touch:wm97xx: Added debug messages

BCS 746-000965

drivers/input/touchscreen/wm9705.c

@@ -267,13 +267,16 @@ static void wm9705_phy_init(struct wm97xx *wm)
 static void wm9705_dig_enable(struct wm97xx *wm, int enable)
 {
 	if (enable) {
+		dev_dbg(wm->dev, "Pen digitiser powered up");
 		wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2,
 				 wm->dig[2] | WM97XX_PRP_DET_DIG);
 		wm97xx_reg_read(wm, AC97_WM97XX_DIGITISER_RD); /* dummy read */
-	} else
+	} else {
+		dev_dbg(wm->dev, "Pen digitiser powered down");
 		wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2,
 				 wm->dig[2] & ~WM97XX_PRP_DET_DIG);
 	}
+}
 
 static void wm9705_aux_prepare(struct wm97xx *wm)
 {
@@ -284,6 +287,8 @@ static void wm9705_aux_prepare(struct wm97xx *wm)
 
 static void wm9705_dig_restore(struct wm97xx *wm)
 {
+	dev_dbg(wm->dev, "Restore digitiser control words");
+
 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER1, wm->dig_save[1]);
 	wm97xx_reg_write(wm, AC97_WM97XX_DIGITISER2, wm->dig_save[2]);
 }