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-rw-r--r--drivers/watchdog/Kconfig4
-rw-r--r--drivers/watchdog/at91rm9200_wdt.c61
-rw-r--r--drivers/watchdog/bcm_kona_wdt.c27
-rw-r--r--drivers/watchdog/diag288_wdt.c20
-rw-r--r--drivers/watchdog/iTCO_wdt.c51
-rw-r--r--drivers/watchdog/octeon-wdt-main.c201
-rw-r--r--drivers/watchdog/pnx4008_wdt.c2
-rw-r--r--drivers/watchdog/qcom-wdt.c21
-rw-r--r--drivers/watchdog/stmp3xxx_rtc_wdt.c4
9 files changed, 194 insertions, 197 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 16f202350997..e5e7c5505de7 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -154,7 +154,7 @@ config ARM_SP805_WATCHDOG
config AT91RM9200_WATCHDOG
tristate "AT91RM9200 watchdog"
- depends on SOC_AT91RM9200
+ depends on SOC_AT91RM9200 && MFD_SYSCON
help
Watchdog timer embedded into AT91RM9200 chips. This will reboot your
system when the timeout is reached.
@@ -169,7 +169,6 @@ config AT91SAM9X_WATCHDOG
config CADENCE_WATCHDOG
tristate "Cadence Watchdog Timer"
- depends on ARM
select WATCHDOG_CORE
help
Say Y here if you want to include support for the watchdog
@@ -1190,6 +1189,7 @@ config OCTEON_WDT
tristate "Cavium OCTEON SOC family Watchdog Timer"
depends on CAVIUM_OCTEON_SOC
default y
+ select WATCHDOG_CORE
select EXPORT_UASM if OCTEON_WDT = m
help
Hardware driver for OCTEON's on chip watchdog timer.
diff --git a/drivers/watchdog/at91rm9200_wdt.c b/drivers/watchdog/at91rm9200_wdt.c
index d244112d5b6f..41cecb55766c 100644
--- a/drivers/watchdog/at91rm9200_wdt.c
+++ b/drivers/watchdog/at91rm9200_wdt.c
@@ -12,27 +12,32 @@
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/bitops.h>
+#include <linux/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/kernel.h>
+#include <linux/mfd/syscon.h>
+#include <linux/mfd/syscon/atmel-st.h>
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/regmap.h>
#include <linux/types.h>
#include <linux/watchdog.h>
#include <linux/uaccess.h>
#include <linux/of.h>
#include <linux/of_device.h>
-#include <mach/at91_st.h>
#define WDT_DEFAULT_TIME 5 /* seconds */
#define WDT_MAX_TIME 256 /* seconds */
static int wdt_time = WDT_DEFAULT_TIME;
static bool nowayout = WATCHDOG_NOWAYOUT;
+static struct regmap *regmap_st;
module_param(wdt_time, int, 0);
MODULE_PARM_DESC(wdt_time, "Watchdog time in seconds. (default="
@@ -50,12 +55,33 @@ static unsigned long at91wdt_busy;
/* ......................................................................... */
+static int at91rm9200_restart(struct notifier_block *this,
+ unsigned long mode, void *cmd)
+{
+ /*
+ * Perform a hardware reset with the use of the Watchdog timer.
+ */
+ regmap_write(regmap_st, AT91_ST_WDMR,
+ AT91_ST_RSTEN | AT91_ST_EXTEN | 1);
+ regmap_write(regmap_st, AT91_ST_CR, AT91_ST_WDRST);
+
+ mdelay(2000);
+
+ pr_emerg("Unable to restart system\n");
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block at91rm9200_restart_nb = {
+ .notifier_call = at91rm9200_restart,
+ .priority = 192,
+};
+
/*
* Disable the watchdog.
