From: Bjorn Andersson <bjorn.andersson@sonymobile.com>
To: Ohad Ben-Cohen <ohad@wizery.com>
Cc: Kumar Gala <galak@codeaurora.org>,
Andy Gross <agross@codeaurora.org>, Arnd Bergmann <arnd@arndb.de>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
"linux-arm-msm@vger.kernel.org" <linux-arm-msm@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Grant Likely <grant.likely@linaro.org>,
Ian Campbell <ijc+devicetree@hellion.org.uk>,
Lee Jones <lee.jones@linaro.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Mark Brown <broonie@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Pawel Moll <pawel.moll@arm.com>, Rob Herring <robh+dt@kernel.org>,
Samuel Ortiz <sameo@linux.intel.com>,
Kevin Hilman <khilman@deeprootsystems.com>
Subject: Re: [RFC 5/7] soc: qcom: Add Shared Memory Driver
Date: Thu, 30 Oct 2014 08:04:31 -0700 [thread overview]
Message-ID: <20141030150429.GX28611@sonymobile.com> (raw)
In-Reply-To: <CAK=WgbbP8UQAbFauE80PnF5bj3FTAkB2KfF0kFE8Pt23jQrDhA@mail.gmail.com>
On Thu 30 Oct 06:34 PDT 2014, Ohad Ben-Cohen wrote:
> Hi Bjorn,
>
> On Thu, Oct 30, 2014 at 2:38 AM, Bjorn Andersson
> <bjorn.andersson@sonymobile.com> wrote:
> > My concern is that merging SMD into rpmsg will still give us two different
> > solutions, except that they will be deeply tangled.
>
> I agree.
>
> It's very clear that SMD and rpmsg are different. But fundamentally,
> they do exactly the same: new messages are placed in a ring buffer and
> then an interrupt is triggered.
>
> If Qualcomm wanted to adopt rpmsg I'm confident there would have been
> no technical barriers to do so.
>
Their wish list seems long, but I think you're right :)
> But given that SMD is not going anywhere, I personally hope that you
> could at least avoid having two different implementations of it merged
> upstream.
>
Looking at the lack of functionality in mach-msm it seems like it's quite a lot
of work getting to a point where anyone could actually test smd on those devices.
If anyone have any input on how I get a piece of user space that will run with
mainline and communicate with the modem to test this I'm happily listening.
Regards,
Bjorn
WARNING: multiple messages have this Message-ID (diff)
From: bjorn.andersson@sonymobile.com (Bjorn Andersson)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC 5/7] soc: qcom: Add Shared Memory Driver
Date: Thu, 30 Oct 2014 08:04:31 -0700 [thread overview]
Message-ID: <20141030150429.GX28611@sonymobile.com> (raw)
In-Reply-To: <CAK=WgbbP8UQAbFauE80PnF5bj3FTAkB2KfF0kFE8Pt23jQrDhA@mail.gmail.com>
On Thu 30 Oct 06:34 PDT 2014, Ohad Ben-Cohen wrote:
> Hi Bjorn,
>
> On Thu, Oct 30, 2014 at 2:38 AM, Bjorn Andersson
> <bjorn.andersson@sonymobile.com> wrote:
> > My concern is that merging SMD into rpmsg will still give us two different
> > solutions, except that they will be deeply tangled.
>
> I agree.
>
> It's very clear that SMD and rpmsg are different. But fundamentally,
> they do exactly the same: new messages are placed in a ring buffer and
> then an interrupt is triggered.
>
> If Qualcomm wanted to adopt rpmsg I'm confident there would have been
> no technical barriers to do so.
>
Their wish list seems long, but I think you're right :)
> But given that SMD is not going anywhere, I personally hope that you
> could at least avoid having two different implementations of it merged
> upstream.
>
Looking at the lack of functionality in mach-msm it seems like it's quite a lot
of work getting to a point where anyone could actually test smd on those devices.
If anyone have any input on how I get a piece of user space that will run with
mainline and communicate with the modem to test this I'm happily listening.
