drm/i915: Cache LVDS EDID
[pandora-kernel.git] / drivers / gpu / drm / i915 / intel_overlay.c
index 1d306a4..c4699c9 100644 (file)
@@ -170,57 +170,143 @@ struct overlay_registers {
     u16 RESERVEDG[0x100 / 2 - N_HORIZ_UV_TAPS * N_PHASES];
 };
 
-/* overlay flip addr flag */
-#define OFC_UPDATE             0x1
-
-#define OVERLAY_NONPHYSICAL(dev) (IS_G33(dev) || IS_I965G(dev))
-#define OVERLAY_EXISTS(dev) (!IS_G4X(dev) && !IS_IRONLAKE(dev) && !IS_GEN6(dev))
-
+struct intel_overlay {
+       struct drm_device *dev;
+       struct intel_crtc *crtc;
+       struct drm_i915_gem_object *vid_bo;
+       struct drm_i915_gem_object *old_vid_bo;
+       int active;
+       int pfit_active;
+       u32 pfit_vscale_ratio; /* shifted-point number, (1<<12) == 1.0 */
+       u32 color_key;
+       u32 brightness, contrast, saturation;
+       u32 old_xscale, old_yscale;
+       /* register access */
+       u32 flip_addr;
+       struct drm_i915_gem_object *reg_bo;
+       /* flip handling */
+       uint32_t last_flip_req;
+       void (*flip_tail)(struct intel_overlay *);
+};
 
-static struct overlay_registers *intel_overlay_map_regs_atomic(struct intel_overlay *overlay)
+static struct overlay_registers *
+intel_overlay_map_regs(struct intel_overlay *overlay)
 {
         drm_i915_private_t *dev_priv = overlay->dev->dev_private;
        struct overlay_registers *regs;
 
-       /* no recursive mappings */
-       BUG_ON(overlay->virt_addr);
+       if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
+               regs = overlay->reg_bo->phys_obj->handle->vaddr;
+       else
+               regs = io_mapping_map_wc(dev_priv->mm.gtt_mapping,
+                                        overlay->reg_bo->gtt_offset);
 
-       if (OVERLAY_NONPHYSICAL(overlay->dev)) {
-               regs = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
-                                               overlay->reg_bo->gtt_offset,
-                                               KM_USER0);
+       return regs;
+}
 
-               if (!regs) {
-                       DRM_ERROR("failed to map overlay regs in GTT\n");
-                       return NULL;
-               }
-       } else
-               regs = overlay->reg_bo->phys_obj->handle->vaddr;
+static void intel_overlay_unmap_regs(struct intel_overlay *overlay,
+                                    struct overlay_registers *regs)
+{
+       if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
+               io_mapping_unmap(regs);
+}
 
-       return overlay->virt_addr = regs;
+static int intel_overlay_do_wait_request(struct intel_overlay *overlay,
+                                        struct drm_i915_gem_request *request,
+                                        bool interruptible,
+                                        void (*tail)(struct intel_overlay *))
+{
+       struct drm_device *dev = overlay->dev;
+       drm_i915_private_t *dev_priv = dev->dev_private;
+       int ret;
+
+       BUG_ON(overlay->last_flip_req);
+       overlay->last_flip_req =
+               i915_add_request(dev, NULL, request, &dev_priv->render_ring);
+       if (overlay->last_flip_req == 0)
+               return -ENOMEM;
+
+       overlay->flip_tail = tail;
+       ret = i915_do_wait_request(dev,
+                                  overlay->last_flip_req, true,
+                                  &dev_priv->render_ring);
+       if (ret)
+               return ret;
+
+       overlay->last_flip_req = 0;
+       return 0;
 }
 
-static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay)
+/* Workaround for i830 bug where pipe a must be enable to change control regs */
+static int
+i830_activate_pipe_a(struct drm_device *dev)
 {
-       if (OVERLAY_NONPHYSICAL(overlay->dev))
-               io_mapping_unmap_atomic(overlay->virt_addr, KM_USER0);
+       drm_i915_private_t *dev_priv = dev->dev_private;
+       struct intel_crtc *crtc;
+       struct drm_crtc_helper_funcs *crtc_funcs;
+       struct drm_display_mode vesa_640x480 = {
+               DRM_MODE("640x480", DRM_MODE_TYPE_DRIVER, 25175, 640, 656,
+                        752, 800, 0, 480, 489, 492, 525, 0,
+                        DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC)
+       }, *mode;
+
+       crtc = to_intel_crtc(dev_priv->pipe_to_crtc_mapping[0]);
+       if (crtc->dpms_mode == DRM_MODE_DPMS_ON)
+               return 0;
 
-       overlay->virt_addr = NULL;
+       /* most i8xx have pipe a forced on, so don't trust dpms mode */
+       if (I915_READ(PIPEACONF) & PIPECONF_ENABLE)
+               return 0;
 
-       return;
+       crtc_funcs = crtc->base.helper_private;
+       if (crtc_funcs->dpms == NULL)
+               return 0;
+
+       DRM_DEBUG_DRIVER("Enabling pipe A in order to enable overlay\n");
+
+       mode = drm_mode_duplicate(dev, &vesa_640x480);
+       drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
+       if(!drm_crtc_helper_set_mode(&crtc->base, mode,
+                                      crtc->base.x, crtc->base.y,
+                                      crtc->base.fb))
+               return 0;
+
+       crtc_funcs->dpms(&crtc->base, DRM_MODE_DPMS_ON);
+       return 1;
+}
+
+static void
+i830_deactivate_pipe_a(struct drm_device *dev)
+{
+       drm_i915_private_t *dev_priv = dev->dev_private;
+       struct drm_crtc *crtc = dev_priv->pipe_to_crtc_mapping[0];
+       struct drm_crtc_helper_funcs *crtc_funcs = crtc->helper_private;
+
+       crtc_funcs->dpms(crtc, DRM_MODE_DPMS_OFF);
 }
 
 /* overlay needs to be disable in OCMD reg */
 static int intel_overlay_on(struct intel_overlay *overlay)
 {
        struct drm_device *dev = overlay->dev;
+       struct drm_i915_gem_request *request;
+       int pipe_a_quirk = 0;
        int ret;
-       drm_i915_private_t *dev_priv = dev->dev_private;
 
        BUG_ON(overlay->active);
-
        overlay->active = 1;
-       overlay->hw_wedged = NEEDS_WAIT_FOR_FLIP;
+
+       if (IS_I830(dev)) {
+               pipe_a_quirk = i830_activate_pipe_a(dev);
+               if (pipe_a_quirk < 0)
+                       return pipe_a_quirk;
+       }
+
+       request = kzalloc(sizeof(*request), GFP_KERNEL);
+       if (request == NULL) {
+               ret = -ENOMEM;
+               goto out;
+       }
 
        BEGIN_LP_RING(4);
        OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_ON);
@@ -229,32 +315,30 @@ static int intel_overlay_on(struct intel_overlay *overlay)
        OUT_RING(MI_NOOP);
        ADVANCE_LP_RING();
 
-       overlay->last_flip_req =
-               i915_add_request(dev, NULL, 0, &dev_priv->render_ring);
-       if (overlay->last_flip_req == 0)
-               return -ENOMEM;
-
-       ret = i915_do_wait_request(dev,
-                       overlay->last_flip_req, 1, &dev_priv->render_ring);
-       if (ret != 0)
-               return ret;
+       ret = intel_overlay_do_wait_request(overlay, request, true, NULL);
+out:
+       if (pipe_a_quirk)
+               i830_deactivate_pipe_a(dev);
 
-       overlay->hw_wedged = 0;
-       overlay->last_flip_req = 0;
-       return 0;
+       return ret;
 }
 
