Travis Geiselbrecht | bea5a4a | 2008-09-06 01:32:02 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2008 Travis Geiselbrecht |
| 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_I2C_H |
| 24 | #define __DEV_I2C_H |
| 25 | |
| 26 | void i2c_init(void); |
| 27 | void i2c_init_early(void); |
| 28 | |
| 29 | /* send and receive blocks of data */ |
| 30 | int i2c_transmit(int bus, uint8_t address, const void *buf, size_t count); |
| 31 | int i2c_receive(int bus, uint8_t address, void *buf, size_t count); |
| 32 | |
| 33 | /* a few convenience routines based on the usual way of accessing 8 byte registers on i2c slave devices */ |
| 34 | int i2c_write_reg(int bus, uint8_t address, uint8_t reg, uint8_t val); |
| 35 | int i2c_read_reg(int bus, uint8_t address, uint8_t reg, uint8_t *val); |
| 36 | |
| 37 | |
| 38 | #endif |
| 39 | |