disp: msm: dp: disable aux switch at the start of the disconnect path

Currently the aux switch is disabled at the end of the disconnect
path which would include the wait time upto 5 secs becauase of usermode
cleanup. However, the PMIC module is expecting the aux switch to be
disabled within 400 msec after the disconnect is notified. If not, this
would trigger an LPD failure. This change moves aux switch disable
further up in the disconnect path, before waiting on completion of
usermode cleanup.

Change-Id: I42e0608f06127729a78de11631d16d0a3ca0d2b4
Signed-off-by: Sandeep Gangadharaiah <[email protected]>

msm/dp/dp_display.c

@@ -1646,6 +1646,10 @@ static void dp_display_disconnect_sync(struct dp_display_private *dp)
 	cancel_work_sync(&dp->attention_work);
 	flush_workqueue(dp->wq);
 
+	if (!dp->debug->sim_mode && !dp->no_aux_switch
+	    && !dp->parser->gpio_aux_switch)
+		dp->aux->aux_switch(dp->aux, false, ORIENTATION_NONE);
+
 	/*
 	 * Delay the teardown of the mainlink for better interop experience.
 	 * It is possible that certain sinks can issue an HPD high immediately
@@ -1703,10 +1707,6 @@ static int dp_display_usbpd_disconnect_cb(struct device *dev)
 	dp_display_state_remove(DP_STATE_CONFIGURED);
 	mutex_unlock(&dp->session_lock);
 
-	if (!dp->debug->sim_mode && !dp->no_aux_switch
-	    && !dp->parser->gpio_aux_switch)
-		dp->aux->aux_switch(dp->aux, false, ORIENTATION_NONE);
-
 	SDE_EVT32_EXTERNAL(SDE_EVTLOG_FUNC_EXIT, dp->state);
 end:
 	return rc;