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

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source code of linux/sound/soc/mediatek/mt7986/mt7986-wm8960.c