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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@packett.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
       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	15.0			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+15.0-RELEASE+and+Ports.quarterly>

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