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// SPDX-License-Identifier: GPL-2.0+
/*
* Core driver model support for ACPI table generation
*
* Copyright 2019 Google LLC
* Written by Simon Glass <sjg@chromium.org>
*/
#define LOG_CATEOGRY LOGC_ACPI
#include <common.h>
#include <dm.h>
#include <dm/acpi.h>
#include <dm/device-internal.h>
#include <dm/root.h>
/* Type of method to call */
enum method_t {
METHOD_WRITE_TABLES,
};
/* Prototype for all methods */
typedef int (*acpi_method)(const struct udevice *dev, struct acpi_ctx *ctx);
int acpi_copy_name(char *out_name, const char *name)
{
strncpy(out_name, name, ACPI_NAME_LEN);
out_name[ACPI_NAME_LEN] = '\0';
return 0;
}
int acpi_get_name(const struct udevice *dev, char *out_name)
{
struct acpi_ops *aops;
aops = device_get_acpi_ops(dev);
if (aops && aops->get_name)
return aops->get_name(dev, out_name);
return -ENOSYS;
}
acpi_method acpi_get_method(struct udevice *dev, enum method_t method)
{
struct acpi_ops *aops;
aops = device_get_acpi_ops(dev);
if (aops) {
switch (method) {
case METHOD_WRITE_TABLES:
return aops->write_tables;
}
}
return NULL;
}
int acpi_recurse_method(struct acpi_ctx *ctx, struct udevice *parent,
enum method_t method)
{
struct udevice *dev;
acpi_method func;
int ret;
func = acpi_get_method(parent, method);
if (func) {
log_debug("\n");
log_debug("- %s %p\n", parent->name, func);
ret = device_ofdata_to_platdata(parent);
if (ret)
return log_msg_ret("ofdata", ret);
ret = func(parent, ctx);
if (ret)
return log_msg_ret("func", ret);
}
device_foreach_child(dev, parent) {
ret = acpi_recurse_method(ctx, dev, method);
if (ret)
return log_msg_ret("recurse", ret);
}
return 0;
}
int acpi_write_dev_tables(struct acpi_ctx *ctx)
{
int ret;
log_debug("Writing device tables\n");
ret = acpi_recurse_method(ctx, dm_root(), METHOD_WRITE_TABLES);
log_debug("Writing finished, err=%d\n", ret);
return ret;
}
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