/**
* intel_fbc_init_pipe_state - initialize FBC's CRTC visibility tracking
* @dev_priv: i915 device instance
*
* The FBC code needs to track CRTC visibility since the older platforms can't
* have FBC enabled while multiple pipes are used. This function does the
* initial setup at driver load to make sure FBC is matching the real hardware.
*/
void intel_fbc_init_pipe_state(struct drm_i915_private *dev_priv)
{
struct intel_crtc *crtc;
/* Don't even bother tracking anything if we don't need. */
if (!no_fbc_on_multiple_pipes(dev_priv))
return;
for_each_intel_crtc(dev_priv->dev, crtc)
if (intel_crtc_active(&crtc->base) &&
to_intel_plane_state(crtc->base.primary->state)->visible)
dev_priv->fbc.visible_pipes_mask |= (1 << crtc->pipe);
}
static struct drm_crtc *intel_fbc_find_crtc(struct drm_i915_private *dev_priv)
{
struct drm_crtc *crtc = NULL, *tmp_crtc;
enum pipe pipe;
bool pipe_a_only = false;
if (IS_HASWELL(dev_priv) || INTEL_INFO(dev_priv)->gen >= 8)
pipe_a_only = true;
for_each_pipe(dev_priv, pipe) {
tmp_crtc = dev_priv->pipe_to_crtc_mapping[pipe];
if (intel_crtc_active(tmp_crtc) &&
to_intel_plane_state(tmp_crtc->primary->state)->visible)
crtc = tmp_crtc;
if (pipe_a_only)
break;
}
