match[] = {
+	{ .compatible = "marvell,cn9670-wdt", .data = &match_data_octeontx2},
+	{ .compatible = "marvell,cn10624-wdt", .data = &match_data_cn10k},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, gti_wdt_of_match);
+
+static struct platform_driver gti_wdt_driver = {
+	.driver = {
+		.name = "gti-wdt",
+		.of_match_table = gti_wdt_of_match,
+	},
+	.probe = gti_wdt_probe,
+};
+module_platform_driver(gti_wdt_driver);
+
+MODULE_AUTHOR("Bharat Bhushan <bbhushan2@marvell.com>");
+MODULE_DESCRIPTION("Marvell GTI watchdog driver");
+MODULE_LICENSE("GPL");

drivers/watchdog/menz69_wdt.c

@@ -153,7 +153,6 @@ MODULE_DEVICE_TABLE(mcb, men_z069_ids);
 static struct mcb_driver men_z069_driver = {
 	.driver = {
 		.name = "z069-wdt",
-		.owner = THIS_MODULE,
 	},
 	.probe = men_z069_probe,
 	.remove = men_z069_remove,

drivers/watchdog/meson_gxbb_wdt.c

@@ -22,7 +22,6 @@
 
 #define GXBB_WDT_CTRL_CLKDIV_EN			BIT(25)
 #define GXBB_WDT_CTRL_CLK_EN			BIT(24)
-#define GXBB_WDT_CTRL_EE_RESET			BIT(21)
 #define GXBB_WDT_CTRL_EN			BIT(18)
 #define GXBB_WDT_CTRL_DIV_MASK			(BIT(18) - 1)
 
@@ -45,6 +44,10 @@ struct meson_gxbb_wdt {
 	struct clk *clk;
 };
 
+struct wdt_params {
+	u32 rst;
+};
+
 static int meson_gxbb_wdt_start(struct watchdog_device *wdt_dev)
 {
 	struct meson_gxbb_wdt *data = watchdog_get_drvdata(wdt_dev);
@@ -140,8 +143,17 @@ static const struct dev_pm_ops meson_gxbb_wdt_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(meson_gxbb_wdt_suspend, meson_gxbb_wdt_resume)
 };
 
+static const struct wdt_params gxbb_params = {
+	.rst = BIT(21),
+};
+
+static const struct wdt_params t7_params = {
+	.rst = BIT(22),
+};
+
 static const struct of_device_id meson_gxbb_wdt_dt_ids[] = {
-	 { .compatible = "amlogic,meson-gxbb-wdt", },
+	 { .compatible = "amlogic,meson-gxbb-wdt", .data = &gxbb_params, },
+	 { .compatible = "amlogic,t7-wdt", .data = &t7_params, },
 	 { /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, meson_gxbb_wdt_dt_ids);
@@ -150,6 +162,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct meson_gxbb_wdt *data;
+	struct wdt_params *params;
 	u32 ctrl_reg;
 
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
@@ -164,6 +177,8 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev)
 	if (IS_ERR(data->clk))
 		return PTR_ERR(data->clk);
 
+	params = (struct wdt_params *)of_device_get_match_data(dev);
+
 	platform_set_drvdata(pdev, data);
 
 	data->wdt_dev.parent = dev;
@@ -191,7 +206,7 @@ static int meson_gxbb_wdt_probe(struct platform_device *pdev)
 	/* Setup with 1ms timebase */
 	ctrl_reg |= ((clk_get_rate(data->clk) / 1000) &
 			GXBB_WDT_CTRL_DIV_MASK) |
-			GXBB_WDT_CTRL_EE_RESET |
+			params->rst |
 			GXBB_WDT_CTRL_CLK_EN |
 			GXBB_WDT_CTRL_CLKDIV_EN;
 

drivers/watchdog/meson_wdt.c

@@ -11,11 +11,11 @@
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/types.h>
 #include <linux/watchdog.h>
 

drivers/watchdog/mpc8xxx_wdt.c

@@ -16,8 +16,8 @@
 #include <linux/fs.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
 #include <linux/module.h>
 #include <linux/watchdog.h>
 #include <linux/io.h>

drivers/watchdog/mtk_wdt.c

@@ -25,7 +25,6 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/reset-controller.h>
 #include <linux/types.h>

drivers/watchdog/of_xilinx_wdt.c

@@ -10,14 +10,13 @@
 #include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/module.h>
+#include <linux/platform_device.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/ioport.h>
 #include <linux/watchdog.h>
 #include <linux/io.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_address.h>
 
