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#ifndef DRM_BACKEND_H
#define DRM_BACKEND_H
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <wayland-server.h>
#include <xf86drmMode.h>
#include <EGL/egl.h>
#include <libudev.h>
#include <gbm.h>
#include <wlr/backend/session.h>
#include <wlr/backend/drm.h>
#include <wlr/types/wlr_output.h>
#include <wlr/egl.h>
#include <wlr/util/list.h>
#include <backend/udev.h>
#include "drm-properties.h"
struct wlr_drm_plane {
uint32_t type;
uint32_t id;
uint32_t possible_crtcs;
uint32_t width, height;
struct gbm_surface *gbm;
EGLSurface egl;
struct gbm_bo *front;
struct gbm_bo *back;
// Only used by cursor
float matrix[16];
struct wlr_renderer *wlr_rend;
struct wlr_texture *wlr_tex;
struct gbm_bo *cursor_bo;
union wlr_drm_plane_props props;
};
struct wlr_drm_crtc {
uint32_t id;
uint32_t mode_id; // atomic modesetting only
drmModeAtomicReq *atomic;
union {
struct {
struct wlr_drm_plane *overlay;
struct wlr_drm_plane *primary;
struct wlr_drm_plane *cursor;
};
struct wlr_drm_plane *planes[3];
};
union wlr_drm_crtc_props props;
struct wl_list connectors;
};
struct wlr_drm_connector {
struct wlr_output *base;
uint32_t id;
struct wlr_drm_crtc *crtc;
union wlr_drm_connector_props props;
struct wl_list link;
};
struct wlr_drm_renderer {
int fd;
struct gbm_device *gbm;
struct wlr_egl egl;
};
bool wlr_drm_renderer_init(struct wlr_drm_renderer *renderer, int fd);
void wlr_drm_renderer_free(struct wlr_drm_renderer *renderer);
struct wlr_drm_interface;
struct wlr_drm_backend {
struct wlr_backend backend;
const struct wlr_drm_interface *iface;
int fd;
dev_t dev;
size_t num_crtcs;
struct wlr_drm_crtc *crtcs;
size_t num_planes;
struct wlr_drm_plane *planes;
union {
struct {
size_t num_overlay_planes;
size_t num_primary_planes;
size_t num_cursor_planes;
};
size_t num_type_planes[3];
};
union {
struct {
struct wlr_drm_plane *overlay_planes;
struct wlr_drm_plane *primary_planes;
struct wlr_drm_plane *cursor_planes;
};
struct wlr_drm_plane *type_planes[3];
};
struct wl_display *display;
struct wl_event_source *drm_event;
struct wl_listener session_signal;
struct wl_listener drm_invalidated;
uint32_t taken_crtcs;
list_t *outputs;
struct wlr_drm_renderer renderer;
struct wlr_session *session;
struct wlr_udev *udev;
};
enum wlr_drm_output_state {
WLR_DRM_OUTPUT_DISCONNECTED,
WLR_DRM_OUTPUT_NEEDS_MODESET,
WLR_DRM_OUTPUT_CONNECTED,
};
struct wlr_output_mode_state {
struct wlr_wl_output_mode *wlr_mode;
drmModeModeInfo mode;
};
struct wlr_drm_output {
struct wlr_output output;
enum wlr_drm_output_state state;
uint32_t connector;
struct wlr_drm_crtc *crtc;
uint32_t possible_crtc;
union wlr_drm_connector_props props;
uint32_t width;
uint32_t height;
drmModeCrtc *old_crtc;
struct wlr_drm_renderer *renderer;
bool pageflip_pending;
};
// Used to provide atomic or legacy DRM functions
struct wlr_drm_interface {
// Enable or disable DPMS for output
void (*conn_enable)(struct wlr_drm_backend *backend,
struct wlr_drm_output *output, bool enable);
// Pageflip on crtc. If mode is non-NULL perform a full modeset using it.
bool (*crtc_pageflip)(struct wlr_drm_backend *backend,
struct wlr_drm_output *output, struct wlr_drm_crtc *crtc,
uint32_t fb_id, drmModeModeInfo *mode);
// Enable the cursor buffer on crtc. Set bo to NULL to disable
bool (*crtc_set_cursor)(struct wlr_drm_backend *backend,
struct wlr_drm_crtc *crtc, struct gbm_bo *bo);
// Move the cursor on crtc
bool (*crtc_move_cursor)(struct wlr_drm_backend *backend,
struct wlr_drm_crtc *crtc, int x, int y);
};
bool wlr_drm_check_features(struct wlr_drm_backend *drm);
bool wlr_drm_resources_init(struct wlr_drm_backend *drm);
void wlr_drm_resources_free(struct wlr_drm_backend *drm);
void wlr_drm_output_cleanup(struct wlr_drm_output *output, bool restore);
void wlr_drm_scan_connectors(struct wlr_drm_backend *state);
int wlr_drm_event(int fd, uint32_t mask, void *data);
void wlr_drm_output_start_renderer(struct wlr_drm_output *output);
#endif
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