[PATCH 5/7] ASoC: mediatek: mt79xx: add machine driver with wm8960

[Maso Hunag]

From: Maso Huang <maso.huang@xxxxxxxxxxxx>

Add support for mt79xx board with wm8960.

Signed-off-by: Maso Huang <maso.huang@xxxxxxxxxxxx>
---
 sound/soc/mediatek/Kconfig                |  10 ++
 sound/soc/mediatek/mt79xx/Makefile        |   1 +
 sound/soc/mediatek/mt79xx/mt79xx-wm8960.c | 185 ++++++++++++++++++++++
 3 files changed, 196 insertions(+)
 create mode 100644 sound/soc/mediatek/mt79xx/mt79xx-wm8960.c

diff --git a/sound/soc/mediatek/Kconfig b/sound/soc/mediatek/Kconfig
index 192546078d5e..bf641af72210 100644
--- a/sound/soc/mediatek/Kconfig
+++ b/sound/soc/mediatek/Kconfig
@@ -64,6 +64,16 @@ config SND_SOC_MT79XX
 	  Select Y if you have such device.
 	  If unsure select "N".
 
+config SND_SOC_MT79XX_WM8960
+	tristate "ASoc Audio driver for MT79XX with WM8960 codec"
+	depends on SND_SOC_MT79XX && I2C
+	select SND_SOC_WM8960
+	help
+	  This adds support for ASoC machine driver for MediaTek MT79XX
+	  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
diff --git a/sound/soc/mediatek/mt79xx/Makefile b/sound/soc/mediatek/mt79xx/Makefile
index 984b20ae8819..c910ee88d930 100644
--- a/sound/soc/mediatek/mt79xx/Makefile
+++ b/sound/soc/mediatek/mt79xx/Makefile
@@ -7,3 +7,4 @@ snd-soc-mt79xx-afe-objs := \
 	mt79xx-dai-etdm.o
 
 obj-$(CONFIG_SND_SOC_MT79XX) += snd-soc-mt79xx-afe.o
+obj-$(CONFIG_SND_SOC_MT79XX_WM8960) += mt79xx-wm8960.o
diff --git a/sound/soc/mediatek/mt79xx/mt79xx-wm8960.c b/sound/soc/mediatek/mt79xx/mt79xx-wm8960.c
new file mode 100644
index 000000000000..d1a01a2bb6ae
--- /dev/null
+++ b/sound/soc/mediatek/mt79xx/mt79xx-wm8960.c
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * mt79xx-wm8960.c  --  MT79xx-WM8960 ALSA SoC machine driver
+ *
+ * Copyright (c) 2021 MediaTek Inc.
+ * Author: Vic Wu <vic.wu@xxxxxxxxxxxx>
+ *         Maso Huang <maso.huang@xxxxxxxxxxxx>
+ */
+
+#include <linux/module.h>
+#include <sound/soc.h>
+
+#include "mt79xx-afe-common.h"
+
+struct mt79xx_wm8960_priv {
+	struct device_node *platform_node;
+	struct device_node *codec_node;
+};
+
+static const struct snd_soc_dapm_widget mt79xx_wm8960_widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("AMIC", NULL),
+};
+
+static const struct snd_kcontrol_new mt79xx_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 mt79xx_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 mt79xx_wm8960_card = {
+	.name = "mt79xx-wm8960",
+	.owner = THIS_MODULE,
+	.dai_link = mt79xx_wm8960_dai_links,
+	.num_links = ARRAY_SIZE(mt79xx_wm8960_dai_links),
+	.controls = mt79xx_wm8960_controls,
+	.num_controls = ARRAY_SIZE(mt79xx_wm8960_controls),
+	.dapm_widgets = mt79xx_wm8960_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(mt79xx_wm8960_widgets),
+};
+
+static int mt79xx_wm8960_machine_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &mt79xx_wm8960_card;
+	struct snd_soc_dai_link *dai_link;
+	struct mt79xx_wm8960_priv *priv;
+	int ret, i;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	priv->platform_node = of_parse_phandle(pdev->dev.of_node,
+					       "mediatek,platform", 0);
+	if (!priv->platform_node) {
+		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;
+
+	priv->codec_node = of_parse_phandle(pdev->dev.of_node,
+					    "mediatek,audio-codec", 0);
+	if (!priv->codec_node) {
+		dev_err(&pdev->dev,
+			"Property 'audio-codec' missing or invalid\n");
+		of_node_put(priv->platform_node);
+		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 int mt79xx_wm8960_machine_remove(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = platform_get_drvdata(pdev);
+	struct mt79xx_wm8960_priv *priv = snd_soc_card_get_drvdata(card);
+
+	of_node_put(priv->codec_node);
+	of_node_put(priv->platform_node);
+
+	return 0;
+}
+
+#ifdef CONFIG_OF
+static const struct of_device_id mt79xx_wm8960_machine_dt_match[] = {
+	{.compatible = "mediatek,mt79xx-wm8960-machine",},
+	{}
+};
+#endif
+
+static struct platform_driver mt79xx_wm8960_machine = {
+	.driver = {
+		.name = "mt79xx-wm8960",
+#ifdef CONFIG_OF
+		.of_match_table = mt79xx_wm8960_machine_dt_match,
+#endif
+	},
+	.probe = mt79xx_wm8960_machine_probe,
+	.remove = mt79xx_wm8960_machine_remove,
+};
+
+module_platform_driver(mt79xx_wm8960_machine);
+
+/* Module information */
+MODULE_DESCRIPTION("MT79xx WM8960 ALSA SoC machine driver");
+MODULE_AUTHOR("Vic Wu <vic.wu@xxxxxxxxxxxx>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("mt79xx wm8960 soc card");
-- 
2.18.0