Re: [PATCHv9 07/15] cec: add HDMI CEC framework

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On Mon, Sep 07, 2015 at 03:44:36PM +0200, Hans Verkuil wrote:
> From: Hans Verkuil <hans.verkuil@xxxxxxxxx>
> 
> The added HDMI CEC framework provides a generic kernel interface for
> HDMI CEC devices.
> 
> Signed-off-by: Hans Verkuil <hansverk@xxxxxxxxx>
> [k.debski@xxxxxxxxxxx: Merged CEC Updates commit by Hans Verkuil]
> [k.debski@xxxxxxxxxxx: Merged Update author commit by Hans Verkuil]
> [k.debski@xxxxxxxxxxx: change kthread handling when setting logical
> address]
> [k.debski@xxxxxxxxxxx: code cleanup and fixes]
> [k.debski@xxxxxxxxxxx: add missing CEC commands to match spec]
> [k.debski@xxxxxxxxxxx: add RC framework support]
> [k.debski@xxxxxxxxxxx: move and edit documentation]
> [k.debski@xxxxxxxxxxx: add vendor id reporting]
> [k.debski@xxxxxxxxxxx: add possibility to clear assigned logical
> addresses]
> [k.debski@xxxxxxxxxxx: documentation fixes, clenaup and expansion]
> [k.debski@xxxxxxxxxxx: reorder of API structs and add reserved fields]
> [k.debski@xxxxxxxxxxx: fix handling of events and fix 32/64bit timespec
> problem]
> [k.debski@xxxxxxxxxxx: add cec.h to include/uapi/linux/Kbuild]
> [k.debski@xxxxxxxxxxx: add sequence number handling]
> [k.debski@xxxxxxxxxxx: add passthrough mode]
> [k.debski@xxxxxxxxxxx: fix CEC defines, add missing CEC 2.0 commands]
> minor additions]
> Signed-off-by: Kamil Debski <kamil@xxxxxxxxx>
> Signed-off-by: Hans Verkuil <hans.verkuil@xxxxxxxxx>

I don't see much in the way of support for source devices in this:
how do we handle hotplug of the sink, and how to do we configure the
physical address?

Surely you aren't proposing that drivers should write directly to
adap->phys_addr without calling some notification function that the
physical address has changed?

Please can you give some guidance on how a HDMI source bridge driver
should deal with these issues.  Thanks.

-- 
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.
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