1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw>
4 */
5
6 #define LOG_CATEGORY UCLASS_MISC
7
8 #include <common.h>
9 #include <dm.h>
10 #include <errno.h>
11 #include <misc.h>
12
13 /*
14 * Implement a miscellaneous uclass for those do not fit other more
15 * general classes. A set of generic read, write and ioctl methods may
16 * be used to access the device.
17 */
18
misc_read(struct udevice * dev,int offset,void * buf,int size)19 int misc_read(struct udevice *dev, int offset, void *buf, int size)
20 {
21 const struct misc_ops *ops = device_get_ops(dev);
22
23 if (!ops->read)
24 return -ENOSYS;
25
26 return ops->read(dev, offset, buf, size);
27 }
28
misc_write(struct udevice * dev,int offset,void * buf,int size)29 int misc_write(struct udevice *dev, int offset, void *buf, int size)
30 {
31 const struct misc_ops *ops = device_get_ops(dev);
32
33 if (!ops->write)
34 return -ENOSYS;
35
36 return ops->write(dev, offset, buf, size);
37 }
38
misc_ioctl(struct udevice * dev,unsigned long request,void * buf)39 int misc_ioctl(struct udevice *dev, unsigned long request, void *buf)
40 {
41 const struct misc_ops *ops = device_get_ops(dev);
42
43 if (!ops->ioctl)
44 return -ENOSYS;
45
46 return ops->ioctl(dev, request, buf);
47 }
48
misc_call(struct udevice * dev,int msgid,void * tx_msg,int tx_size,void * rx_msg,int rx_size)49 int misc_call(struct udevice *dev, int msgid, void *tx_msg, int tx_size,
50 void *rx_msg, int rx_size)
51 {
52 const struct misc_ops *ops = device_get_ops(dev);
53
54 if (!ops->call)
55 return -ENOSYS;
56
57 return ops->call(dev, msgid, tx_msg, tx_size, rx_msg, rx_size);
58 }
59
misc_set_enabled(struct udevice * dev,bool val)60 int misc_set_enabled(struct udevice *dev, bool val)
61 {
62 const struct misc_ops *ops = device_get_ops(dev);
63
64 if (!ops->set_enabled)
65 return -ENOSYS;
66
67 return ops->set_enabled(dev, val);
68 }
69
70 UCLASS_DRIVER(misc) = {
71 .id = UCLASS_MISC,
72 .name = "misc",
73 #if CONFIG_IS_ENABLED(OF_REAL)
74 .post_bind = dm_scan_fdt_dev,
75 #endif
76 };
77