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| author | Grant Likely <grant.likely@secretlab.ca> | 2010-06-08 07:48:06 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-07-05 16:14:25 -0600 |
| commit | 7dc2e1134a22dc242175d5321c0c9e97d16eb87b (patch) | |
| tree | 213406e4688340c788b40a8eb272255e8c44c8fe /include/linux/of_irq.h | |
| parent | b83da291b4c73eaddc20e2edb614123a6d681b3b (diff) | |
| download | lwn-7dc2e1134a22dc242175d5321c0c9e97d16eb87b.tar.gz lwn-7dc2e1134a22dc242175d5321c0c9e97d16eb87b.zip | |
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.h | 29 |
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 */ |