Merge git://www.linux-watchdog.org/linux-watchdog

833e6834 · Linus Torvalds <[email protected]> · 2013-07-13 13:42:54 -07:00

Pull watchdog updates from Wim Van Sebroeck:
 - lots of devm_ conversions and cleanup
 - platform_set_drvdata cleanups
 - s3c2410: dev_err/dev_info + dev_pm_ops
 - watchdog_core: don't try to stop device if not running fix
 - wdrtas: use print_hex_dump
 - xilinx cleanups
 - orion_wdt fixes
 - softdog cleanup
 - hpwdt: check on UEFI bits
 - deletion of mpcore_wdt driver
 - addition of broadcom BCM2835 watchdog timer driver
 - addition of MEN A21 watcdog devices

* git://www.linux-watchdog.org/linux-watchdog: (38 commits)
  watchdog: hpwdt: Add check for UEFI bits
  watchdog: softdog: remove replaceable ping operation
  watchdog: New watchdog driver for MEN A21 watchdogs
  Watchdog: fix clearing of the watchdog interrupt
  Watchdog: allow orion_wdt to be built for Dove
  watchdog: Add Broadcom BCM2835 watchdog timer driver
  watchdog: delete mpcore_wdt driver
  watchdog: xilinx: Setup the origin compatible string
  watchdog: xilinx: Fix driver header
  watchdog: wdrtas: don't use custom version of print_hex_dump
  watchdog: core: don't try to stop device if not running
  watchdog: jz4740: Pass device to clk_get
  watchdog: twl4030: Remove redundant platform_set_drvdata()
  watchdog: mpcore: Remove redundant platform_set_drvdata()
  watchdog: da9055: use platform_{get,set}_drvdata()
  watchdog: da9052: use platform_{get,set}_drvdata()
  watchdog: cpwd: use platform_{get,set}_drvdata()
  watchdog: s3c2410_wdt: convert s3c2410wdt to dev_pm_ops
  watchdog: s3c2410_wdt: use dev_err()/dev_info() instead of pr_err()/pr_info()
  watchdog: wm831x: use platform_{get,set}_drvdata()
  ...

Commit: 833e68340d108d88f4cb79b7d7223f6859d362ca
Parents: c5524413 · cce78da7

Merge commit. Changes below are compared with the first parent: c5524413.

Changes

39 files changed · +629 −740

File	Status	Add	Del	Content
Documentation/devicetree/bindings/gpio/men-a021-wdt.txt	added	+25	−0	View file
Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt	modified	+5	−0	View file
Documentation/watchdog/watchdog-parameters.txt	modified	+0	−8	View file
MAINTAINERS	modified	+6	−0	View file
arch/arm/configs/spear13xx_defconfig	modified	+0	−1	View file
arch/arm/mach-dove/include/mach/bridge-regs.h	modified	+1	−0	View file
arch/arm/mach-kirkwood/include/mach/bridge-regs.h	modified	+0	−2	View file
arch/arm/mach-orion5x/include/mach/bridge-regs.h	modified	+0	−3	View file
drivers/watchdog/Kconfig	modified	+24	−10	View file
drivers/watchdog/Makefile	modified	+2	−1	View file
drivers/watchdog/at32ap700x_wdt.c	modified	+5	−12	View file
drivers/watchdog/bcm2835_wdt.c	added	+189	−0	View file
drivers/watchdog/bcm63xx_wdt.c	modified	+4	−5	View file
drivers/watchdog/cpwd.c	modified	+2	−2	View file
drivers/watchdog/da9052_wdt.c	modified	+2	−2	View file
drivers/watchdog/da9055_wdt.c	modified	+2	−2	View file
drivers/watchdog/dw_wdt.c	modified	+4	−7	View file
drivers/watchdog/hpwdt.c	modified	+7	−4	View file
drivers/watchdog/imx2_wdt.c	modified	+2	−4	View file
drivers/watchdog/jz4740_wdt.c	modified	+1	−1	View file
drivers/watchdog/mena21_wdt.c	added	+270	−0	View file
drivers/watchdog/mpcore_wdt.c	deleted	+0	−456	View before deletion
drivers/watchdog/mtx-1_wdt.c	modified	+1	−2	View file
drivers/watchdog/mv64x60_wdt.c	modified	+1	−3	View file
drivers/watchdog/nuc900_wdt.c	modified	+11	−39	View file
drivers/watchdog/of_xilinx_wdt.c	modified	+11	−20	View file
drivers/watchdog/orion_wdt.c	modified	+4	−3	View file
drivers/watchdog/pnx4008_wdt.c	modified	+2	−5	View file
drivers/watchdog/rc32434_wdt.c	modified	+3	−7	View file
drivers/watchdog/riowd.c	modified	+4	−8	View file
drivers/watchdog/s3c2410_wdt.c	modified	+9	−11	View file
drivers/watchdog/shwdt.c	modified	+4	−14	View file
drivers/watchdog/softdog.c	modified	+0	−1	View file
drivers/watchdog/sp805_wdt.c	modified	+2	−5	View file
drivers/watchdog/ts72xx_wdt.c	modified	+10	−57	View file
drivers/watchdog/twl4030_wdt.c	modified	+1	−4	View file
drivers/watchdog/watchdog_dev.c	modified	+4	−2	View file
drivers/watchdog/wdrtas.c	modified	+3	−26	View file
drivers/watchdog/wm831x_wdt.c	modified	+8	−13	View file

