[patch 15/74] drm/i915: apply G45 vblank count code to all G4x chips and fix max_frame_count

[Greg KH]

2.6.30-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>

(cherry picked from commit 42c2798b35b95c471877133e19ccc3cab00e9b65)

All G4x and newer chips use the new style frame count register, with a
full 32 bit frame count.  Update the code to reflect this.

Signed-off-by: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
 drivers/gpu/drm/i915/i915_dma.c |    5 ++++-
 drivers/gpu/drm/i915/i915_irq.c |    2 --
 2 files changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1153,8 +1153,11 @@ int i915_driver_load(struct drm_device *
 #endif
 
 	dev->driver->get_vblank_counter = i915_get_vblank_counter;
-	if (IS_GM45(dev))
+	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
+	if (IS_G4X(dev)) {
+		dev->max_vblank_count = 0xffffffff; /* full 32 bit counter */
 		dev->driver->get_vblank_counter = gm45_get_vblank_counter;
+	}
 
 	i915_gem_load(dev);
 
--- a/drivers/gpu/drm/i915/i915_irq.c
+++ b/drivers/gpu/drm/i915/i915_irq.c
@@ -572,8 +572,6 @@ int i915_driver_irq_postinstall(struct d
 
 	dev_priv->vblank_pipe = DRM_I915_VBLANK_PIPE_A | DRM_I915_VBLANK_PIPE_B;
 
-	dev->max_vblank_count = 0xffffff; /* only 24 bits of frame count */
-
 	/* Unmask the interrupts that we always want on. */
 	dev_priv->irq_mask_reg = ~I915_INTERRUPT_ENABLE_FIX;
 


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