 /* overlay needs to be enabled in OCMD reg */
-static void intel_overlay_continue(struct intel_overlay *overlay,
-                           bool load_polyphase_filter)
+static int intel_overlay_continue(struct intel_overlay *overlay,
+                                 bool load_polyphase_filter)
 {
        struct drm_device *dev = overlay->dev;
         drm_i915_private_t *dev_priv = dev->dev_private;
+       struct drm_i915_gem_request *request;
        u32 flip_addr = overlay->flip_addr;
        u32 tmp;
 
        BUG_ON(!overlay->active);
 
+       request = kzalloc(sizeof(*request), GFP_KERNEL);
+       if (request == NULL)
+               return -ENOMEM;
+
        if (load_polyphase_filter)
                flip_addr |= OFC_UPDATE;
 
@@ -269,220 +353,132 @@ static void intel_overlay_continue(struct intel_overlay *overlay,
         ADVANCE_LP_RING();
 
        overlay->last_flip_req =
-               i915_add_request(dev, NULL, 0, &dev_priv->render_ring);
+               i915_add_request(dev, NULL, request, &dev_priv->render_ring);
+       return 0;
 }
 
-static int intel_overlay_wait_flip(struct intel_overlay *overlay)
+static void intel_overlay_release_old_vid_tail(struct intel_overlay *overlay)
 {
-       struct drm_device *dev = overlay->dev;
-        drm_i915_private_t *dev_priv = dev->dev_private;
-       int ret;
-       u32 tmp;
-
-       if (overlay->last_flip_req != 0) {
-               ret = i915_do_wait_request(dev, overlay->last_flip_req,
-                               1, &dev_priv->render_ring);
-               if (ret == 0) {
-                       overlay->last_flip_req = 0;
-
-                       tmp = I915_READ(ISR);
+       struct drm_gem_object *obj = &overlay->old_vid_bo->base;
 
-                       if (!(tmp & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT))
-                               return 0;
-               }
-       }
+       i915_gem_object_unpin(obj);
+       drm_gem_object_unreference(obj);
 
-       /* synchronous slowpath */
-       overlay->hw_wedged = RELEASE_OLD_VID;
+       overlay->old_vid_bo = NULL;
+}
 
-       BEGIN_LP_RING(2);
-        OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
-        OUT_RING(MI_NOOP);
-        ADVANCE_LP_RING();
+static void intel_overlay_off_tail(struct intel_overlay *overlay)
+{
+       struct drm_gem_object *obj;
 
-       overlay->last_flip_req =
-               i915_add_request(dev, NULL, 0, &dev_priv->render_ring);
-       if (overlay->last_flip_req == 0)
-               return -ENOMEM;
+       /* never have the overlay hw on without showing a frame */
+       BUG_ON(!overlay->vid_bo);
+       obj = &overlay->vid_bo->base;
 
-       ret = i915_do_wait_request(dev, overlay->last_flip_req,
-                       1, &dev_priv->render_ring);
-       if (ret != 0)
-               return ret;
+       i915_gem_object_unpin(obj);
+       drm_gem_object_unreference(obj);
+       overlay->vid_bo = NULL;
 
-       overlay->hw_wedged = 0;
-       overlay->last_flip_req = 0;
-       return 0;
+       overlay->crtc->overlay = NULL;
+       overlay->crtc = NULL;
+       overlay->active = 0;
 }
 
 /* overlay needs to be disabled in OCMD reg */
-static int intel_overlay_off(struct intel_overlay *overlay)
+static int intel_overlay_off(struct intel_overlay *overlay,
+                            bool interruptible)
 {
-       u32 flip_addr = overlay->flip_addr;
        struct drm_device *dev = overlay->dev;
-       drm_i915_private_t *dev_priv = dev->dev_private;
-       int ret;
+       u32 flip_addr = overlay->flip_addr;
+       struct drm_i915_gem_request *request;
 
        BUG_ON(!overlay->active);
 
+       request = kzalloc(sizeof(*request), GFP_KERNEL);
+       if (request == NULL)
+               return -ENOMEM;
+
        /* According to intel docs the overlay hw may hang (when switching
         * off) without loading the filter coeffs. It is however unclear whether
         * this applies to the disabling of the overlay or to the switching off
         * of the hw. Do it in both cases */
        flip_addr |= OFC_UPDATE;
 
+       BEGIN_LP_RING(6);
        /* wait for overlay to go idle */
-       overlay->hw_wedged = SWITCH_OFF_STAGE_1;
-
-       BEGIN_LP_RING(4);
        OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_CONTINUE);
        OUT_RING(flip_addr);
-        OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
-        OUT_RING(MI_NOOP);
-        ADVANCE_LP_RING();
-
-       overlay->last_flip_req =
-               i915_add_request(dev, NULL, 0, &dev_priv->render_ring);
-       if (overlay->last_flip_req == 0)
-               return -ENOMEM;
-
-       ret = i915_do_wait_request(dev, overlay->last_flip_req,
-                       1, &dev_priv->render_ring);
-       if (ret != 0)
-               return ret;
-
+       OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
        /* turn overlay off */
-       overlay->hw_wedged = SWITCH_OFF_STAGE_2;
-
-       BEGIN_LP_RING(4);
-        OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
+       OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
        OUT_RING(flip_addr);
-        OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
-        OUT_RING(MI_NOOP);
+       OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
        ADVANCE_LP_RING();
 
-       overlay->last_flip_req =
-               i915_add_request(dev, NULL, 0, &dev_priv->render_ring);
-       if (overlay->last_flip_req == 0)
-               return -ENOMEM;
-
-       ret = i915_do_wait_request(dev, overlay->last_flip_req,
-                       1, &dev_priv->render_ring);
-       if (ret != 0)
-               return ret;
-
-       overlay->hw_wedged = 0;
-       overlay->last_flip_req = 0;
-       return ret;
-}
-
-static void intel_overlay_off_tail(struct intel_overlay *overlay)
-{
-       struct drm_gem_object *obj;
-
-       /* never have the overlay hw on without showing a frame */
-       BUG_ON(!overlay->vid_bo);
-       obj = &overlay->vid_bo->base;
-
-       i915_gem_object_unpin(obj);
-       drm_gem_object_unreference(obj);
-       overlay->vid_bo = NULL;
-
-       overlay->crtc->overlay = NULL;
-       overlay->crtc = NULL;
-       overlay->active = 0;
+       return intel_overlay_do_wait_request(overlay, request, interruptible,
+                                            intel_overlay_off_tail);
 }
 
 /* recover from an interruption due to a signal
  * We have to be careful not to repeat work forever an make forward progess. */
-int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay,
-                                        int interruptible)
+static int intel_overlay_recover_from_interrupt(struct intel_overlay *overlay,
+                                               bool interruptible)
 {
        struct drm_device *dev = overlay->dev;
-       struct drm_gem_object *obj;
        drm_i915_private_t *dev_priv = dev->dev_private;
-       u32 flip_addr;
        int ret;
 
-       if (overlay->hw_wedged == HW_WEDGED)
-               return -EIO;
-
-       if (overlay->last_flip_req == 0) {
-               overlay->last_flip_req =
-                       i915_add_request(dev, NULL, 0, &dev_priv->render_ring);
-               if (overlay->last_flip_req == 0)
-                       return -ENOMEM;
-       }
+       if (overlay->last_flip_req == 0)
+               return 0;
 
        ret = i915_do_wait_request(dev, overlay->last_flip_req,
-                       interruptible, &dev_priv->render_ring);
-       if (ret != 0)
+                                  interruptible, &dev_priv->render_ring);
+       if (ret)
                return ret;
 
