1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef _LINUX_I2C_H 13 #define _LINUX_I2C_H 14 15 #include <linux/types.h> 16 17 struct i2c_msg { 18 __u16 addr; 19 __u16 flags; 20 #define I2C_M_TEN 0x10 21 #define I2C_M_RD 0x01 22 #define I2C_M_NOSTART 0x4000 23 #define I2C_M_REV_DIR_ADDR 0x2000 24 #define I2C_M_IGNORE_NAK 0x1000 25 #define I2C_M_NO_RD_ACK 0x0800 26 __u16 len; 27 __u8 *buf; 28 }; 29 30 #define I2C_FUNC_I2C 0x00000001 31 #define I2C_FUNC_10BIT_ADDR 0x00000002 32 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 33 #define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 34 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 35 #define I2C_FUNC_SMBUS_QUICK 0x00010000 36 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 37 #define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 38 #define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000 39 #define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000 40 #define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000 41 #define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000 42 #define I2C_FUNC_SMBUS_PROC_CALL 0x00800000 43 #define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 44 #define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 45 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 46 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 47 #define I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 0x10000000 48 #define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2 0x20000000 49 50 #define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE) 51 #define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | I2C_FUNC_SMBUS_WRITE_BYTE_DATA) 52 #define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | I2C_FUNC_SMBUS_WRITE_WORD_DATA) 53 #define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) 54 #define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) 55 #define I2C_FUNC_SMBUS_I2C_BLOCK_2 (I2C_FUNC_SMBUS_READ_I2C_BLOCK_2 | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK_2) 56 57 #define I2C_FUNC_SMBUS_EMUL (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_PROC_CALL | I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | I2C_FUNC_SMBUS_I2C_BLOCK) 58 59 #define I2C_SMBUS_BLOCK_MAX 32 60 union i2c_smbus_data { 61 __u8 byte; 62 __u16 word; 63 __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; 64 65 }; 66 67 #define I2C_SMBUS_READ 1 68 #define I2C_SMBUS_WRITE 0 69 70 #define I2C_SMBUS_QUICK 0 71 #define I2C_SMBUS_BYTE 1 72 #define I2C_SMBUS_BYTE_DATA 2 73 #define I2C_SMBUS_WORD_DATA 3 74 #define I2C_SMBUS_PROC_CALL 4 75 #define I2C_SMBUS_BLOCK_DATA 5 76 #define I2C_SMBUS_I2C_BLOCK_DATA 6 77 #define I2C_SMBUS_BLOCK_PROC_CALL 7 78 79 #define I2C_RETRIES 0x0701 80 81 #define I2C_TIMEOUT 0x0702 82 83 #define I2C_SLAVE 0x0703 84 85 #define I2C_SLAVE_FORCE 0x0706 86 87 #define I2C_TENBIT 0x0704 88 89 #define I2C_FUNCS 0x0705 90 #define I2C_RDWR 0x0707 91 #define I2C_PEC 0x0708 92 93 #define I2C_SMBUS 0x0720 94 95 #endif 96