89ba7e818c
_remote_backlight_* and _buttonlight_* are cleaned as well Change-Id: I73653752831bbe170c26ba95d3bc04c2e3a5cf30
71 lines
2.1 KiB
C
71 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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* $Id$
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*
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* Copyright (C) 2006 by Linus Nielsen Feltzing
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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 "thread.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_hw_init(void)
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{
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or_l(0x00020000, &GPIO1_ENABLE);
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or_l(0x00020000, &GPIO1_FUNCTION);
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or_l(0x00020000, &GPIO1_OUT); /* Start with the backlight ON */
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return true; /* Backlight always ON after boot. */
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}
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void backlight_hw_on(void)
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{
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lcd_enable(true);
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sleep(HZ/100); /* lcd needs time - avoid flashing for dark screens */
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or_l(0x00020000, &GPIO1_OUT);
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}
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void backlight_hw_off(void)
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{
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and_l(~0x00020000, &GPIO1_OUT);
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lcd_enable(false);
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}
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/* set brightness by changing the PWM */
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void backlight_hw_brightness(int val)
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{
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/* disable IRQs while bitbanging */
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int old_irq_level = disable_irq_save();
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pcf50606_write(0x35, (val << 1) | 0x01); /* 512Hz, Enable PWM */
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/* enable IRQs again */
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restore_irq(old_irq_level);
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}
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void remote_backlight_hw_on(void)
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{
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and_l(~0x00000002, &GPIO1_OUT);
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}
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void remote_backlight_hw_off(void)
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{
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or_l(0x00000002, &GPIO1_OUT);
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}
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