[M] Change in coreboot[main]: drivers/wifi: Support Bluetooth Regulator Domain Settings

[Jérémy Compostella (Code Review)]

Attention is currently required from: Eric Lai, Subrata Banik, YH Lin, [e-mail].

Hello Eric Lai, Subrata Banik, YH Lin, build bot (Jenkins), [e-mail],

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

https://review.coreboot.org/c/coreboot/+/83200?usp=email

to look at the new patch set (#9).

Change subject: drivers/wifi: Support Bluetooth Regulator Domain Settings
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drivers/wifi: Support Bluetooth Regulator Domain Settings

The 'Bluetooth Increased Power Mode - SAR Limitation' feature provides
ability to utilize increased device Transmit power capability for
Bluetooth applications in coordination with Wi-Fi adhering to product
SAR limit when Bluetooth and Wi-Fi run together.

This commit introduces a `bluetooth_companion' field to the generic
Wi-Fi drivers chip data. This field can be set in the board design
device tree to supply the bluetooth device for which the BRDS function
must be created.

This feature is required for Meteor Lake rex karis variant.

The implementation follows document 559910 Intel Connectivity
Platforms BIOS Guideline revision 8.3 specification.

BUG=b:348345301
BRANCH=firmware-rex-15709.B
TEST=BRDS method is added to the CNVW device and return the data
     supplied by the SAR binary blob

Change-Id: Iebe95815c944d045f4cf686abcd1874a8a45e209
Signed-off-by: Jeremy Compostella 
---
M src/drivers/wifi/generic/acpi.c
M src/drivers/wifi/generic/chip.h
M src/include/sar.h
M src/vendorcode/google/chromeos/sar.c
4 files changed, 105 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/00/83200/9