From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Vikas Sajjan <vikas.sajjan@linaro.org>
Cc: Jesse Barker <jesse.barker@linaro.org>,
Ragesh Radhakrishnan <Ragesh.R@linaro.org>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
Thomas Petazzoni <thomas.petazzoni@free-electrons.com>,
linux-fbdev@vger.kernel.org,
Philipp Zabel <p.zabel@pengutronix.de>,
Tom Gall <tom.gall@linaro.org>,
dri-devel@lists.freedesktop.org, Rob Clark <rob.clark@linaro.org>,
Kyungmin Park <kyungmin.park@samsung.com>,
Benjamin Gaignard <benjamin.gaignard@linaro.org>,
Bryan Wu <bryan.wu@canonical.com>,
Maxime Ripard <maxime.ripard@free-electrons.com>,
Sumit Semwal <sumit.semwal@linaro.org>,
Sebastien Guiriec <s-guiriec@ti.com>,
linux-media@vger.kernel.org, sunil joshi <joshi@samsung.com>
Subject: Re: [RFC v2 0/5] Common Display Framework
Date: Mon, 24 Dec 2012 12:59:31 +0000 [thread overview]
Message-ID: <21195616.A64r85Hc5F@avalon> (raw)
In-Reply-To: <CAD025yQoCiNaKvaCwvUWhk_jV70CPhV35UzV9MR6HtE+1baCxg@mail.gmail.com>
Hi Vikas,
On Tuesday 18 December 2012 08:31:30 Vikas Sajjan wrote:
> On 17 December 2012 20:55, Laurent Pinchart wrote:
> > Hi Vikas,
> >
> > Sorry for the late reply. I now have more time to work on CDF, so delays
> > should be much shorter.
> >
> > On Thursday 06 December 2012 10:51:15 Vikas Sajjan wrote:
> > > Hi Laurent,
> > >
> > > I was thinking of porting CDF to samsung EXYNOS 5250 platform, what I
> > > found is that, the exynos display controller is MIPI DSI based
> > > controller.
> > >
> > > But if I look at CDF patches, it has only support for MIPI DBI based
> > > Display controller.
> > >
> > > So my question is, do we have any generic framework for MIPI DSI based
> > > display controller? basically I wanted to know, how to go about porting
> > > CDF for such kind of display controller.
> >
> > MIPI DSI support is not available yet. The only reason for that is that I
> > don't have any MIPI DSI hardware to write and test the code with :-)
> >
> > The common display framework should definitely support MIPI DSI. I think
> > the existing MIPI DBI code could be used as a base, so the implementation
> > shouldn't be too high.
> >
> > Yeah, i was also thinking in similar lines, below is my though for MIPI
> > DSI support in CDF.
>
> o MIPI DSI support as part of CDF framework will expose
> § mipi_dsi_register_device(mpi_device) (will be called mach-xxx-dt.c
> file)
> § mipi_dsi_register_driver(mipi_driver, bus ops) (will be called from
> platform specific init driver call )
> · bus ops will be
> o read data
> o write data
> o write command
> § MIPI DSI will be registered as bus_register()
>
> When MIPI DSI probe is called, it (e.g., Exynos or OMAP MIPI DSI) will
> initialize the MIPI DSI HW IP.
>
> This probe will also parse the DT file for MIPI DSI based panel, add
> the panel device (device_add() ) to kernel and register the display
> entity with its control and video ops with CDF.
After discussing the DBI/DSI busses with Tomi Valkeinen we concluded that
creating a real bus for DBI and DSI, although possible, wasn't required. DSI
operations should thus be provided through display entity video source
operations. You can find a proposed implementation in Tomi's patch set.
> > I can give this a try. Does the existing Exynos 5250 driver support MIPI
> > DSI ? Is the device documentation publicly available ? Can you point me to
> > a MIPI DSI panel with public documentation (preferably with an existing
> > mainline driver if possible) ?
>
> yeah, existing Exynos 5250 driver support MIPI DSI ass well as eDP.
>
> i think device documentation is NOT available publicly.
