projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| 7e435aad RK |
2 | #ifndef __DRM_OF_H__ |
| 3 | #define __DRM_OF_H__ | |
| 4 | ||
| 4cacf91f | 5 | #include <linux/of_graph.h> |
| 512721a1 ML |
6 | #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE) |
| 7 | #include <drm/drm_bridge.h> | |
| 8 | #endif | |
| 4cacf91f | 9 | |
| df785aa8 | 10 | struct component_master_ops; |
| 97ac0e47 | 11 | struct component_match; |
| df785aa8 | 12 | struct device; |
| 7e435aad | 13 | struct drm_device; |
| 4cacf91f | 14 | struct drm_encoder; |
| 1f2db303 RH |
15 | struct drm_panel; |
| 16 | struct drm_bridge; | |
| 7e435aad RK |
17 | struct device_node; |
| 18 | ||
| 19 | #ifdef CONFIG_OF | |
| 91faa047 DV |
20 | uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, |
| 21 | struct device_node *port); | |
| 22 | void drm_of_component_match_add(struct device *master, | |
| 23 | struct component_match **matchptr, | |
| 24 | int (*compare)(struct device *, void *), | |
| 25 | struct device_node *node); | |
| 26 | int drm_of_component_probe(struct device *dev, | |
| 27 | int (*compare_of)(struct device *, void *), | |
| 28 | const struct component_master_ops *m_ops); | |
| 29 | int drm_of_encoder_active_endpoint(struct device_node *node, | |
| 30 | struct drm_encoder *encoder, | |
| 31 | struct of_endpoint *endpoint); | |
| 1f2db303 RH |
32 | int drm_of_find_panel_or_bridge(const struct device_node *np, |
| 33 | int port, int endpoint, | |
| 34 | struct drm_panel **panel, | |
| 35 | struct drm_bridge **bridge); | |
| 7e435aad RK |
36 | #else |
| 37 | static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, | |
| 38 | struct device_node *port) | |
| 39 | { | |
| 40 | return 0; | |
| 41 | } | |
| df785aa8 | 42 | |
| 329f4c81 AB |
43 | static inline void |
| 44 | drm_of_component_match_add(struct device *master, | |
| 45 | struct component_match **matchptr, | |
| 46 | int (*compare)(struct device *, void *), | |
| 47 | struct device_node *node) | |
| 97ac0e47 RK |
48 | { |
| 49 | } | |
| 50 | ||
| df785aa8 LD |
51 | static inline int |
| 52 | drm_of_component_probe(struct device *dev, | |
| 53 | int (*compare_of)(struct device *, void *), | |
| 54 | const struct component_master_ops *m_ops) | |
| 55 | { | |
| 56 | return -EINVAL; | |
| 57 | } | |
| 4cacf91f PZ |
58 | |
| 59 | static inline int drm_of_encoder_active_endpoint(struct device_node *node, | |
| 60 | struct drm_encoder *encoder, | |
| 61 | struct of_endpoint *endpoint) | |
| 62 | { | |
| 63 | return -EINVAL; | |
| 64 | } | |
| 1f2db303 RH |
65 | static inline int drm_of_find_panel_or_bridge(const struct device_node *np, |
| 66 | int port, int endpoint, | |
| 67 | struct drm_panel **panel, | |
| 68 | struct drm_bridge **bridge) | |
| 69 | { | |
| 70 | return -EINVAL; | |
| 71 | } | |
| 7e435aad RK |
72 | #endif |
| 73 | ||
| 512721a1 ML |
74 | /* |
| 75 | * drm_of_panel_bridge_remove - remove panel bridge | |
| 76 | * @np: device tree node containing panel bridge output ports | |
| 77 | * | |
| 78 | * Remove the panel bridge of a given DT node's port and endpoint number | |
| 79 | * | |
| 80 | * Returns zero if successful, or one of the standard error codes if it fails. | |
| 81 | */ | |
| c70087e8 | 82 | static inline int drm_of_panel_bridge_remove(const struct device_node *np, |
| 83 | int port, int endpoint) | |
| 84 | { | |
| 512721a1 ML |
85 | #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE) |
| 86 | struct drm_bridge *bridge; | |
| 87 | struct device_node *remote; | |
| 88 | ||
| 89 | remote = of_graph_get_remote_node(np, port, endpoint); | |
| 90 | if (!remote) | |
| 91 | return -ENODEV; | |
| 92 | ||
| 93 | bridge = of_drm_find_bridge(remote); | |
| 94 | drm_panel_bridge_remove(bridge); | |
| 95 | ||
| 96 | return 0; | |
| 97 | #else | |
| c70087e8 | 98 | return -EINVAL; |
| 7e435aad | 99 | #endif |
| 512721a1 | 100 | } |
| 7e435aad | 101 | |
| 4cacf91f PZ |
102 | static inline int drm_of_encoder_active_endpoint_id(struct device_node *node, |
| 103 | struct drm_encoder *encoder) | |
| 104 | { | |
| 105 | struct of_endpoint endpoint; | |
| 106 | int ret = drm_of_encoder_active_endpoint(node, encoder, | |
| 107 | &endpoint); | |
| 108 | ||
| 109 | return ret ?: endpoint.id; | |
| 110 | } | |
| 111 | ||
| 112 | static inline int drm_of_encoder_active_port_id(struct device_node *node, | |
| 113 | struct drm_encoder *encoder) | |
| 114 | { | |
| 115 | struct of_endpoint endpoint; | |
| 116 | int ret = drm_of_encoder_active_endpoint(node, encoder, | |
| 117 | &endpoint); | |
| 118 | ||
| 119 | return ret ?: endpoint.port; | |
| 120 | } | |
| 121 | ||
| 7e435aad | 122 | #endif /* __DRM_OF_H__ */ |