Method (_DOS, 1, NotSerialized)\n
{\n
// Note: Some systems have this defined in DSDT, so uncomment
// the next line if that is the case.
//External(^^_DOS, MethodObj)
^^_DOS(Arg0)
}
# This patch enables the brightness slider in SysPrefs->Displays
# and will also enable activation of sleep mode by closing
# the laptop lid.
#
# This particular version is intended to be used with ACPIBacklight.kext
# although it can also be used with AppleBacklight.kext,
# provided AppleBacklight.kext is patched to recognize your
# display or an injector is used to set brightness levels.
#
# See this thread for more information:
# http://www.tonymacx86.com/hp-probook-mavericks/121031-native-brightness-working-without-blinkscreen-using-patched-applebacklight-kext.html
# (also read any linked threads)
#
# Note: This patch should be applied to the DSDT or SSDT that defines
# your integrated graphics device (always at _ADR 0x00020000)
#
# This patch works for both Haswell and Broadwell graphics
#
into device name_adr 0x00020000 insert
begin
OperationRegion (RMPC, PCI_Config, 0x10, 4)\n
Field (RMPC, AnyAcc, NoLock, Preserve)\n
{\n
BAR1,32,\n
}\n
Device (PNLF)\n
{\n
// normal PNLF declares (note some of this probably not necessary)\n
Name (_ADR, Zero)\n
Name (_HID, EisaId ("APP0002"))\n
Name (_CID, "backlight")\n
Name (_UID, 15)\n
Name (_STA, 0x0B)\n
//define hardware register access for brightness\n
// lower nibble of BAR1 is status bits and not part of the address\n
OperationRegion (BRIT, SystemMemory, And(^BAR1, Not(0xF)), 0xe1184)\n
Field (BRIT, AnyAcc, Lock, Preserve)\n
{\n
Offset(0x48250),\n
LEV2, 32,\n
LEVL, 32,\n
Offset(0x70040),\n
P0BL, 32,\n
Offset(0xc8250),\n
LEVW, 32,\n
LEVX, 32,\n
Offset(0xe1180),\n
PCHL, 32,\n
}\n
// LMAX: use 0xad9/0x56c/0x5db to force OS X value\n
// or use any arbitrary value\n
// or use 0 to capture BIOS setting\n
Name (LMAX, 0xad9)\n
// KMAX: defines the unscaled range in the _BCL table below\n
Name (KMAX, 0xad9)\n
// _INI deals with differences between native setting and desired\n
Method (_INI, 0, NotSerialized)\n
{\n
// This 0xC value comes from looking what OS X initializes this\n
// register to after display sleep (using ACPIDebug/ACPIPoller)\n
Store(0xC0000000, LEVW)\n
// determine LMAX to use\n
If (LNot(LMAX)) { Store(ShiftRight(LEVX,16), LMAX) }\n
If (LNot(LMAX)) { Store(KMAX, LMAX) }\n
If (LNotEqual(LMAX, KMAX))\n
{\n
// Scale all the values in _BCL to the PWM max in use\n
Store(0, Local0)\n
While (LLess(Local0, SizeOf(_BCL)))\n
{\n
Store(DerefOf(Index(_BCL,Local0)), Local1)\n
Divide(Multiply(Local1,LMAX), KMAX,, Local1)\n
Store(Local1, Index(_BCL,Local0))\n
Increment(Local0)\n
}\n
// Also scale XRGL and XRGH values\n
Divide(Multiply(XRGL,LMAX), KMAX,, XRGL)\n
Divide(Multiply(XRGH,LMAX), KMAX,, XRGH)\n
}\n
// adjust values to desired LMAX\n
Store(ShiftRight(LEVX,16), Local1)\n
If (LNotEqual(Local1, LMAX))\n
{\n
Store(And(LEVX,0xFFFF), Local0)\n
If (LOr(LNot(Local0),LNot(Local1))) { Store(LMAX, Local0) Store(LMAX, Local1) }\n
Divide(Multiply(Local0,LMAX), Local1,, Local0)\n
//REVIEW: wait for vblank before setting new PWM config\n
//Store(P0BL, Local7)\n
//While (LEqual (P0BL, Local7)) {}\n
Store(Or(Local0,ShiftLeft(LMAX,16)), LEVX)\n
}\n
}\n
// _BCM/_BQC: set/get for brightness level\n
Method (_BCM, 1, NotSerialized)\n
{\n
// store new backlight level\n
Store(Match(_BCL, MGE, Arg0, MTR, 0, 2), Local0)\n
If (LEqual(Local0, Ones)) { Subtract(SizeOf(_BCL), 1, Local0) }\n
Store(Or(DerefOf(Index(_BCL,Local0)),ShiftLeft(LMAX,16)), LEVX)\n
}\n
Method (_BQC, 0, NotSerialized)\n
{\n
Store(Match(_BCL, MGE, And(LEVX, 0xFFFF), MTR, 0, 2), Local0)\n
If (LEqual(Local0, Ones)) { Subtract(SizeOf(_BCL), 1, Local0) }\n
Return(DerefOf(Index(_BCL, Local0)))\n
}\n
Method (_DOS, 1, NotSerialized)\n
{\n
// Note: Some systems have this defined in DSDT, so uncomment\n
// the next line if that is the case.\n
//External(^^_DOS, MethodObj)\n
^^_DOS(Arg0)\n
}\n
// extended _BCM/_BQC for setting "in between" levels\n
Method (XBCM, 1, NotSerialized)\n
{\n
// store new backlight level\n
If (LGreater(Arg0, XRGH)) { Store(XRGH, Arg0) }\n
If (LAnd(Arg0, LLess(Arg0, XRGL))) { Store(XRGL, Arg0) }\n
Store(Or(Arg0,ShiftLeft(LMAX,16)), LEVX)\n
}\n
Method (XBQC, 0, NotSerialized)\n
{\n
Store(And(LEVX,0xFFFF), Local0)\n
If (LGreater(Local0, XRGH)) { Store(XRGH, Local0) }\n
If (LAnd(Local0, LLess(Local0, XRGL))) { Store(XRGL, Local0) }\n
Return(Local0)\n
}\n
// Set XOPT bit 0 to disable smooth transitions\n
// Set XOPT bit 1 to wait for native BacklightHandler\n
// Set XOPT bit 2 to force use of native BacklightHandler\n
Name (XOPT, 0x02)\n
// XRGL/XRGH: defines the valid range\n
Name (XRGL, 25)\n
Name (XRGH, 2777)\n
// _BCL: returns list of valid brightness levels\n
// first two entries describe ac/battery power levels\n
Name (_BCL, Package()\n
{\n
2777,\n
748,\n
0,\n
35, 39, 44, 50,\n
58, 67, 77, 88,\n
101, 115, 130, 147,\n
165, 184, 204, 226,\n
249, 273, 299, 326,\n
354, 383, 414, 446,\n
479, 514, 549, 587,\n
625, 665, 706, 748,\n
791, 836, 882, 930,\n
978, 1028, 1079, 1132,\n
1186, 1241, 1297, 1355,\n
1414, 1474, 1535, 1598,\n
1662, 1728, 1794, 1862,\n
1931, 2002, 2074, 2147,\n
2221, 2296, 2373, 2452,\n
2531, 2612, 2694, 2777,\n
})\n
}\n
end;
楼主: hs9206
