of/irq: Move irq_of_parse_and_map() to common code

Merge common code between PowerPC and Microblaze.  SPARC implements
irq_of_parse_and_map(), but the implementation is different, so it
does not use this code.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michal Simek <monstr@monstr.eu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Jeremy Kerr <jeremy.kerr@canonical.com>

7 files changed, 6 insertions, 128 deletions

diff --git a/arch/microblaze/include/asm/irq.h b/arch/microblaze/include/asm/irq.h
index 31a35c33df63..ec5583d6111c 100644
--- a/arch/microblaze/include/asm/irq.h
+++ b/arch/microblaze/include/asm/irq.h
@@ -27,17 +27,6 @@ extern unsigned int nr_irq;
 struct pt_regs;
 extern void do_IRQ(struct pt_regs *regs);
 
-/**
- * irq_of_parse_and_map - Parse and Map an interrupt into linux virq space
- * @device: Device node of the device whose interrupt is to be mapped
- * @index: Index of the interrupt to map
- *
- * This function is a wrapper that chains of_irq_map_one() and
- * irq_create_of_mapping() to make things easier to callers
- */
-struct device_node;
-extern unsigned int irq_of_parse_and_map(struct device_node *dev, int index);
-
 /** FIXME - not implement
  * irq_dispose_mapping - Unmap an interrupt
  * @virq: linux virq number of the interrupt to unmap
@@ -62,17 +51,4 @@ struct irq_host;
 extern unsigned int irq_create_mapping(struct irq_host *host,
 					irq_hw_number_t hwirq);
 
-/**
- * irq_create_of_mapping - Map a hardware interrupt into linux virq space
- * @controller: Device node of the interrupt controller
- * @inspec: Interrupt specifier from the device-tree
- * @intsize: Size of the interrupt specifier from the device-tree
- *
- * This function is identical to irq_create_mapping except that it takes
- * as input informations straight from the device-tree (typically the results
- * of the of_irq_map_*() functions.
- */
-extern unsigned int irq_create_of_mapping(struct device_node *controller,
-					u32 *intspec, unsigned int intsize);
-
 #endif /* _ASM_MICROBLAZE_IRQ_H */
diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h
index e7d67a329bd7..e9fb2eb0035d 100644
--- 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_irq.h>
 #include <linux/of_fdt.h>
 #include <linux/proc_fs.h>
 #include <linux/platform_device.h>
@@ -92,18 +93,6 @@ extern const void *of_get_mac_address(struct device_node *np);
  * OF interrupt mapping
  */
 
-/* This structure is returned when an interrupt is mapped. The controller
- * field needs to be put() after use
- */
-
-#define OF_MAX_IRQ_SPEC		4 /* We handle specifiers of at most 4 cells */
-
-struct of_irq {
-	struct device_node *controller; /* Interrupt controller node */
-	u32 size; /* Specifier size */
-	u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
-};
-
 /**
  * of_irq_map_init - Initialize the irq remapper
  * @flags:	flags defining workarounds to enable
@@ -139,19 +128,6 @@ extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
 			struct of_irq *out_irq);
 
 /**
- * of_irq_map_one - Resolve an interrupt for a device
- * @device:	the device whose interrupt is to be resolved
- * @index:	index of the interrupt to resolve
- * @out_irq:	structure of_irq filled by this function
- *
- * This function resolves an interrupt, walking the tree, for a given
- * device-tree node. It's the high level pendant to of_irq_map_raw().
- * It also implements the workarounds for OldWolrd Macs.
- */
-extern int of_irq_map_one(struct device_node *device, int index,
-			struct of_irq *out_irq);
-
-/**
  * of_irq_map_pci - Resolve the interrupt for a PCI device
  * @pdev:	the device whose interrupt is to be resolved
  * @out_irq:	structure of_irq filled by this function
diff --git a/arch/microblaze/kernel/irq.c b/arch/microblaze/kernel/irq.c
index 8f120aca123d..dd32b09b4a3c 100644
--- a/arch/microblaze/kernel/irq.c
+++ b/arch/microblaze/kernel/irq.c
@@ -17,20 +17,10 @@
 #include <linux/seq_file.h>
 #include <linux/kernel_stat.h>
 #include <linux/irq.h>
+#include <linux/of_irq.h>
 
 #include <asm/prom.h>
 
-unsigned int irq_of_parse_and_map(struct device_node *dev, int index)
-{
-	struct of_irq oirq;
-
-	if (of_irq_map_one(dev, index, &oirq))
-		return NO_IRQ;
-
-	return oirq.specifier[0];
-}
-EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
-
 static u32 concurrent_irq;
 
 void __irq_entry do_IRQ(struct pt_regs *regs)
@@ -104,7 +94,7 @@ unsigned int irq_create_mapping(struct irq_host *host, irq_hw_number_t hwirq)
 EXPORT_SYMBOL_GPL(irq_create_mapping);
 
 unsigned int irq_create_of_mapping(struct device_node *controller,
-					u32 *intspec, unsigned int intsize)
+				   const u32 *intspec, unsigned int intsize)
 {
 	return intspec[0];
 }
diff --git a/arch/powerpc/include/asm/irq.h b/arch/powerpc/include/asm/irq.h
index e054baef1845..4e3051595b2b 100644
--- a/arch/powerpc/include/asm/irq.h
+++ b/arch/powerpc/include/asm/irq.h
@@ -300,34 +300,6 @@ extern unsigned int irq_alloc_virt(struct irq_host *host,
  */
 extern void irq_free_virt(unsigned int virq, unsigned int count);
 
