wlcore: enable sched scan while connected

New wl12xx firmware supports scheduled scans also while connected.
Stop blocking sched scan requests when connected and add a quirk to
block in hardware that don't support it (currently wl18xx doesn't).

This requires FW version 6/7.3.10.2.112 for single-role and
6/7.5.6.0.25 for multi-role.
Signed-off-by: Victor Goldenshtein <victorg@ti.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>

drivers/net/wireless/ti/wl18xx/main.c

@@ -609,6 +609,7 @@ static int wl18xx_identify_chip(struct wl1271 *wl)
 		wl->quirks |= WLCORE_QUIRK_NO_ELP |
 			      WLCORE_QUIRK_RX_BLOCKSIZE_ALIGN |
 			      WLCORE_QUIRK_TX_BLOCKSIZE_ALIGN |
+			      WLCORE_QUIRK_NO_SCHED_SCAN_WHILE_CONN |
 			      WLCORE_QUIRK_TX_PAD_LAST_FRAME;
 		break;
 	case CHIP_ID_185x_PG10:

drivers/net/wireless/ti/wlcore/scan.c

@@ -766,7 +766,8 @@ int wl1271_scan_sched_scan_start(struct wl1271 *wl, struct wl12xx_vif *wlvif)
 	if (wlvif->bss_type != BSS_TYPE_STA_BSS)
 		return -EOPNOTSUPP;
 
-	if (test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags))
+	if ((wl->quirks & WLCORE_QUIRK_NO_SCHED_SCAN_WHILE_CONN) &&
+	    test_bit(WLVIF_FLAG_IN_USE, &wlvif->flags))
 		return -EBUSY;
 
 	start = kzalloc(sizeof(*start), GFP_KERNEL);

drivers/net/wireless/ti/wlcore/wlcore.h

@@ -437,6 +437,9 @@ wlcore_set_ht_cap(struct wl1271 *wl, enum ieee80211_band band,
 /* extra header space is required for TKIP */
 #define WLCORE_QUIRK_TKIP_HEADER_SPACE		BIT(8)
 
+/* Some firmwares not support sched scans while connected */
+#define WLCORE_QUIRK_NO_SCHED_SCAN_WHILE_CONN	BIT(9)
+
 /* TODO: move to the lower drivers when all usages are abstracted */
 #define CHIP_ID_1271_PG10              (0x4030101)
 #define CHIP_ID_1271_PG20              (0x4030111)