1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2013 Google, Inc
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * (C) Copyright 2012
5*4882a593Smuzhiyun * Pavel Herrmann <morpheus.ibis@gmail.com>
6*4882a593Smuzhiyun *
7*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
8*4882a593Smuzhiyun */
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun #include <common.h>
11*4882a593Smuzhiyun #include <dm.h>
12*4882a593Smuzhiyun #include <dm-demo.h>
13*4882a593Smuzhiyun #include <errno.h>
14*4882a593Smuzhiyun #include <fdtdec.h>
15*4882a593Smuzhiyun #include <malloc.h>
16*4882a593Smuzhiyun #include <asm/io.h>
17*4882a593Smuzhiyun #include <linux/list.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun DECLARE_GLOBAL_DATA_PTR;
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun UCLASS_DRIVER(demo) = {
22*4882a593Smuzhiyun .name = "demo",
23*4882a593Smuzhiyun .id = UCLASS_DEMO,
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
demo_hello(struct udevice * dev,int ch)26*4882a593Smuzhiyun int demo_hello(struct udevice *dev, int ch)
27*4882a593Smuzhiyun {
28*4882a593Smuzhiyun const struct demo_ops *ops = device_get_ops(dev);
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun if (!ops->hello)
31*4882a593Smuzhiyun return -ENOSYS;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun return ops->hello(dev, ch);
34*4882a593Smuzhiyun }
35*4882a593Smuzhiyun
demo_status(struct udevice * dev,int * status)36*4882a593Smuzhiyun int demo_status(struct udevice *dev, int *status)
37*4882a593Smuzhiyun {
38*4882a593Smuzhiyun const struct demo_ops *ops = device_get_ops(dev);
39*4882a593Smuzhiyun
40*4882a593Smuzhiyun if (!ops->status)
41*4882a593Smuzhiyun return -ENOSYS;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun return ops->status(dev, status);
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
demo_get_light(struct udevice * dev)46*4882a593Smuzhiyun int demo_get_light(struct udevice *dev)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun const struct demo_ops *ops = device_get_ops(dev);
49*4882a593Smuzhiyun
50*4882a593Smuzhiyun if (!ops->get_light)
51*4882a593Smuzhiyun return -ENOSYS;
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun return ops->get_light(dev);
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
demo_set_light(struct udevice * dev,int light)56*4882a593Smuzhiyun int demo_set_light(struct udevice *dev, int light)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun const struct demo_ops *ops = device_get_ops(dev);
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun if (!ops->set_light)
61*4882a593Smuzhiyun return -ENOSYS;
62*4882a593Smuzhiyun
63*4882a593Smuzhiyun return ops->set_light(dev, light);
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
demo_parse_dt(struct udevice * dev)66*4882a593Smuzhiyun int demo_parse_dt(struct udevice *dev)
67*4882a593Smuzhiyun {
68*4882a593Smuzhiyun struct dm_demo_pdata *pdata = dev_get_platdata(dev);
69*4882a593Smuzhiyun int dn = dev_of_offset(dev);
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun pdata->sides = fdtdec_get_int(gd->fdt_blob, dn, "sides", 0);
72*4882a593Smuzhiyun pdata->colour = fdt_getprop(gd->fdt_blob, dn, "colour", NULL);
73*4882a593Smuzhiyun if (!pdata->sides || !pdata->colour) {
74*4882a593Smuzhiyun debug("%s: Invalid device tree data\n", __func__);
75*4882a593Smuzhiyun return -EINVAL;
76*4882a593Smuzhiyun }
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun return 0;
79*4882a593Smuzhiyun }
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