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/*
* This file is part of the coreboot project.
*
* Copyright 2018 Google LLC
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <arch/acpi_device.h>
#include <arch/acpigen.h>
#include <console/console.h>
#include <device/device.h>
#include <device/path.h>
#include <stdint.h>
#include <string.h>
#include "chip.h"
static void generic_dev_fill_ssdt_generator(struct device *dev)
{
struct acpi_dp *dsd;
struct drivers_generic_generic_config *config = dev->chip_info;
if (!dev->enabled || !config)
return;
if (!config->hid) {
printk(BIOS_ERR, "%s: ERROR: _HID required\n", dev_path(dev));
return;
}
acpigen_write_scope(acpi_device_scope(dev));
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", config->hid);
if (config->cid)
acpigen_write_name_string("_CID", config->cid);
acpigen_write_name_integer("_UID", config->uid);
acpigen_write_name_string("_DDN", config->desc);
acpigen_write_STA(acpi_device_status(dev));
dsd = acpi_dp_new_table("_DSD");
acpi_dp_add_property_list(dsd, config->property_list,
config->property_count);
acpi_dp_write(dsd);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev),
config->desc ? : dev->chip_ops->name, dev_path(dev));
}
static char *generic_autogen_name(struct drivers_generic_generic_config *config)
{
char *name = &config->autogen_name[0];
static unsigned int id;
if (name[0] != '\0')
return name;
snprintf(name, sizeof(name), "G%03.3X", id++);
name[4] = '\0';
return name;
}
static const char *generic_dev_acpi_name(const struct device *dev)
{
struct drivers_generic_generic_config *config = dev->chip_info;
if (config->name)
return config->name;
return generic_autogen_name(config);
}
static struct device_operations generic_dev_ops = {
.read_resources = DEVICE_NOOP,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
.acpi_name = generic_dev_acpi_name,
.acpi_fill_ssdt_generator = generic_dev_fill_ssdt_generator,
};
static void generic_dev_enable(struct device *dev)
{
dev->ops = &generic_dev_ops;
}
struct chip_operations drivers_generic_generic_ops = {
CHIP_NAME("Generic Device")
.enable_dev = generic_dev_enable
};
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