On Fri, Jul 04, 2014 at 03:14:02PM +0530, sonika.jindal@xxxxxxxxx wrote:
> +static int intel_primary_plane_set_property(struct drm_plane *plane,
> + struct drm_property *prop,
> + uint64_t val)
> +{
> + struct drm_device *dev = plane->dev;
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + struct intel_plane *intel_plane = to_intel_plane(plane);
> + struct intel_crtc *intel_crtc = to_intel_crtc(plane->crtc);
> + struct drm_crtc *crtc = &intel_crtc->base;
> + uint64_t old_val;
> +
> + if (prop == plane->rotation_property) {
> + /* exactly one rotation angle please */
> + if (hweight32(val & 0xf) != 1)
> + return -EINVAL;
> +
> + old_val = intel_plane->rotation;
> + intel_plane->rotation = val;
> +
> + if (intel_crtc->active && intel_crtc->primary_enabled) {
> + intel_crtc_wait_for_pending_flips(crtc);
> +
> + /* FBC does not work on some platforms for rotated planes */
> + if (INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev)) {
> + if (dev_priv->fbc.plane == intel_crtc->plane &&
> + intel_plane->rotation != BIT(DRM_ROTATE_0))
> + intel_disable_fbc(dev);
> + /* If rotation was set earlier and new rotation is 0, we might
> + * have disabled fbc earlier. So update it now */
> + else if (intel_plane->rotation == BIT(DRM_ROTATE_0) &&
> + old_val != BIT(DRM_ROTATE_0))
> + intel_update_fbc(dev);
I see a intel_update_fbc() called with the struct_mutext lock elsewhere,
don't we need it here as well?
mutex_lock(&dev->struct_mutex);
intel_update_fbc(dev);
mutex_unlock(&dev->struct_mutex);
--
Damien
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