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| author |   Matthias Brugger <matthias.bgg@gmail.com> | 2014-07-18 11:36:39 +0200 |
|---|---|---|
| committer |   Daniel Lezcano <daniel.lezcano@linaro.org> | 2014-07-23 12:02:30 +0200 |
| commit | efd342fb0031a17758571dce42e3f373d94e2fec (patch) | |
| tree | 914578b4b0944ae5ca884e18ffe13cd223dccb14 /include/linux/of_address.h | |
| parent | clocksource: sh_mtu2: Tidy up Kconfig typo for MTU2 (diff) | |
| download | wireguard-linux-efd342fb0031a17758571dce42e3f373d94e2fec.tar.xz wireguard-linux-efd342fb0031a17758571dce42e3f373d94e2fec.zip | |
of: Provide a function to request and map memory
A call to of_iomap does not request the memory region. This patch adds the
function of_io_request_and_map which requests the memory region before
mapping it.
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Suggested-by: Rob Herring <robh@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'include/linux/of_address.h')
| -rw-r--r-- | include/linux/of_address.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/of_address.h b/include/linux/of_address.h index c13b8782a4eb..fb7b7221e063 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -109,7 +109,12 @@ static inline bool of_dma_is_coherent(struct device_node *np) extern int of_address_to_resource(struct device_node *dev, int index, struct resource *r); void __iomem *of_iomap(struct device_node *node, int index); +void __iomem *of_io_request_and_map(struct device_node *device, + int index, char *name); #else + +#include <linux/io.h> + static inline int of_address_to_resource(struct device_node *dev, int index, struct resource *r) { @@ -120,6 +125,12 @@ static inline void __iomem *of_iomap(struct device_node *device, int index) { return NULL; } + +static inline void __iomem *of_io_request_and_map(struct device_node *device, + int index, char *name) +{ + return IOMEM_ERR_PTR(-EINVAL); +} #endif #if defined(CONFIG_OF_ADDRESS) && defined(CONFIG_PCI) |