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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-13 13:42:54 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-13 13:42:54 -0700
commit833e68340d108d88f4cb79b7d7223f6859d362ca (patch)
tree89f960431365ce2d47178c0620634b66979497fa
parentc55244137306b626bc64023fd7160985443205a7 (diff)
parentcce78da76601b64305c050f602767bf58cebcf5d (diff)
downloadlinux-833e68340d108d88f4cb79b7d7223f6859d362ca.tar.gz
Merge git://www.linux-watchdog.org/linux-watchdog
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() ...
-rw-r--r--Documentation/devicetree/bindings/gpio/men-a021-wdt.txt25
-rw-r--r--Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt5
-rw-r--r--Documentation/watchdog/watchdog-parameters.txt8
-rw-r--r--MAINTAINERS6
-rw-r--r--arch/arm/configs/spear13xx_defconfig1
-rw-r--r--arch/arm/mach-dove/include/mach/bridge-regs.h1
-rw-r--r--arch/arm/mach-kirkwood/include/mach/bridge-regs.h2
-rw-r--r--arch/arm/mach-orion5x/include/mach/bridge-regs.h3
-rw-r--r--drivers/watchdog/Kconfig34
-rw-r--r--drivers/watchdog/Makefile3
-rw-r--r--drivers/watchdog/at32ap700x_wdt.c17
-rw-r--r--drivers/watchdog/bcm2835_wdt.c189
-rw-r--r--drivers/watchdog/bcm63xx_wdt.c9
-rw-r--r--drivers/watchdog/cpwd.c4
-rw-r--r--drivers/watchdog/da9052_wdt.c4
-rw-r--r--drivers/watchdog/da9055_wdt.c4
-rw-r--r--drivers/watchdog/dw_wdt.c11
-rw-r--r--drivers/watchdog/hpwdt.c11
-rw-r--r--drivers/watchdog/imx2_wdt.c6
-rw-r--r--drivers/watchdog/jz4740_wdt.c2
-rw-r--r--drivers/watchdog/mena21_wdt.c270
-rw-r--r--drivers/watchdog/mpcore_wdt.c456
-rw-r--r--drivers/watchdog/mtx-1_wdt.c3
-rw-r--r--drivers/watchdog/mv64x60_wdt.c4
-rw-r--r--drivers/watchdog/nuc900_wdt.c50
-rw-r--r--drivers/watchdog/of_xilinx_wdt.c31
-rw-r--r--drivers/watchdog/orion_wdt.c7
-rw-r--r--drivers/watchdog/pnx4008_wdt.c7
-rw-r--r--drivers/watchdog/rc32434_wdt.c10
-rw-r--r--drivers/watchdog/riowd.c12
-rw-r--r--drivers/watchdog/s3c2410_wdt.c20
-rw-r--r--drivers/watchdog/shwdt.c18
-rw-r--r--drivers/watchdog/softdog.c1
-rw-r--r--drivers/watchdog/sp805_wdt.c7
-rw-r--r--drivers/watchdog/ts72xx_wdt.c67
-rw-r--r--drivers/watchdog/twl4030_wdt.c5
-rw-r--r--drivers/watchdog/watchdog_dev.c6
-rw-r--r--drivers/watchdog/wdrtas.c29
-rw-r--r--drivers/watchdog/wm831x_wdt.c21
39 files changed, 629 insertions, 740 deletions
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 00000000000..370dee3226d
--- /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] */
+ };
diff --git a/Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt b/Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt
index d209366b4a6..f801d71de1c 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>;
};
diff --git a/Documentation/watchdog/watchdog-parameters.txt b/Documentation/watchdog/watchdog-parameters.txt
index 04fddbacdbd..f9492fed410 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)
diff --git a/MAINTAINERS b/MAINTAINERS
index 705681e5a6b..4d43db62968 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 <johannes.thumshirn@men.de>
+L: linux-watchdog@vger.kernel.org
+S: Supported
+F: drivers/watchdog/mena21_wdt.c
+
METAG ARCHITECTURE
M: James Hogan <james.hogan@imgtec.com>
S: Supported
diff --git a/arch/arm/configs/spear13xx_defconfig b/arch/arm/configs/spear13xx_defconfig
index 1fdb82694ca..82eaa552ed1 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
diff --git a/arch/arm/mach-dove/include/mach/bridge-regs.h b/arch/arm/mach-dove/include/mach/bridge-regs.h
index 99f259e8cf3..5362df3df89 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)
diff --git a/arch/arm/mach-kirkwood/include/mach/bridge-regs.h b/arch/arm/mach-kirkwood/include/mach/bridge-regs.h
index d4cbe5e81bb..91242c944d7 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)
diff --git a/arch/arm/mach-orion5x/include/mach/bridge-regs.h b/arch/arm/mach-orion5x/include/mach/bridge-regs.h
index 461fd69a10a..f727d03f168 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)
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 7460d349df5..8519bc696a6 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
diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile
index ec268995b26..2f26a0b47dd 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
diff --git a/drivers/watchdog/at32ap700x_wdt.c b/drivers/watchdog/at32ap700x_wdt.c
index 7a715e3e682..b178e717ef0 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;
}
diff --git a/drivers/watchdog/bcm2835_wdt.c b/drivers/watchdog/bcm2835_wdt.c
new file mode 100644
index 00000000000..61566fc47f8
--- /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 <lkundrak@v3.sk>
+ *
+ * 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 <lkundrak@v3.sk>");
+MODULE_DESCRIPTION("Driver for Broadcom BCM2835 watchdog timer");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/bcm63xx_wdt.c b/drivers/watchdog/bcm63xx_wdt.c
index b2b80d4ac81..a14a58d9d11 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;
}
diff --git a/drivers/watchdog/cpwd.c b/drivers/watchdog/cpwd.c
index 70387582843..213225edd05 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++) {
diff --git a/drivers/watchdog/da9052_wdt.c b/drivers/watchdog/da9052_wdt.c
index 367445009c6..f09c54e9686 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);
diff --git a/drivers/watchdog/da9055_wdt.c b/drivers/watchdog/da9055_wdt.c
index f5ad10546fc..575f37a965a 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;
}
- dev_set_drvdata(&pdev->dev, driver_data);
+ platform_set_drvdata(pdev, driver_data);
ret = watchdog_register_device(&driver_data->wdt);
if (ret != 0)
@@ -187,7 +187,7 @@ err:
static int da9055_wdt_remove(struct platform_device *pdev)
{
- struct da9055_wdt_data *driver_data = dev_get_drvdata(&pdev->dev);
+ struct da9055_wdt_data *driver_data = platform_get_drvdata(pdev);
watchdog_unregister_device(&driver_data->wdt);
kref_put(&driver_data->kref, da9055_wdt_release_resources);
diff --git a/drivers/watchdog/dw_wdt.c b/drivers/watchdog/dw_wdt.c
index 20376698938..e621098bf66 100644
--- a/drivers/watchdog/dw_wdt.c
+++ b/drivers/watchdog/dw_wdt.c
@@ -154,8 +154,8 @@ static int dw_wdt_open(struct inode *inode, struct file *filp)
return nonseekable_open(inode, filp);
}
-ssize_t dw_wdt_write(struct file *filp, const char __user *buf, size_t len,
- loff_t *offset)
+static ssize_t dw_wdt_write(struct file *filp, const char __user *buf,
