drm/i915/bdw: display stuff

Just enough to make the code not barf...

Init BDW display to look like HSW. For the simulator this should be
fine, but this will probably require more work.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
[danvet: Add a FIXME comment about RCS flips being untested on bdw.
Also add a note that hblank events are reserved on bdw+ in DERRMR.]
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

3 files changed, 4 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index f897a7092ce0..48c3aef5acaa 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -743,6 +743,7 @@
 #define   FPGA_DBG_RM_NOCLAIM   (1<<31)
 
 #define DERRMR          0x44050
+/* Note that HBLANK events are reserved on bdw+ */
 #define   DERRMR_PIPEA_SCANLINE         (1<<0)
 #define   DERRMR_PIPEA_PRI_FLIP_DONE    (1<<1)
 #define   DERRMR_PIPEA_SPR_FLIP_DONE    (1<<2)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index f34252d134b6..d5eb5a4a9cf6 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -10309,7 +10309,7 @@ static void intel_init_display(struct drm_device *dev)
                         dev_priv->display.write_eld = ironlake_write_eld;
                         dev_priv->display.modeset_global_resources =
                                 ivb_modeset_global_resources;
-                } else if (IS_HASWELL(dev)) {
+                } else if (IS_HASWELL(dev) || IS_GEN8(dev)) {
                         dev_priv->display.fdi_link_train = hsw_fdi_link_train;
                         dev_priv->display.write_eld = haswell_write_eld;
                         dev_priv->display.modeset_global_resources =
@@ -10340,6 +10340,7 @@ static void intel_init_display(struct drm_device *dev)
                 dev_priv->display.queue_flip = intel_gen6_queue_flip;
                 break;
         case 7:
+        case 8: /* FIXME(BDW): Check that the gen8 RCS flip works. */
                 dev_priv->display.queue_flip = intel_gen7_queue_flip;
                 break;
         }
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 8afaad6bcc48..f8b265c2b178 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1092,6 +1092,7 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
                 break;
 
         case 7:
+        case 8:
                 if (IS_IVYBRIDGE(dev)) {
                         intel_plane->can_scale = true;
                         intel_plane->max_downscale = 2;