include/linux/of_pci.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __OF_PCI_H
   3 #define __OF_PCI_H
   4
   5 #include <linux/pci.h>
   6 #include <linux/msi.h>
   7
   8 struct pci_dev;
   9 struct of_phandle_args;
  10 struct device_node;
  11
  12 #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_PCI)
  13 struct device_node *of_pci_find_child_device(struct device_node *parent,
  14                                              unsigned int devfn);
  15 int of_pci_get_devfn(struct device_node *np);
  16 void of_pci_check_probe_only(void);
  17 int of_pci_map_rid(struct device_node *np, u32 rid,
  18                    const char *map_name, const char *map_mask_name,
  19                    struct device_node **target, u32 *id_out);
  20 #else
  21 static inline struct device_node *of_pci_find_child_device(struct device_node *parent,
  22                                              unsigned int devfn)
  23 {
  24         return NULL;
  25 }
  26
  27 static inline int of_pci_get_devfn(struct device_node *np)
  28 {
  29         return -EINVAL;
  30 }
  31
  32 static inline int of_pci_map_rid(struct device_node *np, u32 rid,
  33                         const char *map_name, const char *map_mask_name,
  34                         struct device_node **target, u32 *id_out)
  35 {
  36         return -EINVAL;
  37 }
  38
  39 static inline void of_pci_check_probe_only(void) { }
  40 #endif
  41
  42 #if IS_ENABLED(CONFIG_OF_IRQ)
  43 int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
  44 #else
  45 static inline int
  46 of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin)
  47 {
  48         return 0;
  49 }
  50 #endif
  51
  52 #endif