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_cldev_event_cb_t)(struct mei_cl_device *cldev, 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_list: device on the bus list 22 * @bus: parent mei device 23 * @dev: linux driver model device pointer 24 * @me_cl: me client 25 * @cl: mei client 26 * @name: device name 27 * @event_work: async work to execute event callback 28 * @event_cb: Drivers register this callback to get asynchronous ME 29 * events (e.g. Rx buffer pending) notifications. 30 * @event_context: event callback run context 31 * @events_mask: Events bit mask requested by driver. 32 * @events: Events bitmask sent to the driver. 33 * 34 * @do_match: wheather device can be matched with a driver 35 * @is_added: device is already scanned 36 * @priv_data: client private data 37 */ 38 struct mei_cl_device { 39 struct list_head bus_list; 40 struct mei_device *bus; 41 struct device dev; 42 43 struct mei_me_client *me_cl; 44 struct mei_cl *cl; 45 char name[MEI_CL_NAME_SIZE]; 46 47 struct work_struct event_work; 48 mei_cldev_event_cb_t event_cb; 49 void *event_context; 50 unsigned long events_mask; 51 unsigned long events; 52 53 unsigned int do_match:1; 54 unsigned int is_added:1; 55 56 void *priv_data; 57 }; 58 59 struct mei_cl_driver { 60 struct device_driver driver; 61 const char *name; 62 63 const struct mei_cl_device_id *id_table; 64 65 int (*probe)(struct mei_cl_device *cldev, 66 const struct mei_cl_device_id *id); 67 int (*remove)(struct mei_cl_device *cldev); 68 }; 69 70 int __mei_cldev_driver_register(struct mei_cl_driver *cldrv, 71 struct module *owner); 72 #define mei_cldev_driver_register(cldrv) \ 73 __mei_cldev_driver_register(cldrv, THIS_MODULE) 74 75 void mei_cldev_driver_unregister(struct mei_cl_driver *cldrv); 76 77 ssize_t mei_cldev_send(struct mei_cl_device *cldev, u8 *buf, size_t length); 78 ssize_t mei_cldev_recv(struct mei_cl_device *cldev, u8 *buf, size_t length); 79 80 int mei_cldev_register_event_cb(struct mei_cl_device *cldev, 81 unsigned long event_mask, 82 mei_cldev_event_cb_t read_cb, void *context); 83 84 #define MEI_CL_EVENT_RX 0 85 #define MEI_CL_EVENT_TX 1 86 #define MEI_CL_EVENT_NOTIF 2 87 88 const uuid_le *mei_cldev_uuid(const struct mei_cl_device *cldev); 89 u8 mei_cldev_ver(const struct mei_cl_device *cldev); 90 91 void *mei_cldev_get_drvdata(const struct mei_cl_device *cldev); 92 void mei_cldev_set_drvdata(struct mei_cl_device *cldev, void *data); 93 94 int mei_cldev_enable(struct mei_cl_device *cldev); 95 int mei_cldev_disable(struct mei_cl_device *cldev); 96 bool mei_cldev_enabled(struct mei_cl_device *cldev); 97 98 #endif /* _LINUX_MEI_CL_BUS_H */ 99