#include "dib0070.h"
 #include "lgs8gxx.h"
 #include "atbm8830.h"
+#include "si2168.h"
+#include "si2157.h"
 
 /* Max transfer size done by I2C transfer functions */
 #define MAX_XFER_SIZE  64
        }
 }
 
+static int cxusb_tt_ct2_4400_gpio_tuner(struct dvb_usb_device *d, int onoff)
+{
+       u8 o[2], i;
+       int rc;
+
+       o[0] = 0x83;
+       o[1] = onoff;
+       rc = cxusb_ctrl_msg(d, CMD_GPIO_WRITE, o, 2, &i, 1);
+
+       if (rc) {
+               deb_info("gpio_write failed.\n");
+               return -EIO;
+       }
+       return 0;
+}
+
 /* I2C */
 static int cxusb_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
                          int num)
        return 0;
 }
 
+static int cxusb_tt_ct2_4400_rc_query(struct dvb_usb_device *d)
+{
+       u8 i[2];
+       int ret;
+       u32 cmd, keycode;
+       u8 rc5_cmd, rc5_addr, rc5_toggle;
+
+       ret = cxusb_ctrl_msg(d, 0x10, NULL, 0, i, 2);
+       if (ret)
+               return ret;
+
+       cmd = (i[0] << 8) | i[1];
+
+       if (cmd != 0xffff) {
+               rc5_cmd = cmd & 0x3F; /* bits 1-6 for command */
+               rc5_addr = (cmd & 0x07C0) >> 6; /* bits 7-11 for address */
+               rc5_toggle = (cmd & 0x0800) >> 11; /* bit 12 for toggle */
+               keycode = (rc5_addr << 8) | rc5_cmd;
+               rc_keydown(d->rc_dev, keycode, rc5_toggle);
+       }
+
+       return 0;
+}
+
 static struct rc_map_table rc_map_dvico_mce_table[] = {
        { 0xfe02, KEY_TV },
        { 0xfe0e, KEY_MP3 },
        return 0;
 }
 
+static int cxusb_tt_ct2_4400_attach(struct dvb_usb_adapter *adap)
+{
+       struct dvb_usb_device *d = adap->dev;
+       struct cxusb_state *st = d->priv;
+       struct i2c_adapter *adapter;
+       struct i2c_client *client_demod;
+       struct i2c_client *client_tuner;
+       struct i2c_board_info info;
+       struct si2168_config si2168_config;
+       struct si2157_config si2157_config;
+
+       /* reset the tuner */
+       if (cxusb_tt_ct2_4400_gpio_tuner(d, 0) < 0) {
+               err("clear tuner gpio failed");
+               return -EIO;
+       }
+       msleep(100);
+       if (cxusb_tt_ct2_4400_gpio_tuner(d, 1) < 0) {
+               err("set tuner gpio failed");
+               return -EIO;
+       }
+       msleep(100);
+
+       /* attach frontend */
+       si2168_config.i2c_adapter = &adapter;
+       si2168_config.fe = &adap->fe_adap[0].fe;
+       memset(&info, 0, sizeof(struct i2c_board_info));
+       strlcpy(info.type, "si2168", I2C_NAME_SIZE);
+       info.addr = 0x64;
+       info.platform_data = &si2168_config;
+       request_module(info.type);
+       client_demod = i2c_new_device(&d->i2c_adap, &info);
+       if (client_demod == NULL || client_demod->dev.driver == NULL)
+               return -ENODEV;
+
+       if (!try_module_get(client_demod->dev.driver->owner)) {
+               i2c_unregister_device(client_demod);
+               return -ENODEV;
+       }
+
+       st->i2c_client_demod = client_demod;
+
+       /* attach tuner */
+       si2157_config.fe = adap->fe_adap[0].fe;
+       memset(&info, 0, sizeof(struct i2c_board_info));
+       strlcpy(info.type, "si2157", I2C_NAME_SIZE);
+       info.addr = 0x60;
+       info.platform_data = &si2157_config;
+       request_module(info.type);
+       client_tuner = i2c_new_device(adapter, &info);
+       if (client_tuner == NULL || client_tuner->dev.driver == NULL) {
+               module_put(client_demod->dev.driver->owner);
+               i2c_unregister_device(client_demod);
+               return -ENODEV;
+       }
+       if (!try_module_get(client_tuner->dev.driver->owner)) {
+               i2c_unregister_device(client_tuner);
+               module_put(client_demod->dev.driver->owner);
+               i2c_unregister_device(client_demod);
+               return -ENODEV;
+       }
+
+       st->i2c_client_tuner = client_tuner;
+
+       return 0;
+}
+
 /*
  * DViCO has shipped two devices with the same USB ID, but only one of them
  * needs a firmware download.  Check the device class details to see if they
 static struct dvb_usb_device_properties cxusb_aver_a868r_properties;
 static struct dvb_usb_device_properties cxusb_d680_dmb_properties;
 static struct dvb_usb_device_properties cxusb_mygica_d689_properties;
+static struct dvb_usb_device_properties cxusb_tt_ct2_4400_properties;
 
