of/irq: merge irq mapping code

Merge common irq mapping code between PowerPC and Microblaze.

This patch merges of_irq_find_parent(), of_irq_map_raw() and
of_irq_map_one().  The functions are dependent on one another, so all
three are merged in a single patch.  Other than cosmetic difference
(ie. DBG() vs. pr_debug()), the implementations are identical.

of_irq_to_resource() is also merged, but in this case the
implementations are different.  This patch drops the microblaze version
and uses the powerpc implementation unchanged.  The microblaze version
essentially open-coded irq_of_parse_and_map() which it does not need
to do.  Therefore the powerpc version is safe to adopt.

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

1 files changed, 0 insertions, 47 deletions

diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 4486765db6e7..10d5ee556702 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -105,50 +105,6 @@ struct device_node *of_find_next_cache_node(struct device_node *np);
 /* Get the MAC address */
 extern const void *of_get_mac_address(struct device_node *np);
 
-/*
- * OF interrupt mapping
- */
-
-#define OF_IMAP_OLDWORLD_MAC	0x00000001
-#define OF_IMAP_NO_PHANDLE	0x00000002
-
-#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
-/* Workarounds only needed for 32bit powermac machines */
-extern unsigned int of_irq_workarounds;
-extern struct device_node *of_irq_dflt_pic;
-extern int of_irq_map_oldworld(struct device_node *device, int index,
-			       struct of_irq *out_irq);
-#else
-#define of_irq_workarounds (0)
-#define of_irq_dflt_pic (NULL)
-static inline int of_irq_map_oldworld(struct device_node *device, int index,
-				      struct of_irq *out_irq)
-{
-	return -EINVAL;
-}
-#endif
-
-/**
- * of_irq_map_raw - Low level interrupt tree parsing
- * @parent:	the device interrupt parent
- * @intspec:	interrupt specifier ("interrupts" property of the device)
- * @ointsize:   size of the passed in interrupt specifier
- * @addr:	address specifier (start of "reg" property of the device)
- * @out_irq:	structure of_irq filled by this function
- *
- * Returns 0 on success and a negative number on error
- *
- * This function is a low-level interrupt tree walking function. It
- * can be used to do a partial walk with synthetized reg and interrupts
- * properties, for example when resolving PCI interrupts when no device
- * node exist for the parent.
- *
- */
-
-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_pci - Resolve the interrupt for a PCI device
  * @pdev:	the device whose interrupt is to be resolved
@@ -163,9 +119,6 @@ extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
 struct pci_dev;
 extern int of_irq_map_pci(struct pci_dev *pdev, struct of_irq *out_irq);
 
-extern int of_irq_to_resource(struct device_node *dev, int index,
-			struct resource *r);
-
 /**
  * of_iomap - Maps the memory mapped IO for a given device_node
  * @device:	the device whose io range will be mapped