[PATCH v3 0/2] drm/modes: Apply video parameters with only reflect option

Stephan Gerhold stephan at gerhold.net
Wed Feb 12 15:29:48 UTC 2020


Hi Maxime,

On Fri, Jan 17, 2020 at 07:51:00PM +0100, Maxime Ripard wrote:
> On Fri, Jan 17, 2020 at 04:34:27PM +0100, Stephan Gerhold wrote:
> > At the moment, video mode parameters like video=540x960,reflect_x,
> > (without rotation set) are not taken into account when applying the
> > mode in drm_client_modeset.c.
> >
> > One of the reasons for this is that the calculation that
> > combines the panel_orientation with cmdline->rotation_reflection
> > does not handle the case when cmdline->rotation_reflection does
> > not have any rotation set.
> > (i.e. cmdline->rotation_reflection & DRM_MODE_ROTATE_MASK == 0)
> >
> > However, we really should not generate such a value in the first place.
> > Rotation values should have exactly one rotation angle set
> > (DRM_MODE_ROTATE_0 for "no rotation").
> >
> > This patch set changes the command line parser to make sure that we generate
> > only valid rotation values (defaulting to DRM_MODE_ROTATE_0).
> >
> > Finally it allows DRM_MODE_ROTATE_0 when applying the rotation from
> > the video mode parameters to make parameters without rotation work correctly.
> 
> For both,
> Acked-by: Maxime Ripard <mripard at kernel.org>

Can you apply these two patches for me?
This is my second contribution to the DRM subsystem, so I don't have
commit access to drm-misc yet.

Thanks,
Stephan


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