ASoC: mediatek: mt7986: add machine driver with wm8960

Add support for mt7986 board with wm8960.

Signed-off-by: Maso Huang <maso.huang@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20230817101338.18782-5-maso.huang@mediatek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/mediatek/Kconfig

@@ -64,6 +64,16 @@ config SND_SOC_MT7986
 	  Select Y if you have such device.
 	  If unsure select "N".
 
+config SND_SOC_MT7986_WM8960
+	tristate "ASoc Audio driver for MT7986 with WM8960 codec"
+	depends on SND_SOC_MT7986 && I2C
+	select SND_SOC_WM8960
+	help
+	  This adds support for ASoC machine driver for MediaTek MT7986
+	  boards with the WM8960 codecs.
+	  Select Y if you have such device.
+	  If unsure select "N".
+
 config SND_SOC_MT8173
 	tristate "ASoC support for Mediatek MT8173 chip"
 	depends on ARCH_MEDIATEK

sound/soc/mediatek/mt7986/Makefile

@@ -6,3 +6,4 @@ snd-soc-mt7986-afe-objs := \
 	mt7986-dai-etdm.o
 
 obj-$(CONFIG_SND_SOC_MT7986) += snd-soc-mt7986-afe.o
+obj-$(CONFIG_SND_SOC_MT7986_WM8960) += mt7986-wm8960.o

