LXR linux/include/linux/of

   1#ifndef __OF_IRQ_H
   2#define __OF_IRQ_H
   3
   4#include <linux/types.h>
   5#include <linux/errno.h>
   6#include <linux/irq.h>
   7#include <linux/irqdomain.h>
   8#include <linux/ioport.h>
   9#include <linux/of.h>
  10
  11typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
  12
  13/*
  14 * Workarounds only applied to 32bit powermac machines
  15 */
  16#define OF_IMAP_OLDWORLD_MAC    0x00000001
  17#define OF_IMAP_NO_PHANDLE      0x00000002
  18
  19#if defined(CONFIG_PPC32) && defined(CONFIG_PPC_PMAC)
  20extern unsigned int of_irq_workarounds;
  21extern struct device_node *of_irq_dflt_pic;
  22extern int of_irq_parse_oldworld(struct device_node *device, int index,
  23                               struct of_phandle_args *out_irq);
  24#else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
  25#define of_irq_workarounds (0)
  26#define of_irq_dflt_pic (NULL)
  27static inline int of_irq_parse_oldworld(struct device_node *device, int index,
  28                                      struct of_phandle_args *out_irq)
  29{
  30        return -EINVAL;
  31}
  32#endif /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
  33
  34extern int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq);
  35extern int of_irq_parse_one(struct device_node *device, int index,
  36                          struct of_phandle_args *out_irq);
  37extern unsigned int irq_create_of_mapping(struct of_phandle_args *irq_data);
  38extern int of_irq_to_resource(struct device_node *dev, int index,
  39                              struct resource *r);
  40
  41extern void of_irq_init(const struct of_device_id *matches);
  42
  43#ifdef CONFIG_OF_IRQ
  44extern int of_irq_count(struct device_node *dev);
  45extern int of_irq_get(struct device_node *dev, int index);
  46extern int of_irq_get_byname(struct device_node *dev, const char *name);
  47extern int of_irq_to_resource_table(struct device_node *dev,
  48                struct resource *res, int nr_irqs);
  49extern struct device_node *of_irq_find_parent(struct device_node *child);
  50extern struct irq_domain *of_msi_get_domain(struct device *dev,
  51                                            struct device_node *np,
  52                                            enum irq_domain_bus_token token);
  53extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
  54                                                       u32 rid);
  55extern void of_msi_configure(struct device *dev, struct device_node *np);
  56u32 of_msi_map_rid(struct device *dev, struct device_node *msi_np, u32 rid_in);
  57#else
  58static inline int of_irq_count(struct device_node *dev)
  59{
  60        return 0;
  61}
  62static inline int of_irq_get(struct device_node *dev, int index)
  63{
  64        return 0;
  65}
  66static inline int of_irq_get_byname(struct device_node *dev, const char *name)
  67{
  68        return 0;
  69}
  70static inline int of_irq_to_resource_table(struct device_node *dev,
  71                                           struct resource *res, int nr_irqs)
  72{
  73        return 0;
  74}
  75static inline void *of_irq_find_parent(struct device_node *child)
  76{
  77        return NULL;
  78}
  79
  80static inline struct irq_domain *of_msi_get_domain(struct device *dev,
  81                                                   struct device_node *np,
  82                                                   enum irq_domain_bus_token token)
  83{
  84        return NULL;
  85}
  86static inline struct irq_domain *of_msi_map_get_device_domain(struct device *dev,
  87                                                              u32 rid)
  88{
  89        return NULL;
  90}
  91static inline void of_msi_configure(struct device *dev, struct device_node *np)
  92{
  93}
  94static inline u32 of_msi_map_rid(struct device *dev,
  95                                 struct device_node *msi_np, u32 rid_in)
  96{
  97        return rid_in;
  98}
  99#endif
 100
 101#if defined(CONFIG_OF_IRQ) || defined(CONFIG_SPARC)
 102/*
 103 * irq_of_parse_and_map() is used by all OF enabled platforms; but SPARC
 104 * implements it differently.  However, the prototype is the same for all,
 105 * so declare it here regardless of the CONFIG_OF_IRQ setting.
 106 */
 107extern unsigned int irq_of_parse_and_map(struct device_node *node, int index);
 108
 109#else /* !CONFIG_OF && !CONFIG_SPARC */
 110static inline unsigned int irq_of_parse_and_map(struct device_node *dev,
 111                                                int index)
 112{
 113        return 0;
 114}
 115#endif /* !CONFIG_OF */
 116
 117#endif /* __OF_IRQ_H */
 118