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Commit a767017f authored by Chris Wilson's avatar Chris Wilson
Browse files

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: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarTvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1467297225-21379-27-git-send-email-chris@chris-wilson.co.uk
parent 9036ff06

drivers/gpu/drm/i915/intel_dp.c

+4 −2
Original line number Diff line number Diff line
@@ -3322,7 +3322,9 @@ void intel_dp_set_idle_link_train(struct intel_dp *intel_dp) 
	if (port == PORT_A)

		return;



	if (wait_for((I915_READ(DP_TP_STATUS(port)) & DP_TP_STATUS_IDLE_DONE),

	if (intel_wait_for_register(dev_priv,DP_TP_STATUS(port),

				    DP_TP_STATUS_IDLE_DONE,

				    DP_TP_STATUS_IDLE_DONE,

				    1))

		DRM_ERROR("Timed out waiting for DP idle patterns\n");

}