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Tue, 13 Oct 2026 11:32:39 -0700 (PDT) From: Svyatoslav Ryhel To: Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Thierry Reding , Jonathan Hunter , Jaroslav Kysela , Takashi Iwai , Svyatoslav Ryhel Cc: linux-sound@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 2/2] ASoC: tegra: Support WM8994 by machine driver Date: Tue, 13 Oct 2026 21:32:26 +0300 Message-ID: <20261013183226.513658-3-clamor95@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261013183226.513658-1-clamor95@gmail.com> References: <20261013183226.513658-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add Wolfson Microelectronics WM8994 codec support to the Tegra ASoC machine driver. The WM8994 codec is found on devices like LG Optimus 2X (P990/star) and Samsung Captivate Glide (SGH-i927). Signed-off-by: Svyatoslav Ryhel --- sound/soc/tegra/Kconfig | 10 ++ sound/soc/tegra/Makefile | 2 + sound/soc/tegra/tegra_wm8994.c | 169 +++++++++++++++++++++++++++++++++ 3 files changed, 181 insertions(+) create mode 100644 sound/soc/tegra/tegra_wm8994.c diff --git a/sound/soc/tegra/Kconfig b/sound/soc/tegra/Kconfig index fdc954028d622..dd3b2d3d6c4c9 100644 --- a/sound/soc/tegra/Kconfig +++ b/sound/soc/tegra/Kconfig @@ -239,6 +239,16 @@ config SND_SOC_TEGRA_WM8962 boards using the WM8962 codec. Currently, the supported boards are Microsoft Surface RT. +config SND_SOC_TEGRA_WM8994 + tristate "SoC Audio support for Tegra boards using a WM8994 codec" + depends on I2C && GPIOLIB && MFD_WM8994 + select SND_SOC_TEGRA_MACHINE_DRV + select SND_SOC_WM8994 + help + Say Y or M here if you want to add support for SoC audio on Tegra + boards using the WM8994 codec. Currently, the supported boards are + LG Optimus X2 P990 and Samsung Captivate Glide (SGH-i927). + 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 1c18ef6971c09..b8f90149bfa63 100644 --- a/sound/soc/tegra/Makefile +++ b/sound/soc/tegra/Makefile @@ -43,10 +43,12 @@ obj-$(CONFIG_SND_SOC_TEGRA210_OPE) += snd-soc-tegra210-ope.o # Tegra machine Support snd-soc-tegra-wm8903-y := tegra_wm8903.o snd-soc-tegra-wm8962-y := tegra_wm8962.o +snd-soc-tegra-wm8994-y := tegra_wm8994.o snd-soc-tegra-machine-y := tegra_asoc_machine.o snd-soc-tegra-audio-graph-card-y := tegra_audio_graph_card.o obj-$(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_WM8994) += snd-soc-tegra-wm8994.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_wm8994.c b/sound/soc/tegra/tegra_wm8994.c new file mode 100644 index 0000000000000..950fa6ad388f9 --- /dev/null +++ b/sound/soc/tegra/tegra_wm8994.c @@ -0,0 +1,169 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * tegra_wm8994.c - Tegra machine ASoC driver for boards using WM8994 codec. + * + * Copyright (C) 2026 Svyatoslav Ryhel + * + * Based on tegra_wm8994 code copyright/by: + * + * Author: Sumit Bhattacharya + * Copyright (C) 2010-2011 - 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 +#include +#include +#include + +#include +#include +#include + +#include "../codecs/wm8994.h" + +#include "tegra_asoc_machine.h" + +static struct snd_soc_jack_pin tegra_wm8994_mic_jack_pins[] = { + { .pin = "Mic Jack", .mask = SND_JACK_MICROPHONE }, +}; + +static unsigned int tegra_wm8994_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 const struct snd_kcontrol_new tegra_wm8994_controls[] = { + SOC_DAPM_PIN_SWITCH("Int Spk"), + SOC_DAPM_PIN_SWITCH("Internal Mic 1"), + SOC_DAPM_PIN_SWITCH("Internal Mic 2"), + SOC_DAPM_PIN_SWITCH("Mic Jack"), + SOC_DAPM_PIN_SWITCH("Line Out"), + SOC_DAPM_PIN_SWITCH("FM Radio"), +}; + +static int tegra_wm8994_init(struct snd_soc_pcm_runtime *rtd) +{ + struct tegra_machine *machine = snd_soc_card_get_drvdata(rtd->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_wm8994_mic_jack_pins, + ARRAY_SIZE(tegra_wm8994_mic_jack_pins)); + if (err) { + dev_err(rtd->dev, "Mic Jack creation failed: %d\n", err); + return err; + } + + wm8994_mic_detect(component, machine->mic_jack, 1); + } + + return 0; +} + +static int tegra_wm8994_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; + + wm8994_mic_detect(component, NULL, 0); + + return 0; +} + +SND_SOC_DAILINK_DEFS(wm8994_hifi, + DAILINK_COMP_ARRAY(COMP_EMPTY()), + DAILINK_COMP_ARRAY(COMP_CODEC(NULL, "wm8994-aif1")), + DAILINK_COMP_ARRAY(COMP_EMPTY())); + +static struct snd_soc_dai_link tegra_wm8994_dai = { + .name = "WM8994", + .stream_name = "WM8994 PCM", + .init = tegra_wm8994_init, + .dai_fmt = SND_SOC_DAIFMT_I2S | + SND_SOC_DAIFMT_NB_NF | + SND_SOC_DAIFMT_CBC_CFC, + SND_SOC_DAILINK_REG(wm8994_hifi), +}; + +static struct snd_soc_card snd_soc_tegra_wm8994 = { + .components = "codec:wm8994", + .dai_link = &tegra_wm8994_dai, + .num_links = 1, + .controls = tegra_wm8994_controls, + .num_controls = ARRAY_SIZE(tegra_wm8994_controls), + .remove = tegra_wm8994_remove, + .fully_routed = true, +}; + +static const struct tegra_asoc_data tegra_wm8994_data = { + .mclk_rate = tegra_wm8994_mclk_rate, + .mclk_id = WM8994_SYSCLK_MCLK1, + .card = &snd_soc_tegra_wm8994, + .add_common_dapm_widgets = true, + .add_common_snd_ops = true, + .add_mic_jack = true, + .add_hp_jack = true, +}; + +static const struct of_device_id tegra_wm8994_of_match[] = { + { .compatible = "nvidia,tegra-audio-wm8994", .data = &tegra_wm8994_data }, + { }, +}; +MODULE_DEVICE_TABLE(of, tegra_wm8994_of_match); + +static struct platform_driver tegra_wm8994_driver = { + .driver = { + .name = "tegra-wm8994", + .of_match_table = tegra_wm8994_of_match, + .pm = &snd_soc_pm_ops, + }, + .probe = tegra_asoc_machine_probe, +}; +module_platform_driver(tegra_wm8994_driver); + +MODULE_AUTHOR("Svyatoslav Ryhel "); +MODULE_DESCRIPTION("Tegra+WM8994 machine ASoC driver"); +MODULE_LICENSE("GPL"); -- 2.53.0