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| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2016-06-07 17:19:01 +0300 |
|---|---|---|
| committer | Mika Kuoppala <mika.kuoppala@intel.com> | 2016-07-15 15:51:24 +0300 |
| commit | 9146f308d5916e20c53afe3ee0bd4dbd562a0ef9 (patch) | |
| tree | 5f1d4c4989b73f0a4e5e775876399cfdc6255e0f | |
| parent | 3d042d4633d7b180e08abead7bd7de0bb194b256 (diff) | |
| download | linux-stable-9146f308d5916e20c53afe3ee0bd4dbd562a0ef9.tar.gz linux-stable-9146f308d5916e20c53afe3ee0bd4dbd562a0ef9.tar.bz2 linux-stable-9146f308d5916e20c53afe3ee0bd4dbd562a0ef9.zip | |
drm/i915/kbl: Add WaDisableSDEUnitClockGating
Add this workaround until upto kbl revid B0.
References: HSD#1802092
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-10-git-send-email-mika.kuoppala@intel.com
(cherry picked from commit 9498dba7b4ffe40a1e2b23d7718b77e49841248f)
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 362597580c05..bff740ccb479 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -6702,11 +6702,25 @@ static void lpt_suspend_hw(struct drm_device *dev) } } +static void kabylake_init_clock_gating(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + /* See Bspec note for PSR2_CTL bit 31, Wa#828:kbl */ + I915_WRITE(CHICKEN_PAR1_1, + I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP); + + /* WaDisableSDEUnitClockGating:kbl */ + if (IS_KBL_REVID(dev_priv, 0, KBL_REVID_B0)) + I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | + GEN8_SDEUNIT_CLOCK_GATE_DISABLE); +} + static void skylake_init_clock_gating(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; - /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl,kbl */ + /* See Bspec note for PSR2_CTL bit 31, Wa#828:skl */ I915_WRITE(CHICKEN_PAR1_1, I915_READ(CHICKEN_PAR1_1) | SKL_EDP_PSR_FIX_RDWRAP); } @@ -7178,7 +7192,7 @@ void intel_init_clock_gating_hooks(struct drm_i915_private *dev_priv) if (IS_SKYLAKE(dev_priv)) dev_priv->display.init_clock_gating = skylake_init_clock_gating; else if (IS_KABYLAKE(dev_priv)) - dev_priv->display.init_clock_gating = skylake_init_clock_gating; + dev_priv->display.init_clock_gating = kabylake_init_clock_gating; else if (IS_BROXTON(dev_priv)) dev_priv->display.init_clock_gating = bxt_init_clock_gating; else if (IS_BROADWELL(dev_priv)) |