ASoC: Intel: bxt_da7219_max98357a: Map missing Line Out jack kcontrol

Commit bbdd4ea2 ("ASoC: Intel: bxt_da7219_max98357a: remap jack
pins") maps kcontrols for Headphone and Headset Mic jacks for this
driver so that PulseAudio and PipeWire can handle detection events for
these peripherals.

The DA7219 codec used here can also distinguish between Headphone and
Line Out connections that go into the same physical port. Expose the
latter to userspace as a kcontrol as well and add the necessary widgets.
Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Link: https://lore.kernel.org/r/20230802175737.263412-7-alpernebiyasak@gmail.comSigned-off-by: Mark Brown <broonie@kernel.org>

sound/soc/intel/boards/bxt_da7219_max98357a.c

@@ -90,6 +90,7 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w,
 static const struct snd_kcontrol_new broxton_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Line Out"),
 };
 
 static const struct snd_kcontrol_new max98357a_controls[] = {
@@ -104,6 +105,7 @@ static const struct snd_kcontrol_new max98390_controls[] = {
 static const struct snd_soc_dapm_widget broxton_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_LINE("Line Out", NULL),
 	SND_SOC_DAPM_MIC("SoC DMIC", NULL),
 	SND_SOC_DAPM_SPK("HDMI1", NULL),
 	SND_SOC_DAPM_SPK("HDMI2", NULL),
@@ -150,6 +152,7 @@ static const struct snd_soc_dapm_route audio_map[] = {
 
 	{ "Headphone Jack", NULL, "Platform Clock" },
 	{ "Headset Mic", NULL, "Platform Clock" },
+	{ "Line Out", NULL, "Platform Clock" },
 };
 
 static const struct snd_soc_dapm_route max98357a_routes[] = {
@@ -194,6 +197,10 @@ static struct snd_soc_jack_pin jack_pins[] = {
 		.pin    = "Headset Mic",
 		.mask   = SND_JACK_MICROPHONE,
 	},
+	{
+		.pin    = "Line Out",
+		.mask   = SND_JACK_LINEOUT,
+	},
 };
 
 static int broxton_ssp_fixup(struct snd_soc_pcm_runtime *rtd,