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