...
+
+/**
+ * omap_hwmod_enable_ioring_wakeup - Set wakeup bit for iopad ring.
+ * @oh: struct omap_hwmod *
+ * @enable: based on 0 or 1 set or unset wakeup bit.
+ *
+ * Traverse through dynamic pads, if pad is enabled then
+ * set wakeup enable bit flag for the mux pin. Wakeup pad bit
+ * will be set during hwmod idle transistion.
+ * Return error if pads are not enabled or not available.
+ */
+int omap_hwmod_enable_ioring_wakeup(struct omap_hwmod *oh, bool enable)
+{
+       struct omap_device_pad *pad;
+       int ret = -EINVAL, j;
+       int val = 0;
+
+       /* Enable pin mux to make pad wake-up capable */
+       if (enable)
+               val = OMAP_WAKEUP_EN;
+       else
+               val = ~OMAP_WAKEUP_EN;
+
+       if (oh->mux->enabled) {
+               for (j = 0; j < oh->mux->nr_pads_dynamic; j++) {
+                       pad = oh->mux->pads_dynamic[j];
+                       if (pad->flags & OMAP_DEVICE_PAD_WAKEUP) {
+                               pad->idle = pad->enable | val;