1// SPDX-License-Identifier: GPL-2.0-only
2//
3// Copyright(c) 2021-2022 Intel Corporation. All rights reserved.
4//
5// Authors: Cezary Rojewski <cezary.rojewski@intel.com>
6//          Amadeusz Slawinski <amadeuszx.slawinski@linux.intel.com>
7//
8
9#include <linux/device.h>
10#include <linux/module.h>
11#include <sound/soc.h>
12#include <sound/soc-acpi.h>
13
14SND_SOC_DAILINK_DEF(dmic_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC Pin")));
15SND_SOC_DAILINK_DEF(dmic_wov_pin, DAILINK_COMP_ARRAY(COMP_CPU("DMIC WoV Pin")));
16SND_SOC_DAILINK_DEF(dmic_codec, DAILINK_COMP_ARRAY(COMP_CODEC("dmic-codec", "dmic-hifi")));
17/* Name overridden on probe */
18SND_SOC_DAILINK_DEF(platform, DAILINK_COMP_ARRAY(COMP_PLATFORM("")));
19
20static struct snd_soc_dai_link card_dai_links[] = {
21	/* Back ends */
22	{
23		.name = "DMIC",
24		.id = 0,
25		.dpcm_capture = 1,
26		.nonatomic = 1,
27		.no_pcm = 1,
28		SND_SOC_DAILINK_REG(dmic_pin, dmic_codec, platform),
29	},
30	{
31		.name = "DMIC WoV",
32		.id = 1,
33		.dpcm_capture = 1,
34		.nonatomic = 1,
35		.no_pcm = 1,
36		.ignore_suspend = 1,
37		SND_SOC_DAILINK_REG(dmic_wov_pin, dmic_codec, platform),
38	},
39};
40
41static const struct snd_soc_dapm_widget card_widgets[] = {
42	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
43};
44
45static const struct snd_soc_dapm_route card_routes[] = {
46	{"DMic", NULL, "SoC DMIC"},
47};
48
49static int avs_dmic_probe(struct platform_device *pdev)
50{
51	struct snd_soc_acpi_mach *mach;
52	struct snd_soc_card *card;
53	struct device *dev = &pdev->dev;
54	int ret;
55
56	mach = dev_get_platdata(dev);
57
58	card = devm_kzalloc(dev, sizeof(*card), GFP_KERNEL);
59	if (!card)
60		return -ENOMEM;
61
62	card->name = "avs_dmic";
63	card->dev = dev;
64	card->owner = THIS_MODULE;
65	card->dai_link = card_dai_links;
66	card->num_links = ARRAY_SIZE(card_dai_links);
67	card->dapm_widgets = card_widgets;
68	card->num_dapm_widgets = ARRAY_SIZE(card_widgets);
69	card->dapm_routes = card_routes;
70	card->num_dapm_routes = ARRAY_SIZE(card_routes);
71	card->fully_routed = true;
72
73	ret = snd_soc_fixup_dai_links_platform_name(card, mach->mach_params.platform);
74	if (ret)
75		return ret;
76
77	return devm_snd_soc_register_card(dev, card);
78}
79
80static struct platform_driver avs_dmic_driver = {
81	.probe = avs_dmic_probe,
82	.driver = {
83		.name = "avs_dmic",
84		.pm = &snd_soc_pm_ops,
85	},
86};
87
88module_platform_driver(avs_dmic_driver);
89
90MODULE_LICENSE("GPL");
91MODULE_ALIAS("platform:avs_dmic");
92