1*4882a593Smuzhiyun /*
2*4882a593Smuzhiyun * Copyright (c) 2015 Google, Inc
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * SPDX-License-Identifier: GPL-2.0+
5*4882a593Smuzhiyun */
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun #include <common.h>
8*4882a593Smuzhiyun #include <dm.h>
9*4882a593Smuzhiyun #include <keyboard.h>
10*4882a593Smuzhiyun
keyboard_start(struct stdio_dev * sdev)11*4882a593Smuzhiyun static int keyboard_start(struct stdio_dev *sdev)
12*4882a593Smuzhiyun {
13*4882a593Smuzhiyun struct udevice *dev = sdev->priv;
14*4882a593Smuzhiyun struct keyboard_ops *ops = keyboard_get_ops(dev);
15*4882a593Smuzhiyun
16*4882a593Smuzhiyun if (ops->start)
17*4882a593Smuzhiyun return ops->start(dev);
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun return 0;
20*4882a593Smuzhiyun }
21*4882a593Smuzhiyun
keyboard_stop(struct stdio_dev * sdev)22*4882a593Smuzhiyun static int keyboard_stop(struct stdio_dev *sdev)
23*4882a593Smuzhiyun {
24*4882a593Smuzhiyun struct udevice *dev = sdev->priv;
25*4882a593Smuzhiyun struct keyboard_ops *ops = keyboard_get_ops(dev);
26*4882a593Smuzhiyun
27*4882a593Smuzhiyun if (ops->stop)
28*4882a593Smuzhiyun return ops->stop(dev);
29*4882a593Smuzhiyun
30*4882a593Smuzhiyun return 0;
31*4882a593Smuzhiyun }
32*4882a593Smuzhiyun
keyboard_tstc(struct stdio_dev * sdev)33*4882a593Smuzhiyun static int keyboard_tstc(struct stdio_dev *sdev)
34*4882a593Smuzhiyun {
35*4882a593Smuzhiyun struct udevice *dev = sdev->priv;
36*4882a593Smuzhiyun struct keyboard_priv *priv = dev_get_uclass_priv(dev);
37*4882a593Smuzhiyun struct keyboard_ops *ops = keyboard_get_ops(dev);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun /* Just get input to do this for us if we can */
40*4882a593Smuzhiyun if (priv->input.dev)
41*4882a593Smuzhiyun return input_tstc(&priv->input);
42*4882a593Smuzhiyun else if (ops->tstc)
43*4882a593Smuzhiyun return ops->tstc(dev);
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun return -ENOSYS;
46*4882a593Smuzhiyun }
47*4882a593Smuzhiyun
keyboard_getc(struct stdio_dev * sdev)48*4882a593Smuzhiyun static int keyboard_getc(struct stdio_dev *sdev)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun struct udevice *dev = sdev->priv;
51*4882a593Smuzhiyun struct keyboard_priv *priv = dev_get_uclass_priv(dev);
52*4882a593Smuzhiyun struct keyboard_ops *ops = keyboard_get_ops(dev);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun /* Just get input to do this for us if we can */
55*4882a593Smuzhiyun if (priv->input.dev)
56*4882a593Smuzhiyun return input_getc(&priv->input);
57*4882a593Smuzhiyun else if (ops->getc)
58*4882a593Smuzhiyun return ops->getc(dev);
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun return -ENOSYS;
61*4882a593Smuzhiyun }
62*4882a593Smuzhiyun
keyboard_pre_probe(struct udevice * dev)63*4882a593Smuzhiyun static int keyboard_pre_probe(struct udevice *dev)
64*4882a593Smuzhiyun {
65*4882a593Smuzhiyun struct keyboard_priv *priv = dev_get_uclass_priv(dev);
66*4882a593Smuzhiyun struct stdio_dev *sdev = &priv->sdev;
67*4882a593Smuzhiyun int ret;
68*4882a593Smuzhiyun
69*4882a593Smuzhiyun strlcpy(sdev->name, dev->name, sizeof(sdev->name));
70*4882a593Smuzhiyun sdev->flags = DEV_FLAGS_INPUT;
71*4882a593Smuzhiyun sdev->getc = keyboard_getc;
72*4882a593Smuzhiyun sdev->tstc = keyboard_tstc;
73*4882a593Smuzhiyun sdev->start = keyboard_start;
74*4882a593Smuzhiyun sdev->stop = keyboard_stop;
75*4882a593Smuzhiyun sdev->priv = dev;
76*4882a593Smuzhiyun ret = input_init(&priv->input, 0);
77*4882a593Smuzhiyun if (ret) {
78*4882a593Smuzhiyun debug("%s: Cannot set up input, ret=%d - please add DEBUG to drivers/input/input.c to figure out the cause\n",
79*4882a593Smuzhiyun __func__, ret);
80*4882a593Smuzhiyun return ret;
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun
83*4882a593Smuzhiyun return 0;
84*4882a593Smuzhiyun }
85*4882a593Smuzhiyun
86*4882a593Smuzhiyun UCLASS_DRIVER(keyboard) = {
87*4882a593Smuzhiyun .id = UCLASS_KEYBOARD,
88*4882a593Smuzhiyun .name = "keyboard",
89*4882a593Smuzhiyun .pre_probe = keyboard_pre_probe,
90*4882a593Smuzhiyun .per_device_auto_alloc_size = sizeof(struct keyboard_priv),
91*4882a593Smuzhiyun };
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