134 lines
2.6 KiB
C
134 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2018
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* Mario Six, Guntermann & Drunck GmbH, mario.six@gdsys.cc
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*/
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#include <common.h>
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#include <dm.h>
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#include <misc.h>
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struct misc_sandbox_priv {
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u8 mem[128];
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ulong last_ioctl;
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bool enabled;
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};
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int misc_sandbox_read(struct udevice *dev, int offset, void *buf, int size)
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{
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struct misc_sandbox_priv *priv = dev_get_priv(dev);
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memcpy(buf, priv->mem + offset, size);
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return size;
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}
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int misc_sandbox_write(struct udevice *dev, int offset, const void *buf,
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int size)
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{
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struct misc_sandbox_priv *priv = dev_get_priv(dev);
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memcpy(priv->mem + offset, buf, size);
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return size;
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}
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int misc_sandbox_ioctl(struct udevice *dev, unsigned long request, void *buf)
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{
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struct misc_sandbox_priv *priv = dev_get_priv(dev);
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priv->last_ioctl = request;
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return 0;
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}
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int misc_sandbox_call(struct udevice *dev, int msgid, void *tx_msg,
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int tx_size, void *rx_msg, int rx_size)
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{
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struct misc_sandbox_priv *priv = dev_get_priv(dev);
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if (msgid == 0) {
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int num = *(int *)tx_msg;
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switch (num) {
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case 0:
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strncpy(rx_msg, "Zero", rx_size);
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break;
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case 1:
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strncpy(rx_msg, "One", rx_size);
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break;
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case 2:
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strncpy(rx_msg, "Two", rx_size);
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break;
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default:
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return -EINVAL;
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}
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}
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if (msgid == 1) {
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int num = *(int *)tx_msg;
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switch (num) {
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case 0:
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strncpy(rx_msg, "Forty", rx_size);
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break;
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case 1:
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strncpy(rx_msg, "Forty-one", rx_size);
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break;
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case 2:
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strncpy(rx_msg, "Forty-two", rx_size);
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break;
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default:
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return -EINVAL;
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}
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}
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if (msgid == 2)
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memcpy(rx_msg, &priv->last_ioctl, sizeof(priv->last_ioctl));
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if (msgid == 3)
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memcpy(rx_msg, &priv->enabled, sizeof(priv->enabled));
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return 0;
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}
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int misc_sandbox_set_enabled(struct udevice *dev, bool val)
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{
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struct misc_sandbox_priv *priv = dev_get_priv(dev);
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priv->enabled = !priv->enabled;
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return 0;
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}
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static const struct misc_ops misc_sandbox_ops = {
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.read = misc_sandbox_read,
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.write = misc_sandbox_write,
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.ioctl = misc_sandbox_ioctl,
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.call = misc_sandbox_call,
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.set_enabled = misc_sandbox_set_enabled,
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};
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int misc_sandbox_probe(struct udevice *dev)
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{
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struct misc_sandbox_priv *priv = dev_get_priv(dev);
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priv->enabled = true;
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return 0;
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}
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static const struct udevice_id misc_sandbox_ids[] = {
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{ .compatible = "sandbox,misc_sandbox" },
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{ }
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};
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U_BOOT_DRIVER(misc_sandbox) = {
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.name = "misc_sandbox",
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.id = UCLASS_MISC,
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.ops = &misc_sandbox_ops,
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.of_match = misc_sandbox_ids,
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.probe = misc_sandbox_probe,
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.priv_auto_alloc_size = sizeof(struct misc_sandbox_priv),
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};
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