57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
|
/***************************************************************************
|
||
|
|
* __________ __ ___.
|
||
|
|
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
|
||
|
|
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
|
||
|
|
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
|
||
|
|
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
|
||
|
|
* \/ \/ \/ \/ \/
|
||
|
|
* $Id$
|
||
|
|
*
|
||
|
|
* Copyright (C) 2008 by Rob Purchase
|
||
|
|
*
|
||
|
|
* All files in this archive are subject to the GNU General Public License.
|
||
|
|
* See the file COPYING in the source tree root for full license agreement.
|
||
|
|
*
|
||
|
|
* 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"
|
||
|
|
|
||
|
|
static unsigned short backlight_brightness = DEFAULT_BRIGHTNESS_SETTING;
|
||
|
|
|
||
|
|
int _backlight_init(void)
|
||
|
|
{
|
||
|
|
_backlight_set_brightness(DEFAULT_BRIGHTNESS_SETTING);
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void _backlight_set_brightness(int brightness)
|
||
|
|
{
|
||
|
|
backlight_brightness = brightness;
|
||
|
|
|
||
|
|
int level = disable_irq_save();
|
||
|
|
pcf50606_write(PCF5060X_PWMC1, 0xe1 | (14-backlight_brightness)<<1);
|
||
|
|
pcf50606_write(PCF5060X_GPOC1, 0x3);
|
||
|
|
restore_irq(level);
|
||
|
|
|
||
|
|
if (brightness > 0)
|
||
|
|
_backlight_on();
|
||
|
|
else
|
||
|
|
_backlight_off();
|
||
|
|
}
|
||
|
|
|
||
|
|
void _backlight_on(void)
|
||
|
|
{
|
||
|
|
GPIOA_SET = (1<<6);
|
||
|
|
}
|
||
|
|
|
||
|
|
void _backlight_off(void)
|
||
|
|
{
|
||
|
|
GPIOA_CLEAR = (1<<6);
|
||
|
|
}
|