From patchwork Thu Nov 18 09:39:07 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Stanislav Lisovskiy X-Patchwork-Id: 12626393 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 29AE5C433EF for ; Thu, 18 Nov 2021 09:39:27 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E61FE613B1 for ; Thu, 18 Nov 2021 09:39:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E61FE613B1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4DA476E1D6; Thu, 18 Nov 2021 09:39:26 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8A67E6E914 for ; Thu, 18 Nov 2021 09:39:24 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10171"; a="232872588" X-IronPort-AV: E=Sophos;i="5.87,244,1631602800"; d="scan'208";a="232872588" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Nov 2021 01:39:22 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.87,244,1631602800"; d="scan'208";a="495306693" Received: from unknown (HELO slisovsk-Lenovo-ideapad-720S-13IKB.fi.intel.com) ([10.237.72.167]) by orsmga007.jf.intel.com with ESMTP; 18 Nov 2021 01:39:21 -0800 From: Stanislav Lisovskiy To: intel-gfx@lists.freedesktop.org Date: Thu, 18 Nov 2021 11:39:07 +0200 Message-Id: <20211118093907.18510-1-stanislav.lisovskiy@intel.com> X-Mailer: git-send-email 2.24.1.485.gad05a3d8e5 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH] drm/i915/dg2: Implement WM0 cursor WA for DG2 X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Bug in the register unit which results in WM1 register used when only WM0 is enabled on cursor. Software workaround is when only WM0 enabled on cursor, copy contents of CUR_WM_0[30:0] (exclude the enable bit) into CUR_WM_1[30:0]. v2: - s/dev_priv/i915/ (Ville Syrjälä) - Removed unneeded brackets (Ville Syrjälä) HSDES: 14012656716 Reviewed-by: Ville Syrjälä Signed-off-by: Stanislav Lisovskiy --- drivers/gpu/drm/i915/intel_pm.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 89dc7f69baf3..01fa3fac1b57 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5095,6 +5095,18 @@ skl_check_nv12_wm_level(struct skl_wm_level *wm, struct skl_wm_level *uv_wm, } } +static bool icl_need_wm1_wa(struct drm_i915_private *i915, + enum plane_id plane_id) +{ + /* + * Wa_1408961008:icl, ehl + * Wa_14012656716:tgl, adl + * Underruns with WM1+ disabled + */ + return DISPLAY_VER(i915) == 11 || + (IS_DISPLAY_VER(i915, 12, 13) && plane_id == PLANE_CURSOR); +} + static int skl_allocate_plane_ddb(struct intel_atomic_state *state, struct intel_crtc *crtc) @@ -5265,11 +5277,7 @@ skl_allocate_plane_ddb(struct intel_atomic_state *state, skl_check_nv12_wm_level(&wm->wm[level], &wm->uv_wm[level], total[plane_id], uv_total[plane_id]); - /* - * Wa_1408961008:icl, ehl - * Underruns with WM1+ disabled - */ - if (DISPLAY_VER(dev_priv) == 11 && + if (icl_need_wm1_wa(dev_priv, plane_id) && level == 1 && wm->wm[0].enable) { wm->wm[level].blocks = wm->wm[0].blocks; wm->wm[level].lines = wm->wm[0].lines;