77 lines
2.1 KiB
C
77 lines
2.1 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) 2011 by Lorenzo Miori
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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 "config.h"
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#include "system.h"
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#include "backlight.h"
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#include "backlight-target.h"
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#include "lcd.h"
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#include "lcd-target.h"
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#include <fcntl.h>
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#include <stdio.h>
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#include "unistd.h"
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bool backlight_hw_init(void)
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{
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/* We have nothing to do */
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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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FILE *f = fopen("/sys/power/state", "w");
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fputs("on", f);
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fclose(f);
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lcd_enable(true);
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}
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void backlight_hw_off(void)
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{
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FILE * f;
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/* deny the player to sleep deep */
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f = fopen("/sys/power/wake_lock", "w");
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fputs("player", f);
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fclose(f);
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/* deny the player to mute */
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f = fopen("/sys/class/codec/wm8740_mute", "w");
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fputc(0, f);
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fclose(f);
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/* turn off backlight */
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f = fopen("/sys/power/state", "w");
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fputs("mem", f);
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fclose(f);
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}
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void backlight_hw_brightness(int brightness)
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{
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/* Just another check... */
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if (brightness > MAX_BRIGHTNESS_SETTING)
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brightness = MAX_BRIGHTNESS_SETTING;
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if (brightness < MIN_BRIGHTNESS_SETTING)
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brightness = MIN_BRIGHTNESS_SETTING;
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FILE *f = fopen("/sys/devices/platform/rk29_backlight/backlight/rk28_bl/brightness", "w");
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fprintf(f, "%d", brightness);
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fclose(f);
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}
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