android_kernel_xiaomi_sm8350/include/asm-s390/ccwgroup.h
Ursula Braun 022b660ae5 ccwgroup: Unify parsing for group attribute.
Instead of having each driver for ccwgroup slave device parsing the
input itself and calling ccwgroup_create(), introduce a new function
ccwgroup_create_from_string() and handle parsing inside the ccwgroup
core.

Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2008-04-29 01:56:29 -04:00

70 lines
2.0 KiB
C

#ifndef S390_CCWGROUP_H
#define S390_CCWGROUP_H
struct ccw_device;
struct ccw_driver;
/**
* struct ccwgroup_device - ccw group device
* @creator_id: unique number of the driver
* @state: online/offline state
* @count: number of attached slave devices
* @dev: embedded device structure
* @cdev: variable number of slave devices, allocated as needed
*/
struct ccwgroup_device {
unsigned long creator_id;
enum {
CCWGROUP_OFFLINE,
CCWGROUP_ONLINE,
} state;
/* private: */
atomic_t onoff;
struct mutex reg_mutex;
/* public: */
unsigned int count;
struct device dev;
struct ccw_device *cdev[0];
};
/**
* struct ccwgroup_driver - driver for ccw group devices
* @owner: driver owner
* @name: driver name
* @max_slaves: maximum number of slave devices
* @driver_id: unique id
* @probe: function called on probe
* @remove: function called on remove
* @set_online: function called when device is set online
* @set_offline: function called when device is set offline
* @shutdown: function called when device is shut down
* @driver: embedded driver structure
*/
struct ccwgroup_driver {
struct module *owner;
char *name;
int max_slaves;
unsigned long driver_id;
int (*probe) (struct ccwgroup_device *);
void (*remove) (struct ccwgroup_device *);
int (*set_online) (struct ccwgroup_device *);
int (*set_offline) (struct ccwgroup_device *);
void (*shutdown)(struct ccwgroup_device *);
struct device_driver driver;
};
extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver);
extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver);
int ccwgroup_create_from_string(struct device *root, unsigned int creator_id,
struct ccw_driver *cdrv, int num_devices,
const char *buf);
extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev);
extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev);
#define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev)
#define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver)
#endif