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 struct mei_device; 10 11 typedef void (*mei_cl_event_cb_t)(struct mei_cl_device *device, 12 u32 events, void *context); 13 14 /** 15 * struct mei_cl_device - MEI device handle 16 * An mei_cl_device pointer is returned from mei_add_device() 17 * and links MEI bus clients to their actual ME host client pointer. 18 * Drivers for MEI devices will get an mei_cl_device pointer 19 * when being probed and shall use it for doing ME bus I/O. 20 * 21 * @bus: parent mei device 22 * @dev: linux driver model device pointer 23 * @me_cl: me client 24 * @cl: mei client 25 * @name: device name 26 * @event_work: async work to execute event callback 27 * @event_cb: Drivers register this callback to get asynchronous ME 28 * events (e.g. Rx buffer pending) notifications. 29 * @event_context: event callback run context 30 * @events: Events bitmask sent to the driver. 31 * @priv_data: client private data 32 */ 33 struct mei_cl_device { 34 struct mei_device *bus; 35 struct device dev; 36 37 struct mei_me_client *me_cl; 38 struct mei_cl *cl; 39 char name[MEI_CL_NAME_SIZE]; 40 41 struct work_struct event_work; 42 mei_cl_event_cb_t event_cb; 43 void *event_context; 44 unsigned long events; 45 46 void *priv_data; 47 }; 48 49 struct mei_cl_driver { 50 struct device_driver driver; 51 const char *name; 52 53 const struct mei_cl_device_id *id_table; 54 55 int (*probe)(struct mei_cl_device *dev, 56 const struct mei_cl_device_id *id); 57 int (*remove)(struct mei_cl_device *dev); 58 }; 59 60 int __mei_cl_driver_register(struct mei_cl_driver *driver, 61 struct module *owner); 62 #define mei_cl_driver_register(driver) \ 63 __mei_cl_driver_register(driver, THIS_MODULE) 64 65 void mei_cl_driver_unregister(struct mei_cl_driver *driver); 66 67 ssize_t mei_cl_send(struct mei_cl_device *device, u8 *buf, size_t length); 68 ssize_t mei_cl_recv(struct mei_cl_device *device, u8 *buf, size_t length); 69 70 int mei_cl_register_event_cb(struct mei_cl_device *device, 71 mei_cl_event_cb_t read_cb, void *context); 72 73 #define MEI_CL_EVENT_RX 0 74 #define MEI_CL_EVENT_TX 1 75 76 void *mei_cl_get_drvdata(const struct mei_cl_device *device); 77 void mei_cl_set_drvdata(struct mei_cl_device *device, void *data); 78 79 int mei_cl_enable_device(struct mei_cl_device *device); 80 int mei_cl_disable_device(struct mei_cl_device *device); 81 82 #endif /* _LINUX_MEI_CL_BUS_H */ 83