wlan: Update BT enable/disable status to firmware

Update BT enable/disable status coming from
wcnss to firmware.

Usage:
Enable BT:
$ echo BT_ENABLED 1 BLE 0 A2DP 0 SCO 0 >
	/sys/devices/platform/soc/a000000.qcom,wcnss-wlan/bt_profile

Disable BT:
$ echo BT_ENABLED 0 BLE 0 A2DP 0 SCO 0 >
	/sys/devices/platform/soc/a000000.qcom,wcnss-wlan/bt_profile

Change-Id: I57df353427cb33bef9ebe904db071692294e4c86
CRs-Fixed: 2807024
diff --git a/CORE/HDD/inc/wlan_hdd_main.h b/CORE/HDD/inc/wlan_hdd_main.h
index c4c33ae..3512714 100644
--- a/CORE/HDD/inc/wlan_hdd_main.h
+++ b/CORE/HDD/inc/wlan_hdd_main.h
@@ -1796,6 +1796,7 @@
     v_BOOL_t btCoexModeSet;
     v_BOOL_t isPnoEnable;
     bool     is_sco_enabled;
+    bool     is_bt_enabled;
     macAddrSpoof_t spoofMacAddr;
     /* flag to decide if driver need to scan DFS channels or not */
     v_BOOL_t  disable_dfs_flag;
diff --git a/CORE/HDD/src/wlan_hdd_main.c b/CORE/HDD/src/wlan_hdd_main.c
index 9c44e86..ffa18d0 100644
--- a/CORE/HDD/src/wlan_hdd_main.c
+++ b/CORE/HDD/src/wlan_hdd_main.c
@@ -3929,6 +3929,7 @@
 			       bool bt_enabled, bool bt_sco)
 {
 	tpAniSirGlobal mac_ctx = PMAC_STRUCT(hdd_ctx->hHal);
+	uint8_t no_of_states_changed = 0;
 	hdd_station_ctx_t *hdd_sta_ctx;
 	eConnectionState conn_state;
 	hdd_adapter_t *adapter;
@@ -3941,6 +3942,49 @@
 		return -EINVAL;
 	}
 
+	/**
+	 * At a time only one status can be changed compared to
+	 * previous command (BT_ENABLED/SCO)
+	 * If no.of states changed is greater than one it is
+	 * an invalid command.
+	 */
+	if (bt_enabled != hdd_ctx->is_bt_enabled)
+		no_of_states_changed++;
+
+	if (bt_sco != hdd_ctx->is_sco_enabled)
+		no_of_states_changed++;
+
+	if (no_of_states_changed > 1) {
+		hddLog(VOS_TRACE_LEVEL_ERROR, "%s: Multiple states changed",
+		       __func__);
+		return -EINVAL;
+	}
+
+	INIT_COMPLETION(hdd_ctx->sw_pta_comp);
+
+	if (bt_enabled != hdd_ctx->is_bt_enabled) {
+		hal_status = sme_bt_req(hdd_ctx->hHal,
+					hdd_sco_resp_callback,
+					adapter->sessionId, bt_enabled);
+		if (!HAL_STATUS_SUCCESS(hal_status)) {
+			hddLog(VOS_TRACE_LEVEL_ERROR,
+			       "%s: Error sending sme sco indication request",
+			       __func__);
+			return -EINVAL;
+		}
+
+		rc = wait_for_completion_timeout(&hdd_ctx->sw_pta_comp,
+				msecs_to_jiffies(WLAN_WAIT_TIME_SW_PTA));
+		if (!rc) {
+			hddLog(VOS_TRACE_LEVEL_ERROR,
+			       FL("Target response timed out for sw_pta_comp"));
+			return -EINVAL;
+		}
+
+		hdd_ctx->is_bt_enabled = bt_enabled;
+		return 0;
+	}
+
 	if (bt_sco) {
 		if (hdd_ctx->is_sco_enabled) {
 			hddLog(VOS_TRACE_LEVEL_ERROR,
@@ -3957,8 +4001,6 @@
 		sco_status = false;
 	}
 
-	INIT_COMPLETION(hdd_ctx->sw_pta_comp);
-
 	hal_status = sme_sco_req(hdd_ctx->hHal,
 				 hdd_sco_resp_callback,
 				 adapter->sessionId, sco_status);
diff --git a/CORE/SME/inc/sme_Api.h b/CORE/SME/inc/sme_Api.h
index 9c5d509..d695c9b 100644
--- a/CORE/SME/inc/sme_Api.h
+++ b/CORE/SME/inc/sme_Api.h
@@ -4218,5 +4218,18 @@
 eHalStatus sme_sco_req(tHalHandle hal,
 		       void (*resp_callback)(uint8_t resp_status),
 		       uint8_t session_id, uint8_t req_status);
+
+/**
+ * sme_bt_req() - Send bt status to sme
+ * @hal: The handle returned by mac_open
+ * @resp_callback: callback to indicate sco response to hdd
+ * @session_id: session id
+ * @req_status: sco request status
+ *
+ * Return: HAL_STATUS
+ */
+eHalStatus sme_bt_req(tHalHandle hal,
+		       void (*resp_callback)(uint8_t resp_status),
+		       uint8_t session_id, uint8_t req_status);
 #endif /* FEATURE_WLAN_SW_PTA */
 #endif //#if !defined( __SME_API_H )
diff --git a/CORE/SME/src/sme_common/sme_Api.c b/CORE/SME/src/sme_common/sme_Api.c
index 3382ed1..3b538c9 100644
--- a/CORE/SME/src/sme_common/sme_Api.c
+++ b/CORE/SME/src/sme_common/sme_Api.c
@@ -15745,4 +15745,12 @@
 	return sme_sw_pta_req(hal, resp_callback, session_id,
 			      SCO_STATUS, sizeof(req_status), &req_status);
 }
+
+eHalStatus sme_bt_req(tHalHandle hal,
+		      void (*resp_callback)(uint8_t resp_status),
+		      uint8_t session_id, uint8_t req_status)
+{
+	return sme_sw_pta_req(hal, resp_callback, session_id,
+			      BT_STATUS, sizeof(req_status), &req_status);
+}
 #endif /* FEATURE_WLAN_SW_PTA */