From b6fef0ef126eb3f32fedab8a8840d8b65848d675 Mon Sep 17 00:00:00 2001
From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri, 16 Jan 2015 18:07:25 +0000
Subject: [PATCH] drm/i915/skl: add turbo support
Per latest PM programming guide.
v2: the wrong flavour of the function updating the ring frequency was
called, leading to dead locks (Tvrtko)
v3: Add GEN6_RP_MEDIA_IS_GFX to RP_CONTROL (Imre, done by Damien)
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
[danvet: Fixup conflicts with Mika's forcewake refactor.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---
drivers/gpu/drm/i915/intel_pm.c | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index acfa362b042d..b221105dc907 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4024,7 +4024,35 @@ static void gen6_init_rps_frequencies(struct drm_device *dev)
}
}
+/* See the Gen9_GT_PM_Programming_Guide doc for the below */
static void gen9_enable_rps(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
+
+ I915_WRITE(GEN6_RPNSWREQ, 0xc800000);
+ I915_WRITE(GEN6_RC_VIDEO_FREQ, 0xc800000);
+
+ I915_WRITE(GEN6_RP_DOWN_TIMEOUT, 0xf4240);
+ I915_WRITE(GEN6_RP_INTERRUPT_LIMITS, 0x12060000);
+ I915_WRITE(GEN6_RP_UP_THRESHOLD, 0xe808);
+ I915_WRITE(GEN6_RP_DOWN_THRESHOLD, 0x3bd08);
+ I915_WRITE(GEN6_RP_UP_EI, 0x101d0);
+ I915_WRITE(GEN6_RP_DOWN_EI, 0x55730);
+ I915_WRITE(GEN6_RP_IDLE_HYSTERSIS, 0xa);
+ I915_WRITE(GEN6_PMINTRMSK, 0x6);
+ I915_WRITE(GEN6_RP_CONTROL, GEN6_RP_MEDIA_TURBO |
+ GEN6_RP_MEDIA_HW_MODE | GEN6_RP_MEDIA_IS_GFX |
+ GEN6_RP_ENABLE | GEN6_RP_UP_BUSY_AVG |
+ GEN6_RP_DOWN_IDLE_AVG);
+
+ gen6_enable_rps_interrupts(dev);
+
+ intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
+}
+
+static void gen9_enable_rc6(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_engine_cs *ring;
@@ -5574,7 +5602,9 @@ static void intel_gen6_powersave_work(struct work_struct *work)
} else if (IS_VALLEYVIEW(dev)) {
valleyview_enable_rps(dev);
} else if (INTEL_INFO(dev)->gen >= 9) {
+ gen9_enable_rc6(dev);
gen9_enable_rps(dev);
+ __gen6_update_ring_freq(dev);
} else if (IS_BROADWELL(dev)) {
gen8_enable_rps(dev);
__gen6_update_ring_freq(dev);
--
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