include/drm/drm_of.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __DRM_OF_H__
   3 #define __DRM_OF_H__
   4
   5 #include <linux/of_graph.h>
   6
   7 struct component_master_ops;
   8 struct component_match;
   9 struct device;
  10 struct drm_device;
  11 struct drm_encoder;
  12 struct drm_panel;
  13 struct drm_bridge;
  14 struct device_node;
  15
  16 #ifdef CONFIG_OF
  17 uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
  18                                     struct device_node *port);
  19 void drm_of_component_match_add(struct device *master,
  20                                 struct component_match **matchptr,
  21                                 int (*compare)(struct device *, void *),
  22                                 struct device_node *node);
  23 int drm_of_component_probe(struct device *dev,
  24                            int (*compare_of)(struct device *, void *),
  25                            const struct component_master_ops *m_ops);
  26 int drm_of_encoder_active_endpoint(struct device_node *node,
  27                                    struct drm_encoder *encoder,
  28                                    struct of_endpoint *endpoint);
  29 int drm_of_find_panel_or_bridge(const struct device_node *np,
  30                                 int port, int endpoint,
  31                                 struct drm_panel **panel,
  32                                 struct drm_bridge **bridge);
  33 #else
  34 static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
  35                                                   struct device_node *port)
  36 {
  37         return 0;
  38 }
  39
  40 static inline void
  41 drm_of_component_match_add(struct device *master,
  42                            struct component_match **matchptr,
  43                            int (*compare)(struct device *, void *),
  44                            struct device_node *node)
  45 {
  46 }
  47
  48 static inline int
  49 drm_of_component_probe(struct device *dev,
  50                        int (*compare_of)(struct device *, void *),
  51                        const struct component_master_ops *m_ops)
  52 {
  53         return -EINVAL;
  54 }
  55
  56 static inline int drm_of_encoder_active_endpoint(struct device_node *node,
  57                                                  struct drm_encoder *encoder,
  58                                                  struct of_endpoint *endpoint)
  59 {
  60         return -EINVAL;
  61 }
  62 static inline int drm_of_find_panel_or_bridge(const struct device_node *np,
  63                                               int port, int endpoint,
  64                                               struct drm_panel **panel,
  65                                               struct drm_bridge **bridge)
  66 {
  67         return -EINVAL;
  68 }
  69 #endif
  70
  71 static inline int drm_of_encoder_active_endpoint_id(struct device_node *node,
  72                                                     struct drm_encoder *encoder)
  73 {
  74         struct of_endpoint endpoint;
  75         int ret = drm_of_encoder_active_endpoint(node, encoder,
  76                                                  &endpoint);
  77
  78         return ret ?: endpoint.id;
  79 }
  80
  81 static inline int drm_of_encoder_active_port_id(struct device_node *node,
  82                                                 struct drm_encoder *encoder)
  83 {
  84         struct of_endpoint endpoint;
  85         int ret = drm_of_encoder_active_endpoint(node, encoder,
  86                                                  &endpoint);
  87
  88         return ret ?: endpoint.port;
  89 }
  90
  91 #endif /* __DRM_OF_H__ */