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Commit ddc7f72a authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files

[media] bt819: fix querystd 



Return V4L2_STD_UNKNOWN if no signal is detected.
Otherwise AND the standard mask with the detected standards.

Signed-off-by: default avatarHans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 7dd8fbbe

drivers/media/i2c/bt819.c

+5 −3
Original line number Diff line number Diff line
@@ -215,15 +215,17 @@ static int bt819_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd) 
	struct bt819 *decoder = to_bt819(sd);

	int status = bt819_read(decoder, 0x00);

	int res = V4L2_IN_ST_NO_SIGNAL;

	v4l2_std_id std;

	v4l2_std_id std = pstd ? *pstd : V4L2_STD_ALL;



	if ((status & 0x80))

		res = 0;

	else

		std = V4L2_STD_UNKNOWN;



	if ((status & 0x10))

		std = V4L2_STD_PAL;

		std &= V4L2_STD_PAL;

	else

		std = V4L2_STD_NTSC;

		std &= V4L2_STD_NTSC;

	if (pstd)

		*pstd = std;

	if (pstatus)