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/1467297225-21379-43-git-send-email-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 29a09bf..d299a3d 100644 (file)
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -501,8 +501,11 @@ static void vlv_psr_disable(struct intel_dp *intel_dp)
 
        if (dev_priv->psr.active) {
                /* Put VLV PSR back to PSR_state 0 that is PSR Disabled. */
-               if (wait_for((I915_READ(VLV_PSRSTAT(intel_crtc->pipe)) &
-                             VLV_EDP_PSR_IN_TRANS) == 0, 1))
+               if (intel_wait_for_register(dev_priv,
+                                           VLV_PSRSTAT(intel_crtc->pipe),
+                                           VLV_EDP_PSR_IN_TRANS,
+                                           0,
+                                           1))
                        WARN(1, "PSR transition took longer than expected\n");
 
                val = I915_READ(VLV_PSRCTL(intel_crtc->pipe));