include/drm/drm_of.h

   1 #ifndef __DRM_OF_H__
   2 #define __DRM_OF_H__
   3
   4 #include <linux/of_graph.h>
   5
   6 struct component_master_ops;
   7 struct component_match;
   8 struct device;
   9 struct drm_device;
  10 struct drm_encoder;
  11 struct device_node;
  12
  13 #ifdef CONFIG_OF
  14 extern uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
  15                                            struct device_node *port);
  16 extern void drm_of_component_match_add(struct device *master,
  17                                        struct component_match **matchptr,
  18                                        int (*compare)(struct device *, void *),
  19                                        struct device_node *node);
  20 extern int drm_of_component_probe(struct device *dev,
  21                                   int (*compare_of)(struct device *, void *),
  22                                   const struct component_master_ops *m_ops);
  23 extern int drm_of_encoder_active_endpoint(struct device_node *node,
  24                                           struct drm_encoder *encoder,
  25                                           struct of_endpoint *endpoint);
  26 #else
  27 static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
  28                                                   struct device_node *port)
  29 {
  30         return 0;
  31 }
  32
  33 static inline void
  34 drm_of_component_match_add(struct device *master,
  35                            struct component_match **matchptr,
  36                            int (*compare)(struct device *, void *),
  37                            struct device_node *node)
  38 {
  39 }
  40
  41 static inline int
  42 drm_of_component_probe(struct device *dev,
  43                        int (*compare_of)(struct device *, void *),
  44                        const struct component_master_ops *m_ops)
  45 {
  46         return -EINVAL;
  47 }
  48
  49 static inline int drm_of_encoder_active_endpoint(struct device_node *node,
  50                                                  struct drm_encoder *encoder,
  51                                                  struct of_endpoint *endpoint)
  52 {
  53         return -EINVAL;
  54 }
  55 #endif
  56
  57 static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
  58                                                     struct drm_encoder *encoder)
  59 {
  60         struct of_endpoint endpoint;
  61         int ret = drm_of_encoder_active_endpoint(node, encoder,
  62                                                  &endpoint);
  63
  64         return ret ?: endpoint.id;
  65 }
  66
  67 static inline int drm_of_encoder_active_port_id(struct device_node *node,
  68                                                 struct drm_encoder *encoder)
  69 {
  70         struct of_endpoint endpoint;
  71         int ret = drm_of_encoder_active_endpoint(node, encoder,
  72                                                  &endpoint);
  73
  74         return ret ?: endpoint.port;
  75 }
  76
  77 #endif /* __DRM_OF_H__ */