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/*
* This file is part of the coreboot project.
*
* Copyright (c) 2011 Sven Schnelle <svens@stackframe.org>
* Copyright (c) 2013 Vladimir Serbinenko
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; version 2 of
* the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*/
#include "smi.h"
Scope (\_SB.PCI0.GFX0)
{
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)))
}
}
}
}
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