*/
static inline void at91_wdt_stop(void)
{
- at91_st_write(AT91_ST_WDMR, AT91_ST_EXTEN);
+ regmap_write(regmap_st, AT91_ST_WDMR, AT91_ST_EXTEN);
}
/*
@@ -63,9 +89,9 @@ static inline void at91_wdt_stop(void)
*/
static inline void at91_wdt_start(void)
{
- at91_st_write(AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
+ regmap_write(regmap_st, AT91_ST_WDMR, AT91_ST_EXTEN | AT91_ST_RSTEN |
(((65536 * wdt_time) >> 8) & AT91_ST_WDV));
- at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
+ regmap_write(regmap_st, AT91_ST_CR, AT91_ST_WDRST);
}
/*
@@ -73,7 +99,7 @@ static inline void at91_wdt_start(void)
*/
static inline void at91_wdt_reload(void)
{
- at91_st_write(AT91_ST_CR, AT91_ST_WDRST);
+ regmap_write(regmap_st, AT91_ST_CR, AT91_ST_WDRST);
}
/* ......................................................................... */
@@ -203,16 +229,32 @@ static struct miscdevice at91wdt_miscdev = {
static int at91wdt_probe(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
+ struct device *parent;
int res;
if (at91wdt_miscdev.parent)
return -EBUSY;
at91wdt_miscdev.parent = &pdev->dev;
+ parent = dev->parent;
+ if (!parent) {
+ dev_err(dev, "no parent\n");
+ return -ENODEV;
+ }
+
+ regmap_st = syscon_node_to_regmap(parent->of_node);
+ if (!regmap_st)
+ return -ENODEV;
+
res = misc_register(&at91wdt_miscdev);
if (res)
return res;
+ res = register_restart_handler(&at91rm9200_restart_nb);
+ if (res)
+ dev_warn(dev, "failed to register restart handler\n");
+
pr_info("AT91 Watchdog Timer enabled (%d seconds%s)\n",
wdt_time, nowayout ? ", nowayout" : "");
return 0;
@@ -220,8 +262,13 @@ static int at91wdt_probe(struct platform_device *pdev)
static int at91wdt_remove(struct platform_device *pdev)
{
+ struct device *dev = &pdev->dev;
int res;
+ res = unregister_restart_handler(&at91rm9200_restart_nb);
+ if (res)
+ dev_warn(dev, "failed to unregister restart handler\n");
+
res = misc_deregister(&at91wdt_miscdev);
if (!res)
at91wdt_miscdev.parent = NULL;
@@ -267,7 +314,7 @@ static struct platform_driver at91wdt_driver = {
.suspend = at91wdt_suspend,
.resume = at91wdt_resume,
.driver = {
- .name = "at91_wdt",
+ .name = "atmel_st_watchdog",
.of_match_table = at91_wdt_dt_ids,
},
};
@@ -296,4 +343,4 @@ module_exit(at91_wdt_exit);
MODULE_AUTHOR("Andrew Victor");
MODULE_DESCRIPTION("Watchdog driver for Atmel AT91RM9200");
MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:at91_wdt");
+MODULE_ALIAS("platform:atmel_st_watchdog");
diff --git a/drivers/watchdog/bcm_kona_wdt.c b/drivers/watchdog/bcm_kona_wdt.c
index 4e37db3539a4..22d8ae65772a 100644
--- a/drivers/watchdog/bcm_kona_wdt.c
+++ b/drivers/watchdog/bcm_kona_wdt.c
@@ -99,12 +99,14 @@ static int secure_register_read(struct bcm_kona_wdt *wdt, uint32_t offset)
static int bcm_kona_wdt_dbg_show(struct seq_file *s, void *data)
{
- int ctl_val, cur_val, ret;
+ int ctl_val, cur_val;
unsigned long flags;
struct bcm_kona_wdt *wdt = s->private;
- if (!wdt)
- return seq_puts(s, "No device pointer\n");
+ if (!wdt) {
+ seq_puts(s, "No device pointer\n");
+ return 0;
+ }
spin_lock_irqsave(&wdt->lock, flags);
ctl_val = secure_register_read(wdt, SECWDOG_CTRL_REG);
@@ -112,7 +114,7 @@ static int bcm_kona_wdt_dbg_show(struct seq_file *s, void *data)
spin_unlock_irqrestore(&wdt->lock, flags);
if (ctl_val < 0 || cur_val < 0) {
- ret = seq_puts(s, "Error accessing hardware\n");
+ seq_puts(s, "Error accessing hardware\n");
} else {
int ctl, cur, ctl_sec, cur_sec, res;
@@ -121,15 +123,18 @@ static int bcm_kona_wdt_dbg_show(struct seq_file *s, void *data)
cur = cur_val & SECWDOG_COUNT_MASK;
ctl_sec = TICKS_TO_SECS(ctl, wdt);
cur_sec = TICKS_TO_SECS(cur, wdt);
- ret = seq_printf(s, "Resolution: %d / %d\n"
- "Control: %d s / %d (%#x) ticks\n"
