wl1271: Added support to scan on 5 GHz band

Added support to scan 802.11a access points on 5 GHz band when using
wl1273 chip.

Signed-off-by: Teemu Paasikivi <ext-teemu.3.paasikivi@nokia.com>
Reviewed-by: Juuso Oikarinen <juuso.oikarinen@nokia.com>
Signed-off-by: Luciano Coelho <luciano.coelho@nokia.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/wl12xx/wl1271_event.c b/drivers/net/wireless/wl12xx/wl1271_event.c
index 4189e97..e2d7758 100644
--- a/drivers/net/wireless/wl12xx/wl1271_event.c
+++ b/drivers/net/wireless/wl12xx/wl1271_event.c
@@ -31,19 +31,40 @@
 static int wl1271_event_scan_complete(struct wl1271 *wl,
 				      struct event_mailbox *mbox)
 {
+	int size = sizeof(struct wl12xx_probe_req_template);
 	wl1271_debug(DEBUG_EVENT, "status: 0x%x",
 		     mbox->scheduled_scan_status);
 
 	if (wl->scanning) {
-		int size = sizeof(struct wl12xx_probe_req_template);
-		wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4, NULL,
-					size);
-		mutex_unlock(&wl->mutex);
-		ieee80211_scan_completed(wl->hw, false);
-		mutex_lock(&wl->mutex);
-		wl->scanning = false;
-	}
+		if (wl->scan.state == WL1271_SCAN_BAND_DUAL) {
+			wl1271_cmd_template_set(wl, CMD_TEMPL_CFG_PROBE_REQ_2_4,
+						NULL, size);
+			/* 2.4 GHz band scanned, scan 5 GHz band, pretend
+			 * to the wl1271_cmd_scan function that we are not
+			 * scanning as it checks that.
+			 */
+			wl->scanning = false;
+			wl1271_cmd_scan(wl, wl->scan.ssid, wl->scan.ssid_len,
+						wl->scan.active,
+						wl->scan.high_prio,
+						WL1271_SCAN_BAND_5_GHZ,
+						wl->scan.probe_requests);
+		} else {
+			if (wl->scan.state == WL1271_SCAN_BAND_2_4_GHZ)
+				wl1271_cmd_template_set(wl,
+						CMD_TEMPL_CFG_PROBE_REQ_2_4,
+						NULL, size);
+			else
+				wl1271_cmd_template_set(wl,
+						CMD_TEMPL_CFG_PROBE_REQ_5,
+						NULL, size);
 
+			mutex_unlock(&wl->mutex);
+			ieee80211_scan_completed(wl->hw, false);
+			mutex_lock(&wl->mutex);
+			wl->scanning = false;
+		}
+	}
 	return 0;
 }