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mb/g/drallion: Enable privacy screen on Drallion variant 

Enable ACPI methods to control privacy screen on Drallion devices.
Drallion devices may not have a privacy screen and it is up to the
EC to determine if the privacy screen is present on the system.

BUG=b:142656363
TEST=emerge-drallion coreboot chromeos-bootimage

Change-Id: I79d02bb1b25f0deb49ae4bb852b7ed8c21fd31c7
Signed-off-by: Mathew King <mathewk@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36045
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Mathew King 2019-10-14 12:07:23 -06:00 committed by Duncan Laurie
parent c650e130ce
commit c487ac1a9f
3 changed files with 19 additions and 1 deletions
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1
src/mainboard/google/drallion/Kconfig
View File

@ -2,6 +2,7 @@
config BOARD_GOOGLE_BASEBOARD_DRALLION
def_bool n
select BOARD_ROMSIZE_KB_32768
select DRIVERS_GENERIC_GFX
select DRIVERS_I2C_GENERIC
select DRIVERS_I2C_HID
select DRIVERS_INTEL_ISH

16
src/mainboard/google/drallion/variants/drallion/devicetree.cb
View File

@ -224,7 +224,21 @@ chip soc/intel/cannonlake
end
device domain 0 on
device pci 00.0 on end # Host Bridge
device pci 02.0 on end # Integrated Graphics Device
device pci 02.0 on
chip drivers/generic/gfx
register "device_count" = "1"
register "device[0].name" = ""LCD""
# Address is set following the ACPI spec section A.3.2
# for an internal panel on the first port of the graphics chip
register "device[0].addr" = "0x80010400"
register "device[0].privacy.enabled" = "1"
register "device[0].privacy.detect_function" = ""\\_SB.PCI0.LPCB.EC0.GPVD""
register "device[0].privacy.status_function" = ""\\_SB.PCI0.LPCB.EC0.GPVX""
register "device[0].privacy.enable_function" = ""\\_SB.PCI0.LPCB.EC0.EPVX""
register "device[0].privacy.disable_function" = ""\\_SB.PCI0.LPCB.EC0.DPVX""
device generic 0 on end
end
end # Integrated Graphics Device
device pci 04.0 on end # SA Thermal device
device pci 12.0 on end # Thermal Subsystem
device pci 12.5 off end # UFS SCS

3
src/mainboard/google/drallion/variants/drallion/include/variant/ec.h
View File

@ -31,4 +31,7 @@
/* Enable DPTF */
#define EC_ENABLE_DPTF
/* Enable privacy screen functionality */
#define EC_ENABLE_PRIVACY
#endif