V4L/DVB (4729): Fix VIDIOC_G_FMT for NTSC in cx25840.

VIDIOC_G_FMT returned the sliced VBI types in the wrong lines for NTSC
(three lines too low).
Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/cx25840/cx25840-vbi.c

@@ -235,6 +235,7 @@ int cx25840_vbi(struct i2c_client *client, unsigned int cmd, void *arg)
 			0, 0, V4L2_SLICED_VPS, 0, 0,	/* 9 */
 			0, 0, 0, 0
 		};
+		int is_pal = !(cx25840_get_v4lstd(client) & V4L2_STD_525_60);
 		int i;
 
 		fmt = arg;
@@ -246,6 +247,7 @@ int cx25840_vbi(struct i2c_client *client, unsigned int cmd, void *arg)
 		if ((cx25840_read(client, 0x404) & 0x10) == 0)
 			break;
 
+		if (is_pal) {
 			for (i = 7; i <= 23; i++) {
 				u8 v = cx25840_read(client, 0x424 + i - 7);
 
@@ -254,6 +256,17 @@ int cx25840_vbi(struct i2c_client *client, unsigned int cmd, void *arg)
 				svbi->service_set |=
 					svbi->service_lines[0][i] | svbi->service_lines[1][i];
 			}
+		}
+		else {
+			for (i = 10; i <= 21; i++) {
+				u8 v = cx25840_read(client, 0x424 + i - 10);
+
+				svbi->service_lines[0][i] = lcr2vbi[v >> 4];
+				svbi->service_lines[1][i] = lcr2vbi[v & 0xf];
+				svbi->service_set |=
+					svbi->service_lines[0][i] | svbi->service_lines[1][i];
+			}
+		}
 		break;
 	}