linux-kernel - [PATCH 4/6] ASoC: mediatek: mt8186-da7219: Expose individual headset jack pins

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Date:   Thu, 22 Sep 2022 19:59:49 -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>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        "chunxu.li" <chunxu.li@...iatek.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mediatek@...ts.infradead.org
Subject: [PATCH 4/6] ASoC: mediatek: mt8186-da7219: Expose individual headset jack pins

The da7219 codec is able to distinguish between two event types:
headphone insertion/removal and headset microphone insertion/removal.
However, currently, the mt8186-da7219 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>
---

 .../mt8186/mt8186-mt6366-da7219-max98357.c      | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/sound/soc/mediatek/mt8186/mt8186-mt6366-da7219-max98357.c b/sound/soc/mediatek/mt8186/mt8186-mt6366-da7219-max98357.c
index 8d428bc4a3b2..cfca6bdee834 100644
--- a/sound/soc/mediatek/mt8186/mt8186-mt6366-da7219-max98357.c
+++ b/sound/soc/mediatek/mt8186/mt8186-mt6366-da7219-max98357.c
@@ -37,6 +37,18 @@ struct mt8186_mt6366_da7219_max98357_priv {
 	struct snd_soc_jack headset_jack, hdmi_jack;
 };
 
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin mt8186_jack_pins[] = {
+	{
+		.pin = "Headphones",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
 static struct snd_soc_codec_conf mt8186_mt6366_da7219_max98357_codec_conf[] = {
 	{
 		.dlc = COMP_CODEC_CONF("mt6358-sound"),
@@ -72,11 +84,12 @@ static int mt8186_da7219_init(struct snd_soc_pcm_runtime *rtd)
 	}
 
 	/* Enable Headset and 4 Buttons Jack detection */
-	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 | SND_JACK_LINEOUT,
-				    jack);
+				    jack, mt8186_jack_pins,
+				    ARRAY_SIZE(mt8186_jack_pins));
 	if (ret) {
 		dev_err(rtd->dev, "Headset Jack creation failed: %d\n", ret);
 		return ret;
-- 
2.37.3