src/mainboard/intel/kunimitsu/mainboard.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2007-2009 coresystems GmbH
 * Copyright (C) 2013 Google Inc.
 * Copyright (C) 2015 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 <console/console.h>
#include <device/device.h>
#include <gpio.h>
#include <stdlib.h>
#include <string.h>
#include <soc/nhlt.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "ec.h"
#include "gpio.h"

static const char *oem_id_maxim = "INTEL";
static const char *oem_table_id_maxim = "SCRDMAX";

static void mainboard_init(device_t dev)
{
	mainboard_ec_init();
}

static uint8_t select_audio_codec(void)
{
	int audio_db_sel = gpio_get(AUDIO_DB_ID);

	return audio_db_sel;
}

static unsigned long mainboard_write_acpi_tables(
	device_t device, unsigned long current, acpi_rsdp_t *rsdp)
{
		uintptr_t start_addr;
		uintptr_t end_addr;
		struct nhlt *nhlt;
		const char *oem_id = NULL;
		const char *oem_table_id = NULL;

		start_addr = current;

		nhlt = nhlt_init();

		if (nhlt == NULL)
			return start_addr;

		/* 2 Channel DMIC array. */
		if (nhlt_soc_add_dmic_array(nhlt, 2))
			printk(BIOS_ERR, "Couldn't add 2CH DMIC array.\n");


		/* 4 Channel DMIC array. */
		if (nhlt_soc_add_dmic_array(nhlt, 4))
			printk(BIOS_ERR, "Couldn't add 4CH DMIC arrays.\n");

		if (select_audio_codec()) {
			/* ADI Smart Amps for left and right. */
			if (nhlt_soc_add_ssm4567(nhlt, AUDIO_LINK_SSP0))
				printk(BIOS_ERR, "Couldn't add ssm4567.\n");
		} else {
			/* MAXIM Smart Amps for left and right. */
			if (nhlt_soc_add_max98357(nhlt, AUDIO_LINK_SSP0))
				printk(BIOS_ERR, "Couldn't add max98357.\n");

			oem_id = oem_id_maxim;
			oem_table_id = oem_table_id_maxim;
		}

		/* NAU88l25 Headset codec. */
		if (nhlt_soc_add_nau88l25(nhlt, AUDIO_LINK_SSP1))
			printk(BIOS_ERR, "Couldn't add headset codec.\n");

		end_addr = nhlt_soc_serialize_oem_overrides(nhlt, start_addr,
						 oem_id, oem_table_id, 0);

		if (end_addr != start_addr)
			acpi_add_table(rsdp, (void *)start_addr);

		return end_addr;
}

/*
 * mainboard_enable is executed as first thing after
 * enumerate_buses().
 */
static void mainboard_enable(device_t dev)
{
	dev->ops->init = mainboard_init;
	dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
	dev->ops->acpi_inject_dsdt_generator = chromeos_dsdt_generator;
}

struct chip_operations mainboard_ops = {
	.enable_dev = mainboard_enable,
};