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/*
* This file is part of the coreboot project.
*
* Copyright 2016 Google Inc.
*
* 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 <string.h>
#include "chip.h"
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
#define NAU8825_ACPI_NAME "NAU8"
#define NAU8825_ACPI_HID "10508825"
#define NAU8825_DP_INT(key,val) \
acpi_dp_add_integer(dp, "nuvoton," key, (val))
static void nau8825_fill_ssdt(struct device *dev)
{
struct drivers_i2c_nau8825_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 = NULL;
if (!dev->enabled || !scope)
return;
if (config->sar_threshold_num > NAU8825_MAX_BUTTONS)
return;
/* Device */
acpigen_write_scope(scope);
acpigen_write_device(acpi_device_name(dev));
acpigen_write_name_string("_HID", NAU8825_ACPI_HID);
acpigen_write_name_integer("_UID", 0);
acpigen_write_name_string("_DDN", dev->chip_ops->name);
acpigen_write_STA(acpi_device_status(dev));
/* Resources */
acpigen_write_name("_CRS");
acpigen_write_resourcetemplate_header();
acpi_device_write_i2c(&i2c);
acpi_device_write_interrupt(&config->irq);
acpigen_write_resourcetemplate_footer();
/* Device Properties */
dp = acpi_dp_new_table("_DSD");
NAU8825_DP_INT("jkdet-enable", config->jkdet_enable);
NAU8825_DP_INT("jkdet-pull-enable", config->jkdet_pull_enable);
NAU8825_DP_INT("jkdet-pull-up", config->jkdet_pull_up);
NAU8825_DP_INT("jkdet-polarity", config->jkdet_polarity);
NAU8825_DP_INT("vref-impedance", config->vref_impedance);
NAU8825_DP_INT("micbias-voltage", config->micbias_voltage);
NAU8825_DP_INT("sar-hysteresis", config->sar_hysteresis);
NAU8825_DP_INT("sar-voltage", config->sar_voltage);
NAU8825_DP_INT("sar-compare-time", config->sar_compare_time);
NAU8825_DP_INT("sar-sampling-time", config->sar_sampling_time);
NAU8825_DP_INT("short-key-debounce", config->short_key_debounce);
NAU8825_DP_INT("jack-insert-debounce", config->jack_insert_debounce);
NAU8825_DP_INT("jack-eject-deboune", config->jack_eject_debounce);
NAU8825_DP_INT("sar-threshold-num", config->sar_threshold_num);
acpi_dp_add_integer_array(dp, "nuvoton,sar-threshold",
config->sar_threshold, config->sar_threshold_num);
acpi_dp_write(dp);
acpigen_pop_len(); /* Device */
acpigen_pop_len(); /* Scope */
printk(BIOS_INFO, "%s: %s address 0%xh irq %d\n",
acpi_device_path(dev), dev->chip_ops->name,
dev->path.i2c.device, config->irq.pin);
}
static const char *nau8825_acpi_name(const struct device *dev)
{
return NAU8825_ACPI_NAME;
}
#endif
static struct device_operations nau8825_ops = {
.read_resources = DEVICE_NOOP,
.set_resources = DEVICE_NOOP,
.enable_resources = DEVICE_NOOP,
#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
.acpi_name = &nau8825_acpi_name,
.acpi_fill_ssdt_generator = &nau8825_fill_ssdt,
#endif
};
static void nau8825_enable(struct device *dev)
{
dev->ops = &nau8825_ops;
}
struct chip_operations drivers_i2c_nau8825_ops = {
CHIP_NAME("Nuvoton NAU8825 Codec")
.enable_dev = &nau8825_enable
};
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