81 lines
2 KiB
C
81 lines
2 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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* $Id$
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*
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* Copyright (C) 2008 by Maurus Cuelenaere
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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 "jz4740.h"
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#include "backlight-target.h"
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#define GPIO_PWM 123
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#define PWM_CHN 7
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#define PWM_FULL 101
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static void set_backlight(int unk, int val)
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{
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if(val == 0)
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__gpio_as_pwm7();
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else
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{
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REG_TCU_TCSR(7) |= 2;
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REG_TCU_TCSR(7) &= ~0x100;
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int tmp;
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tmp = (unk/2 + __cpm_get_rtcclk()) / unk;
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if(tmp > 0xFFFF)
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tmp = 0xFFFF;
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__tcu_set_half_data(7, (tmp * unk * 1374389535) >> 5);
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__tcu_set_full_data(7, tmp);
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REG_TCU_TSCR = (1 << 7);
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REG_TCU_TESR = (1 << 7);
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__tcu_enable_pwm_output(7);
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}
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__tcu_set_count(7, 0);
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}
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bool _backlight_init(void)
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{
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__gpio_as_pwm7();
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__tcu_stop_counter(7);
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__tcu_disable_pwm_output(7);
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set_backlight(300, 7);
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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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set_backlight(300, 7);
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}
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void _backlight_off(void)
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{
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set_backlight(300, 0);
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}
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#ifdef HAVE_BACKLIGHT_BRIGHTNESS
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void _backlight_set_brightness(int brightness)
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{
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(void)brightness;
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return;
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}
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#endif
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