st/cw1200/pm.c

97 		   struct cw1200_common *priv)
137 static int cw1200_resume_work(struct cw1200_common *priv,
144 	return queue_delayed_work(priv->workqueue, work, tmo);
147 int cw1200_can_suspend(struct cw1200_common *priv)
149 	if (atomic_read(&priv->bh_rx)) {
150 		wiphy_dbg(priv->hw->wiphy, "Suspend interrupted.\n");
159 	struct cw1200_common *priv = hw->priv;
160 	struct cw1200_pm_state *pm_state = &priv->pm_state;
171 	if (priv->tx_queue_stats.num_queued)
175 	if (!mutex_trylock(&priv->conf_mutex))
182 	if (priv->channel_switch_in_progress)
186 	if (priv->join_pending)
190 	if (down_trylock(&priv->scan.lock))
194 	wsm_lock_tx_async(priv);
199 	if (wait_event_timeout(priv->bh_evt_wq,
200 			       !priv->hw_bufs_used, HZ / 10) <= 0)
204 	wsm_set_udp_port_filter(priv, &cw1200_udp_port_filter_on.hdr);
207 	wsm_set_ether_type_filter(priv, &cw1200_ether_type_filter_on.hdr);
215 	if (!priv->vif->p2p &&
216 	    priv->join_status == CW1200_JOIN_STATUS_STA &&
217 	    priv->powersave_mode.mode != WSM_PSM_PS) {
218 		state->prev_ps_mode = priv->powersave_mode.mode;
219 		priv->powersave_mode.mode = WSM_PSM_PS;
220 		cw1200_set_pm(priv, &priv->powersave_mode);
221 		if (wait_event_interruptible_timeout(priv->ps_mode_switch_done,
222 						     !priv->ps_mode_switch_in_progress, 1*HZ) <= 0) {
229 		cw1200_suspend_work(&priv->bss_loss_work);
231 		cw1200_suspend_work(&priv->join_timeout);
233 		cw1200_suspend_work(&priv->scan.probe_work);
235 		cw1200_suspend_work(&priv->link_id_gc_work);
237 	cancel_delayed_work_sync(&priv->clear_recent_scan_work);
238 	atomic_set(&priv->recent_scan, 0);
241 	if (priv->join_status == CW1200_JOIN_STATUS_STA &&
242 	    priv->join_dtim_period &&
243 	    !priv->has_multicast_subscription) {
245 		wsm_set_beacon_wakeup_period(priv,
246 					     priv->join_dtim_period,
247 					     CW1200_BEACON_SKIPPING_MULTIPLIER * priv->join_dtim_period);
251 	if (cw1200_bh_suspend(priv))
254 	ret = timer_pending(&priv->mcast_timeout);
262 	ret = priv->hwbus_ops->power_mgmt(priv->hwbus_priv, true);
264 		wiphy_err(priv->hw->wiphy,
271 	if (atomic_read(&priv->bh_rx)) {
279 	WARN_ON(cw1200_bh_resume(priv));
281 	cw1200_resume_work(priv, &priv->bss_loss_work,
283 	cw1200_resume_work(priv, &priv->join_timeout,
285 	cw1200_resume_work(priv, &priv->scan.probe_work,
287 	cw1200_resume_work(priv, &priv->link_id_gc_work,
292 	wsm_set_udp_port_filter(priv, &cw1200_udp_port_filter_off);
293 	wsm_set_ether_type_filter(priv, &cw1200_ether_type_filter_off);
295 	wsm_unlock_tx(priv);
296 	up(&priv->scan.lock);
298 	mutex_unlock(&priv->conf_mutex);
304 	struct cw1200_common *priv = hw->priv;
305 	struct cw1200_pm_state *pm_state = &priv->pm_state;
312 	priv->hwbus_ops->power_mgmt(priv->hwbus_priv, false);
318 	up(&priv->scan.lock);
321 	WARN_ON(cw1200_bh_resume(priv));
324 	if (!priv->vif->p2p && priv->join_status == CW1200_JOIN_STATUS_STA) {
325 		priv->powersave_mode.mode = state->prev_ps_mode;
326 		cw1200_set_pm(priv, &priv->powersave_mode);
330 		wsm_set_beacon_wakeup_period(priv, priv->beacon_int *
331 					     priv->join_dtim_period >
333 					     priv->join_dtim_period, 0);
338 	cw1200_resume_work(priv, &priv->bss_loss_work,
340 	cw1200_resume_work(priv, &priv->join_timeout,
342 	cw1200_resume_work(priv, &priv->scan.probe_work,
344 	cw1200_resume_work(priv, &priv->link_id_gc_work,
348 	wsm_set_udp_port_filter(priv, &cw1200_udp_port_filter_off);
351 	wsm_set_ether_type_filter(priv, &cw1200_ether_type_filter_off);
354 	wsm_unlock_tx(priv);
357 	mutex_unlock(&priv->conf_mutex);