common/cros_ec.c

   1 /*
   2  * Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
   3  * Use of this source code is governed by a BSD-style license that can be
   4  * found in the LICENSE file.
   5  *
   6  * Alternatively, this software may be distributed under the terms of the
   7  * GNU General Public License ("GPL") version 2 as published by the Free
   8  * Software Foundation.
   9  */
  10
  11 #include <common.h>
  12 #include <cros_ec.h>
  13 DECLARE_GLOBAL_DATA_PTR;
  14
  15 struct local_info {
  16         struct cros_ec_dev *cros_ec_dev;        /* Pointer to cros_ec device */
  17         int cros_ec_err;                        /* Error for cros_ec, 0 if ok */
  18 };
  19
  20 static struct local_info local;
  21
  22 struct cros_ec_dev *board_get_cros_ec_dev(void)
  23 {
  24         return local.cros_ec_dev;
  25 }
  26
  27 static int board_init_cros_ec_devices(const void *blob)
  28 {
  29         local.cros_ec_err = cros_ec_init(blob, &local.cros_ec_dev);
  30         if (local.cros_ec_err)
  31                 return -1;  /* Will report in board_late_init() */
  32
  33         return 0;
  34 }
  35
  36 int cros_ec_board_init(void)
  37 {
  38         return board_init_cros_ec_devices(gd->fdt_blob);
  39 }
  40
  41 int cros_ec_get_error(void)
  42 {
  43         return local.cros_ec_err;
  44 }