| 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> |
| Grant Likely | 7dc2e11 | 2010-06-08 07:48:06 -0600 | [diff] [blame] | 7 | #include <linux/errno.h> |
| Grant Likely | 530719b | 2010-10-21 11:34:55 -0600 | [diff] [blame] | 8 | #include <linux/irq.h> |
| Grant Likely | d593f25 | 2012-02-24 08:24:17 -0700 | [diff] [blame] | 9 | #include <linux/irqdomain.h> |
| Grant Likely | 7dc2e11 | 2010-06-08 07:48:06 -0600 | [diff] [blame] | 10 | #include <linux/ioport.h> |
| Grant Likely | e387344 | 2010-06-18 11:09:59 -0600 | [diff] [blame] | 11 | #include <linux/of.h> |
| 12 | |
| 13 | /* |
| Thomas Abraham | 766644d | 2012-03-25 20:32:49 +0530 | [diff] [blame] | 14 | * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC |
| Grant Likely | e387344 | 2010-06-18 11:09:59 -0600 | [diff] [blame] | 15 | * implements it differently. However, the prototype is the same for all, |
| 16 | * so declare it here regardless of the CONFIG_OF_IRQ setting. |
| 17 | */ |
| 18 | extern unsigned int irq_of_parse_and_map(struct device_node *node, int index); |
| 19 | |
| 20 | #if defined(CONFIG_OF_IRQ) |
| 21 | /** |
| 22 | * of_irq - container for device_node/irq_specifier pair for an irq controller |
| 23 | * @controller: pointer to interrupt controller device tree node |
| 24 | * @size: size of interrupt specifier |
| 25 | * @specifier: array of cells @size long specifing the specific interrupt |
| 26 | * |
| 27 | * This structure is returned when an interrupt is mapped. The controller |
| 28 | * field needs to be put() after use |
| 29 | */ |
| 30 | #define OF_MAX_IRQ_SPEC 4 /* We handle specifiers of at most 4 cells */ |
| 31 | struct of_irq { |
| 32 | struct device_node *controller; /* Interrupt controller node */ |
| 33 | u32 size; /* Specifier size */ |
| 34 | u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */ |
| 35 | }; |
| 36 | |
| Rob Herring | c71a54b | 2011-09-20 15:13:50 -0500 | [diff] [blame] | 37 | typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); |
| 38 | |
| Grant Likely | 7dc2e11 | 2010-06-08 07:48:06 -0600 | [diff] [blame] | 39 | /* |
| 40 | * Workarounds only applied to 32bit powermac machines |
| 41 | */ |
| 42 | #define OF_IMAP_OLDWORLD_MAC 0x00000001 |
| 43 | #define OF_IMAP_NO_PHANDLE 0x00000002 |
| 44 | |
| 45 | #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) |
| 46 | extern unsigned int of_irq_workarounds; |
| 47 | extern struct device_node *of_irq_dflt_pic; |
| 48 | extern int of_irq_map_oldworld(struct device_node *device, int index, |
| 49 | struct of_irq *out_irq); |
| 50 | #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
| 51 | #define of_irq_workarounds (0) |
| 52 | #define of_irq_dflt_pic (NULL) |
| 53 | static inline int of_irq_map_oldworld(struct device_node *device, int index, |
| 54 | struct of_irq *out_irq) |
| 55 | { |
| 56 | return -EINVAL; |
| 57 | } |
| 58 | #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
| 59 | |
| 60 | |
| 61 | extern int of_irq_map_raw(struct device_node *parent, const u32 *intspec, |
| 62 | u32 ointsize, const u32 *addr, |
| 63 | struct of_irq *out_irq); |
| Grant Likely | e387344 | 2010-06-18 11:09:59 -0600 | [diff] [blame] | 64 | extern int of_irq_map_one(struct device_node *device, int index, |
| 65 | struct of_irq *out_irq); |
| 66 | extern unsigned int irq_create_of_mapping(struct device_node *controller, |
| 67 | const u32 *intspec, |
| 68 | unsigned int intsize); |
| Grant Likely | 7dc2e11 | 2010-06-08 07:48:06 -0600 | [diff] [blame] | 69 | extern int of_irq_to_resource(struct device_node *dev, int index, |
| 70 | struct resource *r); |
| Andres Salomon | 52f6537 | 2010-10-10 21:35:05 -0600 | [diff] [blame] | 71 | extern int of_irq_count(struct device_node *dev); |
| 72 | extern int of_irq_to_resource_table(struct device_node *dev, |
| 73 | struct resource *res, int nr_irqs); |
| Michael Ellerman | 0b2e9a8 | 2011-04-14 22:31:57 +0000 | [diff] [blame] | 74 | extern struct device_node *of_irq_find_parent(struct device_node *child); |
| Grant Likely | e387344 | 2010-06-18 11:09:59 -0600 | [diff] [blame] | 75 | |
| Rob Herring | c71a54b | 2011-09-20 15:13:50 -0500 | [diff] [blame] | 76 | extern void of_irq_init(const struct of_device_id *matches); |
| Grant Likely | 08a543a | 2011-07-26 03:19:06 -0600 | [diff] [blame] | 77 | |
| Grant Likely | e387344 | 2010-06-18 11:09:59 -0600 | [diff] [blame] | 78 | #endif /* CONFIG_OF_IRQ */ |
| Thomas Abraham | 766644d | 2012-03-25 20:32:49 +0530 | [diff] [blame] | 79 | |
| 80 | #else /* !CONFIG_OF */ |
| 81 | static inline unsigned int irq_of_parse_and_map(struct device_node *dev, |
| 82 | int index) |
| 83 | { |
| 84 | return 0; |
| 85 | } |
| 86 | #endif /* !CONFIG_OF */ |
| 87 | |
| Grant Likely | e387344 | 2010-06-18 11:09:59 -0600 | [diff] [blame] | 88 | #endif /* __OF_IRQ_H */ |