X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fssb%2Fdriver_extif.c;h=59385fdab5b0d253dd26587e55390b7fac55a94f;hb=98a8d6efcb910b99ec5f108d21b4b750b32c9468;hp=553227a3062dfa739fd6868990dc4a70118ca045;hpb=9f640a6376e54fa9ae834c32cbe92cefeec970dc;p=karo-tx-linux.git

diff --git a/drivers/ssb/driver_extif.c b/drivers/ssb/driver_extif.c
index 553227a3062d..59385fdab5b0 100644
--- a/drivers/ssb/driver_extif.c
+++ b/drivers/ssb/driver_extif.c
@@ -138,6 +138,13 @@ u32 ssb_extif_watchdog_timer_set(struct ssb_extif *extif, u32 ticks)
 	return ticks;
 }
 
+void ssb_extif_init(struct ssb_extif *extif)
+{
+	if (!extif->dev)
+		return; /* We don't have a Extif core */
+	spin_lock_init(&extif->gpio_lock);
+}
+
 u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask)
 {
 	return extif_read32(extif, SSB_EXTIF_GPIO_IN) & mask;
@@ -145,22 +152,50 @@ u32 ssb_extif_gpio_in(struct ssb_extif *extif, u32 mask)
 
 u32 ssb_extif_gpio_out(struct ssb_extif *extif, u32 mask, u32 value)
 {
-	return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUT(0),
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_OUT(0),
 				   mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
 }
 
 u32 ssb_extif_gpio_outen(struct ssb_extif *extif, u32 mask, u32 value)
 {
-	return extif_write32_masked(extif, SSB_EXTIF_GPIO_OUTEN(0),
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_OUTEN(0),
 				   mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
 }
 
 u32 ssb_extif_gpio_polarity(struct ssb_extif *extif, u32 mask, u32 value)
 {
-	return extif_write32_masked(extif, SSB_EXTIF_GPIO_INTPOL, mask, value);
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_INTPOL, mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
 }
 
 u32 ssb_extif_gpio_intmask(struct ssb_extif *extif, u32 mask, u32 value)
 {
-	return extif_write32_masked(extif, SSB_EXTIF_GPIO_INTMASK, mask, value);
+	unsigned long flags;
+	u32 res = 0;
+
+	spin_lock_irqsave(&extif->gpio_lock, flags);
+	res = extif_write32_masked(extif, SSB_EXTIF_GPIO_INTMASK, mask, value);
+	spin_unlock_irqrestore(&extif->gpio_lock, flags);
+
+	return res;
 }