u-boot/common/cros_ec.c
Vadim Bendebury 41364f0fbe cros_ec: Move EC interface into common library
Add a common library for obtaining access to the Chrome OS EC. This is
used by boards which need to talk to the EC.

Reviewed-by: Vadim Bendebury <vbendeb@google.com>
Tested-by: Vadim Bendebury <vbendeb@google.com>
Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-03-17 20:05:46 -06:00

44 lines
1 KiB
C

/*
* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*
* Alternatively, this software may be distributed under the terms of the
* GNU General Public License ("GPL") version 2 as published by the Free
* Software Foundation.
*/
#include <common.h>
#include <cros_ec.h>
DECLARE_GLOBAL_DATA_PTR;
struct local_info {
struct cros_ec_dev *cros_ec_dev; /* Pointer to cros_ec device */
int cros_ec_err; /* Error for cros_ec, 0 if ok */
};
static struct local_info local;
struct cros_ec_dev *board_get_cros_ec_dev(void)
{
return local.cros_ec_dev;
}
static int board_init_cros_ec_devices(const void *blob)
{
local.cros_ec_err = cros_ec_init(blob, &local.cros_ec_dev);
if (local.cros_ec_err)
return -1; /* Will report in board_late_init() */
return 0;
}
int cros_ec_board_init(void)
{
return board_init_cros_ec_devices(gd->fdt_blob);
}
int cros_ec_get_error(void)
{
return local.cros_ec_err;
}