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drm/i915: Convert wait_for(I915_READ(reg)) to intel_wait_for_register()

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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/1467297225-21379-5-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-06-30 15:32:48 +01:00
parent b273669588
commit 41ce405e68
1 changed files with 4 additions and 4 deletions
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8
drivers/gpu/drm/i915/i915_drv.c
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@ -2588,8 +2588,7 @@ static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
mask = VLV_GTLC_PW_MEDIA_STATUS_MASK | VLV_GTLC_PW_RENDER_STATUS_MASK;
val = wait_for_on ? mask : 0;
#define COND ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
if (COND)
if ((I915_READ(VLV_GTLC_PW_STATUS) & mask) == val)
return 0;
DRM_DEBUG_KMS("waiting for GT wells to go %s (%08x)\n",
@ -2600,13 +2599,14 @@ static int vlv_wait_for_gt_wells(struct drm_i915_private *dev_priv,
* RC6 transitioning can be delayed up to 2 msec (see
* valleyview_enable_rps), use 3 msec for safety.
*/
err = wait_for(COND, 3);
err = intel_wait_for_register(dev_priv,
VLV_GTLC_PW_STATUS, mask, val,
3);
if (err)
DRM_ERROR("timeout waiting for GT wells to go %s\n",
onoff(wait_for_on));
return err;
#undef COND
}
static void vlv_check_no_gt_access(struct drm_i915_private *dev_priv)