of_device.h 3.0 KB

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  1. #ifndef _LINUX_OF_DEVICE_H
  2. #define _LINUX_OF_DEVICE_H
  3. #include <linux/cpu.h>
  4. #include <linux/platform_device.h>
  5. #include <linux/of_platform.h> /* temporary until merge */
  6. #include <linux/of.h>
  7. #include <linux/mod_devicetable.h>
  8. struct device;
  9. #ifdef CONFIG_OF
  10. extern const struct of_device_id *of_match_device(
  11. const struct of_device_id *matches, const struct device *dev);
  12. /**
  13. * of_driver_match_device - Tell if a driver's of_match_table matches a device.
  14. * @drv: the device_driver structure to test
  15. * @dev: the device structure to match against
  16. */
  17. static inline int of_driver_match_device(struct device *dev,
  18. const struct device_driver *drv)
  19. {
  20. return of_match_device(drv->of_match_table, dev) != NULL;
  21. }
  22. extern struct platform_device *of_dev_get(struct platform_device *dev);
  23. extern void of_dev_put(struct platform_device *dev);
  24. extern int of_device_add(struct platform_device *pdev);
  25. extern int of_device_register(struct platform_device *ofdev);
  26. extern void of_device_unregister(struct platform_device *ofdev);
  27. extern const void *of_device_get_match_data(const struct device *dev);
  28. extern ssize_t of_device_get_modalias(struct device *dev,
  29. char *str, ssize_t len);
  30. extern int of_device_request_module(struct device *dev);
  31. extern void of_device_uevent(struct device *dev, struct kobj_uevent_env *env);
  32. extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
  33. static inline void of_device_node_put(struct device *dev)
  34. {
  35. of_node_put(dev->of_node);
  36. }
  37. static inline struct device_node *of_cpu_device_node_get(int cpu)
  38. {
  39. struct device *cpu_dev;
  40. cpu_dev = get_cpu_device(cpu);
  41. if (!cpu_dev)
  42. return NULL;
  43. return of_node_get(cpu_dev->of_node);
  44. }
  45. int of_dma_configure(struct device *dev, struct device_node *np);
  46. void of_dma_deconfigure(struct device *dev);
  47. #else /* CONFIG_OF */
  48. static inline int of_driver_match_device(struct device *dev,
  49. const struct device_driver *drv)
  50. {
  51. return 0;
  52. }
  53. static inline void of_device_uevent(struct device *dev,
  54. struct kobj_uevent_env *env) { }
  55. static inline const void *of_device_get_match_data(const struct device *dev)
  56. {
  57. return NULL;
  58. }
  59. static inline int of_device_get_modalias(struct device *dev,
  60. char *str, ssize_t len)
  61. {
  62. return -ENODEV;
  63. }
  64. static inline int of_device_request_module(struct device *dev)
  65. {
  66. return -ENODEV;
  67. }
  68. static inline int of_device_uevent_modalias(struct device *dev,
  69. struct kobj_uevent_env *env)
  70. {
  71. return -ENODEV;
  72. }
  73. static inline void of_device_node_put(struct device *dev) { }
  74. static inline const struct of_device_id *__of_match_device(
  75. const struct of_device_id *matches, const struct device *dev)
  76. {
  77. return NULL;
  78. }
  79. #define of_match_device(matches, dev) \
  80. __of_match_device(of_match_ptr(matches), (dev))
  81. static inline struct device_node *of_cpu_device_node_get(int cpu)
  82. {
  83. return NULL;
  84. }
  85. static inline int of_dma_configure(struct device *dev, struct device_node *np)
  86. {
  87. return 0;
  88. }
  89. static inline void of_dma_deconfigure(struct device *dev)
  90. {}
  91. #endif /* CONFIG_OF */
  92. #endif /* _LINUX_OF_DEVICE_H */