Provided by: i2c-tools_3.1.1-1_i386 bug

NAME

       i2c-stub-from-dump - feed i2c-stub with dump files

SYNOPSIS

       i2c-stub-from-dump address[,address,...]  dump-file [dump-file ...]

DESCRIPTION

       i2c-stub-from-dump  is  a  small  helper script for the i2c-stub kernel
       driver.  It lets you setup one or more fake I2C chips on  the  i2c-stub
       bus based on dumps of the chips you want to emulate.

       i2c-stub-from-dump  requires  i2cdetect  and i2cset to be installed and
       reachable through the user's PATH. The former is used to find  out  the
       i2c-stub  bus number, while the latter is used to write to the fake I2C
       chips.

EXAMPLE

       You have an I2C chip on system A. You would like to do some development
       on its driver on system B. Here are the few steps you have to follow.

       On system A, use i2cdump to capture a dump from the chip. Assuming that
       the chip in question lives at address 0x4c on I2C bus 0, you would run:

               i2cdump -y 0 0x4c b > chip.dump

       Adjust the bus number and chip address for  your  case.  i2cdetect  can
       help  you  find  out  their  values.  If  the device uses word (16-bit)
       register access instead of the traditional  byte  (8-bit)  access,  use
       mode w instead of b.

       Copy the dump file to system B.

       On system B, run:

               i2c-stub-from-dump 0x4c chip.dump

       This  will  load  the  required  i2c-dev and i2c-stub kernel drivers if
       needed, then write all the register values to the emulated I2C chip  at
       address 0x4c.  Again, adjust the address as needed.

LIMITATIONS

       There are some limitations to the kind of devices that can be handled:

       ยท      Device must not have banks (as most Winbond devices do).

SEE ALSO

       i2cdump(8), i2cdetect(8), i2cset(8)

AUTHOR

       Jean Delvare

                                  March 2010             I2C-STUB-FROM-DUMP(8)