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// SPDX-License-Identifier: GPL-2.0-only
// This file incorporates work covered by the following copyright notice:
// Copyright (c) 2024 Intel Corporation
// Copyright (c) 2024 Advanced Micro Devices, Inc.
/*
* soc_sdw_rt_dmic - Helpers to handle Realtek SDW DMIC from generic machine driver
*/
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/soundwire/sdw.h>
#include <linux/soundwire/sdw_type.h>
#include <sound/soc.h>
#include <sound/soc-acpi.h>
#include <sound/soc_sdw_utils.h>
#include <sound/sdca_function.h>
int asoc_sdw_rt_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
{
struct snd_soc_card *card = rtd->card;
struct snd_soc_component *component;
struct sdw_slave *sdw_peripheral = NULL;
char *mic_name;
int rt1320_dmic_num = 0, part_id, i;
component = dai->component;
/*
* rt715-sdca (aka rt714) is a special case that uses different name in card->components
* and component->name_prefix.
*/
if (!strcmp(component->name_prefix, "rt714"))
mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "rt715-sdca");
else
mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s", component->name_prefix);
if (!mic_name)
return -ENOMEM;
/*
* If there is any rt1320/rt1321 DMIC belonging to this card, try to count the `cfg-mics`
* to be used in card->components.
* Note: The rt1320 drivers register the peripheral dev to component->dev, so get the
* sdw_peripheral from component->dev.
*/
if (is_sdw_slave(component->dev))
sdw_peripheral = dev_to_sdw_dev(component->dev);
if (sdw_peripheral &&
(sdw_peripheral->id.part_id == 0x1320 || sdw_peripheral->id.part_id == 0x1321)) {
part_id = sdw_peripheral->id.part_id;
/*
* This rtd init callback is called once, so count the rt1320/rt1321 with SDCA
* function SmartMic type in this card.
*/
for_each_card_components(card, component) {
if (!is_sdw_slave(component->dev))
continue;
sdw_peripheral = dev_to_sdw_dev(component->dev);
if (sdw_peripheral->id.part_id != part_id)
continue;
for (i = 0; i < sdw_peripheral->sdca_data.num_functions; i++) {
if (sdw_peripheral->sdca_data.function[i].type ==
SDCA_FUNCTION_TYPE_SMART_MIC) {
rt1320_dmic_num++;
break;
}
}
}
card->components = devm_kasprintf(card->dev, GFP_KERNEL,
"%s mic:%s cfg-mics:%d", card->components,
mic_name, rt1320_dmic_num);
} else {
card->components = devm_kasprintf(card->dev, GFP_KERNEL,
"%s mic:%s", card->components,
mic_name);
}
if (!card->components)
return -ENOMEM;
dev_dbg(card->dev, "card->components: %s\n", card->components);
return 0;
}
EXPORT_SYMBOL_NS(asoc_sdw_rt_dmic_rtd_init, "SND_SOC_SDW_UTILS");
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