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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 | /* SPDX-License-Identifier: GPL-2.0 */ #ifndef __DRM_OF_H__ #define __DRM_OF_H__ #include <linux/of_graph.h> #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE) #include <drm/drm_bridge.h> #endif struct component_master_ops; struct component_match; struct device; struct drm_device; struct drm_encoder; struct drm_panel; struct drm_bridge; struct device_node; /** * enum drm_lvds_dual_link_pixels - Pixel order of an LVDS dual-link connection * @DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS: Even pixels are expected to be generated * from the first port, odd pixels from the second port * @DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS: Odd pixels are expected to be generated * from the first port, even pixels from the second port */ enum drm_lvds_dual_link_pixels { DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS = 0, DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS = 1, }; #ifdef CONFIG_OF uint32_t drm_of_crtc_port_mask(struct drm_device *dev, struct device_node *port); uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, struct device_node *port); void drm_of_component_match_add(struct device *master, struct component_match **matchptr, int (*compare)(struct device *, void *), struct device_node *node); int drm_of_component_probe(struct device *dev, int (*compare_of)(struct device *, void *), const struct component_master_ops *m_ops); int drm_of_encoder_active_endpoint(struct device_node *node, struct drm_encoder *encoder, struct of_endpoint *endpoint); int drm_of_find_panel_or_bridge(const struct device_node *np, int port, int endpoint, struct drm_panel **panel, struct drm_bridge **bridge); int drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1, const struct device_node *port2); #else static inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev, struct device_node *port) { return 0; } static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, struct device_node *port) { return 0; } static inline void drm_of_component_match_add(struct device *master, struct component_match **matchptr, int (*compare)(struct device *, void *), struct device_node *node) { } static inline int drm_of_component_probe(struct device *dev, int (*compare_of)(struct device *, void *), const struct component_master_ops *m_ops) { return -EINVAL; } static inline int drm_of_encoder_active_endpoint(struct device_node *node, struct drm_encoder *encoder, struct of_endpoint *endpoint) { return -EINVAL; } static inline int drm_of_find_panel_or_bridge(const struct device_node *np, int port, int endpoint, struct drm_panel **panel, struct drm_bridge **bridge) { return -EINVAL; } static inline int drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1, const struct device_node *port2) { return -EINVAL; } #endif /* * drm_of_panel_bridge_remove - remove panel bridge * @np: device tree node containing panel bridge output ports * * Remove the panel bridge of a given DT node's port and endpoint number * * Returns zero if successful, or one of the standard error codes if it fails. */ static inline int drm_of_panel_bridge_remove(const struct device_node *np, int port, int endpoint) { #if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE) struct drm_bridge *bridge; struct device_node *remote; remote = of_graph_get_remote_node(np, port, endpoint); if (!remote) return -ENODEV; bridge = of_drm_find_bridge(remote); drm_panel_bridge_remove(bridge); return 0; #else return -EINVAL; #endif } static inline int drm_of_encoder_active_endpoint_id(struct device_node *node, struct drm_encoder *encoder) { struct of_endpoint endpoint; int ret = drm_of_encoder_active_endpoint(node, encoder, &endpoint); return ret ?: endpoint.id; } static inline int drm_of_encoder_active_port_id(struct device_node *node, struct drm_encoder *encoder) { struct of_endpoint endpoint; int ret = drm_of_encoder_active_endpoint(node, encoder, &endpoint); return ret ?: endpoint.port; } #endif /* __DRM_OF_H__ */ |