From 5b88abacd4820c66bc347a6beeb3d6ad1144544b Mon Sep 17 00:00:00 2001 From: Arun Siluvery Date: Tue, 8 Sep 2015 10:31:49 +0100 Subject: [PATCH] drm/i915/bxt: Add WaSetClckGatingDisableMedia Signed-off-by: Arun Siluvery Reviewed-by: Sagar Arun Kamble Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_reg.h | 1 + drivers/gpu/drm/i915/intel_pm.c | 6 ++++++ 2 files changed, 7 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 65b5682b19ac..495ac17b04c7 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -6897,6 +6897,7 @@ enum skl_disp_power_wells { #define GEN7_DOP_CLOCK_GATE_ENABLE (1<<0) #define GEN8_DOP_CLOCK_GATE_CFCLK_ENABLE (1<<2) #define GEN8_DOP_CLOCK_GATE_GUC_ENABLE (1<<4) +#define GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE (1<<6) #define GEN8_GARBCNTL 0xB004 #define GEN9_GAPS_TSV_CREDIT_DISABLE (1<<7) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 64bc77ef6b2e..920872acf4db 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -134,6 +134,12 @@ static void bxt_init_clock_gating(struct drm_device *dev) */ I915_WRITE(TILECTL, I915_READ(TILECTL) | TILECTL_TLBPF); } + + /* WaSetClckGatingDisableMedia:bxt */ + if (INTEL_REVID(dev) == BXT_REVID_A0) { + I915_WRITE(GEN7_MISCCPCTL, (I915_READ(GEN7_MISCCPCTL) & + ~GEN8_DOP_CLOCK_GATE_MEDIA_ENABLE)); + } } static void i915_pineview_get_mem_freq(struct drm_device *dev)