1 /* FSI device & driver interfaces 2 * 3 * Copyright (C) IBM Corporation 2016 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 15 #ifndef LINUX_FSI_H 16 #define LINUX_FSI_H 17 18 #include <linux/device.h> 19 20 struct fsi_device { 21 struct device dev; 22 u8 engine_type; 23 u8 version; 24 u8 unit; 25 struct fsi_slave *slave; 26 uint32_t addr; 27 uint32_t size; 28 }; 29 30 extern int fsi_device_read(struct fsi_device *dev, uint32_t addr, 31 void *val, size_t size); 32 extern int fsi_device_write(struct fsi_device *dev, uint32_t addr, 33 const void *val, size_t size); 34 extern int fsi_device_peek(struct fsi_device *dev, void *val); 35 36 struct fsi_device_id { 37 u8 engine_type; 38 u8 version; 39 }; 40 41 #define FSI_VERSION_ANY 0 42 43 #define FSI_DEVICE(t) \ 44 .engine_type = (t), .version = FSI_VERSION_ANY, 45 46 #define FSI_DEVICE_VERSIONED(t, v) \ 47 .engine_type = (t), .version = (v), 48 49 struct fsi_driver { 50 struct device_driver drv; 51 const struct fsi_device_id *id_table; 52 }; 53 54 #define to_fsi_dev(devp) container_of(devp, struct fsi_device, dev) 55 #define to_fsi_drv(drvp) container_of(drvp, struct fsi_driver, drv) 56 57 extern struct bus_type fsi_bus_type; 58 59 #endif /* LINUX_FSI_H */ 60