From 18024199579882265653bfe9e2b1a3dcb5697cd9 Mon Sep 17 00:00:00 2001
From: Matt Roper <matthew.d.roper@intel.com>
Date: Tue, 1 Dec 2015 09:26:58 -0800
Subject: [PATCH] drm/i915/bxt: Disable power well support
BXT power well support is not yet stable. Starting with patch
commit 9f836f9016ad5320e0c9230419d2102cf15a28aa
Author: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
Date: Mon Nov 16 16:20:01 2015 +0100
drm/i915/gen9: Turn DC handling into a power well
DPMS off operations may actually cause the entire system to powerdown or
reboot. Disable power well support for now until Broxton gets fixes
similar to what we have for SKL.
Cc: Imre Deak <imre.deak@intel.com>
Cc: Patrik Jakobsson <patrik.jakobsson@linux.intel.com>
References: http://lists.freedesktop.org/archives/intel-gfx/2015-November/081037.html
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1448990818-11005-1-git-send-email-matthew.d.roper@intel.com
Reviewed-by: Imre Deak <imre.deak@intel.com>
---
drivers/gpu/drm/i915/intel_runtime_pm.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_runtime_pm.c b/drivers/gpu/drm/i915/intel_runtime_pm.c
index 3fa43af949465..ab833efb5f0c7 100644
--- a/drivers/gpu/drm/i915/intel_runtime_pm.c
+++ b/drivers/gpu/drm/i915/intel_runtime_pm.c
@@ -1911,6 +1911,11 @@ sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv,
if (disable_power_well >= 0)
return !!disable_power_well;
+ if (IS_BROXTON(dev_priv)) {
+ DRM_DEBUG_KMS("Disabling display power well support\n");
+ return 0;
+ }
+
return 1;
}
--
2.30.2