ASoC: Fix audio distortion issue during headset record

Audio is distorted during first 3 secs on headset record
while doing device switch from dmic to headset mic.
Disable BCS before slow insertion detection and enable it
afterwards to resolve the issue.

Change-Id: Ie5bc4b5292e5f69066760cab44d78989a74f13f4
Signed-off-by: Vatsal Bucha <vbucha@codeaurora.org>

asoc/codecs/wcd-mbhc-adc.c

@@ -689,6 +689,13 @@ static void wcd_correct_swch_plug(struct work_struct *work)
 	}
 
 correct_plug_type:
+	/*
+	 * Callback to disable BCS slow insertion detection
+	 */
+	if (plug_type == MBHC_PLUG_TYPE_HEADSET ||
+	    plug_type == MBHC_PLUG_TYPE_HEADPHONE)
+		mbhc->mbhc_cb->bcs_enable(mbhc, false);
+
 	timeout = jiffies + msecs_to_jiffies(HS_DETECT_PLUG_TIME_MS);
 	while (!time_after(jiffies, timeout)) {
 		if (mbhc->hs_detect_work_stop) {
@@ -833,6 +840,10 @@ correct_plug_type:
 			wrk_complete = false;
 		}
 	}
+	if ((plug_type == MBHC_PLUG_TYPE_HEADSET ||
+	    plug_type == MBHC_PLUG_TYPE_HEADPHONE))
+		mbhc->mbhc_cb->bcs_enable(mbhc, true);
+
 	if (!wrk_complete) {
 		/*
 		 * If plug_tye is headset, we might have already reported either