u-boot/drivers/core/root.c
Heiko Schocher 54c5d08a09 dm: rename device struct to udevice
using UBI and DM together leads in compiler error, as
both define a "struct device", so rename "struct device"
in include/dm/device.h to "struct udevice", as we use
linux code (MTD/UBI/UBIFS some USB code,...) and cannot
change the linux "struct device"

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Marek Vasut <marex@denx.de>
2014-05-27 10:21:32 -04:00

102 lines
1.7 KiB
C

/*
* Copyright (c) 2013 Google, Inc
*
* (C) Copyright 2012
* Pavel Herrmann <morpheus.ibis@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <errno.h>
#include <malloc.h>
#include <dm/device.h>
#include <dm/device-internal.h>
#include <dm/lists.h>
#include <dm/platdata.h>
#include <dm/uclass.h>
#include <dm/util.h>
#include <linux/list.h>
DECLARE_GLOBAL_DATA_PTR;
static const struct driver_info root_info = {
.name = "root_driver",
};
struct udevice *dm_root(void)
{
if (!gd->dm_root) {
dm_warn("Virtual root driver does not exist!\n");
return NULL;
}
return gd->dm_root;
}
int dm_init(void)
{
int ret;
if (gd->dm_root) {
dm_warn("Virtual root driver already exists!\n");
return -EINVAL;
}
INIT_LIST_HEAD(&gd->uclass_root);
ret = device_bind_by_name(NULL, &root_info, &gd->dm_root);
if (ret)
return ret;
return 0;
}
int dm_scan_platdata(void)
{
int ret;
ret = lists_bind_drivers(gd->dm_root);
if (ret == -ENOENT) {
dm_warn("Some drivers were not found\n");
ret = 0;
}
if (ret)
return ret;
return 0;
}
#ifdef CONFIG_OF_CONTROL
int dm_scan_fdt(const void *blob)
{
int offset = 0;
int ret = 0, err;
int depth = 0;
do {
offset = fdt_next_node(blob, offset, &depth);
if (offset > 0 && depth == 1) {
err = lists_bind_fdt(gd->dm_root, blob, offset);
if (err && !ret)
ret = err;
}
} while (offset > 0);
if (ret)
dm_warn("Some drivers failed to bind\n");
return ret;
}
#endif
/* This is the root driver - all drivers are children of this */
U_BOOT_DRIVER(root_driver) = {
.name = "root_driver",
.id = UCLASS_ROOT,
};
/* This is the root uclass */
UCLASS_DRIVER(root) = {
.name = "root",
.id = UCLASS_ROOT,
};