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/* SPDX-License-Identifier: GPL-2.0-only */
/* This file is part of the coreboot project. */
#include <acpi/acpi.h>
#include <acpi/acpi_device.h>
#include <acpi/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 MAX98927_ACPI_NAME "MAXI"
#define MAX98927_ACPI_HID "MX98927"
static void max98927_fill_ssdt(const struct device *dev)
{
struct drivers_i2c_max98927_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)
return;
/* Device */
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", MAX98927_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");
acpi_dp_add_integer(dp, "interleave_mode", config->interleave_mode);
acpi_dp_add_integer(dp, "vmon-slot-no", config->vmon_slot_no);
acpi_dp_add_integer(dp, "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 *max98927_acpi_name(const struct device *dev)
{
struct drivers_i2c_max98927_config *config = dev->chip_info;
if (config->name)
return config->name;
return MAX98927_ACPI_NAME;
}
static struct device_operations max98927_ops = {
.read_resources = noop_read_resources,
.set_resources = noop_set_resources,
.acpi_name = max98927_acpi_name,
.acpi_fill_ssdt = max98927_fill_ssdt,
};
static void max98927_enable(struct device *dev)
{
struct drivers_i2c_max98927_config *config = dev->chip_info;
dev->ops = &max98927_ops;
if (config && config->desc) {
dev->name = config->desc;
}
}
struct chip_operations drivers_i2c_max98927_ops = {
CHIP_NAME("Maxim MAX98927 Codec")
.enable_dev = max98927_enable
};
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