linux-kernel - [PATCH 2/6] ASoC: mediatek: mt8195: Expose individual headset jack pins

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Message-Id: <20220922235951.252532-3-nfraprado@collabora.com>
Date:   Thu, 22 Sep 2022 19:59:47 -0400
From:   Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, kernel@...labora.com,
        Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>, Jaroslav Kysela <perex@...ex.cz>,
        Liam Girdwood <lgirdwood@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Takashi Iwai <tiwai@...e.com>,
        Trevor Wu <trevor.wu@...iatek.com>,
        Tzung-Bi Shih <tzungbi@...gle.com>,
        alsa-devel@...a-project.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: [PATCH 2/6] ASoC: mediatek: mt8195: Expose individual headset jack pins

The rt5682 codec is able to distinguish between two event types:
headphone insertion/removal and headset microphone insertion/removal.
However, currently, the mt8195 ASoC driver exposes a single kcontrol
for the headset jack, so userspace isn't able to differentiate between
the two events.

Add a definition for the headset jack pins, so that a separate jack
kcontrol is created for each one, allowing userspace to track and handle
them individually.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>

---

 sound/soc/mediatek/mt8195/mt8195-mt6359.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/sound/soc/mediatek/mt8195/mt8195-mt6359.c b/sound/soc/mediatek/mt8195/mt8195-mt6359.c
index 961e769602d6..17d4c4108a9d 100644
--- a/sound/soc/mediatek/mt8195/mt8195-mt6359.c
+++ b/sound/soc/mediatek/mt8195/mt8195-mt6359.c
@@ -63,6 +63,18 @@ struct mt8195_mt6359_priv {
 	struct clk *i2so1_mclk;
 };
 
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin mt8195_jack_pins[] = {
+	{
+		.pin = "Headphone",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
 static const struct snd_soc_dapm_widget mt8195_mt6359_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
@@ -563,11 +575,12 @@ static int mt8195_rt5682_init(struct snd_soc_pcm_runtime *rtd)
 
 	priv->i2so1_mclk = afe_priv->clk[MT8195_CLK_TOP_APLL12_DIV2];
 
-	ret = snd_soc_card_jack_new(rtd->card, "Headset Jack",
+	ret = snd_soc_card_jack_new_pins(rtd->card, "Headset Jack",
 				    SND_JACK_HEADSET | SND_JACK_BTN_0 |
 				    SND_JACK_BTN_1 | SND_JACK_BTN_2 |
 				    SND_JACK_BTN_3,
-				    jack);
+				    jack, mt8195_jack_pins,
+				    ARRAY_SIZE(mt8195_jack_pins));
 	if (ret) {
 		dev_err(rtd->dev, "Headset Jack creation failed: %d\n", ret);
 		return ret;
-- 
2.37.3