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drm/i915: check the power domains in intel_lvds_get_hw_state()

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Just like we do for the other encoders. This should fix some WARNs
when running pm_rpm on SNB.

Testcase: igt/pm_rpm
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=80463
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2014-07-04 13:38:35 -03:00 committed by Daniel Vetter
parent 930e8c9e79
commit 34a6c70f09
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/intel_lvds.c
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@ -71,8 +71,13 @@ static bool intel_lvds_get_hw_state(struct intel_encoder *encoder,
struct drm_device *dev = encoder->base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_lvds_encoder *lvds_encoder = to_lvds_encoder(&encoder->base);
enum intel_display_power_domain power_domain;
u32 tmp;
power_domain = intel_display_port_power_domain(encoder);
if (!intel_display_power_enabled(dev_priv, power_domain))
return false;
tmp = I915_READ(lvds_encoder->reg);
if (!(tmp & LVDS_PORT_EN))