+ size_t len, loff_t *offset)
{
if (!len)
return 0;
@@ -305,13 +305,13 @@ static int dw_wdt_drv_probe(struct platform_device *pdev)
if (IS_ERR(dw_wdt.regs))
return PTR_ERR(dw_wdt.regs);
- dw_wdt.clk = clk_get(&pdev->dev, NULL);
+ dw_wdt.clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(dw_wdt.clk))
return PTR_ERR(dw_wdt.clk);
ret = clk_enable(dw_wdt.clk);
if (ret)
- goto out_put_clk;
+ return ret;
spin_lock_init(&dw_wdt.lock);
@@ -327,8 +327,6 @@ static int dw_wdt_drv_probe(struct platform_device *pdev)
out_disable_clk:
clk_disable(dw_wdt.clk);
-out_put_clk:
- clk_put(dw_wdt.clk);
return ret;
}
@@ -338,7 +336,6 @@ static int dw_wdt_drv_remove(struct platform_device *pdev)
misc_deregister(&dw_wdt_miscdev);
clk_disable(dw_wdt.clk);
- clk_put(dw_wdt.clk);
return 0;
}
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index 11796b9b864..de7e4f49722 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -39,7 +39,7 @@
#endif /* CONFIG_HPWDT_NMI_DECODING */
#include <asm/nmi.h>
-#define HPWDT_VERSION "1.3.1"
+#define HPWDT_VERSION "1.3.2"
#define SECS_TO_TICKS(secs) ((secs) * 1000 / 128)
#define TICKS_TO_SECS(ticks) ((ticks) * 128 / 1000)
#define HPWDT_MAX_TIMER TICKS_TO_SECS(65535)
@@ -148,6 +148,7 @@ struct cmn_registers {
static unsigned int hpwdt_nmi_decoding;
static unsigned int allow_kdump = 1;
static unsigned int is_icru;
+static unsigned int is_uefi;
static DEFINE_SPINLOCK(rom_lock);
static void *cru_rom_addr;
static struct cmn_registers cmn_regs;
@@ -484,7 +485,7 @@ static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs)
goto out;
spin_lock_irqsave(&rom_lock, rom_pl);
- if (!die_nmi_called && !is_icru)
+ if (!die_nmi_called && !is_icru && !is_uefi)
asminline_call(&cmn_regs, cru_rom_addr);
die_nmi_called = 1;
spin_unlock_irqrestore(&rom_lock, rom_pl);
@@ -492,7 +493,7 @@ static int hpwdt_pretimeout(unsigned int ulReason, struct pt_regs *regs)
if (allow_kdump)
hpwdt_stop();
- if (!is_icru) {
+ if (!is_icru && !is_uefi) {
if (cmn_regs.u1.ral == 0) {
panic("An NMI occurred, "
"but unable to determine source.\n");
@@ -679,6 +680,8 @@ static void dmi_find_icru(const struct dmi_header *dm, void *dummy)
smbios_proliant_ptr = (struct smbios_proliant_info *) dm;
if (smbios_proliant_ptr->misc_features & 0x01)
is_icru = 1;
+ if (smbios_proliant_ptr->misc_features & 0x408)
+ is_uefi = 1;
}
}
@@ -697,7 +700,7 @@ static int hpwdt_init_nmi_decoding(struct pci_dev *dev)
* the old cru detect code.
*/
dmi_walk(dmi_find_icru, NULL);
- if (!is_icru) {
+ if (!is_icru && !is_uefi) {
/*
* We need to map the ROM to get the CRU service.
diff --git a/drivers/watchdog/imx2_wdt.c b/drivers/watchdog/imx2_wdt.c
index 62946c2cb4f..693ac3f4de5 100644
--- a/drivers/watchdog/imx2_wdt.c
+++ b/drivers/watchdog/imx2_wdt.c
@@ -261,7 +261,7 @@ static int __init imx2_wdt_probe(struct platform_device *pdev)
if (IS_ERR(imx2_wdt.base))
return PTR_ERR(imx2_wdt.base);
- imx2_wdt.clk = clk_get(&pdev->dev, NULL);
+ imx2_wdt.clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(imx2_wdt.clk)) {
dev_err(&pdev->dev, "can't get Watchdog clock\n");
return PTR_ERR(imx2_wdt.clk);
@@ -286,7 +286,6 @@ static int __init imx2_wdt_probe(struct platform_device *pdev)
fail:
imx2_wdt_miscdev.parent = NULL;
- clk_put(imx2_wdt.clk);
return ret;
}
@@ -299,8 +298,7 @@ static int __exit imx2_wdt_remove(struct platform_device *pdev)
dev_crit(imx2_wdt_miscdev.parent,
"Device removed: Expect reboot!\n");
- } else
- clk_put(imx2_wdt.clk);
+ }
imx2_wdt_miscdev.parent = NULL;
return 0;
diff --git a/drivers/watchdog/jz4740_wdt.c b/drivers/watchdog/jz4740_wdt.c
index 1cb25f69a96..d1afdf684c1 100644
--- a/drivers/watchdog/jz4740_wdt.c
+++ b/drivers/watchdog/jz4740_wdt.c
@@ -177,7 +177,7 @@ static int jz4740_wdt_probe(struct platform_device *pdev)
goto err_out;
}
- drvdata->rtc_clk = clk_get(NULL, "rtc");
+ drvdata->rtc_clk = clk_get(&pdev->dev, "rtc");
if (IS_ERR(drvdata->rtc_clk)) {
dev_err(&pdev->dev, "cannot find RTC clock\n");
ret = PTR_ERR(drvdata->rtc_clk);
diff --git a/drivers/watchdog/mena21_wdt.c b/drivers/watchdog/mena21_wdt.c
new file mode 100644
index 00000000000..96dbba98057
--- /dev/null
+++ b/drivers/watchdog/mena21_wdt.c
@@ -0,0 +1,270 @@
+/*
+ * Watchdog driver for the A21 VME CPU Boards
+ *
+ * Copyright (C) 2013 MEN Mikro Elektronik Nuernberg GmbH
+ *
+ * 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
+ */
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/watchdog.h>
+#include <linux/uaccess.h>
+#include <linux/gpio.h>
+#include <linux/of_gpio.h>
+#include <linux/delay.h>
+#include <linux/bitops.h>
+
+#define NUM_GPIOS 6
+
+enum a21_wdt_gpios {
+ GPIO_WD_ENAB,
+ GPIO_WD_FAST,
+ GPIO_WD_TRIG,
+ GPIO_WD_RST0,
+ GPIO_WD_RST1,
+ GPIO_WD_RST2,
+};
+
+struct a21_wdt_drv {
+ struct watchdog_device wdt;
+ struct mutex lock;
+ unsigned gpios[NUM_GPIOS];
+};
+
+static bool nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+
+static unsigned int a21_wdt_get_bootstatus(struct a21_wdt_drv *drv)
+{
+ int reset = 0;
+
+ reset |= gpio_get_value(drv->gpios[GPIO_WD_RST0]) ? (1 << 0) : 0;
+ reset |= gpio_get_value(drv->gpios[GPIO_WD_RST1]) ? (1 << 1) : 0;
+ reset |= gpio_get_value(drv->gpios[GPIO_WD_RST2]) ? (1 << 2) : 0;
+
+ return reset;
+}
+
+static int a21_wdt_start(struct watchdog_device *wdt)
+{
+ struct a21_wdt_drv *drv = watchdog_get_drvdata(wdt);
+
+ mutex_lock(&drv->lock);
+
+ gpio_set_value(drv->gpios[GPIO_WD_ENAB], 1);
+
+ mutex_unlock(&drv->lock);
+
+ return 0;
+}
+
+static int a21_wdt_stop(struct watchdog_device *wdt)
+{
+ struct a21_wdt_drv *drv = watchdog_get_drvdata(wdt);
+
+ mutex_lock(&drv->lock);
+
+ gpio_set_value(drv->gpios[GPIO_WD_ENAB], 0);
+
+ mutex_unlock(&drv->lock);
+
+ return 0;
+}
+
+static int a21_wdt_ping(struct watchdog_device *wdt)
+{
+ struct a21_wdt_drv *drv = watchdog_get_drvdata(wdt);
+
+ mutex_lock(&drv->lock);
+
+ gpio_set_value(drv->gpios[GPIO_WD_TRIG], 0);
+ ndelay(10);
+ gpio_set_value(drv->gpios[GPIO_WD_TRIG], 1);
+
+ mutex_unlock(&drv->lock);
+
+ return 0;
+}
+
+static int a21_wdt_set_timeout(struct watchdog_device *wdt,
+ unsigned int timeout)
+{
+ struct a21_wdt_drv *drv = watchdog_get_drvdata(wdt);
+
+ if (timeout != 1 && timeout != 30) {
+ dev_err(wdt->dev, "Only 1 and 30 allowed as timeout\n");
+ return -EINVAL;
+ }
+
+ if (timeout == 30 && wdt->timeout == 1) {
+ dev_err(wdt->dev,