 static int cxusb_probe(struct usb_interface *intf,
                       const struct usb_device_id *id)
                                     THIS_MODULE, NULL, adapter_nr) ||
            0 == dvb_usb_device_init(intf, &cxusb_mygica_d689_properties,
                                     THIS_MODULE, NULL, adapter_nr) ||
+           0 == dvb_usb_device_init(intf, &cxusb_tt_ct2_4400_properties,
+                                    THIS_MODULE, NULL, adapter_nr) ||
            0)
                return 0;
 
        return -EINVAL;
 }
 
+static void cxusb_disconnect(struct usb_interface *intf)
+{
+       struct dvb_usb_device *d = usb_get_intfdata(intf);
+       struct cxusb_state *st = d->priv;
+       struct i2c_client *client;
+
+       /* remove I2C client for tuner */
+       client = st->i2c_client_tuner;
+       if (client) {
+               module_put(client->dev.driver->owner);
+               i2c_unregister_device(client);
+       }
+
+       /* remove I2C client for demodulator */
+       client = st->i2c_client_demod;
+       if (client) {
+               module_put(client->dev.driver->owner);
+               i2c_unregister_device(client);
+       }
+
+       dvb_usb_device_exit(intf);
+}
+
 static struct usb_device_id cxusb_table [] = {
        { USB_DEVICE(USB_VID_MEDION, USB_PID_MEDION_MD95700) },
        { USB_DEVICE(USB_VID_DVICO, USB_PID_DVICO_BLUEBIRD_LG064F_COLD) },
        { USB_DEVICE(USB_VID_DVICO, USB_PID_DVICO_BLUEBIRD_DUAL_4_REV_2) },
        { USB_DEVICE(USB_VID_CONEXANT, USB_PID_CONEXANT_D680_DMB) },
        { USB_DEVICE(USB_VID_CONEXANT, USB_PID_MYGICA_D689) },
+       { USB_DEVICE(USB_VID_TECHNOTREND, USB_PID_TECHNOTREND_TVSTICK_CT2_4400) },
        {}              /* Terminating entry */
 };
 MODULE_DEVICE_TABLE (usb, cxusb_table);
        }
 };
 
+static struct dvb_usb_device_properties cxusb_tt_ct2_4400_properties = {
+       .caps = DVB_USB_IS_AN_I2C_ADAPTER,
+
+       .usb_ctrl         = CYPRESS_FX2,
+
+       .size_of_priv     = sizeof(struct cxusb_state),
+
+       .num_adapters = 1,
+       .adapter = {
+               {
+               .num_frontends = 1,
+               .fe = {{
+                       .streaming_ctrl   = cxusb_streaming_ctrl,
+                       /* both frontend and tuner attached in the
+                          same function */
+                       .frontend_attach  = cxusb_tt_ct2_4400_attach,
+
+                       /* parameter for the MPEG2-data transfer */
+                       .stream = {
+                               .type = USB_BULK,
+                               .count = 8,
+                               .endpoint = 0x82,
+                               .u = {
+                                       .bulk = {
+                                               .buffersize = 4096,
+                                       }
+                               }
+                       },
+               } },
+               },
+       },
+
+       .i2c_algo = &cxusb_i2c_algo,
+       .generic_bulk_ctrl_endpoint = 0x01,
+       .generic_bulk_ctrl_endpoint_response = 0x81,
+
+       .rc.core = {
+               .rc_codes       = RC_MAP_TT_1500,
+               .allowed_protos = RC_BIT_RC5,
+               .rc_query       = cxusb_tt_ct2_4400_rc_query,
+               .rc_interval    = 150,
+       },
+
+       .num_device_descs = 1,
+       .devices = {
+               {
+                       "TechnoTrend TVStick CT2-4400",
+                       { NULL },
+                       { &cxusb_table[20], NULL },
+               },
+       }
+};
+
 static struct usb_driver cxusb_driver = {
        .name           = "dvb_usb_cxusb",
        .probe          = cxusb_probe,
-       .disconnect     = dvb_usb_device_exit,
+       .disconnect     = cxusb_disconnect,
        .id_table       = cxusb_table,
 };