 /* Register offsets for the Wdt device */
 #define XWT_TWCSR0_OFFSET   0x0 /* Control/Status Register0 */

drivers/watchdog/pic32-dmt.c

@@ -12,7 +12,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/watchdog.h>

drivers/watchdog/pic32-wdt.c

@@ -12,7 +12,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm.h>
 #include <linux/watchdog.h>

drivers/watchdog/pika_wdt.c

@@ -23,8 +23,8 @@
 #include <linux/bitops.h>
 #include <linux/uaccess.h>
 #include <linux/io.h>
+#include <linux/of.h>
 #include <linux/of_address.h>
-#include <linux/of_platform.h>
 
 #define DRV_NAME "PIKA-WDT"
 

drivers/watchdog/pm8916_wdt.c

@@ -266,7 +266,7 @@ static struct platform_driver pm8916_wdt_driver = {
 	.probe = pm8916_wdt_probe,
 	.driver = {
 		.name = "pm8916-wdt",
-		.of_match_table = of_match_ptr(pm8916_wdt_id_table),
+		.of_match_table = pm8916_wdt_id_table,
 		.pm = &pm8916_wdt_pm_ops,
 	},
 };

drivers/watchdog/qcom-wdt.c

@@ -11,7 +11,6 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/watchdog.h>
-#include <linux/of_device.h>
 
 enum wdt_reg {
 	WDT_RST,

drivers/watchdog/rave-sp-wdt.c

@@ -13,7 +13,7 @@
 #include <linux/mfd/rave-sp.h>
 #include <linux/module.h>
 #include <linux/nvmem-consumer.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/reboot.h>
 #include <linux/slab.h>

drivers/watchdog/riowd.c

@@ -14,7 +14,7 @@
 #include <linux/miscdevice.h>
 #include <linux/watchdog.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
 #include <linux/slab.h>

drivers/watchdog/rti_wdt.c

@@ -14,6 +14,8 @@
 #include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/types.h>
@@ -52,6 +54,11 @@
 
 #define DWDST			BIT(1)
 
+#define PON_REASON_SOF_NUM	0xBBBBCCCC
+#define PON_REASON_MAGIC_NUM	0xDDDDDDDD
+#define PON_REASON_EOF_NUM	0xCCCCBBBB
+#define RESERVED_MEM_MIN_SIZE	12
+
 static int heartbeat = DEFAULT_HEARTBEAT;
 
 /*
@@ -198,6 +205,11 @@ static int rti_wdt_probe(struct platform_device *pdev)
 	struct rti_wdt_device *wdt;
 	struct clk *clk;
 	u32 last_ping = 0;
+	struct device_node *node;
+	u32 reserved_mem_size;
+	struct resource res;
+	u32 *vaddr;
+	u64 paddr;
 
 	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
 	if (!wdt)
@@ -284,6 +296,42 @@ static int rti_wdt_probe(struct platform_device *pdev)
 		}
 	}
 
+	node = of_parse_phandle(pdev->dev.of_node, "memory-region", 0);
+	if (node) {
+		ret = of_address_to_resource(node, 0, &res);
+		if (ret) {
+			dev_err(dev, "No memory address assigned to the region.\n");
+			goto err_iomap;
+		}
+
+		/*
+		 * If reserved memory is defined for watchdog reset cause.
+		 * Readout the Power-on(PON) reason and pass to bootstatus.
+		 */
+		paddr = res.start;
+		reserved_mem_size = resource_size(&res);
+		if (reserved_mem_size < RESERVED_MEM_MIN_SIZE) {
+			dev_err(dev, "The size of reserved memory is too small.\n");
+			ret = -EINVAL;
+			goto err_iomap;
+		}
+
+		vaddr = memremap(paddr, reserved_mem_size, MEMREMAP_WB);
+		if (!vaddr) {
+			dev_err(dev, "Failed to map memory-region.\n");
+			ret = -ENOMEM;
+			goto err_iomap;
+		}
+
+		if (vaddr[0] == PON_REASON_SOF_NUM &&
+		    vaddr[1] == PON_REASON_MAGIC_NUM &&
+		    vaddr[2] == PON_REASON_EOF_NUM) {
+			wdd->bootstatus |= WDIOF_CARDRESET;
+		}
+		memset(vaddr, 0, reserved_mem_size);
+		memunmap(vaddr);
+	}
+
 	watchdog_init_timeout(wdd, heartbeat, dev);
 
