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/*
* This file is part of the coreboot project.
*
* Copyright 2017 Intel Corporation.
*
* 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.h>
#include <arch/acpi_device.h>
#include <arch/acpigen.h>
#include <console/console.h>
#include <device/i2c_simple.h>
#include <device/device.h>
#include <device/path.h>
#include <stdint.h>
#include "chip.h"
#define MAX98373_ACPI_NAME "MAXI"
#define MAX98373_ACPI_HID "MX98373"
static void max98373_fill_ssdt(struct device *dev)
{
struct drivers_i2c_max98373_config *config = dev->chip_info;
const char *scope = acpi_device_scope(dev);
struct acpi_i2c i2c = {
.address = dev->path.i2c.device,
.mode_10bit = dev->path.i2c.mode_10bit,
.speed = config->bus_speed ? : I2C_SPEED_FAST,
.resource = scope,
};
struct acpi_dp *dp;
if (!dev->enabled || !scope) {
printk(BIOS_ERR, "%s: dev not enabled", __func__);
return;
}
/* Device */
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", MAX98373_ACPI_HID);
acpigen_write_name_integer("_UID", config->uid);
if (config->desc)
acpigen_write_name_string("_DDN", config->desc);
acpigen_write_STA(acpi_device_status(dev));
/* Resources */
acpigen_write_name("_CRS");
acpigen_write_resourcetemplate_header();
acpi_device_write_i2c(&i2c);
acpigen_write_resourcetemplate_footer();
/* Device Properties */
dp = acpi_dp_new_table("_DSD");
if (config->interleave_mode)
acpi_dp_add_integer(dp, "maxim,interleave_mode",
config->interleave_mode);
acpi_dp_add_integer(dp, "maxim,vmon-slot-no", config->vmon_slot_no);
acpi_dp_add_integer(dp, "maxim,imon-slot-no", config->imon_slot_no);
acpi_dp_write(dp);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s address 0%xh\n", acpi_device_path(dev),
dev->chip_ops->name, dev->path.i2c.device);
}
static const char *max98373_acpi_name(const struct device *dev)
{
struct drivers_i2c_max98373_config *config = dev->chip_info;
if (config->name)
return config->name;
return MAX98373_ACPI_NAME;
}
static struct device_operations max98373_ops = {
.read_resources = DEVICE_NOOP,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
.acpi_name = max98373_acpi_name,
.acpi_fill_ssdt_generator = max98373_fill_ssdt,
};
static void max98373_enable(struct device *dev)
{
struct drivers_i2c_max98373_config *config = dev->chip_info;
dev->ops = &max98373_ops;
if (config && config->desc) {
dev->name = config->desc;
}
}
struct chip_operations drivers_i2c_max98373_ops = {
CHIP_NAME("Maxim MAX98373 Codec")
.enable_dev = max98373_enable
};
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