From: Jonas Schwöbel <jonasschwoebel@yahoo.de>

Add Wolfson Microelectronics WM8962 codec support to the Tegra ASoC
machine driver. The WM8962 codec is found on devices like Microsoft
Surface RT and Microsoft Surface 2 Windows RT based tablets.

Co-developed-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Jonas Schwöbel <jonasschwoebel@yahoo.de>
---
 sound/soc/tegra/Kconfig        |  10 ++
 sound/soc/tegra/Makefile       |   2 +
 sound/soc/tegra/tegra_wm8962.c | 165 +++++++++++++++++++++++++++++++++
 3 files changed, 177 insertions(+)
 create mode 100644 sound/soc/tegra/tegra_wm8962.c

diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig
index f9257830daa1..56a2f53df2c1 100644
--- a/sound/soc/tegra/Kconfig
+++ b/sound/soc/tegra/Kconfig
@@ -229,6 +229,16 @@ config SND_SOC_TEGRA_WM8903
 	  boards using the WM8093 codec. Currently, the supported boards are
 	  Harmony, Ventana, Seaboard, Kaen, and Aebl.
 
+config SND_SOC_TEGRA_WM8962
+	tristate "SoC Audio support for Tegra boards using a WM8962 codec"
+	depends on I2C && GPIOLIB
+	select SND_SOC_TEGRA_MACHINE_DRV
+	select SND_SOC_WM8962
+	help
+	  Say Y or M here if you want to add support for SoC audio on Tegra
+	  boards using the WM8962 codec. Currently, the supported boards are
+	  Microsoft Surface RT.
+
 config SND_SOC_TEGRA_WM9712
 	tristate "SoC Audio support for Tegra boards using a WM9712 codec"
 	depends on GPIOLIB
diff --git a/sound/soc/tegra/Makefile b/sound/soc/tegra/Makefile
index defea7f53f11..3f396c87802e 100644
--- a/sound/soc/tegra/Makefile
+++ b/sound/soc/tegra/Makefile
@@ -43,9 +43,11 @@ obj-$(CONFIG_SND_SOC_TEGRA210_OPE) += snd-soc-tegra210-ope.o
 
 # Tegra machine Support
 snd-soc-tegra-wm8903-y := tegra_wm8903.o
+snd-soc-tegra-wm8962-y := tegra_wm8962.o
 snd-soc-tegra-machine-y := tegra_asoc_machine.o
 snd-soc-tegra-audio-graph-card-y := tegra_audio_graph_card.o
 
