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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/1467297225-21379-50-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-06-30 15:33:33 +01:00
parent 2c2ccc3abc
commit 117c1148b4
1 changed files with 5 additions and 2 deletions
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7
drivers/gpu/drm/i915/intel_runtime_pm.c
View File

@ -703,8 +703,11 @@ static void skl_set_power_well(struct drm_i915_private *dev_priv,
switch (power_well->data) {
case SKL_DISP_PW_1:
if (wait_for((I915_READ(SKL_FUSE_STATUS) &
SKL_FUSE_PG0_DIST_STATUS), 1)) {
if (intel_wait_for_register(dev_priv,
SKL_FUSE_STATUS,
SKL_FUSE_PG0_DIST_STATUS,
SKL_FUSE_PG0_DIST_STATUS,
1)) {
DRM_ERROR("PG0 not enabled\n");
return;
}