sound/soc/mediatek/mt7986/mt7986-wm8960.c

@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * mt7986-wm8960.c  --  MT7986-WM8960 ALSA SoC machine driver
+ *
+ * Copyright (c) 2023 MediaTek Inc.
+ * Authors: Vic Wu <vic.wu@mediatek.com>
+ *          Maso Huang <maso.huang@mediatek.com>
+ */
+
+#include <linux/module.h>
+#include <sound/soc.h>
+
+#include "mt7986-afe-common.h"
+
+struct mt7986_wm8960_priv {
+	struct device_node *platform_node;
+	struct device_node *codec_node;
+};
+
+static const struct snd_soc_dapm_widget mt7986_wm8960_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("AMIC", NULL),
+};
+
+static const struct snd_kcontrol_new mt7986_wm8960_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+	SOC_DAPM_PIN_SWITCH("AMIC"),
+};
+
+SND_SOC_DAILINK_DEFS(playback,
+	DAILINK_COMP_ARRAY(COMP_CPU("DL1")),
+	DAILINK_COMP_ARRAY(COMP_DUMMY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(capture,
+	DAILINK_COMP_ARRAY(COMP_CPU("UL1")),
+	DAILINK_COMP_ARRAY(COMP_DUMMY()),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+SND_SOC_DAILINK_DEFS(codec,
+	DAILINK_COMP_ARRAY(COMP_CPU("ETDM")),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8960-hifi")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link mt7986_wm8960_dai_links[] = {
+	/* FE */
+	{
+		.name = "wm8960-playback",
+		.stream_name = "wm8960-playback",
+		.trigger = {SND_SOC_DPCM_TRIGGER_POST,
+			    SND_SOC_DPCM_TRIGGER_POST},
+		.dynamic = 1,
+		.dpcm_playback = 1,
+		SND_SOC_DAILINK_REG(playback),
+	},
+	{
+		.name = "wm8960-capture",
+		.stream_name = "wm8960-capture",
+		.trigger = {SND_SOC_DPCM_TRIGGER_POST,
+			    SND_SOC_DPCM_TRIGGER_POST},
+		.dynamic = 1,
+		.dpcm_capture = 1,
+		SND_SOC_DAILINK_REG(capture),
+	},
+	/* BE */
+	{
+		.name = "wm8960-codec",
+		.no_pcm = 1,
+		.dai_fmt = SND_SOC_DAIFMT_I2S |
+			SND_SOC_DAIFMT_NB_NF |
+			SND_SOC_DAIFMT_CBS_CFS |
+			SND_SOC_DAIFMT_GATED,
+		.dpcm_playback = 1,
+		.dpcm_capture = 1,
+		SND_SOC_DAILINK_REG(codec),
+	},
+};
+
+static struct snd_soc_card mt7986_wm8960_card = {
+	.name = "mt7986-wm8960",
+	.owner = THIS_MODULE,
+	.dai_link = mt7986_wm8960_dai_links,
+	.num_links = ARRAY_SIZE(mt7986_wm8960_dai_links),
+	.controls = mt7986_wm8960_controls,
+	.num_controls = ARRAY_SIZE(mt7986_wm8960_controls),
+	.dapm_widgets = mt7986_wm8960_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(mt7986_wm8960_widgets),
+};
+
+static int mt7986_wm8960_machine_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &mt7986_wm8960_card;
+	struct snd_soc_dai_link *dai_link;
+	struct device_node *platform, *codec;
+	struct mt7986_wm8960_priv *priv;
+	int ret, i;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	platform = of_get_child_by_name(pdev->dev.of_node, "platform");
+
+	if (platform) {
+		priv->platform_node = of_parse_phandle(platform, "sound-dai", 0);
+		of_node_put(platform);
+
+		if (!priv->platform_node) {
+			dev_err(&pdev->dev, "Failed to parse platform/sound-dai property\n");
+			return -EINVAL;
+		}
+	} else {
+		dev_err(&pdev->dev, "Property 'platform' missing or invalid\n");
+		return -EINVAL;
+	}
+
+	for_each_card_prelinks(card, i, dai_link) {
+		if (dai_link->platforms->name)
+			continue;
+		dai_link->platforms->of_node = priv->platform_node;
+	}
+
+	card->dev = &pdev->dev;
+
+	codec = of_get_child_by_name(pdev->dev.of_node, "codec");
+
+	if (codec) {
+		priv->codec_node = of_parse_phandle(codec, "sound-dai", 0);
+		of_node_put(codec);
+
+		if (!priv->codec_node) {
+			of_node_put(priv->platform_node);
+			dev_err(&pdev->dev, "Failed to parse codec/sound-dai property\n");
+			return -EINVAL;
+		}
+	} else {
+		of_node_put(priv->platform_node);
+		dev_err(&pdev->dev, "Property 'codec' missing or invalid\n");
+		return -EINVAL;
+	}
+
+	for_each_card_prelinks(card, i, dai_link) {
+		if (dai_link->codecs->name)
+			continue;
+		dai_link->codecs->of_node = priv->codec_node;
+	}
+
+	ret = snd_soc_of_parse_audio_routing(card, "audio-routing");
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to parse audio-routing: %d\n", ret);
+		goto err_of_node_put;
+	}
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret) {
+		dev_err(&pdev->dev, "%s snd_soc_register_card fail: %d\n", __func__, ret);
+		goto err_of_node_put;
+	}
+
+err_of_node_put:
+	of_node_put(priv->codec_node);
+	of_node_put(priv->platform_node);
+	return ret;
+}
+
+static void mt7986_wm8960_machine_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct mt7986_wm8960_priv *priv = snd_soc_card_get_drvdata(card);
+
+	of_node_put(priv->codec_node);
+	of_node_put(priv->platform_node);
+}
+
+static const struct of_device_id mt7986_wm8960_machine_dt_match[] = {
+	{.compatible = "mediatek,mt7986-wm8960-sound"},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, mt7986_wm8960_machine_dt_match);
+
+static struct platform_driver mt7986_wm8960_machine = {
+	.driver = {
+		.name = "mt7986-wm8960",
+		.of_match_table = mt7986_wm8960_machine_dt_match,
+	},
+	.probe = mt7986_wm8960_machine_probe,
+	.remove_new = mt7986_wm8960_machine_remove,
+};
+
+module_platform_driver(mt7986_wm8960_machine);
+
+/* Module information */
+MODULE_DESCRIPTION("MT7986 WM8960 ALSA SoC machine driver");
+MODULE_AUTHOR("Vic Wu <vic.wu@mediatek.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("mt7986 wm8960 soc card");