blob: f19934e6bb6629762e6a824a712fa45a435c227d [file] [log] [blame]
Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Simon Glasse84421d2015-10-18 21:17:10 -06002/*
3 * Copyright (c) 2015 Google, Inc
Simon Glasse84421d2015-10-18 21:17:10 -06004 */
5
6#include <common.h>
7#include <dm.h>
8#include <keyboard.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -06009#include <log.h>
Simon Glasse84421d2015-10-18 21:17:10 -060010
11static int keyboard_start(struct stdio_dev *sdev)
12{
13 struct udevice *dev = sdev->priv;
14 struct keyboard_ops *ops = keyboard_get_ops(dev);
15
16 if (ops->start)
17 return ops->start(dev);
18
19 return 0;
20}
21
22static int keyboard_stop(struct stdio_dev *sdev)
23{
24 struct udevice *dev = sdev->priv;
25 struct keyboard_ops *ops = keyboard_get_ops(dev);
26
27 if (ops->stop)
28 return ops->stop(dev);
29
30 return 0;
31}
32
33static int keyboard_tstc(struct stdio_dev *sdev)
34{
35 struct udevice *dev = sdev->priv;
36 struct keyboard_priv *priv = dev_get_uclass_priv(dev);
37 struct keyboard_ops *ops = keyboard_get_ops(dev);
38
39 /* Just get input to do this for us if we can */
40 if (priv->input.dev)
41 return input_tstc(&priv->input);
42 else if (ops->tstc)
43 return ops->tstc(dev);
44
45 return -ENOSYS;
46}
47
48static int keyboard_getc(struct stdio_dev *sdev)
49{
50 struct udevice *dev = sdev->priv;
51 struct keyboard_priv *priv = dev_get_uclass_priv(dev);
52 struct keyboard_ops *ops = keyboard_get_ops(dev);
53
54 /* Just get input to do this for us if we can */
55 if (priv->input.dev)
56 return input_getc(&priv->input);
57 else if (ops->getc)
58 return ops->getc(dev);
59
60 return -ENOSYS;
61}
62
63static int keyboard_pre_probe(struct udevice *dev)
64{
65 struct keyboard_priv *priv = dev_get_uclass_priv(dev);
66 struct stdio_dev *sdev = &priv->sdev;
67 int ret;
68
69 strlcpy(sdev->name, dev->name, sizeof(sdev->name));
70 sdev->flags = DEV_FLAGS_INPUT;
71 sdev->getc = keyboard_getc;
72 sdev->tstc = keyboard_tstc;
73 sdev->start = keyboard_start;
74 sdev->stop = keyboard_stop;
75 sdev->priv = dev;
76 ret = input_init(&priv->input, 0);
77 if (ret) {
78 debug("%s: Cannot set up input, ret=%d - please add DEBUG to drivers/input/input.c to figure out the cause\n",
79 __func__, ret);
80 return ret;
81 }
82
83 return 0;
84}
85
86UCLASS_DRIVER(keyboard) = {
87 .id = UCLASS_KEYBOARD,
88 .name = "keyboard",
89 .pre_probe = keyboard_pre_probe,
90 .per_device_auto_alloc_size = sizeof(struct keyboard_priv),
91};