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/***************************************************************************
* __________ __ ___
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
*
* Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
* Copyright (C) 2014 by Mario Basister: iBasso DX90 port
* Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
* Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
*
* 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 "debug.h"
#include "lcd.h"
#include "panic.h"
#include "debug-ibasso.h"
#include "sysfs-ibasso.h"
/*
Prevent excessive backlight_hw_on usage.
Required for proper seeking.
*/
static bool _backlight_enabled = false;
bool backlight_hw_init(void)
{
TRACE;
/*
/sys/devices/platform/rk29_backlight/backlight/rk28_bl/bl_power
0: backlight on
*/
if(! sysfs_set_int(SYSFS_BACKLIGHT_POWER, 0))
{
DEBUGF("ERROR %s: Can not enable backlight.", __func__);
panicf("ERROR %s: Can not enable backlight.", __func__);
return false;
}
_backlight_enabled = true;
return true;
}
void backlight_hw_on(void)
{
if(! _backlight_enabled)
{
backlight_hw_init();
lcd_enable(true);
}
}
void backlight_hw_off(void)
{
TRACE;
/*
/sys/devices/platform/rk29_backlight/backlight/rk28_bl/bl_power
1: backlight off
*/
if(! sysfs_set_int(SYSFS_BACKLIGHT_POWER, 1))
{
DEBUGF("ERROR %s: Can not disable backlight.", __func__);
return;
}
lcd_enable(false);
_backlight_enabled = false;
}
/*
Prevent excessive backlight_hw_brightness usage.
Required for proper seeking.
*/
static int _current_brightness = -1;
void backlight_hw_brightness(int brightness)
{
if(brightness > MAX_BRIGHTNESS_SETTING)
{
DEBUGF("DEBUG %s: Adjusting brightness from %d to MAX.", __func__, brightness);
brightness = MAX_BRIGHTNESS_SETTING;
}
if(brightness < MIN_BRIGHTNESS_SETTING)
{
DEBUGF("DEBUG %s: Adjusting brightness from %d to MIN.", __func__, brightness);
brightness = MIN_BRIGHTNESS_SETTING;
}
if(_current_brightness == brightness)
{
return;
}
TRACE;
_current_brightness = brightness;
/*
/sys/devices/platform/rk29_backlight/backlight/rk28_bl/max_brightness
0 ... 255
*/
if(! sysfs_set_int(SYSFS_BACKLIGHT_BRIGHTNESS, _current_brightness))
{
DEBUGF("ERROR %s: Can not set brightness.", __func__);
return;
}
}
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