Re: [PATCH v4 3/5] soc: qcom: Introduce APCS IPC driver

From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Jassi Brar <jassisinghbrar@gmail.com>
Cc: Jeffrey Hugo <jhugo@codeaurora.org>,
	Andy Gross <andy.gross@linaro.org>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Ohad Ben-Cohen <ohad@wizery.com>,
	linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org,
	Devicetree List <devicetree@vger.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	linux-remoteproc@vger.kernel.org
Subject: Re: [PATCH v4 3/5] soc: qcom: Introduce APCS IPC driver
Date: Fri, 12 May 2017 15:48:40 -0700	[thread overview]
Message-ID: <20170512224840.GW15143@minitux> (raw)
In-Reply-To: <CABb+yY2Upw_RALXjL_=yAUCOMzpb+PV6v_OjiznKBUJnFE2UVQ@mail.gmail.com>

On Wed 10 May 19:07 PDT 2017, Jassi Brar wrote:

> On Thu, May 11, 2017 at 12:30 AM, Bjorn Andersson
> <bjorn.andersson@linaro.org> wrote:
> > On Tue 09 May 19:33 PDT 2017, Jassi Brar wrote:
[..]
> > So please let me know what you think about [1], if you don't like it
> > I'll fix the things pointed to by Stephen and we'll have to live with
> > the two calls.
> >
> My last reply was about [1]. Other platforms call
> mbox_send_data()+mbox_client_txdone() see
> drivers/firmware/tegra/bpmp.c, but you want to introduce another API
> in the innards of the framework.

Okay, lets go with that then. I will incorporate the changes requested
by Stephen and post a final version and then add the
mbox_client_txdone() in the clients.

> If we must do it, it should be done
> above the framework by introducing
> 
> void mbox_send_message_and_tick(struct mbox_chan *chan, void *mssg)
>            OR
> void mbox_ring_doorbell(struct mbox_chan *chan, void *mssg)
> {
>    (void)mbox_send_message(chan, mssg);
>    mbox_client_txdone(chan, 0);
> }

This sounds reasonable, but I would prefer that we get the two drivers
merged - so I suggest that we deal with that later, when we see if its
worth the effort.

Regards,
Bjorn