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authorVladimir Serbinenko <phcoder@gmail.com>2014-08-20 22:39:21 +0200
committerVladimir Serbinenko <phcoder@gmail.com>2014-08-21 20:11:15 +0200
commit91b1f0b712f5419c8f66de1886a5abd15d1604ad (patch)
treefba42b230b2a73fc7bec3498a858deaaf4eb11d6 /src/northbridge/intel/nehalem
parent91337fd8da2e672438fe5e01b64207ccd8b44b36 (diff)
downloadcoreboot-91b1f0b712f5419c8f66de1886a5abd15d1604ad.tar.xz
Merge LCD on nehalem
Change-Id: I09852ea56495da17e7607064d74d98f2296f34b1 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/6721 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Diffstat (limited to 'src/northbridge/intel/nehalem')
-rw-r--r--src/northbridge/intel/nehalem/acpi/igd.asl90
1 files changed, 90 insertions, 0 deletions
diff --git a/src/northbridge/intel/nehalem/acpi/igd.asl b/src/northbridge/intel/nehalem/acpi/igd.asl
index d780a6ebd1..a892ce24bb 100644
--- a/src/northbridge/intel/nehalem/acpi/igd.asl
+++ b/src/northbridge/intel/nehalem/acpi/igd.asl
@@ -337,4 +337,94 @@ Device (GFX0)
}
}
+#ifdef HAVE_LCD_SCREEN
+ Device (LCD0)
+ {
+ Name (_ADR, 0x0400)
+ Name (BRCT, 0)
+
+ Name (BRIG, Package (0x12)
+ {
+ 0x61,
+ 0x61,
+ 0x2,
+ 0x4,
+ 0x5,
+ 0x7,
+ 0x9,
+ 0xb,
+ 0xd,
+ 0x11,
+ 0x14,
+ 0x17,
+ 0x1c,
+ 0x20,
+ 0x27,
+ 0x31,
+ 0x41,
+ 0x61,
+ })
+
+ Method (_BCL, 0, NotSerialized)
+ {
+ Store (1, BRCT)
+ Return (BRIG)
+ }
+
+ Method (_BCM, 1, NotSerialized)
+ {
+ Store (ShiftLeft (Arg0, 4), ^^BCLV)
+ Store (0x80000000, ^^CR1)
+ Store (0x061a061a, ^^CR2)
+ }
+ Method (_BQC, 0, NotSerialized)
+ {
+ Store (^^BCLV, Local0)
+ ShiftRight (Local0, 4, Local0)
+ Return (Local0)
+ }
+
+ Method(BRID, 1, NotSerialized)
+ {
+ Store (Match (BRIG, MEQ, Arg0, MTR, Zero, 2), Local0)
+ If (LEqual (Local0, Ones))
+ {
+ Return (0x11)
+ }
+ Return (Local0)
+ }
+
+ /* Using Notify is the right way. But Windows doesn't handle
+ it well. So use both method in a way to avoid double action.
+ */
+ Method (DECB, 0, NotSerialized)
+ {
+ If (BRCT)
+ {
+ Notify (LCD0, 0x87)
+ } Else {
+ Store (BRID (_BQC ()), Local0)
+ If (LNotEqual (Local0, 2))
+ {
+ Decrement (Local0)
+ }
+ _BCM (DerefOf (Index (BRIG, Local0)))
+ }
+ }
+ Method (INCB, 0, NotSerialized)
+ {
+ If (BRCT)
+ {
+ Notify (LCD0, 0x86)
+ } Else {
+ Store (BRID (_BQC ()), Local0)
+ If (LNotEqual (Local0, 0x11))
+ {
+ Increment (Local0)
+ }
+ _BCM (DerefOf (Index (BRIG, Local0)))
+ }
+ }
+ }
+#endif
}