Only the first 600 diff lines are shown. Download the complete patch.

Documentation/devicetree/bindings/gpio/men-a021-wdt.txt

View file

diff --git a/Documentation/devicetree/bindings/gpio/men-a021-wdt.txt b/Documentation/devicetree/bindings/gpio/men-a021-wdt.txt
new file mode 100644
index 0000000..370dee3
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/men-a021-wdt.txt
@@ -0,0 +1,25 @@
+Bindings for MEN A21 Watchdog device connected to GPIO lines
+
+Required properties:
+- compatible: "men,a021-wdt"
+- gpios: Specifies the pins that control the Watchdog, order:
+  1: Watchdog enable
+  2: Watchdog fast-mode
+  3: Watchdog trigger
+  4: Watchdog reset cause bit 0
+  5: Watchdog reset cause bit 1
+  6: Watchdog reset cause bit 2
+
+Optional properties:
+- None
+
+Example:
+	watchdog {
+		compatible ="men,a021-wdt";
+		gpios = <&gpio3 9  1	/* WD_EN */
+			 &gpio3 10 1	/* WD_FAST */
+			 &gpio3 11 1	/* WD_TRIG */
+			 &gpio3 6  1	/* RST_CAUSE[0] */
+			 &gpio3 7  1	/* RST_CAUSE[1] */
+			 &gpio3 8  1>;	/* RST_CAUSE[2] */
+	};

Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt

View file

diff --git a/Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt b/Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt
index d209366..f801d71 100644
--- a/Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt
+++ b/Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt
@@ -5,9 +5,14 @@ Required properties:
 - compatible : should be "brcm,bcm2835-pm-wdt"
 - reg : Specifies base physical address and size of the registers.
 
+Optional properties:
+
+- timeout-sec   : Contains the watchdog timeout in seconds
+
 Example:
 
 watchdog {
 	compatible = "brcm,bcm2835-pm-wdt";
 	reg = <0x7e100000 0x28>;
+	timeout-sec = <10>;
 };

