1 /* 2 * This header was generated from the Linux kernel headers by update_headers.py, 3 * to provide necessary information from kernel to userspace, such as constants, 4 * structures, and macros, and thus, contains no copyrightable information. 5 */ 6 #ifndef _UAPI_LINUX_I2C_H 7 #define _UAPI_LINUX_I2C_H 8 #include <linux/types.h> 9 struct i2c_msg { 10 __u16 addr; 11 __u16 flags; 12 #define I2C_M_RD 0x0001 13 14 #define I2C_M_TEN 0x0010 15 #define I2C_M_DMA_SAFE 0x0200 16 17 18 #define I2C_M_RECV_LEN 0x0400 19 #define I2C_M_NO_RD_ACK 0x0800 20 #define I2C_M_IGNORE_NAK 0x1000 21 #define I2C_M_REV_DIR_ADDR 0x2000 22 #define I2C_M_NOSTART 0x4000 23 #define I2C_M_STOP 0x8000 24 __u16 len; 25 __u8 *buf; 26 }; 27 #define I2C_FUNC_I2C 0x00000001 28 #define I2C_FUNC_10BIT_ADDR 0x00000002 29 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 30 #define I2C_FUNC_SMBUS_PEC 0x00000008 31 #define I2C_FUNC_NOSTART 0x00000010 32 #define I2C_FUNC_SLAVE 0x00000020 33 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 34 #define I2C_FUNC_SMBUS_QUICK 0x00010000 35 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 36 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 37 #define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000 38 #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000 39 #define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000 40 #define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000 41 #define I2C_FUNC_SMBUS_PROC_CALL 0x00800000 42 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 43 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 44 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 45 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 46 #define I2C_FUNC_SMBUS_HOST_NOTIFY 0x10000000 47 #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ 48 I2C_FUNC_SMBUS_WRITE_BYTE) 49 #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ 50 I2C_FUNC_SMBUS_WRITE_BYTE_DATA) 51 #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ 52 I2C_FUNC_SMBUS_WRITE_WORD_DATA) 53 #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ 54 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) 55 #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ 56 I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) 57 #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | \ 58 I2C_FUNC_SMBUS_BYTE | \ 59 I2C_FUNC_SMBUS_BYTE_DATA | \ 60 I2C_FUNC_SMBUS_WORD_DATA | \ 61 I2C_FUNC_SMBUS_PROC_CALL | \ 62 I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ 63 I2C_FUNC_SMBUS_I2C_BLOCK | \ 64 I2C_FUNC_SMBUS_PEC) 65 #define I2C_SMBUS_BLOCK_MAX 32 66 union i2c_smbus_data { 67 __u8 byte; 68 __u16 word; 69 __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; 70 71 }; 72 #define I2C_SMBUS_READ 1 73 #define I2C_SMBUS_WRITE 0 74 #define I2C_SMBUS_QUICK 0 75 #define I2C_SMBUS_BYTE 1 76 #define I2C_SMBUS_BYTE_DATA 2 77 #define I2C_SMBUS_WORD_DATA 3 78 #define I2C_SMBUS_PROC_CALL 4 79 #define I2C_SMBUS_BLOCK_DATA 5 80 #define I2C_SMBUS_I2C_BLOCK_BROKEN 6 81 #define I2C_SMBUS_BLOCK_PROC_CALL 7 82 #define I2C_SMBUS_I2C_BLOCK_DATA 8 83 #endif 84