[Letux-kernel] omapdrm: dsi panels

Sebastian Reichel sre at kernel.org
Thu Oct 10 11:54:11 CEST 2019


Hi,

On Thu, Oct 10, 2019 at 09:27:52AM +0200, H. Nikolaus Schaller wrote:
> > Am 10.10.2019 um 09:16 schrieb Laurent Pinchart <laurent.pinchart at ideasonboard.com>:
> > On Thu, Oct 10, 2019 at 08:41:43AM +0200, H. Nikolaus Schaller wrote:
> >> Am 10.10.2019 um 08:25 schrieb Laurent Pinchart:
> >>> On Thu, Oct 10, 2019 at 09:07:27AM +0300, Tomi Valkeinen wrote:
> >>>> On 10/10/2019 09:02, H. Nikolaus Schaller wrote:
> >>>>> Hi Tomi,
> >>>>> now as DPI panels have been moved to drm/panel are there plans to
> >>>>> support DSI panels sitting there as well?
> >>>>> 
> >>>>> I have looked to move our boe-w677l driver for the omap5/Pyra handheld
> >>>>> but it seems there are still some omapdrm dependencies.
> >>>> 
> >>>> No, OMAPDSS DSI support has not been moved to DRM model yet. I believe 
> >>>> Sebastian has been looking at that.
> >>> 
> >>> That's my understanding too, if I recall correctly Sebastian told me he
> >>> had a working implementation, but I'm not sure if it can be upstreamed
> >>> as-is. It would be amazing to get it in mainline, as we'll be able to
> >>> drop lots of code from omapdrm.
> >> 
> >> Ok, fine. I just wonder if a new driver for omapdrm/displays can then
> >> be accepted for upstreaming or how long we should have to wait.
> > 
> > I would prefer avoiding new drivers in omapdrm/displays. If you could
> > collaborate with Sebastian that would be best :-)
> 
> if you have a patch series to share, I could base my driver on it for
> testing.

This is my WIP development branch for converting the panel-dsi-cm
driver into a drm_panel. The driver still is in omapdrm/displays in
the branch, but it is free of any omapdrm specific things and can
trivially be moved to drm/panels.

https://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-n900.git/log/?h=omapdrm-5.4-dsi-dev

The branch is working on Droid 4, but panel unblanking after a blank
results in a kernel crash. Also system shutdown results in a kernel
crash. I plan to send out the series once I fixed these issues.

-- Sebastian
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