media: rkisp1: debug: Collect input status by sampling ISP_FLAGS_SHD

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The ISP_FLAGS_SHD register exposes the ISP parallel input signals (data
and synchronization) in real time. This can help debugging when the
device doesn't output any image. Sample the register 10000 times with a
1µs delay and expose the result through debugfs.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

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Laurent Pinchart 2022-02-26 07:57:09 +00:00 • committed by Mauro Carvalho Chehab

parent fd3608fe6b

commit cbb819c363

2 changed files with 63 additions and 0 deletions

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54

drivers/media/platform/rockchip/rkisp1/rkisp1-debug.c

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9

drivers/media/platform/rockchip/rkisp1/rkisp1-regs.h

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