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

Commit 6906eb79 authored by Simmi Pateriya's avatar Simmi Pateriya
Browse files

ASoC: wcd: update GND-MIC swap detection 



GND-MIC swap detection needs micbias and schmitt
trigger to be enabled for hardware to indicate
whether a cross connection has been found.

CRs-Fixed: 642944
Change-Id: I1c96ee4a630465c10e7d65913fe9875501f1568d
Signed-off-by: default avatarSimmi Pateriya <simmip@codeaurora.org>
parent eb7b84f4

sound/soc/codecs/wcd-mbhc-v2.c

+28 −2
Original line number Diff line number Diff line
@@ -424,12 +424,38 @@ static void wcd_mbhc_detect_plug_type(struct wcd_mbhc *mbhc) 


	if (!timeout_result) {

		pr_debug("%s No btn press interrupt\n", __func__);

		/*

		 * Check if there is any cross connection,

		 * Micbias and schmitt trigger (HPHL-HPHR)

		 * needs to be enabled.

		 */

		snd_soc_update_bits(codec,

				MSM8X16_WCD_A_ANALOG_MICB_2_EN,

				0x80, 0x80);

		snd_soc_update_bits(codec,

				MSM8X16_WCD_A_ANALOG_MBHC_DET_CTL_2,

				0x6, 0x2);

		/* Update result2 read value with cross connection bit */

		result2 = snd_soc_read(codec,

				MSM8X16_WCD_A_ANALOG_MBHC_ZDET_ELECT_RESULT);

		if (!result1 && (result2 & 0x04)) {

			plug_type = PLUG_TYPE_GND_MIC_SWAP;

			pr_debug("%s: Cross connection identified", __func__);

		} else {

			pr_debug("%s: No Cross connection found", __func__);

		}



		/* Disable micbias and schmitt trigger */

		snd_soc_update_bits(codec,

			MSM8X16_WCD_A_ANALOG_MBHC_DET_CTL_2,

			0x6, 0x0);

		snd_soc_update_bits(codec,

			MSM8X16_WCD_A_ANALOG_MICB_2_EN,

			0x80, 0x00);

		if (!result1 && !result2)

			plug_type = PLUG_TYPE_HEADSET;

		else if (!result1 && (result2 & 0x01))

			plug_type = PLUG_TYPE_HIGH_HPH;

		else if (!result1 && (result2 & 0x04))

			plug_type = PLUG_TYPE_GND_MIC_SWAP;

		else {

			plug_type = PLUG_TYPE_INVALID;

			goto exit;