dprintk("\n");
 
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 0);
+
        /* Initialize the frontend */
        rc = mb86a20s_writeregdata(state, mb86a20s_init);
        if (rc < 0)
                        return rc;
        }
 
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 1);
+
        return 0;
 }
 
 
        dprintk("\n");
 
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 0);
+
        /* Does a binary search to get RF strength */
        rf_max = 0xfff;
        rf_min = 0;
 
        dprintk("signal strength = %d\n", *strength);
 
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 1);
+
        return 0;
 }
 
        dprintk("\n");
        *status = 0;
 
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 0);
        val = mb86a20s_readreg(state, 0x0a) & 0xf;
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 1);
 
        if (val >= 2)
                *status |= FE_HAS_SIGNAL;
 
        dprintk("\n");
 
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 1);
        fe->ops.tuner_ops.set_params(fe, p);
+
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 0);
        rc = mb86a20s_writeregdata(state, mb86a20s_reset_reception);
+       if (fe->ops.i2c_gate_ctrl)
+               fe->ops.i2c_gate_ctrl(fe, 1);
 
        return rc;
 }
 
                        .amux = 2,
                },
        },
+       [SAA7134_BOARD_KWORLD_PCI_SBTVD_FULLSEG] = {
+               .name           = "Kworld PCI SBTVD/ISDB-T Full-Seg Hybrid",
+               .audio_clock    = 0x00187de7,
+               .tuner_type     = TUNER_NXP_TDA18271,   /* TUNER_PHILIPS_TDA8290 */
+               .radio_type     = UNSET,
+               .tuner_addr     = 0x60,
+               .radio_addr     = ADDR_UNSET,
+               .gpiomask       = 0x8e054000,
+               .mpeg           = SAA7134_MPEG_DVB,
+               .inputs = { {
+                       .name   = name_tv,
+                       .vmux   = 1,
+                       .amux   = TV,
+                       .tv     = 1,
+#if 0  /* FIXME */
+               }, {
+                       .name   = name_comp1,
+                       .vmux   = 3,
+                       .amux   = LINE1,
+                       .gpio   = 0x200,
+               }, {
+                       .name   = name_svideo,
+                       .vmux   = 8,
+                       .amux   = LINE1,
+                       .gpio   = 0x200,
+#endif
+               } },
+#if 0
+               .radio = {
+                       .name   = name_radio,
+                       .vmux   = 1,
+                       .amux   = LINE1,
+                       .gpio   = 0x100,
+               },
+#endif
+               .mute = {
+                       .name = name_mute,
+                       .vmux = 0,
+                       .amux = TV,
+               },
+       },
        [SAA7134_BOARD_AVERMEDIA_GO_007_FM_PLUS] = {
                .name           = "Avermedia AVerTV GO 007 FM Plus",
                .audio_clock    = 0x00187de7,
                .subvendor    = 0x17de,
                .subdevice    = 0x7128,
                .driver_data  = SAA7134_BOARD_KWORLD_PLUS_TV_ANALOG,
+       }, {
+               .vendor       = PCI_VENDOR_ID_PHILIPS,
+               .device       = PCI_DEVICE_ID_PHILIPS_SAA7133,
+               .subvendor    = 0x17de,
+               .subdevice    = 0xb136,
+               .driver_data  = SAA7134_BOARD_KWORLD_PCI_SBTVD_FULLSEG,
        }, {
                .vendor       = PCI_VENDOR_ID_PHILIPS,
                .device       = PCI_DEVICE_ID_PHILIPS_SAA7133,
        return 0;
 }
 
+static inline int saa7134_kworld_sbtvd_toggle_agc(struct saa7134_dev *dev,
+                                                 enum tda18271_mode mode)
+{
+       /* toggle AGC switch through GPIO 27 */
+       switch (mode) {
+       case TDA18271_ANALOG:
+               saa7134_set_gpio(dev, 27, 0);
+               break;
+       case TDA18271_DIGITAL:
+               saa7134_set_gpio(dev, 27, 1);
+               break;
+       default:
+               return -EINVAL;
+       }
+       return 0;
+}
+
 static int saa7134_tda8290_18271_callback(struct saa7134_dev *dev,
                                          int command, int arg)
 {
                case SAA7134_BOARD_HAUPPAUGE_HVR1120:
                        ret = saa7134_tda18271_hvr11x0_toggle_agc(dev, arg);
                        break;
+               case SAA7134_BOARD_KWORLD_PCI_SBTVD_FULLSEG:
+                       ret = saa7134_kworld_sbtvd_toggle_agc(dev, arg);
+                       break;
                default:
                        break;
                }
        case SAA7134_BOARD_HAUPPAUGE_HVR1150:
        case SAA7134_BOARD_HAUPPAUGE_HVR1120:
        case SAA7134_BOARD_AVERMEDIA_M733A:
+       case SAA7134_BOARD_KWORLD_PCI_SBTVD_FULLSEG:
                /* tda8290 + tda18271 */
                ret = saa7134_tda8290_18271_callback(dev, command, arg);
                break;
                                       dev->name);
                break;
        }
+       case SAA7134_BOARD_KWORLD_PCI_SBTVD_FULLSEG:
+       {
+               struct i2c_msg msg = { .addr = 0x4b, .flags = 0 };
+               int i;
+               static u8 buffer[][2] = {
+                       {0x30, 0x31},
+                       {0xff, 0x00},
+                       {0x41, 0x03},
+                       {0x41, 0x1a},
+                       {0xff, 0x02},
+                       {0x34, 0x00},
+                       {0x45, 0x97},
+                       {0x45, 0xc1},
+               };
+
+               saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x0000);
+               saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x0000);
+               saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x0000);
+               saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x4000);
+               saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x0000);
+               saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x4000);
+               saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x4000);
+               saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x4000);
+               saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x0000);
+               saa_writel(SAA7134_GPIO_GPMODE0 >> 2, 0x4000);
+               saa_writel(SAA7134_GPIO_GPSTATUS0 >> 2, 0x4000);
+
+               /*
+                * FIXME: identify what device is at addr 0x4b and what means
+                * this initialization
+                */
+               for (i = 0; i < ARRAY_SIZE(buffer); i++) {
+                       msg.buf = &buffer[i][0];
+                       msg.len = ARRAY_SIZE(buffer[0]);
+                       if (i2c_transfer(&dev->i2c_adap, &msg, 1) != 1)
+                               printk(KERN_WARNING
+                                      "%s: Unable to enable tuner(%i).\n",
+                                      dev->name, i);
+               }
+               break;
+       }
        } /* switch() */
 
        /* initialize tuner */