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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
*/
#include <common.h>
#include <dm.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include <errno.h>
#include <misc.h>
/*
* Implement a miscellaneous uclass for those do not fit other more
* general classes. A set of generic read, write and ioctl methods may
* be used to access the device.
*/
int misc_read(struct udevice *dev, int offset, void *buf, int size)
{
const struct misc_ops *ops = device_get_ops(dev);
if (!ops->read)
return -ENOSYS;
return ops->read(dev, offset, buf, size);
}
int misc_write(struct udevice *dev, int offset, void *buf, int size)
{
const struct misc_ops *ops = device_get_ops(dev);
if (!ops->write)
return -ENOSYS;
return ops->write(dev, offset, buf, size);
}
int misc_ioctl(struct udevice *dev, unsigned long request, void *buf)
{
const struct misc_ops *ops = device_get_ops(dev);
if (!ops->ioctl)
return -ENOSYS;
return ops->ioctl(dev, request, buf);
}
int misc_call(struct udevice *dev, int msgid, void *tx_msg, int tx_size,
void *rx_msg, int rx_size)
{
const struct misc_ops *ops = device_get_ops(dev);
if (!ops->call)
return -ENOSYS;
return ops->call(dev, msgid, tx_msg, tx_size, rx_msg, rx_size);
}
int misc_set_enabled(struct udevice *dev, bool val)
{
const struct misc_ops *ops = device_get_ops(dev);
if (!ops->set_enabled)
return -ENOSYS;
return ops->set_enabled(dev, val);
}
int misc_init_by_ofnode(ofnode node)
{
struct udevice *dev = NULL;
struct uclass *uc;
int ret;
ret = uclass_get(UCLASS_MISC, &uc);
if (ret)
return ret;
uclass_foreach_dev(dev, uc) {
if (ofnode_equal(node, dev_ofnode(dev))) {
ret = device_probe(dev);
if (ret)
debug("%s: Failed to initialize - %d\n",
dev->name, ret);
return ret;
}
}
return -ENODEV;
}
UCLASS_DRIVER(misc) = {
.id = UCLASS_MISC,
.name = "misc",
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
.post_bind = dm_scan_fdt_dev,
#endif
};
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