Regards,
Bjorn
next prev parent reply other threads:[~2014-10-30 15:04 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-30 0:34 [RFC 0/7] Qualcomm SMEM, SMD, RPM and regulators Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` [RFC 1/7] soc: qcom: Add device tree binding for SMEM Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 13:52 ` Kumar Gala
2014-09-30 13:52 ` Kumar Gala
2014-09-30 19:03 ` Stephen Boyd
2014-09-30 19:03 ` Stephen Boyd
2014-09-30 20:00 ` Bjorn Andersson
2014-09-30 20:00 ` Bjorn Andersson
[not found] ` <1412037291-16880-2-git-send-email-bjorn.andersson-/MT0OVThwyLZJqsBc5GL+g@public.gmane.org>
2014-09-30 21:55 ` Suman Anna
2014-09-30 21:55 ` Suman Anna
2014-09-30 21:55 ` Suman Anna
2014-09-30 0:34 ` [RFC 2/7] soc: qcom: Add device tree binding for SMD Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` [RFC 3/7] mfd: devicetree: bindings: Add Qualcomm SMD based RPM DT binding Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 13:46 ` Kumar Gala
2014-09-30 13:46 ` Kumar Gala
2014-09-30 14:37 ` Bjorn Andersson
2014-09-30 14:37 ` Bjorn Andersson
2014-09-30 23:16 ` Jeffrey Hugo
2014-09-30 23:16 ` Jeffrey Hugo
2014-10-01 0:08 ` Bjorn Andersson
2014-10-01 0:08 ` Bjorn Andersson
2014-10-08 21:47 ` Jeffrey Hugo
2014-10-08 21:47 ` Jeffrey Hugo
2014-10-24 15:59 ` Bjorn Andersson
2014-10-24 15:59 ` Bjorn Andersson
2014-09-30 0:34 ` [RFC 4/7] soc: qcom: Add Shared Memory Manager driver Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 6:17 ` Kiran Padwal
2014-09-30 6:17 ` Kiran Padwal
2014-09-30 6:28 ` Kiran Padwal
2014-09-30 6:28 ` Kiran Padwal
2014-09-30 14:15 ` Bjorn Andersson
2014-09-30 14:15 ` Bjorn Andersson
2014-10-08 21:33 ` Jeffrey Hugo
2014-10-08 21:33 ` Jeffrey Hugo
2014-10-17 14:51 ` Bjorn Andersson
2014-10-17 14:51 ` Bjorn Andersson
2014-10-26 15:04 ` Andreas Färber
2014-10-26 15:04 ` Andreas Färber
2014-10-28 0:34 ` Bjorn Andersson
2014-10-28 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` [RFC 5/7] soc: qcom: Add Shared Memory Driver Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-10-02 22:38 ` Stephen Boyd
2014-10-02 22:38 ` Stephen Boyd
2014-10-04 0:02 ` Bjorn Andersson
2014-10-04 0:02 ` Bjorn Andersson
[not found] ` <1412037291-16880-6-git-send-email-bjorn.andersson-/MT0OVThwyLZJqsBc5GL+g@public.gmane.org>
2014-10-29 14:28 ` Ohad Ben-Cohen
2014-10-29 14:28 ` Ohad Ben-Cohen
2014-10-29 14:28 ` Ohad Ben-Cohen
2014-10-30 0:38 ` Bjorn Andersson
2014-10-30 0:38 ` Bjorn Andersson
2014-10-30 13:34 ` Ohad Ben-Cohen
2014-10-30 13:34 ` Ohad Ben-Cohen
2014-10-30 15:04 ` Bjorn Andersson [this message]
2014-10-30 15:04 ` Bjorn Andersson
2014-09-30 0:34 ` [RFC 6/7] mfd: qcom-smd-rpm: Driver for the Qualcomm RPM over SMD Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-10-08 8:40 ` Lee Jones
2014-10-08 8:40 ` Lee Jones
2014-10-17 13:55 ` Bjorn Andersson
2014-10-17 13:55 ` Bjorn Andersson
2014-10-20 7:22 ` Lee Jones
2014-10-20 7:22 ` Lee Jones
2014-10-24 16:45 ` Bjorn Andersson
2014-10-24 16:45 ` Bjorn Andersson
2014-09-30 0:34 ` [RFC 7/7] regulator: qcom-smd-rpm: Regulator driver for the Qualcomm RPM Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-09-30 0:34 ` Bjorn Andersson
2014-10-01 18:13 ` Mark Brown
2014-10-01 18:13 ` Mark Brown
2014-09-30 13:49 ` [RFC 0/7] Qualcomm SMEM, SMD, RPM and regulators Kumar Gala
2014-09-30 13:49 ` Kumar Gala
[not found] ` <E6EEBBAE-C710-4280-824D-CC5D54CB2551-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2014-09-30 14:51 ` Bjorn Andersson
2014-09-30 14:51 ` Bjorn Andersson
2014-09-30 14:51 ` Bjorn Andersson
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