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tifm_core: add suspend/resume infrastructure for tifm devices 

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Alex Dubov 2006-12-11 01:55:37 +11:00 committed by Pierre Ossman
parent 8b40adab9c
commit 41d78f7405
2 changed files with 37 additions and 1 deletions
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35
drivers/misc/tifm_core.c
View File

@ -14,7 +14,7 @@
#include <linux/idr.h>
#define DRIVER_NAME "tifm_core"
#define DRIVER_VERSION "0.6"
#define DRIVER_VERSION "0.7"
static DEFINE_IDR(tifm_adapter_idr);
static DEFINE_SPINLOCK(tifm_adapter_lock);
@ -60,10 +60,41 @@ static int tifm_uevent(struct device *dev, char **envp, int num_envp,
return 0;
}
#ifdef CONFIG_PM
static int tifm_device_suspend(struct device *dev, pm_message_t state)
{
struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
struct tifm_driver *drv = fm_dev->drv;
if (drv && drv->suspend)
return drv->suspend(fm_dev, state);
return 0;
}
static int tifm_device_resume(struct device *dev)
{
struct tifm_dev *fm_dev = container_of(dev, struct tifm_dev, dev);
struct tifm_driver *drv = fm_dev->drv;
if (drv && drv->resume)
return drv->resume(fm_dev);
return 0;
}
#else
#define tifm_device_suspend NULL
#define tifm_device_resume NULL
#endif /* CONFIG_PM */
static struct bus_type tifm_bus_type = {
.name = "tifm",
.match = tifm_match,
.uevent = tifm_uevent,
.suspend = tifm_device_suspend,
.resume = tifm_device_resume
};
static void tifm_free(struct class_device *cdev)
@ -233,6 +264,8 @@ int tifm_register_driver(struct tifm_driver *drv)
drv->driver.bus = &tifm_bus_type;
drv->driver.probe = tifm_device_probe;
drv->driver.remove = tifm_device_remove;
drv->driver.suspend = tifm_device_suspend;
drv->driver.resume = tifm_device_resume;
return driver_register(&drv->driver);
}

3
include/linux/tifm.h
View File

@ -101,6 +101,9 @@ struct tifm_driver {
tifm_media_id *id_table;
int (*probe)(struct tifm_dev *dev);
void (*remove)(struct tifm_dev *dev);
int (*suspend)(struct tifm_dev *dev,
pm_message_t state);
int (*resume)(struct tifm_dev *dev);
struct device_driver driver;
};