On Mon, Oct 14, 2013 at 04:59:13PM +0300, Imre Deak wrote:
> On Mon, 2013-09-30 at 17:44 +0300, ville.syrjala@xxxxxxxxxxxxxxx wrote:
> > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> >
> > Sprite planes support 180 degree rotation. The lower layers are now in
> > place, so hook in the standard rotation property to expose the feature
> > to the users.
> >
> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> > ---
> > drivers/gpu/drm/i915/i915_drv.h | 1 +
> > drivers/gpu/drm/i915/intel_sprite.c | 42 ++++++++++++++++++++++++++++++++++++-
> > 2 files changed, 42 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> > index 08e96a8..48d4d5f 100644
> > --- a/drivers/gpu/drm/i915/i915_drv.h
> > +++ b/drivers/gpu/drm/i915/i915_drv.h
> > @@ -1356,6 +1356,7 @@ typedef struct drm_i915_private {
> >
> > struct drm_property *broadcast_rgb_property;
> > struct drm_property *force_audio_property;
> > + struct drm_property *rotation_property;
> >
> > bool hw_contexts_disabled;
> > uint32_t hw_context_size;
> > diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
> > index 028a979..49f8238 100644
> > --- a/drivers/gpu/drm/i915/intel_sprite.c
> > +++ b/drivers/gpu/drm/i915/intel_sprite.c
> > @@ -1033,6 +1033,30 @@ out_unlock:
> > return ret;
> > }
> >
> > +static int intel_plane_set_property(struct drm_plane *plane,
> > + struct drm_property *prop,
> > + uint64_t val)
> > +{
> > + struct drm_i915_private *dev_priv = plane->dev->dev_private;
> > + struct intel_plane *intel_plane = to_intel_plane(plane);
> > + uint64_t old_val;
> > + int ret = -ENOENT;
> > +
> > + if (prop == dev_priv->rotation_property) {
> > + /* exactly one rotation angle please */
> > + if (hweight32(val & 0xf) != 1)
> > + return -EINVAL;
> > +
> > + old_val = intel_plane->rotation;
> > + intel_plane->rotation = val;
> > + ret = intel_plane_restore(plane);
> > + if (ret)
> > + intel_plane->rotation = old_val;
> > + }
> > +
> > + return ret;
> > +}
> > +
> > int intel_plane_restore(struct drm_plane *plane)
> > {
> > struct intel_plane *intel_plane = to_intel_plane(plane);
> > @@ -1059,6 +1083,7 @@ static const struct drm_plane_funcs intel_plane_funcs = {
> > .update_plane = intel_update_plane,
> > .disable_plane = intel_disable_plane,
> > .destroy = intel_destroy_plane,
> > + .set_property = intel_plane_set_property,
> > };
> >
> > static uint32_t ilk_plane_formats[] = {
> > @@ -1095,6 +1120,7 @@ static uint32_t vlv_plane_formats[] = {
> > int
> > intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
> > {
> > + struct drm_i915_private *dev_priv = dev->dev_private;
> > struct intel_plane *intel_plane;
> > unsigned long possible_crtcs;
> > const uint32_t *plane_formats;
> > @@ -1168,8 +1194,22 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
> > &intel_plane_funcs,
> > plane_formats, num_plane_formats,
> > false);
> > - if (ret)
> > + if (ret) {
> > kfree(intel_plane);
> > + goto out;
> > + }
> > +
> > + if (!dev_priv->rotation_property)
> > + dev_priv->rotation_property =
> > + drm_mode_create_rotation_property(dev,
> > + BIT(DRM_ROTATE_0) |
> > + BIT(DRM_ROTATE_180));
> > +
> > + if (dev_priv->rotation_property)
> > + drm_object_attach_property(&intel_plane->base.base,
> > + dev_priv->rotation_property,
> > + intel_plane->rotation);
>
> drm_mode_create_rotation_property() can fail silently, I think we should
> handle it.
I figured I'd just move it to intel_modeset_init() but turns out we
don't really handle errors there either. Frankly this looks like
another rathole. Seeing as we already ignore property creation errors
in other places (in a way that could oops even), I'm just going to
run away before the urge to fix it all takes over.
--
Ville Syrjälä
Intel OTC
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