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https://github.com/torvalds/linux
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6b884a8d50
Merge common code between Microblaze and PowerPC. This patch creates new of_address.h and address.c files to containing address translation and mapping routines. First routine to be moved it of_iomap() Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> CC: Michal Simek <monstr@monstr.eu> CC: Stephen Rothwell <sfr@canb.auug.org.au>
23 lines
508 B
C
23 lines
508 B
C
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#include <linux/io.h>
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#include <linux/ioport.h>
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#include <linux/of_address.h>
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/**
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* of_iomap - Maps the memory mapped IO for a given device_node
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* @device: the device whose io range will be mapped
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* @index: index of the io range
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*
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* Returns a pointer to the mapped memory
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*/
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void __iomem *of_iomap(struct device_node *np, int index)
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{
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struct resource res;
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if (of_address_to_resource(np, index, &res))
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return NULL;
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return ioremap(res.start, 1 + res.end - res.start);
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}
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EXPORT_SYMBOL(of_iomap);
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