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/*
* Copyright (c) 2015 Google, Inc
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <dm.h>
#include <keyboard.h>
static int keyboard_start(struct stdio_dev *sdev)
{
struct udevice *dev = sdev->priv;
struct keyboard_ops *ops = keyboard_get_ops(dev);
if (ops->start)
return ops->start(dev);
return 0;
}
static int keyboard_stop(struct stdio_dev *sdev)
{
struct udevice *dev = sdev->priv;
struct keyboard_ops *ops = keyboard_get_ops(dev);
if (ops->stop)
return ops->stop(dev);
return 0;
}
static int keyboard_tstc(struct stdio_dev *sdev)
{
struct udevice *dev = sdev->priv;
struct keyboard_priv *priv = dev_get_uclass_priv(dev);
struct keyboard_ops *ops = keyboard_get_ops(dev);
/* Just get input to do this for us if we can */
if (priv->input.dev)
return input_tstc(&priv->input);
else if (ops->tstc)
return ops->tstc(dev);
return -ENOSYS;
}
static int keyboard_getc(struct stdio_dev *sdev)
{
struct udevice *dev = sdev->priv;
struct keyboard_priv *priv = dev_get_uclass_priv(dev);
struct keyboard_ops *ops = keyboard_get_ops(dev);
/* Just get input to do this for us if we can */
if (priv->input.dev)
return input_getc(&priv->input);
else if (ops->getc)
return ops->getc(dev);
return -ENOSYS;
}
static int keyboard_pre_probe(struct udevice *dev)
{
struct keyboard_priv *priv = dev_get_uclass_priv(dev);
struct stdio_dev *sdev = &priv->sdev;
int ret;
strlcpy(sdev->name, dev->name, sizeof(sdev->name));
sdev->flags = DEV_FLAGS_INPUT;
sdev->getc = keyboard_getc;
sdev->tstc = keyboard_tstc;
sdev->start = keyboard_start;
sdev->stop = keyboard_stop;
sdev->priv = dev;
ret = input_init(&priv->input, 0);
if (ret) {
debug("%s: Cannot set up input, ret=%d - please add DEBUG to drivers/input/input.c to figure out the cause\n",
__func__, ret);
return ret;
}
return 0;
}
UCLASS_DRIVER(keyboard) = {
.id = UCLASS_KEYBOARD,
.name = "keyboard",
.pre_probe = keyboard_pre_probe,
.per_device_auto_alloc_size = sizeof(struct keyboard_priv),
};
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