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moxa-it87-gpio-driver

Moxa IT87 GPIO Driver​

moxa-it87-gpio-driver: GPIO interface for IT87xx Super I/O chips

Support Models​

moxa-it87-gpio-driver

What Tools Depend On?​

Usage (Ubuntu 20.04/Debian 11)​

  • Install required packages
apt update
apt install --no-install-recommends -qqy build-essential dmidecode
apt install --no-install-recommends -qqy linux-headers-$(uname -r)
  • Build kernel module
    1. Run make to build kernel module
    2. Once build successful, gpio-it87.ko could be found under current directory
    3. Run make install to install kernel module on /usr/lib/modules/$(uname -r)/

Usage (CentOS 7.9)​

  • Sync the latest version available from any enabled repository and reboot system
yum distro-sync
reboot
  • Install required packages
yum install "kernel-devel-$(uname -r)"
yum install "kernel-headers-$(uname -r)"
yum install dmidecode
yum groupinstall "Development Tools"
  • Build kernel module
    1. Run make to build kernel module
    2. Once build successful, gpio-it87.ko could be found under current directory
    3. Run make install to install kernel module on /usr/lib/modules/$(uname -r)/
    4. Reboot the system
note

CentOS 7 latest kernel moved from "kernel.ko" to "kernel.ko.xz", please ensure target "kernel.ko.xz" is removed or moved as a backup.

Troubleshooting (CentOS 7.9)​

  • Device or resource busy when load gpio-it87 driver

    • Add acpi_enforce_resources=lax on boot parameter
    # Edit grub config
    vi /etc/default/grub
    GRUB_CMDLINE_LINUX="[...] acpi_enforce_resources=lax"

    # If you change this file, run 'grub2-mkconfig' afterwards to update
    grub2-mkconfig -o /etc/grub2.cfg
    grub2-mkconfig -o /etc/grub2-efi.cfg

  • Enforce to use it87 series driver instead of iTCO driver (if necessary)

# edit `/lib/modprobe.d/iTCO-blacklist.conf`

blacklist iTCO_wdt
blacklist iTCO_vendor_support

Last updated on 2023-02-15 by Wilson Huang