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| author | Jesse Barnes <jbarnes@virtuousgeek.org> | 2009-10-14 12:33:41 -0700 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2009-10-15 09:20:48 -0700 |
| commit | 0eb96d6ed38430b72897adde58f5477a6b71757a (patch) | |
| tree | 704c50f7b10f6b3bfe159aba2e21bbadac8c3191 /drivers/gpu/drm/i915/i915_suspend.c | |
| parent | 58a27471d00dc09945cbcfbbc5cbcdcd3c28211d (diff) | |
| download | kernel-crypto-0eb96d6ed38430b72897adde58f5477a6b71757a.tar.gz kernel-crypto-0eb96d6ed38430b72897adde58f5477a6b71757a.tar.xz kernel-crypto-0eb96d6ed38430b72897adde58f5477a6b71757a.zip | |
drm/i915: save/restore BLC histogram control reg across suspend/resume
Turns out some machines, like the ThinkPad X40 don't come back if you
don't save/restore this register.
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_suspend.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_suspend.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index 660c5f36424..75c5bed48be 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -410,6 +410,7 @@ void i915_save_display(struct drm_device *dev) dev_priv->savePP_CONTROL = I915_READ(PP_CONTROL); dev_priv->savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS); dev_priv->saveBLC_PWM_CTL = I915_READ(BLC_PWM_CTL); + dev_priv->saveBLC_HIST_CTL = I915_READ(BLC_HIST_CTL); if (IS_I965G(dev)) dev_priv->saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_CTL2); if (IS_MOBILE(dev) && !IS_I830(dev)) @@ -501,6 +502,7 @@ void i915_restore_display(struct drm_device *dev) I915_WRITE(PFIT_PGM_RATIOS, dev_priv->savePFIT_PGM_RATIOS); I915_WRITE(BLC_PWM_CTL, dev_priv->saveBLC_PWM_CTL); + I915_WRITE(BLC_HIST_CTL, dev_priv->saveBLC_HIST_CTL); I915_WRITE(PP_ON_DELAYS, dev_priv->savePP_ON_DELAYS); I915_WRITE(PP_OFF_DELAYS, dev_priv->savePP_OFF_DELAYS); I915_WRITE(PP_DIVISOR, dev_priv->savePP_DIVISOR); |