soc/intel/apollolake: add initial NHLT support

Provide the initial NHLT support for the following hardware:

1. 2 channel digital microphone array
2. Dialog 7219 headset
3. Maxim 98357 speaker amplifiers.

The code utilizes the Intel SoC common NHLT support.

Change-Id: Ic31e834a08f29c66512a7a63ad7bb35e0374e86a
Signed-off-by: Saurabh Satija <saurabh.satija@intel.com>
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15504
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins)

1 files changed, 142 insertions, 0 deletions

diff --git a/src/soc/intel/apollolake/nhlt.c b/src/soc/intel/apollolake/nhlt.c
new file mode 100644
index 0000000000..3670a13264
--- /dev/null
+++ b/src/soc/intel/apollolake/nhlt.c
@@ -0,0 +1,142 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Intel Corp.
+ *
+ * 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 <console/console.h>
+#include <nhlt.h>
+#include <soc/nhlt.h>
+
+static const struct nhlt_format_config dmic_2ch_formats[] = {
+	/* 48 KHz 16-bits per sample. */
+	{
+		.num_channels = 2,
+		.sample_freq_khz = 48,
+		.container_bits_per_sample = 16,
+		.valid_bits_per_sample = 16,
+		.settings_file = "dmic-2ch-48khz-16b.bin",
+	},
+};
+
+static const struct nhlt_dmic_array_config dmic_2ch_mic_config = {
+	.tdm_config = {
+		.config_type = NHLT_TDM_MIC_ARRAY,
+	},
+	.array_type = NHLT_MIC_ARRAY_2CH_SMALL,
+};
+
+static const struct nhlt_endp_descriptor dmic_2ch_descriptors[] = {
+	{
+		.link = NHLT_LINK_PDM,
+		.device = NHLT_PDM_DEV,
+		.direction = NHLT_DIR_CAPTURE,
+		.vid = NHLT_VID,
+		.did = NHLT_DID_DMIC,
+		.cfg = &dmic_2ch_mic_config,
+		.cfg_size = sizeof(dmic_2ch_mic_config),
+		.formats = dmic_2ch_formats,
+		.num_formats = ARRAY_SIZE(dmic_2ch_formats),
+	},
+};
+
+static const struct nhlt_format_config da7219_formats[] = {
+	/* 48 KHz 24-bits per sample. */
+	{
+		.num_channels = 2,
+		.sample_freq_khz = 48,
+		.container_bits_per_sample = 32,
+		.valid_bits_per_sample = 24,
+		.settings_file = "dialog-2ch-48khz-24b.bin",
+	},
+};
+
+static const struct nhlt_tdm_config tdm_config = {
+	.virtual_slot = 0,
+	.config_type = NHLT_TDM_BASIC,
+};
+
+static const struct nhlt_endp_descriptor da7219_descriptors[] = {
+	/* Render Endpoint */
+	{
+		.link = NHLT_LINK_SSP,
+		.device = NHLT_SSP_DEV_I2S,
+		.direction = NHLT_DIR_RENDER,
+		.vid = NHLT_VID,
+		.did = NHLT_DID_SSP,
+		.cfg = &tdm_config,
+		.cfg_size = sizeof(tdm_config),
+		.formats = da7219_formats,
+		.num_formats = ARRAY_SIZE(da7219_formats),
+	},
+	/* Capture Endpoint */
+	{
+		.link = NHLT_LINK_SSP,
+		.device = NHLT_SSP_DEV_I2S,
+		.direction = NHLT_DIR_CAPTURE,
+		.vid = NHLT_VID,
+		.did = NHLT_DID_SSP,
+		.cfg = &tdm_config,
+		.cfg_size = sizeof(tdm_config),
+		.formats = da7219_formats,
+		.num_formats = ARRAY_SIZE(da7219_formats),
+	},
+};
+
+static const struct nhlt_format_config max98357_formats[] = {
+	/* 48 KHz 24-bits per sample. */
+	{
+		.num_channels = 2,
+		.sample_freq_khz = 48,
+		.container_bits_per_sample = 32,
+		.valid_bits_per_sample = 24,
+		.settings_file = "max98357-render-2ch-48khz-24b.bin",
+	},
+};
+
+static const struct nhlt_endp_descriptor max98357_descriptors[] = {
+	{
+		.link = NHLT_LINK_SSP,
+		.device = NHLT_SSP_DEV_I2S,
+		.direction = NHLT_DIR_RENDER,
+		.vid = NHLT_VID,
+		.did = NHLT_DID_SSP,
+		.formats = max98357_formats,
+		.num_formats = ARRAY_SIZE(max98357_formats),
+	},
+};
+
+int nhlt_soc_add_dmic_array(struct nhlt *nhlt, int num_channels)
+{
+	if (num_channels != 2) {
+		printk(BIOS_ERR, "APL only supports 2CH DMIC array.\n");
+		return -1;
+	}
+
+	return nhlt_add_endpoints(nhlt, dmic_2ch_descriptors,
+				ARRAY_SIZE(dmic_2ch_descriptors));
+}
+
+int nhlt_soc_add_da7219(struct nhlt *nhlt, int hwlink)
+{
+	/* Virtual bus id of SSP links are the hardware port ids proper. */
+	return nhlt_add_ssp_endpoints(nhlt, hwlink, da7219_descriptors,
+					ARRAY_SIZE(da7219_descriptors));
+}
+
+int nhlt_soc_add_max98357(struct nhlt *nhlt, int hwlink)
+{
+	/* Virtual bus id of SSP links are the hardware port ids proper. */
+	return nhlt_add_ssp_endpoints(nhlt, hwlink, max98357_descriptors,
+					ARRAY_SIZE(max98357_descriptors));
+}