67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
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/***************************************************************************
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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) 2013 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 "pmu-ypr1.h"
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static bool backlight_on_status = true; /* Is on or off? */
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bool _backlight_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_on(void)
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{
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if (!backlight_on_status) {
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_backlight_set_brightness(backlight_brightness);
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}
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backlight_on_status = true;
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}
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void _backlight_off(void)
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{
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if (backlight_on_status) {
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_backlight_set_brightness(0);
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}
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backlight_on_status = false;
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}
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void _backlight_set_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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}
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if (brightness < 0) {
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brightness = MIN_BRIGHTNESS_SETTING;
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}
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/* Do the appropriate ioctl on the linux module */
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pmu_ioctl(MAX8819_IOCTL_LCD_DIM_CTRL, &brightness);
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}
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