Documentation/watchdog/watchdog-parameters.txt

View file

diff --git a/Documentation/watchdog/watchdog-parameters.txt b/Documentation/watchdog/watchdog-parameters.txt
index 04fddba..f9492fe 100644
--- a/Documentation/watchdog/watchdog-parameters.txt
+++ b/Documentation/watchdog/watchdog-parameters.txt
@@ -194,14 +194,6 @@ reset: Watchdog Interrupt/Reset Mode. 0 = interrupt, 1 = reset
 nowayout: Watchdog cannot be stopped once started
 	(default=kernel config parameter)
 -------------------------------------------------
-mpcore_wdt:
-mpcore_margin: MPcore timer margin in seconds.
-	(0 < mpcore_margin < 65536, default=60)
-nowayout: Watchdog cannot be stopped once started
-	(default=kernel config parameter)
-mpcore_noboot: MPcore watchdog action, set to 1 to ignore reboots,
-	0 to reboot (default=0
--------------------------------------------------
 mv64x60_wdt:
 nowayout: Watchdog cannot be stopped once started
 	(default=kernel config parameter)

MAINTAINERS

View file

diff --git a/MAINTAINERS b/MAINTAINERS
index 705681e..4d43db6 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -5387,6 +5387,12 @@ F:	drivers/mtd/
 F:	include/linux/mtd/
 F:	include/uapi/mtd/
 
+MEN A21 WATCHDOG DRIVER
+M:  	Johannes Thumshirn <[email protected]>
+L:	[email protected]
+S:	Supported
+F:	drivers/watchdog/mena21_wdt.c
+
 METAG ARCHITECTURE
 M:	James Hogan <[email protected]>
 S:	Supported

arch/arm/configs/spear13xx_defconfig

View file

diff --git a/arch/arm/configs/spear13xx_defconfig b/arch/arm/configs/spear13xx_defconfig
index 1fdb826..82eaa55 100644
--- a/arch/arm/configs/spear13xx_defconfig
+++ b/arch/arm/configs/spear13xx_defconfig
@@ -61,7 +61,6 @@ CONFIG_GPIO_SYSFS=y
 CONFIG_GPIO_PL061=y
 # CONFIG_HWMON is not set
 CONFIG_WATCHDOG=y
-CONFIG_MPCORE_WATCHDOG=y
 # CONFIG_HID_SUPPORT is not set
 CONFIG_USB=y
 # CONFIG_USB_DEVICE_CLASS is not set

arch/arm/mach-dove/include/mach/bridge-regs.h

View file

diff --git a/arch/arm/mach-dove/include/mach/bridge-regs.h b/arch/arm/mach-dove/include/mach/bridge-regs.h
index 99f259e..5362df3 100644
--- a/arch/arm/mach-dove/include/mach/bridge-regs.h
+++ b/arch/arm/mach-dove/include/mach/bridge-regs.h
@@ -26,6 +26,7 @@
 #define SYSTEM_SOFT_RESET	(BRIDGE_VIRT_BASE + 0x010c)
 #define  SOFT_RESET		0x00000001
 
+#define BRIDGE_CAUSE		(BRIDGE_VIRT_BASE + 0x0110)
 #define  BRIDGE_INT_TIMER1_CLR	(~0x0004)
 
 #define IRQ_VIRT_BASE		(BRIDGE_VIRT_BASE + 0x0200)

arch/arm/mach-kirkwood/include/mach/bridge-regs.h

View file

diff --git a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h
index d4cbe5e..91242c9 100644
--- a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h
+++ b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h
@@ -21,14 +21,12 @@
 #define CPU_RESET		0x00000002
 
 #define RSTOUTn_MASK		(BRIDGE_VIRT_BASE + 0x0108)
-#define WDT_RESET_OUT_EN	0x00000002
 #define SOFT_RESET_OUT_EN	0x00000004
 
 #define SYSTEM_SOFT_RESET	(BRIDGE_VIRT_BASE + 0x010c)
 #define SOFT_RESET		0x00000001
 
 #define BRIDGE_CAUSE		(BRIDGE_VIRT_BASE + 0x0110)
-#define WDT_INT_REQ		0x0008
 
 #define BRIDGE_INT_TIMER1_CLR	(~0x0004)
 

arch/arm/mach-orion5x/include/mach/bridge-regs.h

View file

diff --git a/arch/arm/mach-orion5x/include/mach/bridge-regs.h b/arch/arm/mach-orion5x/include/mach/bridge-regs.h
index 461fd69..f727d03 100644
--- a/arch/arm/mach-orion5x/include/mach/bridge-regs.h
+++ b/arch/arm/mach-orion5x/include/mach/bridge-regs.h
@@ -18,7 +18,6 @@
 #define CPU_CTRL		(ORION5X_BRIDGE_VIRT_BASE + 0x104)
 
