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Commit d86ba628 authored by Kumar, Mahesh's avatar Kumar, Mahesh Committed by Maarten Lankhorst
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drm/i915/cnl: Extend WM workaround with IPC for CNL 



CNL:A & CNL:B have same workaround as KBL to increase wm level latency
by 4us if IPC is enabled.

Signed-off-by: default avatarMahesh Kumar <mahesh1.kumar@intel.com>
Reviewed-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: default avatarMaarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170817134529.2839-6-mahesh1.kumar@intel.com
parent 446e850c

drivers/gpu/drm/i915/intel_pm.c

+2 −1
Original line number Diff line number Diff line
@@ -4492,7 +4492,8 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv, 
	}



	/* Display WA #1141: kbl,cfl */

	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) &&

	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv) ||

	    IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_B0)) &&

	    dev_priv->ipc_enabled)

		latency += 4;