drivers: provide devm_platform_get_and_ioremap_resource()
Since commit "drivers: provide devm_platform_ioremap_resource()", it was wrap platform_get_resource() and devm_ioremap_resource() as single helper devm_platform_ioremap_resource(). but now, many drivers still used platform_get_resource() and devm_ioremap_resource() together in the kernel tree. The reason can not be replaced is they still need use the resource variables obtained by platform_get_resource(). so provide this helper. Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Suggested-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> Link: https://lore.kernel.org/r/20200323160612.17277-2-zhengdejin5@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -62,6 +62,28 @@ struct resource *platform_get_resource(struct platform_device *dev,
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EXPORT_SYMBOL_GPL(platform_get_resource);
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#ifdef CONFIG_HAS_IOMEM
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/**
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* devm_platform_get_and_ioremap_resource - call devm_ioremap_resource() for a
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* platform device and get resource
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*
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* @pdev: platform device to use both for memory resource lookup as well as
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* resource management
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* @index: resource index
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* @res: optional output parameter to store a pointer to the obtained resource.
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*/
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void __iomem *
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devm_platform_get_and_ioremap_resource(struct platform_device *pdev,
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unsigned int index, struct resource **res)
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{
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struct resource *r;
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r = platform_get_resource(pdev, IORESOURCE_MEM, index);
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if (res)
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*res = r;
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return devm_ioremap_resource(&pdev->dev, r);
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}
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EXPORT_SYMBOL_GPL(devm_platform_get_and_ioremap_resource);
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/**
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* devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
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* device
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@ -55,6 +55,9 @@ extern struct device *
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platform_find_device_by_driver(struct device *start,
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const struct device_driver *drv);
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extern void __iomem *
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devm_platform_get_and_ioremap_resource(struct platform_device *pdev,
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unsigned int index, struct resource **res);
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extern void __iomem *
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devm_platform_ioremap_resource(struct platform_device *pdev,
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unsigned int index);
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extern void __iomem *
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