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authorVladimir Serbinenko <phcoder@gmail.com>2014-01-05 06:52:11 +0100
committerVladimir Serbinenko <phcoder@gmail.com>2014-01-21 16:33:46 +0100
commit9609823ed8776f63594c7ff700c13779712b80e9 (patch)
treeaded84860bb9c52834a3f34164588575161db361
parent77005b47688b6b18bca27350a0b1f399b31f71f6 (diff)
downloadcoreboot-9609823ed8776f63594c7ff700c13779712b80e9.tar.xz
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.asl17
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)
{