 #define RSTOUTn_MASK		(ORION5X_BRIDGE_VIRT_BASE + 0x108)
-#define WDT_RESET_OUT_EN	0x0002
 
 #define CPU_SOFT_RESET		(ORION5X_BRIDGE_VIRT_BASE + 0x10c)
 
@@ -26,8 +25,6 @@
 
 #define POWER_MNG_CTRL_REG	(ORION5X_BRIDGE_VIRT_BASE + 0x11C)
 
-#define WDT_INT_REQ		0x0008
-
 #define BRIDGE_INT_TIMER1_CLR	(~0x0004)
 
 #define MAIN_IRQ_CAUSE		(ORION5X_BRIDGE_VIRT_BASE + 0x200)

drivers/watchdog/Kconfig

View file

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 7460d34..8519bc6 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -221,15 +221,6 @@ config DW_WATCHDOG
 	  To compile this driver as a module, choose M here: the
 	  module will be called dw_wdt.
 
-config MPCORE_WATCHDOG
-	tristate "MPcore watchdog"
-	depends on HAVE_ARM_TWD
-	help
-	  Watchdog timer embedded into the MPcore system.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called mpcore_wdt.
-
 config EP93XX_WATCHDOG
 	tristate "EP93xx Watchdog"
 	depends on ARCH_EP93XX
@@ -291,7 +282,7 @@ config DAVINCI_WATCHDOG
 
 config ORION_WATCHDOG
 	tristate "Orion watchdog"
-	depends on ARCH_ORION5X || ARCH_KIRKWOOD
+	depends on ARCH_ORION5X || ARCH_KIRKWOOD || ARCH_DOVE
 	select WATCHDOG_CORE
 	help
 	  Say Y here if to include support for the watchdog timer
@@ -1109,6 +1100,17 @@ config BCM63XX_WDT
 	  To compile this driver as a loadable module, choose M here.
 	  The module will be called bcm63xx_wdt.
 
+config BCM2835_WDT
+	tristate "Broadcom BCM2835 hardware watchdog"
+	depends on ARCH_BCM2835
+	select WATCHDOG_CORE
+	help
+	  Watchdog driver for the built in watchdog hardware in Broadcom
+	  BCM2835 SoC.
+
+	  To compile this driver as a loadable module, choose M here.
+	  The module will be called bcm2835_wdt.
+
 config LANTIQ_WDT
 	tristate "Lantiq SoC watchdog"
 	depends on LANTIQ
@@ -1183,6 +1185,18 @@ config BOOKE_WDT_DEFAULT_TIMEOUT
 
 	  The value can be overridden by the wdt_period command-line parameter.
 
+config MEN_A21_WDT
+       tristate "MEN A21 VME CPU Carrier Board Watchdog Timer"
+       select WATCHDOG_CORE
+       depends on GPIOLIB
+       help
+        Watchdog driver for MEN A21 VMEbus CPU Carrier Boards.
+
+	The driver can also be built as a module. If so, the module will be
+	called mena21_wdt.
+
+	If unsure select N here.
+
 # PPC64 Architecture
 
