Merge series "ASoC: Intel/rt5640: Add support for HP Elite Pad 1000G2 jack-detect" from Hans de Goede <hdegoede@redhat.com>:

Changes in v2:
- Rebase on asoc/for-next
- New patch: "ASoC: Intel: bytct_rt5640: Add a separate "Headset Mic 2"
  DAPM pin for the mic on the 2nd jack"
- Addressed Pierre-Louis' comments about calling
  acpi_dev_add_driver_gpios() twice

Original cover-letter:

The HP Elitepad 1000 G2 tablet has 2 headset jacks:

1. on the dock which uses the output of the codecs built-in HP-amp +
the standard IN2 input which is always used with the headset-jack.

2. on the tablet itself, this uses the line-out of the codec + an external
HP-amp, which gets enabled by the ALC5642 codec's GPIO1 pin; and IN1 for
the headset-mic.

The codec's GPIO1 is also its only IRQ output pin, so this means that
the codec's IRQ cannot be used on this tablet. Instead the jack-detect
is connected directly to GPIOs on the main SoC. The dock has a helper
chip which also detects if a headset-mic is present or not, so there
are 2 GPIOs for the jack-detect status of the dock. The tablet jack
uses a single GPIO which indicates if a jack is present or not.

Differentiating between between headphones vs a headset on the tablet jack
is done by using the usual mic-bias over-current-detection mechanism.

Regards,

Hans

Hans de Goede (6):
  ASoC: rt5640: Move rt5640_disable_jack_detect() up in the rt5640.c
    file
  ASoC: rt5640: Delay requesting IRQ until the machine-drv calls
    set_jack
  ASoC: rt5640: Add optional hp_det_gpio parameter to
    rt5640_detect_headset()
  ASoC: rt5640: Add rt5640_set_ovcd_params() helper
  ASoC: Intel: bytct_rt5640: Add a separate "Headset Mic 2" DAPM pin for
    the mic on the 2nd jack
  ASoC: Intel: bytcr_rt5640: Add support for HP Elite Pad 1000G2
    jack-detect

 sound/soc/codecs/rt5640.c             | 136 ++++++++++++----------
 sound/soc/codecs/rt5640.h             |   6 +
 sound/soc/intel/boards/bytcr_rt5640.c | 158 +++++++++++++++++++++++++-
 3 files changed, 234 insertions(+), 66 deletions(-)

--
2.31.1

3 files changed, 234 insertions, 66 deletions

diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 0f5087a7644b..cd1db5caabad 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -2093,7 +2093,7 @@ int rt5640_sel_asrc_clk_src(struct snd_soc_component *component,
 }
 EXPORT_SYMBOL_GPL(rt5640_sel_asrc_clk_src);
 
-static void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component)
+void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 
@@ -2105,8 +2105,9 @@ static void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component)
 	snd_soc_dapm_sync_unlocked(dapm);
 	snd_soc_dapm_mutex_unlock(dapm);
 }
+EXPORT_SYMBOL_GPL(rt5640_enable_micbias1_for_ovcd);
 
-static void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component)
+void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component)
 {
 	struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
 
@@ -2117,6 +2118,7 @@ static void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component
 	snd_soc_dapm_sync_unlocked(dapm);
 	snd_soc_dapm_mutex_unlock(dapm);
 }
+EXPORT_SYMBOL_GPL(rt5640_disable_micbias1_for_ovcd);
 
 static void rt5640_enable_micbias1_ovcd_irq(struct snd_soc_component *component)
 {
@@ -2241,7 +2243,7 @@ static void rt5640_button_press_work(struct work_struct *work)
 	schedule_delayed_work(&rt5640->bp_work, msecs_to_jiffies(BP_POLL_TIME));
 }
 
-static int rt5640_detect_headset(struct snd_soc_component *component)
+int rt5640_detect_headset(struct snd_soc_component *component, struct gpio_desc *hp_det_gpio)
 {
 	int i, headset_count = 0, headphone_count = 0;
 
@@ -2259,8 +2261,13 @@ static int rt5640_detect_headset(struct snd_soc_component *component)
 		msleep(JACK_SETTLE_TIME);
 