 	ret = watchdog_register_device(wdd);

drivers/watchdog/rza_wdt.c

@@ -9,9 +9,9 @@
 #include <linux/bitops.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
+#include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/watchdog.h>
 

drivers/watchdog/rzg2l_wdt.c

@@ -11,7 +11,7 @@
 #include <linux/iopoll.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/reset.h>

drivers/watchdog/s3c2410_wdt.c

@@ -23,7 +23,6 @@
 #include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/mfd/syscon.h>
 #include <linux/regmap.h>
 #include <linux/delay.h>
@@ -379,10 +378,11 @@ static int s3c2410wdt_enable(struct s3c2410_wdt *wdt, bool en)
 static int s3c2410wdt_keepalive(struct watchdog_device *wdd)
 {
 	struct s3c2410_wdt *wdt = watchdog_get_drvdata(wdd);
+	unsigned long flags;
 
-	spin_lock(&wdt->lock);
+	spin_lock_irqsave(&wdt->lock, flags);
 	writel(wdt->count, wdt->reg_base + S3C2410_WTCNT);
-	spin_unlock(&wdt->lock);
+	spin_unlock_irqrestore(&wdt->lock, flags);
 
 	return 0;
 }
@@ -399,10 +399,11 @@ static void __s3c2410wdt_stop(struct s3c2410_wdt *wdt)
 static int s3c2410wdt_stop(struct watchdog_device *wdd)
 {
 	struct s3c2410_wdt *wdt = watchdog_get_drvdata(wdd);
+	unsigned long flags;
 
-	spin_lock(&wdt->lock);
+	spin_lock_irqsave(&wdt->lock, flags);
 	__s3c2410wdt_stop(wdt);
-	spin_unlock(&wdt->lock);
+	spin_unlock_irqrestore(&wdt->lock, flags);
 
 	return 0;
 }
@@ -411,8 +412,9 @@ static int s3c2410wdt_start(struct watchdog_device *wdd)
 {
 	unsigned long wtcon;
 	struct s3c2410_wdt *wdt = watchdog_get_drvdata(wdd);
+	unsigned long flags;
 
-	spin_lock(&wdt->lock);
+	spin_lock_irqsave(&wdt->lock, flags);
 
 	__s3c2410wdt_stop(wdt);
 
@@ -433,7 +435,7 @@ static int s3c2410wdt_start(struct watchdog_device *wdd)
 	writel(wdt->count, wdt->reg_base + S3C2410_WTDAT);
 	writel(wdt->count, wdt->reg_base + S3C2410_WTCNT);
 	writel(wtcon, wdt->reg_base + S3C2410_WTCON);
-	spin_unlock(&wdt->lock);
+	spin_unlock_irqrestore(&wdt->lock, flags);
 
 	return 0;
 }

drivers/watchdog/sama5d4_wdt.c

@@ -11,7 +11,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/of_irq.h>
 #include <linux/platform_device.h>
 #include <linux/reboot.h>
@@ -255,6 +254,7 @@ static int sama5d4_wdt_probe(struct platform_device *pdev)
 	struct sama5d4_wdt *wdt;
 	void __iomem *regs;
 	u32 irq = 0;
+	u32 reg;
 	int ret;
 
 	wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL);
@@ -305,6 +305,12 @@ static int sama5d4_wdt_probe(struct platform_device *pdev)
 
 	watchdog_init_timeout(wdd, wdt_timeout, dev);
 
