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Commit 8b38a662 authored by Phani Kumar Uppalapati's avatar Phani Kumar Uppalapati
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ASoC: wcd9xxx: Add support to enable or disable impedance detection 



Add support to enable or disable impedance detection
using kernel module parameter. This gives flexibility
for the user to enable or disable this feature.

Change-Id: Ieeb724241f08b861c1bf9a9c06b59d4827ecfd20
Signed-off-by: default avatarPhani Kumar Uppalapati <phaniu@codeaurora.org>
parent 6ce1bcb4

sound/soc/codecs/wcd9xxx-mbhc.c

+7 −1
Original line number Diff line number Diff line
@@ -125,6 +125,11 @@ 
#define WCD9XXX_MB_MEAS_DELTA_MAX_MV 80

#define WCD9XXX_CS_MEAS_DELTA_MAX_MV 10



static int impedance_detect_en;

module_param(impedance_detect_en, int,

			S_IRUGO | S_IWUSR | S_IWGRP);

MODULE_PARM_DESC(impedance_detect_en, "enable/disable impedance detect");



static bool detect_use_vddio_switch = true;



struct wcd9xxx_mbhc_detect {
@@ -866,7 +871,7 @@ static void wcd9xxx_report_plug(struct wcd9xxx_mbhc *mbhc, int insertion, 
			mbhc->micbias_enable_cb(mbhc->codec, true);

		}



		if (mbhc->impedance_detect)

		if (mbhc->impedance_detect && impedance_detect_en)

			wcd9xxx_detect_impedance(mbhc, &mbhc->zl, &mbhc->zr);



		pr_debug("%s: Reporting insertion %d(%x)\n", __func__,
@@ -4456,6 +4461,7 @@ int wcd9xxx_mbhc_init(struct wcd9xxx_mbhc *mbhc, struct wcd9xxx_resmgr *resmgr, 
	mbhc->rco_clk_rate = rco_clk_rate;

	mbhc->mbhc_cb = mbhc_cb;

	mbhc->impedance_detect = impedance_det_en;

	impedance_detect_en = impedance_det_en ? 1 : 0;



	if (mbhc->headset_jack.jack == NULL) {

		ret = snd_soc_jack_new(codec, "Headset Jack", WCD9XXX_JACK_MASK,