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