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 drm_panel;
  12 struct drm_bridge;
  13 struct device_node;
  14
  15 #ifdef CONFIG_OF
  16 uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
  17                                     struct device_node *port);
  18 void drm_of_component_match_add(struct device *master,
  19                                 struct component_match **matchptr,
  20                                 int (*compare)(struct device *, void *),
  21                                 struct device_node *node);
  22 int drm_of_component_probe(struct device *dev,
  23                            int (*compare_of)(struct device *, void *),
  24                            const struct component_master_ops *m_ops);
  25 int drm_of_encoder_active_endpoint(struct device_node *node,
  26                                    struct drm_encoder *encoder,
  27                                    struct of_endpoint *endpoint);
  28 int drm_of_find_panel_or_bridge(const struct device_node *np,
  29                                 int port, int endpoint,
  30                                 struct drm_panel **panel,
  31                                 struct drm_bridge **bridge);
  32 #else
  33 static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
  34                                                   struct device_node *port)
  35 {
  36         return 0;
  37 }
  38
  39 static inline void
  40 drm_of_component_match_add(struct device *master,
  41                            struct component_match **matchptr,
  42                            int (*compare)(struct device *, void *),
  43                            struct device_node *node)
  44 {
  45 }
  46
  47 static inline int
  48 drm_of_component_probe(struct device *dev,
  49                        int (*compare_of)(struct device *, void *),
  50                        const struct component_master_ops *m_ops)
  51 {
  52         return -EINVAL;
  53 }
  54
  55 static inline int drm_of_encoder_active_endpoint(struct device_node *node,
  56                                                  struct drm_encoder *encoder,
  57                                                  struct of_endpoint *endpoint)
  58 {
  59         return -EINVAL;
  60 }
  61 static inline int drm_of_find_panel_or_bridge(const struct device_node *np,
  62                                               int port, int endpoint,
  63                                               struct drm_panel **panel,
  64                                               struct drm_bridge **bridge)
  65 {
  66         return -EINVAL;
  67 }
  68 #endif
  69
  70 static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
  71                                                     struct drm_encoder *encoder)
  72 {
  73         struct of_endpoint endpoint;
  74         int ret = drm_of_encoder_active_endpoint(node, encoder,
  75                                                  &endpoint);
  76
  77         return ret ?: endpoint.id;
  78 }
  79
  80 static inline int drm_of_encoder_active_port_id(struct device_node *node,
  81                                                 struct drm_encoder *encoder)
  82 {
  83         struct of_endpoint endpoint;
  84         int ret = drm_of_encoder_active_endpoint(node, encoder,
  85                                                  &endpoint);
  86
  87         return ret ?: endpoint.port;
  88 }
  89
  90 #endif /* __DRM_OF_H__ */