[PATCH 40/81] drm/i915: Enable/disable primary plane in calc_plane()

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Check the active and primary_disabled flags and set the
DISPLAY_PLANE_ENABLE bit accordingly in calc_plane() hook for the
primary plane.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 957907c..9903456 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2068,6 +2068,11 @@ static int i9xx_calc_plane(struct drm_crtc *crtc, struct drm_framebuffer *fb,
 			regs->cntr &= ~DISPPLANE_TILED;
 	}
 
+	if (intel_crtc->active && !intel_crtc->primary_disabled)
+		regs->cntr |= DISPLAY_PLANE_ENABLE;
+	else
+		regs->cntr &= ~DISPLAY_PLANE_ENABLE;
+
 	linear_offset = y * fb->pitches[0] + x * cpp;
 
 	if (INTEL_INFO(dev)->gen >= 4) {
@@ -2175,6 +2180,11 @@ static int ironlake_calc_plane(struct drm_crtc *crtc,
 	/* must disable */
 	regs->cntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
 
+	if (intel_crtc->active && !intel_crtc->primary_disabled)
+		regs->cntr |= DISPLAY_PLANE_ENABLE;
+	else
+		regs->cntr &= ~DISPLAY_PLANE_ENABLE;
+
 	linear_offset = y * fb->pitches[0] + x * cpp;
 	intel_crtc->dspaddr_offset =
 		intel_gen4_compute_offset_xtiled(&x, &y,
-- 
1.7.8.6