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Diffstat (limited to 'meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/src/include/i2c-dev.h')
| -rw-r--r-- | meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/src/include/i2c-dev.h | 364 |
1 files changed, 0 insertions, 364 deletions
diff --git a/meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/src/include/i2c-dev.h b/meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/src/include/i2c-dev.h deleted file mode 100644 index 3b67afc..0000000 --- a/meta-facebook/meta-yosemite/recipes-yosemite/fbutils/files/src/include/i2c-dev.h +++ /dev/null @@ -1,364 +0,0 @@ -/* - i2c-dev.h - i2c-bus driver, char device interface - - Copyright (C) 1995-97 Simon G. Vogl - Copyright (C) 1998-99 Frodo Looijaard <frodol@dds.nl> - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, - MA 02110-1301 USA. -*/ - -#ifndef _LINUX_I2C_DEV_H -#define _LINUX_I2C_DEV_H - -#include <linux/types.h> -#include <sys/ioctl.h> -#include <stddef.h> -#include <string.h> - - -/* -- i2c.h -- */ - -#define _I2C_MIN(a, b) (((a) <= (b)) ? (a) : (b)) - -/* - * I2C Message - used for pure i2c transaction, also from /dev interface - */ -struct i2c_msg { - __u16 addr; /* slave address */ - unsigned short flags; -#define I2C_CLIENT_PEC 0x04 /* Use Packet Error Checking */ -#define I2C_M_TEN 0x0010 /* this is a ten bit chip address */ -#define I2C_M_RD 0x0001 /* read data, from slave to master */ -#define I2C_S_EN 0x0002 /* read data, from slave to master */ -#define I2C_M_NOSTART 0x4000 /* if I2C_FUNC_PROTOCOL_MANGLING */ -#define I2C_M_REV_DIR_ADDR 0x2000 /* if I2C_FUNC_PROTOCOL_MANGLING */ -#define I2C_M_IGNORE_NAK 0x1000 /* if I2C_FUNC_PROTOCOL_MANGLING */ -#define I2C_M_NO_RD_ACK 0x0800 /* if I2C_FUNC_PROTOCOL_MANGLING */ -#define I2C_M_RECV_LEN 0x0400 /* length will be first received byte */ - short len; /* msg length */ - char *buf; /* pointer to msg data */ -}; - -/* To determine what functionality is present */ - -#define I2C_FUNC_I2C 0x00000001 -#define I2C_FUNC_10BIT_ADDR 0x00000002 -#define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */ -#define I2C_FUNC_SMBUS_PEC 0x00000008 -#define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ -#define I2C_FUNC_SMBUS_QUICK 0x00010000 -#define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 -#define I2C_FUNC_SMBUS_WRITE_BYTE 0x00040000 -#define I2C_FUNC_SMBUS_READ_BYTE_DATA 0x00080000 -#define I2C_FUNC_SMBUS_WRITE_BYTE_DATA 0x00100000 -#define I2C_FUNC_SMBUS_READ_WORD_DATA 0x00200000 -#define I2C_FUNC_SMBUS_WRITE_WORD_DATA 0x00400000 -#define I2C_FUNC_SMBUS_PROC_CALL 0x00800000 -#define I2C_FUNC_SMBUS_READ_BLOCK_DATA 0x01000000 -#define I2C_FUNC_SMBUS_WRITE_BLOCK_DATA 0x02000000 -#define I2C_FUNC_SMBUS_READ_I2C_BLOCK 0x04000000 /* I2C-like block xfer */ -#define I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 0x08000000 /* w/ 1-byte reg. addr. */ - -#define I2C_FUNC_SMBUS_BYTE (I2C_FUNC_SMBUS_READ_BYTE | \ - I2C_FUNC_SMBUS_WRITE_BYTE) -#define I2C_FUNC_SMBUS_BYTE_DATA (I2C_FUNC_SMBUS_READ_BYTE_DATA | \ - I2C_FUNC_SMBUS_WRITE_BYTE_DATA) -#define I2C_FUNC_SMBUS_WORD_DATA (I2C_FUNC_SMBUS_READ_WORD_DATA | \ - I2C_FUNC_SMBUS_WRITE_WORD_DATA) -#define I2C_FUNC_SMBUS_BLOCK_DATA (I2C_FUNC_SMBUS_READ_BLOCK_DATA | \ - I2C_FUNC_SMBUS_WRITE_BLOCK_DATA) -#define I2C_FUNC_SMBUS_I2C_BLOCK (I2C_FUNC_SMBUS_READ_I2C_BLOCK | \ - I2C_FUNC_SMBUS_WRITE_I2C_BLOCK) - -/* Old name, for compatibility */ -#define I2C_FUNC_SMBUS_HWPEC_CALC I2C_FUNC_SMBUS_PEC - -/* - * Data for SMBus Messages - */ -#define I2C_SMBUS_BLOCK_MAX 32 /* As specified in SMBus standard */ -#define I2C_SMBUS_I2C_BLOCK_MAX 32 /* Not specified but we use same structure */ -union i2c_smbus_data { - __u8 byte; - __u16 word; - __u8 block[I2C_SMBUS_BLOCK_MAX + 2]; /* block[0] is used for length */ - /* and one more for PEC */ -}; - -#define I2C_SMBUS_BLOCK_LARGE_MAX 240 -union i2c_smbus_large_data { - union i2c_smbus_data data; - __u8 block[I2C_SMBUS_BLOCK_LARGE_MAX + 2]; /* block[0] is used for length */ - /* and one more for PEC */ -}; - -/* smbus_access read or write markers */ -#define I2C_SMBUS_READ 1 -#define I2C_SMBUS_WRITE 0 - -/* SMBus transaction types (size parameter in the above functions) - Note: these no longer correspond to the (arbitrary) PIIX4 internal codes! */ -#define I2C_SMBUS_QUICK 0 -#define I2C_SMBUS_BYTE 1 -#define I2C_SMBUS_BYTE_DATA 2 -#define I2C_SMBUS_WORD_DATA 3 -#define I2C_SMBUS_PROC_CALL 4 -#define I2C_SMBUS_BLOCK_DATA 5 -#define I2C_SMBUS_I2C_BLOCK_BROKEN 6 -#define I2C_SMBUS_BLOCK_PROC_CALL 7 /* SMBus 2.0 */ -#define I2C_SMBUS_I2C_BLOCK_DATA 8 -#define I2C_SMBUS_BLOCK_LARGE_DATA 9 - - -/* /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_SLAVE_RDWR 0x0709 /* Slave Read/Write */ - -#define I2C_PEC 0x0708 /* != 0 to use PEC with SMBus */ -#define I2C_SMBUS 0x0720 /* SMBus transfer */ - - -/* This is the structure as used in the I2C_SMBUS ioctl call */ -struct i2c_smbus_ioctl_data { - __u8 read_write; - __u8 command; - __u32 size; - union i2c_smbus_data *data; -}; - -/* This is the structure as used in the I2C_RDWR ioctl call */ -struct i2c_rdwr_ioctl_data { - struct i2c_msg *msgs; /* pointers to i2c_msgs */ - __u32 nmsgs; /* number of i2c_msgs */ -}; - -#define I2C_RDRW_IOCTL_MAX_MSGS 42 - - -static inline __s32 i2c_smbus_access(int file, char read_write, __u8 command, - int size, union i2c_smbus_data *data) -{ - struct i2c_smbus_ioctl_data args; - - args.read_write = read_write; - args.command = command; - args.size = size; - args.data = data; - return ioctl(file,I2C_SMBUS,&args); -} - - -static inline __s32 i2c_smbus_write_quick(int file, __u8 value) -{ - return i2c_smbus_access(file,value,0,I2C_SMBUS_QUICK,NULL); -} - -static inline __s32 i2c_smbus_read_byte(int file) -{ - union i2c_smbus_data data; - if (i2c_smbus_access(file,I2C_SMBUS_READ,0,I2C_SMBUS_BYTE,&data)) - return -1; - else - return 0x0FF & data.byte; -} - -static inline __s32 i2c_smbus_write_byte(int file, __u8 value) -{ - return i2c_smbus_access(file,I2C_SMBUS_WRITE,value, - I2C_SMBUS_BYTE,NULL); -} - -static inline __s32 i2c_smbus_read_byte_data(int file, __u8 command) -{ - union i2c_smbus_data data; - if (i2c_smbus_access(file,I2C_SMBUS_READ,command, - I2C_SMBUS_BYTE_DATA,&data)) - return -1; - else - return 0x0FF & data.byte; -} - -static inline __s32 i2c_smbus_write_byte_data(int file, __u8 command, - __u8 value) -{ - union i2c_smbus_data data; - data.byte = value; - return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, - I2C_SMBUS_BYTE_DATA, &data); -} - -static inline __s32 i2c_smbus_read_word_data(int file, __u8 command) -{ - union i2c_smbus_data data; - if (i2c_smbus_access(file,I2C_SMBUS_READ,command, - I2C_SMBUS_WORD_DATA,&data)) - return -1; - else - return 0x0FFFF & data.word; -} - -static inline __s32 i2c_smbus_write_word_data(int file, __u8 command, - __u16 value) -{ - union i2c_smbus_data data; - data.word = value; - return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, - I2C_SMBUS_WORD_DATA, &data); -} - -static