+ "Transition from fast to slow mode not allowed\n");
+ return -EINVAL;
+ }
+
+ mutex_lock(&drv->lock);
+
+ if (timeout == 1)
+ gpio_set_value(drv->gpios[GPIO_WD_FAST], 1);
+ else
+ gpio_set_value(drv->gpios[GPIO_WD_FAST], 0);
+
+ wdt->timeout = timeout;
+
+ mutex_unlock(&drv->lock);
+
+ return 0;
+}
+
+static const struct watchdog_info a21_wdt_info = {
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
+ .identity = "MEN A21 Watchdog",
+};
+
+static const struct watchdog_ops a21_wdt_ops = {
+ .owner = THIS_MODULE,
+ .start = a21_wdt_start,
+ .stop = a21_wdt_stop,
+ .ping = a21_wdt_ping,
+ .set_timeout = a21_wdt_set_timeout,
+};
+
+static struct watchdog_device a21_wdt = {
+ .info = &a21_wdt_info,
+ .ops = &a21_wdt_ops,
+ .min_timeout = 1,
+ .max_timeout = 30,
+};
+
+static int a21_wdt_probe(struct platform_device *pdev)
+{
+ struct device_node *node;
+ struct a21_wdt_drv *drv;
+ unsigned int reset = 0;
+ int num_gpios;
+ int ret;
+ int i;
+
+ drv = devm_kzalloc(&pdev->dev, sizeof(struct a21_wdt_drv), GFP_KERNEL);
+ if (!drv)
+ return -ENOMEM;
+
+ /* Fill GPIO pin array */
+ node = pdev->dev.of_node;
+
+ num_gpios = of_gpio_count(node);
+ if (num_gpios != NUM_GPIOS) {
+ dev_err(&pdev->dev, "gpios DT property wrong, got %d want %d",
+ num_gpios, NUM_GPIOS);
+ return -ENODEV;
+ }
+
+ for (i = 0; i < num_gpios; i++) {
+ int val;
+
+ val = of_get_gpio(node, i);
+ if (val < 0)
+ return val;
+
+ drv->gpios[i] = val;
+ }
+
+ /* Request the used GPIOs */
+ for (i = 0; i < num_gpios; i++) {
+ ret = devm_gpio_request(&pdev->dev, drv->gpios[i],
+ "MEN A21 Watchdog");
+ if (ret)
+ return ret;
+
+ if (i < GPIO_WD_RST0)
+ ret = gpio_direction_output(drv->gpios[i],
+ gpio_get_value(drv->gpios[i]));
+ else /* GPIO_WD_RST[0..2] are inputs */
+ ret = gpio_direction_input(drv->gpios[i]);
+ if (ret)
+ return ret;
+ }
+
+ mutex_init(&drv->lock);
+ watchdog_init_timeout(&a21_wdt, 30, &pdev->dev);
+ watchdog_set_nowayout(&a21_wdt, nowayout);
+ watchdog_set_drvdata(&a21_wdt, drv);
+
+ reset = a21_wdt_get_bootstatus(drv);
+ if (reset == 2)
+ a21_wdt.bootstatus |= WDIOF_EXTERN1;
+ else if (reset == 4)
+ a21_wdt.bootstatus |= WDIOF_CARDRESET;
+ else if (reset == 5)
+ a21_wdt.bootstatus |= WDIOF_POWERUNDER;
+ else if (reset == 7)
+ a21_wdt.bootstatus |= WDIOF_EXTERN2;
+
+ ret = watchdog_register_device(&a21_wdt);
+ if (ret) {
+ dev_err(&pdev->dev, "Cannot register watchdog device\n");
+ goto err_register_wd;
+ }
+
+ dev_set_drvdata(&pdev->dev, drv);
+
+ dev_info(&pdev->dev, "MEN A21 watchdog timer driver enabled\n");
+
+ return 0;
+
+err_register_wd:
+ mutex_destroy(&drv->lock);
+
+ return ret;
+}
+
+static int a21_wdt_remove(struct platform_device *pdev)
+{
+ struct a21_wdt_drv *drv = dev_get_drvdata(&pdev->dev);
+
+ dev_warn(&pdev->dev,
+ "Unregistering A21 watchdog driver, board may reboot\n");
+
+ watchdog_unregister_device(&drv->wdt);
+
+ mutex_destroy(&drv->lock);
+
+ return 0;
+}
+
+static void a21_wdt_shutdown(struct platform_device *pdev)
+{
+ struct a21_wdt_drv *drv = dev_get_drvdata(&pdev->dev);
+
+ gpio_set_value(drv->gpios[GPIO_WD_ENAB], 0);
+}
+
+static const struct of_device_id a21_wdt_ids[] = {
+ { .compatible = "men,a021-wdt" },
+ { },
+};
+
+static struct platform_driver a21_wdt_driver = {
+ .probe = a21_wdt_probe,
+ .remove = a21_wdt_remove,
+ .shutdown = a21_wdt_shutdown,
+ .driver = {
+ .name = "a21-watchdog",
+ .of_match_table = a21_wdt_ids,
+ },
+};
+
+module_platform_driver(a21_wdt_driver);
+
+MODULE_AUTHOR("MEN Mikro Elektronik");
+MODULE_DESCRIPTION("MEN A21 Watchdog");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:a21-watchdog");
diff --git a/drivers/watchdog/mpcore_wdt.c b/drivers/watchdog/mpcore_wdt.c
deleted file mode 100644
index 233cfadcb21..00000000000
--- a/drivers/watchdog/mpcore_wdt.c
+++ /dev/null
@@ -1,456 +0,0 @@
-/*
- * Watchdog driver for the mpcore watchdog timer
- *
- * (c) Copyright 2004 ARM Limited
- *
- * Based on the SoftDog driver:
- * (c) Copyright 1996 Alan Cox <alan@lxorguk.ukuu.org.uk>,
- * All Rights Reserved.
- *
- * 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.
- *
- * Neither Alan Cox nor CymruNet Ltd. admit liability nor provide
- * warranty for any of this software. This material is provided
- * "AS-IS" and at no charge.
- *
- * (c) Copyright 1995 Alan Cox <alan@lxorguk.ukuu.org.uk>
- *
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/miscdevice.h>
-#include <linux/watchdog.h>
-#include <linux/fs.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/platform_device.h>
-#include <linux/uaccess.h>
-#include <linux/slab.h>
-#include <linux/io.h>
-
-#include <asm/smp_twd.h>
-
-struct mpcore_wdt {
- unsigned long timer_alive;
- struct device *dev;
- void __iomem *base;
- int irq;
- unsigned int perturb;
- char expect_close;
-};
-
-static struct platform_device *mpcore_wdt_pdev;
-static DEFINE_SPINLOCK(wdt_lock);
-
-#define TIMER_MARGIN 60
-static int mpcore_margin = TIMER_MARGIN;
-module_param(mpcore_margin, int, 0);
-MODULE_PARM_DESC(mpcore_margin,
- "MPcore timer margin in seconds. (0 < mpcore_margin < 65536, default="
- __MODULE_STRING(TIMER_MARGIN) ")");
-
-static bool nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, bool, 0);
-MODULE_PARM_DESC(nowayout,
- "Watchdog cannot be stopped once started (default="
- __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
-
-#define ONLY_TESTING 0
-static int mpcore_noboot = ONLY_TESTING;
-module_param(mpcore_noboot, int, 0);
-MODULE_PARM_DESC(mpcore_noboot, "MPcore watchdog action, "
- "set to 1 to ignore reboots, 0 to reboot (default="
- __MODULE_STRING(ONLY_TESTING) ")");
-
-/*
- * This is the interrupt handler. Note that we only use this
- * in testing mode, so don't actually do a reboot here.
- */
-static irqreturn_t mpcore_wdt_fire(int irq, void *arg)
-{
- struct mpcore_wdt *wdt = arg;
-
- /* Check it really was our interrupt */
- if (readl(wdt->base + TWD_WDOG_INTSTAT)) {
- dev_crit(wdt->dev, "Triggered - Reboot ignored\n");
- /* Clear the interrupt on the watchdog */
- writel(1, wdt->base + TWD_WDOG_INTSTAT);
- return IRQ_HANDLED;
- }
- return IRQ_NONE;
-}
-
-/*
- * mpcore_wdt_keepalive - reload the timer
- *
- * Note that the spec says a DIFFERENT value must be written to the reload
- * register each time. The "perturb" variable deals with this by adding 1
- * to the count every other time the function is called.
