| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef __OF_IRQ_H |
| #define __OF_IRQ_H |
| |
| #include <linux/types.h> |
| #include <linux/errno.h> |
| #include <linux/irq.h> |
| #include <linux/irqdomain.h> |
| #include <linux/ioport.h> |
| #include <linux/of.h> |
| |
| typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *); |
| |
| /* |
| * Workarounds only applied to 32bit powermac machines |
| */ |
| #define OF_IMAP_OLDWORLD_MAC 0x00000001 |
| #define OF_IMAP_NO_PHANDLE 0x00000002 |
| |
| #if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC) |
| extern unsigned int of_irq_workarounds; |
| extern struct device_node *of_irq_dflt_pic; |
| extern int of_irq_parse_oldworld(struct device_node *device, int index, |
| struct of_phandle_args *out_irq); |
| #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
| #define of_irq_workarounds (0) |
| #define of_irq_dflt_pic (NULL) |
| static inline int of_irq_parse_oldworld(struct device_node *device, int index, |
| struct of_phandle_args *out_irq) |
| { |
| return -EINVAL; |
| } |
| #endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */ |
| |
| extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq); |
| extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data); |
| extern int of_irq_to_resource(struct device_node *dev, int index, |
| struct resource *r); |
| |
| extern void of_irq_init(const struct of_device_id *matches); |
| |
| #ifdef CONFIG_OF_IRQ |
| extern int of_irq_parse_one(struct device_node *device, int index, |
| struct of_phandle_args *out_irq); |
| extern int of_irq_count(struct device_node *dev); |
| extern int of_irq_get(struct device_node *dev, int index); |
| extern int of_irq_get_byname(struct device_node *dev, const char *name); |
| extern int of_irq_to_resource_table(struct device_node *dev, |
| struct resource *res, int nr_irqs); |
| extern struct device_node *of_irq_find_parent(struct device_node *child); |
| extern struct irq_domain *of_msi_get_domain(struct device *dev, |
| struct device_node *np, |
| enum irq_domain_bus_token token); |
| extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, |
| u32 id, |
| u32 bus_token); |
| extern void of_msi_configure(struct device *dev, struct device_node *np); |
| u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); |
| #else |
| static inline int of_irq_parse_one(struct device_node *device, int index, |
| struct of_phandle_args *out_irq) |
| { |
| return -EINVAL; |
| } |
| static inline int of_irq_count(struct device_node *dev) |
| { |
| return 0; |
| } |
| static inline int of_irq_get(struct device_node *dev, int index) |
| { |
| return 0; |
| } |
| static inline int of_irq_get_byname(struct device_node *dev, const char *name) |
| { |
| return 0; |
| } |
| static inline int of_irq_to_resource_table(struct device_node *dev, |
| struct resource *res, int nr_irqs) |
| { |
| return 0; |
| } |
| static inline void *of_irq_find_parent(struct device_node *child) |
| { |
| return NULL; |
| } |
| |
| static inline struct irq_domain *of_msi_get_domain(struct device *dev, |
| struct device_node *np, |
| enum irq_domain_bus_token token) |
| { |
| return NULL; |
| } |
| static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev, |
| u32 id, u32 bus_token) |
| { |
| return NULL; |
| } |
| static inline void of_msi_configure(struct device *dev, struct device_node *np) |
| { |
| } |
| static inline u32 of_msi_map_id(struct device *dev, |
| struct device_node *msi_np, u32 id_in) |
| { |
| return id_in; |
| } |
| #endif |
| |
| #if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC) |
| /* |
| * irq_of_parse_and_map() is used by 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); |
| |
| #else /* !CONFIG_OF && !CONFIG_SPARC */ |
| static inline unsigned int irq_of_parse_and_map(struct device_node *dev, |
| int index) |
| { |
| return 0; |
| } |
| #endif /* !CONFIG_OF */ |
| |
| #endif /* __OF_IRQ_H */ |