From d0508b4f16049a658d68a7c276ba08296c5a76bc Mon Sep 17 00:00:00 2001
From: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Date: Tue, 21 Jul 2020 21:27:10 +0300
Subject: [PATCH] ASoC: rk3399_gru_sound: Add DAPM pins, kcontrols for jack detection
Git-commit: d0508b4f16049a658d68a7c276ba08296c5a76bc
Patch-mainline: v5.9-rc1
References: jsc#SLE-16518

PulseAudio (and perhaps other userspace utilities) can not detect any
jack for rk3399_gru_sound as the driver doesn't expose related Jack
kcontrols.

This patch adds two DAPM pins to the headset jack, where the
snd_soc_card_jack_new() call automatically creates "Headphones Jack" and
"Headset Mic Jack" kcontrols from them.

With an appropriate ALSA UCM config specifying JackControl fields for
the "Headphones" and "Headset" (mic) devices, PulseAudio can detect
plug/unplug events for both of them after this patch.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Link: https://lore.kernel.org/r/20200721182709.6895-1-alpernebiyasak@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 sound/soc/rockchip/rk3399_gru_sound.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/sound/soc/rockchip/rk3399_gru_sound.c b/sound/soc/rockchip/rk3399_gru_sound.c
index 66d17089793f..e2d52d8d0ff9 100644
--- a/sound/soc/rockchip/rk3399_gru_sound.c
+++ b/sound/soc/rockchip/rk3399_gru_sound.c
@@ -32,6 +32,19 @@ static unsigned int dmic_wakeup_delay;
 
 static struct snd_soc_jack rockchip_sound_jack;
 
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin rockchip_sound_jack_pins[] = {
+	{
+		.pin = "Headphones",
+		.mask = SND_JACK_HEADPHONE,
+	},
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+
+};
+
 static const struct snd_soc_dapm_widget rockchip_dapm_widgets[] = {
 	SND_SOC_DAPM_HP("Headphones", NULL),
 	SND_SOC_DAPM_SPK("Speakers", NULL),
@@ -176,7 +189,9 @@ static int rockchip_sound_da7219_init(struct snd_soc_pcm_runtime *rtd)
 				    SND_JACK_HEADSET | SND_JACK_LINEOUT |
 				    SND_JACK_BTN_0 | SND_JACK_BTN_1 |
 				    SND_JACK_BTN_2 | SND_JACK_BTN_3,
-				    &rockchip_sound_jack, NULL, 0);
+				    &rockchip_sound_jack,
+				    rockchip_sound_jack_pins,
+				    ARRAY_SIZE(rockchip_sound_jack_pins));
 
 	if (ret) {
 		dev_err(rtd->card->dev, "New Headset Jack failed! (%d)\n", ret);
-- 
2.16.4