deeec18520
Changes to CR1 and CR2 were effectively overwriting the backlight configuration from the devicetree with static values. Instead read the maximum brightness value from BCLM (backlight modulation frequency) and calculate the target level (Arg0 is the target level as percentage). Turned out that _BQC has to return a value from the list returned by _BCL. So XBQC got a little heavier to search for the correct value. Change-Id: I35419993c8250c95fc69ba4db30db9dba9e6f8ff Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: http://review.coreboot.org/11704 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
44 lines
1.1 KiB
Plaintext
44 lines
1.1 KiB
Plaintext
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2007-2009 coresystems GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; version 2 of
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* the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc.
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*/
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Device (GFX0)
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{
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Name (_ADR, 0x00020000)
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OperationRegion (GFXC, PCI_Config, 0x00, 0x0100)
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Field (GFXC, DWordAcc, NoLock, Preserve)
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{
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Offset (0x10),
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BAR0, 64
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}
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OperationRegion (GFRG, SystemMemory, And (BAR0, 0xfffffffffffffff0), 0x400000)
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Field (GFRG, DWordAcc, NoLock, Preserve)
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{
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Offset (0x48254),
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BCLV, 16,
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Offset (0xc8256),
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BCLM, 16
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}
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#include "brightness_levels.asl"
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#include "common.asl"
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}
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