demo-uclass.c
1.45 KB
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
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2013 Google, Inc
*
* (C) Copyright 2012
* Pavel Herrmann <morpheus.ibis@gmail.com>
*/
#include <common.h>
#include <dm.h>
#include <dm-demo.h>
#include <errno.h>
#include <fdtdec.h>
#include <malloc.h>
#include <asm/io.h>
#include <linux/list.h>
DECLARE_GLOBAL_DATA_PTR;
UCLASS_DRIVER(demo) = {
.name = "demo",
.id = UCLASS_DEMO,
};
int demo_hello(struct udevice *dev, int ch)
{
const struct demo_ops *ops = device_get_ops(dev);
if (!ops->hello)
return -ENOSYS;
return ops->hello(dev, ch);
}
int demo_status(struct udevice *dev, int *status)
{
const struct demo_ops *ops = device_get_ops(dev);
if (!ops->status)
return -ENOSYS;
return ops->status(dev, status);
}
int demo_get_light(struct udevice *dev)
{
const struct demo_ops *ops = device_get_ops(dev);
if (!ops->get_light)
return -ENOSYS;
return ops->get_light(dev);
}
int demo_set_light(struct udevice *dev, int light)
{
const struct demo_ops *ops = device_get_ops(dev);
if (!ops->set_light)
return -ENOSYS;
return ops->set_light(dev, light);
}
int demo_parse_dt(struct udevice *dev)
{
struct dm_demo_pdata *pdata = dev_get_platdata(dev);
int dn = dev_of_offset(dev);
pdata->sides = fdtdec_get_int(gd->fdt_blob, dn, "sides", 0);
pdata->colour = fdt_getprop(gd->fdt_blob, dn, "colour", NULL);
if (!pdata->sides || !pdata->colour) {
debug("%s: Invalid device tree data\n", __func__);
return -EINVAL;
}
return 0;
}