On Fri, Mar 31, 2017 at 01:11:23PM +0300, Ville Syrjälä wrote:
> On Fri, Mar 31, 2017 at 10:51:52AM +0100, Russell King wrote:
> > hdlcd does not support rotation - check for it and reject plane updates
> > that try to rotate a plane.
> >
> > Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
> > ---
> > drivers/gpu/drm/arm/hdlcd_crtc.c | 4 ++++
> > 1 file changed, 4 insertions(+)
> >
> > diff --git a/drivers/gpu/drm/arm/hdlcd_crtc.c
> > b/drivers/gpu/drm/arm/hdlcd_crtc.c
> > index cf70184fd028..171acc842368 100644
> > --- a/drivers/gpu/drm/arm/hdlcd_crtc.c
> > +++ b/drivers/gpu/drm/arm/hdlcd_crtc.c
> > @@ -215,6 +215,10 @@ static int hdlcd_plane_atomic_check(struct drm_plane
> > *plane,
> > if (!crtc)
> > return 0;
> >
> > + /* We do not support rotation */
> > + if (state->rotation != DRM_ROTATE_0)
> > + return -EINVAL;
>
> This can't happen unless you attach a rotation property with a bogus
> set of supported rotations to the plane.
Which we don't. I did toy with the idea of adding it as one can hack support
for 0° and 180°
rotation by playing with the line pitch, I've even created a patch but in the
end I've
decided not to publish it. If there is anyone interested at some moment on
this, I can dig it out.
Best regards,
Liviu
>
> > +
> > crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
> > if (!crtc_state->enable)
> > return -EINVAL;
> > --
> > 2.7.4
>
> --
> Ville Syrjälä
> Intel OTC
--
====================
| I would like to |
| fix the world, |
| but they're not |
| giving me the |
\ source code! /
---------------
¯\_(ツ)_/¯
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