media: ti-vpe: cal: allocate pix proc dynamically

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CAL has 4 pixel processing units but the units are not needed e.g. for
metadata. As we could be capturing 4 pixel streams and 4 metadata
streams, i.e. using 8 DMA contexts, we cannot assign a pixel processing
unit to every DMA context. Instead we need to reserve a pixel processing
unit only when needed.

Add functions to reserve and release a pix proc unit, and use them in
cal_ctx_prepare/unprepare. Note that for the time being we still always
reserve a pix proc unit.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

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Tomi Valkeinen 2021-06-14 13:23:27 +02:00 • committed by Mauro Carvalho Chehab

parent 38f7435f13

commit 4cb3a0f389

2 changed files with 44 additions and 1 deletions

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43

drivers/media/platform/ti-vpe/cal.c

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2

drivers/media/platform/ti-vpe/cal.h

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