Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux

Pull DRM update from Dave Airlie:
 "This is a bit larger due to me not bothering to do anything since
  before Xmas, and other people working too hard after I had clearly
  given up.

  It's got the 3 main x86 driver fixes pulls, and a bunch of tegra
  fixes, doesn't fix the Ironlake bug yet, but that does seem to be
  getting closer.

   - radeon: gpu reset fixes and userspace packet support
   - i915: watermark fixes, workarounds, i830/845 fix,
   - nouveau: nvd9/kepler microcode fixes, accel is now enabled and
     working, gk106 support
   - tegra: misc fixes."

* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (34 commits)
  Revert "drm: tegra: protect DC register access with mutex"
  drm: tegra: program only one window during modeset
  drm: tegra: clean out old gem prototypes
  drm: tegra: remove redundant tegra2_tmds_config entry
  drm: tegra: protect DC register access with mutex
  drm: tegra: don't leave clients host1x member uninitialized
  drm: tegra: fix front_porch <-> back_porch mixup
  drm/nve0/graph: fix fuc, and enable acceleration on all known chipsets
  drm/nvc0/graph: fix fuc, and enable acceleration on GF119
  drm/nouveau/bios: cache ramcfg strap on later chipsets
  drm/nouveau/mxm: silence output if no bios data
  drm/nouveau/bios: parse/display extra version component
  drm/nouveau/bios: implement opcode 0xa9
  drm/nouveau/bios: update gpio parsing apis to match current design
  drm/nouveau: initial support for GK106
  drm/radeon: add WAIT_UNTIL to evergreen VM safe reg list
  drm/i915: disable shrinker lock stealing for create_mmap_offset
  drm/i915: optionally disable shrinker lock stealing
  drm/i915: fix flags in dma buf exporting
  drm/radeon: add support for MEM_WRITE packet
  ...

1 files changed, 19 insertions, 4 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5d127e06895..a9fb046b94a 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8144,10 +8144,6 @@ intel_modeset_stage_output_state(struct drm_device *dev,
 			DRM_DEBUG_KMS("encoder changed, full mode switch\n");
 			config->mode_changed = true;
 		}
-
-		/* Disable all disconnected encoders. */
-		if (connector->base.status == connector_status_disconnected)
-			connector->new_encoder = NULL;
 	}
 	/* connector->new_encoder is now updated for all connectors. */
 
@@ -9167,6 +9163,23 @@ static void intel_sanitize_encoder(struct intel_encoder *encoder)
 	 * the crtc fixup. */
 }
 
+static void i915_redisable_vga(struct drm_device *dev)
+{
+	struct drm_i915_private *dev_priv = dev->dev_private;
+	u32 vga_reg;
+
+	if (HAS_PCH_SPLIT(dev))
+		vga_reg = CPU_VGACNTRL;
+	else
+		vga_reg = VGACNTRL;
+
+	if (I915_READ(vga_reg) != VGA_DISP_DISABLE) {
+		DRM_DEBUG_KMS("Something enabled VGA plane, disabling it\n");
+		I915_WRITE(vga_reg, VGA_DISP_DISABLE);
+		POSTING_READ(vga_reg);
+	}
+}
+
 /* Scan out the current hw modeset state, sanitizes it and maps it into the drm
  * and i915 state tracking structures. */
 void intel_modeset_setup_hw_state(struct drm_device *dev,
@@ -9275,6 +9288,8 @@ void intel_modeset_setup_hw_state(struct drm_device *dev,
 			intel_set_mode(&crtc->base, &crtc->base.mode,
 				       crtc->base.x, crtc->base.y, crtc->base.fb);
 		}
+
+		i915_redisable_vga(dev);
 	} else {
 		intel_modeset_update_staged_output_state(dev);
 	}