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drm/i915: vlv: check port power domain instead of only D0 for eDP VDD on

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Some platforms need additional power domains to be on in addition to the
device D0 state to access the panel registers.

Suggested by Daniel.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=76987
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Imre Deak 2014-04-14 20:24:33 +03:00 committed by Daniel Vetter
parent f301b1e116
commit bb4932c4f1
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/intel_dp.c
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@ -313,8 +313,12 @@ static bool edp_have_panel_vdd(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct intel_encoder *intel_encoder = &intel_dig_port->base;
enum intel_display_power_domain power_domain;
return !dev_priv->pm.suspended &&
power_domain = intel_display_port_power_domain(intel_encoder);
return intel_display_power_enabled(dev_priv, power_domain) &&
(I915_READ(_pp_ctrl_reg(intel_dp)) & EDP_FORCE_VDD) != 0;
}