1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
4 */
5
6 #include <common.h>
7 #include <dm.h>
8 #include <errno.h>
9 #include <misc.h>
10
11 /*
12 * Implement a miscellaneous uclass for those do not fit other more
13 * general classes. A set of generic read, write and ioctl methods may
14 * be used to access the device.
15 */
16
misc_read(struct udevice * dev,int offset,void * buf,int size)17 int misc_read(struct udevice *dev, int offset, void *buf, int size)
18 {
19 const struct misc_ops *ops = device_get_ops(dev);
20
21 if (!ops->read)
22 return -ENOSYS;
23
24 return ops->read(dev, offset, buf, size);
25 }
26
misc_write(struct udevice * dev,int offset,void * buf,int size)27 int misc_write(struct udevice *dev, int offset, void *buf, int size)
28 {
29 const struct misc_ops *ops = device_get_ops(dev);
30
31 if (!ops->write)
32 return -ENOSYS;
33
34 return ops->write(dev, offset, buf, size);
35 }
36
misc_ioctl(struct udevice * dev,unsigned long request,void * buf)37 int misc_ioctl(struct udevice *dev, unsigned long request, void *buf)
38 {
39 const struct misc_ops *ops = device_get_ops(dev);
40
41 if (!ops->ioctl)
42 return -ENOSYS;
43
44 return ops->ioctl(dev, request, buf);
45 }
46
misc_call(struct udevice * dev,int msgid,void * tx_msg,int tx_size,void * rx_msg,int rx_size)47 int misc_call(struct udevice *dev, int msgid, void *tx_msg, int tx_size,
48 void *rx_msg, int rx_size)
49 {
50 const struct misc_ops *ops = device_get_ops(dev);
51
52 if (!ops->call)
53 return -ENOSYS;
54
55 return ops->call(dev, msgid, tx_msg, tx_size, rx_msg, rx_size);
56 }
57
misc_set_enabled(struct udevice * dev,bool val)58 int misc_set_enabled(struct udevice *dev, bool val)
59 {
60 const struct misc_ops *ops = device_get_ops(dev);
61
62 if (!ops->set_enabled)
63 return -ENOSYS;
64
65 return ops->set_enabled(dev, val);
66 }
67
68 UCLASS_DRIVER(misc) = {
69 .id = UCLASS_MISC,
70 .name = "misc",
71 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
72 .post_bind = dm_scan_fdt_dev,
73 #endif
74 };
75