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ATOPCASE(4)		     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:

     *	 Macbook8,1
     *	 Macbook9,1
     *	 Macbook10,1
     *	 MacbookPro11,4
     *	 MacbookPro12,1
     *	 MacbookPro13,1
     *	 MacbookPro13,2
     *	 MacbookPro13,3
     *	 MacbookPro14,1
     *	 MacbookPro14,2
     *	 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), loader.conf(5), backlight(8), loader(8)

HISTORY
     The atopcase driver first appeared in FreeBSD 14.0.

AUTHORS
     The atopcase driver  was  originally  written  by	Val  Packett  <val@pack-
     ett.cool>	 and   marginally   improved   upon   by   Vladimir   Kondratyev
     <wulf@FreeBSD.org>.

     This manual page was written by Vladimir Kondratyev <wulf@FreeBSD.org>.

BUGS
     Device interrupts are not acknowledged on some hardware that results in in-
     terrupt storm.  Installation of Darwin OSI in acpi(4) driver fixes the  is-
     sue.  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 ports 15.quarterly	 August 17, 2023		     ATOPCASE(4)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=atopcase&sektion=4&manpath=FreeBSD+15.1-RELEASE+and+Ports.quarterly>

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