diff -r -d -N -U4 v4l-dvb-a79dd2ae4d0e.old/linux/drivers/media/video/cx88/cx88-video.c v4l-dvb-a79dd2ae4d0e/linux/drivers/media/video/cx88/cx88-video.c
--- v4l-dvb-a79dd2ae4d0e.old/linux/drivers/media/video/cx88/cx88-video.c	2010-03-23 03:39:52.000000000 +0100
+++ v4l-dvb-a79dd2ae4d0e/linux/drivers/media/video/cx88/cx88-video.c	2010-03-23 19:07:26.000000000 +0100
@@ -220,9 +220,24 @@
 		.off                   = 0,
 		.reg                   = MO_UV_SATURATION,
 		.mask                  = 0x00ff,
 		.shift                 = 0,
-	},{
+	}, {
+		.v = {
+			.id            = V4L2_CID_SHARPNESS,
+			.name          = "Sharpness",
+			.minimum       = 0,
+			.maximum       = 9,
+			.default_value = 0x0,
+			.type          = V4L2_CTRL_TYPE_INTEGER,
+		},
+		.off		       = 0,
+		/* NOTE: the value is converted and written to both even
+		   and odd registers in the code */
+		.reg                   = MO_FILTER_ODD,
+		.mask                  = 7 << 7,
+		.shift                 = 7,
+	}, {
 		.v = {
 			.id            = V4L2_CID_CHROMA_AGC,
 			.name          = "Chroma AGC",
 			.minimum       = 0,
@@ -300,8 +315,9 @@
 	V4L2_CID_HUE,
 	V4L2_CID_AUDIO_VOLUME,
 	V4L2_CID_AUDIO_BALANCE,
 	V4L2_CID_AUDIO_MUTE,
+	V4L2_CID_SHARPNESS,
 	V4L2_CID_CHROMA_AGC,
 	V4L2_CID_COLOR_KILLER,
 	0
 };
@@ -1187,8 +1203,13 @@
 		break;
 	case V4L2_CID_AUDIO_VOLUME:
 		ctl->value = 0x3f - (value & 0x3f);
 		break;
+	case V4L2_CID_SHARPNESS:
+		ctl->value = (value & 0x0380) >> 6;
+		ctl->value = (ctl->value < 8 ? 0 : (ctl->value - 6))
+			     | ((cx_read(MO_HTOTAL) & 0x0800) >> 11);
+		break;
 	default:
 		ctl->value = ((value + (c->off << c->shift)) & c->mask) >> c->shift;
 		break;
 	}
@@ -1246,8 +1267,16 @@
 			value=(value*0x5a)/0x7f<<8|value;
 		}
 		mask=0xffff;
 		break;
+	case V4L2_CID_SHARPNESS:
+		/* use 4xFsc or square pixel notch filter */
+		cx_andor(MO_HTOTAL, 0x1800, (ctl->value & 1) << 11);
+		/* 0b000, 0b100, 0b101, 0b110, or 0b111 */
+		value = (ctl->value < 2 ? 0 : (((ctl->value + 6) & 0x0E) << 6));
+		/* needs to be set for both fields */
+		cx_andor(MO_FILTER_EVEN, mask, value);
+		break;
 	case V4L2_CID_CHROMA_AGC:
 		/* Do not allow chroma AGC to be enabled for SECAM */
 		value = ((ctl->value - c->off) << c->shift) & c->mask;
 		if (core->tvnorm & V4L2_STD_SECAM && value)