drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()

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/1467297225-21379-35-git-send-email-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index a28dc18..448741d 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -679,8 +679,9 @@ static void intel_dsi_clear_device_ready(struct intel_encoder *encoder)
                /* Wait till Clock lanes are in LP-00 state for MIPI Port A
                 * only. MIPI Port C has no similar bit for checking
                 */
-               if (wait_for(((I915_READ(port_ctrl) & AFE_LATCHOUT)
-                                               == 0x00000), 30))
+               if (intel_wait_for_register(dev_priv,
+                                           port_ctrl, AFE_LATCHOUT, 0,
+                                           30))
                        DRM_ERROR("DSI LP not going Low\n");
 
                /* Disable MIPI PHY transparent latch */