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/1467297225-21379-45-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 bce44ec..8d25c45 100644 (file)
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -591,14 +591,20 @@ static void intel_psr_work(struct work_struct *work)
         * and be ready for re-enable.
         */
        if (HAS_DDI(dev_priv)) {
-               if (wait_for((I915_READ(EDP_PSR_STATUS_CTL) &
-                             EDP_PSR_STATUS_STATE_MASK) == 0, 50)) {
+               if (intel_wait_for_register(dev_priv,
+                                           EDP_PSR_STATUS_CTL,
+                                           EDP_PSR_STATUS_STATE_MASK,
+                                           0,
+                                           50)) {
                        DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n");
                        return;
                }
        } else {
-               if (wait_for((I915_READ(VLV_PSRSTAT(pipe)) &
-                             VLV_EDP_PSR_IN_TRANS) == 0, 1)) {
+               if (intel_wait_for_register(dev_priv,
+                                           VLV_PSRSTAT(pipe),
+                                           VLV_EDP_PSR_IN_TRANS,
+                                           0,
+                                           1)) {
                        DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n");
                        return;
                }