From d86ba628ce4bfd83c987e4dab9d917cbb3622854 Mon Sep 17 00:00:00 2001 From: "Kumar, Mahesh" Date: Thu, 17 Aug 2017 19:15:26 +0530 Subject: [PATCH] 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: Mahesh Kumar Reviewed-by: Maarten Lankhorst Signed-off-by: Maarten Lankhorst Link: https://patchwork.freedesktop.org/patch/msgid/20170817134529.2839-6-mahesh1.kumar@intel.com --- drivers/gpu/drm/i915/intel_pm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 629ad54e2797..f2911de69ea9 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -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; -- 2.34.1