From: Damien Lespiau Date: Wed, 26 Mar 2014 18:18:01 +0000 (+0000) Subject: drm/i915/skl: Implement WaDisableDgMirrorFixInHalfSliceChicken5:skl X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3ca5da43003a5bd0ef1d4c15d015c77411e0df0d;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git drm/i915/skl: Implement WaDisableDgMirrorFixInHalfSliceChicken5:skl Reviewed-by: Rodrigo Vivi Signed-off-by: Damien Lespiau Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 5060b51749b4..c5c3ee343218 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -5866,6 +5866,9 @@ enum punit_power_well { #define GEN7_SINGLE_SUBSCAN_DISPATCH_ENABLE (1<<10) #define GEN7_PSD_SINGLE_PORT_DISPATCH_ENABLE (1<<3) +#define GEN9_HALF_SLICE_CHICKEN5 0xe188 +#define GEN9_DG_MIRROR_FIX_ENABLE (1<<5) + #define GEN8_ROW_CHICKEN 0xe4f0 #define PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE (1<<8) #define STALL_DOP_GATING_DISABLE (1<<5) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 64eb3b82b466..4f5dcf545c89 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -77,6 +77,14 @@ static void gen9_init_clock_gating(struct drm_device *dev) I915_WRITE(GEN8_UCGCTL6, I915_READ(GEN8_UCGCTL6) | GEN8_SDEUNIT_CLOCK_GATE_DISABLE); + /* + * WaDisableDgMirrorFixInHalfSliceChicken5:skl + * This is a pre-production w/a. + */ + I915_WRITE(GEN9_HALF_SLICE_CHICKEN5, + I915_READ(GEN9_HALF_SLICE_CHICKEN5) & + ~GEN9_DG_MIRROR_FIX_ENABLE); + /* Wa4x4STCOptimizationDisable:skl */ I915_WRITE(CACHE_MODE_1, _MASKED_BIT_ENABLE(GEN8_4x4_STC_OPTIMIZATION_DISABLE));