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| author | Damien Lespiau <damien.lespiau@intel.com> | 2015-02-09 19:33:13 +0000 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2015-02-13 23:28:38 +0100 |
| commit | 77719d28aeed5cad45b61d66b198b2575a5bf4cc (patch) | |
| tree | 514f6fd158a0d1ac2ea5223d2352c9d8d243e7c2 /drivers/gpu/drm/i915/intel_pm.c | |
| parent | 183c6daceb7efa512ba93efd95766c59f175bbcf (diff) | |
| download | lwn-77719d28aeed5cad45b61d66b198b2575a5bf4cc.tar.gz lwn-77719d28aeed5cad45b61d66b198b2575a5bf4cc.zip | |
drm/i915/skl: Implement WaEnableLbsSlaRetryTimerDecrement
This W/A is put in a gen9 specific function because it may well be
needed on other gen9 platforms.
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Nick Hoath <nicholas.hoath@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 325f640c16c4..f68d12cb0246 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -52,10 +52,21 @@ #define INTEL_RC6p_ENABLE (1<<1) #define INTEL_RC6pp_ENABLE (1<<2) +static void gen9_init_clock_gating(struct drm_device *dev) +{ + struct drm_i915_private *dev_priv = dev->dev_private; + + /* WaEnableLbsSlaRetryTimerDecrement:skl */ + I915_WRITE(BDW_SCRATCH1, I915_READ(BDW_SCRATCH1) | + GEN9_LBS_SLA_RETRY_TIMER_DECREMENT_ENABLE); +} + static void skl_init_clock_gating(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; + gen9_init_clock_gating(dev); + if (INTEL_REVID(dev) == SKL_REVID_A0) { /* * WaDisableSDEUnitClockGating:skl |