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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/1467297225-21379-15-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-06-30 15:32:58 +01:00
parent 650fbd8481
commit d9f96244b8
1 changed files with 5 additions and 1 deletions
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6
drivers/gpu/drm/i915/intel_display.c
View File

@ -1910,7 +1910,11 @@ static void lpt_enable_pch_transcoder(struct drm_i915_private *dev_priv,
val |= TRANS_PROGRESSIVE;
I915_WRITE(LPT_TRANSCONF, val);
if (wait_for(I915_READ(LPT_TRANSCONF) & TRANS_STATE_ENABLE, 100))
if (intel_wait_for_register(dev_priv,
LPT_TRANSCONF,
TRANS_STATE_ENABLE,
TRANS_STATE_ENABLE,
100))
DRM_ERROR("Failed to enable PCH transcoder\n");
}