 config WATCHDOG_RTAS

drivers/watchdog/Makefile

View file

diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index ec26899..2f26a0b 100644
--- a/drivers/watchdog/Makefile
+++ b/drivers/watchdog/Makefile
@@ -41,7 +41,6 @@ obj-$(CONFIG_KS8695_WATCHDOG) += ks8695_wdt.o
 obj-$(CONFIG_S3C2410_WATCHDOG) += s3c2410_wdt.o
 obj-$(CONFIG_SA1100_WATCHDOG) += sa1100_wdt.o
 obj-$(CONFIG_DW_WATCHDOG) += dw_wdt.o
-obj-$(CONFIG_MPCORE_WATCHDOG) += mpcore_wdt.o
 obj-$(CONFIG_EP93XX_WATCHDOG) += ep93xx_wdt.o
 obj-$(CONFIG_PNX4008_WATCHDOG) += pnx4008_wdt.o
 obj-$(CONFIG_IOP_WATCHDOG) += iop_wdt.o
@@ -54,6 +53,7 @@ obj-$(CONFIG_TS72XX_WATCHDOG) += ts72xx_wdt.o
 obj-$(CONFIG_IMX2_WDT) += imx2_wdt.o
 obj-$(CONFIG_UX500_WATCHDOG) += ux500_wdt.o
 obj-$(CONFIG_RETU_WATCHDOG) += retu_wdt.o
+obj-$(CONFIG_BCM2835_WDT) += bcm2835_wdt.o
 
 # AVR32 Architecture
 obj-$(CONFIG_AT32AP700X_WDT) += at32ap700x_wdt.o
@@ -144,6 +144,7 @@ obj-$(CONFIG_8xxx_WDT) += mpc8xxx_wdt.o
 obj-$(CONFIG_MV64X60_WDT) += mv64x60_wdt.o
 obj-$(CONFIG_PIKA_WDT) += pika_wdt.o
 obj-$(CONFIG_BOOKE_WDT) += booke_wdt.o
+obj-$(CONFIG_MEN_A21_WDT) += mena21_wdt.o
 
 # PPC64 Architecture
 obj-$(CONFIG_WATCHDOG_RTAS) += wdrtas.o

drivers/watchdog/at32ap700x_wdt.c

View file

diff --git a/drivers/watchdog/at32ap700x_wdt.c b/drivers/watchdog/at32ap700x_wdt.c
index 7a715e3..b178e71 100644
--- a/drivers/watchdog/at32ap700x_wdt.c
+++ b/drivers/watchdog/at32ap700x_wdt.c
@@ -321,13 +321,14 @@ static int __init at32_wdt_probe(struct platform_device *pdev)
 		return -ENXIO;
 	}
 
-	wdt = kzalloc(sizeof(struct wdt_at32ap700x), GFP_KERNEL);
+	wdt = devm_kzalloc(&pdev->dev, sizeof(struct wdt_at32ap700x),
+			GFP_KERNEL);
 	if (!wdt) {
 		dev_dbg(&pdev->dev, "no memory for wdt structure\n");
 		return -ENOMEM;
 	}
 
-	wdt->regs = ioremap(regs->start, resource_size(regs));
+	wdt->regs = devm_ioremap(&pdev->dev, regs->start, resource_size(regs));
 	if (!wdt->regs) {
 		ret = -ENOMEM;
 		dev_dbg(&pdev->dev, "could not map I/O memory\n");
@@ -342,7 +343,7 @@ static int __init at32_wdt_probe(struct platform_device *pdev)
 		dev_info(&pdev->dev, "CPU must be reset with external "
 				"reset or POR due to silicon errata.\n");
 		ret = -EIO;
-		goto err_iounmap;
+		goto err_free;
 	} else {
 		wdt->users = 0;
 	}
@@ -364,7 +365,7 @@ static int __init at32_wdt_probe(struct platform_device *pdev)
 	ret = misc_register(&wdt->miscdev);
 	if (ret) {
 		dev_dbg(&pdev->dev, "failed to register wdt miscdev\n");
-		goto err_register;
+		goto err_free;
 	}
 
 	dev_info(&pdev->dev,
@@ -373,12 +374,7 @@ static int __init at32_wdt_probe(struct platform_device *pdev)
 
 	return 0;
 
