mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
8729b1ae2c
At present these functions return 0 on success. For some devices we want to know how many bytes were transferred. It seems useful to adjust the API to be more like the POSIX read() and write() functions. Update these two methods, a test and all users. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
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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