-       switch (overlay->hw_wedged) {
-               case RELEASE_OLD_VID:
-                       obj = &overlay->old_vid_bo->base;
-                       i915_gem_object_unpin(obj);
-                       drm_gem_object_unreference(obj);
-                       overlay->old_vid_bo = NULL;
-                       break;
-               case SWITCH_OFF_STAGE_1:
-                       flip_addr = overlay->flip_addr;
-                       flip_addr |= OFC_UPDATE;
-
-                       overlay->hw_wedged = SWITCH_OFF_STAGE_2;
-
-                       BEGIN_LP_RING(4);
-                       OUT_RING(MI_OVERLAY_FLIP | MI_OVERLAY_OFF);
-                       OUT_RING(flip_addr);
-                       OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
-                       OUT_RING(MI_NOOP);
-                       ADVANCE_LP_RING();
-
-                       overlay->last_flip_req = i915_add_request(dev, NULL,
-                                       0, &dev_priv->render_ring);
-                       if (overlay->last_flip_req == 0)
-                               return -ENOMEM;
-
-                       ret = i915_do_wait_request(dev, overlay->last_flip_req,
-                                       interruptible, &dev_priv->render_ring);
-                       if (ret != 0)
-                               return ret;
-
-               case SWITCH_OFF_STAGE_2:
-                       intel_overlay_off_tail(overlay);
-                       break;
-               default:
-                       BUG_ON(overlay->hw_wedged != NEEDS_WAIT_FOR_FLIP);
-       }
+       if (overlay->flip_tail)
+               overlay->flip_tail(overlay);
 
-       overlay->hw_wedged = 0;
        overlay->last_flip_req = 0;
        return 0;
 }
 
 /* Wait for pending overlay flip and release old frame.
  * Needs to be called before the overlay register are changed
- * via intel_overlay_(un)map_regs_atomic */
+ * via intel_overlay_(un)map_regs
+ */
 static int intel_overlay_release_old_vid(struct intel_overlay *overlay)
 {
+       struct drm_device *dev = overlay->dev;
+       drm_i915_private_t *dev_priv = dev->dev_private;
        int ret;
-       struct drm_gem_object *obj;
 
-       /* only wait if there is actually an old frame to release to
-        * guarantee forward progress */
+       /* Only wait if there is actually an old frame to release to
+        * guarantee forward progress.
+        */
        if (!overlay->old_vid_bo)
                return 0;
 
-       ret = intel_overlay_wait_flip(overlay);
-       if (ret != 0)
-               return ret;
+       if (I915_READ(ISR) & I915_OVERLAY_PLANE_FLIP_PENDING_INTERRUPT) {
+               struct drm_i915_gem_request *request;
 
-       obj = &overlay->old_vid_bo->base;
-       i915_gem_object_unpin(obj);
-       drm_gem_object_unreference(obj);
-       overlay->old_vid_bo = NULL;
+               /* synchronous slowpath */
+               request = kzalloc(sizeof(*request), GFP_KERNEL);
+               if (request == NULL)
+                       return -ENOMEM;
+
+               BEGIN_LP_RING(2);
+               OUT_RING(MI_WAIT_FOR_EVENT | MI_WAIT_FOR_OVERLAY_FLIP);
+               OUT_RING(MI_NOOP);
+               ADVANCE_LP_RING();
+
+               ret = intel_overlay_do_wait_request(overlay, request, true,
+                                                   intel_overlay_release_old_vid_tail);
+               if (ret)
+                       return ret;
+       }
 
+       intel_overlay_release_old_vid_tail(overlay);
        return 0;
 }
 
@@ -506,50 +502,50 @@ struct put_image_params {
 static int packed_depth_bytes(u32 format)
 {
        switch (format & I915_OVERLAY_DEPTH_MASK) {
-               case I915_OVERLAY_YUV422:
-                       return 4;
-               case I915_OVERLAY_YUV411:
-                       /* return 6; not implemented */
-               default:
-                       return -EINVAL;
+       case I915_OVERLAY_YUV422:
+               return 4;
+       case I915_OVERLAY_YUV411:
+               /* return 6; not implemented */
+       default:
+               return -EINVAL;
        }
 }
 
 static int packed_width_bytes(u32 format, short width)
 {
        switch (format & I915_OVERLAY_DEPTH_MASK) {
-               case I915_OVERLAY_YUV422:
-                       return width << 1;
-               default:
-                       return -EINVAL;
+       case I915_OVERLAY_YUV422:
+               return width << 1;
+       default:
+               return -EINVAL;
        }
 }
 
 static int uv_hsubsampling(u32 format)
 {
        switch (format & I915_OVERLAY_DEPTH_MASK) {
-               case I915_OVERLAY_YUV422:
-               case I915_OVERLAY_YUV420:
-                       return 2;
-               case I915_OVERLAY_YUV411:
-               case I915_OVERLAY_YUV410:
-                       return 4;
-               default:
-                       return -EINVAL;
+       case I915_OVERLAY_YUV422:
+       case I915_OVERLAY_YUV420:
+               return 2;
+       case I915_OVERLAY_YUV411:
+       case I915_OVERLAY_YUV410:
+               return 4;
+       default:
+               return -EINVAL;
        }
 }
 
 static int uv_vsubsampling(u32 format)
 {
        switch (format & I915_OVERLAY_DEPTH_MASK) {
-               case I915_OVERLAY_YUV420:
-               case I915_OVERLAY_YUV410:
-                       return 2;
-               case I915_OVERLAY_YUV422:
-               case I915_OVERLAY_YUV411:
-                       return 1;
-               default:
-                       return -EINVAL;
+       case I915_OVERLAY_YUV420:
+       case I915_OVERLAY_YUV410:
+               return 2;
+       case I915_OVERLAY_YUV422:
+       case I915_OVERLAY_YUV411:
+               return 1;
+       default:
+               return -EINVAL;
        }
 }
 
@@ -587,7 +583,9 @@ static const u16 y_static_hcoeffs[N_HORIZ_Y_TAPS * N_PHASES] = {
        0x3020, 0xb340, 0x1fb8, 0x34a0, 0xb060,
        0x3020, 0xb240, 0x1fe0, 0x32e0, 0xb040,
        0x3020, 0xb140, 0x1ff8, 0x3160, 0xb020,
-       0xb000, 0x3000, 0x0800, 0x3000, 0xb000};
+       0xb000, 0x3000, 0x0800, 0x3000, 0xb000
+};
+
 static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
        0x3000, 0x1800, 0x1800, 0xb000, 0x18d0, 0x2e60,
        0xb000, 0x1990, 0x2ce0, 0xb020, 0x1a68, 0x2b40,
@@ -597,7 +595,8 @@ static const u16 uv_static_hcoeffs[N_HORIZ_UV_TAPS * N_PHASES] = {
        0xb100, 0x1eb8, 0x3620, 0xb100, 0x1f18, 0x34a0,
        0xb100, 0x1f68, 0x3360, 0xb0e0, 0x1fa8, 0x3240,
        0xb0c0, 0x1fe0, 0x3140, 0xb060, 0x1ff0, 0x30a0,
-       0x3000, 0x0800, 0x3000};
+       0x3000, 0x0800, 0x3000
+};
 
 static void update_polyphase_filter(struct overlay_registers *regs)
 {
@@ -630,29 +629,31 @@ static bool update_scaling_factors(struct intel_overlay *overlay,
                yscale = 1 << FP_SHIFT;
 
