From a0e4c3a6705764d9c17e7cdc948b351a1eeced02 Mon Sep 17 00:00:00 2001
From: Michael Hunold <devnull@localhost>
Date: Tue, 1 Jul 2003 10:13:26 +0000
Subject: - capturing alternating fields to different buffers works now

---
 linux/drivers/media/common/saa7146_video.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

(limited to 'linux/drivers/media/common/saa7146_video.c')

diff --git a/linux/drivers/media/common/saa7146_video.c b/linux/drivers/media/common/saa7146_video.c
index d67282461..4479d7189 100644
--- a/linux/drivers/media/common/saa7146_video.c
+++ b/linux/drivers/media/common/saa7146_video.c
@@ -187,12 +187,18 @@ static int try_fmt(struct saa7146_fh *fh, struct v4l2_format *f)
 				: V4L2_FIELD_BOTTOM;
 		}
 		switch (field) {
+		case V4L2_FIELD_ALTERNATE: {
+			vv->last_field = V4L2_FIELD_TOP;
+			maxh = maxh / 2;
+			break;
+		}
 		case V4L2_FIELD_TOP:
 		case V4L2_FIELD_BOTTOM:
-		case V4L2_FIELD_ALTERNATE:
+			vv->last_field = V4L2_FIELD_INTERLACED;
 			maxh = maxh / 2;
 			break;
 		case V4L2_FIELD_INTERLACED:
+			vv->last_field = V4L2_FIELD_INTERLACED;
 			break;
 		default: {
 			DEB_D(("no known field mode '%d'.\n",field));
-- 
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