qcacmn: Add support for WMI over QMI

Add support for WMI over QMI to reduce power consumption for
periodic stats report.

Change-Id: Ic57b2bd18be803c97ffeea2e0073751d31e02202
CRs-fixed: 2521835

qdf/src/qdf_platform.c

@@ -28,6 +28,7 @@ static qdf_self_recovery_callback	self_recovery_cb;
 static qdf_is_fw_down_callback		is_fw_down_cb;
 static qdf_is_recovering_callback	is_recovering_cb;
 static qdf_is_drv_connected_callback    is_drv_connected_cb;
+static qdf_wmi_send_over_qmi_callback _wmi_send_recv_qmi_cb;
 
 void qdf_register_fw_down_callback(qdf_is_fw_down_callback is_fw_down)
 {
@@ -46,9 +47,30 @@ bool qdf_is_fw_down(void)
 
 	return is_fw_down_cb();
 }
-
 qdf_export_symbol(qdf_is_fw_down);
 
+void qdf_register_wmi_send_recv_qmi_callback(qdf_wmi_send_over_qmi_callback
+					     wmi_send_recv_qmi_cb)
+{
+	_wmi_send_recv_qmi_cb = wmi_send_recv_qmi_cb;
+}
+
+qdf_export_symbol(qdf_register_wmi_send_recv_qmi_callback);
+
+QDF_STATUS qdf_wmi_send_recv_qmi(void *buf, uint32_t len, void *cb_ctx,
+				 qdf_wmi_recv_qmi_cb wmi_recv_qmi_cb)
+{
+	if (!_wmi_send_recv_qmi_cb) {
+		QDF_TRACE(QDF_MODULE_ID_QDF, QDF_TRACE_LEVEL_ERROR,
+			  "Platform callback for WMI over QMI not registered");
+			return QDF_STATUS_E_INVAL;
+	}
+
+	return _wmi_send_recv_qmi_cb(buf, len, cb_ctx, wmi_recv_qmi_cb);
+}
+
+qdf_export_symbol(qdf_wmi_send_recv_qmi);
+
 void qdf_register_self_recovery_callback(qdf_self_recovery_callback callback)
 {
 	self_recovery_cb = callback;