        /*if (params->format & I915_OVERLAY_YUV_PLANAR) {*/
-               xscale_UV = xscale/uv_hscale;
-               yscale_UV = yscale/uv_vscale;
-               /* make the Y scale to UV scale ratio an exact multiply */
-               xscale = xscale_UV * uv_hscale;
-               yscale = yscale_UV * uv_vscale;
+       xscale_UV = xscale/uv_hscale;
+       yscale_UV = yscale/uv_vscale;
+       /* make the Y scale to UV scale ratio an exact multiply */
+       xscale = xscale_UV * uv_hscale;
+       yscale = yscale_UV * uv_vscale;
        /*} else {
-               xscale_UV = 0;
-               yscale_UV = 0;
-       }*/
+         xscale_UV = 0;
+         yscale_UV = 0;
+         }*/
 
        if (xscale != overlay->old_xscale || yscale != overlay->old_yscale)
                scale_changed = true;
        overlay->old_xscale = xscale;
        overlay->old_yscale = yscale;
 
-       regs->YRGBSCALE = ((yscale & FRACT_MASK) << 20)
-               | ((xscale >> FP_SHIFT) << 16)
-               | ((xscale & FRACT_MASK) << 3);
-       regs->UVSCALE = ((yscale_UV & FRACT_MASK) << 20)
-               | ((xscale_UV >> FP_SHIFT) << 16)
-               | ((xscale_UV & FRACT_MASK) << 3);
-       regs->UVSCALEV = ((yscale >> FP_SHIFT) << 16)
-               | ((yscale_UV >> FP_SHIFT) << 0);
+       regs->YRGBSCALE = (((yscale & FRACT_MASK) << 20) |
+                          ((xscale >> FP_SHIFT)  << 16) |
+                          ((xscale & FRACT_MASK) << 3));
+
+       regs->UVSCALE = (((yscale_UV & FRACT_MASK) << 20) |
+                        ((xscale_UV >> FP_SHIFT)  << 16) |
+                        ((xscale_UV & FRACT_MASK) << 3));
+
+       regs->UVSCALEV = ((((yscale    >> FP_SHIFT) << 16) |
+                          ((yscale_UV >> FP_SHIFT) << 0)));
 
        if (scale_changed)
                update_polyphase_filter(regs);
@@ -664,22 +665,28 @@ static void update_colorkey(struct intel_overlay *overlay,
                            struct overlay_registers *regs)
 {
        u32 key = overlay->color_key;
+
        switch (overlay->crtc->base.fb->bits_per_pixel) {
-               case 8:
-                       regs->DCLRKV = 0;
-                       regs->DCLRKM = CLK_RGB8I_MASK | DST_KEY_ENABLE;
-               case 16:
-                       if (overlay->crtc->base.fb->depth == 15) {
-                               regs->DCLRKV = RGB15_TO_COLORKEY(key);
-                               regs->DCLRKM = CLK_RGB15_MASK | DST_KEY_ENABLE;
-                       } else {
-                               regs->DCLRKV = RGB16_TO_COLORKEY(key);
-                               regs->DCLRKM = CLK_RGB16_MASK | DST_KEY_ENABLE;
-                       }
-               case 24:
-               case 32:
-                       regs->DCLRKV = key;
-                       regs->DCLRKM = CLK_RGB24_MASK | DST_KEY_ENABLE;
+       case 8:
+               regs->DCLRKV = 0;
+               regs->DCLRKM = CLK_RGB8I_MASK | DST_KEY_ENABLE;
+               break;
+
+       case 16:
+               if (overlay->crtc->base.fb->depth == 15) {
+                       regs->DCLRKV = RGB15_TO_COLORKEY(key);
+                       regs->DCLRKM = CLK_RGB15_MASK | DST_KEY_ENABLE;
+               } else {
+                       regs->DCLRKV = RGB16_TO_COLORKEY(key);
+                       regs->DCLRKM = CLK_RGB16_MASK | DST_KEY_ENABLE;
+               }
+               break;
+
+       case 24:
+       case 32:
+               regs->DCLRKV = key;
+               regs->DCLRKM = CLK_RGB24_MASK | DST_KEY_ENABLE;
+               break;
        }
 }
 
@@ -689,48 +696,48 @@ static u32 overlay_cmd_reg(struct put_image_params *params)
 
        if (params->format & I915_OVERLAY_YUV_PLANAR) {
                switch (params->format & I915_OVERLAY_DEPTH_MASK) {
-                       case I915_OVERLAY_YUV422:
-                               cmd |= OCMD_YUV_422_PLANAR;
-                               break;
-                       case I915_OVERLAY_YUV420:
-                               cmd |= OCMD_YUV_420_PLANAR;
-                               break;
-                       case I915_OVERLAY_YUV411:
-                       case I915_OVERLAY_YUV410:
-                               cmd |= OCMD_YUV_410_PLANAR;
-                               break;
+               case I915_OVERLAY_YUV422:
+                       cmd |= OCMD_YUV_422_PLANAR;
+                       break;
+               case I915_OVERLAY_YUV420:
+                       cmd |= OCMD_YUV_420_PLANAR;
+                       break;
+               case I915_OVERLAY_YUV411:
+               case I915_OVERLAY_YUV410:
+                       cmd |= OCMD_YUV_410_PLANAR;
+                       break;
                }
        } else { /* YUV packed */
                switch (params->format & I915_OVERLAY_DEPTH_MASK) {
-                       case I915_OVERLAY_YUV422:
-                               cmd |= OCMD_YUV_422_PACKED;
-                               break;
-                       case I915_OVERLAY_YUV411:
-                               cmd |= OCMD_YUV_411_PACKED;
-                               break;
+               case I915_OVERLAY_YUV422:
+                       cmd |= OCMD_YUV_422_PACKED;
+                       break;
+               case I915_OVERLAY_YUV411:
+                       cmd |= OCMD_YUV_411_PACKED;
+                       break;
                }
 
                switch (params->format & I915_OVERLAY_SWAP_MASK) {
-                       case I915_OVERLAY_NO_SWAP:
-                               break;
-                       case I915_OVERLAY_UV_SWAP:
-                               cmd |= OCMD_UV_SWAP;
-                               break;
-                       case I915_OVERLAY_Y_SWAP:
-                               cmd |= OCMD_Y_SWAP;
-                               break;
-                       case I915_OVERLAY_Y_AND_UV_SWAP:
-                               cmd |= OCMD_Y_AND_UV_SWAP;
-                               break;
+               case I915_OVERLAY_NO_SWAP:
+                       break;
+               case I915_OVERLAY_UV_SWAP:
+                       cmd |= OCMD_UV_SWAP;
+                       break;
+               case I915_OVERLAY_Y_SWAP:
+                       cmd |= OCMD_Y_SWAP;
+                       break;
+               case I915_OVERLAY_Y_AND_UV_SWAP:
+                       cmd |= OCMD_Y_AND_UV_SWAP;
+                       break;
                }
        }
 
        return cmd;
 }
 
-int intel_overlay_do_put_image(struct intel_overlay *overlay,
-                              struct drm_gem_object *new_bo,
-                              struct put_image_params *params)
+static int intel_overlay_do_put_image(struct intel_overlay *overlay,
+                                     struct drm_gem_object *new_bo,
+                                     struct put_image_params *params)
 {
        int ret, tmp_width;
        struct overlay_registers *regs;
@@ -755,7 +762,7 @@ int intel_overlay_do_put_image(struct intel_overlay *overlay,
                goto out_unpin;
 
        if (!overlay->active) {
-               regs = intel_overlay_map_regs_atomic(overlay);
+               regs = intel_overlay_map_regs(overlay);
                if (!regs) {
                        ret = -ENOMEM;
                        goto out_unpin;
@@ -765,14 +772,14 @@ int intel_overlay_do_put_image(struct intel_overlay *overlay,
                        regs->OCONFIG |= OCONF_CSC_MODE_BT709;
                regs->OCONFIG |= overlay->crtc->pipe == 0 ?
                        OCONF_PIPE_A : OCONF_PIPE_B;
-               intel_overlay_unmap_regs_atomic(overlay);
+               intel_overlay_unmap_regs(overlay, regs);
 
                ret = intel_overlay_on(overlay);
                if (ret != 0)
                        goto out_unpin;
        }
 
