mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-26 10:49:33 +00:00
![gundberg](/assets/img/avatar_default.png)
Use the prescaler index, rather than its value, to configure the watchdog. This will prevent a mismatch with the prescaler used to calculate the cycles. Signed-off-by: Per Gundberg <per.gundberg@icomera.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Michael Brunner <michael.brunner@kontron.com> Tested-by: Michael Brunner <michael.brunner@kontron.com> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: stable <stable@vger.kernel.org>
579 lines
14 KiB
C
579 lines
14 KiB
C
/*
|
|
* Kontron PLD watchdog driver
|
|
*
|
|
* Copyright (c) 2010-2013 Kontron Europe GmbH
|
|
* Author: Michael Brunner <michael.brunner@kontron.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License 2 as published
|
|
* by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* Note: From the PLD watchdog point of view timeout and pretimeout are
|
|
* defined differently than in the kernel.
|
|
* First the pretimeout stage runs out before the timeout stage gets
|
|
* active.
|
|
*
|
|
* Kernel/API: P-----| pretimeout
|
|
* |-----------------------T timeout
|
|
* Watchdog: |-----------------P pretimeout_stage
|
|
* |-----T timeout_stage
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/uaccess.h>
|
|
#include <linux/watchdog.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/mfd/kempld.h>
|
|
|
|
#define KEMPLD_WDT_STAGE_TIMEOUT(x) (0x1b + (x) * 4)
|
|
#define KEMPLD_WDT_STAGE_CFG(x) (0x18 + (x))
|
|
#define STAGE_CFG_GET_PRESCALER(x) (((x) & 0x30) >> 4)
|
|
#define STAGE_CFG_SET_PRESCALER(x) (((x) & 0x3) << 4)
|
|
#define STAGE_CFG_PRESCALER_MASK 0x30
|
|
#define STAGE_CFG_ACTION_MASK 0x7
|
|
#define STAGE_CFG_ASSERT (1 << 3)
|
|
|
|
#define KEMPLD_WDT_MAX_STAGES 2
|
|
#define KEMPLD_WDT_KICK 0x16
|
|
#define KEMPLD_WDT_CFG 0x17
|
|
#define KEMPLD_WDT_CFG_ENABLE 0x10
|
|
#define KEMPLD_WDT_CFG_ENABLE_LOCK 0x8
|
|
#define KEMPLD_WDT_CFG_GLOBAL_LOCK 0x80
|
|
|
|
enum {
|
|
ACTION_NONE = 0,
|
|
ACTION_RESET,
|
|
ACTION_NMI,
|
|
ACTION_SMI,
|
|
ACTION_SCI,
|
|
ACTION_DELAY,
|
|
};
|
|
|
|
enum {
|
|
STAGE_TIMEOUT = 0,
|
|
STAGE_PRETIMEOUT,
|
|
};
|
|
|
|
enum {
|
|
PRESCALER_21 = 0,
|
|
PRESCALER_17,
|
|
PRESCALER_12,
|
|
};
|
|
|
|
static const u32 kempld_prescaler[] = {
|
|
[PRESCALER_21] = (1 << 21) - 1,
|
|
[PRESCALER_17] = (1 << 17) - 1,
|
|
[PRESCALER_12] = (1 << 12) - 1,
|
|
0,
|
|
};
|
|
|
|
struct kempld_wdt_stage {
|
|
unsigned int id;
|
|
u32 mask;
|
|
};
|
|
|
|
struct kempld_wdt_data {
|
|
struct kempld_device_data *pld;
|
|
struct watchdog_device wdd;
|
|
unsigned int pretimeout;
|
|
struct kempld_wdt_stage stage[KEMPLD_WDT_MAX_STAGES];
|
|
#ifdef CONFIG_PM
|
|
u8 pm_status_store;
|
|
#endif
|
|
};
|
|
|
|
#define DEFAULT_TIMEOUT 30 /* seconds */
|
|
#define DEFAULT_PRETIMEOUT 0
|
|
|
|
static unsigned int timeout = DEFAULT_TIMEOUT;
|
|
module_param(timeout, uint, 0);
|
|
MODULE_PARM_DESC(timeout,
|
|
"Watchdog timeout in seconds. (>=0, default="
|
|
__MODULE_STRING(DEFAULT_TIMEOUT) ")");
|
|
|
|
static unsigned int pretimeout = DEFAULT_PRETIMEOUT;
|
|
module_param(pretimeout, uint, 0);
|
|
MODULE_PARM_DESC(pretimeout,
|
|
"Watchdog pretimeout in seconds. (>=0, default="
|
|
__MODULE_STRING(DEFAULT_PRETIMEOUT) ")");
|
|
|
|
