mt7986-wm8960.c

  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		.playback_only = 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		.capture_only = 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_CBC_CFC |
 67			SND_SOC_DAIFMT_GATED,
 68		SND_SOC_DAILINK_REG(codec),
 69	},
 70};
 71
 72static struct snd_soc_card mt7986_wm8960_card = {
 73	.name = "mt7986-wm8960",
 74	.owner = THIS_MODULE,
 75	.dai_link = mt7986_wm8960_dai_links,
 76	.num_links = ARRAY_SIZE(mt7986_wm8960_dai_links),
 77	.controls = mt7986_wm8960_controls,
 78	.num_controls = ARRAY_SIZE(mt7986_wm8960_controls),
 79	.dapm_widgets = mt7986_wm8960_widgets,
 80	.num_dapm_widgets = ARRAY_SIZE(mt7986_wm8960_widgets),
 81};
 82
 83static int mt7986_wm8960_machine_probe(struct platform_device *pdev)
 84{
 85	struct snd_soc_card *card = &mt7986_wm8960_card;
 86	struct snd_soc_dai_link *dai_link;
 87	struct device_node *platform, *codec;
 88	struct device_node *platform_dai_node, *codec_dai_node;
 89	int ret, i;
 90
 91	card->dev = &pdev->dev;
 92
 93	platform = of_get_child_by_name(pdev->dev.of_node, "platform");
 94
 95	if (platform) {
 96		platform_dai_node = of_parse_phandle(platform, "sound-dai", 0);
 97		of_node_put(platform);
 98
 99		if (!platform_dai_node) {
100			dev_err(&pdev->dev, "Failed to parse platform/sound-dai property\n");
101			return -EINVAL;
102		}
103	} else {
104		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
105		return -EINVAL;
106	}
107
108	for_each_card_prelinks(card, i, dai_link) {
109		if (dai_link->platforms->name)
110			continue;
111		dai_link->platforms->of_node = platform_dai_node;
112	}
113
114	codec = of_get_child_by_name(pdev->dev.of_node, "codec");
115
116	if (codec) {
117		codec_dai_node = of_parse_phandle(codec, "sound-dai", 0);
118		of_node_put(codec);
119
120		if (!codec_dai_node) {
121			of_node_put(platform_dai_node);
122			dev_err(&pdev->dev, "Failed to parse codec/sound-dai property\n");
123			return -EINVAL;
124		}
125	} else {
126		of_node_put(platform_dai_node);
127		dev_err(&pdev->dev, "Property 'codec' missing or invalid\n");
128		return -EINVAL;
129	}
130
131	for_each_card_prelinks(card, i, dai_link) {
132		if (dai_link->codecs->name)
133			continue;
134		dai_link->codecs->of_node = codec_dai_node;
135	}
136
137	ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
138	if (ret) {
139		dev_err(&pdev->dev, "Failed to parse audio-routing: %d\n", ret);
140		goto err_of_node_put;
141	}
142
143	ret = devm_snd_soc_register_card(&pdev->dev, card);
144	if (ret) {
145		dev_err_probe(&pdev->dev, ret, "%s snd_soc_register_card fail\n", __func__);
146		goto err_of_node_put;
147	}
148
149err_of_node_put:
150	of_node_put(platform_dai_node);
151	of_node_put(codec_dai_node);
152	return ret;
153}
154
155static const struct of_device_id mt7986_wm8960_machine_dt_match[] = {
156	{.compatible = "mediatek,mt7986-wm8960-sound"},
157	{ /* sentinel */ }
158};
159MODULE_DEVICE_TABLE(of, mt7986_wm8960_machine_dt_match);
160
161static struct platform_driver mt7986_wm8960_machine = {
162	.driver = {
163		.name = "mt7986-wm8960",
164		.of_match_table = mt7986_wm8960_machine_dt_match,
165	},
166	.probe = mt7986_wm8960_machine_probe,
167};
168
169module_platform_driver(mt7986_wm8960_machine);
170
171/* Module information */
172MODULE_DESCRIPTION("MT7986 WM8960 ALSA SoC machine driver");
173MODULE_AUTHOR("Vic Wu <vic.wu@mediatek.com>");
174MODULE_LICENSE("GPL");
175MODULE_ALIAS("mt7986 wm8960 soc card");