media: cros-ec-cec: Support multiple ports in set/get host commands

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Reuse the top four bits of the cmd field to specify the port number.
The reason for doing this as opposed to adding a separate uint8_t field
is it avoids the need to add new versions of these commands. The change
is backwards compatible since these bits were previously always zero, so
the default behaviour is to always operate on port 0.

Signed-off-by: Reka Norman <rekanorman@chromium.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

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Reka Norman 2023-08-25 12:43:56 +10:00 • committed by Hans Verkuil

parent 4d0e179a42

commit e90bd1fe7c

2 changed files with 8 additions and 2 deletions

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2

drivers/media/cec/platform/cros-ec/cros-ec-cec.c

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8

include/linux/platform_data/cros_ec_commands.h

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