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| author | Paulo Zanoni <paulo.r.zanoni@intel.com> | 2013-03-06 20:03:20 -0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-03-17 21:53:10 +0100 |
| commit | 4deb88a6996268f44b91015779cfea81fd9fd8dd (patch) | |
| tree | ed8268de156f0953a4da558a43164d40e4da7c8c /drivers/gpu/drm/i915/i915_suspend.c | |
| parent | 311e359c0bcbcfa6d71a56407477f2ec9c28c2d5 (diff) | |
| download | linux-4deb88a6996268f44b91015779cfea81fd9fd8dd.tar.bz2 | |
drm/i915: don't save/restore PCH_LVDS on LPT
Because the register does not exist on LPT. The interesting fact is
that reading/writing PCH_LVDS on LPT does *not* give us "unclaimed
register" messages, but the register value is always 0.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_suspend.c')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_suspend.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c index c1e02b040a34..41f0fdecfbdc 100644 --- a/drivers/gpu/drm/i915/i915_suspend.c +++ b/drivers/gpu/drm/i915/i915_suspend.c @@ -209,7 +209,8 @@ static void i915_save_display(struct drm_device *dev) dev_priv->regfile.saveBLC_PWM_CTL2 = I915_READ(BLC_PWM_PCH_CTL2); dev_priv->regfile.saveBLC_CPU_PWM_CTL = I915_READ(BLC_PWM_CPU_CTL); dev_priv->regfile.saveBLC_CPU_PWM_CTL2 = I915_READ(BLC_PWM_CPU_CTL2); - dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS); + if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) + dev_priv->regfile.saveLVDS = I915_READ(PCH_LVDS); } else { dev_priv->regfile.savePP_CONTROL = I915_READ(PP_CONTROL); dev_priv->regfile.savePFIT_PGM_RATIOS = I915_READ(PFIT_PGM_RATIOS); @@ -271,9 +272,9 @@ static void i915_restore_display(struct drm_device *dev) if (drm_core_check_feature(dev, DRIVER_MODESET)) mask = ~LVDS_PORT_EN; - if (HAS_PCH_SPLIT(dev)) { + if (HAS_PCH_IBX(dev) || HAS_PCH_CPT(dev)) I915_WRITE(PCH_LVDS, dev_priv->regfile.saveLVDS & mask); - } else if (IS_MOBILE(dev) && !IS_I830(dev)) + else if (INTEL_INFO(dev)->gen <= 4 && IS_MOBILE(dev) && !IS_I830(dev)) I915_WRITE(LVDS, dev_priv->regfile.saveLVDS & mask); if (!IS_I830(dev) && !IS_845G(dev) && !HAS_PCH_SPLIT(dev)) |