Commit 5cdd19bb authored by Krzysztof Hałasa's avatar Krzysztof Hałasa Committed by Mauro Carvalho Chehab
Browse files

media: TDA1997x: report -ENOLINK after disconnecting HDMI source 



The TD1997x chip retains vper, hper and hsper register values when the
HDMI source is disconnected. Use a different means of checking if the
link is still valid.

Signed-off-by: default avatarKrzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+huawei@kernel.org>
parent 7dee1030

drivers/media/i2c/tda1997x.c

+2 −1
Original line number Diff line number Diff line
@@ -1107,7 +1107,8 @@ tda1997x_detect_std(struct tda1997x_state *state, 
	hper = io_read16(sd, REG_H_PER) & MASK_HPER;

	hsper = io_read16(sd, REG_HS_WIDTH) & MASK_HSWIDTH;

	v4l2_dbg(1, debug, sd, "Signal Timings: %u/%u/%u\n", vper, hper, hsper);

	if (!vper || !hper || !hsper)



	if (!state->input_detect[0] && !state->input_detect[1])

		return -ENOLINK;



	for (i = 0; v4l2_dv_timings_presets[i].bt.width; i++) {