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151 lines
4.1 KiB
151 lines
4.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef __DRM_OF_H__ |
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#define __DRM_OF_H__ |
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#include <linux/of_graph.h> |
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#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE) |
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#include <drm/drm_bridge.h> |
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#endif |
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struct component_master_ops; |
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struct component_match; |
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struct device; |
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struct drm_device; |
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struct drm_encoder; |
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struct drm_panel; |
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struct drm_bridge; |
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struct device_node; |
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/** |
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* enum drm_lvds_dual_link_pixels - Pixel order of an LVDS dual-link connection |
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* @DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS: Even pixels are expected to be generated |
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* from the first port, odd pixels from the second port |
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* @DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS: Odd pixels are expected to be generated |
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* from the first port, even pixels from the second port |
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*/ |
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enum drm_lvds_dual_link_pixels { |
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DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS = 0, |
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DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS = 1, |
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}; |
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#ifdef CONFIG_OF |
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uint32_t drm_of_crtc_port_mask(struct drm_device *dev, |
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struct device_node *port); |
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uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, |
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struct device_node *port); |
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void drm_of_component_match_add(struct device *master, |
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struct component_match **matchptr, |
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int (*compare)(struct device *, void *), |
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struct device_node *node); |
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int drm_of_component_probe(struct device *dev, |
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int (*compare_of)(struct device *, void *), |
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const struct component_master_ops *m_ops); |
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int drm_of_encoder_active_endpoint(struct device_node *node, |
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struct drm_encoder *encoder, |
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struct of_endpoint *endpoint); |
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int drm_of_find_panel_or_bridge(const struct device_node *np, |
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int port, int endpoint, |
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struct drm_panel **panel, |
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struct drm_bridge **bridge); |
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int drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1, |
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const struct device_node *port2); |
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#else |
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static inline uint32_t drm_of_crtc_port_mask(struct drm_device *dev, |
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struct device_node *port) |
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{ |
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return 0; |
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} |
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static inline uint32_t drm_of_find_possible_crtcs(struct drm_device *dev, |
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struct device_node *port) |
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{ |
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return 0; |
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} |
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static inline void |
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drm_of_component_match_add(struct device *master, |
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struct component_match **matchptr, |
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int (*compare)(struct device *, void *), |
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struct device_node *node) |
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{ |
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} |
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static inline int |
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drm_of_component_probe(struct device *dev, |
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int (*compare_of)(struct device *, void *), |
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const struct component_master_ops *m_ops) |
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{ |
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return -EINVAL; |
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} |
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static inline int drm_of_encoder_active_endpoint(struct device_node *node, |
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struct drm_encoder *encoder, |
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struct of_endpoint *endpoint) |
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{ |
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return -EINVAL; |
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} |
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static inline int drm_of_find_panel_or_bridge(const struct device_node *np, |
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int port, int endpoint, |
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struct drm_panel **panel, |
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struct drm_bridge **bridge) |
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{ |
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return -EINVAL; |
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} |
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static inline int |
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drm_of_lvds_get_dual_link_pixel_order(const struct device_node *port1, |
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const struct device_node *port2) |
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{ |
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return -EINVAL; |
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} |
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#endif |
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/* |
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* drm_of_panel_bridge_remove - remove panel bridge |
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* @np: device tree node containing panel bridge output ports |
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* |
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* Remove the panel bridge of a given DT node's port and endpoint number |
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* |
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* Returns zero if successful, or one of the standard error codes if it fails. |
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*/ |
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static inline int drm_of_panel_bridge_remove(const struct device_node *np, |
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int port, int endpoint) |
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{ |
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#if IS_ENABLED(CONFIG_OF) && IS_ENABLED(CONFIG_DRM_PANEL_BRIDGE) |
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struct drm_bridge *bridge; |
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struct device_node *remote; |
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remote = of_graph_get_remote_node(np, port, endpoint); |
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if (!remote) |
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return -ENODEV; |
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bridge = of_drm_find_bridge(remote); |
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drm_panel_bridge_remove(bridge); |
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return 0; |
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#else |
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return -EINVAL; |
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#endif |
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} |
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static inline int drm_of_encoder_active_endpoint_id(struct device_node *node, |
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struct drm_encoder *encoder) |
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{ |
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struct of_endpoint endpoint; |
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int ret = drm_of_encoder_active_endpoint(node, encoder, |
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&endpoint); |
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return ret ?: endpoint.id; |
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} |
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static inline int drm_of_encoder_active_port_id(struct device_node *node, |
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struct drm_encoder *encoder) |
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{ |
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struct of_endpoint endpoint; |
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int ret = drm_of_encoder_active_endpoint(node, encoder, |
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&endpoint); |
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return ret ?: endpoint.port; |
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} |
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#endif /* __DRM_OF_H__ */
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