Re: [PATCH 00/23] Nokia N950 display support

From	Sebastian Reichel <sre@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 00/23] Nokia N950 display support
Date	2016-03-09 15:40 +0100
Message-ID	<raNrl-Hp-23@gated-at.bofh.it> (permalink)
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Hi,

On Wed, Mar 09, 2016 at 09:10:28AM +0200, Tomi Valkeinen wrote:
> Hmm there's only so called DMA rotation, which shouldn't work. It's only
> meant for really small displays, when the framebuffer is in SRAM. So I'm
> a bit baffled as to what rotation you are using and why is it working =).
>
> There is also VRFB rotation on omap3, but that's not supported by omapdrm.

yeah, I was also wondering why it's working. I just did "xrandr -o
left" and my display was rotated unexpectedly :) I have not yet
checked what happens in that case.

> > But yeah, we probably want to change the default
> > rotation. Especially since touchscreen should have
> > the same default rotation as the screen. (TS is
> > horizontal, correct orientation for keyboard usage)
> 
> I don't know much about touchscreens, but I'm guessing that it's easier
> to rotate the coordinates from touch than achieve good panel rotation on
> N950.

Yes, rotating the TS coordinates is simpler than panel rotation,
since much less information must be rotated. I just mentioned
TS, since the _default_ orientation should be the same for both.
In the end both must be rotated at the same time (and thus both
must support rotation).

-- Sebastian

Thread

[PATCH 00/23] Nokia N950 display support Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 21/23] drm: omapdrm: panel-dsi-cm: block disable until update completed Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 14/23] drm: omapdrm: crtc: save framedone callback from dss Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 10/23] drm: omapdrm: crtc: detect manually updated displays Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 19/23] drm: omapdrm: panel-dsi-cm: improve DT support Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 01/23] ARM: dts: n9/n950: regulator configuration Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 07/23] drm: omapdrm: crtc: switch pending variable to atomic bitset Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 15/23] drm: omapdrm: crtc: add support for manual updated displays Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 11/23] include: video: omapdss: provide fifo threshold methods Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 08/23] drm: omapdrm: crtc: add enabled bit to state Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 16/23] drm: omapdrm: update manual displays on dirty ioctl Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  [PATCH 18/23] drm: omapdrm: panel-dsi-cm: use threaded irq handler Sebastian Reichel <sre@kernel.org> - 2016-03-08 18:00 +0100
  Re: [PATCH 00/23] Nokia N950 display support Aaro Koskinen <aaro.koskinen@iki.fi> - 2016-03-08 19:40 +0100
    Re: [PATCH 00/23] Nokia N950 display support Sebastian Reichel <sre@kernel.org> - 2016-03-08 21:50 +0100
      Re: [PATCH 00/23] Nokia N950 display support Tomi Valkeinen <tomi.valkeinen@ti.com> - 2016-03-09 08:20 +0100
        Re: [PATCH 00/23] Nokia N950 display support Sebastian Reichel <sre@kernel.org> - 2016-03-09 15:40 +0100
      Re: [PATCH 00/23] Nokia N950 display support Aaro Koskinen <aaro.koskinen@iki.fi> - 2016-03-09 22:10 +0100
  Re: [PATCH 00/23] Nokia N950 display support Tomi Valkeinen <tomi.valkeinen@ti.com> - 2016-03-09 17:30 +0100
    Re: [PATCH 00/23] Nokia N950 display support Emil Velikov <emil.l.velikov@gmail.com> - 2016-03-09 18:00 +0100
  Re: [PATCH 00/23] Nokia N950 display support Emil Velikov <emil.l.velikov@gmail.com> - 2016-03-09 17:30 +0100
    Re: [PATCH 00/23] Nokia N950 display support Sebastian Reichel <sre@kernel.org> - 2016-03-09 18:10 +0100

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