1*e84421d8SSimon Glass /*
2*e84421d8SSimon Glass * Copyright (c) 2015 Google, Inc
3*e84421d8SSimon Glass *
4*e84421d8SSimon Glass * SPDX-License-Identifier: GPL-2.0+
5*e84421d8SSimon Glass */
6*e84421d8SSimon Glass
7*e84421d8SSimon Glass #include <common.h>
8*e84421d8SSimon Glass #include <dm.h>
9*e84421d8SSimon Glass #include <keyboard.h>
10*e84421d8SSimon Glass
keyboard_start(struct stdio_dev * sdev)11*e84421d8SSimon Glass static int keyboard_start(struct stdio_dev *sdev)
12*e84421d8SSimon Glass {
13*e84421d8SSimon Glass struct udevice *dev = sdev->priv;
14*e84421d8SSimon Glass struct keyboard_ops *ops = keyboard_get_ops(dev);
15*e84421d8SSimon Glass
16*e84421d8SSimon Glass if (ops->start)
17*e84421d8SSimon Glass return ops->start(dev);
18*e84421d8SSimon Glass
19*e84421d8SSimon Glass return 0;
20*e84421d8SSimon Glass }
21*e84421d8SSimon Glass
keyboard_stop(struct stdio_dev * sdev)22*e84421d8SSimon Glass static int keyboard_stop(struct stdio_dev *sdev)
23*e84421d8SSimon Glass {
24*e84421d8SSimon Glass struct udevice *dev = sdev->priv;
25*e84421d8SSimon Glass struct keyboard_ops *ops = keyboard_get_ops(dev);
26*e84421d8SSimon Glass
27*e84421d8SSimon Glass if (ops->stop)
28*e84421d8SSimon Glass return ops->stop(dev);
29*e84421d8SSimon Glass
30*e84421d8SSimon Glass return 0;
31*e84421d8SSimon Glass }
32*e84421d8SSimon Glass
keyboard_tstc(struct stdio_dev * sdev)33*e84421d8SSimon Glass static int keyboard_tstc(struct stdio_dev *sdev)
34*e84421d8SSimon Glass {
35*e84421d8SSimon Glass struct udevice *dev = sdev->priv;
36*e84421d8SSimon Glass struct keyboard_priv *priv = dev_get_uclass_priv(dev);
37*e84421d8SSimon Glass struct keyboard_ops *ops = keyboard_get_ops(dev);
38*e84421d8SSimon Glass
39*e84421d8SSimon Glass /* Just get input to do this for us if we can */
40*e84421d8SSimon Glass if (priv->input.dev)
41*e84421d8SSimon Glass return input_tstc(&priv->input);
42*e84421d8SSimon Glass else if (ops->tstc)
43*e84421d8SSimon Glass return ops->tstc(dev);
44*e84421d8SSimon Glass
45*e84421d8SSimon Glass return -ENOSYS;
46*e84421d8SSimon Glass }
47*e84421d8SSimon Glass
keyboard_getc(struct stdio_dev * sdev)48*e84421d8SSimon Glass static int keyboard_getc(struct stdio_dev *sdev)
49*e84421d8SSimon Glass {
50*e84421d8SSimon Glass struct udevice *dev = sdev->priv;
51*e84421d8SSimon Glass struct keyboard_priv *priv = dev_get_uclass_priv(dev);
52*e84421d8SSimon Glass struct keyboard_ops *ops = keyboard_get_ops(dev);
53*e84421d8SSimon Glass
54*e84421d8SSimon Glass /* Just get input to do this for us if we can */
55*e84421d8SSimon Glass if (priv->input.dev)
56*e84421d8SSimon Glass return input_getc(&priv->input);
57*e84421d8SSimon Glass else if (ops->getc)
58*e84421d8SSimon Glass return ops->getc(dev);
59*e84421d8SSimon Glass
60*e84421d8SSimon Glass return -ENOSYS;
61*e84421d8SSimon Glass }
62*e84421d8SSimon Glass
keyboard_pre_probe(struct udevice * dev)63*e84421d8SSimon Glass static int keyboard_pre_probe(struct udevice *dev)
64*e84421d8SSimon Glass {
65*e84421d8SSimon Glass struct keyboard_priv *priv = dev_get_uclass_priv(dev);
66*e84421d8SSimon Glass struct stdio_dev *sdev = &priv->sdev;
67*e84421d8SSimon Glass int ret;
68*e84421d8SSimon Glass
69*e84421d8SSimon Glass strlcpy(sdev->name, dev->name, sizeof(sdev->name));
70*e84421d8SSimon Glass sdev->flags = DEV_FLAGS_INPUT;
71*e84421d8SSimon Glass sdev->getc = keyboard_getc;
72*e84421d8SSimon Glass sdev->tstc = keyboard_tstc;
73*e84421d8SSimon Glass sdev->start = keyboard_start;
74*e84421d8SSimon Glass sdev->stop = keyboard_stop;
75*e84421d8SSimon Glass sdev->priv = dev;
76*e84421d8SSimon Glass ret = input_init(&priv->input, 0);
77*e84421d8SSimon Glass if (ret) {
78*e84421d8SSimon Glass debug("%s: Cannot set up input, ret=%d - please add DEBUG to drivers/input/input.c to figure out the cause\n",
79*e84421d8SSimon Glass __func__, ret);
80*e84421d8SSimon Glass return ret;
81*e84421d8SSimon Glass }
82*e84421d8SSimon Glass
83*e84421d8SSimon Glass return 0;
84*e84421d8SSimon Glass }
85*e84421d8SSimon Glass
86*e84421d8SSimon Glass UCLASS_DRIVER(keyboard) = {
87*e84421d8SSimon Glass .id = UCLASS_KEYBOARD,
88*e84421d8SSimon Glass .name = "keyboard",
89*e84421d8SSimon Glass .pre_probe = keyboard_pre_probe,
90*e84421d8SSimon Glass .per_device_auto_alloc_size = sizeof(struct keyboard_priv),
91*e84421d8SSimon Glass };
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