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/* SPDX-License-Identifier: GPL-2.0-or-later */
/* This file is part of the coreboot project. */
#include <acpi/acpi_device.h>
#include <acpi/acpigen.h>
#include <console/console.h>
#include <device/device.h>
#include <device/path.h>
#include <string.h>
#include "chip.h"
#define CROS_EC_I2C_TUNNEL_HID "GOOG0012"
#define CROS_EC_I2C_TUNNEL_DDN "Cros EC I2C Tunnel"
static void crosec_i2c_tunnel_fill_ssdt(struct device *dev)
{
const char *scope = acpi_device_scope(dev);
struct ec_google_chromeec_i2c_tunnel_config *cfg = dev->chip_info;
struct acpi_dp *dsd;
if (!dev->enabled || !scope || !cfg)
return;
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", CROS_EC_I2C_TUNNEL_HID);
acpigen_write_name_integer("_UID", cfg->uid);
acpigen_write_name_string("_DDN", CROS_EC_I2C_TUNNEL_DDN);
acpigen_write_STA(acpi_device_status(dev));
dsd = acpi_dp_new_table("_DSD");
acpi_dp_add_integer(dsd, "google,remote-bus", cfg->remote_bus);
acpi_dp_write(dsd);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), CROS_EC_I2C_TUNNEL_DDN,
dev_path(dev));
}
static const char *crosec_i2c_tunnel_acpi_name(const struct device *dev)
{
struct ec_google_chromeec_i2c_tunnel_config *cfg = dev->chip_info;
static char name[5];
if (cfg->name)
return cfg->name;
snprintf(name, sizeof(name), "TUN%X", dev->path.generic.id);
return name;
}
static struct device_operations crosec_i2c_tunnel_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = crosec_i2c_tunnel_acpi_name,
.acpi_fill_ssdt = crosec_i2c_tunnel_fill_ssdt,
.scan_bus = scan_static_bus,
};
static void crosec_i2c_tunnel_enable(struct device *dev)
{
dev->ops = &crosec_i2c_tunnel_ops;
}
struct chip_operations ec_google_chromeec_i2c_tunnel_ops = {
CHIP_NAME("CrosEC I2C Tunnel Device")
.enable_dev = crosec_i2c_tunnel_enable
};
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