- */
-static void mpcore_wdt_keepalive(struct mpcore_wdt *wdt)
-{
- unsigned long count;
-
- spin_lock(&wdt_lock);
- /* Assume prescale is set to 256 */
- count = __raw_readl(wdt->base + TWD_WDOG_COUNTER);
- count = (0xFFFFFFFFU - count) * (HZ / 5);
- count = (count / 256) * mpcore_margin;
-
- /* Reload the counter */
- writel(count + wdt->perturb, wdt->base + TWD_WDOG_LOAD);
- wdt->perturb = wdt->perturb ? 0 : 1;
- spin_unlock(&wdt_lock);
-}
-
-static void mpcore_wdt_stop(struct mpcore_wdt *wdt)
-{
- spin_lock(&wdt_lock);
- writel(0x12345678, wdt->base + TWD_WDOG_DISABLE);
- writel(0x87654321, wdt->base + TWD_WDOG_DISABLE);
- writel(0x0, wdt->base + TWD_WDOG_CONTROL);
- spin_unlock(&wdt_lock);
-}
-
-static void mpcore_wdt_start(struct mpcore_wdt *wdt)
-{
- dev_info(wdt->dev, "enabling watchdog\n");
-
- /* This loads the count register but does NOT start the count yet */
- mpcore_wdt_keepalive(wdt);
-
- if (mpcore_noboot) {
- /* Enable watchdog - prescale=256, watchdog mode=0, enable=1 */
- writel(0x0000FF01, wdt->base + TWD_WDOG_CONTROL);
- } else {
- /* Enable watchdog - prescale=256, watchdog mode=1, enable=1 */
- writel(0x0000FF09, wdt->base + TWD_WDOG_CONTROL);
- }
-}
-
-static int mpcore_wdt_set_heartbeat(int t)
-{
- if (t < 0x0001 || t > 0xFFFF)
- return -EINVAL;
-
- mpcore_margin = t;
- return 0;
-}
-
-/*
- * /dev/watchdog handling
- */
-static int mpcore_wdt_open(struct inode *inode, struct file *file)
-{
- struct mpcore_wdt *wdt = platform_get_drvdata(mpcore_wdt_pdev);
-
- if (test_and_set_bit(0, &wdt->timer_alive))
- return -EBUSY;
-
- if (nowayout)
- __module_get(THIS_MODULE);
-
- file->private_data = wdt;
-
- /*
- * Activate timer
- */
- mpcore_wdt_start(wdt);
-
- return nonseekable_open(inode, file);
-}
-
-static int mpcore_wdt_release(struct inode *inode, struct file *file)
-{
- struct mpcore_wdt *wdt = file->private_data;
-
- /*
- * Shut off the timer.
- * Lock it in if it's a module and we set nowayout
- */
- if (wdt->expect_close == 42)
- mpcore_wdt_stop(wdt);
- else {
- dev_crit(wdt->dev,
- "unexpected close, not stopping watchdog!\n");
- mpcore_wdt_keepalive(wdt);
- }
- clear_bit(0, &wdt->timer_alive);
- wdt->expect_close = 0;
- return 0;
-}
-
-static ssize_t mpcore_wdt_write(struct file *file, const char *data,
- size_t len, loff_t *ppos)
-{
- struct mpcore_wdt *wdt = file->private_data;
-
- /*
- * Refresh the timer.
- */
- if (len) {
- if (!nowayout) {
- size_t i;
-
- /* In case it was set long ago */
- wdt->expect_close = 0;
-
- for (i = 0; i != len; i++) {
- char c;
-
- if (get_user(c, data + i))
- return -EFAULT;
- if (c == 'V')
- wdt->expect_close = 42;
- }
- }
- mpcore_wdt_keepalive(wdt);
- }
- return len;
-}
-
-static const struct watchdog_info ident = {
- .options = WDIOF_SETTIMEOUT |
- WDIOF_KEEPALIVEPING |
- WDIOF_MAGICCLOSE,
- .identity = "MPcore Watchdog",
-};
-
-static long mpcore_wdt_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- struct mpcore_wdt *wdt = file->private_data;
- int ret;
- union {
- struct watchdog_info ident;
- int i;
- } uarg;
-
- if (_IOC_DIR(cmd) && _IOC_SIZE(cmd) > sizeof(uarg))
- return -ENOTTY;
-
- if (_IOC_DIR(cmd) & _IOC_WRITE) {
- ret = copy_from_user(&uarg, (void __user *)arg, _IOC_SIZE(cmd));
- if (ret)
- return -EFAULT;
- }
-
- switch (cmd) {
- case WDIOC_GETSUPPORT:
- uarg.ident = ident;
- ret = 0;
- break;
-
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- uarg.i = 0;
- ret = 0;
- break;
-
- case WDIOC_SETOPTIONS:
- ret = -EINVAL;
- if (uarg.i & WDIOS_DISABLECARD) {
- mpcore_wdt_stop(wdt);
- ret = 0;
- }
- if (uarg.i & WDIOS_ENABLECARD) {
- mpcore_wdt_start(wdt);
- ret = 0;
- }
- break;
-
- case WDIOC_KEEPALIVE:
- mpcore_wdt_keepalive(wdt);
- ret = 0;
- break;
-
- case WDIOC_SETTIMEOUT:
- ret = mpcore_wdt_set_heartbeat(uarg.i);
- if (ret)
- break;
-
- mpcore_wdt_keepalive(wdt);
- /* Fall */
- case WDIOC_GETTIMEOUT:
- uarg.i = mpcore_margin;
- ret = 0;
- break;
-
- default:
- return -ENOTTY;
- }
-
- if (ret == 0 && _IOC_DIR(cmd) & _IOC_READ) {
- ret = copy_to_user((void __user *)arg, &uarg, _IOC_SIZE(cmd));
- if (ret)
- ret = -EFAULT;
- }
- return ret;
-}
-
-/*
- * System shutdown handler. Turn off the watchdog if we're
- * restarting or halting the system.