 		/* Check the jack is still connected before checking ovcd */
-		if (!rt5640_jack_inserted(component))
-			return 0;
+		if (hp_det_gpio) {
+			if (gpiod_get_value_cansleep(hp_det_gpio))
+				return 0;
+		} else {
+			if (!rt5640_jack_inserted(component))
+				return 0;
+		}
 
 		if (rt5640_micbias1_ovcd(component)) {
 			/*
@@ -2285,6 +2292,7 @@ static int rt5640_detect_headset(struct snd_soc_component *component)
 	dev_err(component->dev, "Error detecting headset vs headphones, bad contact?, assuming headphones\n");
 	return SND_JACK_HEADPHONE;
 }
+EXPORT_SYMBOL_GPL(rt5640_detect_headset);
 
 static void rt5640_jack_work(struct work_struct *work)
 {
@@ -2309,7 +2317,7 @@ static void rt5640_jack_work(struct work_struct *work)
 		/* Jack inserted */
 		WARN_ON(rt5640->ovcd_irq_enabled);
 		rt5640_enable_micbias1_for_ovcd(component);
-		status = rt5640_detect_headset(component);
+		status = rt5640_detect_headset(component, NULL);
 		if (status == SND_JACK_HEADSET) {
 			/* Enable ovcd IRQ for button press detect. */
 			rt5640_enable_micbias1_ovcd_irq(component);
@@ -2362,10 +2370,59 @@ static void rt5640_cancel_work(void *data)
 	cancel_delayed_work_sync(&rt5640->bp_work);
 }
 
+void rt5640_set_ovcd_params(struct snd_soc_component *component)
+{
+	struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component);
+
+	snd_soc_component_write(component, RT5640_PR_BASE + RT5640_BIAS_CUR4,
+		0xa800 | rt5640->ovcd_sf);
+
+	snd_soc_component_update_bits(component, RT5640_MICBIAS,
+		RT5640_MIC1_OVTH_MASK | RT5640_MIC1_OVCD_MASK,
+		rt5640->ovcd_th | RT5640_MIC1_OVCD_EN);
+
+	/*
+	 * The over-current-detect is only reliable in detecting the absence
+	 * of over-current, when the mic-contact in the jack is short-circuited,
+	 * the hardware periodically retries if it can apply the bias-current
+	 * leading to the ovcd status flip-flopping 1-0-1 with it being 0 about
+	 * 10% of the time, as we poll the ovcd status bit we might hit that
+	 * 10%, so we enable sticky mode and when checking OVCD we clear the
+	 * status, msleep() a bit and then check to get a reliable reading.
+	 */
+	snd_soc_component_update_bits(component, RT5640_IRQ_CTRL2,
+		RT5640_MB1_OC_STKY_MASK, RT5640_MB1_OC_STKY_EN);
+}
+EXPORT_SYMBOL_GPL(rt5640_set_ovcd_params);
+
+static void rt5640_disable_jack_detect(struct snd_soc_component *component)
+{
+	struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component);
+
+	/*
+	 * soc_remove_component() force-disables jack and thus rt5640->jack
+	 * could be NULL at the time of driver's module unloading.
+	 */
+	if (!rt5640->jack)
+		return;
+
+	free_irq(rt5640->irq, rt5640);
+	rt5640_cancel_work(rt5640);
+
+	if (rt5640->jack->status & SND_JACK_MICROPHONE) {
+		rt5640_disable_micbias1_ovcd_irq(component);
+		rt5640_disable_micbias1_for_ovcd(component);
+		snd_soc_jack_report(rt5640->jack, 0, SND_JACK_BTN_0);
+	}
+
+	rt5640->jack = NULL;
+}
+
 static void rt5640_enable_jack_detect(struct snd_soc_component *component,
 				      struct snd_soc_jack *jack)
 {
 	struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component);
+	int ret;
 
 	/* Select JD-source */
 	snd_soc_component_update_bits(component, RT5640_JD_CTRL,
@@ -2385,24 +2442,7 @@ static void rt5640_enable_jack_detect(struct snd_soc_component *component,
 	/* Enabling jd2 in general control 2 */
 	snd_soc_component_write(component, RT5640_DUMMY2, 0x4001);
 
