soc_sdw_rt_dmic.c

 1// SPDX-License-Identifier: GPL-2.0-only
 2// This file incorporates work covered by the following copyright notice:
 3// Copyright (c) 2024 Intel Corporation
 4// Copyright (c) 2024 Advanced Micro Devices, Inc.
 5
 6/*
 7 * soc_sdw_rt_dmic - Helpers to handle Realtek SDW DMIC from generic machine driver
 8 */
 9
10#include <linux/device.h>
11#include <linux/errno.h>
12#include <sound/soc.h>
13#include <sound/soc-acpi.h>
14#include <sound/soc_sdw_utils.h>
15
16int asoc_sdw_rt_dmic_rtd_init(struct snd_soc_pcm_runtime *rtd, struct snd_soc_dai *dai)
17{
18	struct snd_soc_card *card = rtd->card;
19	struct snd_soc_component *component;
20	char *mic_name;
21
22	component = dai->component;
23
24	/*
25	 * rt715-sdca (aka rt714) is a special case that uses different name in card->components
26	 * and component->name_prefix.
27	 */
28	if (!strcmp(component->name_prefix, "rt714"))
29		mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "rt715-sdca");
30	else
31		mic_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s", component->name_prefix);
32	if (!mic_name)
33		return -ENOMEM;
34
35	card->components = devm_kasprintf(card->dev, GFP_KERNEL,
36					  "%s mic:%s", card->components,
37					  mic_name);
38	if (!card->components)
39		return -ENOMEM;
40
41	dev_dbg(card->dev, "card->components: %s\n", card->components);
42
43	return 0;
44}
45EXPORT_SYMBOL_NS(asoc_sdw_rt_dmic_rtd_init, "SND_SOC_SDW_UTILS");