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path: root/drivers/gpu/drm/i915/i915_suspend.c
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Diffstat (limited to 'drivers/gpu/drm/i915/i915_suspend.c')
-rw-r--r--drivers/gpu/drm/i915/i915_suspend.c27
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 6e2025274db5..05acc26fabf7 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -395,16 +395,20 @@ static void i915_restore_modeset_reg(struct drm_device *dev)
if (dev_priv->saveDPLL_A & DPLL_VCO_ENABLE) {
I915_WRITE(dpll_a_reg, dev_priv->saveDPLL_A &
~DPLL_VCO_ENABLE);
- DRM_UDELAY(150);
+ POSTING_READ(dpll_a_reg);
+ udelay(150);
}
I915_WRITE(fpa0_reg, dev_priv->saveFPA0);
I915_WRITE(fpa1_reg, dev_priv->saveFPA1);
/* Actually enable it */
I915_WRITE(dpll_a_reg, dev_priv->saveDPLL_A);
- DRM_UDELAY(150);
- if (IS_I965G(dev) && !IS_IRONLAKE(dev))
+ POSTING_READ(dpll_a_reg);
+ udelay(150);
+ if (IS_I965G(dev) && !IS_IRONLAKE(dev)) {
I915_WRITE(DPLL_A_MD, dev_priv->saveDPLL_A_MD);
- DRM_UDELAY(150);
+ POSTING_READ(DPLL_A_MD);
+ }
+ udelay(150);
/* Restore mode */
I915_WRITE(HTOTAL_A, dev_priv->saveHTOTAL_A);
@@ -460,16 +464,20 @@ static void i915_restore_modeset_reg(struct drm_device *dev)
if (dev_priv->saveDPLL_B & DPLL_VCO_ENABLE) {
I915_WRITE(dpll_b_reg, dev_priv->saveDPLL_B &
~DPLL_VCO_ENABLE);
- DRM_UDELAY(150);
+ POSTING_READ(dpll_b_reg);
+ udelay(150);
}
I915_WRITE(fpb0_reg, dev_priv->saveFPB0);
I915_WRITE(fpb1_reg, dev_priv->saveFPB1);
/* Actually enable it */
I915_WRITE(dpll_b_reg, dev_priv->saveDPLL_B);
- DRM_UDELAY(150);
- if (IS_I965G(dev) && !IS_IRONLAKE(dev))
+ POSTING_READ(dpll_b_reg);
+ udelay(150);
+ if (IS_I965G(dev) && !IS_IRONLAKE(dev)) {
I915_WRITE(DPLL_B_MD, dev_priv->saveDPLL_B_MD);
- DRM_UDELAY(150);
+ POSTING_READ(DPLL_B_MD);
+ }
+ udelay(150);
/* Restore mode */
I915_WRITE(HTOTAL_B, dev_priv->saveHTOTAL_B);
@@ -730,7 +738,8 @@ void i915_restore_display(struct drm_device *dev)
I915_WRITE(VGA0, dev_priv->saveVGA0);
I915_WRITE(VGA1, dev_priv->saveVGA1);
I915_WRITE(VGA_PD, dev_priv->saveVGA_PD);
- DRM_UDELAY(150);
+ POSTING_READ(VGA_PD);
+ udelay(150);
i915_restore_vga(dev);
}