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/*
* This file is part of the coreboot project.
*
* Copyright 2015 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 <soc/nhlt.h>
#include <string.h>
static const struct nhlt_format_config dmic_2ch_cfg[] = {
/* 48 KHz 16-bits per sample. */
{
.num_channels = 2,
.sample_freq_khz = 48,
.container_bits_per_sample = 16,
.valid_bits_per_sample = 16,
.speaker_mask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT,
.settings_file = "dmic-2ch-48khz-16b.bin",
},
/* 48 KHz 32-bits per sample. */
{
.num_channels = 2,
.sample_freq_khz = 48,
.container_bits_per_sample = 32,
.valid_bits_per_sample = 32,
.speaker_mask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT,
.settings_file = "dmic-2ch-48khz-32b.bin",
},
};
static const struct nhlt_format_config dmic_4ch_cfg[] = {
/* 48 KHz 16-bits per sample. */
{
.num_channels = 4,
.sample_freq_khz = 48,
.container_bits_per_sample = 16,
.valid_bits_per_sample = 16,
.speaker_mask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT |
SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT,
.settings_file = "dmic-4ch-48khz-16b.bin",
},
/* 48 KHz 32-bits per sample. */
{
.num_channels = 4,
.sample_freq_khz = 48,
.container_bits_per_sample = 32,
.valid_bits_per_sample = 32,
.speaker_mask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT |
SPEAKER_BACK_LEFT | SPEAKER_BACK_RIGHT,
.settings_file = "dmic-4ch-48khz-32b.bin",
},
};
int nhlt_soc_add_dmic_array(struct nhlt *nhlt, int num_channels)
{
struct nhlt_endpoint *endp;
struct nhlt_dmic_array_config mic_config;
const struct nhlt_format_config *formats;
size_t num_formats;
if (num_channels != 2 && num_channels != 4)
return -1;
endp = nhlt_soc_add_endpoint(nhlt, AUDIO_LINK_DMIC, AUDIO_DEV_DMIC,
NHLT_DIR_CAPTURE);
if (endp == NULL)
return -1;
memset(&mic_config, 0, sizeof(mic_config));
mic_config.tdm_config.config_type = NHLT_TDM_MIC_ARRAY;
switch (num_channels) {
case 2:
formats = dmic_2ch_cfg;
num_formats = ARRAY_SIZE(dmic_2ch_cfg);
mic_config.array_type = NHLT_MIC_ARRAY_2CH_SMALL;
break;
case 4:
formats = dmic_4ch_cfg;
num_formats = ARRAY_SIZE(dmic_4ch_cfg);
mic_config.array_type = NHLT_MIC_ARRAY_4CH_L_SHAPED;
break;
default:
return -1;
}
if (nhlt_endpoint_append_config(endp, &mic_config, sizeof(mic_config)))
return -1;
return nhlt_endpoint_add_formats(endp, formats, num_formats);
}
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