1 /*
2 * Copyright (c) 2013 Google, Inc
3 *
4 * (C) Copyright 2012
5 * Pavel Herrmann <morpheus.ibis@gmail.com>
6 *
7 * SPDX-License-Identifier: GPL-2.0+
8 */
9
10 #include <common.h>
11 #include <dm.h>
12 #include <dm-demo.h>
13 #include <errno.h>
14 #include <fdtdec.h>
15 #include <malloc.h>
16 #include <asm/io.h>
17 #include <linux/list.h>
18
19 DECLARE_GLOBAL_DATA_PTR;
20
21 UCLASS_DRIVER(demo) = {
22 .name = "demo",
23 .id = UCLASS_DEMO,
24 };
25
demo_hello(struct udevice * dev,int ch)26 int demo_hello(struct udevice *dev, int ch)
27 {
28 const struct demo_ops *ops = device_get_ops(dev);
29
30 if (!ops->hello)
31 return -ENOSYS;
32
33 return ops->hello(dev, ch);
34 }
35
demo_status(struct udevice * dev,int * status)36 int demo_status(struct udevice *dev, int *status)
37 {
38 const struct demo_ops *ops = device_get_ops(dev);
39
40 if (!ops->status)
41 return -ENOSYS;
42
43 return ops->status(dev, status);
44 }
45
demo_get_light(struct udevice * dev)46 int demo_get_light(struct udevice *dev)
47 {
48 const struct demo_ops *ops = device_get_ops(dev);
49
50 if (!ops->get_light)
51 return -ENOSYS;
52
53 return ops->get_light(dev);
54 }
55
demo_set_light(struct udevice * dev,int light)56 int demo_set_light(struct udevice *dev, int light)
57 {
58 const struct demo_ops *ops = device_get_ops(dev);
59
60 if (!ops->set_light)
61 return -ENOSYS;
62
63 return ops->set_light(dev, light);
64 }
65
demo_parse_dt(struct udevice * dev)66 int demo_parse_dt(struct udevice *dev)
67 {
68 struct dm_demo_pdata *pdata = dev_get_platdata(dev);
69 int dn = dev_of_offset(dev);
70
71 pdata->sides = fdtdec_get_int(gd->fdt_blob, dn, "sides", 0);
72 pdata->colour = fdt_getprop(gd->fdt_blob, dn, "colour", NULL);
73 if (!pdata->sides || !pdata->colour) {
74 debug("%s: Invalid device tree data\n", __func__);
75 return -EINVAL;
76 }
77
78 return 0;
79 }
80