f4c5c6aa62
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@15600 a1c6a512-1295-4272-9138-f99709370657
83 lines
2.3 KiB
C
83 lines
2.3 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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* $Id$
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*
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* Copyright (C) 2006 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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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 "system.h"
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#include "backlight.h"
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#include "backlight-target.h"
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#include "pcf50606.h"
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#include "lcd.h"
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bool _backlight_init(void)
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{
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_backlight_set_brightness(DEFAULT_BRIGHTNESS_SETTING);
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_backlight_on();
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return true; /* Backlight always ON after boot. */
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}
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void _backlight_on(void)
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{
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int level;
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lcd_enable(true);
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#ifndef BOOTLOADER
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_lcd_sleep_timer = 0; /* LCD should be awake already */
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#endif
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level = set_irq_level(HIGHEST_IRQ_LEVEL);
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pcf50606_write(0x38, 0xb0); /* Backlight ON, GPO1INV=1, GPO1ACT=011 */
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set_irq_level(level);
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}
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void _backlight_off(void)
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{
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int level = set_irq_level(HIGHEST_IRQ_LEVEL);
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pcf50606_write(0x38, 0x80); /* Backlight OFF, GPO1INV=1, GPO1ACT=000 */
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set_irq_level(level);
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lcd_enable(false);
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#ifndef BOOTLOADER
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/* Start LCD sleep countdown */
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if (_lcd_sleep_timeout < 0)
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{
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_lcd_sleep_timer = 0; /* Setting == Always */
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lcd_sleep();
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}
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else
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_lcd_sleep_timer = _lcd_sleep_timeout;
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#endif
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}
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/* set brightness by changing the PWM */
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void _backlight_set_brightness(int val)
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{
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/* disable IRQs while bitbanging */
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int old_irq_level = set_irq_level(HIGHEST_IRQ_LEVEL);
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pcf50606_write(0x35, (val << 1) | 0x01); /* 512Hz, Enable PWM */
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/* enable IRQs again */
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set_irq_level(old_irq_level);
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}
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void _remote_backlight_on(void)
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{
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and_l(~0x00200000, &GPIO_OUT);
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}
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void _remote_backlight_off(void)
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{
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or_l(0x00200000, &GPIO_OUT);
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}
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