diff -N -U 5 -p -w -r linux-2.6.18/drivers/media/video/bt8xx/bttv-driver.c linux-2.6.18-lmlbt4x/drivers/media/video/bt8xx/bttv-driver.c
--- linux-2.6.18/drivers/media/video/bt8xx/bttv-driver.c	2006-10-19 22:04:35.000000000 +0400
+++ linux-2.6.18-lmlbt4x/drivers/media/video/bt8xx/bttv-driver.c	2006-11-07 19:34:01.000000000 +0300
@@ -2945,10 +2945,105 @@ static int bttv_do_ioctl(struct inode *i
 	case VIDIOC_G_FREQUENCY:
 	case VIDIOC_S_FREQUENCY:
 	case VIDIOC_LOG_STATUS:
 		return bttv_common_ioctls(btv,cmd,arg);
 
+	/* BEGIN  V4LGX GPIO Extensions *** ******************************** */
+        case BTTV_GGPIO:
+            if (btv->c.type == BTTV_BOARD_LMLBT4) {
+                int *sensor_value = (int*)arg;
+                printk(KERN_DEBUG "LMLBT4x read GPIO\n");
+                //*sensor_value = 0xAA;
+                *sensor_value = btread(BT848_GPIO_DATA);
+            }
+            else
+                return -ENOIOCTLCMD;
+            break;
+
+        case BTTV_SGPIO:
+            if (btv->c.type == BTTV_BOARD_LMLBT4) {
+                int *relay_value = (int*)arg;
+                printk(KERN_DEBUG "LMLBT4x write GPIO = %x\n",*relay_value);
+                btwrite(*relay_value,BT848_GPIO_DATA);
+            }
+            else
+                return -ENOIOCTLCMD;
+            break;
+
+        case BTTV_GSENSOR:
+            if (btv->c.type == BTTV_BOARD_LMLBT4)
+            {
+              struct bttv_sa* sensor = (struct bttv_sa*)arg;
+              int gpioword = btread(BT848_GPIO_DATA);
+              printk(KERN_DEBUG "LMLBT4x read sensor=%d\n",sensor->item);
+              sensor->bits = (gpioword >> 2) & 0x00F; /* FIXME - should be a mask */
+              sensor->nitems = 4; /* FIXME - should be a property of a card */
+              if (sensor->item >= sensor->nitems)
+              {
+                return -EINVAL;
+              }
+              sensor->avalue = (sensor->bits >> sensor->item) & 1;
+            }
+            else
+              return -ENOIOCTLCMD;
+            break;
+        case BTTV_GRELAY:
+            if (btv->c.type == BTTV_BOARD_LMLBT4)
+            {
+              struct bttv_sa* alarm = (struct bttv_sa*)arg;
+              int gpioword = btread(BT848_GPIO_DATA);
+              printk(KERN_DEBUG "LMLBT4x read alarm=%d\n",alarm->item);
+              alarm->bits = ((gpioword >> 6) & 0x003)  | ((gpioword >> 7) & 0x004);
+              /* FIXME - should be a mask */
+              alarm->nitems = 3; /* FIXME - should be a property of a card */
+              if (alarm->item >= alarm->nitems)
+              {
+                return -EINVAL;
+              }
+              alarm->avalue = (alarm->bits >> alarm->item) & 1;
+            }
+            else
+              return -ENOIOCTLCMD;
+            break;
+        case BTTV_SRELAY:
+            if (btv->c.type == BTTV_BOARD_LMLBT4)
+            {
+              struct bttv_sa* alarm = (struct bttv_sa*)arg;
+              int gpioword = btread(BT848_GPIO_DATA);
+              long int alarmBits;
+              printk(KERN_DEBUG "LMLBT4x write alarm=%d bits=%03lx value=%d\n",alarm->item,
+                     alarm->bits,alarm->avalue);
+              alarmBits = ((gpioword >> 6) & 0x003)  | ((gpioword >> 7) & 0x004);
+              /* FIXME - should be a mask */
+              alarm->nitems = 3; /* FIXME - should be a property of a card */
+              if (alarm->item >= alarm->nitems)
+              {
+                return -EINVAL;
+              }
+              switch (alarm->avalue)
+              {
+              case 0:
+                alarmBits &= ~((long int)1 << alarm->item);
+                break;
+              case 1:
+                alarmBits |=   (long int)1 << alarm->item;
+                break;
+              case -1:
+                alarmBits=alarm->bits;
+                break;
+              default:
+                return -EINVAL;
+              }
+              gpioword = ((alarmBits & 0x003) << 6) | ((alarmBits & 0x004) << 7);
+              btwrite(gpioword,BT848_GPIO_DATA);
+            }
+            else
+              return -ENOIOCTLCMD;
+            break;
+	/* END    V4LGX GPIO Extensions *** ******************************** */
+
+
 	default:
 		return -ENOIOCTLCMD;
 	}
 	return 0;
 
diff -N -U 5 -p -w -r linux-2.6.18/include/linux/videodev.h linux-2.6.18-lmlbt4x/include/linux/videodev.h
--- linux-2.6.18/include/linux/videodev.h	2006-10-19 22:05:10.000000000 +0400
+++ linux-2.6.18-lmlbt4x/include/linux/videodev.h	2006-11-07 18:16:30.000000000 +0300
@@ -226,10 +226,23 @@ struct video_code
 	char	loadwhat[16];	/* name or tag of file being passed */
 	int	datasize;
 	__u8	*data;
 };
 
+/* --------- Alarms/sensor I/O structure                     */
+struct bttv_sa {
+        int item; /* 0,1,...item-1; alarm to work on */
+        int nitems; /* number of items; for Get only */
+        long int bits; /* MSB ... i2 i1 i0 <-LSB */
+        int avalue; /* for Get returns status of item 
+                       for Set (for alarms only):
+                                    -1 - assign from bits, 
+                                     0 - set alarm_no OFF, 
+                                     1 - set alarm_no ON */
+};
+
+
 #define VIDIOCGCAP		_IOR('v',1,struct video_capability)	/* Get capabilities */
 #define VIDIOCGCHAN		_IOWR('v',2,struct video_channel)	/* Get channel info (sources) */
 #define VIDIOCSCHAN		_IOW('v',3,struct video_channel)	/* Set channel 	*/
 #define VIDIOCGTUNER		_IOWR('v',4,struct video_tuner)		/* Get tuner abilities */
 #define VIDIOCSTUNER		_IOW('v',5,struct video_tuner)		/* Tune the tuner for the current channel */
@@ -259,10 +272,18 @@ struct video_code
 #define	VIDIOCSVBIFMT		_IOW('v',29, struct vbi_format)		/* Set VBI information */
 
 
 #define BASE_VIDIOCPRIVATE	192		/* 192-255 are private */
 
+#define BTTV_SGPIO              _IOW('v', BASE_VIDIOCPRIVATE+44, int)
+#define BTTV_GGPIO              _IOR('v', BASE_VIDIOCPRIVATE+45, int)
+
+#define BTTV_SRELAY             _IOW('v', BASE_VIDIOCPRIVATE+46, struct bttv_sa)
+#define BTTV_GRELAY             _IOWR('v', BASE_VIDIOCPRIVATE+47, struct bttv_sa)
+
+#define BTTV_GSENSOR            _IOWR('v', BASE_VIDIOCPRIVATE+48, struct bttv_sa)
+
 /* VIDIOCSWRITEMODE */
 #define VID_WRITE_MPEG_AUD		0
 #define VID_WRITE_MPEG_VID		1
 #define VID_WRITE_OSD			2
 #define VID_WRITE_TTX			3