- "Current: %d s / %d (%#x) ticks\n"
- "Busy count: %lu\n", res,
- wdt->resolution, ctl_sec, ctl, ctl, cur_sec,
- cur, cur, wdt->busy_count);
+ seq_printf(s,
+ "Resolution: %d / %d\n"
+ "Control: %d s / %d (%#x) ticks\n"
+ "Current: %d s / %d (%#x) ticks\n"
+ "Busy count: %lu\n",
+ res, wdt->resolution,
+ ctl_sec, ctl, ctl,
+ cur_sec, cur, cur,
+ wdt->busy_count);
}
- return ret;
+ return 0;
}
static int bcm_kona_dbg_open(struct inode *inode, struct file *file)
diff --git a/drivers/watchdog/diag288_wdt.c b/drivers/watchdog/diag288_wdt.c
index 429494b6c822..a9a5210143ae 100644
--- a/drivers/watchdog/diag288_wdt.c
+++ b/drivers/watchdog/diag288_wdt.c
@@ -125,9 +125,7 @@ static int wdt_start(struct watchdog_device *dev)
ret = __diag288_vm(func, dev->timeout, ebc_cmd, len);
WARN_ON(ret != 0);
kfree(ebc_cmd);
- }
-
- if (MACHINE_IS_LPAR) {
+ } else {
ret = __diag288_lpar(WDT_FUNC_INIT,
dev->timeout, LPARWDT_RESTART);
}
@@ -136,7 +134,6 @@ static int wdt_start(struct watchdog_device *dev)
pr_err("The watchdog cannot be activated\n");
return ret;
}
- pr_info("The watchdog was activated\n");
return 0;
}
@@ -145,7 +142,6 @@ static int wdt_stop(struct watchdog_device *dev)
int ret;
ret = __diag288(WDT_FUNC_CANCEL, 0, 0, 0);
- pr_info("The watchdog was deactivated\n");
return ret;
}
@@ -177,10 +173,9 @@ static int wdt_ping(struct watchdog_device *dev)
ret = __diag288_vm(func, dev->timeout, ebc_cmd, len);
WARN_ON(ret != 0);
kfree(ebc_cmd);
- }
-
- if (MACHINE_IS_LPAR)
+ } else {
ret = __diag288_lpar(WDT_FUNC_CHANGE, dev->timeout, 0);
+ }
if (ret)
pr_err("The watchdog timer cannot be started or reset\n");
@@ -202,7 +197,7 @@ static struct watchdog_ops wdt_ops = {
};
static struct watchdog_info wdt_info = {
- .options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE,
+ .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
.firmware_version = 0,
.identity = "z Watchdog",
};
@@ -273,21 +268,16 @@ static int __init diag288_init(void)
watchdog_set_nowayout(&wdt_dev, nowayout_info);
if (MACHINE_IS_VM) {
- pr_info("The watchdog device driver detected a z/VM environment\n");
if (__diag288_vm(WDT_FUNC_INIT, 15,
ebc_begin, sizeof(ebc_begin)) != 0) {
pr_err("The watchdog cannot be initialized\n");
return -EINVAL;
}
- } else if (MACHINE_IS_LPAR) {
- pr_info("The watchdog device driver detected an LPAR environment\n");
+ } else {
if (__diag288_lpar(WDT_FUNC_INIT, 30, LPARWDT_RESTART)) {
pr_err("The watchdog cannot be initialized\n");
return -EINVAL;
}
- } else {
- pr_err("Linux runs in an environment that does not support the diag288 watchdog\n");
- return -ENODEV;
}
if (__diag288_lpar(WDT_FUNC_CANCEL, 0, 0)) {
diff --git a/drivers/watchdog/iTCO_wdt.c b/drivers/watchdog/iTCO_wdt.c
index 05ee0bf88ce9..3c3fd417ddeb 100644
--- a/drivers/watchdog/iTCO_wdt.c
+++ b/drivers/watchdog/iTCO_wdt.c
@@ -51,6 +51,7 @@
#define DRV_VERSION "1.11"
/* Includes */
+#include <linux/acpi.h> /* For ACPI support */
#include <linux/module.h> /* For module specific items */
#include <linux/moduleparam.h> /* For new moduleparam's */
#include <linux/types.h> /* For standard types (like size_t) */
@@ -103,6 +104,8 @@ static struct { /* this is private data for the iTCO_wdt device */
struct platform_device *dev;
/* the PCI-device */
struct pci_dev *pdev;
+ /* whether or not the watchdog has been suspended */
+ bool suspended;
} iTCO_wdt_private;
/* module parameters */
@@ -571,12 +574,60 @@ static void iTCO_wdt_shutdown(struct platform_device *dev)
iTCO_wdt_stop(NULL);
}
+#ifdef CONFIG_PM_SLEEP
+/*
+ * Suspend-to-idle requires this, because it stops the ticks and timekeeping, so
+ * the watchdog cannot be pinged while in that state. In ACPI sleep states the
+ * watchdog is stopped by the platform firmware.
