diff --git a/wifi/hostapd/1.1/IHostapd.hal b/wifi/hostapd/1.1/IHostapd.hal
index 4e59ffc..c144f6a 100644
--- a/wifi/hostapd/1.1/IHostapd.hal
+++ b/wifi/hostapd/1.1/IHostapd.hal
@@ -26,6 +26,64 @@
  */
 interface IHostapd extends @1.0::IHostapd {
     /**
+     * Parameters to specify the channel range for ACS.
+     */
+    struct AcsChannelRange {
+        /**
+         * Channel number (IEEE 802.11) at the start of the range.
+         */
+        uint32_t start;
+        /**
+         * Channel number (IEEE 802.11) at the end of the range.
+         */
+        uint32_t end;
+    };
+
+    /**
+     * Parameters to control the channel selection for the interface.
+     */
+    struct ChannelParams {
+        /**
+         * This option can be used to specify the channels selected by ACS.
+         * If this is an empty list, all channels allowed in selected HW mode
+         * are specified implicitly.
+         * Note: channels may be overridden by firmware.
+         * Note: this option is ignored if ACS is disabled.
+         */
+        vec<AcsChannelRange> acsChannelRanges;
+    };
+
+    /**
+     * Parameters to use for setting up the access point interface.
+     */
+    struct IfaceParams {
+        /**
+         * Baseline information as defined in HAL 1.0.
+         */
+        @1.0::IHostapd.IfaceParams V1_0;
+        /** Additional Channel params for the interface */
+        ChannelParams channelParams;
+    };
+
+    /**
+     * Adds a new access point for hostapd to control.
+     *
+     * This should trigger the setup of an access point with the specified
+     * interface and network params.
+     *
+     * @param ifaceParams AccessPoint Params for the access point.
+     * @param nwParams Network Params for the access point.
+     * @return status Status of the operation.
+     *         Possible status codes:
+     *         |HostapdStatusCode.SUCCESS|,
+     *         |HostapdStatusCode.FAILURE_ARGS_INVALID|,
+     *         |HostapdStatusCode.FAILURE_UNKNOWN|,
+     *         |HostapdStatusCode.FAILURE_IFACE_EXISTS|
+     */
+    addAccessPoint_1_1(IfaceParams ifaceParams, NetworkParams nwParams)
+        generates(HostapdStatus status);
+
+    /**
      * Register for callbacks from the hostapd service.
      *
      * These callbacks are invoked for global events that are not specific