Re: [PATCH 4/5] drm: Check crtc viewport correctly with rotated primary plane on atomic drivers

["Ville Syrjälä" <ville.syrjala@linux.intel.com>]

On Thu, Oct 15, 2015 at 05:32:12PM -0700, Matt Roper wrote:
> On Thu, Oct 15, 2015 at 08:40:01PM +0300, ville.syrjala@linux.intel.com wrote:
> > From: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > 
> > On atomic drivers we can dig out the primary plane rotation from the
> > plane state instead of looking at the legacy crtc->invert_dimensions
> > flag. The flag is not set by anyone except omapdrm, and it would be
> > racy to set it the same way in the atomic helpers.
> 
> Can't we just remove the invert_dimensions field completely now?  It's a
> legacy-only field, but no legacy drivers actually set it, so it winds up
> being completely unused.

omap sets it.

> 
> 
> Matt
> 
> > 
> > Cc: Matt Roper <matthew.d.roper@intel.com>
> > Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
> > Cc: Daniel Vetter <daniel@ffwll.ch>
> > Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> > ---
> >  drivers/gpu/drm/drm_crtc.c | 12 +++++++++++-
> >  1 file changed, 11 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
> > index 227613a..ffaa3f5 100644
> > --- a/drivers/gpu/drm/drm_crtc.c
> > +++ b/drivers/gpu/drm/drm_crtc.c
> > @@ -2545,6 +2545,16 @@ void drm_crtc_get_hv_timing(const struct drm_display_mode *mode,
> >  }
> >  EXPORT_SYMBOL(drm_crtc_get_hv_timing);
> >  
> > +static bool invert_dimensions(const struct drm_crtc *crtc)
> > +{
> > +	if (crtc->state) {
> > +		return crtc->primary->state->rotation & (BIT(DRM_ROTATE_90) |
> > +							 BIT(DRM_ROTATE_270));
> > +	} else {
> > +		return crtc->invert_dimensions;
> > +	}
> > +}
> > +
> >  /**
> >   * drm_crtc_check_viewport - Checks that a framebuffer is big enough for the
> >   *     CRTC viewport
> > @@ -2564,7 +2574,7 @@ int drm_crtc_check_viewport(const struct drm_crtc *crtc,
> >  
> >  	drm_crtc_get_hv_timing(mode, &hdisplay, &vdisplay);
> >  
> > -	if (crtc->invert_dimensions)
> > +	if (invert_dimensions(crtc))
> >  		swap(hdisplay, vdisplay);
> >  
> >  	return check_src_coords(x << 16, y << 16,
> > -- 
> > 2.4.9
> > 
> 
> -- 
> Matt Roper
> Graphics Software Engineer
> IoTG Platform Enabling & Development
> Intel Corporation
> (916) 356-2795

-- 
Ville Syrjälä
Intel OTC
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