1 #ifndef _LINUX_MEI_CL_BUS_H 2 #define _LINUX_MEI_CL_BUS_H 3 4 #include <linux/device.h> 5 #include <linux/uuid.h> 6 #include <linux/mod_devicetable.h> 7 8 struct mei_cl_device; 9 10 typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device, 11 u32 events, void *context); 12 13 /** 14 * struct mei_cl_device - MEI device handle 15 * An mei_cl_device pointer is returned from mei_add_device() 16 * and links MEI bus clients to their actual ME host client pointer. 17 * Drivers for MEI devices will get an mei_cl_device pointer 18 * when being probed and shall use it for doing ME bus I/O. 19 * 20 * @dev: linux driver model device pointer 21 * @me_cl: me client 22 * @cl: mei client 23 * @name: device name 24 * @event_work: async work to execute event callback 25 * @event_cb: Drivers register this callback to get asynchronous ME 26 * events (e.g. Rx buffer pending) notifications. 27 * @event_context: event callback run context 28 * @events: Events bitmask sent to the driver. 29 * @priv_data: client private data 30 */ 31 struct mei_cl_device { 32 struct device dev; 33 34 struct mei_me_client *me_cl; 35 struct mei_cl *cl; 36 char name[MEI_CL_NAME_SIZE]; 37 38 struct work_struct event_work; 39 mei_cl_event_cb_t event_cb; 40 void *event_context; 41 unsigned long events; 42 43 void *priv_data; 44 }; 45 46 struct mei_cl_driver { 47 struct device_driver driver; 48 const char *name; 49 50 const struct mei_cl_device_id *id_table; 51 52 int (*probe)(struct mei_cl_device *dev, 53 const struct mei_cl_device_id *id); 54 int (*remove)(struct mei_cl_device *dev); 55 }; 56 57 int __mei_cl_driver_register(struct mei_cl_driver *driver, 58 struct module *owner); 59 #define mei_cl_driver_register(driver) \ 60 __mei_cl_driver_register(driver, THIS_MODULE) 61 62 void mei_cl_driver_unregister(struct mei_cl_driver *driver); 63 64 ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length); 65 ssize_t mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length); 66 67 int mei_cl_register_event_cb(struct mei_cl_device *device, 68 mei_cl_event_cb_t read_cb, void *context); 69 70 #define MEI_CL_EVENT_RX 0 71 #define MEI_CL_EVENT_TX 1 72 73 void *mei_cl_get_drvdata(const struct mei_cl_device *device); 74 void mei_cl_set_drvdata(struct mei_cl_device *device, void *data); 75 76 int mei_cl_enable_device(struct mei_cl_device *device); 77 int mei_cl_disable_device(struct mei_cl_device *device); 78 79 #endif /* _LINUX_MEI_CL_BUS_H */ 80