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Commit 41d78f74 authored by Alex Dubov's avatar Alex Dubov Committed by Pierre Ossman
Browse files

tifm_core: add suspend/resume infrastructure for tifm devices 



Signed-off-by: default avatarAlex Dubov <oakad@yahoo.com>
Signed-off-by: default avatarPierre Ossman <drzeus@drzeus.cx>
parent 8b40adab

drivers/misc/tifm_core.c

+34 −1
Original line number Diff line number Diff line
@@ -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);

}

include/linux/tifm.h

+3 −0
Original line number Diff line number Diff line
@@ -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;

};