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authorGrant Likely <grant.likely@secretlab.ca>2010-06-08 07:48:06 -0600
committerGrant Likely <grant.likely@secretlab.ca>2010-07-05 16:14:25 -0600
commit7dc2e1134a22dc242175d5321c0c9e97d16eb87b (patch)
tree213406e4688340c788b40a8eb272255e8c44c8fe /include/linux/of_irq.h
parentb83da291b4c73eaddc20e2edb614123a6d681b3b (diff)
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>
Diffstat (limited to 'include/linux/of_irq.h')
-rw-r--r--include/linux/of_irq.h29
1 files changed, 29 insertions, 0 deletions
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 0e37c05b7dd8..5929781c104d 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -4,6 +4,8 @@
#if defined(CONFIG_OF)
struct of_irq;
#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
#include <linux/of.h>
/*
@@ -30,11 +32,38 @@ struct of_irq {
u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
};
+/*
+ * Workarounds only applied to 32bit powermac machines
+ */
+#define OF_IMAP_OLDWORLD_MAC 0x00000001
+#define OF_IMAP_NO_PHANDLE 0x00000002
+
+#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
+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 /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
+#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 /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
+
+
+extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec,
+ u32 ointsize, const u32 *addr,
+ struct of_irq *out_irq);
extern int of_irq_map_one(struct device_node *device, int index,
struct of_irq *out_irq);
extern unsigned int irq_create_of_mapping(struct device_node *controller,
const u32 *intspec,
unsigned int intsize);
+extern int of_irq_to_resource(struct device_node *dev, int index,
+ struct resource *r);
#endif /* CONFIG_OF_IRQ */
#endif /* CONFIG_OF */