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path: root/drivers/watchdog/intel_scu_watchdog.c
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Diffstat (limited to 'drivers/watchdog/intel_scu_watchdog.c')
-rw-r--r--drivers/watchdog/intel_scu_watchdog.c80
1 files changed, 37 insertions, 43 deletions
diff --git a/drivers/watchdog/intel_scu_watchdog.c b/drivers/watchdog/intel_scu_watchdog.c
index 1abdc0454c5..0caab6241eb 100644
--- a/drivers/watchdog/intel_scu_watchdog.c
+++ b/drivers/watchdog/intel_scu_watchdog.c
@@ -22,6 +22,8 @@
*
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/compiler.h>
#include <linux/module.h>
#include <linux/kernel.h>
@@ -46,7 +48,7 @@
#include <linux/atomic.h>
#include <asm/intel_scu_ipc.h>
#include <asm/apb_timer.h>
-#include <asm/mrst.h>
+#include <asm/intel-mid.h>
#include "intel_scu_watchdog.h"
@@ -96,15 +98,14 @@ static struct intel_scu_watchdog_dev watchdog_device;
static void watchdog_fire(void)
{
if (force_boot) {
- printk(KERN_CRIT PFX "Initiating system reboot.\n");
+ pr_crit("Initiating system reboot\n");
emergency_restart();
- printk(KERN_CRIT PFX "Reboot didn't ?????\n");
+ pr_crit("Reboot didn't ?????\n");
}
else {
- printk(KERN_CRIT PFX "Immediate Reboot Disabled\n");
- printk(KERN_CRIT PFX
- "System will reset when watchdog timer times out!\n");
+ pr_crit("Immediate Reboot Disabled\n");
+ pr_crit("System will reset when watchdog timer times out!\n");
}
}
@@ -112,8 +113,8 @@ static int check_timer_margin(int new_margin)
{
if ((new_margin < MIN_TIME_CYCLE) ||
(new_margin > MAX_TIME - timer_set)) {
- pr_debug("Watchdog timer: value of new_margin %d is out of the range %d to %d\n",
- new_margin, MIN_TIME_CYCLE, MAX_TIME - timer_set);
+ pr_debug("value of new_margin %d is out of the range %d to %d\n",
+ new_margin, MIN_TIME_CYCLE, MAX_TIME - timer_set);
return -EINVAL;
}
return 0;
@@ -156,14 +157,14 @@ static irqreturn_t watchdog_timer_interrupt(int irq, void *dev_id)
int int_status;
int_status = ioread32(watchdog_device.timer_interrupt_status_addr);
- pr_debug("Watchdog timer: irq, int_status: %x\n", int_status);
+ pr_debug("irq, int_status: %x\n", int_status);
if (int_status != 0)
return IRQ_NONE;
/* has the timer been started? If not, then this is spurious */
if (watchdog_device.timer_started == 0) {
- pr_debug("Watchdog timer: spurious interrupt received\n");
+ pr_debug("spurious interrupt received\n");
return IRQ_HANDLED;
}
@@ -210,7 +211,6 @@ static int intel_scu_set_heartbeat(u32 t)
int ipc_ret;
int retry_count;
u32 soft_value;
- u32 hw_pre_value;
u32 hw_value;
watchdog_device.timer_set = t;
@@ -220,16 +220,15 @@ static int intel_scu_set_heartbeat(u32 t)
(watchdog_device.timer_set - timer_margin)
* watchdog_device.timer_tbl_ptr->freq_hz;
- pr_debug("Watchdog timer: set_heartbeat: timer freq is %d\n",
- watchdog_device.timer_tbl_ptr->freq_hz);
- pr_debug("Watchdog timer: set_heartbeat: timer_set is %x (hex)\n",
- watchdog_device.timer_set);
- pr_debug("Watchdog timer: set_hearbeat: timer_margin is %x (hex)\n",
- timer_margin);
- pr_debug("Watchdog timer: set_heartbeat: threshold is %x (hex)\n",
- watchdog_device.threshold);
- pr_debug("Watchdog timer: set_heartbeat: soft_threshold is %x (hex)\n",
- watchdog_device.soft_threshold);
+ pr_debug("set_heartbeat: timer freq is %d\n",
+ watchdog_device.timer_tbl_ptr->freq_hz);
+ pr_debug("set_heartbeat: timer_set is %x (hex)\n",
+ watchdog_device.timer_set);
+ pr_debug("set_hearbeat: timer_margin is %x (hex)\n", timer_margin);
+ pr_debug("set_heartbeat: threshold is %x (hex)\n",
+ watchdog_device.threshold);
+ pr_debug("set_heartbeat: soft_threshold is %x (hex)\n",
+ watchdog_device.soft_threshold);
/* Adjust thresholds by FREQ_ADJUSTMENT factor, to make the */
/* watchdog timing come out right. */
@@ -264,7 +263,7 @@ static int intel_scu_set_heartbeat(u32 t)
if (MAX_RETRY < retry_count++) {
/* Unable to set timer value */
- pr_err("Watchdog timer: Unable to set timer\n");
+ pr_err("Unable to set timer\n");
return -ENODEV;
}
@@ -273,8 +272,7 @@ static int intel_scu_set_heartbeat(u32 t)
