From ff61bacd77f258bd2ed145efb69e5449b115d4fe Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Tue, 28 Mar 2023 15:16:00 -0500 Subject: of/address: Add of_property_read_reg() helper Add a helper, of_property_read_reg(), to read "reg" entries untranslated address and size. This function is intended mainly for cases with an untranslatable "reg" address (i.e. not MMIO). There's also a few translatable cases such as address cells containing a bus chip-select number. Link: https://lore.kernel.org/r/20230328-dt-address-helpers-v1-5-e2456c3e77ab@kernel.org Signed-off-by: Rob Herring --- include/linux/of_address.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/linux/of_address.h') diff --git a/include/linux/of_address.h b/include/linux/of_address.h index 5292f62c1baa..26a19daf0d09 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -72,6 +72,8 @@ void __iomem *of_io_request_and_map(struct device_node *device, extern const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no, u64 *size, unsigned int *flags); +int of_property_read_reg(struct device_node *np, int idx, u64 *addr, u64 *size); + 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, @@ -106,6 +108,11 @@ static inline const __be32 *__of_get_address(struct device_node *dev, int index, return NULL; } +static inline int of_property_read_reg(struct device_node *np, int idx, u64 *addr, u64 *size) +{ + return -ENOSYS; +} + static inline int of_pci_range_parser_init(struct of_pci_range_parser *parser, struct device_node *node) { -- cgit v1.2.3