linux-kernel - [PATCH AUTOSEL 6.3 06/24] ASoC: tegra: Support coupled mic-hp detection

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Date:   Sat,  6 May 2023 20:30:02 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Svyatoslav Ryhel <clamor95@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, lgirdwood@...il.com,
        perex@...ex.cz, tiwai@...e.com, thierry.reding@...il.com,
        jonathanh@...dia.com, jiapeng.chong@...ux.alibaba.com,
        ion@...rria.com, robh@...nel.org, alsa-devel@...a-project.org,
        linux-tegra@...r.kernel.org
Subject: [PATCH AUTOSEL 6.3 06/24] ASoC: tegra: Support coupled mic-hp detection

From: Svyatoslav Ryhel <clamor95@...il.com>

[ Upstream commit eb0b8481c2e03a5ae01f6bea60b42109bd12b6fe ]

This quirk is used for cases when there is GPIO which detects
any type of 3.5 Jack insertion and actual type of jack is defined
by other GPIO. 3.5 Jack GPIO generates interrupt and MIC GPIO
indicates type of Jack only if 3.5 Jack GPIO is active.

Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
Link: https://lore.kernel.org/r/20230308073502.5421-3-clamor95@gmail.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 sound/soc/tegra/tegra_asoc_machine.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/sound/soc/tegra/tegra_asoc_machine.c b/sound/soc/tegra/tegra_asoc_machine.c
index 78faa8bcae274..7b6d5d90c3a2d 100644
--- a/sound/soc/tegra/tegra_asoc_machine.c
+++ b/sound/soc/tegra/tegra_asoc_machine.c
@@ -51,6 +51,17 @@ static struct snd_soc_jack_gpio tegra_machine_headset_jack_gpio = {
 };
 
 /* Mic Jack */
+static int coupled_mic_hp_check(void *data)
+{
+	struct tegra_machine *machine = (struct tegra_machine *)data;
+
+	/* Detect mic insertion only if 3.5 jack is in */
+	if (gpiod_get_value_cansleep(machine->gpiod_hp_det) &&
+	    gpiod_get_value_cansleep(machine->gpiod_mic_det))
+		return SND_JACK_MICROPHONE;
+
+	return 0;
+}
 
 static struct snd_soc_jack tegra_machine_mic_jack;
 
@@ -183,8 +194,15 @@ int tegra_asoc_machine_init(struct snd_soc_pcm_runtime *rtd)
 			return err;
 		}
 
+		tegra_machine_mic_jack_gpio.data = machine;
 		tegra_machine_mic_jack_gpio.desc = machine->gpiod_mic_det;
 
+		if (of_property_read_bool(card->dev->of_node,
+					  "nvidia,coupled-mic-hp-det")) {
+			tegra_machine_mic_jack_gpio.desc = machine->gpiod_hp_det;
+			tegra_machine_mic_jack_gpio.jack_status_check = coupled_mic_hp_check;
+		};
+
 		err = snd_soc_jack_add_gpios(&tegra_machine_mic_jack, 1,
 					     &tegra_machine_mic_jack_gpio);
 		if (err)
-- 
2.39.2