diff options
| author | Mika Kuoppala <mika.kuoppala@linux.intel.com> | 2016-06-07 17:19:16 +0300 |
|---|---|---|
| committer | Mika Kuoppala <mika.kuoppala@intel.com> | 2016-06-08 16:26:48 +0300 |
| commit | 0f78dee6f06a9399d4bdf79575094cc761b872ac (patch) | |
| tree | e6b7a139f6c9f9028aef0888a5ec952d4f3f6c80 | |
| parent | 066d462888514af727008a450f4078b1a23d5cbe (diff) | |
drm/i915/gen9: Add WaFbcTurnOffFbcWatermark
According to bspec this prevents screen corruption when fbc is
used.
v2: This workaround has a name, use it (Ville)
v3: remove bogus gen check on ilk/vlv wm path (Ville)
References: HSD#2135555, HSD#2137270, BSID#562
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1465309159-30531-25-git-send-email-mika.kuoppala@intel.com
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index d766d1a562df..de3dd241e151 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -69,6 +69,10 @@ static void gen9_init_clock_gating(struct drm_device *dev) /* WaEnableChickenDCPR:skl,bxt,kbl */ I915_WRITE(GEN8_CHICKEN_DCPR_1, I915_READ(GEN8_CHICKEN_DCPR_1) | MASK_WAKEMEM); + + /* WaFbcTurnOffFbcWatermark:skl,bxt,kbl */ + I915_WRITE(DISP_ARB_CTL, + I915_READ(DISP_ARB_CTL) | DISP_FBC_WM_DIS); } static void bxt_init_clock_gating(struct drm_device *dev) |