diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2014-09-04 14:53:14 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-09-04 14:47:48 +0200 |
| commit | e39b999a6f229386ea6c58cb1c10ce9dc912869b (patch) | |
| tree | 5c2b3be1a2901a7817f69be2591d244103ac5538 /drivers/gpu/drm/i915/intel_display.c | |
| parent | 95468892fdfeef6d1004b524e35957629efdbe00 (diff) | |
drm/i915: Fix edp vdd locking
Introduce a new mutex (pps_mutex) to protect the power sequencer
state. For now this state includes want_panel_vdd as well as the
power sequencer registers.
We need a single mutex (as opposed to per port) because later on we
will need to deal with VLV/CHV which have multiple power sequencer
which can be reassigned to different ports.
v2: Add the locking to intel_dp_encoder_suspend too (Imre)
v3: Take care intel_edp_backlight_power() and
_intel_edp_backlight_on/off(), deal with reboot notifier
vlv_power_sequencer_pipe() call (Imre)
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_display.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index e245505c867f..2f47978fe808 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -12559,6 +12559,8 @@ static void intel_init_display(struct drm_device *dev) } intel_panel_init_backlight_funcs(dev); + + mutex_init(&dev_priv->pps_mutex); } /* |