linux-kernel - Re: [PATCH v3 15/22] firmware: arm_scmi: abstract mailbox interface

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Message-ID: <CABb+yY0SmQaPgBxan44a_Sx2mFuuiPcMz41J1yjqfO5irPTYig@mail.gmail.com>
Date:   Fri, 6 Oct 2017 17:04:01 +0530
From:   Jassi Brar <jassisinghbrar@...il.com>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        ALKML <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Roy Franz <roy.franz@...ium.com>,
        Harb Abdulhamid <harba@...eaurora.org>,
        Nishanth Menon <nm@...com>, Loc Ho <lho@....com>,
        Alexey Klimov <alexey.klimov@....com>,
        Ryan Harkin <Ryan.Harkin@....com>
Subject: Re: [PATCH v3 15/22] firmware: arm_scmi: abstract mailbox interface

On Wed, Oct 4, 2017 at 5:02 PM, Sudeep Holla <sudeep.holla@....com> wrote:

> Also, I have added shim only for specific controllers that need them.
> E.g. ARM MHU as Jassi disagreed to add doorbell mechanism to that.
> mbox_if provides default implementation that just calls direct mailbox
> APIs.
>
Yeah you could hack away the MHU driver to make your life easy at the
cost of duplicated code and extra DT bindings, but for a moment think
what if your development platform wasn't MHU but, say, Rockchip
mailbox controller?