From patchwork Fri Feb 28 20:35:52 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?VmlsbGUgU3lyasOkbMOk?= X-Patchwork-Id: 11413251 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1368114B7 for ; Fri, 28 Feb 2020 20:36:08 +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 F084A246A2 for ; Fri, 28 Feb 2020 20:36:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F084A246A2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 6700A6F4C9; Fri, 28 Feb 2020 20:36:07 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id A214F6F4CC for ; Fri, 28 Feb 2020 20:36:04 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Feb 2020 12:36:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,497,1574150400"; d="scan'208";a="318225067" Received: from stinkbox.fi.intel.com (HELO stinkbox) ([10.237.72.174]) by orsmga001.jf.intel.com with SMTP; 28 Feb 2020 12:36:01 -0800 Received: by stinkbox (sSMTP sendmail emulation); Fri, 28 Feb 2020 22:36:01 +0200 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Date: Fri, 28 Feb 2020 22:35:52 +0200 Message-Id: <20200228203552.30273-4-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200228203552.30273-1-ville.syrjala@linux.intel.com> References: <20200228203552.30273-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH 4/4] drm/i915: Implement display w/a 1140 for glk/cnl 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" From: Ville Syrjälä Display w/a #1140 tells us we have to program the transition watermark to the minimum value on glk/cnl. Let's do that. Signed-off-by: Ville Syrjälä Reviewed-by: Rodrigo Vivi --- drivers/gpu/drm/i915/intel_pm.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index f7c11b9f2c29..04013af1eaf1 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -5116,8 +5116,7 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, { struct drm_device *dev = crtc_state->uapi.crtc->dev; const struct drm_i915_private *dev_priv = to_i915(dev); - u16 trans_min, trans_y_tile_min; - const u16 trans_amount = 10; /* This is configurable amount */ + u16 trans_min, trans_amount, trans_y_tile_min; u16 wm0_sel_res_b, trans_offset_b, res_blocks; /* Transition WM don't make any sense if ipc is disabled */ @@ -5131,9 +5130,16 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, if (IS_GEN9_BC(dev_priv) || IS_BROXTON(dev_priv)) return; - trans_min = 14; if (INTEL_GEN(dev_priv) >= 11) trans_min = 4; + else + trans_min = 14; + + /* Display WA #1140: glk,cnl */ + if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)) + trans_amount = 0; + else + trans_amount = 10; /* This is configurable amount */ trans_offset_b = trans_min + trans_amount; @@ -5160,7 +5166,6 @@ static void skl_compute_transition_wm(const struct intel_crtc_state *crtc_state, /* WA BUG:1938466 add one block for non y-tile planes */ if (IS_CNL_REVID(dev_priv, CNL_REVID_A0, CNL_REVID_A0)) res_blocks += 1; - } /*