[coreboot-gerrit] Change in coreboot[master]: drvs/intel/gma/acpi: Add methods to use MBOX3

[Patrick Rudolph (Code Review)]

Hello Alexander Couzens, Arthur Heymans, Matt DeVillier, build bot (Jenkins), Nico Huber, 

I'd like you to reexamine a change. Please visit

    https://review.coreboot.org/27711

to look at the new patch set (#4).

Change subject: drvs/intel/gma/acpi: Add methods to use MBOX3
......................................................................

drvs/intel/gma/acpi: Add methods to use MBOX3

* Add Mailbox 3 driver
* Request brightness change through Mailbox 3
* Return Ones on error or if unsupported
* Mark existing code as legacy
  (still required if no GMA driver is running)
* Call legacy code if Mailbox 3 is unsupported, on error or
  if gma driver isn't running

Tested on Lenovo T430:
* Brightness control still works
* Brightness is the same on S3 resume

Change-Id: I51554c819148336b204d28972cbf775a10c3fb8a
Signed-off-by: Patrick Rudolph <siro at das-labor.org>
---
M src/drivers/intel/gma/acpi/common.asl
M src/drivers/intel/gma/acpi/configure_brightness_levels.asl
M src/drivers/intel/gma/acpi/non-pch.asl
M src/drivers/intel/gma/acpi/pch.asl
4 files changed, 152 insertions(+), 20 deletions(-)


  git pull ssh://review.coreboot.org:29418/coreboot refs/changes/11/27711/4
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I51554c819148336b204d28972cbf775a10c3fb8a
Gerrit-Change-Number: 27711
Gerrit-PatchSet: 4
Gerrit-Owner: Patrick Rudolph <siro at das-labor.org>
Gerrit-Reviewer: Alexander Couzens <lynxis at fe80.eu>
Gerrit-Reviewer: Arthur Heymans <arthur at aheymans.xyz>
Gerrit-Reviewer: Matt DeVillier <matt.devillier at gmail.com>
Gerrit-Reviewer: Nico Huber <nico.h at gmx.de>
Gerrit-Reviewer: build bot (Jenkins) <no-reply at coreboot.org>
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