of/address: merge of_iomap()

Merge common code between Microblaze and PowerPC.  This patch creates
new of_address.h and address.c files to containing address translation
and mapping routines.  First routine to be moved it of_iomap()

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Michal Simek <monstr@monstr.eu>
CC: Stephen Rothwell <sfr@canb.auug.org.au>

diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h
index 5fbdfe76fe76b89d41685dbe67e772b388f13bbb..6411c3b3a80f8ba18984e7e7731026318bde794b 100644 (file)
--- a/arch/microblaze/include/asm/prom.h
+++ b/arch/microblaze/include/asm/prom.h
@@ -20,6 +20,7 @@
 #ifndef __ASSEMBLY__
 
 #include <linux/types.h>
+#include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/of_fdt.h>
 #include <linux/proc_fs.h>
@@ -103,15 +104,6 @@ extern const void *of_get_mac_address(struct device_node *np);
 struct pci_dev;
 extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
 
-/**
- * of_iomap - Maps the memory mapped IO for a given device_node
- * @device:    the device whose io range will be mapped
- * @index:     index of the io range
- *
- * Returns a pointer to the mapped memory
- */
-extern void __iomem *of_iomap(struct device_node *device, int index);
-
 #endif /* __ASSEMBLY__ */
 #endif /* __KERNEL__ */
 #endif /* _ASM_MICROBLAZE_PROM_H */

diff --git a/arch/microblaze/kernel/prom_parse.c b/arch/microblaze/kernel/prom_parse.c
index e28968fa34c18ec4e0140b376e06fad38b033fc0..1159ba52ad4adc5b384eedf09f604d5b466c367f 100644 (file)
--- a/arch/microblaze/kernel/prom_parse.c
+++ b/arch/microblaze/kernel/prom_parse.c
@@ -681,14 +681,3 @@ const void *of_get_mac_address(struct device_node *np)
        return NULL;
 }
 EXPORT_SYMBOL(of_get_mac_address);
-
-void __iomem *of_iomap(struct device_node *np, int index)
-{
-       struct resource res;
-
-       if (of_address_to_resource(np, index, &res))
-               return NULL;
-
-       return ioremap(res.start, 1 + res.end - res.start);
-}
-EXPORT_SYMBOL(of_iomap);

diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 10d5ee556702a6a9f1aa89be9116b8d9cbd4d039..0abe379c6f33f10e93cda7a30dd5b607211d4e2d 100644 (file)
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -18,6 +18,7 @@
  */
 #include <linux/types.h>
 #include <linux/of_fdt.h>
+#include <linux/of_address.h>
 #include <linux/of_irq.h>
 #include <linux/proc_fs.h>
 #include <linux/platform_device.h>
@@ -119,14 +120,5 @@ extern const void *of_get_mac_address(struct device_node *np);
 struct pci_dev;
 extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
 
-/**
- * of_iomap - Maps the memory mapped IO for a given device_node
- * @device:    the device whose io range will be mapped
- * @index:     index of the io range
- *
- * Returns a pointer to the mapped memory
- */
-extern void __iomem *of_iomap(struct device_node *device, int index);
-
 #endif /* __KERNEL__ */
 #endif /* _POWERPC_PROM_H */

diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c
index d61a5c5fe690c66b07422adf14bdf2056881ca1d..1d5d4f6dfef5403b6a353e2000dfd4762a6cf489 100644 (file)
--- a/arch/powerpc/kernel/prom_parse.c
+++ b/arch/powerpc/kernel/prom_parse.c
@@ -715,14 +715,3 @@ const void *of_get_mac_address(struct device_node *np)
        return NULL;
 }
 EXPORT_SYMBOL(of_get_mac_address);
-
-void __iomem *of_iomap(struct device_node *np, int index)
-{
-       struct resource res;
-
-       if (of_address_to_resource(np, index, &res))
-               return NULL;
-
-       return ioremap(res.start, 1 + res.end - res.start);
-}
-EXPORT_SYMBOL(of_iomap);

diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index b87495efa16e30eb6eafaa0c2f1dd92246c659fd..097f42aebe90ac7d72d005af41536837caedfef1 100644 (file)
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -6,6 +6,10 @@ config OF_DYNAMIC
        def_bool y
        depends on OF && PPC_OF
 
+config OF_ADDRESS
+       def_bool y
+       depends on OF && !SPARC
+
 config OF_IRQ
        def_bool y
        depends on OF && !SPARC

diff --git a/drivers/of/Makefile b/drivers/of/Makefile
index 3631a5ea0b47e6c045d4489d77d25defed0bc3f9..0052c405463acfe1d692aaf4dadf22dc455fc771 100644 (file)
--- a/drivers/of/Makefile
+++ b/drivers/of/Makefile
@@ -1,5 +1,6 @@
 obj-y = base.o
 obj-$(CONFIG_OF_FLATTREE) += fdt.o
+obj-$(CONFIG_OF_ADDRESS)  += address.o
 obj-$(CONFIG_OF_IRQ)    += irq.o
 obj-$(CONFIG_OF_DEVICE) += device.o platform.o
 obj-$(CONFIG_OF_GPIO)   += gpio.o

diff --git a/drivers/of/address.c b/drivers/of/address.c
new file mode 100644 (file)
index 0000000..258528d
--- /dev/null
+++ b/drivers/of/address.c
@@ -0,0 +1,22 @@
+
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/of_address.h>
+
+/**
+ * of_iomap - Maps the memory mapped IO for a given device_node
+ * @device:    the device whose io range will be mapped
+ * @index:     index of the io range
+ *
+ * Returns a pointer to the mapped memory
+ */
+void __iomem *of_iomap(struct device_node *np, int index)
+{
+       struct resource res;
+
+       if (of_address_to_resource(np, index, &res))
+               return NULL;
+
+       return ioremap(res.start, 1 + res.end - res.start);
+}
+EXPORT_SYMBOL(of_iomap);

diff --git a/include/linux/of_address.h b/include/linux/of_address.h
new file mode 100644 (file)
index 0000000..570831d
--- /dev/null
+++ b/include/linux/of_address.h
@@ -0,0 +1,9 @@
+#ifndef __OF_ADDRESS_H
+#define __OF_ADDRESS_H
+#include <linux/ioport.h>
+#include <linux/of.h>
+
+extern void __iomem *of_iomap(struct device_node *device, int index);
+
+#endif /* __OF_ADDRESS_H */
+