int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq) { struct device_node *p; const __be32 *intspec, *tmp, *addr; u32 intsize, intlen; int res = -EINVAL; pr_debug("of_irq_map_one: dev=%s, index=%d\n", device->full_name, index); /* */ if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) return of_irq_map_oldworld(device, index, out_irq); /* */ intspec = of_get_property(device, "interrupts", &intlen); if (intspec == NULL) return -EINVAL; intlen /= sizeof(*intspec); pr_debug(" intspec=%d intlen=%d\n", be32_to_cpup(intspec), intlen); /* */ addr = of_get_property(device, "reg", NULL); /* */ p = of_irq_find_parent(device); if (p == NULL) return -EINVAL; /* */ tmp = of_get_property(p, "#interrupt-cells", NULL); if (tmp == NULL) goto out; intsize = be32_to_cpu(*tmp); pr_debug(" intsize=%d intlen=%d\n", intsize, intlen); /* */ if ((index + 1) * intsize > intlen) goto out; /* */ res = of_irq_map_raw(p, intspec + index * intsize, intsize, addr, out_irq); out: of_node_put(p); return res; }
/** * of_irq_map_one - Resolve an interrupt for a device * @device: the device whose interrupt is to be resolved * @index: index of the interrupt to resolve * @out_irq: structure of_irq filled by this function * * This function resolves an interrupt, walking the tree, for a given * device-tree node. It's the high level pendant to of_irq_map_raw(). */ int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq) { struct device_node *p; const __be32 *intspec, *tmp, *addr; u32 intsize, intlen; int res = -EINVAL; pr_debug("of_irq_map_one: dev=%s, index=%d\n", of_node_full_name(device), index); /* OldWorld mac stuff is "special", handle out of line */ if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) return of_irq_map_oldworld(device, index, out_irq); /* Get the interrupts property */ intspec = of_get_property(device, "interrupts", &intlen); if (intspec == NULL) return -EINVAL; intlen /= sizeof(*intspec); pr_debug(" intspec=%d intlen=%d\n", be32_to_cpup(intspec), intlen); /* Get the reg property (if any) */ addr = of_get_property(device, "reg", NULL); /* Look for the interrupt parent. */ p = of_irq_find_parent(device); if (p == NULL) return -EINVAL; /* Get size of interrupt specifier */ tmp = of_get_property(p, "#interrupt-cells", NULL); if (tmp == NULL) goto out; intsize = be32_to_cpu(*tmp); pr_debug(" intsize=%d intlen=%d\n", intsize, intlen); /* Check index */ if ((index + 1) * intsize > intlen) goto out; /* Get new specifier and map it */ res = of_irq_map_raw(p, intspec + index * intsize, intsize, addr, out_irq); out: of_node_put(p); return res; }
int of_irq_map_one(struct device_node *device, int index, struct of_irq *out_irq) { struct device_node *p; u32 *intspec, *tmp, intsize, intlen, *addr; int res; DBG("of_irq_map_one: dev=%s, index=%d\n", device->full_name, index); /* OldWorld mac stuff is "special", handle out of line */ if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC) return of_irq_map_oldworld(device, index, out_irq); /* Get the interrupts property */ intspec = (u32 *)get_property(device, "interrupts", &intlen); if (intspec == NULL) return -EINVAL; intlen /= sizeof(u32); /* Get the reg property (if any) */ addr = (u32 *)get_property(device, "reg", NULL); /* Look for the interrupt parent. */ p = of_irq_find_parent(device); if (p == NULL) return -EINVAL; /* Get size of interrupt specifier */ tmp = (u32 *)get_property(p, "#interrupt-cells", NULL); if (tmp == NULL) { of_node_put(p); return -EINVAL; } intsize = *tmp; DBG(" intsize=%d intlen=%d\n", intsize, intlen); /* Check index */ if ((index + 1) * intsize > intlen) return -EINVAL; /* Get new specifier and map it */ res = of_irq_map_raw(p, intspec + index * intsize, intsize, addr, out_irq); of_node_put(p); return res; }