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Fills in the stubs the Nano 3G port was left with, taking each from how the original firmware drives the same hardware. Testing evidence: firmware/target/arm/s5l8702/ipodnano3g/TESTING.md. Co-authored-by: Claude Opus 5 <noreply@anthropic.com> Change-Id: Iea5314769502f5941a176600869591756c5e3233
70 lines
2.1 KiB
C
70 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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*
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* Copyright (C) 2009 by Dave Chapman
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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 <stdbool.h>
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#include "config.h"
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#include "kernel.h"
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#include "backlight.h"
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#include "backlight-target.h"
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#include "pmu-target.h"
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#ifdef HAVE_LCD_SLEEP
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#include "lcd.h"
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#include "lcd-s5l8702.h"
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#endif
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/* The original firmware writes the level to bits 0..4 as well */
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void backlight_hw_brightness(int brightness)
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{
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pmu_write(D1671_REG_LEDCTL,
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(pmu_read(D1671_REG_LEDCTL) & ~D1671_LEDCTL_OUT_MASK) | (brightness>>1));
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}
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void backlight_hw_on(void)
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{
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#ifdef HAVE_LCD_SLEEP
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if (!lcd_active())
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lcd_awake();
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#endif
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/* As the original firmware turns it on: bits 7 and 6 set,
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* bit 5 clear. Bit 6's meaning is unknown. */
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pmu_write(D1671_REG_LEDCTL,
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(pmu_read(D1671_REG_LEDCTL) & ~0x20)
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| D1671_LEDCTL_ENABLE | D1671_LEDCTL_UNKNOWN);
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}
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void backlight_hw_off(void)
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{
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pmu_write(D1671_REG_LEDCTL,
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(pmu_read(D1671_REG_LEDCTL) & ~D1671_LEDCTL_ENABLE));
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}
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bool backlight_hw_init(void)
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{
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backlight_hw_brightness(DEFAULT_BRIGHTNESS_SETTING);
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backlight_hw_on();
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return true;
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}
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/* Kill the backlight, instantly. */
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void backlight_hw_kill(void)
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{
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backlight_hw_off();
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}
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