Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit a45a56e8 authored by Sudheer Papothi's avatar Sudheer Papothi
Browse files

ASoC: wcd-mbhc: Avoid headset jack corrosion due to moisture 



Detect moisture in the headset jack and avoid headset jack
corrosion due to presence of moisture over prolonged duration.

Change-Id: I0227e516feb58c96ddf6a8fbc32423bfe7733ca6
Signed-off-by: default avatarSudheer Papothi <spapothi@codeaurora.org>
parent a771e10c

asoc/codecs/wcd-mbhc-v2.c

+50 −1
Original line number Diff line number Diff line
@@ -850,6 +850,36 @@ void wcd_mbhc_find_plug_and_report(struct wcd_mbhc *mbhc, 
}

EXPORT_SYMBOL(wcd_mbhc_find_plug_and_report);



static bool wcd_mbhc_moisture_detect(struct wcd_mbhc *mbhc, bool detection_type)

{

	bool ret = false;



	if (!mbhc->mbhc_cfg->moisture_en ||

	    !mbhc->mbhc_cfg->moisture_duty_cycle_en)

		return ret;



	if (!mbhc->mbhc_cb->mbhc_get_moisture_status ||

	    !mbhc->mbhc_cb->mbhc_moisture_polling_ctrl ||

	    !mbhc->mbhc_cb->mbhc_moisture_detect_en)

		return ret;



	if (mbhc->mbhc_cb->mbhc_get_moisture_status(mbhc)) {

		WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_L_DET_EN, 0);

		WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_GND_DET_EN, 0);

		mbhc->mbhc_cb->mbhc_moisture_polling_ctrl(mbhc, true);

		WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_MECH_DETECTION_TYPE,

					detection_type);

		ret = true;

		WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_L_DET_EN, 1);

		WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_GND_DET_EN, 1);

	} else {

		mbhc->mbhc_cb->mbhc_moisture_polling_ctrl(mbhc, false);

		mbhc->mbhc_cb->mbhc_moisture_detect_en(mbhc, false);

	}



	return ret;

}



static void wcd_mbhc_swch_irq_handler(struct wcd_mbhc *mbhc)

{

	bool detection_type = 0;
@@ -885,6 +915,13 @@ static void wcd_mbhc_swch_irq_handler(struct wcd_mbhc *mbhc) 


	if ((mbhc->current_plug == MBHC_PLUG_TYPE_NONE) &&

	    detection_type) {



		/* If moisture is present, then enable polling, disable

		 * moisture detection and wait for interrupt

		 */

		if (wcd_mbhc_moisture_detect(mbhc, detection_type))

			goto done;



		/* Make sure MASTER_BIAS_CTL is enabled */

		mbhc->mbhc_cb->mbhc_bias(codec, true);
@@ -970,6 +1007,16 @@ static void wcd_mbhc_swch_irq_handler(struct wcd_mbhc *mbhc) 
				mbhc->mbhc_cb->clk_setup(mbhc->codec, false);

		}



		if (mbhc->mbhc_cfg->moisture_en &&

		    mbhc->mbhc_cfg->moisture_duty_cycle_en) {

			if (mbhc->mbhc_cb->mbhc_moisture_polling_ctrl)

				mbhc->mbhc_cb->mbhc_moisture_polling_ctrl(mbhc,

									false);

			if (mbhc->mbhc_cb->mbhc_moisture_detect_en)

				mbhc->mbhc_cb->mbhc_moisture_detect_en(mbhc,

									false);

		}



	} else if (!detection_type) {

		/* Disable external voltage source to micbias if present */

		if (mbhc->mbhc_cb->enable_mb_source)
@@ -980,6 +1027,7 @@ static void wcd_mbhc_swch_irq_handler(struct wcd_mbhc *mbhc) 
		mbhc->extn_cable_hph_rem = false;

	}



done:

	mbhc->in_swch_irq_handler = false;

	WCD_MBHC_RSC_UNLOCK(mbhc);

	pr_debug("%s: leave\n", __func__);
@@ -1294,7 +1342,8 @@ static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc) 
	else

		WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_HS_L_DET_PULL_UP_CTRL, 3);



	if (mbhc->mbhc_cfg->moisture_en && mbhc->mbhc_cb->mbhc_moisture_config)

	if (mbhc->mbhc_cfg->moisture_en && mbhc->mbhc_cb->mbhc_moisture_config

		&& !mbhc->mbhc_cfg->moisture_duty_cycle_en)

		mbhc->mbhc_cb->mbhc_moisture_config(mbhc);



	/*

asoc/codecs/wcd-mbhc-v2.h

+4 −0
Original line number Diff line number Diff line
@@ -437,6 +437,7 @@ struct wcd_mbhc_config { 
	int anc_micbias;

	bool enable_anc_mic_detect;

	u32 enable_usbc_analog;

	bool moisture_duty_cycle_en;

};



struct wcd_mbhc_intr {
@@ -502,6 +503,9 @@ struct wcd_mbhc_cb { 
				 bool enable, int anc_num);

	bool (*is_anc_on)(struct wcd_mbhc *mbhc);

	void (*hph_pull_up_control_v2)(struct snd_soc_codec *, int);

	bool (*mbhc_get_moisture_status)(struct wcd_mbhc *);

	void (*mbhc_moisture_polling_ctrl)(struct wcd_mbhc *, bool);

	void (*mbhc_moisture_detect_en)(struct wcd_mbhc *, bool);

};



struct wcd_mbhc_fn {