drm/i915: Switch off FBC when disabling the primary plane when obscured

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / i915 / intel_sprite.c

diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 2a20fb0781d7591018fdb7202d96ee7685e9cbba..9d7777bc15459abff49fc037c70f254db63a995b 100644 (file)
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -326,6 +326,12 @@ intel_enable_primary(struct drm_crtc *crtc)
        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
        int reg = DSPCNTR(intel_crtc->plane);
 
+       if (!intel_crtc->primary_disabled)
+               return;
+
+       intel_crtc->primary_disabled = false;
+       intel_update_fbc(dev);
+
        I915_WRITE(reg, I915_READ(reg) | DISPLAY_PLANE_ENABLE);
 }
 
@@ -337,7 +343,13 @@ intel_disable_primary(struct drm_crtc *crtc)
        struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
        int reg = DSPCNTR(intel_crtc->plane);
 
+       if (intel_crtc->primary_disabled)
+               return;
+
        I915_WRITE(reg, I915_READ(reg) & ~DISPLAY_PLANE_ENABLE);
+
+       intel_crtc->primary_disabled = true;
+       intel_update_fbc(dev);
 }
 
 static int
@@ -485,18 +497,14 @@ intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
         * Be sure to re-enable the primary before the sprite is no longer
         * covering it fully.
         */
-       if (!disable_primary && intel_plane->primary_disabled) {
+       if (!disable_primary)
                intel_enable_primary(crtc);
-               intel_plane->primary_disabled = false;
-       }
 
        intel_plane->update_plane(plane, fb, obj, crtc_x, crtc_y,
                                  crtc_w, crtc_h, x, y, src_w, src_h);
 
-       if (disable_primary) {
+       if (disable_primary)
                intel_disable_primary(crtc);
-               intel_plane->primary_disabled = true;
-       }
 
        /* Unpin old obj after new one is active to avoid ugliness */
        if (old_obj) {
@@ -527,11 +535,8 @@ intel_disable_plane(struct drm_plane *plane)
        struct intel_plane *intel_plane = to_intel_plane(plane);
        int ret = 0;
 
-       if (intel_plane->primary_disabled) {
+       if (plane->crtc)
                intel_enable_primary(plane->crtc);
-               intel_plane->primary_disabled = false;
-       }
-
        intel_plane->disable_plane(plane);
 
        if (!intel_plane->obj)