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authorKrzysztof Hałasa <khalasa@piap.pl>2021-07-26 12:49:30 +0200
committerMauro Carvalho Chehab <mchehab+huawei@kernel.org>2021-08-04 14:43:52 +0200
commit5cdd19bbad75f6cf1c44ac494b92a3b8d8826001 (patch)
treeaff822dabf4378e4dc77254f136d0f151eb6f5f0
parent7dee1030871a48d4f3c5a74227a4b4188463479a (diff)
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: Krzysztof Hałasa <khalasa@piap.pl> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
-rw-r--r--drivers/media/i2c/tda1997x.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/media/i2c/tda1997x.c b/drivers/media/i2c/tda1997x.c
index 98b7c39e3e9b..6070aaf0b32e 100644
--- a/drivers/media/i2c/tda1997x.c
+++ b/drivers/media/i2c/tda1997x.c
@@ -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++) {

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