From 84eaa13616b6e7d001b7f7b909228087779b677b Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Fri, 25 Jan 2013 20:14:44 +0800
Subject: extcon: arizona: Attempt more microphone measurements

In some pathological use cases users may insert an accessory very slowly
causing multiple indeterminate measurements. Handle this by retrying many
measurements before we give up and declare a headphone.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/extcon/extcon-arizona.c b/drivers/extcon/extcon-arizona.c
index b289279..4bb0e9a 100644
--- a/drivers/extcon/extcon-arizona.c
+++ b/drivers/extcon/extcon-arizona.c
@@ -153,6 +153,8 @@ static void arizona_extcon_set_mode(struct arizona_extcon_info *info, int mode)
 {
 	struct arizona *arizona = info->arizona;
 
+	mode %= info->num_micd_modes;
+
 	if (arizona->pdata.micd_pol_gpio > 0)
 		gpio_set_value_cansleep(arizona->pdata.micd_pol_gpio,
 					info->micd_modes[mode].gpio);
@@ -783,7 +785,7 @@ static irqreturn_t arizona_micdet(int irq, void *data)
 	 * impedence then give up and report headphones.
 	 */
 	if (info->detecting && (val & 0x3f8)) {
-		if (info->jack_flips >= info->micd_num_modes) {
+		if (info->jack_flips >= info->micd_num_modes * 10) {
 			dev_dbg(arizona->dev, "Detected HP/line\n");
 			arizona_identify_headphone(info);
 
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