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ASoC: tegra: Support WM8962 by machine driver

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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>
Link: https://patch.msgid.link/20260223065051.13070-5-clamor95@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jonas Schwöbel
2026-03-01 23:48:31 +00:00
committed by Mark Brown
parent 79d73f5a0b
commit 536ffa105e
3 changed files with 177 additions and 0 deletions
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sound/soc/tegra/Kconfig
+10
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@@ -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 && INPUT && 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
sound/soc/tegra/Makefile
+2
View File
@@ -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
sound/soc/tegra/tegra_wm8962.c
+165
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@@ -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");