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 int kempld_wdt_set_stage_action(struct kempld_wdt_data *wdt_data,
|
|
struct kempld_wdt_stage *stage,
|
|
u8 action)
|
|
{
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
u8 stage_cfg;
|
|
|
|
if (!stage || !stage->mask)
|
|
return -EINVAL;
|
|
|
|
kempld_get_mutex(pld);
|
|
stage_cfg = kempld_read8(pld, KEMPLD_WDT_STAGE_CFG(stage->id));
|
|
stage_cfg &= ~STAGE_CFG_ACTION_MASK;
|
|
stage_cfg |= (action & STAGE_CFG_ACTION_MASK);
|
|
|
|
if (action == ACTION_RESET)
|
|
stage_cfg |= STAGE_CFG_ASSERT;
|
|
else
|
|
stage_cfg &= ~STAGE_CFG_ASSERT;
|
|
|
|
kempld_write8(pld, KEMPLD_WDT_STAGE_CFG(stage->id), stage_cfg);
|
|
kempld_release_mutex(pld);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kempld_wdt_set_stage_timeout(struct kempld_wdt_data *wdt_data,
|
|
struct kempld_wdt_stage *stage,
|
|
unsigned int timeout)
|
|
{
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
u32 prescaler = kempld_prescaler[PRESCALER_21];
|
|
u64 stage_timeout64;
|
|
u32 stage_timeout;
|
|
u32 remainder;
|
|
u8 stage_cfg;
|
|
|
|
if (!stage)
|
|
return -EINVAL;
|
|
|
|
stage_timeout64 = (u64)timeout * pld->pld_clock;
|
|
remainder = do_div(stage_timeout64, prescaler);
|
|
if (remainder)
|
|
stage_timeout64++;
|
|
|
|
if (stage_timeout64 > stage->mask)
|
|
return -EINVAL;
|
|
|
|
stage_timeout = stage_timeout64 & stage->mask;
|
|
|
|
kempld_get_mutex(pld);
|
|
stage_cfg = kempld_read8(pld, KEMPLD_WDT_STAGE_CFG(stage->id));
|
|
stage_cfg &= ~STAGE_CFG_PRESCALER_MASK;
|
|
stage_cfg |= STAGE_CFG_SET_PRESCALER(PRESCALER_21);
|
|
kempld_write8(pld, KEMPLD_WDT_STAGE_CFG(stage->id), stage_cfg);
|
|
kempld_write32(pld, KEMPLD_WDT_STAGE_TIMEOUT(stage->id),
|
|
stage_timeout);
|
|
kempld_release_mutex(pld);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* kempld_get_mutex must be called prior to calling this function.
|
|
*/
|
|
static unsigned int kempld_wdt_get_timeout(struct kempld_wdt_data *wdt_data,
|
|
struct kempld_wdt_stage *stage)
|
|
{
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
unsigned int timeout;
|
|
u64 stage_timeout;
|
|
u32 prescaler;
|
|
u32 remainder;
|
|
u8 stage_cfg;
|
|
|
|
if (!stage->mask)
|
|
return 0;
|
|
|
|
stage_cfg = kempld_read8(pld, KEMPLD_WDT_STAGE_CFG(stage->id));
|
|
stage_timeout = kempld_read32(pld, KEMPLD_WDT_STAGE_TIMEOUT(stage->id));
|
|
prescaler = kempld_prescaler[STAGE_CFG_GET_PRESCALER(stage_cfg)];
|
|
|
|
stage_timeout = (stage_timeout & stage->mask) * prescaler;
|
|
remainder = do_div(stage_timeout, pld->pld_clock);
|
|
if (remainder)
|
|
stage_timeout++;
|
|
|
|
timeout = stage_timeout;
|
|
WARN_ON_ONCE(timeout != stage_timeout);
|
|
|
|
return timeout;
|
|
}
|
|
|
|
static int kempld_wdt_set_timeout(struct watchdog_device *wdd,
|
|
unsigned int timeout)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = watchdog_get_drvdata(wdd);
|
|
struct kempld_wdt_stage *pretimeout_stage;
|
|
struct kempld_wdt_stage *timeout_stage;
|
|
int ret;
|
|
|
|
timeout_stage = &wdt_data->stage[STAGE_TIMEOUT];
|
|
pretimeout_stage = &wdt_data->stage[STAGE_PRETIMEOUT];
|
|
|
|
if (pretimeout_stage->mask && wdt_data->pretimeout > 0)
|
|
timeout = wdt_data->pretimeout;
|
|
|
|
ret = kempld_wdt_set_stage_action(wdt_data, timeout_stage,
|
|
ACTION_RESET);
|
|
if (ret)
|
|
return ret;
|
|
ret = kempld_wdt_set_stage_timeout(wdt_data, timeout_stage,