- */
-static void mpcore_wdt_shutdown(struct platform_device *pdev)
-{
- struct mpcore_wdt *wdt = platform_get_drvdata(pdev);
-
- if (system_state == SYSTEM_RESTART || system_state == SYSTEM_HALT)
- mpcore_wdt_stop(wdt);
-}
-
-/*
- * Kernel Interfaces
- */
-static const struct file_operations mpcore_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = mpcore_wdt_write,
- .unlocked_ioctl = mpcore_wdt_ioctl,
- .open = mpcore_wdt_open,
- .release = mpcore_wdt_release,
-};
-
-static struct miscdevice mpcore_wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &mpcore_wdt_fops,
-};
-
-static int mpcore_wdt_probe(struct platform_device *pdev)
-{
- struct mpcore_wdt *wdt;
- struct resource *res;
- int ret;
-
- /* We only accept one device, and it must have an id of -1 */
- if (pdev->id != -1)
- return -ENODEV;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- wdt = devm_kzalloc(&pdev->dev, sizeof(struct mpcore_wdt), GFP_KERNEL);
- if (!wdt)
- return -ENOMEM;
-
- wdt->dev = &pdev->dev;
- wdt->irq = platform_get_irq(pdev, 0);
- if (wdt->irq >= 0) {
- ret = devm_request_irq(wdt->dev, wdt->irq, mpcore_wdt_fire, 0,
- "mpcore_wdt", wdt);
- if (ret) {
- dev_err(wdt->dev,
- "cannot register IRQ%d for watchdog\n",
- wdt->irq);
- return ret;
- }
- }
-
- wdt->base = devm_ioremap(wdt->dev, res->start, resource_size(res));
- if (!wdt->base)
- return -ENOMEM;
-
- mpcore_wdt_miscdev.parent = &pdev->dev;
- ret = misc_register(&mpcore_wdt_miscdev);
- if (ret) {
- dev_err(wdt->dev,
- "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
- return ret;
- }
-
- mpcore_wdt_stop(wdt);
- platform_set_drvdata(pdev, wdt);
- mpcore_wdt_pdev = pdev;
-
- return 0;
-}
-
-static int mpcore_wdt_remove(struct platform_device *pdev)
-{
- platform_set_drvdata(pdev, NULL);
-
- misc_deregister(&mpcore_wdt_miscdev);
-
- mpcore_wdt_pdev = NULL;
-
- return 0;
-}
-
-#ifdef CONFIG_PM
-static int mpcore_wdt_suspend(struct platform_device *pdev, pm_message_t msg)
-{
- struct mpcore_wdt *wdt = platform_get_drvdata(pdev);
- mpcore_wdt_stop(wdt); /* Turn the WDT off */
- return 0;
-}
-
-static int mpcore_wdt_resume(struct platform_device *pdev)
-{
- struct mpcore_wdt *wdt = platform_get_drvdata(pdev);
- /* re-activate timer */
- if (test_bit(0, &wdt->timer_alive))
- mpcore_wdt_start(wdt);
- return 0;
-}
-#else
-#define mpcore_wdt_suspend NULL
-#define mpcore_wdt_resume NULL
-#endif
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:mpcore_wdt");
-
-static struct platform_driver mpcore_wdt_driver = {
- .probe = mpcore_wdt_probe,
- .remove = mpcore_wdt_remove,
- .suspend = mpcore_wdt_suspend,
- .resume = mpcore_wdt_resume,
- .shutdown = mpcore_wdt_shutdown,
- .driver = {
- .owner = THIS_MODULE,
- .name = "mpcore_wdt",
- },
-};
-
-static int __init mpcore_wdt_init(void)
-{
- /*
- * Check that the margin value is within it's range;
- * if not reset to the default
- */
- if (mpcore_wdt_set_heartbeat(mpcore_margin)) {
- mpcore_wdt_set_heartbeat(TIMER_MARGIN);
- pr_info("mpcore_margin value must be 0 < mpcore_margin < 65536, using %d\n",
- TIMER_MARGIN);
- }
-
- pr_info("MPcore Watchdog Timer: 0.1. mpcore_noboot=%d mpcore_margin=%d sec (nowayout= %d)\n",
- mpcore_noboot, mpcore_margin, nowayout);
-
- return platform_driver_register(&mpcore_wdt_driver);
-}
-
-static void __exit mpcore_wdt_exit(void)
-{
- platform_driver_unregister(&mpcore_wdt_driver);
-}
-
-module_init(mpcore_wdt_init);
-module_exit(mpcore_wdt_exit);
-
-MODULE_AUTHOR("ARM Limited");
-MODULE_DESCRIPTION("MPcore Watchdog Device Driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/mtx-1_wdt.c b/drivers/watchdog/mtx-1_wdt.c
index 14dab6ff87a..b4341110ad4 100644
--- a/drivers/watchdog/mtx-1_wdt.c
+++ b/drivers/watchdog/mtx-1_wdt.c
@@ -209,7 +209,7 @@ static int mtx1_wdt_probe(struct platform_device *pdev)
int ret;
mtx1_wdt_device.gpio = pdev->resource[0].start;
- ret = gpio_request_one(mtx1_wdt_device.gpio,
+ ret = devm_gpio_request_one(&pdev->dev, mtx1_wdt_device.gpio,
GPIOF_OUT_INIT_HIGH, "mtx1-wdt");
if (ret < 0) {
dev_err(&pdev->dev, "failed to request gpio");
@@ -241,7 +241,6 @@ static int mtx1_wdt_remove(struct platform_device *pdev)
wait_for_completion(&mtx1_wdt_device.stop);
}
- gpio_free(mtx1_wdt_device.gpio);
misc_deregister(&mtx1_wdt_misc);
return 0;
}
diff --git a/drivers/watchdog/mv64x60_wdt.c b/drivers/watchdog/mv64x60_wdt.c
index c7fb878ca49..e4cf9801926 100644
--- a/drivers/watchdog/mv64x60_wdt.c
+++ b/drivers/watchdog/mv64x60_wdt.c
@@ -276,7 +276,7 @@ static int mv64x60_wdt_probe(struct platform_device *dev)
if (!r)
return -ENODEV;
- mv64x60_wdt_regs = ioremap(r->start, resource_size(r));
+ mv64x60_wdt_regs = devm_ioremap(&dev->dev, r->start, resource_size(r));
if (mv64x60_wdt_regs == NULL)
return -ENOMEM;
@@ -293,8 +293,6 @@ static int mv64x60_wdt_remove(struct platform_device *dev)
mv64x60_wdt_handler_disable();
- iounmap(mv64x60_wdt_regs);
-
return 0;
}
diff --git a/drivers/watchdog/nuc900_wdt.c b/drivers/watchdog/nuc900_wdt.c
index 04c45a10299..e2b6d2cf5c9 100644
--- a/drivers/watchdog/nuc900_wdt.c
+++ b/drivers/watchdog/nuc900_wdt.c
@@ -61,7 +61,6 @@ MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started "
"(default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
struct nuc900_wdt {
- struct resource *res;
struct clk *wdt_clock;
struct platform_device *pdev;
void __iomem *wdt_base;
@@ -244,9 +243,11 @@ static struct miscdevice nuc900wdt_miscdev = {
static int nuc900wdt_probe(struct platform_device *pdev)
{
+ struct resource *res;
int ret = 0;
- nuc900_wdt = kzalloc(sizeof(struct nuc900_wdt), GFP_KERNEL);
+ nuc900_wdt = devm_kzalloc(&pdev->dev, sizeof(*nuc900_wdt),
+ GFP_KERNEL);
if (!nuc900_wdt)
return -ENOMEM;
@@ -254,33 +255,20 @@ static int nuc900wdt_probe(struct platform_device *pdev)
spin_lock_init(&nuc900_wdt->wdt_lock);
- nuc900_wdt->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (nuc900_wdt->res == NULL) {
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
dev_err(&pdev->dev, "no memory resource specified\n");
- ret = -ENOENT;
- goto err_get;
+ return -ENOENT;
}
- if (!request_mem_region(nuc900_wdt->res->start,
- resource_size(nuc900_wdt->res), pdev->name)) {
- dev_err(&pdev->dev, "failed to get memory region\n");
- ret = -ENOENT;
- goto err_get;
- }
-
- nuc900_wdt->wdt_base = ioremap(nuc900_wdt->res->start,
- resource_size(nuc900_wdt->res));
- if (nuc900_wdt->wdt_base == NULL) {
- dev_err(&pdev->dev, "failed to ioremap() region\n");
- ret = -EINVAL;
- goto err_req;
- }
+ nuc900_wdt->wdt_base = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(nuc900_wdt->wdt_base))
+ return PTR_ERR(nuc900_wdt->wdt_base);
- nuc900_wdt->wdt_clock = clk_get(&pdev->dev, NULL);
+ nuc900_wdt->wdt_clock = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(nuc900_wdt->wdt_clock)) {
dev_err(&pdev->dev, "failed to find watchdog clock source\n");
- ret = PTR_ERR(nuc900_wdt->wdt_clock);
- goto err_map;
+ return PTR_ERR(nuc900_wdt->wdt_clock);
}
clk_enable(nuc900_wdt->wdt_clock);
@@ -298,14 +286,6 @@ static int nuc900wdt_probe(struct platform_device *pdev)
err_clk:
clk_disable(nuc900_wdt->wdt_clock);
- clk_put(nuc900_wdt->wdt_clock);
-err_map:
- iounmap(nuc900_wdt->wdt_base);
-err_req:
- release_mem_region(nuc900_wdt->res->start,
- resource_size(nuc900_wdt->res));
-err_get:
- kfree(nuc900_wdt);
return ret;
}
@@ -314,14 +294,6 @@ static int nuc900wdt_remove(struct platform_device *pdev)
misc_deregister(&nuc900wdt_miscdev);
clk_disable(nuc900_wdt->wdt_clock);
- clk_put(nuc900_wdt->wdt_clock);
-
- iounmap(nuc900_wdt->wdt_base);
-
- release_mem_region(nuc900_wdt->res->start,
- resource_size(nuc900_wdt->res));
-
- kfree(nuc900_wdt);
return 0;
}
diff --git a/drivers/watchdog/of_xilinx_wdt.c b/drivers/watchdog/of_xilinx_wdt.c
index 2761ddb0850..4dd281f2c33 100644
--- a/drivers/watchdog/of_xilinx_wdt.c
+++ b/drivers/watchdog/of_xilinx_wdt.c
@@ -1,23 +1,13 @@
/*
-* of_xilinx_wdt.c 1.01 A Watchdog Device Driver for Xilinx xps_timebase_wdt
-*
-* (C) Copyright 2011 (Alejandro Cabrera <aldaya@gmail.com>)
-*
-* -----------------------
-*
-* 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.
