asoc: codecs: modify gnd mic swap threshold for usb-c analog

To reduce time of usb-c analog headset detection, reduce
gnd mic swap threshold if usb-c is enabled. Use
existing threshold value otherwise.

CRs-Fixed: 2137077
Change-Id: Ic1d1f3a00c9034caaac45f2c80f018546a69ce59
Signed-off-by: Karthikeyan Mani <[email protected]>

asoc/codecs/wcd-mbhc-adc.c

@@ -622,7 +622,7 @@ static void wcd_correct_swch_plug(struct work_struct *work)
 	do {
 		cross_conn = wcd_check_cross_conn(mbhc);
 		try++;
-	} while (try < GND_MIC_SWAP_THRESHOLD);
+	} while (try < mbhc->swap_thr);
 
 	if (cross_conn > 0) {
 		plug_type = MBHC_PLUG_TYPE_GND_MIC_SWAP;
@@ -714,10 +714,10 @@ correct_plug_type:
 				pt_gnd_mic_swap_cnt++;
 				no_gnd_mic_swap_cnt = 0;
 				if (pt_gnd_mic_swap_cnt <
-						GND_MIC_SWAP_THRESHOLD) {
+						mbhc->swap_thr) {
 					continue;
 				} else if (pt_gnd_mic_swap_cnt >
-					   GND_MIC_SWAP_THRESHOLD) {
+					   mbhc->swap_thr) {
 					/*
 					 * This is due to GND/MIC switch didn't
 					 * work,  Report unsupported plug.
@@ -735,14 +735,14 @@ correct_plug_type:
 				plug_type = wcd_mbhc_get_plug_from_adc(
 						mbhc, output_mv);
 				if ((no_gnd_mic_swap_cnt <
-				    GND_MIC_SWAP_THRESHOLD) &&
+				    mbhc->swap_thr) &&
 				    (spl_hs_count != WCD_MBHC_SPL_HS_CNT)) {
 					continue;
 				} else {
 					no_gnd_mic_swap_cnt = 0;
 				}
 			}
-			if ((pt_gnd_mic_swap_cnt == GND_MIC_SWAP_THRESHOLD) &&
+			if ((pt_gnd_mic_swap_cnt == mbhc->swap_thr) &&
 				(plug_type == MBHC_PLUG_TYPE_GND_MIC_SWAP)) {
 				/*
 				 * if switch is toggled, check again,

asoc/codecs/wcd-mbhc-legacy.c

@@ -498,7 +498,7 @@ static void wcd_correct_swch_plug(struct work_struct *work)
 	do {
 		cross_conn = wcd_check_cross_conn(mbhc);
 		try++;
-	} while (try < GND_MIC_SWAP_THRESHOLD);
+	} while (try < mbhc->swap_thr);
 
 	/*
 	 * Check for cross connection 4 times.
@@ -599,10 +599,10 @@ correct_plug_type:
 				pt_gnd_mic_swap_cnt++;
 				no_gnd_mic_swap_cnt = 0;
 				if (pt_gnd_mic_swap_cnt <
-						GND_MIC_SWAP_THRESHOLD) {
+						mbhc->swap_thr) {
 					continue;
 				} else if (pt_gnd_mic_swap_cnt >
-						GND_MIC_SWAP_THRESHOLD) {
+						mbhc->swap_thr) {
 					/*
 					 * This is due to GND/MIC switch didn't
 					 * work,  Report unsupported plug.
@@ -626,7 +626,7 @@ correct_plug_type:
 					no_gnd_mic_swap_cnt = 0;
 				}
 			}
-			if ((pt_gnd_mic_swap_cnt == GND_MIC_SWAP_THRESHOLD) &&
+			if ((pt_gnd_mic_swap_cnt == mbhc->swap_thr) &&
 				(plug_type == MBHC_PLUG_TYPE_GND_MIC_SWAP)) {
 				/*
 				 * if switch is toggled, check again,

asoc/codecs/wcd-mbhc-v2.c

@@ -1707,6 +1707,7 @@ int wcd_mbhc_start(struct wcd_mbhc *mbhc, struct wcd_mbhc_config *mbhc_cfg)
 	if (mbhc_cfg->enable_usbc_analog) {
 		dev_dbg(mbhc->codec->dev, "%s: usbc analog enabled\n",
 				__func__);
+		mbhc->swap_thr = GND_MIC_USBC_SWAP_THRESHOLD;
 		rc = wcd_mbhc_init_gpio(mbhc, mbhc_cfg,
 				"qcom,usbc-analog-en1-gpio",
 				&config->usbc_en1_gpio,
@@ -1901,6 +1902,7 @@ int wcd_mbhc_init(struct wcd_mbhc *mbhc, struct snd_soc_codec *codec,
 	mbhc->extn_cable_hph_rem = false;
 	mbhc->hph_type = WCD_MBHC_HPH_NONE;
 	mbhc->wcd_mbhc_regs = wcd_mbhc_regs;
+	mbhc->swap_thr = GND_MIC_SWAP_THRESHOLD;
 
 	if (mbhc->intr_ids == NULL) {
 		pr_err("%s: Interrupt mapping not provided\n", __func__);

asoc/codecs/wcd-mbhc-v2.h

@@ -142,6 +142,7 @@ do {                                                    \
 #define SPECIAL_HS_DETECT_TIME_MS (2 * 1000)
 #define MBHC_BUTTON_PRESS_THRESHOLD_MIN 250
 #define GND_MIC_SWAP_THRESHOLD 4
+#define GND_MIC_USBC_SWAP_THRESHOLD 2
 #define WCD_FAKE_REMOVAL_MIN_PERIOD_MS 100
 #define HS_VREF_MIN_VAL 1400
 #define FW_READ_ATTEMPTS 15
@@ -524,6 +525,7 @@ struct wcd_mbhc {
 	bool gnd_swh; /*track GND switch NC / NO */
 	u32 hs_thr;
 	u32 hph_thr;
+	u32 swap_thr;
 	u32 moist_vref;
 	u32 moist_iref;
 	u32 moist_rref;