drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()
authorChris Wilson <chris@chris-wilson.co.uk>
Thu, 30 Jun 2016 14:33:13 +0000 (15:33 +0100)
committerChris Wilson <chris@chris-wilson.co.uk>
Thu, 30 Jun 2016 14:42:16 +0000 (15:42 +0100)
By using the out-of-line intel_wait_for_register() not only do we can
efficiency from using the hybrid wait_for() contained within, but we
avoid code bloat from the numerous inlined loops, in total (all patches):

   text    data     bss     dec     hex filename
1078551    4557     416 1083524  108884 drivers/gpu/drm/i915/i915.ko
1070775    4557     416 1075748  106a24 drivers/gpu/drm/i915/i915.ko

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1467297225-21379-30-git-send-email-chris@chris-wilson.co.uk
drivers/gpu/drm/i915/intel_dsi.c

index 63b7200..146d832 100644 (file)
@@ -90,7 +90,9 @@ static void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi, enum port port)
        mask = LP_CTRL_FIFO_EMPTY | HS_CTRL_FIFO_EMPTY |
                LP_DATA_FIFO_EMPTY | HS_DATA_FIFO_EMPTY;
 
-       if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & mask) == mask, 100))
+       if (intel_wait_for_register(dev_priv,
+                                   MIPI_GEN_FIFO_STAT(port), mask, mask,
+                                   100))
                DRM_ERROR("DPI FIFOs are not empty\n");
 }