-err_register:
-	platform_set_drvdata(pdev, NULL);
-err_iounmap:
-	iounmap(wdt->regs);
 err_free:
-	kfree(wdt);
 	wdt = NULL;
 	return ret;
 }
@@ -391,10 +387,7 @@ static int __exit at32_wdt_remove(struct platform_device *pdev)
 			at32_wdt_stop();
 
 		misc_deregister(&wdt->miscdev);
-		iounmap(wdt->regs);
-		kfree(wdt);
 		wdt = NULL;
-		platform_set_drvdata(pdev, NULL);
 	}
 	return 0;
 }

drivers/watchdog/bcm2835_wdt.c

View file

diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c
new file mode 100644
index 0000000..61566fc
--- /dev/null
+++ b/drivers/watchdog/bcm2835_wdt.c
@@ -0,0 +1,189 @@
+/*
+ * Watchdog driver for Broadcom BCM2835
+ *
+ * "bcm2708_wdog" driver written by Luke Diamand that was obtained from
+ * branch "rpi-3.6.y" of git://github.com/raspberrypi/linux.git was used
+ * as a hardware reference for the Broadcom BCM2835 watchdog timer.
+ *
+ * Copyright (C) 2013 Lubomir Rintel <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/io.h>
+#include <linux/watchdog.h>
+#include <linux/platform_device.h>
+#include <linux/of_address.h>
+#include <linux/miscdevice.h>
+
+#define PM_RSTC				0x1c
+#define PM_WDOG				0x24
+
+#define PM_PASSWORD			0x5a000000
+
+#define PM_WDOG_TIME_SET		0x000fffff
+#define PM_RSTC_WRCFG_CLR		0xffffffcf
+#define PM_RSTC_WRCFG_SET		0x00000030
+#define PM_RSTC_WRCFG_FULL_RESET	0x00000020
+#define PM_RSTC_RESET			0x00000102
+
+#define SECS_TO_WDOG_TICKS(x) ((x) << 16)
+#define WDOG_TICKS_TO_SECS(x) ((x) >> 16)
+
+struct bcm2835_wdt {
+	void __iomem		*base;
+	spinlock_t		lock;
+};
+
+static unsigned int heartbeat;
+static bool nowayout = WATCHDOG_NOWAYOUT;
+
+static int bcm2835_wdt_start(struct watchdog_device *wdog)
+{
+	struct bcm2835_wdt *wdt = watchdog_get_drvdata(wdog);
+	uint32_t cur;
+	unsigned long flags;
+
+	spin_lock_irqsave(&wdt->lock, flags);
+
+	writel_relaxed(PM_PASSWORD | (SECS_TO_WDOG_TICKS(wdog->timeout) &
+				PM_WDOG_TIME_SET), wdt->base + PM_WDOG);
+	cur = readl_relaxed(wdt->base + PM_RSTC);
+	writel_relaxed(PM_PASSWORD | (cur & PM_RSTC_WRCFG_CLR) |
+		  PM_RSTC_WRCFG_FULL_RESET, wdt->base + PM_RSTC);
+
+	spin_unlock_irqrestore(&wdt->lock, flags);
+
+	return 0;
+}
+
+static int bcm2835_wdt_stop(struct watchdog_device *wdog)
+{
+	struct bcm2835_wdt *wdt = watchdog_get_drvdata(wdog);
+
+	writel_relaxed(PM_PASSWORD | PM_RSTC_RESET, wdt->base + PM_RSTC);
+	dev_info(wdog->dev, "Watchdog timer stopped");
+	return 0;
+}
+
+static int bcm2835_wdt_set_timeout(struct watchdog_device *wdog, unsigned int t)
+{
+	wdog->timeout = t;
+	return 0;
+}
+
+static unsigned int bcm2835_wdt_get_timeleft(struct watchdog_device *wdog)
+{
+	struct bcm2835_wdt *wdt = watchdog_get_drvdata(wdog);
+
+	uint32_t ret = readl_relaxed(wdt->base + PM_WDOG);
+	return WDOG_TICKS_TO_SECS(ret & PM_WDOG_TIME_SET);
+}
+