+ */
+
+#ifdef CONFIG_ACPI
+static inline bool need_suspend(void)
+{
+ return acpi_target_system_state() == ACPI_STATE_S0;
+}
+#else
+static inline bool need_suspend(void) { return true; }
+#endif
+
+static int iTCO_wdt_suspend_noirq(struct device *dev)
+{
+ int ret = 0;
+
+ iTCO_wdt_private.suspended = false;
+ if (watchdog_active(&iTCO_wdt_watchdog_dev) && need_suspend()) {
+ ret = iTCO_wdt_stop(&iTCO_wdt_watchdog_dev);
+ if (!ret)
+ iTCO_wdt_private.suspended = true;
+ }
+ return ret;
+}
+
+static int iTCO_wdt_resume_noirq(struct device *dev)
+{
+ if (iTCO_wdt_private.suspended)
+ iTCO_wdt_start(&iTCO_wdt_watchdog_dev);
+
+ return 0;
+}
+
+static struct dev_pm_ops iTCO_wdt_pm = {
+ .suspend_noirq = iTCO_wdt_suspend_noirq,
+ .resume_noirq = iTCO_wdt_resume_noirq,
+};
+
+#define ITCO_WDT_PM_OPS (&iTCO_wdt_pm)
+#else
+#define ITCO_WDT_PM_OPS NULL
+#endif /* CONFIG_PM_SLEEP */
+
static struct platform_driver iTCO_wdt_driver = {
.probe = iTCO_wdt_probe,
.remove = iTCO_wdt_remove,
.shutdown = iTCO_wdt_shutdown,
.driver = {
.name = DRV_NAME,
+ .pm = ITCO_WDT_PM_OPS,
},
};
diff --git a/drivers/watchdog/octeon-wdt-main.c b/drivers/watchdog/octeon-wdt-main.c
index 8453531545df..14521c8b3d5a 100644
--- a/drivers/watchdog/octeon-wdt-main.c
+++ b/drivers/watchdog/octeon-wdt-main.c
@@ -3,6 +3,8 @@
*
* Copyright (C) 2007, 2008, 2009, 2010 Cavium Networks
*
+ * Converted to use WATCHDOG_CORE by Aaro Koskinen <aaro.koskinen@iki.fi>.
