ASOC: codecs: clear the interrupt ack registers for wcd937x

Clear the wcd937x interrupt ack registers in post_irq_handler.
This is needed for wcd937x, as regmap_irq is not clearing
the ack registers after the ack bits are set.

Change-Id: I105a4b423a0d01ff1bd3239e0f2d42294557ff10
Signed-off-by: Vangala, Amarnath <[email protected]>

asoc/codecs/wcd937x/wcd937x.c

@@ -142,6 +142,11 @@ static int wcd937x_handle_post_irq(void *data)
 	struct wcd937x_priv *wcd937x = data;
 	u32 status1 = 0, status2 = 0, status3 = 0;
 
+	/* Clear the ACK registers. Temporary workaround.*/
+	regmap_write(wcd937x->regmap, WCD937X_DIGITAL_INTR_CLEAR_0, 0x0);
+	regmap_write(wcd937x->regmap, WCD937X_DIGITAL_INTR_CLEAR_1, 0x0);
+	regmap_write(wcd937x->regmap, WCD937X_DIGITAL_INTR_CLEAR_2, 0x0);
+
 	regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_0, &status1);
 	regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_1, &status2);
 	regmap_read(wcd937x->regmap, WCD937X_DIGITAL_INTR_STATUS_2, &status3);