mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 08:59:33 +00:00
46b2e5e92c
This adds an NVMEM reboot mode driver, similar to Linux's implementation. This allows using the same device tree binding for Linux and U-Boot in most cases. Signed-off-by: Sean Anderson <sean.anderson@seco.com> Reviewed-by: Simon Glass <sjg@chromium.org>
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2022 Sean Anderson <sean.anderson@seco.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <nvmem.h>
|
|
#include <reboot-mode/reboot-mode.h>
|
|
|
|
/**
|
|
* struct nvmem_reboot_mode_priv - Private data for the nvmem reboot mode device
|
|
* @cell: The nvmem cell to store the mode in
|
|
*/
|
|
struct nvmem_reboot_mode_priv {
|
|
struct nvmem_cell cell;
|
|
};
|
|
|
|
static int reboot_mode_get(struct udevice *dev, u32 *mode)
|
|
{
|
|
struct nvmem_reboot_mode_priv *priv = dev_get_priv(dev);
|
|
|
|
return nvmem_cell_read(&priv->cell, mode, sizeof(*mode));
|
|
}
|
|
|
|
static int reboot_mode_set(struct udevice *dev, u32 mode)
|
|
{
|
|
struct nvmem_reboot_mode_priv *priv = dev_get_priv(dev);
|
|
|
|
return nvmem_cell_write(&priv->cell, &mode, sizeof(mode));
|
|
}
|
|
|
|
static const struct reboot_mode_ops nvmem_reboot_mode_ops = {
|
|
.get = reboot_mode_get,
|
|
.set = reboot_mode_set,
|
|
};
|
|
|
|
static int reboot_mode_probe(struct udevice *dev)
|
|
{
|
|
struct nvmem_reboot_mode_priv *priv = dev_get_priv(dev);
|
|
|
|
return nvmem_cell_get_by_name(dev, "reboot-mode", &priv->cell);
|
|
}
|
|
|
|
static const struct udevice_id nvmem_reboot_mode_ids[] = {
|
|
{ .compatible = "nvmem-reboot-mode" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(nvmem_reboot_mode) = {
|
|
.name = "nvmem-reboot-mode",
|
|
.id = UCLASS_REBOOT_MODE,
|
|
.of_match = nvmem_reboot_mode_ids,
|
|
.probe = reboot_mode_probe,
|
|
.priv_auto = sizeof(struct nvmem_reboot_mode_priv),
|
|
.ops = &nvmem_reboot_mode_ops,
|
|
};
|