[Intel-gfx] [PATCH v2 5/9] drm/i915: Disable CRT hotplug detection for valleyview

[Vijay Purushothaman]

Temporary work around to avoid spurious crt hotplug interrupts.

Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman at intel.com>
Signed-off-by: Gajanan Bhat <gajanan.bhat at intel.com>
---
 drivers/gpu/drm/i915/intel_crt.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c
index c42b980..5f30364 100644
--- a/drivers/gpu/drm/i915/intel_crt.c
+++ b/drivers/gpu/drm/i915/intel_crt.c
@@ -308,6 +308,13 @@ static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
 	bool ret;
 	u32 save_adpa;
 
+	/*
+	 * Disable crt detect hotplug for VLV X0. Spurious hot plug
+	 * detect calls crashses the X0 system
+	 */
+	if (IS_VALLEYVIEW(dev))
+		return false;
+
 	save_adpa = adpa = I915_READ(ADPA);
 	DRM_DEBUG_KMS("trigger hotplug detect cycle: adpa=0x%x\n", adpa);
 
-- 
1.7.9.5