133 lines
3.3 KiB
C
133 lines
3.3 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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*
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* Copyright (C) 2014 by Ilia Sergachev: Initial Rockbox port to iBasso DX50
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* Copyright (C) 2014 by Mario Basister: iBasso DX90 port
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* Copyright (C) 2014 by Simon Rothen: Initial Rockbox repository submission, additional features
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* Copyright (C) 2014 by Udo Schläpfer: Code clean up, additional features
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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 "debug.h"
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#include "lcd.h"
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#include "panic.h"
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#include "debug-ibasso.h"
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#include "sysfs-ibasso.h"
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/*
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Prevent excessive backlight_hw_on usage.
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Required for proper seeking.
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*/
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static bool _backlight_enabled = false;
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bool backlight_hw_init(void)
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{
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TRACE;
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/*
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/sys/devices/platform/rk29_backlight/backlight/rk28_bl/bl_power
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0: backlight on
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*/
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if(! sysfs_set_int(SYSFS_BACKLIGHT_POWER, 0))
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{
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DEBUGF("ERROR %s: Can not enable backlight.", __func__);
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panicf("ERROR %s: Can not enable backlight.", __func__);
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return false;
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}
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_backlight_enabled = true;
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return true;
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}
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void backlight_hw_on(void)
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{
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if(! _backlight_enabled)
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{
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backlight_hw_init();
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lcd_enable(true);
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}
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}
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void backlight_hw_off(void)
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{
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TRACE;
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/*
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/sys/devices/platform/rk29_backlight/backlight/rk28_bl/bl_power
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1: backlight off
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*/
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if(! sysfs_set_int(SYSFS_BACKLIGHT_POWER, 1))
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{
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DEBUGF("ERROR %s: Can not disable backlight.", __func__);
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return;
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}
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lcd_enable(false);
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_backlight_enabled = false;
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}
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/*
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Prevent excessive backlight_hw_brightness usage.
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Required for proper seeking.
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*/
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static int _current_brightness = -1;
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void backlight_hw_brightness(int brightness)
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{
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if(brightness > MAX_BRIGHTNESS_SETTING)
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{
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DEBUGF("DEBUG %s: Adjusting brightness from %d to MAX.", __func__, brightness);
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brightness = MAX_BRIGHTNESS_SETTING;
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}
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if(brightness < MIN_BRIGHTNESS_SETTING)
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{
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DEBUGF("DEBUG %s: Adjusting brightness from %d to MIN.", __func__, brightness);
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brightness = MIN_BRIGHTNESS_SETTING;
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}
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if(_current_brightness == brightness)
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{
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return;
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}
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TRACE;
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_current_brightness = brightness;
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/*
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/sys/devices/platform/rk29_backlight/backlight/rk28_bl/max_brightness
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0 ... 255
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*/
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if(! sysfs_set_int(SYSFS_BACKLIGHT_BRIGHTNESS, _current_brightness))
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{
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DEBUGF("ERROR %s: Can not set brightness.", __func__);
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return;
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}
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}
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