diff options
| author | Vladimir Serbinenko <phcoder@gmail.com> | 2014-01-05 06:52:11 +0100 |
|---|---|---|
| committer | Vladimir Serbinenko <phcoder@gmail.com> | 2014-01-21 16:33:46 +0100 |
| commit | 9609823ed8776f63594c7ff700c13779712b80e9 (patch) | |
| tree | aded84860bb9c52834a3f34164588575161db361 | |
| parent | 77005b47688b6b18bca27350a0b1f399b31f71f6 (diff) | |
sandybridge/igd: Add brightness register descriptions
Needed for brightness control for Lenovo X230
Change-Id: Ib6d127d2e050671dd402c31af06ff4726f65156c
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/4618
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
| -rw-r--r-- | src/northbridge/intel/sandybridge/acpi/igd.asl | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/acpi/igd.asl b/src/northbridge/intel/sandybridge/acpi/igd.asl index a6804adb5e..cfc12ed8b0 100644 --- a/src/northbridge/intel/sandybridge/acpi/igd.asl +++ b/src/northbridge/intel/sandybridge/acpi/igd.asl @@ -23,6 +23,23 @@ Device (GFX0) { Name (_ADR, 0x00020000) + OperationRegion (GFXC, PCI_Config, 0x00, 0x0100) + Field (GFXC, DWordAcc, NoLock, Preserve) + { + Offset (0x10), + BAR0, 64 + } + + OperationRegion (GFRG, SystemMemory, And(BAR0, 0xfffffffffffffff0), 0x400000) + Field (GFRG, DWordAcc, NoLock, Preserve) + { + Offset (0x48254), + BCLV, 16, + Offset (0xc8250), + CR1, 32, + CR2, 32 + } + /* Display Output Switching */ Method (_DOS, 1) { |