u-boot/common/cros_ec.c
Simon Glass e564f054af dm: core: Add dev_get_uclass_priv() to access uclass private data
Add a convenience function to access the private data that a uclass stores
for each of its devices. Convert over most existing uses for consistency
and to provide an example for others.

Signed-off-by: Simon Glass <sjg@chromium.org>
2015-04-16 19:27:42 -06:00

74 lines
1.5 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>
#include <dm.h>
#include <errno.h>
DECLARE_GLOBAL_DATA_PTR;
#ifndef CONFIG_DM_CROS_EC
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;
#endif
struct cros_ec_dev *board_get_cros_ec_dev(void)
{
#ifdef CONFIG_DM_CROS_EC
struct udevice *dev;
int ret;
ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
if (ret) {
debug("%s: Error %d\n", __func__, ret);
return NULL;
}
return dev_get_uclass_priv(dev);
#else
return local.cros_ec_dev;
#endif
}
static int board_init_cros_ec_devices(const void *blob)
{
#ifndef CONFIG_DM_CROS_EC
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() */
#endif
return 0;
}
int cros_ec_board_init(void)
{
return board_init_cros_ec_devices(gd->fdt_blob);
}
int cros_ec_get_error(void)
{
#ifdef CONFIG_DM_CROS_EC
struct udevice *dev;
int ret;
ret = uclass_get_device(UCLASS_CROS_EC, 0, &dev);
if (ret && ret != -ENODEV)
return ret;
return 0;
#else
return local.cros_ec_err;
#endif
}