[PATCH v3 1/3] interconnect: Add generic on-chip interconnect API

[Michael Turquette]

Hi all,

On Fri, Oct 20, 2017 at 3:34 PM, Bjorn Andersson
<bjorn.andersson at linaro.org> wrote:
> On Fri 20 Oct 07:43 PDT 2017, Georgi Djakov wrote:
>
>> Hi,
>>
>> On 09/08/2017 08:18 PM, Georgi Djakov wrote:
>> > This patch introduce a new API to get requirements and configure the
>> > interconnect buses across the entire chipset to fit with the current demand.
>> >
>> > The API is using a consumer/provider-based model, where the providers are
>> > the interconnect buses and the consumers could be various drivers.
>> > The consumers request interconnect resources (path) between endpoints and
>> > set the desired constraints on this data flow path. The providers receive
>> > requests from consumers and aggregate these requests for all master-slave
>> > pairs on that path. Then the providers configure each participating in the
>> > topology node according to the requested data flow path, physical links and
>> > constraints. The topology could be complicated and multi-tiered and is SoC
>> > specific.
>> >
>> > Signed-off-by: Georgi Djakov <georgi.djakov at linaro.org>
>> > ---
>> >  Documentation/interconnect/interconnect.rst |  93 +++++++
>> >  drivers/Kconfig                             |   2 +
>> >  drivers/Makefile                            |   1 +
>> >  drivers/interconnect/Kconfig                |  10 +
>> >  drivers/interconnect/Makefile               |   1 +
>> >  drivers/interconnect/interconnect.c         | 382 ++++++++++++++++++++++++++++
>> >  include/linux/interconnect-consumer.h       |  73 ++++++
>> >  include/linux/interconnect-provider.h       | 119 +++++++++
>> >  8 files changed, 681 insertions(+)
>> >  create mode 100644 Documentation/interconnect/interconnect.rst
>> >  create mode 100644 drivers/interconnect/Kconfig
>> >  create mode 100644 drivers/interconnect/Makefile
>> >  create mode 100644 drivers/interconnect/interconnect.c
>> >  create mode 100644 include/linux/interconnect-consumer.h
>> >  create mode 100644 include/linux/interconnect-provider.h
>>
>> Any comments on this patch?
>>
>
> Sorry, I still haven't found the time to do a proper review of this yet.

Same.

>
>> I am planning to change the prefix that is used for naming for example
>> the functions from "interconnect_" to something shorter like icbus_.
>>
>
> This isn't implementing a bus; if you feel that just ic_ is too short I
> would suggest naming things inter_. (But keep the full name in the file
> names)

Not trying to bikeshed too much, but how about icc_ for "interconnect
controller"? No idea if that is a hash collision with other in-kernel
apis.

Just "ic_" looks to me like "integrated circuit".

Regards,
Mike

>
> Regards,
> Bjorn