staging: media: tegra-video: vi: improve logic of source requesting

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By default tegra_channel_get_remote_csi_subdev returns next device in pipe
assuming it is CSI but in case of Tegra20 and Tegra30 it can also be VIP
or even HOST.

Define tegra_channel_get_remote_csi_subdev within CSI and add check if
returned device is actually CSI by comparing subdevice operations.

Previous tegra_channel_get_remote_csi_subdev definition in VI rename to
tegra_channel_get_remote_bridge_subdev and use it only in VI driver since
core VI driver does not care about source and does not call any specific
functions.

Tested-by: Luca Ceresoli <luca.ceresoli@bootlin.com> # tegra20, parallel camera
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>

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This commit is contained in:

Svyatoslav Ryhel 2026-03-03 10:42:29 +02:00 • committed by Hans Verkuil

parent c888c4c834

commit 6017e97f50

2 changed files with 23 additions and 7 deletions

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16

drivers/staging/media/tegra-video/csi.c

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14

drivers/staging/media/tegra-video/vi.c

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