Contributors: 7
Author Tokens Token Proportion Commits Commit Proportion
Derek Fang 155 44.41% 1 8.33%
Bard Liao 92 26.36% 4 33.33%
Pierre-Louis Bossart 79 22.64% 2 16.67%
Chenyuan Yang 9 2.58% 1 8.33%
Vijendar Mukunda 8 2.29% 2 16.67%
Charles Keepax 5 1.43% 1 8.33%
Peter Zijlstra 1 0.29% 1 8.33%
Total 349 12 


// 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");