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#ifndef _LINUX_MEI_CL_BUS_H
#define _LINUX_MEI_CL_BUS_H
#include <linux/device.h>
#include <linux/uuid.h>
#include <linux/mod_devicetable.h>
struct mei_cl_device;
struct mei_device;
typedef void (*mei_cldev_event_cb_t)(struct mei_cl_device *cldev,
u32 events, void *context);
/**
* struct mei_cl_device - MEI device handle
* An mei_cl_device pointer is returned from mei_add_device()
* and links MEI bus clients to their actual ME host client pointer.
* Drivers for MEI devices will get an mei_cl_device pointer
* when being probed and shall use it for doing ME bus I/O.
*
* @bus_list: device on the bus list
* @bus: parent mei device
* @dev: linux driver model device pointer
* @me_cl: me client
* @cl: mei client
* @name: device name
* @event_work: async work to execute event callback
* @event_cb: Drivers register this callback to get asynchronous ME
* events (e.g. Rx buffer pending) notifications.
* @event_context: event callback run context
* @events_mask: Events bit mask requested by driver.
* @events: Events bitmask sent to the driver.
*
* @do_match: wheather device can be matched with a driver
* @is_added: device is already scanned
* @priv_data: client private data
*/
struct mei_cl_device {
struct list_head bus_list;
struct mei_device *bus;
struct device dev;
struct mei_me_client *me_cl;
struct mei_cl *cl;
char name[MEI_CL_NAME_SIZE];
struct work_struct event_work;
mei_cldev_event_cb_t event_cb;
void *event_context;
unsigned long events_mask;
unsigned long events;
unsigned int do_match:1;
unsigned int is_added:1;
void *priv_data;
};
struct mei_cl_driver {
struct device_driver driver;
const char *name;
const struct mei_cl_device_id *id_table;
int (*probe)(struct mei_cl_device *cldev,
const struct mei_cl_device_id *id);
int (*remove)(struct mei_cl_device *cldev);
};
int __mei_cldev_driver_register(struct mei_cl_driver *cldrv,
struct module *owner);
#define mei_cldev_driver_register(cldrv) \
__mei_cldev_driver_register(cldrv, THIS_MODULE)
void mei_cldev_driver_unregister(struct mei_cl_driver *cldrv);
/**
* module_mei_cl_driver - Helper macro for registering mei cl driver
*
* @__mei_cldrv mei_cl_driver structure
*
* Helper macro for mei cl drivers which do not do anything special in module
* init/exit, for eliminating a boilerplate code.
*/
#define module_mei_cl_driver(__mei_cldrv) \
module_driver(__mei_cldrv, \
mei_cldev_driver_register,\
mei_cldev_driver_unregister)
ssize_t mei_cldev_send(struct mei_cl_device *cldev, u8 *buf, size_t length);
ssize_t mei_cldev_recv(struct mei_cl_device *cldev, u8 *buf, size_t length);
int mei_cldev_register_event_cb(struct mei_cl_device *cldev,
unsigned long event_mask,
mei_cldev_event_cb_t read_cb, void *context);
#define MEI_CL_EVENT_RX 0
#define MEI_CL_EVENT_TX 1
#define MEI_CL_EVENT_NOTIF 2
const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev);
u8 mei_cldev_ver(const struct mei_cl_device *cldev);
void *mei_cldev_get_drvdata(const struct mei_cl_device *cldev);
void mei_cldev_set_drvdata(struct mei_cl_device *cldev, void *data);
int mei_cldev_enable(struct mei_cl_device *cldev);
int mei_cldev_disable(struct mei_cl_device *cldev);
bool mei_cldev_enabled(struct mei_cl_device *cldev);
#endif /* _LINUX_MEI_CL_BUS_H */
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