-	snd_soc_component_write(component, RT5640_PR_BASE + RT5640_BIAS_CUR4,
-		0xa800 | rt5640->ovcd_sf);
-
-	snd_soc_component_update_bits(component, RT5640_MICBIAS,
-		RT5640_MIC1_OVTH_MASK | RT5640_MIC1_OVCD_MASK,
-		rt5640->ovcd_th | RT5640_MIC1_OVCD_EN);
-
-	/*
-	 * The over-current-detect is only reliable in detecting the absence
-	 * of over-current, when the mic-contact in the jack is short-circuited,
-	 * the hardware periodically retries if it can apply the bias-current
-	 * leading to the ovcd status flip-flopping 1-0-1 with it being 0 about
-	 * 10% of the time, as we poll the ovcd status bit we might hit that
-	 * 10%, so we enable sticky mode and when checking OVCD we clear the
-	 * status, msleep() a bit and then check to get a reliable reading.
-	 */
-	snd_soc_component_update_bits(component, RT5640_IRQ_CTRL2,
-		RT5640_MB1_OC_STKY_MASK, RT5640_MB1_OC_STKY_EN);
+	rt5640_set_ovcd_params(component);
 
 	/*
 	 * All IRQs get or-ed together, so we need the jack IRQ to report 0
@@ -2423,32 +2463,19 @@ static void rt5640_enable_jack_detect(struct snd_soc_component *component,
 		rt5640_enable_micbias1_ovcd_irq(component);
 	}
 
-	enable_irq(rt5640->irq);
-	/* sync initial jack state */
-	queue_work(system_long_wq, &rt5640->jack_work);
-}
-
-static void rt5640_disable_jack_detect(struct snd_soc_component *component)
-{
-	struct rt5640_priv *rt5640 = snd_soc_component_get_drvdata(component);
-
-	/*
-	 * soc_remove_component() force-disables jack and thus rt5640->jack
-	 * could be NULL at the time of driver's module unloading.
-	 */
-	if (!rt5640->jack)
+	ret = request_irq(rt5640->irq, rt5640_irq,
+			  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+			  "rt5640", rt5640);
+	if (ret) {
+		dev_warn(component->dev, "Failed to reguest IRQ %d: %d\n", rt5640->irq, ret);
+		rt5640->irq = -ENXIO;
+		/* Undo above settings */
+		rt5640_disable_jack_detect(component);
 		return;
-
-	disable_irq(rt5640->irq);
-	rt5640_cancel_work(rt5640);
-
-	if (rt5640->jack->status & SND_JACK_MICROPHONE) {
-		rt5640_disable_micbias1_ovcd_irq(component);
-		rt5640_disable_micbias1_for_ovcd(component);
-		snd_soc_jack_report(rt5640->jack, 0, SND_JACK_BTN_0);
 	}
 
-	rt5640->jack = NULL;
+	/* sync initial jack state */
+	queue_work(system_long_wq, &rt5640->jack_work);
 }
 
 static int rt5640_set_jack(struct snd_soc_component *component,
@@ -2836,21 +2863,6 @@ static int rt5640_i2c_probe(struct i2c_client *i2c,
 	if (ret)
 		return ret;
 
-	if (rt5640->irq) {
-		/* enabled by rt5640_set_jack() */
-		ret = devm_request_irq(&i2c->dev, rt5640->irq, rt5640_irq,
-				       IRQF_TRIGGER_RISING | IRQF_NO_AUTOEN |
-				       IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-				       "rt5640", rt5640);
-		if (ret) {
-			dev_err(&i2c->dev, "Failed to request IRQ %d: %d\n",
-				rt5640->irq, ret);
-			return ret;
-		}
-	} else {
-		rt5640->irq = -ENXIO;
-	}
-
 	return devm_snd_soc_register_component(&i2c->dev,
 				      &soc_component_dev_rt5640,
 				      rt5640_dai, ARRAY_SIZE(rt5640_dai));
diff --git a/sound/soc/codecs/rt5640.h b/sound/soc/codecs/rt5640.h
index 4fd47f2b936b..2c28f83e338a 100644
--- a/sound/soc/codecs/rt5640.h
+++ b/sound/soc/codecs/rt5640.h
@@ -10,6 +10,7 @@
 #define _RT5640_H
 
 #include <linux/clk.h>
+#include <linux/gpio/consumer.h>
 #include <linux/workqueue.h>
 #include <dt-bindings/sound/rt5640.h>
 
@@ -2157,4 +2158,9 @@ int rt5640_dmic_enable(struct snd_soc_component *component,
 int rt5640_sel_asrc_clk_src(struct snd_soc_component *component,
 		unsigned int filter_mask, unsigned int clk_src);
 