|
|
timeout);
|
|
if (ret)
|
|
return ret;
|
|
|
|
wdd->timeout = timeout;
|
|
return 0;
|
|
}
|
|
|
|
static int kempld_wdt_set_pretimeout(struct watchdog_device *wdd,
|
|
unsigned int pretimeout)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = watchdog_get_drvdata(wdd);
|
|
struct kempld_wdt_stage *pretimeout_stage;
|
|
u8 action = ACTION_NONE;
|
|
int ret;
|
|
|
|
pretimeout_stage = &wdt_data->stage[STAGE_PRETIMEOUT];
|
|
|
|
if (!pretimeout_stage->mask)
|
|
return -ENXIO;
|
|
|
|
if (pretimeout > wdd->timeout)
|
|
return -EINVAL;
|
|
|
|
if (pretimeout > 0)
|
|
action = ACTION_NMI;
|
|
|
|
ret = kempld_wdt_set_stage_action(wdt_data, pretimeout_stage,
|
|
action);
|
|
if (ret)
|
|
return ret;
|
|
ret = kempld_wdt_set_stage_timeout(wdt_data, pretimeout_stage,
|
|
wdd->timeout - pretimeout);
|
|
if (ret)
|
|
return ret;
|
|
|
|
wdt_data->pretimeout = pretimeout;
|
|
return 0;
|
|
}
|
|
|
|
static void kempld_wdt_update_timeouts(struct kempld_wdt_data *wdt_data)
|
|
{
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
struct kempld_wdt_stage *pretimeout_stage;
|
|
struct kempld_wdt_stage *timeout_stage;
|
|
unsigned int pretimeout, timeout;
|
|
|
|
pretimeout_stage = &wdt_data->stage[STAGE_PRETIMEOUT];
|
|
timeout_stage = &wdt_data->stage[STAGE_TIMEOUT];
|
|
|
|
kempld_get_mutex(pld);
|
|
pretimeout = kempld_wdt_get_timeout(wdt_data, pretimeout_stage);
|
|
timeout = kempld_wdt_get_timeout(wdt_data, timeout_stage);
|
|
kempld_release_mutex(pld);
|
|
|
|
if (pretimeout)
|
|
wdt_data->pretimeout = timeout;
|
|
else
|
|
wdt_data->pretimeout = 0;
|
|
|
|
wdt_data->wdd.timeout = pretimeout + timeout;
|
|
}
|
|
|
|
static int kempld_wdt_start(struct watchdog_device *wdd)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = watchdog_get_drvdata(wdd);
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
u8 status;
|
|
int ret;
|
|
|
|
ret = kempld_wdt_set_timeout(wdd, wdd->timeout);
|
|
if (ret)
|
|
return ret;
|
|
|
|
kempld_get_mutex(pld);
|
|
status = kempld_read8(pld, KEMPLD_WDT_CFG);
|
|
status |= KEMPLD_WDT_CFG_ENABLE;
|
|
kempld_write8(pld, KEMPLD_WDT_CFG, status);
|
|
status = kempld_read8(pld, KEMPLD_WDT_CFG);
|
|
kempld_release_mutex(pld);
|
|
|
|
/* Check if the watchdog was enabled */
|
|
if (!(status & KEMPLD_WDT_CFG_ENABLE))
|
|
return -EACCES;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kempld_wdt_stop(struct watchdog_device *wdd)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = watchdog_get_drvdata(wdd);
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
u8 status;
|
|
|
|
kempld_get_mutex(pld);
|
|
status = kempld_read8(pld, KEMPLD_WDT_CFG);
|
|
status &= ~KEMPLD_WDT_CFG_ENABLE;
|
|
kempld_write8(pld, KEMPLD_WDT_CFG, status);
|
|
status = kempld_read8(pld, KEMPLD_WDT_CFG);
|
|
kempld_release_mutex(pld);
|
|
|
|
/* Check if the watchdog was disabled */
|
|
if (status & KEMPLD_WDT_CFG_ENABLE)
|
|
return -EACCES;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int kempld_wdt_keepalive(struct watchdog_device *wdd)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = watchdog_get_drvdata(wdd);
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
|
|
kempld_get_mutex(pld);
|
|
kempld_write8(pld, KEMPLD_WDT_KICK, 'K');
|
|
kempld_release_mutex(pld);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static long kempld_wdt_ioctl(struct watchdog_device *wdd, unsigned int cmd,
