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: Krzysztof Hałasa <khalasa@piap.pl>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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++) {