diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2010-06-18 11:09:59 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2010-06-28 12:41:33 -0700 |
| commit | e3873444990dd6f8a095d1f72b5ad45192f8c506 (patch) | |
| tree | 9e9fbc43fd4ffde3ac7d41827e0ab9c5f98363f0 /include/linux/of_irq.h | |
| parent | b505ff5e7291cca6379549297e3852ce3622d550 (diff) | |
| download | lwn-e3873444990dd6f8a095d1f72b5ad45192f8c506.tar.gz lwn-e3873444990dd6f8a095d1f72b5ad45192f8c506.zip | |
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>
Diffstat (limited to 'include/linux/of_irq.h')
| -rw-r--r-- | include/linux/of_irq.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h new file mode 100644 index 000000000000..0e37c05b7dd8 --- /dev/null +++ b/include/linux/of_irq.h @@ -0,0 +1,41 @@ +#ifndef __OF_IRQ_H +#define __OF_IRQ_H + +#if defined(CONFIG_OF) +struct of_irq; +#include <linux/types.h> +#include <linux/of.h> + +/* + * irq_of_parse_and_map() is used ba all OF enabled platforms; but SPARC + * implements it differently. However, the prototype is the same for all, + * so declare it here regardless of the CONFIG_OF_IRQ setting. + */ +extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); + +#if defined(CONFIG_OF_IRQ) +/** + * of_irq - container for device_node/irq_specifier pair for an irq controller + * @controller: pointer to interrupt controller device tree node + * @size: size of interrupt specifier + * @specifier: array of cells @size long specifing the specific interrupt + * + * 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 */ +}; + +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); + +#endif /* CONFIG_OF_IRQ */ +#endif /* CONFIG_OF */ +#endif /* __OF_IRQ_H */ |