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drm/i915: treat Ivy Bridge watermarks like Sandy Bridge 

Not fully tested.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
This commit is contained in:
Jesse Barnes 2011-04-28 14:29:45 -07:00 committed by Keith Packard
parent 357555c00f
commit fe100d4da1
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/i915/intel_display.c
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@ -7298,7 +7298,7 @@ void intel_enable_clock_gating(struct drm_device *dev)
_3D_CHICKEN2_WM_READ_PIPELINED);
}
if (IS_GEN6(dev)) {
if (IS_GEN6(dev) || IS_IVYBRIDGE(dev)) {
I915_WRITE(WM3_LP_ILK, 0);
I915_WRITE(WM2_LP_ILK, 0);
I915_WRITE(WM1_LP_ILK, 0);
@ -7560,6 +7560,13 @@ static void intel_init_display(struct drm_device *dev)
} else if (IS_IVYBRIDGE(dev)) {
/* FIXME: detect B0+ stepping and use auto training */
dev_priv->display.fdi_link_train = ivb_manual_fdi_link_train;
if (SNB_READ_WM0_LATENCY()) {
dev_priv->display.update_wm = sandybridge_update_wm;
} else {
DRM_DEBUG_KMS("Failed to read display plane latency. "
"Disable CxSR\n");
dev_priv->display.update_wm = NULL;
}
} else
dev_priv->display.update_wm = NULL;
} else if (IS_PINEVIEW(dev)) {