+	reg = wdt_read(wdt, AT91_WDT_MR);
+	if (!(reg & AT91_WDT_WDDIS)) {
+		wdt->mr &= ~AT91_WDT_WDDIS;
+		set_bit(WDOG_HW_RUNNING, &wdd->status);
+	}
+
 	ret = sama5d4_wdt_init(wdt);
 	if (ret)
 		return ret;

drivers/watchdog/sbsa_gwdt.c

@@ -43,10 +43,9 @@
 #include <linux/io.h>
 #include <linux/io-64-nonatomic-lo-hi.h>
 #include <linux/interrupt.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/uaccess.h>
 #include <linux/watchdog.h>

drivers/watchdog/starfive-wdt.c

@@ -8,7 +8,8 @@
 #include <linux/clk.h>
 #include <linux/iopoll.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
 #include <linux/reset.h>
 #include <linux/watchdog.h>
@@ -526,7 +527,6 @@ static void starfive_wdt_shutdown(struct platform_device *pdev)
 	starfive_wdt_pm_stop(&wdt->wdd);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int starfive_wdt_suspend(struct device *dev)
 {
 	struct starfive_wdt *wdt = dev_get_drvdata(dev);
@@ -556,9 +556,7 @@ static int starfive_wdt_resume(struct device *dev)
 
 	return starfive_wdt_start(wdt);
 }
-#endif /* CONFIG_PM_SLEEP */
 
-#ifdef CONFIG_PM
 static int starfive_wdt_runtime_suspend(struct device *dev)
 {
 	struct starfive_wdt *wdt = dev_get_drvdata(dev);
@@ -574,11 +572,10 @@ static int starfive_wdt_runtime_resume(struct device *dev)
 
 	return starfive_wdt_enable_clock(wdt);
 }
-#endif /* CONFIG_PM */
 
 static const struct dev_pm_ops starfive_wdt_pm_ops = {
-	SET_RUNTIME_PM_OPS(starfive_wdt_runtime_suspend, starfive_wdt_runtime_resume, NULL)
-	SET_SYSTEM_SLEEP_PM_OPS(starfive_wdt_suspend, starfive_wdt_resume)
+	RUNTIME_PM_OPS(starfive_wdt_runtime_suspend, starfive_wdt_runtime_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(starfive_wdt_suspend, starfive_wdt_resume)
 };
 
 static const struct of_device_id starfive_wdt_match[] = {
@@ -594,7 +591,7 @@ static struct platform_driver starfive_wdt_driver = {
 	.shutdown = starfive_wdt_shutdown,
 	.driver = {
 		.name = "starfive-wdt",
-		.pm = &starfive_wdt_pm_ops,
+		.pm = pm_ptr(&starfive_wdt_pm_ops),
 		.of_match_table = starfive_wdt_match,
 	},
 };

drivers/watchdog/stm32_iwdg.c

@@ -17,7 +17,6 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/watchdog.h>
 
@@ -288,7 +287,7 @@ static struct platform_driver stm32_iwdg_driver = {
 	.probe		= stm32_iwdg_probe,
 	.driver = {
 		.name	= "iwdg",
-		.of_match_table = of_match_ptr(stm32_iwdg_of_match),
+		.of_match_table = stm32_iwdg_of_match,
 	},
 };
 module_platform_driver(stm32_iwdg_driver);

drivers/watchdog/sunxi_wdt.c

@@ -18,7 +18,6 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/types.h>
 #include <linux/watchdog.h>

drivers/watchdog/watchdog_core.c

@@ -161,7 +161,7 @@ static int watchdog_reboot_notifier(struct notifier_block *nb,
 	struct watchdog_device *wdd;
 
 	wdd = container_of(nb, struct watchdog_device, reboot_nb);
-	if (code == SYS_DOWN || code == SYS_HALT) {
+	if (code == SYS_DOWN || code == SYS_HALT || code == SYS_POWER_OFF) {
 		if (watchdog_hw_running(wdd)) {
 			int ret;
 

drivers/watchdog/xilinx_wwdt.c

@@ -9,9 +9,10 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/ioport.h>
+#include <linux/math64.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/of_address.h>
+#include <linux/platform_device.h>
 #include <linux/watchdog.h>
 
 /* Max timeout is calculated at 100MHz source clock */
@@ -71,7 +72,7 @@ static int xilinx_wwdt_start(struct watchdog_device *wdd)
 
 	/* Calculate timeout count */
 	time_out = xdev->freq * wdd->timeout;
-	closed_timeout = (time_out * xdev->close_percent) / 100;
+	closed_timeout = div_u64(time_out * xdev->close_percent, 100);
 	open_timeout = time_out - closed_timeout;
 	wdd->min_hw_heartbeat_ms = xdev->close_percent * 10 * wdd->timeout;