62ff88b717
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25300 a1c6a512-1295-4272-9138-f99709370657
112 lines
2.8 KiB
C
112 lines
2.8 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) 2006 by Barry Wardell
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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 "backlight-target.h"
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#include "system.h"
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#include "lcd.h"
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#include "backlight.h"
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#include "ascodec-target.h"
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#include "as3514.h"
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int buttonlight_is_on = 0;
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int backlight_is_on = 0;
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static int backlight_level = 0;
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/* logarithmic lookup table for brightness s*/
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static const int brightness_table[MAX_BRIGHTNESS_SETTING+1] = {
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0, 21, 47, 78, 118, 165, 224, 296, 386, 495, 630, 796, 1000
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};
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static void _ll_backlight_on(void)
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{
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GPIOA_PIN(5) = 1<<5;
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}
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static void _ll_backlight_off(void)
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{
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GPIOA_PIN(5) = 0;
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}
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void _backlight_pwm(int on)
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{
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if (on) {
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_ll_backlight_on();
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} else {
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_ll_backlight_off();
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}
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}
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bool _backlight_init(void)
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{
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GPIOA_DIR |= 1<<5;
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return true;
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}
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void _backlight_set_brightness(int brightness)
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{
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backlight_level = brightness_table[brightness];
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if (brightness > 0)
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_backlight_on();
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else
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_backlight_off();
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}
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void _backlight_on(void)
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{
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#ifdef HAVE_LCD_ENABLE
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lcd_enable(true); /* power on lcd + visible display */
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#endif
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if (!backlight_is_on)
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_ll_backlight_on();
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_set_timer2_pwm_ratio(backlight_level);
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backlight_is_on = 1;
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}
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void _backlight_off(void)
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{
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backlight_is_on = 0;
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_set_timer2_pwm_ratio(0);
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_ll_backlight_off();
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#ifdef HAVE_LCD_ENABLE
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lcd_enable(false); /* power off visible display */
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#endif
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}
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void _buttonlight_on(void)
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{
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/* Needed for buttonlight and MicroSD to work at the same time */
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/* Turn ROD control on, as the OF does */
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GPIOD_DIR |= (1<<7);
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SD_MCI_POWER |= (1<<7);
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GPIOD_PIN(7) = (1<<7);
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buttonlight_is_on = 1;
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}
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void _buttonlight_off(void)
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{
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/* Needed for buttonlight and MicroSD to work at the same time */
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/* Turn ROD control off, as the OF does */
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SD_MCI_POWER &= ~(1<<7);
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GPIOD_PIN(7) = 0;
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GPIOD_DIR &= ~(1<<7);
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buttonlight_is_on = 0;
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}
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