xref: /device/soc/hisilicon/hi3516dv300/sdk_liteos/include/hi_i2c.h

/*
 * Copyright (c) 2021 HiSilicon (Shanghai) Technologies CO., LIMITED.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef _HI_I2C_H
#define _HI_I2C_H

/* /dev/i2c-X ioctl commands.  The ioctl's parameter is always an
 * unsigned long, except for:
 *      - I2C_FUNCS, takes pointer to an unsigned long
 *      - I2C_RDWR, takes pointer to struct i2c_rdwr_ioctl_data
 *      - I2C_SMBUS, takes pointer to struct i2c_smbus_ioctl_data
 */
#define I2C_RETRIES     0x0701  /* number of times a device address should
                   be polled when not acknowledging */
#define I2C_TIMEOUT     0x0702  /* set timeout in units of 10 ms */

/* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses
 * are NOT supported! (due to code brokenness)
 */
#define I2C_SLAVE       0x0703  /* Use this slave address */
#define I2C_SLAVE_FORCE 0x0706  /* Use this slave address, even if it
                   is already in use by a driver! */
#define I2C_TENBIT      0x0704  /* 0 for 7 bit addrs, != 0 for 10 bit */

#define I2C_FUNCS       0x0705  /* Get the adapter functionality mask */

#define I2C_RDWR        0x0707  /* Combined R/W transfer (one STOP only) */

#define I2C_PEC         0x0708  /* != 0 to use PEC with SMBus */
#define I2C_SMBUS       0x0720  /* SMBus transfer */
#define I2C_16BIT_REG   0x0709  /* 16BIT REG WIDTH */
#define I2C_16BIT_DATA  0x070a  /* 16BIT DATA WIDTH */

typedef struct hiI2C_DATA_S {
    unsigned char dev_addr;
    unsigned int reg_addr;
    unsigned int addr_byte_num;
    unsigned int data;
    unsigned int data_byte_num;
} I2C_DATA_S;

typedef I2C_DATA_S i2c_data;

#endif