diff options
| author |  Imre Deak <imre.deak@intel.com>
| 2014-06-05 20:31:47 +0300 |
|---|---|---|
| committer |  Jani Nikula <jani.nikula@intel.com>
| 2014-06-23 10:02:03 +0300 |
| commit | bfafe93a1cd466ef318b7e5f6c65f59aee147791 (patch) | |
| tree | 35ba06381f0cb31c9ed37c0216c98b7e8d739677 /drivers/gpu/drm/i915/intel_drv.h | |
| parent | Linux 3.16-rc2 (diff) | |
| download | linux-bfafe93a1cd466ef318b7e5f6c65f59aee147791.tar.gz linux-bfafe93a1cd466ef318b7e5f6c65f59aee147791.tar.bz2 linux-bfafe93a1cd466ef318b7e5f6c65f59aee147791.zip | |
drm/i915: cache hw power well enabled state
Jesse noticed that the punit communication needed to query the VLV power
well status can cause substantial delays. Since we can query the state
frequently, for example during I2C transfers, maintain a cached version
of the HW state to get rid of this delay.
This fixes at least one reported regression where boot time increased by
~4 seconds due to frequent power well state queries on VLV during eDP
EDID read.
This regression has been introduced in
commit bb4932c4f17b68f34645ffbcf845e4c29d17290b
Author: Imre Deak <imre.deak@intel.com>
Date: Mon Apr 14 20:24:33 2014 +0300
drm/i915: vlv: check port power domain instead of only D0 for eDP VDD on
Reported-by: Jesse Barnes <jesse.barnes@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_drv.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h index bda0ae3d80cc..eaa27ee9e367 100644 --- a/drivers/gpu/drm/i915/intel_drv.h +++ b/drivers/gpu/drm/i915/intel_drv.h @@ -950,8 +950,8 @@ int intel_power_domains_init(struct drm_i915_private *); void intel_power_domains_remove(struct drm_i915_private *); bool intel_display_power_enabled(struct drm_i915_private *dev_priv, enum intel_display_power_domain domain); -bool intel_display_power_enabled_sw(struct drm_i915_private *dev_priv, - enum intel_display_power_domain domain); +bool intel_display_power_enabled_unlocked(struct drm_i915_private *dev_priv, + enum intel_display_power_domain domain); void intel_display_power_get(struct drm_i915_private *dev_priv, enum intel_display_power_domain domain); void intel_display_power_put(struct drm_i915_private *dev_priv, |