ASoC: wcd-mbhc: Disable micbias internal pull-up after headphone detected

Micbias2 internal pull-up remains enabled even after headphone is detected.
This results in power issues. Disable pull up after insertion detection.

Change-Id: I335dbb498192738fc282421d92510400a661cf0c
Signed-off-by: Vatsal Bucha <[email protected]>

asoc/codecs/wcd-mbhc-v2.c

@@ -758,6 +758,10 @@ void wcd_mbhc_report_plug(struct wcd_mbhc *mbhc, int insertion,
 
 		mbhc->hph_status |= jack_type;
 
+		if (jack_type == SND_JACK_HEADPHONE &&
+		    mbhc->mbhc_cb->mbhc_micb_ramp_control)
+			mbhc->mbhc_cb->mbhc_micb_ramp_control(component, false);
+
 		pr_debug("%s: Reporting insertion %d(%x)\n", __func__,
 			 jack_type, mbhc->hph_status);
 		wcd_mbhc_jack_report(mbhc, &mbhc->headset_jack,
@@ -952,6 +956,10 @@ static void wcd_mbhc_swch_irq_handler(struct wcd_mbhc *mbhc)
 	else
 		pr_info("%s: hs_detect_plug work not cancelled\n", __func__);
 
+	/* Enable micbias ramp */
+	if (mbhc->mbhc_cb->mbhc_micb_ramp_control)
+		mbhc->mbhc_cb->mbhc_micb_ramp_control(component, true);
+
 	if (mbhc->mbhc_cb->micbias_enable_status)
 		micbias1 = mbhc->mbhc_cb->micbias_enable_status(mbhc,
 						MIC_BIAS_1);
@@ -1459,9 +1467,6 @@ static int wcd_mbhc_initialise(struct wcd_mbhc *mbhc)
 	/* Button Debounce set to 16ms */
 	WCD_MBHC_REG_UPDATE_BITS(WCD_MBHC_BTN_DBNC, 2);
 
-	/* Enable micbias ramp */
-	if (mbhc->mbhc_cb->mbhc_micb_ramp_control)
-		mbhc->mbhc_cb->mbhc_micb_ramp_control(component, true);
 	/* enable bias */
 	mbhc->mbhc_cb->mbhc_bias(component, true);
 	/* enable MBHC clock */