|
|
unsigned long arg)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = watchdog_get_drvdata(wdd);
|
|
void __user *argp = (void __user *)arg;
|
|
int ret = -ENOIOCTLCMD;
|
|
int __user *p = argp;
|
|
int new_value;
|
|
|
|
switch (cmd) {
|
|
case WDIOC_SETPRETIMEOUT:
|
|
if (get_user(new_value, p))
|
|
return -EFAULT;
|
|
ret = kempld_wdt_set_pretimeout(wdd, new_value);
|
|
if (ret)
|
|
return ret;
|
|
ret = kempld_wdt_keepalive(wdd);
|
|
break;
|
|
case WDIOC_GETPRETIMEOUT:
|
|
ret = put_user(wdt_data->pretimeout, (int __user *)arg);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int kempld_wdt_probe_stages(struct watchdog_device *wdd)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = watchdog_get_drvdata(wdd);
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
struct kempld_wdt_stage *pretimeout_stage;
|
|
struct kempld_wdt_stage *timeout_stage;
|
|
u8 index, data, data_orig;
|
|
u32 mask;
|
|
int i, j;
|
|
|
|
pretimeout_stage = &wdt_data->stage[STAGE_PRETIMEOUT];
|
|
timeout_stage = &wdt_data->stage[STAGE_TIMEOUT];
|
|
|
|
pretimeout_stage->mask = 0;
|
|
timeout_stage->mask = 0;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
index = KEMPLD_WDT_STAGE_TIMEOUT(i);
|
|
mask = 0;
|
|
|
|
kempld_get_mutex(pld);
|
|
/* Probe each byte individually. */
|
|
for (j = 0; j < 4; j++) {
|
|
data_orig = kempld_read8(pld, index + j);
|
|
kempld_write8(pld, index + j, 0x00);
|
|
data = kempld_read8(pld, index + j);
|
|
/* A failed write means this byte is reserved */
|
|
if (data != 0x00)
|
|
break;
|
|
kempld_write8(pld, index + j, data_orig);
|
|
mask |= 0xff << (j * 8);
|
|
}
|
|
kempld_release_mutex(pld);
|
|
|
|
/* Assign available stages to timeout and pretimeout */
|
|
if (!timeout_stage->mask) {
|
|
timeout_stage->mask = mask;
|
|
timeout_stage->id = i;
|
|
} else {
|
|
if (pld->feature_mask & KEMPLD_FEATURE_BIT_NMI) {
|
|
pretimeout_stage->mask = timeout_stage->mask;
|
|
timeout_stage->mask = mask;
|
|
pretimeout_stage->id = timeout_stage->id;
|
|
timeout_stage->id = i;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!timeout_stage->mask)
|
|
return -ENODEV;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct watchdog_info kempld_wdt_info = {
|
|
.identity = "KEMPLD Watchdog",
|
|
.options = WDIOF_SETTIMEOUT |
|
|
WDIOF_KEEPALIVEPING |
|
|
WDIOF_MAGICCLOSE |
|
|
WDIOF_PRETIMEOUT
|
|
};
|
|
|
|
static struct watchdog_ops kempld_wdt_ops = {
|
|
.owner = THIS_MODULE,
|
|
.start = kempld_wdt_start,
|
|
.stop = kempld_wdt_stop,
|
|
.ping = kempld_wdt_keepalive,
|
|
.set_timeout = kempld_wdt_set_timeout,
|
|
.ioctl = kempld_wdt_ioctl,
|
|
};
|
|
|
|
static int kempld_wdt_probe(struct platform_device *pdev)
|
|
{
|
|
struct kempld_device_data *pld = dev_get_drvdata(pdev->dev.parent);
|
|
struct kempld_wdt_data *wdt_data;
|
|
struct device *dev = &pdev->dev;
|
|
struct watchdog_device *wdd;
|
|
u8 status;
|
|
int ret = 0;
|
|
|
|
wdt_data = devm_kzalloc(dev, sizeof(*wdt_data), GFP_KERNEL);
|
|
if (!wdt_data)
|
|
return -ENOMEM;
|
|
|
|
wdt_data->pld = pld;
|
|
wdd = &wdt_data->wdd;
|
|
wdd->parent = dev;
|
|
|
|
kempld_get_mutex(pld);
|
|
status = kempld_read8(pld, KEMPLD_WDT_CFG);
|
|
kempld_release_mutex(pld);
|
|
|
|
/* Enable nowayout if watchdog is already locked */
|
|
