| Grant Likely | e387344 | 2010-06-18 11:09:59 -0600 | [diff] [blame^] | 1 | #ifndef __OF_IRQ_H |
| 2 | #define __OF_IRQ_H |
| 3 | |
| 4 | #if defined(CONFIG_OF) |
| 5 | struct of_irq; |
| 6 | #include <linux/types.h> |
| 7 | #include <linux/of.h> |
| 8 | |
| 9 | /* |
| 10 | * irq_of_parse_and_map() is used ba all OF enabled platforms; but SPARC |
| 11 | * implements it differently. However, the prototype is the same for all, |
| 12 | * so declare it here regardless of the CONFIG_OF_IRQ setting. |
| 13 | */ |
| 14 | extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); |
| 15 | |
| 16 | #if defined(CONFIG_OF_IRQ) |
| 17 | /** |
| 18 | * of_irq - container for device_node/irq_specifier pair for an irq controller |
| 19 | * @controller: pointer to interrupt controller device tree node |
| 20 | * @size: size of interrupt specifier |
| 21 | * @specifier: array of cells @size long specifing the specific interrupt |
| 22 | * |
| 23 | * This structure is returned when an interrupt is mapped. The controller |
| 24 | * field needs to be put() after use |
| 25 | */ |
| 26 | #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ |
| 27 | struct of_irq { |
| 28 | struct device_node *controller; /* Interrupt controller node */ |
| 29 | u32 size; /* Specifier size */ |
| 30 | u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ |
| 31 | }; |
| 32 | |
| 33 | extern int of_irq_map_one(struct device_node *device, int index, |
| 34 | struct of_irq *out_irq); |
| 35 | extern unsigned int irq_create_of_mapping(struct device_node *controller, |
| 36 | const u32 *intspec, |
| 37 | unsigned int intsize); |
| 38 | |
| 39 | #endif /* CONFIG_OF_IRQ */ |
| 40 | #endif /* CONFIG_OF */ |
| 41 | #endif /* __OF_IRQ_H */ |