68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id: backlight-nano2g.c 28601 2010-11-14 20:39:18Z theseven $
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*
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* Copyright (C) 2009 by Dave Chapman
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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
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include "config.h"
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#include "kernel.h"
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#include "backlight.h"
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#include "backlight-target.h"
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#include "pmu-target.h"
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#ifdef HAVE_LCD_SLEEP
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bool lcd_active(void);
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void lcd_awake(void);
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void lcd_update(void);
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#endif
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void _backlight_set_brightness(int brightness)
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{
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pmu_write(0x28, brightness);
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}
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void _backlight_on(void)
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{
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#ifdef HAVE_LCD_SLEEP
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if (!lcd_active())
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{
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lcd_awake();
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lcd_update();
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sleep(HZ/8);
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}
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#endif
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pmu_write(0x29, 1);
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}
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void _backlight_off(void)
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{
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pmu_write(0x29, 0);
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}
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bool _backlight_init(void)
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{
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pmu_write(0x2a, 6);
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pmu_write(0x28, 0x20);
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pmu_write(0x2b, 20);
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_backlight_on();
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return true;
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}
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