 obj-$(CONFIG_SND_SOC_TEGRA_WM8903) += snd-soc-tegra-wm8903.o
+obj-$(CONFIG_SND_SOC_TEGRA_WM8962) += snd-soc-tegra-wm8962.o
 obj-$(CONFIG_SND_SOC_TEGRA_MACHINE_DRV) += snd-soc-tegra-machine.o
 obj-$(CONFIG_SND_SOC_TEGRA_AUDIO_GRAPH_CARD) += snd-soc-tegra-audio-graph-card.o
diff --git a/sound/soc/tegra/tegra_wm8962.c b/sound/soc/tegra/tegra_wm8962.c
new file mode 100644
index 000000000000..31f9d9181595
--- /dev/null
+++ b/sound/soc/tegra/tegra_wm8962.c
@@ -0,0 +1,165 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * tegra_wm8962.c - Tegra machine ASoC driver for boards using WM8962 codec.
+ *
+ * Copyright (C) 2021-2024 Jonas Schwöbel <jonasschwoebel@yahoo.de>
+ *			   Svyatoslav Ryhel <clamor95@gmail.com>
+ *
+ * Based on tegra_wm8903 code copyright/by:
+ *
+ * Author: Stephen Warren <swarren@nvidia.com>
+ * Copyright (C) 2010-2012 - NVIDIA, Inc.
+ *
+ * Based on code copyright/by:
+ *
+ * (c) 2009, 2010 Nvidia Graphics Pvt. Ltd.
+ *
+ * Copyright 2007 Wolfson Microelectronics PLC.
+ * Author: Graeme Gregory
+ *         graeme.gregory@wolfsonmicro.com or linux@wolfsonmicro.com
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/of.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <sound/core.h>
+#include <sound/jack.h>
+#include <sound/soc.h>
+
+#include "../codecs/wm8962.h"
+
+#include "tegra_asoc_machine.h"
+
+static struct snd_soc_jack_pin tegra_wm8962_mic_jack_pins[] = {
+	{ .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE },
+};
+
+static unsigned int tegra_wm8962_mclk_rate(unsigned int srate)
+{
+	unsigned int mclk;
+
+	switch (srate) {
+	case 8000:
+	case 16000:
+	case 24000:
+	case 32000:
+	case 48000:
+	case 64000:
+	case 96000:
+		mclk = 12288000;
+		break;
+	case 11025:
+	case 22050:
+	case 44100:
+	case 88200:
+		mclk = 11289600;
+		break;
+	default:
+		mclk = 12000000;
+		break;
+	}
+
+	return mclk;
+}
+
+static int tegra_wm8962_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct tegra_machine *machine = snd_soc_card_get_drvdata(rtd->card);
+	struct snd_soc_card *card = rtd->card;
+	struct snd_soc_dapm_context *dapm = snd_soc_card_to_dapm(card);
+	int err;
+
+	err = tegra_asoc_machine_init(rtd);
+	if (err)
+		return err;
+
+	if (!machine->gpiod_mic_det && machine->asoc->add_mic_jack) {
+		struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+		struct snd_soc_component *component = codec_dai->component;
+
+		err = snd_soc_card_jack_new_pins(rtd->card, "Mic Jack",
+						 SND_JACK_MICROPHONE,
+						 machine->mic_jack,
+						 tegra_wm8962_mic_jack_pins,
+						 ARRAY_SIZE(tegra_wm8962_mic_jack_pins));
+		if (err) {
+			dev_err(rtd->dev, "Mic Jack creation failed: %d\n", err);
+			return err;
+		}
+
+		wm8962_mic_detect(component, machine->mic_jack);
+	}
+
+	snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
+
+	return 0;
+}
+
+static int tegra_wm8962_remove(struct snd_soc_card *card)
+{
+	struct snd_soc_dai_link *link = &card->dai_link[0];
+	struct snd_soc_pcm_runtime *rtd = snd_soc_get_pcm_runtime(card, link);
+	struct snd_soc_dai *codec_dai = snd_soc_rtd_to_codec(rtd, 0);
+	struct snd_soc_component *component = codec_dai->component;
+
+	wm8962_mic_detect(component, NULL);
+
+	return 0;
+}
+
+SND_SOC_DAILINK_DEFS(wm8962_hifi,
+	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+	DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8962")),
+	DAILINK_COMP_ARRAY(COMP_EMPTY()));
+
+static struct snd_soc_dai_link tegra_wm8962_dai = {
+	.name = "WM8962",
+	.stream_name = "WM8962 PCM",
+	.init = tegra_wm8962_init,
+	.dai_fmt = SND_SOC_DAIFMT_I2S |
+		   SND_SOC_DAIFMT_NB_NF |
+		   SND_SOC_DAIFMT_CBC_CFC,
+	SND_SOC_DAILINK_REG(wm8962_hifi),
+};
+
+static struct snd_soc_card snd_soc_tegra_wm8962 = {
+	.components = "codec:wm8962",
+	.owner = THIS_MODULE,
+	.dai_link = &tegra_wm8962_dai,
+	.num_links = 1,
+	.remove = tegra_wm8962_remove,
+	.fully_routed = true,
+};
+
+static const struct tegra_asoc_data tegra_wm8962_data = {
+	.mclk_rate = tegra_wm8962_mclk_rate,
+	.card = &snd_soc_tegra_wm8962,
+	.add_common_dapm_widgets = true,
+	.add_common_controls = true,
+	.add_common_snd_ops = true,
+	.add_mic_jack = true,
+	.add_hp_jack = true,
+};
+
+static const struct of_device_id tegra_wm8962_of_match[] = {
+	{ .compatible = "nvidia,tegra-audio-wm8962", .data = &tegra_wm8962_data },
+	{},
+};
+MODULE_DEVICE_TABLE(of, tegra_wm8962_of_match);
+
+static struct platform_driver tegra_wm8962_driver = {
+	.driver = {
+		.name = "tegra-wm8962",
+		.of_match_table = tegra_wm8962_of_match,
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = tegra_asoc_machine_probe,
+};
+module_platform_driver(tegra_wm8962_driver);
+
+MODULE_AUTHOR("Jonas Schwöbel <jonasschwoebel@yahoo.de>");
+MODULE_AUTHOR("Svyatoslav Ryhel <clamor95@gmail.com>");
+MODULE_DESCRIPTION("Tegra+WM8962 machine ASoC driver");
+MODULE_LICENSE("GPL");
-- 
2.51.0

Hi Svyatoslav,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tegra/for-next]
[also build test WARNING on broonie-sound/for-next robh/for-next linus/master v6.16-rc1 next-20260130]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Svyatoslav-Ryhel/ASoC-dt-bindings-nvidia-tegra-audio-document-CPCAP-CODEC/20260130-214002
base:   https://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux.git for-next
patch link:    https://lore.kernel.org/r/20260130133434.353353-5-clamor95%40gmail.com
patch subject: [PATCH v1 4/4] ASoC: tegra: Support WM8962 by machine driver
config: alpha-kismet-CONFIG_SND_SOC_WM8962-CONFIG_SND_SOC_TEGRA_WM8962-0-0 (https://download.01.org/0day-ci/archive/20260130/202601302334.FZthipoJ-lkp@intel.com/config)
reproduce: (https://download.01.org/0day-ci/archive/20260130/202601302334.FZthipoJ-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202601302334.FZthipoJ-lkp@intel.com/

kismet warnings: (new ones prefixed by >>)
>> kismet: WARNING: unmet direct dependencies detected for SND_SOC_WM8962 when selected by SND_SOC_TEGRA_WM8962
   WARNING: unmet direct dependencies detected for SND_SOC_WM8962
     Depends on [n]: SOUND [=y] && SND [=y] && SND_SOC [=y] && I2C [=y] && INPUT [=n]
     Selected by [y]:
     - SND_SOC_TEGRA_WM8962 [=y] && SOUND [=y] && SND [=y] && SND_SOC [=y] && SND_SOC_TEGRA [=y] && I2C [=y] && GPIOLIB [=y]

-- 
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https://github.com/intel/lkp-tests/wiki