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https://github.com/AsahiLinux/u-boot
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41575d8e4c
This construct is quite long-winded. In earlier days it made some sense since auto-allocation was a strange concept. But with driver model now used pretty universally, we can shorten this to 'auto'. This reduces verbosity and makes it easier to read. Coincidentally it also ensures that every declaration is on one line, thus making dtoc's job easier. Signed-off-by: Simon Glass <sjg@chromium.org>
133 lines
2.5 KiB
C
133 lines
2.5 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 = sizeof(struct misc_sandbox_priv),
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};
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