--
Regards,
Laurent Pinchart
prev parent reply other threads:[~2012-12-24 12:59 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-22 21:45 [RFC v2 0/5] Common Display Framework Laurent Pinchart
2012-11-22 21:45 ` [RFC v2 1/5] video: Add generic display entity core Laurent Pinchart
2012-11-27 13:07 ` Tomi Valkeinen
2012-11-22 21:45 ` [RFC v2 2/5] video: panel: Add DPI panel support Laurent Pinchart
2012-11-27 13:02 ` Tomi Valkeinen
2012-11-30 9:26 ` Philipp Zabel
2012-11-22 21:45 ` [RFC v2 3/5] video: display: Add MIPI DBI bus support Laurent Pinchart
2012-11-30 12:02 ` Tomi Valkeinen
2012-11-22 21:45 ` [RFC v2 4/5] video: panel: Add R61505 panel support Laurent Pinchart
2012-11-22 21:45 ` [RFC v2 5/5] video: panel: Add R61517 " Laurent Pinchart
2012-11-23 14:51 ` [RFC v2 0/5] Common Display Framework Tomi Valkeinen
2012-12-17 14:36 ` Laurent Pinchart
2012-12-17 15:29 ` Tomi Valkeinen
2012-12-17 23:18 ` Laurent Pinchart
2012-12-17 16:53 ` Jani Nikula
2012-12-17 22:19 ` Laurent Pinchart
2012-12-19 14:57 ` Jani Nikula
2012-12-19 15:07 ` Tomi Valkeinen
2012-12-24 17:31 ` Laurent Pinchart
2012-12-19 15:26 ` Rob Clark
2012-12-19 15:37 ` Tomi Valkeinen
2012-12-19 16:05 ` Rob Clark
2012-12-24 17:40 ` Laurent Pinchart
2012-12-24 17:35 ` Laurent Pinchart
2012-12-27 16:10 ` Rob Clark
2012-12-24 17:27 ` Laurent Pinchart
2012-12-27 16:04 ` Rob Clark
2012-12-27 19:19 ` Sascha Hauer
2012-11-23 19:56 ` Thierry Reding
2012-11-24 7:15 ` Tomi Valkeinen
2012-11-26 14:47 ` Alan Cox
2012-12-17 15:15 ` Laurent Pinchart
2012-11-26 7:53 ` Philipp Zabel
2012-12-17 14:58 ` Laurent Pinchart
2012-11-23 21:41 ` Sascha Hauer
2012-12-17 15:02 ` Laurent Pinchart
2012-12-18 5:04 ` Dave Airlie
2012-12-18 6:21 ` Rob Clark
2012-12-18 8:30 ` Daniel Vetter
2012-12-24 13:39 ` Laurent Pinchart
[not found] ` <CAAQKjZMt+13oooEw39mOM1rF2=ss4ih1s7iVS362di-50h4+Hg@mail.gmail.com>
2012-12-19 20:13 ` Stéphane Marchesin
2012-12-24 14:08 ` Laurent Pinchart
2012-12-18 10:59 ` Sylwester Nawrocki
2012-12-24 17:19 ` Laurent Pinchart
2012-12-19 20:05 ` Stéphane Marchesin
2012-12-24 13:37 ` Laurent Pinchart
2012-12-27 15:54 ` Rob Clark
2012-12-27 19:18 ` Sascha Hauer
2012-12-27 19:57 ` Rob Clark
2012-12-28 0:04 ` Sascha Hauer
2013-01-08 8:33 ` Laurent Pinchart
2013-01-08 8:25 ` Laurent Pinchart
2013-01-08 16:13 ` Rob Clark
2013-01-09 8:35 ` Rahul Sharma
2013-02-01 23:42 ` Laurent Pinchart
2013-02-02 10:08 ` Rob Clark
2012-12-18 10:39 ` Marcus Lorentzon
2012-12-24 17:09 ` Laurent Pinchart
2012-12-27 15:57 ` Rob Clark
2013-01-06 17:46 ` Daniel Vetter
2013-01-08 8:41 ` Laurent Pinchart
2012-12-24 13:24 ` Laurent Pinchart
[not found] ` <CAD025yS5rGMbiRBdDxv=YLP6_fsQndAkr+3t29_mNhcvow_SwA@mail.gmail.com>
[not found] ` <3133576.BkqAl7V01U@avalon>
[not found] ` <CAD025yQoCiNaKvaCwvUWhk_jV70CPhV35UzV9MR6HtE+1baCxg@mail.gmail.com>
2012-12-18 6:25 ` Vikas Sajjan
2012-12-21 10:00 ` Tomasz Figa
2012-12-24 14:12 ` Laurent Pinchart
2012-12-27 14:43 ` Tomasz Figa
2012-12-28 3:38 ` Vikas Sajjan
2013-01-08 8:18 ` Laurent Pinchart
2013-01-08 10:12 ` Marcus Lorentzon
2013-01-08 16:36 ` Tomasz Figa
2013-01-08 17:08 ` Marcus Lorentzon
2013-02-01 23:35 ` Laurent Pinchart
2013-02-04 10:05 ` Marcus Lorentzon
2013-02-06 9:52 ` Archit Taneja
2013-02-08 10:51 ` Tomi Valkeinen
2013-02-08 12:43 ` Marcus Lorentzon
2013-02-01 23:37 ` Laurent Pinchart
2012-12-24 12:59 ` Laurent Pinchart [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=21195616.A64r85Hc5F@avalon \
--to=laurent.pinchart@ideasonboard.com \
--cc=Ragesh.R@linaro.org \
--cc=benjamin.gaignard@linaro.org \
--cc=bryan.wu@canonical.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=jesse.barker@linaro.org \
--cc=joshi@samsung.com \
--cc=kyungmin.park@samsung.com \
--cc=linux-fbdev@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=maxime.ripard@free-electrons.com \
--cc=p.zabel@pengutronix.de \
--cc=rob.clark@linaro.org \
--cc=s-guiriec@ti.com \
--cc=sumit.semwal@linaro.org \
--cc=thomas.petazzoni@free-electrons.com \
--cc=tom.gall@linaro.org \
--cc=tomi.valkeinen@ti.com \
--cc=vikas.sajjan@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).