media: allegro: add config blob for channel

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Firmware versions >= 2019.2 do not configure the channel via the mailbox
interface anymore, but use a separate chunk of memory that is only
referenced by the message. As the configuration must be in a format that
is understood by the firmware and this format can change between
firmware versions, handle it similar to the message and treat is as a
blob.

In order to support both methods in the driver, always use a separate
blob for the channel configuration and copy that blob into the mailbox
if the firmware requires it and otherwise reference it.

Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

...

This commit is contained in:

Michael Tretter 2020-07-13 16:42:25 +02:00 • committed by Mauro Carvalho Chehab

parent d30e841216

commit c4756d8774

3 changed files with 39 additions and 8 deletions

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20

drivers/staging/media/allegro-dvt/allegro-core.c

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18

drivers/staging/media/allegro-dvt/allegro-mail.c

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9

drivers/staging/media/allegro-dvt/allegro-mail.h

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