1 /* 2 * Copyright (c) 2013 Corey Tabaka 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files 6 * (the "Software"), to deal in the Software without restriction, 7 * including without limitation the rights to use, copy, modify, merge, 8 * publish, distribute, sublicense, and/or sell copies of the Software, 9 * and to permit persons to whom the Software is furnished to do so, 10 * subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 #ifndef __DEV_CLASS_I2C_H 24 #define __DEV_CLASS_I2C_H 25 26 #include <compiler.h> 27 #include <dev/driver.h> 28 29 /* i2c interface */ 30 struct i2c_ops { 31 struct driver_ops std; 32 33 status_t (*write)(struct device *dev, uint8_t addr, const void *buf, size_t len); 34 status_t (*read)(struct device *dev, uint8_t addr, void *buf, size_t len); 35 36 status_t (*write_reg)(struct device *dev, uint8_t addr, uint8_t reg, uint8_t value); 37 status_t (*read_reg)(struct device *dev, uint8_t addr, uint8_t reg, void *value); 38 }; 39 40 __BEGIN_CDECLS 41 42 status_t class_i2c_write(struct device *dev, uint8_t addr, const void *buf, size_t len); 43 status_t class_i2c_read(struct device *dev, uint8_t addr, void *buf, size_t len); 44 status_t class_i2c_write_reg(struct device *dev, uint8_t addr, uint8_t reg, uint8_t value); 45 status_t class_i2c_read_reg(struct device *dev, uint8_t addr, uint8_t reg, void *value); 46 47 __END_CDECLS 48 49 #endif 50