// SPDX-License-Identifier: GPL-2.0+

  /*
   * cmd_sdp.c -- sdp command
   *
   * Copyright (C) 2016 Toradex
   * Author: Stefan Agner <stefan.agner@toradex.com>

   */
  
  #include <common.h>
  #include <g_dnl.h>
  #include <sdp.h>
  #include <usb.h>
  
  static int do_sdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  {

  	int ret;

  
  	if (argc < 2)
  		return CMD_RET_USAGE;
  
  	char *usb_controller = argv[1];
  	int controller_index = simple_strtoul(usb_controller, NULL, 0);

  	usb_gadget_initialize(controller_index);

  
  	g_dnl_clear_detach();

  	ret = g_dnl_register("usb_dnl_sdp");
  	if (ret) {
  		pr_err("SDP dnl register failed: %d
  ", ret);
  		goto exit_register;
  	}

  
  	ret = sdp_init(controller_index);
  	if (ret) {

  		pr_err("SDP init failed: %d
  ", ret);

  		goto exit;
  	}
  
  	/* This command typically does not return but jumps to an image */
  	sdp_handle(controller_index);

  	pr_err("SDP ended
  ");

  
  exit:
  	g_dnl_unregister();

  exit_register:

  	usb_gadget_release(controller_index);

  	return CMD_RET_FAILURE;

  }
  
  U_BOOT_CMD(sdp, 2, 1, do_sdp,
  	"Serial Downloader Protocol",
  	"<USB_controller>
  "
  	"  - serial downloader protocol via <USB_controller>
  "
  );