47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*
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* Copyright (C) 2011-2012 Apple Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include <debug.h>
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#include <target.h>
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#include <target/powerconfig.h>
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#if WITH_DEVICETREE
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bool
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target_get_property(enum target_property prop, void *data, int maxdata, int *retlen)
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{
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int length = 0;
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bool result = false;
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if ((result = target_get_property_base(prop, data, maxdata, retlen)) == false) {
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switch(prop) {
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case TARGET_PROPERTY_RESTORE_BACKLIGHT_LEVEL:
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// fix the restore backlight level at the precharge level,
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// to make sure the backlight does not cause the battery to
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// drain during restore
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if (maxdata >= (ssize_t)sizeof(uint32_t)) {
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result = true;
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length = sizeof(uint32_t);
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*(uint32_t *)data = PRECHARGE_BACKLIGHT_LEVEL;
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}
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break;
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default:
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break;
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}
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}
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if (retlen != NULL) *retlen = length;
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return result;
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}
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#endif
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