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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c), Vaisala Oyj
*/
#include <common.h>
#include <dm.h>
#include <dm/device_compat.h>
#include <dm/devres.h>
#include <exports.h>
#include <reboot-mode/reboot-mode.h>
DECLARE_GLOBAL_DATA_PTR;
int dm_reboot_mode_update(struct udevice *dev)
{
struct reboot_mode_ops *ops = reboot_mode_get_ops(dev);
u32 rebootmode;
int ret, i;
assert(ops);
if (!ops->get)
return -ENOSYS;
ret = ops->get(dev, &rebootmode);
if (ret < 0) {
dev_err(dev, "Failed to retrieve the reboot mode value\n");
return ret;
}
const struct reboot_mode_uclass_platdata *plat_data =
dev_get_uclass_plat(dev);
for (i = 0; i < plat_data->count; i++) {
if (plat_data->modes[i].mode_id == rebootmode) {
ret = env_set(plat_data->env_variable,
plat_data->modes[i].mode_name);
if (ret) {
dev_err(dev, "Failed to set env: %s\n",
plat_data->env_variable);
return ret;
}
}
}
if (ops->set) {
/* Clear the value */
rebootmode = 0;
ret = ops->set(dev, rebootmode);
if (ret) {
dev_err(dev, "Failed to clear the reboot mode\n");
return ret;
}
}
return 0;
}
int dm_reboot_mode_pre_probe(struct udevice *dev)
{
struct reboot_mode_uclass_platdata *plat_data;
plat_data = dev_get_uclass_plat(dev);
if (!plat_data)
return -EINVAL;
#if CONFIG_IS_ENABLED(OF_CONTROL)
const int node = dev_of_offset(dev);
const char *mode_prefix = "mode-";
const int mode_prefix_len = strlen(mode_prefix);
int property;
const u32 *propvalue;
const char *propname;
plat_data->env_variable = fdt_getprop(gd->fdt_blob,
node,
"u-boot,env-variable",
NULL);
if (!plat_data->env_variable)
plat_data->env_variable = "reboot-mode";
plat_data->count = 0;
fdt_for_each_property_offset(property, gd->fdt_blob, node) {
propvalue = fdt_getprop_by_offset(gd->fdt_blob,
property, &propname, NULL);
if (!propvalue) {
dev_err(dev, "Could not get the value for property %s\n",
propname);
return -EINVAL;
}
if (!strncmp(propname, mode_prefix, mode_prefix_len))
plat_data->count++;
}
plat_data->modes = devm_kcalloc(dev, plat_data->count,
sizeof(struct reboot_mode_mode), 0);
struct reboot_mode_mode *next = plat_data->modes;
fdt_for_each_property_offset(property, gd->fdt_blob, node) {
propvalue = fdt_getprop_by_offset(gd->fdt_blob,
property, &propname, NULL);
if (!propvalue) {
dev_err(dev, "Could not get the value for property %s\n",
propname);
return -EINVAL;
}
if (!strncmp(propname, mode_prefix, mode_prefix_len)) {
next->mode_name = &propname[mode_prefix_len];
next->mode_id = fdt32_to_cpu(*propvalue);
next++;
}
}
#else
if (!plat_data->env_variable)
plat_data->env_variable = "reboot-mode";
#endif
return 0;
}
UCLASS_DRIVER(reboot_mode) = {
.name = "reboot-mode",
.id = UCLASS_REBOOT_MODE,
.pre_probe = dm_reboot_mode_pre_probe,
.per_device_plat_auto =
sizeof(struct reboot_mode_uclass_platdata),
};
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