+void rt5640_set_ovcd_params(struct snd_soc_component *component);
+void rt5640_enable_micbias1_for_ovcd(struct snd_soc_component *component);
+void rt5640_disable_micbias1_for_ovcd(struct snd_soc_component *component);
+int rt5640_detect_headset(struct snd_soc_component *component, struct gpio_desc *hp_det_gpio);
+
 #endif
diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c
index d9e23c793f96..2f151ba80be5 100644
--- a/sound/soc/intel/boards/bytcr_rt5640.c
+++ b/sound/soc/intel/boards/bytcr_rt5640.c
@@ -18,6 +18,8 @@
 #include <linux/clk.h>
 #include <linux/device.h>
 #include <linux/dmi.h>
+#include <linux/gpio/consumer.h>
+#include <linux/gpio/machine.h>
 #include <linux/input.h>
 #include <linux/slab.h>
 #include <sound/pcm.h>
@@ -76,6 +78,7 @@ enum {
 #define BYT_RT5640_LINEOUT		BIT(25)
 #define BYT_RT5640_LINEOUT_AS_HP2	BIT(26)
 #define BYT_RT5640_HSMIC2_ON_IN1	BIT(27)
+#define BYT_RT5640_JD_HP_ELITEP_1000G2	BIT(28)
 
 #define BYTCR_INPUT_DEFAULTS				\
 	(BYT_RT5640_IN3_MAP |				\
@@ -89,6 +92,8 @@ enum {
 
 struct byt_rt5640_private {
 	struct snd_soc_jack jack;
+	struct snd_soc_jack jack2;
+	struct gpio_desc *hsmic_detect;
 	struct clk *mclk;
 	struct device *codec_dev;
 };
@@ -141,6 +146,8 @@ static void log_quirks(struct device *dev)
 	}
 	if (byt_rt5640_quirk & BYT_RT5640_JD_NOT_INV)
 		dev_info(dev, "quirk JD_NOT_INV enabled\n");
+	if (byt_rt5640_quirk & BYT_RT5640_JD_HP_ELITEP_1000G2)
+		dev_info(dev, "quirk JD_HP_ELITEPAD_1000G2 enabled\n");
 	if (byt_rt5640_quirk & BYT_RT5640_MONO_SPEAKER)
 		dev_info(dev, "quirk MONO_SPEAKER enabled\n");
 	if (byt_rt5640_quirk & BYT_RT5640_NO_SPEAKERS)
@@ -324,6 +331,7 @@ static int byt_rt5640_event_lineout(struct snd_soc_dapm_widget *w,
 static const struct snd_soc_dapm_widget byt_rt5640_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone", NULL),
 	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic 2", NULL),
 	SND_SOC_DAPM_MIC("Internal Mic", NULL),
 	SND_SOC_DAPM_SPK("Speaker", NULL),
 	SND_SOC_DAPM_LINE("Line Out", byt_rt5640_event_lineout),
@@ -363,6 +371,12 @@ static const struct snd_soc_dapm_route byt_rt5640_intmic_in3_map[] = {
 	{"IN3P", NULL, "Internal Mic"},
 };
 
+static const struct snd_soc_dapm_route byt_rt5640_hsmic2_in1_map[] = {
+	{"Headset Mic 2", NULL, "Platform Clock"},
+	{"Headset Mic 2", NULL, "MICBIAS1"},
+	{"IN1P", NULL, "Headset Mic 2"},
+};
+
 static const struct snd_soc_dapm_route byt_rt5640_ssp2_aif1_map[] = {
 	{"ssp2 Tx", NULL, "codec_out0"},
 	{"ssp2 Tx", NULL, "codec_out1"},
@@ -422,6 +436,7 @@ static const struct snd_soc_dapm_route byt_rt5640_lineout_map[] = {
 static const struct snd_kcontrol_new byt_rt5640_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Headphone"),
 	SOC_DAPM_PIN_SWITCH("Headset Mic"),
+	SOC_DAPM_PIN_SWITCH("Headset Mic 2"),
 	SOC_DAPM_PIN_SWITCH("Internal Mic"),
 	SOC_DAPM_PIN_SWITCH("Speaker"),
 	SOC_DAPM_PIN_SWITCH("Line Out"),
@@ -438,6 +453,75 @@ static struct snd_soc_jack_pin rt5640_pins[] = {
 	},
 };
 