inline __s32 i2c_smbus_process_call(int file, __u8 command, __u16 value) -{ - union i2c_smbus_data data; - data.word = value; - if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command, - I2C_SMBUS_PROC_CALL,&data)) - return -1; - else - return 0x0FFFF & data.word; -} - - -/* Returns the number of read bytes */ -static inline __s32 i2c_smbus_read_block_data(int file, __u8 command, - __u8 *values) -{ - union i2c_smbus_data data; - if (i2c_smbus_access(file,I2C_SMBUS_READ,command, - I2C_SMBUS_BLOCK_DATA,&data)) - return -1; - else { - memcpy(values, &data.block[1], _I2C_MIN(data.block[0], I2C_SMBUS_BLOCK_MAX)); - return data.block[0]; - } -} - -static inline __s32 i2c_smbus_write_block_data(int file, __u8 command, - __u8 length, const __u8 *values) -{ - union i2c_smbus_data data; - if (length > 32) - length = 32; - memcpy(&data.block[1], values, length); - data.block[0] = length; - return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, - I2C_SMBUS_BLOCK_DATA, &data); -} - -static inline __s32 i2c_smbus_read_block_large_data(int file, __u8 command, - __u8 *values) -{ - union i2c_smbus_large_data data; - if (i2c_smbus_access(file, I2C_SMBUS_READ, command, - I2C_SMBUS_BLOCK_LARGE_DATA, - (union i2c_smbus_data *)&data)) { - return -1; - } else { - /* the first byte is the length which is not copied */ - memcpy(values, &data.block[1], _I2C_MIN(data.block[0], I2C_SMBUS_BLOCK_LARGE_MAX)); - return data.block[0]; - } -} - -static inline __s32 i2c_smbus_write_block_large_data(int file, __u8 command, - __u8 length, - const __u8 *values) -{ - union i2c_smbus_large_data data; - if (length > I2C_SMBUS_BLOCK_LARGE_MAX) { - length = I2C_SMBUS_BLOCK_LARGE_MAX; - } - data.block[0] = length; - memcpy(&data.block[1], values, length); - return i2c_smbus_access(file, I2C_SMBUS_WRITE, command, - I2C_SMBUS_BLOCK_LARGE_DATA, - (union i2c_smbus_data *)&data); -} - -/* Returns the number of read bytes */ -/* Until kernel 2.6.22, the length is hardcoded to 32 bytes. If you - ask for less than 32 bytes, your code will only work with kernels - 2.6.23 and later. */ -static inline __s32 i2c_smbus_read_i2c_block_data(int file, __u8 command, - __u8 length, __u8 *values) -{ - union i2c_smbus_data data; - - if (length > 32) - length = 32; - data.block[0] = length; - if (i2c_smbus_access(file,I2C_SMBUS_READ,command, - length == 32 ? I2C_SMBUS_I2C_BLOCK_BROKEN : - I2C_SMBUS_I2C_BLOCK_DATA,&data)) - return -1; - else { - memcpy(values, &data.block[1], _I2C_MIN(data.block[0], I2C_SMBUS_BLOCK_MAX)); - return data.block[0]; - } -} - -static inline __s32 i2c_smbus_write_i2c_block_data(int file, __u8 command, - __u8 length, - const __u8 *values) -{ - union i2c_smbus_data data; - if (length > 32) - length = 32; - memcpy(&data.block[1], values, length); - data.block[0] = length; - return i2c_smbus_access(file,I2C_SMBUS_WRITE,command, - I2C_SMBUS_I2C_BLOCK_BROKEN, &data); -} - -/* Returns the number of read bytes */ -static inline __s32 i2c_smbus_block_process_call(int file, __u8 command, - __u8 length, __u8 *values) -{ - union i2c_smbus_data data; - if (length > 32) - length = 32; - memcpy(&data.block[1], values, length); - data.block[0] = length; - if (i2c_smbus_access(file,I2C_SMBUS_WRITE,command, - I2C_SMBUS_BLOCK_PROC_CALL,&data)) - return -1; - else { - memcpy(values, &data.block[1], _I2C_MIN(data.block[0], I2C_SMBUS_BLOCK_MAX)); - return data.block[0]; - } -} - -#undef _I2C_MIN - -#endif /* _LINUX_I2C_DEV_H */ |
