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SubjectRe: [PATCHv7 2/5] mailbox: Introduce framework for mailbox
Jassi Brar <> writes:

> On 18 June 2014 05:57, Kevin Hilman <> wrote:
>> Jassi Brar <> writes:
>>> Introduce common framework for client/protocol drivers and
>>> controller drivers of Inter-Processor-Communication (IPC).
>>> Client driver developers should have a look at
>>> include/linux/mailbox_client.h to understand the part of
>>> the API exposed to client drivers.
>>> Similarly controller driver developers should have a look
>>> at include/linux/mailbox_controller.h
>>> Signed-off-by: Jassi Brar <>
>> This series is shaping up nicely. The one thing I think it would
>> benefit from, being a new common framework is something under
>> Documentation giving a brief overview, but more importantly some
>> example code snippets of a mailbox client using the API, and maybe an
>> example usage of the controller API as well.
>> Not only will that guide developers who want to use/implement this API
>> on their platforms, it will also aid reviewers.
> I have been trying to get it upstream for quite some time now because
> my platform depends upon it. I am planning to submit my platform
> support which should have a client and controller side of the mailbox
> API.

Having a reference implementation is great, but I don't think that
removes the need for a bit of Documentation when introducing a new

It's pretty common to see new IPC mechanisms posted and being able to
point somone to this framework and something under Documentation/* would
be a great help in getting more users of the framework.

> Though I am told the API (until v4 at least) supported usecases for 5
> different platforms.

That's great.

I sure would like to see some more Reviewed-by tags from those folks to
confirm that those starting to use it think it's on the right track.


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