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https://xff.cz/git/u-boot/
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e84421d8f3
Add a uclass for keyboard input, mirroring the existing stdio methods. This is enabled by a new CONFIG_DM_KEYBOARD option. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Marek Vasut <marex@denx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/*
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* Copyright (c) 2015 Google, Inc
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <keyboard.h>
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static int keyboard_start(struct stdio_dev *sdev)
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{
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struct udevice *dev = sdev->priv;
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struct keyboard_ops *ops = keyboard_get_ops(dev);
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if (ops->start)
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return ops->start(dev);
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return 0;
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}
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static int keyboard_stop(struct stdio_dev *sdev)
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{
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struct udevice *dev = sdev->priv;
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struct keyboard_ops *ops = keyboard_get_ops(dev);
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if (ops->stop)
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return ops->stop(dev);
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return 0;
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}
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static int keyboard_tstc(struct stdio_dev *sdev)
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{
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struct udevice *dev = sdev->priv;
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struct keyboard_priv *priv = dev_get_uclass_priv(dev);
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struct keyboard_ops *ops = keyboard_get_ops(dev);
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/* Just get input to do this for us if we can */
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if (priv->input.dev)
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return input_tstc(&priv->input);
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else if (ops->tstc)
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return ops->tstc(dev);
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return -ENOSYS;
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}
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static int keyboard_getc(struct stdio_dev *sdev)
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{
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struct udevice *dev = sdev->priv;
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struct keyboard_priv *priv = dev_get_uclass_priv(dev);
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struct keyboard_ops *ops = keyboard_get_ops(dev);
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/* Just get input to do this for us if we can */
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if (priv->input.dev)
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return input_getc(&priv->input);
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else if (ops->getc)
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return ops->getc(dev);
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return -ENOSYS;
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}
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static int keyboard_pre_probe(struct udevice *dev)
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{
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struct keyboard_priv *priv = dev_get_uclass_priv(dev);
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struct stdio_dev *sdev = &priv->sdev;
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int ret;
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strlcpy(sdev->name, dev->name, sizeof(sdev->name));
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sdev->flags = DEV_FLAGS_INPUT;
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sdev->getc = keyboard_getc;
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sdev->tstc = keyboard_tstc;
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sdev->start = keyboard_start;
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sdev->stop = keyboard_stop;
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sdev->priv = dev;
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ret = input_init(&priv->input, 0);
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if (ret) {
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debug("%s: Cannot set up input, ret=%d - please add DEBUG to drivers/input/input.c to figure out the cause\n",
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__func__, ret);
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return ret;
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}
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return 0;
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}
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UCLASS_DRIVER(keyboard) = {
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.id = UCLASS_KEYBOARD,
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.name = "keyboard",
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.pre_probe = keyboard_pre_probe,
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.per_device_auto_alloc_size = sizeof(struct keyboard_priv),
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};
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