drm/i915: Single thread force wake isn't used on HSW anymore
Kill the HSW check from the single thread force wake code. HSW
uses MT force wake exclusively these days.
The commit that removed HSW single thread forcewake support:
commit 36ec8f877481449bdfa072e6adf2060869e2b970
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu Oct 18 14:44:35 2012 +0200
drm/i915: unconditionally use mt forcewake on hsw/ivb
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2d4ec08..5479363 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4271,21 +4271,14 @@
static void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv)
{
- u32 forcewake_ack;
-
- if (IS_HASWELL(dev_priv->dev))
- forcewake_ack = FORCEWAKE_ACK_HSW;
- else
- forcewake_ack = FORCEWAKE_ACK;
-
- if (wait_for_atomic((I915_READ_NOTRACE(forcewake_ack) & 1) == 0,
+ if (wait_for_atomic((I915_READ_NOTRACE(FORCEWAKE_ACK) & 1) == 0,
FORCEWAKE_ACK_TIMEOUT_MS))
DRM_ERROR("Timed out waiting for forcewake old ack to clear.\n");
I915_WRITE_NOTRACE(FORCEWAKE, 1);
POSTING_READ(ECOBUS); /* something from same cacheline, but !FORCEWAKE */
- if (wait_for_atomic((I915_READ_NOTRACE(forcewake_ack) & 1),
+ if (wait_for_atomic((I915_READ_NOTRACE(FORCEWAKE_ACK) & 1),
FORCEWAKE_ACK_TIMEOUT_MS))
DRM_ERROR("Timed out waiting for forcewake to ack request.\n");