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IG4(4)                 FreeBSD Kernel Interfaces Manual                 IG4(4)

NAME
     ig4 - Intel(R) fourth generation mobile CPU integrated I2C driver

SYNOPSIS
     To compile this driver into the kernel, place the following lines into
     the kernel configuration file:

           device ig4
           device iicbus

     Alternatively, to load the driver as a module at boot time, place the
     following line in loader.conf(5):

           ig4_load="YES"

DESCRIPTION
     The ig4 driver provides access to peripherals attached to an I2C
     controller.

HARDWARE
     ig4 supports the I2C controllers found in fourth generation Intel(R)
     Core(TM) processors based on the mobile U-processor line for intelligent
     systems.  This includes the i7-4650U, i5-4300U, i3-4010U, and 2980U.

SYSCTL VARIABLES
     These sysctl(8) variables are available:

     debug.ig4_dump  This sysctl is a zero-based bit mask.  When any of the
                     bits are set, a register dump is printed for every I2C
                     transfer on an ig4 device with the same unit number.

SEE ALSO
     iic(4), iicbus(4)

AUTHORS
     The ig4 driver was written for DragonFly BSD by Matthew Dillon and
     subsequently ported to FreeBSD by Michael Gmelin <[email protected]>.

     This manual page was written by Michael Gmelin <[email protected]>.

FreeBSD 11.1-RELEASE-p4         October 3, 2016        FreeBSD 11.1-RELEASE-p4
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