NAME

       glxiic — Geode LX CS5536 I2C controller driver

SYNOPSIS

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

             device pci
             device isa
             device glxiic
             device iicbus

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

             glxiic_load="YES"

DESCRIPTION

       The  glxiic  driver supports the System Management Bus controller of the Geode LX series CS5536 Companion
       Device.  The Geode LX is a member of the AMD Geode family of integrated x86 system chips.

       Although AMD refers to this device as a System Management Bus (SMBus) controller, it  is  really  an  I2C
       controller (it lacks SMBus ALERT# and Alert Response support).

       The glxiic driver supports both I2C master and slave mode.

SYSCTL VARIABLE

       The glxiic driver supports the following variable as both sysctl(8) and loader(8) tunable:

       dev.glxiic.0.timeout
               This  variable  controls  the  I2C  bus  timeout  in  milliseconds.   The  default  timeout is 35
               milliseconds.  A value of zero disables the timeout.

CAVEAT

       The glxiic driver uses the interrupt line number configured by the board  firmware  by  default.   If  no
       interrupt line number has been configured by the board firmware (or to override the interrupt line number
       configured by board firmware), place the following line in device.hints(5):

             hint.glxiic.0.irq="10"

       The interrupt line number must be between 1 and 15.

SEE ALSO

       iicbus(4), device.hints(5), loader.conf(5), loader(8), sysctl(8)

HISTORY

       The glxiic device driver and manual page first appeared in FreeBSD 9.0.

AUTHORS

       The glxiic device driver and manual page were written by Henrik Brix Andersen <brix@FreeBSD.org>.

Debian                                            May 15, 2011                                         GLXIIC(4)