-
-/* -- OF helpers -- */
-
-/**
- * irq_create_of_mapping - Map a hardware interrupt into linux virq space
- * @controller: Device node of the interrupt controller
- * @inspec: Interrupt specifier from the device-tree
- * @intsize: Size of the interrupt specifier from the device-tree
- *
- * This function is identical to irq_create_mapping except that it takes
- * as input informations straight from the device-tree (typically the results
- * of the of_irq_map_*() functions.
- */
-extern unsigned int irq_create_of_mapping(struct device_node *controller,
-					  const u32 *intspec, unsigned int intsize);
-
-/**
- * irq_of_parse_and_map - Parse and Map an interrupt into linux virq space
- * @device: Device node of the device whose interrupt is to be mapped
- * @index: Index of the interrupt to map
- *
- * This function is a wrapper that chains of_irq_map_one() and
- * irq_create_of_mapping() to make things easier to callers
- */
-extern unsigned int irq_of_parse_and_map(struct device_node *dev, int index);
-
-/* -- End OF helpers -- */
-
 /**
  * irq_early_init - Init irq remapping subsystem
  */
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index ddd408a93b5a..47d41b67c94d 100644
--- 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_irq.h>
 #include <linux/proc_fs.h>
 #include <linux/platform_device.h>
 #include <asm/irq.h>
@@ -108,18 +109,6 @@ extern const void *of_get_mac_address(struct device_node *np);
  * OF interrupt mapping
  */
 
-/* This structure is returned when an interrupt is mapped. The controller
- * field needs to be put() after use
- */
-
-#define OF_MAX_IRQ_SPEC		 4 /* We handle specifiers of at most 4 cells */
-
-struct of_irq {
-	struct device_node *controller;	/* Interrupt controller node */
-	u32 size;			/* Specifier size */
-	u32 specifier[OF_MAX_IRQ_SPEC];	/* Specifier copy */
-};
-
 /**
  * of_irq_map_init - Initialize the irq remapper
  * @flags:	flags defining workarounds to enable
@@ -154,20 +143,6 @@ extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
 			  u32 ointsize, const u32 *addr,
 			  struct of_irq *out_irq);
 
-
-/**
- * of_irq_map_one - Resolve an interrupt for a device
- * @device:	the device whose interrupt is to be resolved
- * @index:     	index of the interrupt to resolve
- * @out_irq:	structure of_irq filled by this function
- *
- * This function resolves an interrupt, walking the tree, for a given
- * device-tree node. It's the high level pendant to of_irq_map_raw().
- * It also implements the workarounds for OldWolrd Macs.
- */
-extern int of_irq_map_one(struct device_node *device, int index,
-			  struct of_irq *out_irq);
-
 /**
  * of_irq_map_pci - Resolve the interrupt for a PCI device
  * @pdev:	the device whose interrupt is to be resolved
diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index 30817d9b20cb..2676ef288bf5 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -53,6 +53,8 @@
 #include <linux/bootmem.h>
 #include <linux/pci.h>
 #include <linux/debugfs.h>
+#include <linux/of.h>
+#include <linux/of_irq.h>
 
 #include <asm/uaccess.h>
 #include <asm/system.h>
@@ -813,18 +815,6 @@ unsigned int irq_create_of_mapping(struct device_node *controller,
 }
 EXPORT_SYMBOL_GPL(irq_create_of_mapping);
 
-unsigned int irq_of_parse_and_map(struct device_node *dev, int index)
-{
-	struct of_irq oirq;
-
-	if (of_irq_map_one(dev, index, &oirq))
-		return NO_IRQ;
-
-	return irq_create_of_mapping(oirq.controller, oirq.specifier,
-				     oirq.size);
-}
-EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
-
 void irq_dispose_mapping(unsigned int virq)
 {
 	struct irq_host *host;
diff --git a/arch/sparc/include/asm/prom.h b/arch/sparc/include/asm/prom.h
index f845828ca4c6..ac695742df85 100644
--- a/arch/sparc/include/asm/prom.h
+++ b/arch/sparc/include/asm/prom.h
@@ -56,7 +56,6 @@ extern void of_fill_in_cpu_data(void);
  * register them in the of_device objects, whereas powerpc computes them
  * on request.
  */
-extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
 static inline void irq_dispose_mapping(unsigned int virq)
 {
 }