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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2010-08-14 14:41:22 +0100 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2010-08-21 23:20:17 -0700 |
| commit | 72bcb2690927f04c0479cd0d83825f09f3bf4d4f (patch) | |
| tree | 19a53b4d114b896aa03af8da7aa5b11e3546965c /drivers | |
| parent | d5dd96cb280993a6096b42ab082f9cfd9c7ae0bd (diff) | |
| download | linux-72bcb2690927f04c0479cd0d83825f09f3bf4d4f.tar.gz linux-72bcb2690927f04c0479cd0d83825f09f3bf4d4f.tar.bz2 linux-72bcb2690927f04c0479cd0d83825f09f3bf4d4f.zip | |
drm/i915/suspend: Flush register writes before busy-waiting.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_suspend.c | 27 |
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); } |