Re: [PATCHv8 2/2] mailbox: Introduce framework for mailbox

[Sudeep Holla <sudeep.holla-5wv7dgnIgG8@public.gmane.org>]

On 11/07/14 10:35, Jassi Brar wrote:
> 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 <jaswinder.singh-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
> ---
>   .../devicetree/bindings/mailbox/mailbox.txt        |  33 ++
>   Documentation/mailbox.txt                          | 107 +++++
>   MAINTAINERS                                        |   8 +
>   drivers/mailbox/Makefile                           |   4 +
>   drivers/mailbox/mailbox.c                          | 490 +++++++++++++++++++++
>   include/linux/mailbox_client.h                     |  48 ++
>   include/linux/mailbox_controller.h                 | 128 ++++++
>   7 files changed, 818 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/mailbox/mailbox.txt
>   create mode 100644 Documentation/mailbox.txt
>   create mode 100644 drivers/mailbox/mailbox.c
>   create mode 100644 include/linux/mailbox_client.h
>   create mode 100644 include/linux/mailbox_controller.h
>
> diff --git a/Documentation/devicetree/bindings/mailbox/mailbox.txt b/Documentation/devicetree/bindings/mailbox/mailbox.txt
> new file mode 100644
> index 0000000..3f00955
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mailbox/mailbox.txt
> @@ -0,0 +1,33 @@
> +* Generic Mailbox Controller and client driver bindings
> +
> +Generic binding to provide a way for Mailbox controller drivers to
> +assign appropriate mailbox channel to client drivers.
> +
> +* Mailbox Controller
> +
> +Required property:
> +- #mbox-cells: Must be at least 1. Number of cells in a mailbox
> +               specifier.
> +
> +Example:
> +       mailbox: mailbox {
> +               ...
> +               #mbox-cells = <1>;
> +       };
> +
> +
> +* Mailbox Client
> +
> +Required property:
> +- mbox: List of phandle and mailbox channel specifier.
> +
> +- mbox-names: List of identifier strings for each mailbox channel
> +               required by the client.
> +

IMO the mailbox names are more associated with the controller channels/
mailbox rather than the clients using it. Does it make sense to move
this under controller. It also avoid each client replicating the names.

Regards,
Sudeep

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