+
+COMMAND_HANDLER(parport_handle_parport_toggling_time_command)
+{
+ if (argc == 1) {
+ uint32_t ns;
+ int retval = parse_u32(args[0], &ns);
+
+ if (ERROR_OK != retval)
+ return retval;
+
+ if (ns == 0) {
+ LOG_ERROR("0 ns is not a valid parport toggling time");
+ return ERROR_FAIL;
+ }
+
+ parport_toggling_time_ns = ns;
+ wait_states = jtag_get_speed();
+ }
+
+ command_print(cmd_ctx, "parport toggling time = %" PRIu32 " ns",
+ parport_toggling_time_ns);
+
+ return ERROR_OK;
+}
+
+static int parport_register_commands(struct command_context_s *cmd_ctx)
+{
+ register_command(cmd_ctx, NULL, "parport_port",
+ parport_handle_parport_port_command, COMMAND_CONFIG,
+ "either the address of the I/O port "
+ "or the number of the '/dev/parport' device");
+
+ register_command(cmd_ctx, NULL, "parport_cable",
+ parport_handle_parport_cable_command, COMMAND_CONFIG,
+ "the layout of the parallel port cable "
+ "used to connect to the target");
+
+ register_command(cmd_ctx, NULL, "parport_write_on_exit",
+ parport_handle_write_on_exit_command, COMMAND_CONFIG,
+ "configure the parallel driver to write "
+ "a known value to the parallel interface");
+
+ register_command(cmd_ctx, NULL, "parport_toggling_time",
+ parport_handle_parport_toggling_time_command, COMMAND_ANY,
+ "time <ns> it takes for the hardware to toggle TCK");
+
+ return ERROR_OK;
+}
+
+struct jtag_interface parport_interface = {
+ .name = "parport",
+ .register_commands = parport_register_commands,
+ .init = parport_init,
+ .quit = parport_quit,
+ .khz = parport_khz,
+ .speed_div = parport_speed_div,
+ .speed = parport_speed,
+ .execute_queue = bitbang_execute_queue,
+};