-*
-* -----------------------
-* 30-May-2011 Alejandro Cabrera <aldaya@gmail.com>
-* - If "xlnx,wdt-enable-once" wasn't found on device tree the
-* module will use CONFIG_WATCHDOG_NOWAYOUT
-* - If the device tree parameters ("clock-frequency" and
-* "xlnx,wdt-interval") wasn't found the driver won't
-* know the wdt reset interval
-*/
+ * Watchdog Device Driver for Xilinx axi/xps_timebase_wdt
+ *
+ * (C) Copyright 2011 (Alejandro Cabrera <aldaya@gmail.com>)
+ *
+ * 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.
+ */
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
@@ -394,6 +384,7 @@ static int xwdt_remove(struct platform_device *dev)
/* Match table for of_platform binding */
static struct of_device_id xwdt_of_match[] = {
+ { .compatible = "xlnx,xps-timebase-wdt-1.00.a", },
{ .compatible = "xlnx,xps-timebase-wdt-1.01.a", },
{},
};
@@ -413,5 +404,5 @@ module_platform_driver(xwdt_driver);
MODULE_AUTHOR("Alejandro Cabrera <aldaya@gmail.com>");
MODULE_DESCRIPTION("Xilinx Watchdog driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c
index da577980d39..4ea5fcccac0 100644
--- a/drivers/watchdog/orion_wdt.c
+++ b/drivers/watchdog/orion_wdt.c
@@ -38,6 +38,9 @@
#define WDT_IN_USE 0
#define WDT_OK_TO_CLOSE 1
+#define WDT_RESET_OUT_EN BIT(1)
+#define WDT_INT_REQ BIT(3)
+
static bool nowayout = WATCHDOG_NOWAYOUT;
static int heartbeat = -1; /* module parameter (seconds) */
static unsigned int wdt_max_duration; /* (seconds) */
@@ -67,9 +70,7 @@ static int orion_wdt_start(struct watchdog_device *wdt_dev)
writel(wdt_tclk * wdt_dev->timeout, wdt_reg + WDT_VAL);
/* Clear watchdog timer interrupt */
- reg = readl(BRIDGE_CAUSE);
- reg &= ~WDT_INT_REQ;
- writel(reg, BRIDGE_CAUSE);
+ writel(~WDT_INT_REQ, BRIDGE_CAUSE);
/* Enable watchdog timer */
reg = readl(wdt_reg + TIMER_CTRL);
diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
index a3684a30eb6..b30bd430f59 100644
--- a/drivers/watchdog/pnx4008_wdt.c
+++ b/drivers/watchdog/pnx4008_wdt.c
@@ -159,13 +159,13 @@ static int pnx4008_wdt_probe(struct platform_device *pdev)
if (IS_ERR(wdt_base))
return PTR_ERR(wdt_base);
- wdt_clk = clk_get(&pdev->dev, NULL);
+ wdt_clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(wdt_clk))
return PTR_ERR(wdt_clk);
ret = clk_enable(wdt_clk);
if (ret)
- goto out;
+ return ret;
pnx4008_wdd.bootstatus = (readl(WDTIM_RES(wdt_base)) & WDOG_RESET) ?
WDIOF_CARDRESET : 0;
@@ -186,8 +186,6 @@ static int pnx4008_wdt_probe(struct platform_device *pdev)
disable_clk:
clk_disable(wdt_clk);
-out:
- clk_put(wdt_clk);
return ret;
}
@@ -196,7 +194,6 @@ static int pnx4008_wdt_remove(struct platform_device *pdev)
watchdog_unregister_device(&pnx4008_wdd);
clk_disable(wdt_clk);
- clk_put(wdt_clk);
return 0;
}
diff --git a/drivers/watchdog/rc32434_wdt.c b/drivers/watchdog/rc32434_wdt.c
index f78bc008cbb..9cf6bc7a234 100644
--- a/drivers/watchdog/rc32434_wdt.c
+++ b/drivers/watchdog/rc32434_wdt.c
@@ -32,6 +32,7 @@
#include <linux/platform_device.h> /* For platform_driver framework */
#include <linux/spinlock.h> /* For spin_lock/spin_unlock/... */
#include <linux/uaccess.h> /* For copy_to_user/put_user/... */
+#include <linux/io.h> /* For devm_ioremap_nocache */
#include <asm/mach-rc32434/integ.h> /* For the Watchdog registers */
@@ -271,7 +272,7 @@ static int rc32434_wdt_probe(struct platform_device *pdev)
return -ENODEV;
}
- wdt_reg = ioremap_nocache(r->start, resource_size(r));
+ wdt_reg = devm_ioremap_nocache(&pdev->dev, r->start, resource_size(r));
if (!wdt_reg) {
pr_err("failed to remap I/O resources\n");
return -ENXIO;
@@ -293,23 +294,18 @@ static int rc32434_wdt_probe(struct platform_device *pdev)
ret = misc_register(&rc32434_wdt_miscdev);
if (ret < 0) {
pr_err("failed to register watchdog device\n");
- goto unmap;
+ return ret;
}
pr_info("Watchdog Timer version " VERSION ", timer margin: %d sec\n",
timeout);
return 0;
-
-unmap:
- iounmap(wdt_reg);
- return ret;
}
static int rc32434_wdt_remove(struct platform_device *pdev)
{
misc_deregister(&rc32434_wdt_miscdev);
- iounmap(wdt_reg);
return 0;
}
diff --git a/drivers/watchdog/riowd.c b/drivers/watchdog/riowd.c
index 0040451aec1..3dd8ed28adc 100644
--- a/drivers/watchdog/riowd.c
+++ b/drivers/watchdog/riowd.c
@@ -183,7 +183,7 @@ static int riowd_probe(struct platform_device *op)
goto out;
err = -ENOMEM;
- p = kzalloc(sizeof(*p), GFP_KERNEL);
+ p = devm_kzalloc(&op->dev, sizeof(*p), GFP_KERNEL);
if (!p)
goto out;
@@ -192,7 +192,7 @@ static int riowd_probe(struct platform_device *op)
p->regs = of_ioremap(&op->resource[0], 0, 2, DRIVER_NAME);
if (!p->regs) {
pr_err("Cannot map registers\n");
- goto out_free;
+ goto out;
}
/* Make miscdev useable right away */
riowd_device = p;
@@ -206,27 +206,23 @@ static int riowd_probe(struct platform_device *op)
pr_info("Hardware watchdog [%i minutes], regs at %p\n",
riowd_timeout, p->regs);
- dev_set_drvdata(&op->dev, p);
+ platform_set_drvdata(op, p);
return 0;
out_iounmap:
riowd_device = NULL;
of_iounmap(&op->resource[0], p->regs, 2);
-out_free:
- kfree(p);
-
out:
return err;
}
static int riowd_remove(struct platform_device *op)
{
- struct riowd *p = dev_get_drvdata(&op->dev);
+ struct riowd *p = platform_get_drvdata(op);
misc_deregister(&riowd_miscdev);
of_iounmap(&op->resource[0], p->regs, 2);
- kfree(p);
return 0;
}
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index 3a9f6961db2..6a22cf5d35b 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -358,7 +358,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
ret = s3c2410wdt_cpufreq_register();
if (ret < 0) {
- pr_err("failed to register cpufreq\n");
+ dev_err(dev, "failed to register cpufreq\n");
goto err_clk;
}
@@ -448,12 +448,12 @@ static void s3c2410wdt_shutdown(struct platform_device *dev)
s3c2410wdt_stop(&s3c2410_wdd);
}
-#ifdef CONFIG_PM
+#ifdef CONFIG_PM_SLEEP
static unsigned long wtcon_save;
static unsigned long wtdat_save;
-static int s3c2410wdt_suspend(struct platform_device *dev, pm_message_t state)
