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Commit b99e002e authored by Vijay Kumar Maddula's avatar Vijay Kumar Maddula Committed by Gerrit - the friendly Code Review server
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ASoC: rouleur-mbhc: Fix pop noise heard when headset insertion 



Observed pop noise during impedance discharge after
headset/headphone plugged in.
Adding 40ms delay while discharge to complete ramp down properly.

Change-Id: I7eb4ba3423660454990722579b7c7b57156c8067
Signed-off-by: default avatarVijay Kumar Maddula <quic_vmaddula@quicinc.com>
parent 5fd49711

asoc/codecs/rouleur/rouleur-mbhc.c

+5 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/* Copyright (c) 2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.

 */

#include <linux/module.h>

#include <linux/init.h>
@@ -459,6 +460,10 @@ static void rouleur_mbhc_get_result_params(struct rouleur_priv *rouleur, 
		__func__, *zdet);

	/* Start discharge */

	regmap_update_bits(rouleur->regmap, ROULEUR_ANA_MBHC_ZDET, 0x20, 0x00);

	/* Discharge operation takes time for the HPH PA to ramp down to 0V.

	 * Add finite amunt of delay to complete ramp down.

	 */

	usleep_range(40000, 40010);

}



static void rouleur_mbhc_zdet_start(struct snd_soc_component *component,