From 18024199579882265653bfe9e2b1a3dcb5697cd9 Mon Sep 17 00:00:00 2001 From: Matt Roper 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 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 Cc: Patrik Jakobsson References: http://lists.freedesktop.org/archives/intel-gfx/2015-November/081037.html Signed-off-by: Matt Roper Link: http://patchwork.freedesktop.org/patch/msgid/1448990818-11005-1-git-send-email-matthew.d.roper@intel.com Reviewed-by: Imre Deak --- 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 3fa43af..ab833ef 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; } -- 2.7.4