+ *
* Some parts derived from wdt.c
*
* (c) Copyright 1996-1997 Alan Cox <alan@lxorguk.ukuu.org.uk>,
@@ -103,13 +105,10 @@ MODULE_PARM_DESC(nowayout,
"Watchdog cannot be stopped once started (default="
__MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
-static unsigned long octeon_wdt_is_open;
-static char expect_close;
-
-static u32 __initdata nmi_stage1_insns[64];
+static u32 nmi_stage1_insns[64] __initdata;
/* We need one branch and therefore one relocation per target label. */
-static struct uasm_label __initdata labels[5];
-static struct uasm_reloc __initdata relocs[5];
+static struct uasm_label labels[5] __initdata;
+static struct uasm_reloc relocs[5] __initdata;
enum lable_id {
label_enter_bootloader = 1
@@ -218,7 +217,8 @@ static void __init octeon_wdt_build_stage1(void)
pr_debug("\t.set pop\n");
if (len > 32)
- panic("NMI stage 1 handler exceeds 32 instructions, was %d\n", len);
+ panic("NMI stage 1 handler exceeds 32 instructions, was %d\n",
+ len);
}
static int cpu2core(int cpu)
@@ -294,6 +294,7 @@ static void octeon_wdt_write_hex(u64 value, int digits)
{
int d;
int v;
+
for (d = 0; d < digits; d++) {
v = (value >> ((digits - d - 1) * 4)) & 0xf;
if (v >= 10)
@@ -303,7 +304,7 @@ static void octeon_wdt_write_hex(u64 value, int digits)
}
}
-const char *reg_name[] = {
+static const char reg_name[][3] = {
"$0", "at", "v0", "v1", "a0", "a1", "a2", "a3",
"a4", "a5", "a6", "a7", "t0", "t1", "t2", "t3",
"s0", "s1", "s2", "s3", "s4", "s5", "s6", "s7",
@@ -444,7 +445,7 @@ static int octeon_wdt_cpu_callback(struct notifier_block *nfb,
return NOTIFY_OK;
}
-static void octeon_wdt_ping(void)
+static int octeon_wdt_ping(struct watchdog_device __always_unused *wdog)
{
int cpu;
int coreid;
@@ -457,10 +458,12 @@ static void octeon_wdt_ping(void)
!cpumask_test_cpu(cpu, &irq_enabled_cpus)) {
/* We have to enable the irq */
int irq = OCTEON_IRQ_WDOG0 + coreid;
+
enable_irq(irq);
cpumask_set_cpu(cpu, &irq_enabled_cpus);
}
}
+ return 0;
}
static void octeon_wdt_calc_parameters(int t)
@@ -489,7 +492,8 @@ static void octeon_wdt_calc_parameters(int t)
timeout_cnt = ((octeon_get_io_clock_rate() >> 8) * timeout_sec) >> 8;
}
-static int octeon_wdt_set_heartbeat(int t)
+static int octeon_wdt_set_timeout(struct watchdog_device *wdog,
+ unsigned int t)
{
int cpu;
int coreid;
@@ -509,158 +513,45 @@ static int octeon_wdt_set_heartbeat(int t)
cvmx_write_csr(CVMX_CIU_WDOGX(coreid), ciu_wdog.u64);
cvmx_write_csr(CVMX_CIU_PP_POKEX(coreid), 1);
}
- octeon_wdt_ping(); /* Get the irqs back on. */
+ octeon_wdt_ping(wdog); /* Get the irqs back on. */
return 0;
}
-/**
- * octeon_wdt_write:
- * @file: file handle to the watchdog
- * @buf: buffer to write (unused as data does not matter here
- * @count: count of bytes
- * @ppos: pointer to the position to write. No seeks allowed
- *
- * A write to a watchdog device is defined as a keepalive signal. Any
- * write of data will do, as we we don't define content meaning.
- */
-
-static ssize_t octeon_wdt_write(struct file *file, const char __user *buf,
- size_t count, loff_t *ppos)
-{
- if (count) {
- if (!nowayout) {
- size_t i;
-
- /* In case it was set long ago */
- expect_close = 0;
-
- for (i = 0; i != count; i++) {
- char c;
- if (get_user(c, buf + i))
- return -EFAULT;
- if (c == 'V')
- expect_close = 1;
- }
- }
- octeon_wdt_ping();
- }
- return count;
-}
-
-/**
- * octeon_wdt_ioctl:
- * @file: file handle to the device
- * @cmd: watchdog command
- * @arg: argument pointer
- *
- * The watchdog API defines a common set of functions for all
- * watchdogs according to their available features. We only
- * actually usefully support querying capabilities and setting
- * the timeout.
- */
-
-static long octeon_wdt_ioctl(struct file *file, unsigned int cmd,
- unsigned long arg)
-{
- void __user *argp = (void __user *)arg;
- int __user *p = argp;
- int new_heartbeat;
-
- static struct watchdog_info ident = {
- .options = WDIOF_SETTIMEOUT|
- WDIOF_MAGICCLOSE|
- WDIOF_KEEPALIVEPING,
- .firmware_version = 1,
- .identity = "OCTEON",
- };
-
- switch (cmd) {
- case WDIOC_GETSUPPORT:
- return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
- case WDIOC_GETSTATUS:
- case WDIOC_GETBOOTSTATUS:
- return put_user(0, p);
- case WDIOC_KEEPALIVE:
- octeon_wdt_ping();
- return 0;
- case WDIOC_SETTIMEOUT:
- if (get_user(new_heartbeat, p))
- return -EFAULT;
- if (octeon_wdt_set_heartbeat(new_heartbeat))
- return -EINVAL;
- /* Fall through. */
- case WDIOC_GETTIMEOUT:
- return put_user(heartbeat, p);
- default:
- return -ENOTTY;
- }
-}
-
-/**
- * octeon_wdt_open:
- * @inode: inode of device
- * @file: file handle to device
- *
- * The watchdog device has been opened. The watchdog device is single
- * open and on opening we do a ping to reset the counters.
