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| author |   Dafna Hirschfeld <dafna.hirschfeld@collabora.com> | 2020-09-22 13:33:57 +0200 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-09-27 11:34:28 +0200 |
| commit | 8524fa22fd2f49ca39834fe93c952ddac1c43750 (patch) | |
| tree | fe003b61a29aed21b622680ed80af22b29057fa2 /drivers/staging/media/rkisp1/rkisp1-dev.c | |
| parent | media: staging: rkisp1: remove atomic operations for frame sequence (diff) | |
| download | wireguard-linux-8524fa22fd2f49ca39834fe93c952ddac1c43750.tar.xz wireguard-linux-8524fa22fd2f49ca39834fe93c952ddac1c43750.zip | |
media: staging: rkisp1: isp: add a warning and debugfs var for irq delay
The signal RKISP1_CIF_ISP_FRAME is set when the ISP completes
outputting the frame to the next block in the pipeline.
In order to keep buffer synchronization we assume that the
RKISP1_CIF_ISP_V_START signal never arrives together with the
RKISP1_CIF_ISP_FRAME signal.
In case those signals arrive together then the code is not able to
tell if the RKISP1_CIF_ISP_FRAME signal relates to the frame of
the current v-start or the previous. This patch adds a WARN_ONCE
and a debugfs var to catch it.
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/staging/media/rkisp1/rkisp1-dev.c')
| -rw-r--r-- | drivers/staging/media/rkisp1/rkisp1-dev.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/staging/media/rkisp1/rkisp1-dev.c b/drivers/staging/media/rkisp1/rkisp1-dev.c index d85ac10e5494..91584695804b 100644 --- a/drivers/staging/media/rkisp1/rkisp1-dev.c +++ b/drivers/staging/media/rkisp1/rkisp1-dev.c @@ -444,6 +444,8 @@ static void rkisp1_debug_init(struct rkisp1_device *rkisp1) &debug->img_stabilization_size_error); debugfs_create_ulong("inform_size_error", 0444, debug->debugfs_dir, &debug->inform_size_error); + debugfs_create_ulong("irq_delay", 0444, debug->debugfs_dir, + &debug->irq_delay); debugfs_create_ulong("mipi_error", 0444, debug->debugfs_dir, &debug->mipi_error); debugfs_create_ulong("stats_error", 0444, debug->debugfs_dir, |