// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (c) 2015 Google, Inc */ #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), };