43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2008 Freescale Semiconductor, Inc.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or
|
||
|
|
* modify it under the terms of the GNU General Public License
|
||
|
|
* as published by the Free Software Foundation; either version
|
||
|
|
* 2 of the License, or (at your option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/device.h> /* devres_*(), devm_ioremap_release() */
|
||
|
|
#include <linux/io.h> /* ioremap_flags() */
|
||
|
|
#include <linux/module.h> /* EXPORT_SYMBOL() */
|
||
|
|
|
||
|
|
/**
|
||
|
|
* devm_ioremap_prot - Managed ioremap_flags()
|
||
|
|
* @dev: Generic device to remap IO address for
|
||
|
|
* @offset: BUS offset to map
|
||
|
|
* @size: Size of map
|
||
|
|
* @flags: Page flags
|
||
|
|
*
|
||
|
|
* Managed ioremap_prot(). Map is automatically unmapped on driver
|
||
|
|
* detach.
|
||
|
|
*/
|
||
|
|
void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset,
|
||
|
|
size_t size, unsigned long flags)
|
||
|
|
{
|
||
|
|
void __iomem **ptr, *addr;
|
||
|
|
|
||
|
|
ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL);
|
||
|
|
if (!ptr)
|
||
|
|
return NULL;
|
||
|
|
|
||
|
|
addr = ioremap_flags(offset, size, flags);
|
||
|
|
if (addr) {
|
||
|
|
*ptr = addr;
|
||
|
|
devres_add(dev, ptr);
|
||
|
|
} else
|
||
|
|
devres_free(ptr);
|
||
|
|
|
||
|
|
return addr;
|
||
|
|
}
|
||
|
|
EXPORT_SYMBOL(devm_ioremap_prot);
|