mirror of
https://github.com/edk2-porting/linux-next.git
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4cacf91fcb
This patch adds a helper to parse the encoder endpoint connected to the encoder's crtc and two helpers to return its id and port id. This can be used to determine input mux setting from endpoint or port ids. Suggested-by: Daniel Kurtz <djkurtz@chromium.org> Reviewed-by: Daniel Kurtz <djkurtz@chromium.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
#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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struct component_master_ops;
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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 device_node;
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#ifdef CONFIG_OF
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extern uint32_t drm_of_find_possible_crtcs(struct drm_device *dev,
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struct device_node *port);
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extern 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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extern 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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#else
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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 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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#endif
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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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