coreboot-kgpe-d16/src/southbridge/intel
Nico Huber e98f6af77b drivers/intel/gma/acpi: Reduce display switching stubs
_DCS, _DGS and _DSS are required by specification. However,
we never implemented them properly, and no OS driver com-
plained yet. So we stub them out and keep the traditional
behavior in case an OS driver checks for their existence.

The old implementations also only returned static values as
there never was any write to their GNVS variables. The TRAP()
that was called in one place is actually implemented by some
ThinkPad's SMI handler as docking event. However, as the call
precedes these SMI handlers in coreboot history, it's most
likely an accident.

Change-Id: Ib0b9fcdd58df254d3b2290900e3bc206a7abd92d
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39726
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
2020-03-24 16:43:00 +00:00
..
bd82x6x drivers/intel/gma/acpi: Reduce display switching stubs 2020-03-24 16:43:00 +00:00
common src (minus soc and mainboard): Remove copyright notices 2020-03-17 18:26:34 +00:00
i82371eb acpi: Change Processor ACPI Name (Intel only) 2020-03-23 16:54:58 +00:00
i82801dx drivers/intel/gma/acpi: Reduce display switching stubs 2020-03-24 16:43:00 +00:00
i82801gx drivers/intel/gma/acpi: Reduce display switching stubs 2020-03-24 16:43:00 +00:00
i82801ix drivers/intel/gma/acpi: Reduce display switching stubs 2020-03-24 16:43:00 +00:00
i82801jx drivers/intel/gma/acpi: Reduce display switching stubs 2020-03-24 16:43:00 +00:00
i82870 src: capitalize 'APIC' 2020-03-23 09:28:55 +00:00
ibexpeak drivers/intel/gma/acpi: Reduce display switching stubs 2020-03-24 16:43:00 +00:00
lynxpoint drivers/intel/gma/acpi: Reduce display switching stubs 2020-03-24 16:43:00 +00:00