/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */ /* * i2c-dev.h - I2C bus char device interface * * Copyright (C) 1995-97 Simon G. Vogl * Copyright (C) 1998-99 Frodo Looijaard <[email protected]> */ #ifndef _UAPI_LINUX_I2C_DEV_H #define _UAPI_LINUX_I2C_DEV_H #include <linux/types.h> #include <linux/compiler.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 … #define I2C_TIMEOUT … /* NOTE: Slave address is 7 or 10 bits, but 10-bit addresses * are NOT supported! (due to code brokenness) */ #define I2C_SLAVE … #define I2C_SLAVE_FORCE … #define I2C_TENBIT … #define I2C_FUNCS … #define I2C_RDWR … #define I2C_PEC … #define I2C_SMBUS … /* This is the structure as used in the I2C_SMBUS ioctl call */ struct i2c_smbus_ioctl_data { … }; /* This is the structure as used in the I2C_RDWR ioctl call */ struct i2c_rdwr_ioctl_data { … }; #define I2C_RDWR_IOCTL_MAX_MSGS … /* Originally defined with a typo, keep it for compatibility */ #define I2C_RDRW_IOCTL_MAX_MSGS … #endif /* _UAPI_LINUX_I2C_DEV_H */
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