[media] v4l2-dv-timings: support interlaced in v4l2_print_dv_timings

The v4l2_print_dv_timings() didn't log the interlaced format correctly. The timings
for the bottom field weren't logged and the fields per second value was half of what
it should have been.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/v4l2-core/v4l2-dv-timings.c

@@ -262,6 +262,8 @@ void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix,
 
 	htot = V4L2_DV_BT_FRAME_WIDTH(bt);
 	vtot = V4L2_DV_BT_FRAME_HEIGHT(bt);
+	if (bt->interlaced)
+		vtot /= 2;
 
 	if (prefix == NULL)
 		prefix = "";
@@ -282,6 +284,11 @@ void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix,
 			dev_prefix, bt->vfrontporch,
 			(bt->polarities & V4L2_DV_VSYNC_POS_POL) ? "+" : "-",
 			bt->vsync, bt->vbackporch);
+	if (bt->interlaced)
+		pr_info("%s: vertical bottom field: fp = %u, %ssync = %u, bp = %u\n",
+			dev_prefix, bt->il_vfrontporch,
+			(bt->polarities & V4L2_DV_VSYNC_POS_POL) ? "+" : "-",
+			bt->il_vsync, bt->il_vbackporch);
 	pr_info("%s: pixelclock: %llu\n", dev_prefix, bt->pixelclock);
 	pr_info("%s: flags (0x%x):%s%s%s%s%s\n", dev_prefix, bt->flags,
 			(bt->flags & V4L2_DV_FL_REDUCED_BLANKING) ?