From: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Date: Sat, 12 Sep 2015 04:47:54 +0000 (+0530)
Subject: drm/i915: Program GuC MAX IDLE Count
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=97c322e713b92b5071ad276f65cabf8a503a7408;p=linux-beck.git

drm/i915: Program GuC MAX IDLE Count

Cc: Alex Dai <yu.dai@intel.com>
Cc: Tom O'Rourke <Tom.O'Rourke@intel.com>
Cc: Akash Goel <akash.goel@intel.com>
Signed-off-by: Sagar Arun Kamble <sagar.a.kamble@intel.com>
Reviewed-by: Alex Dai <yu.dai@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

diff --git a/drivers/gpu/drm/i915/i915_guc_reg.h b/drivers/gpu/drm/i915/i915_guc_reg.h
index 8c8e574e63ba..9d79a6b7cc2f 100644
--- a/drivers/gpu/drm/i915/i915_guc_reg.h
+++ b/drivers/gpu/drm/i915/i915_guc_reg.h
@@ -53,6 +53,7 @@
 #define   START_DMA			  (1<<0)
 #define DMA_GUC_WOPCM_OFFSET		0xc340
 #define   GUC_WOPCM_OFFSET_VALUE	  0x80000	/* 512KB */
+#define GUC_MAX_IDLE_COUNT		0xC3E4
 
 #define GUC_WOPCM_SIZE			0xc050
 #define   GUC_WOPCM_SIZE_VALUE  	  (0x80 << 12)	/* 512KB */
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 61162b2e3fea..566f5cd85101 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4865,6 +4865,10 @@ static void gen9_enable_rc6(struct drm_device *dev)
 	I915_WRITE(GEN6_RC_IDLE_HYSTERSIS, 25); /* 25 * 1280ns */
 	for_each_ring(ring, dev_priv, unused)
 		I915_WRITE(RING_MAX_IDLE(ring->mmio_base), 10);
+
+	if (HAS_GUC_UCODE(dev))
+		I915_WRITE(GUC_MAX_IDLE_COUNT, 0xA);
+
 	I915_WRITE(GEN6_RC_SLEEP, 0);
 	I915_WRITE(GEN6_RC6_THRESHOLD, 37500); /* 37.5/125ms per EI */