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/1467297225-21379-25-git-send-email-chris@chris-wilson.co.uk

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 5fa37aaf7e513d815d41ae29d9ce982da4b162e3..30c181a72202272a3bfec2c0ed929a4e366bdcad 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -9633,7 +9633,9 @@ static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
        val &= ~LCPLL_PLL_DISABLE;
        I915_WRITE(LCPLL_CTL, val);
 
-       if (wait_for(I915_READ(LCPLL_CTL) & LCPLL_PLL_LOCK, 5))
+       if (intel_wait_for_register(dev_priv,
+                                   LCPLL_CTL, LCPLL_PLL_LOCK, LCPLL_PLL_LOCK,
+                                   5))
                DRM_ERROR("LCPLL not locked yet\n");
 
        if (val & LCPLL_CD_SOURCE_FCLK) {