From ab37c4d712c8b35c0c1e3237e04fe49f717055a4 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 10 Sep 2019 17:16:57 +0100
Subject: drm/i915/tgl: Disable rc6 for debugging
Empirical evidence from CI tells us that our rc6 setup for Tigerlake is
off. Disable rc6 on tgl temporary so that we gain CI coverage as we
prepare a fix. It also appears that the BIOS on our tgl leaves rc6
enabled, so we have to explicitly disable it on init.
References: https://bugs.freedesktop.org/show_bug.cgi?id=111593
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Acked-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190910161657.23037-1-chris@chris-wilson.co.uk
---
drivers/gpu/drm/i915/i915_pci.c | 1 +
drivers/gpu/drm/i915/intel_pm.c | 3 +--
2 files changed, 2 insertions(+), 2 deletions(-)
(limited to 'drivers')
diff --git a/drivers/gpu/drm/i915/i915_pci.c b/drivers/gpu/drm/i915/i915_pci.c
index fbe98a2db88e..b3cc8560696b 100644
--- a/drivers/gpu/drm/i915/i915_pci.c
+++ b/drivers/gpu/drm/i915/i915_pci.c
@@ -797,6 +797,7 @@ static const struct intel_device_info intel_tigerlake_12_info = {
.display.has_modular_fia = 1,
.engine_mask =
BIT(RCS0) | BIT(BCS0) | BIT(VECS0) | BIT(VCS0) | BIT(VCS2),
+ .has_rc6 = false, /* XXX disabled for debugging */
};
#undef GEN
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 528e90ed5de4..54a8b7705bc6 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -8671,8 +8671,7 @@ void intel_disable_gt_powersave(struct drm_i915_private *dev_priv)
{
mutex_lock(&dev_priv->gt_pm.rps.lock);
- if (HAS_RC6(dev_priv))
- intel_disable_rc6(dev_priv);
+ intel_disable_rc6(dev_priv);
intel_disable_rps(dev_priv);
if (HAS_LLC(dev_priv))
--
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