+static int s3c2410wdt_suspend(struct device *dev)
{
/* Save watchdog state, and turn it off. */
wtcon_save = readl(wdt_base + S3C2410_WTCON);
@@ -465,7 +465,7 @@ static int s3c2410wdt_suspend(struct platform_device *dev, pm_message_t state)
return 0;
}
-static int s3c2410wdt_resume(struct platform_device *dev)
+static int s3c2410wdt_resume(struct device *dev)
{
/* Restore watchdog state. */
@@ -473,16 +473,15 @@ static int s3c2410wdt_resume(struct platform_device *dev)
writel(wtdat_save, wdt_base + S3C2410_WTCNT); /* Reset count */
writel(wtcon_save, wdt_base + S3C2410_WTCON);
- pr_info("watchdog %sabled\n",
+ dev_info(dev, "watchdog %sabled\n",
(wtcon_save & S3C2410_WTCON_ENABLE) ? "en" : "dis");
return 0;
}
+#endif
-#else
-#define s3c2410wdt_suspend NULL
-#define s3c2410wdt_resume NULL
-#endif /* CONFIG_PM */
+static SIMPLE_DEV_PM_OPS(s3c2410wdt_pm_ops, s3c2410wdt_suspend,
+ s3c2410wdt_resume);
#ifdef CONFIG_OF
static const struct of_device_id s3c2410_wdt_match[] = {
@@ -496,11 +495,10 @@ static struct platform_driver s3c2410wdt_driver = {
.probe = s3c2410wdt_probe,
.remove = s3c2410wdt_remove,
.shutdown = s3c2410wdt_shutdown,
- .suspend = s3c2410wdt_suspend,
- .resume = s3c2410wdt_resume,
.driver = {
.owner = THIS_MODULE,
.name = "s3c2410-wdt",
+ .pm = &s3c2410wdt_pm_ops,
.of_match_table = of_match_ptr(s3c2410_wdt_match),
},
};
diff --git a/drivers/watchdog/shwdt.c b/drivers/watchdog/shwdt.c
index 6185af2b331..5bca7945776 100644
--- a/drivers/watchdog/shwdt.c
+++ b/drivers/watchdog/shwdt.c
@@ -241,7 +241,7 @@ static int sh_wdt_probe(struct platform_device *pdev)
wdt->dev = &pdev->dev;
- wdt->clk = clk_get(&pdev->dev, NULL);
+ wdt->clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(wdt->clk)) {
/*
* Clock framework support is optional, continue on
@@ -251,10 +251,8 @@ static int sh_wdt_probe(struct platform_device *pdev)
}
wdt->base = devm_ioremap_resource(wdt->dev, res);
- if (IS_ERR(wdt->base)) {
- rc = PTR_ERR(wdt->base);
- goto err;
- }
+ if (IS_ERR(wdt->base))
+ return PTR_ERR(wdt->base);
watchdog_set_nowayout(&sh_wdt_dev, nowayout);
watchdog_set_drvdata(&sh_wdt_dev, wdt);
@@ -277,7 +275,7 @@ static int sh_wdt_probe(struct platform_device *pdev)
rc = watchdog_register_device(&sh_wdt_dev);
if (unlikely(rc)) {
dev_err(&pdev->dev, "Can't register watchdog (err=%d)\n", rc);
- goto err;
+ return rc;
}
init_timer(&wdt->timer);
@@ -292,23 +290,15 @@ static int sh_wdt_probe(struct platform_device *pdev)
pm_runtime_enable(&pdev->dev);
return 0;
-
-err:
- clk_put(wdt->clk);
-
- return rc;
}
static int sh_wdt_remove(struct platform_device *pdev)
{
struct sh_wdt *wdt = platform_get_drvdata(pdev);
- platform_set_drvdata(pdev, NULL);
-
watchdog_unregister_device(&sh_wdt_dev);
pm_runtime_disable(&pdev->dev);
- clk_put(wdt->clk);
return 0;
}
diff --git a/drivers/watchdog/softdog.c b/drivers/watchdog/softdog.c
index fe83beb8f1b..b68b1e519d5 100644
--- a/drivers/watchdog/softdog.c
+++ b/drivers/watchdog/softdog.c
@@ -152,7 +152,6 @@ static struct watchdog_ops softdog_ops = {
.owner = THIS_MODULE,
.start = softdog_ping,
.stop = softdog_stop,
- .ping = softdog_ping,
.set_timeout = softdog_set_timeout,
};
diff --git a/drivers/watchdog/sp805_wdt.c b/drivers/watchdog/sp805_wdt.c
index 8872642505c..58df98aec12 100644
--- a/drivers/watchdog/sp805_wdt.c
+++ b/drivers/watchdog/sp805_wdt.c
@@ -231,7 +231,7 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id)
goto err;
}
- wdt->clk = clk_get(&adev->dev, NULL);
+ wdt->clk = devm_clk_get(&adev->dev, NULL);
if (IS_ERR(wdt->clk)) {
dev_warn(&adev->dev, "Clock not found\n");
ret = PTR_ERR(wdt->clk);
@@ -251,15 +251,13 @@ sp805_wdt_probe(struct amba_device *adev, const struct amba_id *id)
if (ret) {
dev_err(&adev->dev, "watchdog_register_device() failed: %d\n",
ret);
- goto err_register;
+ goto err;
}
amba_set_drvdata(adev, wdt);
dev_info(&adev->dev, "registration successful\n");
return 0;
-err_register:
- clk_put(wdt->clk);
err:
dev_err(&adev->dev, "Probe Failed!!!\n");
return ret;
@@ -272,7 +270,6 @@ static int sp805_wdt_remove(struct amba_device *adev)
watchdog_unregister_device(&wdt->wdd);
amba_set_drvdata(adev, NULL);
watchdog_set_drvdata(&wdt->wdd, NULL);
- clk_put(wdt->clk);
return 0;
}
diff --git a/drivers/watchdog/ts72xx_wdt.c b/drivers/watchdog/ts72xx_wdt.c
index b8a92459f10..4da59b4d73f 100644
--- a/drivers/watchdog/ts72xx_wdt.c
+++ b/drivers/watchdog/ts72xx_wdt.c
@@ -396,7 +396,7 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
struct resource *r1, *r2;
int error = 0;
- wdt = kzalloc(sizeof(struct ts72xx_wdt), GFP_KERNEL);
+ wdt = devm_kzalloc(&pdev->dev, sizeof(struct ts72xx_wdt), GFP_KERNEL);
if (!wdt) {
dev_err(&pdev->dev, "failed to allocate memory\n");
return -ENOMEM;
@@ -405,44 +405,22 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
r1 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r1) {
dev_err(&pdev->dev, "failed to get memory resource\n");
- error = -ENODEV;
- goto fail;
+ return -ENODEV;
}
- r1 = request_mem_region(r1->start, resource_size(r1), pdev->name);
- if (!r1) {
- dev_err(&pdev->dev, "cannot request memory region\n");
- error = -EBUSY;
- goto fail;
- }
-
- wdt->control_reg = ioremap(r1->start, resource_size(r1));
- if (!wdt->control_reg) {
- dev_err(&pdev->dev, "failed to map memory\n");
- error = -ENODEV;
- goto fail_free_control;
- }
+ wdt->control_reg = devm_ioremap_resource(&pdev->dev, r1);
+ if (IS_ERR(wdt->control_reg))
+ return PTR_ERR(wdt->control_reg);
r2 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (!r2) {
dev_err(&pdev->dev, "failed to get memory resource\n");
- error = -ENODEV;
- goto fail_unmap_control;
- }
-
- r2 = request_mem_region(r2->start, resource_size(r2), pdev->name);
- if (!r2) {
- dev_err(&pdev->dev, "cannot request memory region\n");
- error = -EBUSY;
- goto fail_unmap_control;
+ return -ENODEV;
}
- wdt->feed_reg = ioremap(r2->start, resource_size(r2));
