1// SPDX-License-Identifier: GPL-2.0
2/*
3 * mt7986-wm8960.c  --  MT7986-WM8960 ALSA SoC machine driver
4 *
5 * Copyright (c) 2023 MediaTek Inc.
6 * Authors: Vic Wu <vic.wu@mediatek.com>
7 *          Maso Huang <maso.huang@mediatek.com>
8 */
9
10#include <linux/module.h>
11#include <sound/soc.h>
12
13#include "mt7986-afe-common.h"
14
15struct mt7986_wm8960_priv {
16	struct device_node *platform_node;
17	struct device_node *codec_node;
18};
19
20static const struct snd_soc_dapm_widget mt7986_wm8960_widgets[] = {
21	SND_SOC_DAPM_HP("Headphone", NULL),
22	SND_SOC_DAPM_MIC("AMIC", NULL),
23};
24
25static const struct snd_kcontrol_new mt7986_wm8960_controls[] = {
26	SOC_DAPM_PIN_SWITCH("Headphone"),
27	SOC_DAPM_PIN_SWITCH("AMIC"),
28};
29
30SND_SOC_DAILINK_DEFS(playback,
31	DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
32	DAILINK_COMP_ARRAY(COMP_DUMMY()),
33	DAILINK_COMP_ARRAY(COMP_EMPTY()));
34
35SND_SOC_DAILINK_DEFS(capture,
36	DAILINK_COMP_ARRAY(COMP_CPU("UL1")),
37	DAILINK_COMP_ARRAY(COMP_DUMMY()),
38	DAILINK_COMP_ARRAY(COMP_EMPTY()));
39
40SND_SOC_DAILINK_DEFS(codec,
41	DAILINK_COMP_ARRAY(COMP_CPU("ETDM")),
42	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")),
43	DAILINK_COMP_ARRAY(COMP_EMPTY()));
44
45static struct snd_soc_dai_link mt7986_wm8960_dai_links[] = {
46	/* FE */
47	{
48		.name = "wm8960-playback",
49		.stream_name = "wm8960-playback",
50		.trigger = {SND_SOC_DPCM_TRIGGER_POST,
51			    SND_SOC_DPCM_TRIGGER_POST},
52		.dynamic = 1,
53		.dpcm_playback = 1,
54		SND_SOC_DAILINK_REG(playback),
55	},
56	{
57		.name = "wm8960-capture",
58		.stream_name = "wm8960-capture",
59		.trigger = {SND_SOC_DPCM_TRIGGER_POST,
60			    SND_SOC_DPCM_TRIGGER_POST},
61		.dynamic = 1,
62		.dpcm_capture = 1,
63		SND_SOC_DAILINK_REG(capture),
64	},
65	/* BE */
66	{
67		.name = "wm8960-codec",
68		.no_pcm = 1,
69		.dai_fmt = SND_SOC_DAIFMT_I2S |
70			SND_SOC_DAIFMT_NB_NF |
71			SND_SOC_DAIFMT_CBS_CFS |
72			SND_SOC_DAIFMT_GATED,
73		.dpcm_playback = 1,
74		.dpcm_capture = 1,
75		SND_SOC_DAILINK_REG(codec),
76	},
77};
78
79static struct snd_soc_card mt7986_wm8960_card = {
80	.name = "mt7986-wm8960",
81	.owner = THIS_MODULE,
82	.dai_link = mt7986_wm8960_dai_links,
83	.num_links = ARRAY_SIZE(mt7986_wm8960_dai_links),
84	.controls = mt7986_wm8960_controls,
85	.num_controls = ARRAY_SIZE(mt7986_wm8960_controls),
86	.dapm_widgets = mt7986_wm8960_widgets,
87	.num_dapm_widgets = ARRAY_SIZE(mt7986_wm8960_widgets),
88};
89
90static int mt7986_wm8960_machine_probe(struct platform_device *pdev)
91{
92	struct snd_soc_card *card = &mt7986_wm8960_card;
93	struct snd_soc_dai_link *dai_link;
94	struct device_node *platform, *codec;
95	struct mt7986_wm8960_priv *priv;
96	int ret, i;
97
98	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
99	if (!priv)
100		return -ENOMEM;
101
102	platform = of_get_child_by_name(pdev->dev.of_node, "platform");
103
104	if (platform) {
105		priv->platform_node = of_parse_phandle(platform, "sound-dai", 0);
106		of_node_put(platform);
107
108		if (!priv->platform_node) {
109			dev_err(&pdev->dev, "Failed to parse platform/sound-dai property\n");
110			return -EINVAL;
111		}
112	} else {
113		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
114		return -EINVAL;
115	}
116
117	for_each_card_prelinks(card, i, dai_link) {
118		if (dai_link->platforms->name)
119			continue;
120		dai_link->platforms->of_node = priv->platform_node;
121	}
122
123	card->dev = &pdev->dev;
124
125	codec = of_get_child_by_name(pdev->dev.of_node, "codec");
126
127	if (codec) {
128		priv->codec_node = of_parse_phandle(codec, "sound-dai", 0);
129		of_node_put(codec);
130
131		if (!priv->codec_node) {
132			of_node_put(priv->platform_node);
133			dev_err(&pdev->dev, "Failed to parse codec/sound-dai property\n");
134			return -EINVAL;
135		}
136	} else {
137		of_node_put(priv->platform_node);
138		dev_err(&pdev->dev, "Property 'codec' missing or invalid\n");
139		return -EINVAL;
140	}
141
142	for_each_card_prelinks(card, i, dai_link) {
143		if (dai_link->codecs->name)
144			continue;
145		dai_link->codecs->of_node = priv->codec_node;
146	}
147
148	ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
149	if (ret) {
150		dev_err(&pdev->dev, "Failed to parse audio-routing: %d\n", ret);
151		goto err_of_node_put;
152	}
153
154	ret = devm_snd_soc_register_card(&pdev->dev, card);
155	if (ret) {
156		dev_err(&pdev->dev, "%s snd_soc_register_card fail: %d\n", __func__, ret);
157		goto err_of_node_put;
158	}
159
160err_of_node_put:
161	of_node_put(priv->codec_node);
162	of_node_put(priv->platform_node);
163	return ret;
164}
165
166static void mt7986_wm8960_machine_remove(struct platform_device *pdev)
167{
168	struct snd_soc_card *card = platform_get_drvdata(pdev);
169	struct mt7986_wm8960_priv *priv = snd_soc_card_get_drvdata(card);
170
171	of_node_put(priv->codec_node);
172	of_node_put(priv->platform_node);
173}
174
175static const struct of_device_id mt7986_wm8960_machine_dt_match[] = {
176	{.compatible = "mediatek,mt7986-wm8960-sound"},
177	{ /* sentinel */ }
178};
179MODULE_DEVICE_TABLE(of, mt7986_wm8960_machine_dt_match);
180
181static struct platform_driver mt7986_wm8960_machine = {
182	.driver = {
183		.name = "mt7986-wm8960",
184		.of_match_table = mt7986_wm8960_machine_dt_match,
185	},
186	.probe = mt7986_wm8960_machine_probe,
187	.remove_new = mt7986_wm8960_machine_remove,
188};
189
190module_platform_driver(mt7986_wm8960_machine);
191
192/* Module information */
193MODULE_DESCRIPTION("MT7986 WM8960 ALSA SoC machine driver");
194MODULE_AUTHOR("Vic Wu <vic.wu@mediatek.com>");
195MODULE_LICENSE("GPL");
196MODULE_ALIAS("mt7986 wm8960 soc card");
197