- */
-
-static int octeon_wdt_open(struct inode *inode, struct file *file)
+static int octeon_wdt_start(struct watchdog_device *wdog)
{
- if (test_and_set_bit(0, &octeon_wdt_is_open))
- return -EBUSY;
- /*
- * Activate
- */
- octeon_wdt_ping();
+ octeon_wdt_ping(wdog);
do_coundown = 1;
- return nonseekable_open(inode, file);
+ return 0;
}
-/**
- * octeon_wdt_release:
- * @inode: inode to board
- * @file: file handle to board
- *
- * The watchdog has a configurable API. There is a religious dispute
- * between people who want their watchdog to be able to shut down and
- * those who want to be sure if the watchdog manager dies the machine
- * reboots. In the former case we disable the counters, in the latter
- * case you have to open it again very soon.
- */
-
-static int octeon_wdt_release(struct inode *inode, struct file *file)
+static int octeon_wdt_stop(struct watchdog_device *wdog)
{
- if (expect_close) {
- do_coundown = 0;
- octeon_wdt_ping();
- } else {
- pr_crit("WDT device closed unexpectedly. WDT will not stop!\n");
- }
- clear_bit(0, &octeon_wdt_is_open);
- expect_close = 0;
+ do_coundown = 0;
+ octeon_wdt_ping(wdog);
return 0;
}
-static const struct file_operations octeon_wdt_fops = {
- .owner = THIS_MODULE,
- .llseek = no_llseek,
- .write = octeon_wdt_write,
- .unlocked_ioctl = octeon_wdt_ioctl,
- .open = octeon_wdt_open,
- .release = octeon_wdt_release,
+static struct notifier_block octeon_wdt_cpu_notifier = {
+ .notifier_call = octeon_wdt_cpu_callback,
};
-static struct miscdevice octeon_wdt_miscdev = {
- .minor = WATCHDOG_MINOR,
- .name = "watchdog",
- .fops = &octeon_wdt_fops,
+static const struct watchdog_info octeon_wdt_info = {
+ .options = WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING,
+ .identity = "OCTEON",
};
-static struct notifier_block octeon_wdt_cpu_notifier = {
- .notifier_call = octeon_wdt_cpu_callback,
+static const struct watchdog_ops octeon_wdt_ops = {
+ .owner = THIS_MODULE,
+ .start = octeon_wdt_start,
+ .stop = octeon_wdt_stop,
+ .ping = octeon_wdt_ping,
+ .set_timeout = octeon_wdt_set_timeout,
};
+static struct watchdog_device octeon_wdt = {
+ .info = &octeon_wdt_info,
+ .ops = &octeon_wdt_ops,
+};
/**
* Module/ driver initialization.