-       regs = intel_overlay_map_regs_atomic(overlay);
+       regs = intel_overlay_map_regs(overlay);
        if (!regs) {
                ret = -ENOMEM;
                goto out_unpin;
@@ -788,7 +795,7 @@ int intel_overlay_do_put_image(struct intel_overlay *overlay,
 
        regs->SWIDTH = params->src_w;
        regs->SWIDTHSW = calc_swidthsw(overlay->dev,
-                       params->offset_Y, tmp_width);
+                                      params->offset_Y, tmp_width);
        regs->SHEIGHT = params->src_h;
        regs->OBUF_0Y = bo_priv->gtt_offset + params-> offset_Y;
        regs->OSTRIDE = params->stride_Y;
@@ -799,9 +806,9 @@ int intel_overlay_do_put_image(struct intel_overlay *overlay,
                u32 tmp_U, tmp_V;
                regs->SWIDTH |= (params->src_w/uv_hscale) << 16;
                tmp_U = calc_swidthsw(overlay->dev, params->offset_U,
-                               params->src_w/uv_hscale);
+                                     params->src_w/uv_hscale);
                tmp_V = calc_swidthsw(overlay->dev, params->offset_V,
-                               params->src_w/uv_hscale);
+                                     params->src_w/uv_hscale);
                regs->SWIDTHSW |= max_t(u32, tmp_U, tmp_V) << 16;
                regs->SHEIGHT |= (params->src_h/uv_vscale) << 16;
                regs->OBUF_0U = bo_priv->gtt_offset + params->offset_U;
@@ -815,9 +822,11 @@ int intel_overlay_do_put_image(struct intel_overlay *overlay,
 
        regs->OCMD = overlay_cmd_reg(params);
 
-       intel_overlay_unmap_regs_atomic(overlay);
+       intel_overlay_unmap_regs(overlay, regs);
 
-       intel_overlay_continue(overlay, scale_changed);
+       ret = intel_overlay_continue(overlay, scale_changed);
+       if (ret)
+               goto out_unpin;
 
        overlay->old_vid_bo = overlay->vid_bo;
        overlay->vid_bo = to_intel_bo(new_bo);
@@ -829,20 +838,19 @@ out_unpin:
        return ret;
 }
 
-int intel_overlay_switch_off(struct intel_overlay *overlay)
+int intel_overlay_switch_off(struct intel_overlay *overlay,
+                            bool interruptible)
 {
-       int ret;
        struct overlay_registers *regs;
        struct drm_device *dev = overlay->dev;
+       int ret;
 
        BUG_ON(!mutex_is_locked(&dev->struct_mutex));
        BUG_ON(!mutex_is_locked(&dev->mode_config.mutex));
 
-       if (overlay->hw_wedged) {
-               ret = intel_overlay_recover_from_interrupt(overlay, 1);
-               if (ret != 0)
-                       return ret;
-       }
+       ret = intel_overlay_recover_from_interrupt(overlay, interruptible);
+       if (ret != 0)
+               return ret;
 
        if (!overlay->active)
                return 0;
@@ -851,33 +859,29 @@ int intel_overlay_switch_off(struct intel_overlay *overlay)
        if (ret != 0)
                return ret;
 
-       regs = intel_overlay_map_regs_atomic(overlay);
+       regs = intel_overlay_map_regs(overlay);
        regs->OCMD = 0;
-       intel_overlay_unmap_regs_atomic(overlay);
+       intel_overlay_unmap_regs(overlay, regs);
 
-       ret = intel_overlay_off(overlay);
+       ret = intel_overlay_off(overlay, interruptible);
        if (ret != 0)
                return ret;
 
        intel_overlay_off_tail(overlay);
-
        return 0;
 }
 
 static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
                                          struct intel_crtc *crtc)
 {
-        drm_i915_private_t *dev_priv = overlay->dev->dev_private;
-       u32 pipeconf;
-       int pipeconf_reg = (crtc->pipe == 0) ? PIPEACONF : PIPEBCONF;
+       drm_i915_private_t *dev_priv = overlay->dev->dev_private;
 
-       if (!crtc->base.enabled || crtc->dpms_mode != DRM_MODE_DPMS_ON)
+       if (!crtc->active)
                return -EINVAL;
 
-       pipeconf = I915_READ(pipeconf_reg);
-
        /* can't use the overlay with double wide pipe */
-       if (!IS_I965G(overlay->dev) && pipeconf & PIPEACONF_DOUBLE_WIDE)
+       if (!IS_I965G(overlay->dev) &&
+           (I915_READ(PIPECONF(crtc->pipe)) & (PIPECONF_DOUBLE_WIDE | PIPECONF_ENABLE)) != PIPECONF_ENABLE)
                return -EINVAL;
 
        return 0;
@@ -886,20 +890,21 @@ static int check_overlay_possible_on_crtc(struct intel_overlay *overlay,
 static void update_pfit_vscale_ratio(struct intel_overlay *overlay)
 {
        struct drm_device *dev = overlay->dev;
-        drm_i915_private_t *dev_priv = dev->dev_private;
-       u32 ratio;
+       drm_i915_private_t *dev_priv = dev->dev_private;
        u32 pfit_control = I915_READ(PFIT_CONTROL);
+       u32 ratio;
 
        /* XXX: This is not the same logic as in the xorg driver, but more in
-        * line with the intel documentation for the i965 */
-       if (!IS_I965G(dev) && (pfit_control & VERT_AUTO_SCALE)) {
-               ratio = I915_READ(PFIT_AUTO_RATIOS) >> PFIT_VERT_SCALE_SHIFT;
-       } else { /* on i965 use the PGM reg to read out the autoscaler values */
-               ratio = I915_READ(PFIT_PGM_RATIOS);
-               if (IS_I965G(dev))
-                       ratio >>= PFIT_VERT_SCALE_SHIFT_965;
+        * line with the intel documentation for the i965
+        */
+       if (!IS_I965G(dev)) {
+               if (pfit_control & VERT_AUTO_SCALE)
+                       ratio = I915_READ(PFIT_AUTO_RATIOS);
                else
-                       ratio >>= PFIT_VERT_SCALE_SHIFT;
+                       ratio = I915_READ(PFIT_PGM_RATIOS);
+               ratio >>= PFIT_VERT_SCALE_SHIFT;
+       } else { /* on i965 use the PGM reg to read out the autoscaler values */
+               ratio = I915_READ(PFIT_PGM_RATIOS) >> PFIT_VERT_SCALE_SHIFT_965;
        }
 
        overlay->pfit_vscale_ratio = ratio;
@@ -910,12 +915,10 @@ static int check_overlay_dst(struct intel_overlay *overlay,
 {
        struct drm_display_mode *mode = &overlay->crtc->base.mode;
 
