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