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| author | Vladimir Serbinenko <phcoder@gmail.com> | 2014-08-20 22:39:21 +0200 |
|---|---|---|
| committer | Vladimir Serbinenko <phcoder@gmail.com> | 2014-08-21 20:11:15 +0200 |
| commit | 91b1f0b712f5419c8f66de1886a5abd15d1604ad (patch) | |
| tree | fba42b230b2a73fc7bec3498a858deaaf4eb11d6 /src/northbridge | |
| parent | 91337fd8da2e672438fe5e01b64207ccd8b44b36 (diff) | |
| download | coreboot-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')
| -rw-r--r-- | src/northbridge/intel/nehalem/acpi/igd.asl | 90 |
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 } |