-       if ((rec->dst_x < mode->crtc_hdisplay)
-           && (rec->dst_x + rec->dst_width
-                   <= mode->crtc_hdisplay)
-           && (rec->dst_y < mode->crtc_vdisplay)
-           && (rec->dst_y + rec->dst_height
-                   <= mode->crtc_vdisplay))
+       if (rec->dst_x < mode->crtc_hdisplay &&
+           rec->dst_x + rec->dst_width <= mode->crtc_hdisplay &&
+           rec->dst_y < mode->crtc_vdisplay &&
+           rec->dst_y + rec->dst_height <= mode->crtc_vdisplay)
                return 0;
        else
                return -EINVAL;
@@ -940,53 +943,57 @@ static int check_overlay_src(struct drm_device *dev,
                             struct drm_intel_overlay_put_image *rec,
                             struct drm_gem_object *new_bo)
 {
-       u32 stride_mask;
-       int depth;
        int uv_hscale = uv_hsubsampling(rec->flags);
        int uv_vscale = uv_vsubsampling(rec->flags);
-       size_t tmp;
+       u32 stride_mask, depth, tmp;
 
        /* check src dimensions */
        if (IS_845G(dev) || IS_I830(dev)) {
-               if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY
-                   || rec->src_width > IMAGE_MAX_WIDTH_LEGACY)
+               if (rec->src_height > IMAGE_MAX_HEIGHT_LEGACY ||
+                   rec->src_width  > IMAGE_MAX_WIDTH_LEGACY)
                        return -EINVAL;
        } else {
-               if (rec->src_height > IMAGE_MAX_HEIGHT
-                   || rec->src_width > IMAGE_MAX_WIDTH)
+               if (rec->src_height > IMAGE_MAX_HEIGHT ||
+                   rec->src_width  > IMAGE_MAX_WIDTH)
                        return -EINVAL;
        }
+
        /* better safe than sorry, use 4 as the maximal subsampling ratio */
-       if (rec->src_height < N_VERT_Y_TAPS*4
-           || rec->src_width < N_HORIZ_Y_TAPS*4)
+       if (rec->src_height < N_VERT_Y_TAPS*4 ||
+           rec->src_width  < N_HORIZ_Y_TAPS*4)
                return -EINVAL;
 
        /* check alignment constraints */
        switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
-               case I915_OVERLAY_RGB:
-                       /* not implemented */
+       case I915_OVERLAY_RGB:
+               /* not implemented */
+               return -EINVAL;
+
+       case I915_OVERLAY_YUV_PACKED:
+               if (uv_vscale != 1)
                        return -EINVAL;
-               case I915_OVERLAY_YUV_PACKED:
-                       depth = packed_depth_bytes(rec->flags);
-                       if (uv_vscale != 1)
-                               return -EINVAL;
-                       if (depth < 0)
-                               return depth;
-                       /* ignore UV planes */
-                       rec->stride_UV = 0;
-                       rec->offset_U = 0;
-                       rec->offset_V = 0;
-                       /* check pixel alignment */
-                       if (rec->offset_Y % depth)
-                               return -EINVAL;
-                       break;
-               case I915_OVERLAY_YUV_PLANAR:
-                       if (uv_vscale < 0 || uv_hscale < 0)
-                               return -EINVAL;
-                       /* no offset restrictions for planar formats */
-                       break;
-               default:
+
+               depth = packed_depth_bytes(rec->flags);
+               if (depth < 0)
+                       return depth;
+
+               /* ignore UV planes */
+               rec->stride_UV = 0;
+               rec->offset_U = 0;
+               rec->offset_V = 0;
+               /* check pixel alignment */
+               if (rec->offset_Y % depth)
                        return -EINVAL;
+               break;
+
+       case I915_OVERLAY_YUV_PLANAR:
+               if (uv_vscale < 0 || uv_hscale < 0)
+                       return -EINVAL;
+               /* no offset restrictions for planar formats */
+               break;
+
+       default:
+               return -EINVAL;
        }
 
        if (rec->src_width % uv_hscale)
@@ -1004,43 +1011,70 @@ static int check_overlay_src(struct drm_device *dev,
                return -EINVAL;
 
        tmp = (rec->flags & I915_OVERLAY_TYPE_MASK) == I915_OVERLAY_YUV_PLANAR ?
-               4 : 8;
-       if (rec->stride_Y > tmp*1024 || rec->stride_UV > 2*1024)
+               4096 : 8192;
+       if (rec->stride_Y > tmp || rec->stride_UV > 2*1024)
                return -EINVAL;
 
        /* check buffer dimensions */
        switch (rec->flags & I915_OVERLAY_TYPE_MASK) {
-               case I915_OVERLAY_RGB:
-               case I915_OVERLAY_YUV_PACKED:
-                       /* always 4 Y values per depth pixels */
-                       if (packed_width_bytes(rec->flags, rec->src_width)
-                                       > rec->stride_Y)
-                               return -EINVAL;
-
-                       tmp = rec->stride_Y*rec->src_height;
-                       if (rec->offset_Y + tmp > new_bo->size)
-                               return -EINVAL;
-                       break;
-               case I915_OVERLAY_YUV_PLANAR:
-                       if (rec->src_width > rec->stride_Y)
-                               return -EINVAL;
-                       if (rec->src_width/uv_hscale > rec->stride_UV)
-                               return -EINVAL;
-
-                       tmp = rec->stride_Y*rec->src_height;
-                       if (rec->offset_Y + tmp > new_bo->size)
-                               return -EINVAL;
-                       tmp = rec->stride_UV*rec->src_height;
-                       tmp /= uv_vscale;
-                       if (rec->offset_U + tmp > new_bo->size
-                           || rec->offset_V + tmp > new_bo->size)
-                               return -EINVAL;
-                       break;
+       case I915_OVERLAY_RGB:
+       case I915_OVERLAY_YUV_PACKED:
+               /* always 4 Y values per depth pixels */
+               if (packed_width_bytes(rec->flags, rec->src_width) > rec->stride_Y)
+                       return -EINVAL;
+
+               tmp = rec->stride_Y*rec->src_height;
+               if (rec->offset_Y + tmp > new_bo->size)
+                       return -EINVAL;
+               break;
+
+       case I915_OVERLAY_YUV_PLANAR:
+               if (rec->src_width > rec->stride_Y)
+                       return -EINVAL;
+               if (rec->src_width/uv_hscale > rec->stride_UV)
+                       return -EINVAL;
+
+               tmp = rec->stride_Y * rec->src_height;
+               if (rec->offset_Y + tmp > new_bo->size)
+                       return -EINVAL;
+
+               tmp = rec->stride_UV * (rec->src_height / uv_vscale);
+               if (rec->offset_U + tmp > new_bo->size ||
+                   rec->offset_V + tmp > new_bo->size)
+                       return -EINVAL;
+               break;
        }
 
        return 0;
 }
 
+/**
+ * Return the pipe currently connected to the panel fitter,
+ * or -1 if the panel fitter is not present or not in use
+ */
+static int intel_panel_fitter_pipe(struct drm_device *dev)
+{
+       struct drm_i915_private *dev_priv = dev->dev_private;
+       u32  pfit_control;
+
+       /* i830 doesn't have a panel fitter */
+       if (IS_I830(dev))
+               return -1;
+
+       pfit_control = I915_READ(PFIT_CONTROL);
+
+       /* See if the panel fitter is in use */
+       if ((pfit_control & PFIT_ENABLE) == 0)
+               return -1;
+
+       /* 965 can place panel fitter on either pipe */
+       if (IS_I965G(dev))
+               return (pfit_control >> 29) & 0x3;
+
+       /* older chips can only use pipe 1 */
+       return 1;
+}
+
 int intel_overlay_put_image(struct drm_device *dev, void *data,
                             struct drm_file *file_priv)
 {
@@ -1068,7 +1102,7 @@ int intel_overlay_put_image(struct drm_device *dev, void *data,
                mutex_lock(&dev->mode_config.mutex);
                mutex_lock(&dev->struct_mutex);
 
