56 lines
1.7 KiB
C
56 lines
1.7 KiB
C
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/*
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Copyright (c), 2001-2022, Shenshu Tech. Co., Ltd.
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*/
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#ifndef OT_I2C_H
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#define OT_I2C_H
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#include "ot_type.h"
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif
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#endif /* End of #ifdef __cplusplus */
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/* /dev/i2c-X ioctl commands. The ioctl's parameter is always an
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* unsigned long, except for:
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* - I2C_FUNCS, takes pointer to an unsigned long
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* - I2C_RDWR, takes pointer to struct i2c_rdwr_ioctl_data
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* - I2C_SMBUS, takes pointer to struct i2c_smbus_ioctl_data
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* */
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#define OT_I2C_RETRIES 0x0701 /* number of times a device address should be polled when not acknowledging */
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#define OT_I2C_TIMEOUT 0x0702 /* set timeout in units of 10 ms */
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/* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses
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* are NOT supported! (due to code brokenness)
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* */
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#define OT_I2C_SLAVE 0x0703 /* Use this slave address */
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#define OT_I2C_SLAVE_FORCE 0x0706 /* Use this slave address, even if it is already in use by a driver! */
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#define OT_I2C_TENBIT 0x0704 /* 0 for 7 bit addrs, != 0 for 10 bit */
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#define OT_I2C_FUNCS 0x0705 /* Get the adapter functionality mask */
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#define OT_I2C_RDWR 0x0707 /* Combined R/W transfer (one STOP only) */
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#define OT_I2C_PEC 0x0708 /* != 0 to use PEC with SMBus */
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#define OT_I2C_SMBUS 0x0720 /* SMBus transfer */
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#define OT_I2C_16BIT_REG 0x0709 /* 16BIT REG WIDTH */
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#define OT_I2C_16BIT_DATA 0x070a /* 16BIT DATA WIDTH */
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typedef struct {
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td_u8 dev_addr;
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td_u32 reg_addr;
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td_u32 addr_byte_num;
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td_u32 data;
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td_u32 data_byte_num;
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} ot_i2c_data;
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#ifdef __cplusplus
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#if __cplusplus
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}
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#endif
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#endif /* End of #ifdef __cplusplus */
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#endif /* OT_I2C_H */
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