X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=sound%2Fsoc%2Fsoc-jack.c;h=1d455ab79490a70fdb0833638205a387ecccb8aa;hb=9d416811f8cab11bf595b2880c557c33e3ae1ae9;hp=28346fb2e70c08033158920f4ae7a35032239762;hpb=65fb0d23fcddd8697c871047b700c78817bdaa43;p=pandora-kernel.git

diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c
index 28346fb2e70c..1d455ab79490 100644
--- a/sound/soc/soc-jack.c
+++ b/sound/soc/soc-jack.c
@@ -73,14 +73,15 @@ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask)
 	oldstatus = jack->status;
 
 	jack->status &= ~mask;
-	jack->status |= status;
+	jack->status |= status & mask;
 
-	/* The DAPM sync is expensive enough to be worth skipping */
-	if (jack->status == oldstatus)
+	/* The DAPM sync is expensive enough to be worth skipping.
+	 * However, empty mask means pin synchronization is desired. */
+	if (mask && (jack->status == oldstatus))
 		goto out;
 
 	list_for_each_entry(pin, &jack->pins, list) {
-		enable = pin->mask & status;
+		enable = pin->mask & jack->status;
 
 		if (pin->invert)
 			enable = !enable;
@@ -220,6 +221,9 @@ int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 		if (ret)
 			goto err;
 
+		INIT_WORK(&gpios[i].work, gpio_work);
+		gpios[i].jack = jack;
+
 		ret = request_irq(gpio_to_irq(gpios[i].gpio),
 				gpio_handler,
 				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
@@ -228,8 +232,13 @@ int snd_soc_jack_add_gpios(struct snd_soc_jack *jack, int count,
 		if (ret)
 			goto err;
 
-		INIT_WORK(&gpios[i].work, gpio_work);
-		gpios[i].jack = jack;
+#ifdef CONFIG_GPIO_SYSFS
+		/* Expose GPIO value over sysfs for diagnostic purposes */
+		gpio_export(gpios[i].gpio, false);
+#endif
+
+		/* Update initial jack status */
+		snd_soc_jack_gpio_detect(&gpios[i]);
 	}
 
 	return 0;
@@ -258,6 +267,9 @@ void snd_soc_jack_free_gpios(struct snd_soc_jack *jack, int count,
 	int i;
 
 	for (i = 0; i < count; i++) {
+#ifdef CONFIG_GPIO_SYSFS
+		gpio_unexport(gpios[i].gpio);
+#endif
 		free_irq(gpio_to_irq(gpios[i].gpio), &gpios[i]);
 		gpio_free(gpios[i].gpio);
 		gpios[i].jack = NULL;