-               ret = intel_overlay_switch_off(overlay);
+               ret = intel_overlay_switch_off(overlay, true);
 
                mutex_unlock(&dev->struct_mutex);
                mutex_unlock(&dev->mode_config.mutex);
@@ -1081,7 +1115,7 @@ int intel_overlay_put_image(struct drm_device *dev, void *data,
                return -ENOMEM;
 
        drmmode_obj = drm_mode_object_find(dev, put_image_rec->crtc_id,
-                        DRM_MODE_OBJECT_CRTC);
+                                          DRM_MODE_OBJECT_CRTC);
        if (!drmmode_obj) {
                ret = -ENOENT;
                goto out_free;
@@ -1089,7 +1123,7 @@ int intel_overlay_put_image(struct drm_device *dev, void *data,
        crtc = to_intel_crtc(obj_to_crtc(drmmode_obj));
 
        new_bo = drm_gem_object_lookup(dev, file_priv,
-                       put_image_rec->bo_handle);
+                                      put_image_rec->bo_handle);
        if (!new_bo) {
                ret = -ENOENT;
                goto out_free;
@@ -1098,15 +1132,13 @@ int intel_overlay_put_image(struct drm_device *dev, void *data,
        mutex_lock(&dev->mode_config.mutex);
        mutex_lock(&dev->struct_mutex);
 
-       if (overlay->hw_wedged) {
-               ret = intel_overlay_recover_from_interrupt(overlay, 1);
-               if (ret != 0)
-                       goto out_unlock;
-       }
+       ret = intel_overlay_recover_from_interrupt(overlay, true);
+       if (ret != 0)
+               goto out_unlock;
 
        if (overlay->crtc != crtc) {
                struct drm_display_mode *mode = &crtc->base.mode;
-               ret = intel_overlay_switch_off(overlay);
+               ret = intel_overlay_switch_off(overlay, true);
                if (ret != 0)
                        goto out_unlock;
 
@@ -1117,9 +1149,9 @@ int intel_overlay_put_image(struct drm_device *dev, void *data,
                overlay->crtc = crtc;
                crtc->overlay = overlay;
 
-               if (intel_panel_fitter_pipe(dev) == crtc->pipe
-                   /* and line to wide, i.e. one-line-mode */
-                   && mode->hdisplay > 1024) {
+               /* line too wide, i.e. one-line-mode */
+               if (mode->hdisplay > 1024 &&
+                   intel_panel_fitter_pipe(dev) == crtc->pipe) {
                        overlay->pfit_active = 1;
                        update_pfit_vscale_ratio(overlay);
                } else
@@ -1132,10 +1164,10 @@ int intel_overlay_put_image(struct drm_device *dev, void *data,
 
        if (overlay->pfit_active) {
                params->dst_y = ((((u32)put_image_rec->dst_y) << 12) /
-                       overlay->pfit_vscale_ratio);
+                                overlay->pfit_vscale_ratio);
                /* shifting right rounds downwards, so add 1 */
                params->dst_h = ((((u32)put_image_rec->dst_height) << 12) /
-                       overlay->pfit_vscale_ratio) + 1;
+                                overlay->pfit_vscale_ratio) + 1;
        } else {
                params->dst_y = put_image_rec->dst_y;
                params->dst_h = put_image_rec->dst_height;
@@ -1147,8 +1179,8 @@ int intel_overlay_put_image(struct drm_device *dev, void *data,
        params->src_h = put_image_rec->src_height;
        params->src_scan_w = put_image_rec->src_scan_width;
        params->src_scan_h = put_image_rec->src_scan_height;
-       if (params->src_scan_h > params->src_h
-           || params->src_scan_w > params->src_w) {
+       if (params->src_scan_h > params->src_h ||
+           params->src_scan_w > params->src_w) {
                ret = -EINVAL;
                goto out_unlock;
        }
@@ -1204,7 +1236,7 @@ static bool check_gamma_bounds(u32 gamma1, u32 gamma2)
                return false;
 
        for (i = 0; i < 3; i++) {
-               if (((gamma1 >> i * 8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
+               if (((gamma1 >> i*8) & 0xff) >= ((gamma2 >> i*8) & 0xff))
                        return false;
        }
 
@@ -1225,16 +1257,18 @@ static bool check_gamma5_errata(u32 gamma5)
 
 static int check_gamma(struct drm_intel_overlay_attrs *attrs)
 {
-       if (!check_gamma_bounds(0, attrs->gamma0)
-           || !check_gamma_bounds(attrs->gamma0, attrs->gamma1)
-           || !check_gamma_bounds(attrs->gamma1, attrs->gamma2)
-           || !check_gamma_bounds(attrs->gamma2, attrs->gamma3)
-           || !check_gamma_bounds(attrs->gamma3, attrs->gamma4)
-           || !check_gamma_bounds(attrs->gamma4, attrs->gamma5)
-           || !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
+       if (!check_gamma_bounds(0, attrs->gamma0) ||
+           !check_gamma_bounds(attrs->gamma0, attrs->gamma1) ||
+           !check_gamma_bounds(attrs->gamma1, attrs->gamma2) ||
+           !check_gamma_bounds(attrs->gamma2, attrs->gamma3) ||
+           !check_gamma_bounds(attrs->gamma3, attrs->gamma4) ||
+           !check_gamma_bounds(attrs->gamma4, attrs->gamma5) ||
+           !check_gamma_bounds(attrs->gamma5, 0x00ffffff))
                return -EINVAL;
+
        if (!check_gamma5_errata(attrs->gamma5))
                return -EINVAL;
+
        return 0;
 }
 
@@ -1261,10 +1295,11 @@ int intel_overlay_attrs(struct drm_device *dev, void *data,
        mutex_lock(&dev->mode_config.mutex);
        mutex_lock(&dev->struct_mutex);
 
+       ret = -EINVAL;
        if (!(attrs->flags & I915_OVERLAY_UPDATE_ATTRS)) {
-               attrs->color_key = overlay->color_key;
+               attrs->color_key  = overlay->color_key;
                attrs->brightness = overlay->brightness;
-               attrs->contrast = overlay->contrast;
+               attrs->contrast   = overlay->contrast;
                attrs->saturation = overlay->saturation;
 
                if (IS_I9XX(dev)) {
@@ -1275,29 +1310,20 @@ int intel_overlay_attrs(struct drm_device *dev, void *data,
                        attrs->gamma4 = I915_READ(OGAMC4);
                        attrs->gamma5 = I915_READ(OGAMC5);
                }
-               ret = 0;
        } else {
-               overlay->color_key = attrs->color_key;
-               if (attrs->brightness >= -128 && attrs->brightness <= 127) {
-                       overlay->brightness = attrs->brightness;
-               } else {
-                       ret = -EINVAL;
+               if (attrs->brightness < -128 || attrs->brightness > 127)
                        goto out_unlock;
-               }
-               if (attrs->contrast <= 255) {
-                       overlay->contrast = attrs->contrast;
-               } else {
-                       ret = -EINVAL;
+               if (attrs->contrast > 255)
                        goto out_unlock;
-               }
-               if (attrs->saturation <= 1023) {
-                       overlay->saturation = attrs->saturation;
-               } else {
-                       ret = -EINVAL;
+               if (attrs->saturation > 1023)
                        goto out_unlock;
-               }
 
-               regs = intel_overlay_map_regs_atomic(overlay);
+               overlay->color_key  = attrs->color_key;
+               overlay->brightness = attrs->brightness;
+               overlay->contrast   = attrs->contrast;
+               overlay->saturation = attrs->saturation;
+
+               regs = intel_overlay_map_regs(overlay);
                if (!regs) {
                        ret = -ENOMEM;
                        goto out_unlock;
@@ -1305,13 +1331,11 @@ int intel_overlay_attrs(struct drm_device *dev, void *data,
 
                update_reg_attrs(overlay, regs);
 
