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
15 struct mt7986_wm8960_priv {
16 struct device_node *platform_node;
17 struct device_node *codec_node;
18 };
19
20 static 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
25 static const struct snd_kcontrol_new mt7986_wm8960_controls[] = {
26 SOC_DAPM_PIN_SWITCH("Headphone"),
27 SOC_DAPM_PIN_SWITCH("AMIC"),
28 };
29
30 SND_SOC_DAILINK_DEFS(playback,
31 DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
32 DAILINK_COMP_ARRAY(COMP_DUMMY()),
33 DAILINK_COMP_ARRAY(COMP_EMPTY()));
34
35 SND_SOC_DAILINK_DEFS(capture,
36 DAILINK_COMP_ARRAY(COMP_CPU("UL1")),
37 DAILINK_COMP_ARRAY(COMP_DUMMY()),
38 DAILINK_COMP_ARRAY(COMP_EMPTY()));
39
40 SND_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
45 static 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
79 static 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
mt7986_wm8960_machine_probe(struct platform_device * pdev)90 static 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
160 err_of_node_put:
161 of_node_put(priv->codec_node);
162 of_node_put(priv->platform_node);
163 return ret;
164 }
165
mt7986_wm8960_machine_remove(struct platform_device * pdev)166 static 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
175 static const struct of_device_id mt7986_wm8960_machine_dt_match[] = {
176 {.compatible = "mediatek,mt7986-wm8960-sound"},
177 { /* sentinel */ }
178 };
179 MODULE_DEVICE_TABLE(of, mt7986_wm8960_machine_dt_match);
180
181 static 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
190 module_platform_driver(mt7986_wm8960_machine);
191
192 /* Module information */
193 MODULE_DESCRIPTION("MT7986 WM8960 ALSA SoC machine driver");
194 MODULE_AUTHOR("Vic Wu <vic.wu@mediatek.com>");
195 MODULE_LICENSE("GPL");
196 MODULE_ALIAS("mt7986 wm8960 soc card");
197