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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2008 by Rob Purchase
*
* 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 "backlight-target.h"
#include "system.h"
#include "backlight.h"
#include "pcf50606.h"
#include "tcc780x.h"
int _backlight_init(void)
{
_backlight_set_brightness(DEFAULT_BRIGHTNESS_SETTING);
/* set backlight on by default, since the screen is unreadable without it */
_backlight_on();
return true;
}
void _backlight_set_brightness(int brightness)
{
int level = disable_irq_save();
pcf50606_write(PCF5060X_PWMC1, 0xe1 | (MAX_BRIGHTNESS_SETTING-brightness)<<1);
pcf50606_write(PCF5060X_GPOC1, 0x3);
restore_irq(level);
}
void _backlight_on(void)
{
GPIOA_SET = (1<<6);
}
void _backlight_off(void)
{
GPIOA_CLEAR = (1<<6);
}
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