[Intel-gfx] [PATCH 3/4] drm/i915: drop register special-casing in forcewake

[Daniel Vetter]

We currently have 3 register for which we must not grab forcewake for:
FORCEWAKE, FROCEWAKE_MT and ECOBUS.
- FROCEWAKE is excluded in the NEEDS_FORCE_WAKE macro and accessed
  with _NOTRACE.
- FROCEWAKE_MT is just accessed with _NOTRACE.
- ECOBUS is only excluded in the macro.

In fear of an ever-growing list of special cases and to cut down the
confusion, just access all of them with the _NOTRACE variants.

Also kill the duplicate definition of the macro, which is unused.

Signed-Off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/i915/i915_drv.c      |    4 +---
 drivers/gpu/drm/i915/i915_drv.h      |    7 -------
 drivers/gpu/drm/i915/intel_display.c |    2 +-
 3 files changed, 2 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index ac3ad22..653b6f2 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -931,9 +931,7 @@ MODULE_LICENSE("GPL and additional rights");
 /* We give fast paths for the really cool registers */
 #define NEEDS_FORCE_WAKE(dev_priv, reg) \
 	(((dev_priv)->info->gen >= 6) && \
-	 ((reg) < 0x40000) &&		 \
-	 ((reg) != FORCEWAKE) &&	 \
-	 ((reg) != ECOBUS))
+	 ((reg) < 0x40000))		 \
 
 #define __i915_read(x, y) \
 u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg) { \
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 9e6ccc2..4ee4626 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1356,13 +1356,6 @@ void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv);
 void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv);
 void __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv);
 
-/* We give fast paths for the really cool registers */
-#define NEEDS_FORCE_WAKE(dev_priv, reg) \
-	(((dev_priv)->info->gen >= 6) && \
-	 ((reg) < 0x40000) &&		 \
-	 ((reg) != FORCEWAKE) &&	 \
-	 ((reg) != ECOBUS))
-
 #define __i915_read(x, y) \
 	u##x i915_read##x(struct drm_i915_private *dev_priv, u32 reg);
 
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 633c693..70436c7 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8500,7 +8500,7 @@ static void intel_init_display(struct drm_device *dev)
 
 			mutex_lock(&dev->struct_mutex);
 			__gen6_gt_force_wake_mt_get(dev_priv);
-			ecobus = I915_READ(ECOBUS);
+			ecobus = I915_READ_NOTRACE(ECOBUS);
 			__gen6_gt_force_wake_mt_put(dev_priv);
 			mutex_unlock(&dev->struct_mutex);
 
-- 
1.7.7.3