iBoot/target/ipad2b/properties.c

47 lines
1.1 KiB
C

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