__devm_ioremap

Name:__devm_ioremap

Proto:static void __iomem *__devm_ioremap(struct device *dev, resource_size_t offset, resource_size_t size, enum devm_ioremap_type type)

Type:void

Parameter:

Type	Parameter	Name
struct device *	dev
resource_size_t	offset
resource_size_t	size
enum devm_ioremap_type	type

30

void __iomem * * ptr, * addr = NULL

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ptr = devres_alloc(devm_ioremap_release, size of ptr , GFP_KERNEL)

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If Not ptr Then Return NULL

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Case type == DEVM_IOREMAP

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addr = remap - map bus memory into CPU space*@offset: bus address of the memory*@size: size of the resource to map* ioremap performs a platform specific sequence of operations to* make bus memory CPU accessible via the readb/readw/readl/writeb/

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Break

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Case type == DEVM_IOREMAP_NC

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addr = ioremap_nocache(offset, size)

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Break

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Case type == DEVM_IOREMAP_UC

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addr = The default ioremap() behavior is non-cached; if you need something* else, you probably want one of the following.

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Break

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Case type == DEVM_IOREMAP_WC

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addr = ioremap_wc(offset, size)

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Break

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If addr Then

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ptr = addr

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devres_add(dev, ptr)

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Else devres_free(ptr)

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Return addr

**Caller**
Name	Describe
devm_ioremap	devm_ioremap - Managed ioremap()@dev: Generic device to remap IO address for@offset: Resource address to map@size: Size of map Managed ioremap(). Map is automatically unmapped on driver detach.
devm_ioremap_uc	devm_ioremap_uc - Managed ioremap_uc()@dev: Generic device to remap IO address for@offset: Resource address to map@size: Size of map Managed ioremap_uc(). Map is automatically unmapped on driver detach.
devm_ioremap_nocache	devm_ioremap_nocache - Managed ioremap_nocache()@dev: Generic device to remap IO address for@offset: Resource address to map@size: Size of map Managed ioremap_nocache(). Map is automatically unmapped on driver* detach.
devm_ioremap_wc	devm_ioremap_wc - Managed ioremap_wc()@dev: Generic device to remap IO address for@offset: Resource address to map@size: Size of map Managed ioremap_wc(). Map is automatically unmapped on driver detach.
__devm_ioremap_resource

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