| Emil Medve | b41e5ff | 2008-05-03 06:34:04 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 Freescale Semiconductor, Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License |
| 6 | * as published by the Free Software Foundation; either version |
| 7 | * 2 of the License, or (at your option) any later version. |
| 8 | */ |
| 9 | |
| 10 | #include <linux/device.h> /* devres_*(), devm_ioremap_release() */ |
| 11 | #include <linux/io.h> /* ioremap_flags() */ |
| 12 | #include <linux/module.h> /* EXPORT_SYMBOL() */ |
| 13 | |
| 14 | /** |
| 15 | * devm_ioremap_prot - Managed ioremap_flags() |
| 16 | * @dev: Generic device to remap IO address for |
| 17 | * @offset: BUS offset to map |
| 18 | * @size: Size of map |
| 19 | * @flags: Page flags |
| 20 | * |
| 21 | * Managed ioremap_prot(). Map is automatically unmapped on driver |
| 22 | * detach. |
| 23 | */ |
| 24 | void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset, |
| 25 | size_t size, unsigned long flags) |
| 26 | { |
| 27 | void __iomem **ptr, *addr; |
| 28 | |
| 29 | ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); |
| 30 | if (!ptr) |
| 31 | return NULL; |
| 32 | |
| 33 | addr = ioremap_flags(offset, size, flags); |
| 34 | if (addr) { |
| 35 | *ptr = addr; |
| 36 | devres_add(dev, ptr); |
| 37 | } else |
| 38 | devres_free(ptr); |
| 39 | |
| 40 | return addr; |
| 41 | } |
| 42 | EXPORT_SYMBOL(devm_ioremap_prot); |