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