- if (!wdt->feed_reg) {
- dev_err(&pdev->dev, "failed to map memory\n");
- error = -ENODEV;
- goto fail_free_feed;
- }
+ wdt->feed_reg = devm_ioremap_resource(&pdev->dev, r2);
+ if (IS_ERR(wdt->feed_reg))
+ return PTR_ERR(wdt->feed_reg);
platform_set_drvdata(pdev, wdt);
ts72xx_wdt_pdev = pdev;
@@ -455,45 +433,20 @@ static int ts72xx_wdt_probe(struct platform_device *pdev)
error = misc_register(&ts72xx_wdt_miscdev);
if (error) {
dev_err(&pdev->dev, "failed to register miscdev\n");
- goto fail_unmap_feed;
+ return error;
}
dev_info(&pdev->dev, "TS-72xx Watchdog driver\n");
return 0;
-
-fail_unmap_feed:
- platform_set_drvdata(pdev, NULL);
- iounmap(wdt->feed_reg);
-fail_free_feed:
- release_mem_region(r2->start, resource_size(r2));
-fail_unmap_control:
- iounmap(wdt->control_reg);
-fail_free_control:
- release_mem_region(r1->start, resource_size(r1));
-fail:
- kfree(wdt);
- return error;
}
static int ts72xx_wdt_remove(struct platform_device *pdev)
{
- struct ts72xx_wdt *wdt = platform_get_drvdata(pdev);
- struct resource *res;
int error;
error = misc_deregister(&ts72xx_wdt_miscdev);
- platform_set_drvdata(pdev, NULL);
-
- iounmap(wdt->feed_reg);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- release_mem_region(res->start, resource_size(res));
-
- iounmap(wdt->control_reg);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, resource_size(res));
- kfree(wdt);
return error;
}
diff --git a/drivers/watchdog/twl4030_wdt.c b/drivers/watchdog/twl4030_wdt.c
index 0f03106f751..2d4535dc267 100644
--- a/drivers/watchdog/twl4030_wdt.c
+++ b/drivers/watchdog/twl4030_wdt.c
@@ -90,10 +90,8 @@ static int twl4030_wdt_probe(struct platform_device *pdev)
twl4030_wdt_stop(wdt);
ret = watchdog_register_device(wdt);
- if (ret) {
- platform_set_drvdata(pdev, NULL);
+ if (ret)
return ret;
- }
return 0;
}
@@ -103,7 +101,6 @@ static int twl4030_wdt_remove(struct platform_device *pdev)
struct watchdog_device *wdt = platform_get_drvdata(pdev);
watchdog_unregister_device(wdt);
- platform_set_drvdata(pdev, NULL);
return 0;
}
diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index faf4e189fe4..6aaefbad303 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -469,8 +469,10 @@ static int watchdog_release(struct inode *inode, struct file *file)
* or if WDIOF_MAGICCLOSE is not set. If nowayout was set then
* watchdog_stop will fail.
*/
- if (test_and_clear_bit(WDOG_ALLOW_RELEASE, &wdd->status) ||
- !(wdd->info->options & WDIOF_MAGICCLOSE))
+ if (!test_bit(WDOG_ACTIVE, &wdd->status))
+ err = 0;
+ else if (test_and_clear_bit(WDOG_ALLOW_RELEASE, &wdd->status) ||
+ !(wdd->info->options & WDIOF_MAGICCLOSE))
err = watchdog_stop(wdd);
/* If the watchdog was not stopped, send a keepalive ping */
diff --git a/drivers/watchdog/wdrtas.c b/drivers/watchdog/wdrtas.c
index 0a77655cda6..3045debd541 100644
--- a/drivers/watchdog/wdrtas.c
+++ b/drivers/watchdog/wdrtas.c
@@ -162,31 +162,6 @@ static void wdrtas_timer_stop(void)
}
/**
- * wdrtas_log_scanned_event - logs an event we received during keepalive
- *
- * wdrtas_log_scanned_event prints a message to the log buffer dumping
- * the results of the last event-scan call
- */
-static void wdrtas_log_scanned_event(void)
-{
- int i;
-
- for (i = 0; i < WDRTAS_LOGBUFFER_LEN; i += 16)
- pr_info("dumping event (line %i/%i), data = "
- "%02x %02x %02x %02x %02x %02x %02x %02x "
- "%02x %02x %02x %02x %02x %02x %02x %02x\n",
- (i / 16) + 1, (WDRTAS_LOGBUFFER_LEN / 16),
- wdrtas_logbuffer[i + 0], wdrtas_logbuffer[i + 1],
- wdrtas_logbuffer[i + 2], wdrtas_logbuffer[i + 3],
- wdrtas_logbuffer[i + 4], wdrtas_logbuffer[i + 5],
- wdrtas_logbuffer[i + 6], wdrtas_logbuffer[i + 7],
- wdrtas_logbuffer[i + 8], wdrtas_logbuffer[i + 9],
- wdrtas_logbuffer[i + 10], wdrtas_logbuffer[i + 11],
- wdrtas_logbuffer[i + 12], wdrtas_logbuffer[i + 13],
- wdrtas_logbuffer[i + 14], wdrtas_logbuffer[i + 15]);
-}
-
-/**
* wdrtas_timer_keepalive - resets watchdog timer to keep system alive
*
* wdrtas_timer_keepalive restarts the watchdog timer by calling the
@@ -205,7 +180,9 @@ static void wdrtas_timer_keepalive(void)
if (result < 0)
pr_err("event-scan failed: %li\n", result);
if (result == 0)
- wdrtas_log_scanned_event();
+ print_hex_dump(KERN_INFO, "dumping event, data: ",
+ DUMP_PREFIX_OFFSET, 16, 1,
+ wdrtas_logbuffer, WDRTAS_LOGBUFFER_LEN, false);
} while (result == 0);
}
diff --git a/drivers/watchdog/wm831x_wdt.c b/drivers/watchdog/wm831x_wdt.c
index 9dcb6d08227..d4e47eda418 100644
--- a/drivers/watchdog/wm831x_wdt.c
+++ b/drivers/watchdog/wm831x_wdt.c
@@ -247,9 +247,10 @@ static int wm831x_wdt_probe(struct platform_device *pdev)
reg |= pdata->software << WM831X_WDOG_RST_SRC_SHIFT;
if (pdata->update_gpio) {
- ret = gpio_request_one(pdata->update_gpio,
- GPIOF_DIR_OUT | GPIOF_INIT_LOW,
- "Watchdog update");
+ ret = devm_gpio_request_one(&pdev->dev,
+ pdata->update_gpio,
+ GPIOF_OUT_INIT_LOW,
+ "Watchdog update");
if (ret < 0) {
dev_err(wm831x->dev,
"Failed to request update GPIO: %d\n",
@@ -270,7 +271,7 @@ static int wm831x_wdt_probe(struct platform_device *pdev)
} else {
dev_err(wm831x->dev,
"Failed to unlock security key: %d\n", ret);
- goto err_gpio;
+ goto err;
}
}
@@ -278,29 +279,23 @@ static int wm831x_wdt_probe(struct platform_device *pdev)
if (ret != 0) {
dev_err(wm831x->dev, "watchdog_register_device() failed: %d\n",
ret);
- goto err_gpio;
+ goto err;
}
- dev_set_drvdata(&pdev->dev, driver_data);
+ platform_set_drvdata(pdev, driver_data);
return 0;
-err_gpio:
- if (driver_data->update_gpio)
- gpio_free(driver_data->update_gpio);
err:
return ret;
}
static int wm831x_wdt_remove(struct platform_device *pdev)
{
- struct wm831x_wdt_drvdata *driver_data = dev_get_drvdata(&pdev->dev);
+ struct wm831x_wdt_drvdata *driver_data = platform_get_drvdata(pdev);
watchdog_unregister_device(&driver_data->wdt);
- if (driver_data->update_gpio)
- gpio_free(driver_data->update_gpio);
-
return 0;
}