8b5f7a6246
Function is useful when drm_of_find_possible_crtcs() can't be used and custom parsing is needed. This can happen for example when there is a node with multiple muxes between crtc and encoder. Reviewed-by: Sean Paul <seanpaul@chromium.org> Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net> [maxime: change the function to have a consistent prefix] Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180625120304.7543-22-jernej.skrabec@siol.net
130 lines
3.4 KiB
C
130 lines
3.4 KiB
C
/* 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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#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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#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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#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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