u-boot/drivers/reset/sandbox-reset.c
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

107 lines
2.1 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2016, NVIDIA CORPORATION.
*/
#include <common.h>
#include <dm.h>
#include <reset-uclass.h>
#include <asm/io.h>
#include <asm/reset.h>
#define SANDBOX_RESET_SIGNALS 101
struct sandbox_reset_signal {
bool asserted;
};
struct sandbox_reset {
struct sandbox_reset_signal signals[SANDBOX_RESET_SIGNALS];
};
static int sandbox_reset_request(struct reset_ctl *reset_ctl)
{
debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
if (reset_ctl->id >= SANDBOX_RESET_SIGNALS)
return -EINVAL;
return 0;
}
static int sandbox_reset_free(struct reset_ctl *reset_ctl)
{
debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
return 0;
}
static int sandbox_reset_assert(struct reset_ctl *reset_ctl)
{
struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);
debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
sbr->signals[reset_ctl->id].asserted = true;
return 0;
}
static int sandbox_reset_deassert(struct reset_ctl *reset_ctl)
{
struct sandbox_reset *sbr = dev_get_priv(reset_ctl->dev);
debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
sbr->signals[reset_ctl->id].asserted = false;
return 0;
}
static int sandbox_reset_bind(struct udevice *dev)
{
debug("%s(dev=%p)\n", __func__, dev);
return 0;
}
static int sandbox_reset_probe(struct udevice *dev)
{
debug("%s(dev=%p)\n", __func__, dev);
return 0;
}
static const struct udevice_id sandbox_reset_ids[] = {
{ .compatible = "sandbox,reset-ctl" },
{ }
};
struct reset_ops sandbox_reset_reset_ops = {
.request = sandbox_reset_request,
.free = sandbox_reset_free,
.rst_assert = sandbox_reset_assert,
.rst_deassert = sandbox_reset_deassert,
};
U_BOOT_DRIVER(sandbox_reset) = {
.name = "sandbox_reset",
.id = UCLASS_RESET,
.of_match = sandbox_reset_ids,
.bind = sandbox_reset_bind,
.probe = sandbox_reset_probe,
.priv_auto_alloc_size = sizeof(struct sandbox_reset),
.ops = &sandbox_reset_reset_ops,
};
int sandbox_reset_query(struct udevice *dev, unsigned long id)
{
struct sandbox_reset *sbr = dev_get_priv(dev);
debug("%s(dev=%p, id=%ld)\n", __func__, dev, id);
if (id >= SANDBOX_RESET_SIGNALS)
return -EINVAL;
return sbr->signals[id].asserted;
}