+static struct snd_soc_jack_pin rt5640_pins2[] = {
+	{
+		/* The 2nd headset jack uses lineout with an external HP-amp */
+		.pin	= "Line Out",
+		.mask	= SND_JACK_HEADPHONE,
+	},
+	{
+		.pin	= "Headset Mic 2",
+		.mask	= SND_JACK_MICROPHONE,
+	},
+};
+
+struct snd_soc_jack_gpio rt5640_jack_gpio = {
+	.name = "hp-detect",
+	.report = SND_JACK_HEADSET,
+	.invert = true,
+	.debounce_time = 200,
+};
+
+struct snd_soc_jack_gpio rt5640_jack2_gpio = {
+	.name = "hp2-detect",
+	.report = SND_JACK_HEADSET,
+	.invert = true,
+	.debounce_time = 200,
+};
+
+static const struct acpi_gpio_params acpi_gpio0 = { 0, 0, false };
+static const struct acpi_gpio_params acpi_gpio1 = { 1, 0, false };
+static const struct acpi_gpio_params acpi_gpio2 = { 2, 0, false };
+
+static const struct acpi_gpio_mapping byt_rt5640_hp_elitepad_1000g2_gpios[] = {
+	{ "hp-detect-gpios", &acpi_gpio0, 1, },
+	{ "headset-mic-detect-gpios", &acpi_gpio1, 1, },
+	{ "hp2-detect-gpios", &acpi_gpio2, 1, },
+	{ },
+};
+
+int byt_rt5640_hp_elitepad_1000g2_jack1_check(void *data)
+{
+	struct byt_rt5640_private *priv = data;
+	int jack_status, mic_status;
+
+	jack_status = gpiod_get_value_cansleep(rt5640_jack_gpio.desc);
+	if (jack_status)
+		return 0;
+
+	mic_status = gpiod_get_value_cansleep(priv->hsmic_detect);
+	if (mic_status)
+		return SND_JACK_HEADPHONE;
+	else
+		return SND_JACK_HEADSET;
+}
+
+int byt_rt5640_hp_elitepad_1000g2_jack2_check(void *data)
+{
+	struct snd_soc_component *component = data;
+	int jack_status, report;
+
+	jack_status = gpiod_get_value_cansleep(rt5640_jack2_gpio.desc);
+	if (jack_status)
+		return 0;
+
+	rt5640_enable_micbias1_for_ovcd(component);
+	report = rt5640_detect_headset(component, rt5640_jack2_gpio.desc);
+	rt5640_disable_micbias1_for_ovcd(component);
+
+	return report;
+}
+
 static int byt_rt5640_aif1_hw_params(struct snd_pcm_substream *substream,
 					struct snd_pcm_hw_params *params)
 {
@@ -649,7 +733,8 @@ static const struct dmi_system_id byt_rt5640_quirk_table[] = {
 					BYT_RT5640_MCLK_EN |
 					BYT_RT5640_LINEOUT |
 					BYT_RT5640_LINEOUT_AS_HP2 |
-					BYT_RT5640_HSMIC2_ON_IN1),
+					BYT_RT5640_HSMIC2_ON_IN1 |
+					BYT_RT5640_JD_HP_ELITEP_1000G2),
 	},
 	{	/* HP Pavilion x2 10-k0XX, 10-n0XX */
 		.matches = {
@@ -1086,8 +1171,8 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
 
 	if (byt_rt5640_quirk & BYT_RT5640_HSMIC2_ON_IN1) {
 		ret = snd_soc_dapm_add_routes(&card->dapm,
-					byt_rt5640_intmic_in1_map,
-					ARRAY_SIZE(byt_rt5640_intmic_in1_map));
+					byt_rt5640_hsmic2_in1_map,
+					ARRAY_SIZE(byt_rt5640_hsmic2_in1_map));
 		if (ret)
 			return ret;
 	}
@@ -1172,9 +1257,53 @@ static int byt_rt5640_init(struct snd_soc_pcm_runtime *runtime)
 		snd_soc_component_set_jack(component, &priv->jack, NULL);
 	}
 
