mainboard/intel/amenia: add NHLT support

Add ACPI NHLT table generation that the current hardware
supports as well select the hardware used on the board.

Amenia has support for two audio codecs, Dialog for
headsets and Maxim for speakers.

Change-Id: Iaba9ec81ffb4f128f2e4413dec5174d9ecb856c9
Signed-off-by: Saurabh Satija <saurabh.satija@intel.com>
Reviewed-on: https://review.coreboot.org/15024
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/mainboard/intel/amenia/Kconfig

@@ -44,4 +44,10 @@ config MAX_CPUS
 	int
 	default 8
 
+config INCLUDE_NHLT_BLOBS
+	bool "Include blobs for audio."
+	select NHLT_DMIC_2CH_16B
+	select NHLT_DA7219
+	select NHLT_MAX98357
+
 endif # BOARD_INTEL_AMENIA

src/mainboard/intel/amenia/dsdt.asl

@@ -1,7 +1,7 @@
 /*
  * This file is part of the coreboot project.
  *
- * Copyright (C) 2015 Intel Corp.
+ * Copyright (C) 2016 Intel Corp.
  * (Written by Lance Zhao <lijian.zhao@intel.com> for Intel Corp.)
  *
  * This program is free software; you can redistribute it and/or modify
@@ -33,15 +33,16 @@ DefinitionBlock(
 	Scope (\_SB) {
 		Device (PCI0)
 		{
-                #include <soc/intel/apollolake/acpi/northbridge.asl>
-                #include <soc/intel/apollolake/acpi/southbridge.asl>
+			#include <soc/intel/apollolake/acpi/northbridge.asl>
+			#include <soc/intel/apollolake/acpi/southbridge.asl>
+			#include <soc/intel/apollolake/acpi/pch_hda.asl>
 		}
 	}
 	/* Mainboard Specific devices */
 	#include "acpi/mainboard.asl"
 
-        /* Chipset specific sleep states */
-        #include <soc/intel/apollolake/acpi/sleepstates.asl>
+	/* Chipset specific sleep states */
+	#include <soc/intel/apollolake/acpi/sleepstates.asl>
 
 	#include "acpi/superio.asl"
 }

src/mainboard/intel/amenia/mainboard.c

@@ -15,9 +15,10 @@
  * GNU General Public License for more details.
  */
 
+#include <arch/acpi.h>
+#include <console/console.h>
 #include <device/device.h>
-#include <soc/gpio.h>
-#include <soc/pci_devs.h>
+#include <soc/nhlt.h>
 #include "ec.h"
 #include "gpio.h"
 
@@ -27,6 +28,49 @@ static void mainboard_init(void *chip_info)
 	mainboard_ec_init();
 }
 
+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;
+
+	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, "Added 2CH DMIC array.\n");
+
+	/* Dialog for Headset codec.
+	 * Headset codec is bi-directional but uses the same configuration
+	 * settings for render and capture endpoints.
+	 */
+	if (!nhlt_soc_add_da7219(nhlt, AUDIO_LINK_SSP1))
+		printk(BIOS_ERR, "Added Dialog_7219 codec.\n");
+
+	/* MAXIM Smart Amps for left and right speakers. */
+	if (!nhlt_soc_add_max98357(nhlt, AUDIO_LINK_SSP5))
+		printk(BIOS_ERR, "Added Maxim_98357 codec.\n");
+
+	end_addr = nhlt_soc_serialize(nhlt, start_addr);
+
+	if (end_addr != start_addr)
+		acpi_add_table(rsdp, (void *)start_addr);
+
+	return end_addr;
+}
+
+static void mainboard_enable(device_t dev)
+{
+	dev->ops->write_acpi_tables = mainboard_write_acpi_tables;
+}
+
 struct chip_operations mainboard_ops = {
 	.init = mainboard_init,
+	.enable_dev = mainboard_enable,
 };