1 /* 2 * Copyright (c) 2021 HiSilicon (Shanghai) Technologies CO., LIMITED. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef _HI_I2C_H 17 #define _HI_I2C_H 18 19 /* /dev/i2c-X ioctl commands. The ioctl's parameter is always an 20 * unsigned long, except for: 21 * - I2C_FUNCS, takes pointer to an unsigned long 22 * - I2C_RDWR, takes pointer to struct i2c_rdwr_ioctl_data 23 * - I2C_SMBUS, takes pointer to struct i2c_smbus_ioctl_data 24 */ 25 #define I2C_RETRIES 0x0701 /* number of times a device address should 26 be polled when not acknowledging */ 27 #define I2C_TIMEOUT 0x0702 /* set timeout in units of 10 ms */ 28 29 /* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses 30 * are NOT supported! (due to code brokenness) 31 */ 32 #define I2C_SLAVE 0x0703 /* Use this slave address */ 33 #define I2C_SLAVE_FORCE 0x0706 /* Use this slave address, even if it 34 is already in use by a driver! */ 35 #define I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */ 36 37 #define I2C_FUNCS 0x0705 /* Get the adapter functionality mask */ 38 39 #define I2C_RDWR 0x0707 /* Combined R/W transfer (one STOP only) */ 40 41 #define I2C_PEC 0x0708 /* != 0 to use PEC with SMBus */ 42 #define I2C_SMBUS 0x0720 /* SMBus transfer */ 43 #define I2C_16BIT_REG 0x0709 /* 16BIT REG WIDTH */ 44 #define I2C_16BIT_DATA 0x070a /* 16BIT DATA WIDTH */ 45 46 typedef struct hiI2C_DATA_S { 47 unsigned char dev_addr; 48 unsigned int reg_addr; 49 unsigned int addr_byte_num; 50 unsigned int data; 51 unsigned int data_byte_num; 52 } I2C_DATA_S; 53 54 typedef I2C_DATA_S i2c_data; 55 56 #endif 57 58