Initial GXFP5130 userspace prototype

include/gxfp/fdt.h

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0-only
+#ifndef GXFP_FDT_H
+#define GXFP_FDT_H
+
+#include <stdbool.h>
+#include <stdint.h>
+
+struct gxfp_device;
+struct gxfp_frame_view;
+
+enum gxfp_fdt_event {
+	GXFP_FDT_EVENT_NONE = 0,
+	GXFP_FDT_EVENT_READY,
+	GXFP_FDT_EVENT_FINGER_DOWN,
+	GXFP_FDT_EVENT_FINGER_UP,
+	GXFP_FDT_EVENT_REVERSE,
+};
+
+struct gxfp_fdt {
+	bool waiting_for_up;
+};
+
+void gxfp_fdt_init(struct gxfp_fdt *fdt);
+int gxfp_fdt_arm_down(struct gxfp_device *device);
+int gxfp_fdt_arm_up(struct gxfp_device *device);
+
+enum gxfp_fdt_event
+gxfp_fdt_decode(const struct gxfp_frame_view *frame, uint16_t *status);
+
+int gxfp_fdt_handle_event(struct gxfp_fdt *fdt,
+			  struct gxfp_device *device,
+			  enum gxfp_fdt_event event);
+
+#endif