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Merge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-watchdog

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* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-watchdog: (25 commits)
  watchdog: WatchDog Timer Driver Core - Add minimum and max timeout
  watchdog: WatchDog Timer Driver Core - Add ioctl call
  watchdog: WatchDog Timer Driver Core - Add nowayout feature
  watchdog: WatchDog Timer Driver Core - Add Magic Close feature
  watchdog: WatchDog Timer Driver Core - Add WDIOC_SETTIMEOUT and WDIOC_GETTIMEOUT ioctl
  watchdog: WatchDog Timer Driver Core - Add WDIOC_SETOPTIONS ioctl
  watchdog: WatchDog Timer Driver Core - Add WDIOC_KEEPALIVE ioctl
  watchdog: WatchDog Timer Driver Core - Add basic ioctl functionality
  watchdog: WatchDog Timer Driver Core - Add basic framework
  watchdog: hpwdt: add next gen HP servers
  watchdog: it8712f_wdt.c: improve includes
  watchdog: at91sam9/wdt: move register header to drivers
  watchdog: Add Xilinx watchdog timer driver
  watchdog: remove empty pm-functions
  watchdog: sp805: Flush posted writes in enable/disable.
  watchdog: sp805: Don't write 0 to the load value register.
  watchdog: imx2_wdt: add device tree probe support
  watchdog: s3c2410: Add support for device tree based probe
  watchdog: mpcore_wdt: Add suspend/resume support.
  watchdog: mtx1-wdt: use dev_{err,info} instead of printk()
  ...
This commit is contained in:
Linus Torvalds
2011-07-29 23:28:47 -07:00
parent 59ed2bb274 3f43f68e29
commit 2313bcdcc9
25 changed files with 2106 additions and 472 deletions
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78
include/linux/watchdog.h
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@@ -59,6 +59,84 @@ struct watchdog_info {
#define WATCHDOG_NOWAYOUT 0
#endif
struct watchdog_ops;
struct watchdog_device;
/** struct watchdog_ops - The watchdog-devices operations
*
* @owner: The module owner.
* @start: The routine for starting the watchdog device.
* @stop: The routine for stopping the watchdog device.
* @ping: The routine that sends a keepalive ping to the watchdog device.
* @status: The routine that shows the status of the watchdog device.
* @set_timeout:The routine for setting the watchdog devices timeout value.
* @ioctl: The routines that handles extra ioctl calls.
*
* The watchdog_ops structure contains a list of low-level operations
* that control a watchdog device. It also contains the module that owns
* these operations. The start and stop function are mandatory, all other
* functions are optonal.
*/
struct watchdog_ops {
struct module *owner;
/* mandatory operations */
int (*start)(struct watchdog_device *);
int (*stop)(struct watchdog_device *);
/* optional operations */
int (*ping)(struct watchdog_device *);
unsigned int (*status)(struct watchdog_device *);
int (*set_timeout)(struct watchdog_device *, unsigned int);
long (*ioctl)(struct watchdog_device *, unsigned int, unsigned long);
};
/** struct watchdog_device - The structure that defines a watchdog device
*
* @info: Pointer to a watchdog_info structure.
* @ops: Pointer to the list of watchdog operations.
* @bootstatus: Status of the watchdog device at boot.
* @timeout: The watchdog devices timeout value.
* @min_timeout:The watchdog devices minimum timeout value.
* @max_timeout:The watchdog devices maximum timeout value.
* @driver-data:Pointer to the drivers private data.
* @status: Field that contains the devices internal status bits.
*
* The watchdog_device structure contains all information about a
* watchdog timer device.
*
* The driver-data field may not be accessed directly. It must be accessed
* via the watchdog_set_drvdata and watchdog_get_drvdata helpers.
*/
struct watchdog_device {
const struct watchdog_info *info;
const struct watchdog_ops *ops;
unsigned int bootstatus;
unsigned int timeout;
unsigned int min_timeout;
unsigned int max_timeout;
void *driver_data;
unsigned long status;
/* Bit numbers for status flags */
#define WDOG_ACTIVE 0 /* Is the watchdog running/active */
#define WDOG_DEV_OPEN 1 /* Opened via /dev/watchdog ? */
#define WDOG_ALLOW_RELEASE 2 /* Did we receive the magic char ? */
#define WDOG_NO_WAY_OUT 3 /* Is 'nowayout' feature set ? */
};
/* Use the following functions to manipulate watchdog driver specific data */
static inline void watchdog_set_drvdata(struct watchdog_device *wdd, void *data)
{
wdd->driver_data = data;
}
static inline void *watchdog_get_drvdata(struct watchdog_device *wdd)
{
return wdd->driver_data;
}
/* drivers/watchdog/core/watchdog_core.c */
extern int watchdog_register_device(struct watchdog_device *);
extern void watchdog_unregister_device(struct watchdog_device *);
#endif /* __KERNEL__ */
#endif /* ifndef _LINUX_WATCHDOG_H */