+static struct watchdog_ops bcm2835_wdt_ops = {
+	.owner =	THIS_MODULE,
+	.start =	bcm2835_wdt_start,
+	.stop =		bcm2835_wdt_stop,
+	.set_timeout =	bcm2835_wdt_set_timeout,
+	.get_timeleft =	bcm2835_wdt_get_timeleft,
+};
+
+static struct watchdog_info bcm2835_wdt_info = {
+	.options =	WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE |
+			WDIOF_KEEPALIVEPING,
+	.identity =	"Broadcom BCM2835 Watchdog timer",
+};
+
+static struct watchdog_device bcm2835_wdt_wdd = {
+	.info =		&bcm2835_wdt_info,
+	.ops =		&bcm2835_wdt_ops,
+	.min_timeout =	1,
+	.max_timeout =	WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
+	.timeout =	WDOG_TICKS_TO_SECS(PM_WDOG_TIME_SET),
+};
+
+static int bcm2835_wdt_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct device_node *np = dev->of_node;
+	struct bcm2835_wdt *wdt;
+	int err;
+
+	wdt = devm_kzalloc(dev, sizeof(struct bcm2835_wdt), GFP_KERNEL);
+	if (!wdt) {
+		dev_err(dev, "Failed to allocate memory for watchdog device");
+		return -ENOMEM;
+	}
+	platform_set_drvdata(pdev, wdt);
+
+	spin_lock_init(&wdt->lock);
+
+	wdt->base = of_iomap(np, 0);
+	if (!wdt->base) {
+		dev_err(dev, "Failed to remap watchdog regs");
+		return -ENODEV;
+	}
+
+	watchdog_set_drvdata(&bcm2835_wdt_wdd, wdt);
+	watchdog_init_timeout(&bcm2835_wdt_wdd, heartbeat, dev);
+	watchdog_set_nowayout(&bcm2835_wdt_wdd, nowayout);
+	err = watchdog_register_device(&bcm2835_wdt_wdd);
+	if (err) {
+		dev_err(dev, "Failed to register watchdog device");
+		iounmap(wdt->base);
+		return err;
+	}
+
+	dev_info(dev, "Broadcom BCM2835 watchdog timer");
+	return 0;
+}
+
+static int bcm2835_wdt_remove(struct platform_device *pdev)
+{
+	struct bcm2835_wdt *wdt = platform_get_drvdata(pdev);
+
+	watchdog_unregister_device(&bcm2835_wdt_wdd);
+	iounmap(wdt->base);
+
+	return 0;
+}
+
+static void bcm2835_wdt_shutdown(struct platform_device *pdev)
+{
+	bcm2835_wdt_stop(&bcm2835_wdt_wdd);
+}
+
+static const struct of_device_id bcm2835_wdt_of_match[] = {
+	{ .compatible = "brcm,bcm2835-pm-wdt", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, bcm2835_wdt_of_match);
+
+static struct platform_driver bcm2835_wdt_driver = {
+	.probe		= bcm2835_wdt_probe,
+	.remove		= bcm2835_wdt_remove,
+	.shutdown	= bcm2835_wdt_shutdown,
+	.driver = {
+		.name =		"bcm2835-wdt",
+		.owner =	THIS_MODULE,
+		.of_match_table = bcm2835_wdt_of_match,
+	},
+};
+module_platform_driver(bcm2835_wdt_driver);
+
+module_param(heartbeat, uint, 0);
+MODULE_PARM_DESC(heartbeat, "Initial watchdog heartbeat in seconds");
+
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
+				__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
+MODULE_AUTHOR("Lubomir Rintel <[email protected]>");
+MODULE_DESCRIPTION("Driver for Broadcom BCM2835 watchdog timer");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);