@@ -685,7 +576,8 @@ static int __init octeon_wdt_init(void)
max_timeout_sec = 6;
do {
max_timeout_sec--;
- timeout_cnt = ((octeon_get_io_clock_rate() >> 8) * max_timeout_sec) >> 8;
+ timeout_cnt = ((octeon_get_io_clock_rate() >> 8) *
+ max_timeout_sec) >> 8;
} while (timeout_cnt > 65535);
BUG_ON(timeout_cnt == 0);
@@ -694,11 +586,15 @@ static int __init octeon_wdt_init(void)
pr_info("Initial granularity %d Sec\n", timeout_sec);
- ret = misc_register(&octeon_wdt_miscdev);
+ octeon_wdt.timeout = timeout_sec;
+ octeon_wdt.max_timeout = UINT_MAX;
+
+ watchdog_set_nowayout(&octeon_wdt, nowayout);
+
+ ret = watchdog_register_device(&octeon_wdt);
if (ret) {
- pr_err("cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, ret);
- goto out;
+ pr_err("watchdog_register_device() failed: %d\n", ret);
+ return ret;
}
/* Build the NMI handler ... */
@@ -721,8 +617,7 @@ static int __init octeon_wdt_init(void)
__register_hotcpu_notifier(&octeon_wdt_cpu_notifier);
cpu_notifier_register_done();
-out:
- return ret;
+ return 0;
}
/**
@@ -732,7 +627,7 @@ static void __exit octeon_wdt_cleanup(void)
{
int cpu;
- misc_deregister(&octeon_wdt_miscdev);
+ watchdog_unregister_device(&octeon_wdt);
cpu_notifier_register_begin();
__unregister_hotcpu_notifier(&octeon_wdt_cpu_notifier);
diff --git a/drivers/watchdog/pnx4008_wdt.c b/drivers/watchdog/pnx4008_wdt.c
index 55e220150103..b9c6049c3e78 100644
--- a/drivers/watchdog/pnx4008_wdt.c
+++ b/drivers/watchdog/pnx4008_wdt.c
@@ -216,7 +216,7 @@ static struct platform_driver platform_wdt_driver = {
module_platform_driver(platform_wdt_driver);
MODULE_AUTHOR("MontaVista Software, Inc. <source@mvista.com>");
-MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>");
+MODULE_AUTHOR("Wolfram Sang <kernel@pengutronix.de>");
MODULE_DESCRIPTION("PNX4008 Watchdog Driver");
module_param(heartbeat, uint, 0);
diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index aa85618c4d03..aa03ca8f2d9b 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -20,9 +20,9 @@
#include <linux/reboot.h>
#include <linux/watchdog.h>
-#define WDT_RST 0x0
-#define WDT_EN 0x8
-#define WDT_BITE_TIME 0x24
+#define WDT_RST 0x38
+#define WDT_EN 0x40
+#define WDT_BITE_TIME 0x5C
struct qcom_wdt {
struct watchdog_device wdd;
@@ -117,6 +117,8 @@ static int qcom_wdt_probe(struct platform_device *pdev)
{
struct qcom_wdt *wdt;
struct resource *res;
+ struct device_node *np = pdev->dev.of_node;
+ u32 percpu_offset;
int ret;
wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
@@ -124,6 +126,14 @@ static int qcom_wdt_probe(struct platform_device *pdev)
return -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ /* We use CPU0's DGT for the watchdog */
+ if (of_property_read_u32(np, "cpu-offset", &percpu_offset))
+ percpu_offset = 0;
+
+ res->start += percpu_offset;
+ res->end += percpu_offset;
+
wdt->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(wdt->base))
return PTR_ERR(wdt->base);
@@ -203,9 +213,8 @@ static int qcom_wdt_remove(struct platform_device *pdev)
}
static const struct of_device_id qcom_wdt_of_table[] = {
- { .compatible = "qcom,kpss-wdt-msm8960", },
- { .compatible = "qcom,kpss-wdt-apq8064", },
- { .compatible = "qcom,kpss-wdt-ipq8064", },
+ { .compatible = "qcom,kpss-timer" },
+ { .compatible = "qcom,scss-timer" },
{ },
};
MODULE_DEVICE_TABLE(of, qcom_wdt_of_table);
diff --git a/drivers/watchdog/stmp3xxx_rtc_wdt.c b/drivers/watchdog/stmp3xxx_rtc_wdt.c
index a62b1b6decf4..e7f0d5b60d3d 100644
--- a/drivers/watchdog/stmp3xxx_rtc_wdt.c
+++ b/drivers/watchdog/stmp3xxx_rtc_wdt.c
@@ -1,7 +1,7 @@
/*
* Watchdog driver for the RTC based watchdog in STMP3xxx and i.MX23/28
*
- * Author: Wolfram Sang <w.sang@pengutronix.de>
+ * Author: Wolfram Sang <kernel@pengutronix.de>
*
* Copyright (C) 2011-12 Wolfram Sang, Pengutronix
*
@@ -129,4 +129,4 @@ module_platform_driver(stmp3xxx_wdt_driver);
MODULE_DESCRIPTION("STMP3XXX RTC Watchdog Driver");
MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Wolfram Sang <w.sang@pengutronix.de>");
+MODULE_AUTHOR("Wolfram Sang <kernel@pengutronix.de>");
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.