if (status & (KEMPLD_WDT_CFG_ENABLE_LOCK |
|
|
KEMPLD_WDT_CFG_GLOBAL_LOCK)) {
|
|
if (!nowayout)
|
|
dev_warn(dev,
|
|
"Forcing nowayout - watchdog lock enabled!\n");
|
|
nowayout = true;
|
|
}
|
|
|
|
wdd->info = &kempld_wdt_info;
|
|
wdd->ops = &kempld_wdt_ops;
|
|
|
|
watchdog_set_drvdata(wdd, wdt_data);
|
|
watchdog_set_nowayout(wdd, nowayout);
|
|
|
|
ret = kempld_wdt_probe_stages(wdd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
kempld_wdt_set_timeout(wdd, timeout);
|
|
kempld_wdt_set_pretimeout(wdd, pretimeout);
|
|
|
|
/* Check if watchdog is already enabled */
|
|
if (status & KEMPLD_WDT_CFG_ENABLE) {
|
|
/* Get current watchdog settings */
|
|
kempld_wdt_update_timeouts(wdt_data);
|
|
dev_info(dev, "Watchdog was already enabled\n");
|
|
}
|
|
|
|
platform_set_drvdata(pdev, wdt_data);
|
|
ret = watchdog_register_device(wdd);
|
|
if (ret)
|
|
return ret;
|
|
|
|
dev_info(dev, "Watchdog registered with %ds timeout\n", wdd->timeout);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void kempld_wdt_shutdown(struct platform_device *pdev)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = platform_get_drvdata(pdev);
|
|
|
|
kempld_wdt_stop(&wdt_data->wdd);
|
|
}
|
|
|
|
static int kempld_wdt_remove(struct platform_device *pdev)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = platform_get_drvdata(pdev);
|
|
struct watchdog_device *wdd = &wdt_data->wdd;
|
|
int ret = 0;
|
|
|
|
if (!nowayout)
|
|
ret = kempld_wdt_stop(wdd);
|
|
watchdog_unregister_device(wdd);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
/* Disable watchdog if it is active during suspend */
|
|
static int kempld_wdt_suspend(struct platform_device *pdev,
|
|
pm_message_t message)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = platform_get_drvdata(pdev);
|
|
struct kempld_device_data *pld = wdt_data->pld;
|
|
struct watchdog_device *wdd = &wdt_data->wdd;
|
|
|
|
kempld_get_mutex(pld);
|
|
wdt_data->pm_status_store = kempld_read8(pld, KEMPLD_WDT_CFG);
|
|
kempld_release_mutex(pld);
|
|
|
|
kempld_wdt_update_timeouts(wdt_data);
|
|
|
|
if (wdt_data->pm_status_store & KEMPLD_WDT_CFG_ENABLE)
|
|
return kempld_wdt_stop(wdd);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Enable watchdog and configure it if necessary */
|
|
static int kempld_wdt_resume(struct platform_device *pdev)
|
|
{
|
|
struct kempld_wdt_data *wdt_data = platform_get_drvdata(pdev);
|
|
struct watchdog_device *wdd = &wdt_data->wdd;
|
|
|
|
/*
|
|
* If watchdog was stopped before suspend be sure it gets disabled
|
|
* again, for the case BIOS has enabled it during resume
|
|
*/
|
|
if (wdt_data->pm_status_store & KEMPLD_WDT_CFG_ENABLE)
|
|
return kempld_wdt_start(wdd);
|
|
else
|
|
return kempld_wdt_stop(wdd);
|
|
}
|
|
#else
|
|
#define kempld_wdt_suspend NULL
|
|
#define kempld_wdt_resume NULL
|
|
#endif
|
|
|
|
static struct platform_driver kempld_wdt_driver = {
|
|
.driver = {
|
|
.name = "kempld-wdt",
|
|
.owner = THIS_MODULE,
|
|
},
|
|
.probe = kempld_wdt_probe,
|
|
.remove = kempld_wdt_remove,
|
|
.shutdown = kempld_wdt_shutdown,
|
|
.suspend = kempld_wdt_suspend,
|
|
.resume = kempld_wdt_resume,
|
|
};
|
|
|
|
module_platform_driver(kempld_wdt_driver);
|
|
|
|
MODULE_DESCRIPTION("KEM PLD Watchdog Driver");
|
|
MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
|
|
MODULE_LICENSE("GPL");
|