1 files changed, 71 insertions, 0 deletions
diff --git a/backend/drm/backend.c b/backend/drm/backend.c
new file mode 100644
index 00000000..8c500190
--- /dev/null
+++ b/backend/drm/backend.c
@@ -0,0 +1,71 @@
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "backend/drm/backend.h"
+#include "backend/drm/drm.h"
+#include "backend/drm/event.h"
+#include "backend/drm/session.h"
+#include "backend/drm/udev.h"
+
+struct wlr_drm_backend *wlr_drm_backend_init(void)
+{
+	struct wlr_drm_backend *backend = calloc(1, sizeof *backend);
+	if (!backend)
+		return NULL;
+
+	if (!wlr_session_start(&backend->session)) {
+		fprintf(stderr, "Could not create session\n");
+		goto error;
+	}
+
+	if (!wlr_udev_init(&backend->udev)) {
+		fprintf(stderr, "Could not start udev\n");
+		goto error_session;
+	}
+
+	backend->fd = wlr_udev_find_gpu(&backend->udev, &backend->session);
+	if (backend->fd == -1) {
+		fprintf(stderr, "Could not open GPU\n");
+		goto error_udev;
+	}
+
+	if (!wlr_drm_renderer_init(&backend->renderer, backend, backend->fd)) {
+		fprintf(stderr, "Could not initalise renderer\n");
+		goto error_fd;
+	}
+
+	wlr_drm_scan_connectors(backend);
+
+	return backend;
+
+error_fd:
+	wlr_session_release_device(&backend->session, backend->fd);
+error_udev:
+	wlr_udev_free(&backend->udev);
+error_session:
+	wlr_session_end(&backend->session);
+error:
+	free(backend);
+	return NULL;
+}
+
+void wlr_drm_backend_free(struct wlr_drm_backend *backend)
+{
+	if (!backend)
+		return;
+
+	for (size_t i = 0; i < backend->display_len; ++i) {
+		wlr_drm_display_free(&backend->displays[i]);
+	}
+
+	wlr_drm_renderer_free(&backend->renderer);
+	wlr_udev_free(&backend->udev);
+	wlr_session_release_device(&backend->session, backend->fd);
+	wlr_session_end(&backend->session);
+
+	free(backend->events);
+	free(backend->displays);
+	free(backend);
+}
+