From: Ville Syrjälä Date: Thu, 27 Feb 2014 19:59:01 +0000 (+0200) Subject: drm/i915: Disable semaphore wait event idle message on BDW X-Git-Tag: firefly_0821_release~176^2~3773^2~63^2~269 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=295e8bb73a4785b65db6655fbf6ad57c4177b551;p=firefly-linux-kernel-4.4.55.git drm/i915: Disable semaphore wait event idle message on BDW According to BSpec we need to always set this magic bit in ring buffer mode. Signed-off-by: Ville Syrjälä Reviewed-by: Mika Kuoppala Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index aa8390978e63..d11a9ea5884d 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -949,6 +949,9 @@ #define GEN6_BLITTER_LOCK_SHIFT 16 #define GEN6_BLITTER_FBC_NOTIFY (1<<3) +#define GEN6_RC_SLEEP_PSMI_CONTROL 0x2050 +#define GEN8_RC_SEMA_IDLE_MSG_DISABLE (1 << 12) + #define GEN6_BSD_SLEEP_PSMI_CONTROL 0x12050 #define GEN6_BSD_SLEEP_MSG_DISABLE (1 << 0) #define GEN6_BSD_SLEEP_FLUSH_DISABLE (1 << 2) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index bb2ca355c1b0..739eabc814e9 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -4867,6 +4867,9 @@ static void gen8_init_clock_gating(struct drm_device *dev) */ I915_WRITE(GEN7_GT_MODE, GEN6_WIZ_HASHING_MASK | GEN6_WIZ_HASHING_16x4); + + I915_WRITE(GEN6_RC_SLEEP_PSMI_CONTROL, + _MASKED_BIT_ENABLE(GEN8_RC_SEMA_IDLE_MSG_DISABLE)); } static void haswell_init_clock_gating(struct drm_device *dev)