drivers/watchdog/bcm63xx_wdt.c

View file

diff --git a/drivers/watchdog/bcm63xx_wdt.c b/drivers/watchdog/bcm63xx_wdt.c
index b2b80d4..a14a58d 100644
--- a/drivers/watchdog/bcm63xx_wdt.c
+++ b/drivers/watchdog/bcm63xx_wdt.c
@@ -16,6 +16,7 @@
 #include <linux/errno.h>
 #include <linux/fs.h>
 #include <linux/init.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
 #include <linux/module.h>
@@ -249,7 +250,8 @@ static int bcm63xx_wdt_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	bcm63xx_wdt_device.regs = ioremap_nocache(r->start, resource_size(r));
+	bcm63xx_wdt_device.regs = devm_ioremap_nocache(&pdev->dev, r->start,
+							resource_size(r));
 	if (!bcm63xx_wdt_device.regs) {
 		dev_err(&pdev->dev, "failed to remap I/O resources\n");
 		return -ENXIO;
@@ -258,7 +260,7 @@ static int bcm63xx_wdt_probe(struct platform_device *pdev)
 	ret = bcm63xx_timer_register(TIMER_WDT_ID, bcm63xx_wdt_isr, NULL);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to register wdt timer isr\n");
-		goto unmap;
+		return ret;
 	}
 
 	if (bcm63xx_wdt_settimeout(wdt_time)) {
@@ -281,8 +283,6 @@ static int bcm63xx_wdt_probe(struct platform_device *pdev)
 
 unregister_timer:
 	bcm63xx_timer_unregister(TIMER_WDT_ID);
-unmap:
-	iounmap(bcm63xx_wdt_device.regs);
 	return ret;
 }
 
@@ -293,7 +293,6 @@ static int bcm63xx_wdt_remove(struct platform_device *pdev)
 
 	misc_deregister(&bcm63xx_wdt_miscdev);
 	bcm63xx_timer_unregister(TIMER_WDT_ID);
-	iounmap(bcm63xx_wdt_device.regs);
 	return 0;
 }
 

drivers/watchdog/cpwd.c

View file

diff --git a/drivers/watchdog/cpwd.c b/drivers/watchdog/cpwd.c
index 7038758..213225e 100644
--- a/drivers/watchdog/cpwd.c
+++ b/drivers/watchdog/cpwd.c
@@ -621,7 +621,7 @@ static int cpwd_probe(struct platform_device *op)
 			WD_BADMODEL);
 	}
 
-	dev_set_drvdata(&op->dev, p);
+	platform_set_drvdata(op, p);
 	cpwd_device = p;
 	err = 0;
 
@@ -642,7 +642,7 @@ out_free:
 
 static int cpwd_remove(struct platform_device *op)
 {
-	struct cpwd *p = dev_get_drvdata(&op->dev);
+	struct cpwd *p = platform_get_drvdata(op);
 	int i;
 
 	for (i = 0; i < WD_NUMDEVS; i++) {

drivers/watchdog/da9052_wdt.c

View file

diff --git a/drivers/watchdog/da9052_wdt.c b/drivers/watchdog/da9052_wdt.c
index 3674450..f09c54e 100644
--- a/drivers/watchdog/da9052_wdt.c
+++ b/drivers/watchdog/da9052_wdt.c
@@ -215,14 +215,14 @@ static int da9052_wdt_probe(struct platform_device *pdev)
 		goto err;
 	}
 
-	dev_set_drvdata(&pdev->dev, driver_data);
+	platform_set_drvdata(pdev, driver_data);
 err:
 	return ret;
 }
 
 static int da9052_wdt_remove(struct platform_device *pdev)
 {
-	struct da9052_wdt_data *driver_data = dev_get_drvdata(&pdev->dev);
+	struct da9052_wdt_data *driver_data = platform_get_drvdata(pdev);
 
 	watchdog_unregister_device(&driver_data->wdt);
 	kref_put(&driver_data->kref, da9052_wdt_release_resources);

drivers/watchdog/da9055_wdt.c

View file

diff --git a/drivers/watchdog/da9055_wdt.c b/drivers/watchdog/da9055_wdt.c
index f5ad105..575f37a 100644
--- a/drivers/watchdog/da9055_wdt.c
+++ b/drivers/watchdog/da9055_wdt.c
@@ -174,7 +174,7 @@ static int da9055_wdt_probe(struct platform_device *pdev)
 		goto err;
 	}

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