+	if (byt_rt5640_quirk & BYT_RT5640_JD_HP_ELITEP_1000G2) {
+		ret = snd_soc_card_jack_new(card, "Headset",
+					    SND_JACK_HEADSET,
+					    &priv->jack, rt5640_pins,
+					    ARRAY_SIZE(rt5640_pins));
+		if (ret)
+			return ret;
+
+		ret = snd_soc_card_jack_new(card, "Headset 2",
+					    SND_JACK_HEADSET,
+					    &priv->jack2, rt5640_pins2,
+					    ARRAY_SIZE(rt5640_pins2));
+		if (ret)
+			return ret;
+
+		rt5640_jack_gpio.data = priv;
+		rt5640_jack_gpio.gpiod_dev = priv->codec_dev;
+		rt5640_jack_gpio.jack_status_check = byt_rt5640_hp_elitepad_1000g2_jack1_check;
+		ret = snd_soc_jack_add_gpios(&priv->jack, 1, &rt5640_jack_gpio);
+		if (ret)
+			return ret;
+
+		rt5640_set_ovcd_params(component);
+		rt5640_jack2_gpio.data = component;
+		rt5640_jack2_gpio.gpiod_dev = priv->codec_dev;
+		rt5640_jack2_gpio.jack_status_check = byt_rt5640_hp_elitepad_1000g2_jack2_check;
+		ret = snd_soc_jack_add_gpios(&priv->jack2, 1, &rt5640_jack2_gpio);
+		if (ret) {
+			snd_soc_jack_free_gpios(&priv->jack, 1, &rt5640_jack_gpio);
+			return ret;
+		}
+	}
+
 	return 0;
 }
 
+static void byt_rt5640_exit(struct snd_soc_pcm_runtime *runtime)
+{
+	struct snd_soc_card *card = runtime->card;
+	struct byt_rt5640_private *priv = snd_soc_card_get_drvdata(card);
+
+	if (byt_rt5640_quirk & BYT_RT5640_JD_HP_ELITEP_1000G2) {
+		snd_soc_jack_free_gpios(&priv->jack2, 1, &rt5640_jack2_gpio);
+		snd_soc_jack_free_gpios(&priv->jack, 1, &rt5640_jack_gpio);
+	}
+}
+
 static int byt_rt5640_codec_fixup(struct snd_soc_pcm_runtime *rtd,
 			    struct snd_pcm_hw_params *params)
 {
@@ -1287,6 +1416,7 @@ static struct snd_soc_dai_link byt_rt5640_dais[] = {
 		.dpcm_playback = 1,
 		.dpcm_capture = 1,
 		.init = byt_rt5640_init,
+		.exit = byt_rt5640_exit,
 		.ops = &byt_rt5640_be_ssp2_ops,
 		SND_SOC_DAILINK_REG(ssp2_port, ssp2_codec, platform),
 	},
@@ -1490,10 +1620,24 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 		return -EPROBE_DEFER;
 	priv->codec_dev = get_device(codec_dev);
 
+	if (byt_rt5640_quirk & BYT_RT5640_JD_HP_ELITEP_1000G2) {
+		acpi_dev_add_driver_gpios(ACPI_COMPANION(priv->codec_dev),
+					  byt_rt5640_hp_elitepad_1000g2_gpios);
+
+		priv->hsmic_detect = devm_fwnode_gpiod_get(&pdev->dev, codec_dev->fwnode,
+							   "headset-mic-detect", GPIOD_IN,
+							   "headset-mic-detect");
+		if (IS_ERR(priv->hsmic_detect)) {
+			ret_val = PTR_ERR(priv->hsmic_detect);
+			dev_err_probe(&pdev->dev, ret_val, "getting hsmic-detect GPIO\n");
+			goto err_device;
+		}
+	}
+
 	/* Must be called before register_card, also see declaration comment. */
 	ret_val = byt_rt5640_add_codec_device_props(codec_dev, priv);
 	if (ret_val)
-		goto err_device;
+		goto err_remove_gpios;
 
 	log_quirks(&pdev->dev);
 
@@ -1597,6 +1741,9 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
 
 err:
 	device_remove_software_node(priv->codec_dev);
+err_remove_gpios:
+	if (byt_rt5640_quirk & BYT_RT5640_JD_HP_ELITEP_1000G2)
+		acpi_dev_remove_driver_gpios(ACPI_COMPANION(priv->codec_dev));
 err_device:
 	put_device(priv->codec_dev);
 	return ret_val;
@@ -1607,6 +1754,9 @@ static int snd_byt_rt5640_mc_remove(struct platform_device *pdev)
 	struct snd_soc_card *card = platform_get_drvdata(pdev);
 	struct byt_rt5640_private *priv = snd_soc_card_get_drvdata(card);
 
+	if (byt_rt5640_quirk & BYT_RT5640_JD_HP_ELITEP_1000G2)
+		acpi_dev_remove_driver_gpios(ACPI_COMPANION(priv->codec_dev));
+
 	device_remove_software_node(priv->codec_dev);
 	put_device(priv->codec_dev);
 	return 0;