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ATOPCASE(4) FreeBSD Kernel Interfaces Manual ATOPCASE(4)
NAME
atopcase - Apple HID-over-SPI transport driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
device atopcase
device intelspi
device spibus
device hidbus
device hkbd
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
atopcase_load="YES"
hkbd_load="YES"
DESCRIPTION
The atopcase driver provides support for Human Interface Devices (HID) on
Serial Peripheral Interface (SPI) buses on Apple Intel Macs.
HARDWARE
The atopcase driver supports the following MacBooks produced in 2015-2018
years:
o Macbook8,1
o Macbook9,1
o Macbook10,1
o MacbookPro11,4
o MacbookPro12,1
o MacbookPro13,1
o MacbookPro13,2
o MacbookPro13,3
o MacbookPro14,1
o MacbookPro14,2
o MacbookPro14,3
SYSCTL VARIABLES
The following variables are available as both sysctl(8) variables and
loader(8) tunables:
hw.hid.atopcase.debug
Debug output level, where 0 is debugging disabled and larger
values increase debug message verbosity. Default is 0.
FILES
/dev/backlight/atopcase0 Keyboard backlight(8) device node.
SEE ALSO
acpi(4), backlight(8), loader(8), loader.conf(5).
HISTORY
The atopcase driver first appeared in FreeBSD 14.0.
AUTHORS
Device interrupts are not acknowledged on some hardware that results in
interrupt storm. Installation of Darwin OSI in acpi(4) driver fixes the
issue. To install Darwin OSI add following lines to loader.conf(5):
hw.acpi.install_interface="Darwin"
hw.acpi.remove_interface="Windows 2009, Windows 2012"
FreeBSD 14.0-RELEASE-p11 August 17, 2023 FreeBSD 14.0-RELEASE-p11