1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.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);
}
UCLASS_DRIVER(misc) = {
.id = UCLASS_MISC,
.name = "misc",
};
|