watchdog_device.timer_load_count_addr);
/* read count value before starting timer */
- hw_pre_value = ioread32(watchdog_device.timer_load_count_addr);
- hw_pre_value = hw_pre_value & 0xFFFF0000;
+ ioread32(watchdog_device.timer_load_count_addr);
/* Start the timer */
iowrite32(0x00000003, watchdog_device.timer_control_addr);
@@ -321,18 +319,17 @@ static int intel_scu_release(struct inode *inode, struct file *file)
*/
if (!test_and_clear_bit(0, &watchdog_device.driver_open)) {
- pr_debug("Watchdog timer: intel_scu_release, without open\n");
+ pr_debug("intel_scu_release, without open\n");
return -ENOTTY;
}
if (!watchdog_device.timer_started) {
/* Just close, since timer has not been started */
- pr_debug("Watchdog timer: closed, without starting timer\n");
+ pr_debug("closed, without starting timer\n");
return 0;
}
- printk(KERN_CRIT PFX
- "Unexpected close of /dev/watchdog!\n");
+ pr_crit("Unexpected close of /dev/watchdog!\n");
/* Since the timer was started, prevent future reopens */
watchdog_device.driver_closed = 1;
@@ -446,7 +443,7 @@ static int __init intel_scu_watchdog_init(void)
*
* If it isn't an intel MID device then it doesn't have this watchdog
*/
- if (!mrst_identify_cpu())
+ if (!intel_mid_identify_cpu())
return -ENODEV;
/* Check boot parameters to verify that their initial values */
@@ -454,9 +451,8 @@ static int __init intel_scu_watchdog_init(void)
/* Check value of timer_set boot parameter */
if ((timer_set < MIN_TIME_CYCLE) ||
(timer_set > MAX_TIME - MIN_TIME_CYCLE)) {
- pr_err("Watchdog timer: value of timer_set %x (hex) "
- "is out of range from %x to %x (hex)\n",
- timer_set, MIN_TIME_CYCLE, MAX_TIME - MIN_TIME_CYCLE);
+ pr_err("value of timer_set %x (hex) is out of range from %x to %x (hex)\n",
+ timer_set, MIN_TIME_CYCLE, MAX_TIME - MIN_TIME_CYCLE);
return -EINVAL;
}
@@ -467,19 +463,18 @@ static int __init intel_scu_watchdog_init(void)
watchdog_device.timer_tbl_ptr = sfi_get_mtmr(sfi_mtimer_num-1);
if (watchdog_device.timer_tbl_ptr == NULL) {
- pr_debug("Watchdog timer - Intel SCU watchdog: timer is not available\n");
+ pr_debug("timer is not available\n");
return -ENODEV;
}
/* make sure the timer exists */
if (watchdog_device.timer_tbl_ptr->phys_addr == 0) {
- pr_debug("Watchdog timer - Intel SCU watchdog - timer %d does not have valid physical memory\n",
- sfi_mtimer_num);
+ pr_debug("timer %d does not have valid physical memory\n",
+ sfi_mtimer_num);
return -ENODEV;
}
if (watchdog_device.timer_tbl_ptr->irq == 0) {
- pr_debug("Watchdog timer: timer %d invalid irq\n",
- sfi_mtimer_num);
+ pr_debug("timer %d invalid irq\n", sfi_mtimer_num);
return -ENODEV;
}
@@ -487,7 +482,7 @@ static int __init intel_scu_watchdog_init(void)
20);
if (tmp_addr == NULL) {
- pr_debug("Watchdog timer: timer unable to ioremap\n");
+ pr_debug("timer unable to ioremap\n");
return -ENOMEM;
}
@@ -512,7 +507,7 @@ static int __init intel_scu_watchdog_init(void)
ret = register_reboot_notifier(&watchdog_device.intel_scu_notifier);
if (ret) {
- pr_err("Watchdog timer: cannot register notifier %d)\n", ret);
+ pr_err("cannot register notifier %d)\n", ret);
goto register_reboot_error;
}
@@ -522,8 +517,8 @@ static int __init intel_scu_watchdog_init(void)
ret = misc_register(&watchdog_device.miscdev);
if (ret) {
- pr_err("Watchdog timer: cannot register miscdev %d err =%d\n",
- WATCHDOG_MINOR, ret);
+ pr_err("cannot register miscdev %d err =%d\n",
+ WATCHDOG_MINOR, ret);
goto misc_register_error;
}
@@ -532,7 +527,7 @@ static int __init intel_scu_watchdog_init(void)
IRQF_SHARED, "watchdog",
&watchdog_device.timer_load_count_addr);
if (ret) {
- pr_err("Watchdog timer: error requesting irq %d\n", ret);
+ pr_err("error requesting irq %d\n", ret);
goto request_irq_error;
}
/* Make sure timer is disabled before returning */
@@ -567,5 +562,4 @@ module_exit(intel_scu_watchdog_exit);
MODULE_AUTHOR("Intel Corporation");
MODULE_DESCRIPTION("Intel SCU Watchdog Device Driver");
MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
MODULE_VERSION(WDT_VER);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 05:57:55 +0000