5ad4d138d7
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25804 a1c6a512-1295-4272-9138-f99709370657
94 lines
2.2 KiB
C
94 lines
2.2 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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* $Id:$
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*
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* Copyright (C) 2010 Marcin Bukat
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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 "cpu.h"
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#include "kernel.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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static bool _backlight_on = true;
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static int _brightness = DEFAULT_BRIGHTNESS_SETTING;
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/* Returns the current state of the backlight (true=ON, false=OFF). */
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bool _backlight_init(void)
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{
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#ifdef BOOTLOADER
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and_l(~(1<<28),&GPIO_OUT);
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#endif
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or_l((1<<28),&GPIO_FUNCTION);
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or_l((1<<28),&GPIO_ENABLE);
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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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#ifndef BOOTLOADER
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if (_backlight_on)
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return;
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#endif
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_backlight_set_brightness(_brightness);
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_backlight_on = true;
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}
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void _backlight_hw_off(void)
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{
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/* GPIO28 low */
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and_l(~(1<<28),&GPIO_OUT);
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_backlight_on = false;
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}
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void _backlight_set_brightness(int val)
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{
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unsigned char i;
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#ifndef BOOTLOADER
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if( _brightness == val && _backlight_on == true )
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return;
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#endif
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and_l(~(1<<28),&GPIO_OUT);
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sleep(4);
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for (i=0;i<val;i++)
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{
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or_l((1<<28),&GPIO_OUT);
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and_l(~(1<<28),&GPIO_OUT);
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}
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or_l((1<<28),&GPIO_OUT);
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_brightness = val;
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}
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void _remote_backlight_on(void)
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{
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/* I don't have remote to play with */
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}
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void _remote_backlight_off(void)
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{
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/* I don't have remote to play with */
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}
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