104 lines
2.7 KiB
C
104 lines
2.7 KiB
C
/*
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* This an unstable interface of wlroots. No guarantees are made regarding the
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* future consistency of this API.
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*/
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#ifndef WLR_USE_UNSTABLE
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#error "Add -DWLR_USE_UNSTABLE to enable unstable wlroots features"
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#endif
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#ifndef WLR_BACKEND_DRM_H
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#define WLR_BACKEND_DRM_H
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#include <wayland-server-core.h>
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#include <wlr/backend.h>
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#include <wlr/backend/session.h>
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#include <wlr/types/wlr_output.h>
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struct wlr_drm_backend;
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typedef struct _drmModeModeInfo drmModeModeInfo;
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struct wlr_drm_lease {
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int fd;
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uint32_t lessee_id;
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struct wlr_drm_backend *backend;
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struct {
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struct wl_signal destroy;
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} events;
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void *data;
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};
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/**
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* Creates a DRM backend using the specified GPU file descriptor (typically from
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* a device node in /dev/dri).
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*
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* To slave this to another DRM backend, pass it as the parent (which _must_ be
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* a DRM backend, other kinds of backends raise SIGABRT).
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*/
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struct wlr_backend *wlr_drm_backend_create(struct wlr_session *session,
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struct wlr_device *dev, struct wlr_backend *parent);
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bool wlr_backend_is_drm(struct wlr_backend *backend);
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bool wlr_output_is_drm(struct wlr_output *output);
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/**
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* Get the parent DRM backend, if any.
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*/
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struct wlr_backend *wlr_drm_backend_get_parent(struct wlr_backend *backend);
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/**
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* Get the KMS connector object ID.
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*/
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uint32_t wlr_drm_connector_get_id(struct wlr_output *output);
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/**
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* Tries to open non-master DRM FD. The compositor must not call drmSetMaster()
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* on the returned FD.
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*
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* Returns a valid opened DRM FD, or -1 on error.
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*/
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int wlr_drm_backend_get_non_master_fd(struct wlr_backend *backend);
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/**
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* Leases the given outputs to the caller. The outputs must be from the
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* associated DRM backend.
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*
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* Returns NULL on error.
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*/
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struct wlr_drm_lease *wlr_drm_create_lease(struct wlr_output **outputs,
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size_t n_outputs, int *lease_fd);
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/**
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* Terminates and destroys a given lease.
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*
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* The outputs will be owned again by the backend.
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*/
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void wlr_drm_lease_terminate(struct wlr_drm_lease *lease);
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/**
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* Add mode to the list of available modes.
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*/
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struct wlr_output_mode *wlr_drm_connector_add_mode(struct wlr_output *output,
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const drmModeModeInfo *mode);
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/**
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* Get the raw DRM mode information from a struct wlr_output_mode.
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*
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* The mode passed in must belong to a DRM output.
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*/
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const drmModeModeInfo *wlr_drm_mode_get_info(struct wlr_output_mode *mode);
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/**
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* Get the connector's panel orientation.
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*
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* On some devices the panel is mounted in the casing in such a way that the
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* top side of the panel does not match with the top side of the device. This
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* function returns the output transform which needs to be applied to compensate
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* for this.
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*/
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enum wl_output_transform wlr_drm_connector_get_panel_orientation(
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struct wlr_output *output);
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#endif
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