-               intel_overlay_unmap_regs_atomic(overlay);
+               intel_overlay_unmap_regs(overlay, regs);
 
                if (attrs->flags & I915_OVERLAY_UPDATE_GAMMA) {
-                       if (!IS_I9XX(dev)) {
-                               ret = -EINVAL;
+                       if (!IS_I9XX(dev))
                                goto out_unlock;
-                       }
 
                        if (overlay->active) {
                                ret = -EBUSY;
@@ -1319,7 +1343,7 @@ int intel_overlay_attrs(struct drm_device *dev, void *data,
                        }
 
                        ret = check_gamma(attrs);
-                       if (ret != 0)
+                       if (ret)
                                goto out_unlock;
 
                        I915_WRITE(OGAMC0, attrs->gamma0);
@@ -1329,9 +1353,9 @@ int intel_overlay_attrs(struct drm_device *dev, void *data,
                        I915_WRITE(OGAMC4, attrs->gamma4);
                        I915_WRITE(OGAMC5, attrs->gamma5);
                }
-               ret = 0;
        }
 
+       ret = 0;
 out_unlock:
        mutex_unlock(&dev->struct_mutex);
        mutex_unlock(&dev->mode_config.mutex);
@@ -1347,7 +1371,7 @@ void intel_setup_overlay(struct drm_device *dev)
        struct overlay_registers *regs;
        int ret;
 
-       if (!OVERLAY_EXISTS(dev))
+       if (!HAS_OVERLAY(dev))
                return;
 
        overlay = kzalloc(sizeof(struct intel_overlay), GFP_KERNEL);
@@ -1360,22 +1384,28 @@ void intel_setup_overlay(struct drm_device *dev)
                goto out_free;
        overlay->reg_bo = to_intel_bo(reg_bo);
 
-       if (OVERLAY_NONPHYSICAL(dev)) {
-               ret = i915_gem_object_pin(reg_bo, PAGE_SIZE);
-               if (ret) {
-                        DRM_ERROR("failed to pin overlay register bo\n");
-                        goto out_free_bo;
-                }
-               overlay->flip_addr = overlay->reg_bo->gtt_offset;
-       } else {
+       if (OVERLAY_NEEDS_PHYSICAL(dev)) {
                ret = i915_gem_attach_phys_object(dev, reg_bo,
                                                  I915_GEM_PHYS_OVERLAY_REGS,
-                                                 0);
+                                                 PAGE_SIZE);
                 if (ret) {
                         DRM_ERROR("failed to attach phys overlay regs\n");
                         goto out_free_bo;
                 }
                overlay->flip_addr = overlay->reg_bo->phys_obj->handle->busaddr;
+       } else {
+               ret = i915_gem_object_pin(reg_bo, PAGE_SIZE);
+               if (ret) {
+                        DRM_ERROR("failed to pin overlay register bo\n");
+                        goto out_free_bo;
+                }
+               overlay->flip_addr = overlay->reg_bo->gtt_offset;
+
+               ret = i915_gem_object_set_to_gtt_domain(reg_bo, true);
+               if (ret) {
+                        DRM_ERROR("failed to move overlay register bo into the GTT\n");
+                        goto out_unpin_bo;
+                }
        }
 
        /* init all values */
@@ -1384,21 +1414,22 @@ void intel_setup_overlay(struct drm_device *dev)
        overlay->contrast = 75;
        overlay->saturation = 146;
 
-       regs = intel_overlay_map_regs_atomic(overlay);
+       regs = intel_overlay_map_regs(overlay);
        if (!regs)
                goto out_free_bo;
 
        memset(regs, 0, sizeof(struct overlay_registers));
        update_polyphase_filter(regs);
-
        update_reg_attrs(overlay, regs);
 
-       intel_overlay_unmap_regs_atomic(overlay);
+       intel_overlay_unmap_regs(overlay, regs);
 
        dev_priv->overlay = overlay;
        DRM_INFO("initialized overlay support\n");
        return;
 
+out_unpin_bo:
+       i915_gem_object_unpin(reg_bo);
 out_free_bo:
        drm_gem_object_unreference(reg_bo);
 out_free:
@@ -1408,18 +1439,23 @@ out_free:
 
 void intel_cleanup_overlay(struct drm_device *dev)
 {
-        drm_i915_private_t *dev_priv = dev->dev_private;
+       drm_i915_private_t *dev_priv = dev->dev_private;
 
-       if (dev_priv->overlay) {
-               /* The bo's should be free'd by the generic code already.
-                * Furthermore modesetting teardown happens beforehand so the
-                * hardware should be off already */
-               BUG_ON(dev_priv->overlay->active);
+       if (!dev_priv->overlay)
+               return;
 
-               kfree(dev_priv->overlay);
-       }
+       /* The bo's should be free'd by the generic code already.
+        * Furthermore modesetting teardown happens beforehand so the
+        * hardware should be off already */
+       BUG_ON(dev_priv->overlay->active);
+
+       drm_gem_object_unreference_unlocked(&dev_priv->overlay->reg_bo->base);
+       kfree(dev_priv->overlay);
 }
 
+#ifdef CONFIG_DEBUG_FS
+#include <linux/seq_file.h>
+
 struct intel_overlay_error_state {
        struct overlay_registers regs;
        unsigned long base;
@@ -1427,6 +1463,32 @@ struct intel_overlay_error_state {
        u32 isr;
 };
 
+static struct overlay_registers *
+intel_overlay_map_regs_atomic(struct intel_overlay *overlay,
+                             int slot)
+{
+        drm_i915_private_t *dev_priv = overlay->dev->dev_private;
+       struct overlay_registers *regs;
+
+       if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
+               regs = overlay->reg_bo->phys_obj->handle->vaddr;
+       else
+               regs = io_mapping_map_atomic_wc(dev_priv->mm.gtt_mapping,
+                                               overlay->reg_bo->gtt_offset,
+                                               slot);
+
+       return regs;
+}
+
+static void intel_overlay_unmap_regs_atomic(struct intel_overlay *overlay,
+                                           int slot,
+                                           struct overlay_registers *regs)
+{
+       if (!OVERLAY_NEEDS_PHYSICAL(overlay->dev))
+               io_mapping_unmap_atomic(regs, slot);
+}
+
+
 struct intel_overlay_error_state *
 intel_overlay_capture_error_state(struct drm_device *dev)
 {
@@ -1444,17 +1506,17 @@ intel_overlay_capture_error_state(struct drm_device *dev)
 
        error->dovsta = I915_READ(DOVSTA);
        error->isr = I915_READ(ISR);
-       if (OVERLAY_NONPHYSICAL(overlay->dev))
-               error->base = (long) overlay->reg_bo->gtt_offset;
-       else
+       if (OVERLAY_NEEDS_PHYSICAL(overlay->dev))
                error->base = (long) overlay->reg_bo->phys_obj->handle->vaddr;
+       else
+               error->base = (long) overlay->reg_bo->gtt_offset;
 
-       regs = intel_overlay_map_regs_atomic(overlay);
+       regs = intel_overlay_map_regs_atomic(overlay, KM_IRQ0);
        if (!regs)
                goto err;
 
        memcpy_fromio(&error->regs, regs, sizeof(struct overlay_registers));
-       intel_overlay_unmap_regs_atomic(overlay);
+       intel_overlay_unmap_regs_atomic(overlay, KM_IRQ0, regs);
 
        return error;
 
@@ -1515,3 +1577,4 @@ intel_overlay_print_error_state(struct seq_file *m, struct intel_overlay_error_s
        P(UVSCALEV);
 #undef P
 }
+#endif