drm/i915: Apply the force-detect VGA w/a to Valleyview

It appears that Valleyview shares its VGA encoder with more recent
siblings and requires the same forced detection cycle after a hardware
reset before we can rely on hotplugging.

Reported-and-tested-by: kobeqin <kobe.qin@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=67733
Tested-by: kobeqin <kobe.qin@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
[danvet: Check for gen >= 5 insted, acked by Chris.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index b5a3875f22c7cb5d18550b6be3b1c4b48b527274..ea9022ef15d5bdffc40e5c0bf9a941c7f0b38677 100644 (file)
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -688,7 +688,7 @@ static void intel_crt_reset(struct drm_connector *connector)
        struct drm_i915_private *dev_priv = dev->dev_private;
        struct intel_crt *crt = intel_attached_crt(connector);
 
-       if (HAS_PCH_SPLIT(dev)) {
+       if (INTEL_INFO(dev)->gen >= 5) {
                u32 adpa;
 
                adpa = I915_READ(crt->adpa_reg);