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Commit a060c210 authored by Marc Gonzalez's avatar Marc Gonzalez Committed by Bjorn Helgaas
Browse files

of/pci: Add of_pci_dma_range_parser_init() for dma-ranges parsing support 



Several host bridge drivers duplicate of_pci_range_parser_init() in order
to parse their dma-ranges property.

Provide of_pci_dma_range_parser_init() for that use case.

Signed-off-by: default avatarMarc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 9e66317d

drivers/of/address.c

+16 −3
Original line number Diff line number Diff line
@@ -232,8 +232,8 @@ int of_pci_address_to_resource(struct device_node *dev, int bar, 
}

EXPORT_SYMBOL_GPL(of_pci_address_to_resource);



int of_pci_range_parser_init(struct of_pci_range_parser *parser,

				struct device_node *node)

static int parser_init(struct of_pci_range_parser *parser,

			struct device_node *node, const char *name)

{

	const int na = 3, ns = 2;

	int rlen;
@@ -242,7 +242,7 @@ int of_pci_range_parser_init(struct of_pci_range_parser *parser, 
	parser->pna = of_n_addr_cells(node);

	parser->np = parser->pna + na + ns;



	parser->range = of_get_property(node, "ranges", &rlen);

	parser->range = of_get_property(node, name, &rlen);

	if (parser->range == NULL)

		return -ENOENT;
@@ -250,8 +250,21 @@ int of_pci_range_parser_init(struct of_pci_range_parser *parser, 


	return 0;

}



int of_pci_range_parser_init(struct of_pci_range_parser *parser,

				struct device_node *node)

{

	return parser_init(parser, node, "ranges");

}

EXPORT_SYMBOL_GPL(of_pci_range_parser_init);



int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,

				struct device_node *node)

{

	return parser_init(parser, node, "dma-ranges");

}

EXPORT_SYMBOL_GPL(of_pci_dma_range_parser_init);



struct of_pci_range *of_pci_range_parser_one(struct of_pci_range_parser *parser,

						struct of_pci_range *range)

{

include/linux/of_address.h

+9 −1
Original line number Diff line number Diff line
@@ -49,6 +49,8 @@ extern const __be32 *of_get_address(struct device_node *dev, int index, 


extern int of_pci_range_parser_init(struct of_pci_range_parser *parser,

			struct device_node *node);

extern int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,

			struct device_node *node);

extern struct of_pci_range *of_pci_range_parser_one(

					struct of_pci_range_parser *parser,

					struct of_pci_range *range);
@@ -85,7 +87,13 @@ static inline const __be32 *of_get_address(struct device_node *dev, int index, 
static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser,

			struct device_node *node)

{

	return -1;

	return -ENOSYS;

}



static inline int of_pci_dma_range_parser_init(struct of_pci_range_parser *parser,

			struct device_node *node)

{

	return -ENOSYS;

}



static inline struct of_pci_range *of_pci_range_parser_one(