From e3873444990dd6f8a095d1f72b5ad45192f8c506 Mon Sep 17 00:00:00 2001 From: Grant Likely Date: Fri, 18 Jun 2010 11:09:59 -0600 Subject: 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 Acked-by: Benjamin Herrenschmidt Cc: Michal Simek Cc: "David S. Miller" Cc: Stephen Rothwell Cc: Jeremy Kerr --- include/linux/of_irq.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/linux/of_irq.h (limited to 'include/linux/of_irq.h') 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 +#include + +/* + * 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 */ -- cgit v1.2.2