From patchwork Thu Sep 30 00:14:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Souza, Jose" X-Patchwork-Id: 12527015 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 7D711C433FE for ; Thu, 30 Sep 2021 00:08:56 +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 45B58611C0 for ; Thu, 30 Sep 2021 00:08:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 45B58611C0 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 7ED6B6EB0B; Thu, 30 Sep 2021 00:08:49 +0000 (UTC) Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id 33A816EB0D for ; Thu, 30 Sep 2021 00:08:46 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10122"; a="212148101" X-IronPort-AV: E=Sophos;i="5.85,334,1624345200"; d="scan'208";a="212148101" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Sep 2021 17:08:30 -0700 X-IronPort-AV: E=Sophos;i="5.85,334,1624345200"; d="scan'208";a="438658505" Received: from josouza-mobl2.jf.intel.com (HELO josouza-mobl2.intel.com) ([10.24.14.60]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Sep 2021 17:08:30 -0700 From: =?utf-8?q?Jos=C3=A9_Roberto_de_Souza?= To: intel-gfx@lists.freedesktop.org Cc: Gwan-gyeong Mun , =?utf-8?q?Jos=C3=A9_Roberto?= =?utf-8?q?_de_Souza?= Date: Wed, 29 Sep 2021 17:14:06 -0700 Message-Id: <20210930001409.254817-6-jose.souza@intel.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210930001409.254817-1-jose.souza@intel.com> References: <20210930001409.254817-1-jose.souza@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 6/9] drm/i915/display/adlp: Optimize PSR2 power-savings in corner cases 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" The Wa_14014971508 is required to fix scanout when a feature that i915 do not support is enabled and this feature is not planned to be enabled for adlp. Keeping this workaround enabled can badly hurt power-savings when a full frame fetch is required(see psr2_sel_fetch_plane_state_supported() and psr2_sel_fetch_pipe_state_supported()). Here a example that could badly hurt power-savings, userspace does a page flip to a rotated plane, so CONTINUOS_FULL_FRAME set. But then for a whole 30 seconds nothing in the screen requires updates but because CONTINUOS_FULL_FRAME is set, it will not go into DC5/DC6. Reverting Wa_14014971508 fixes that, as only a single frame will be sent and then display can go to DC5/DC6 for those 30 seconds of idleness. BSpec: 54369 Cc: Gwan-gyeong Mun Signed-off-by: José Roberto de Souza Reviewed-by: Gwan-gyeong Mun --- drivers/gpu/drm/i915/display/intel_psr.c | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c index e8af39591dfea..b37f123fe0c97 100644 --- a/drivers/gpu/drm/i915/display/intel_psr.c +++ b/drivers/gpu/drm/i915/display/intel_psr.c @@ -1499,15 +1499,10 @@ static void psr2_man_trk_ctl_calc(struct intel_crtc_state *crtc_state, if (full_update) { /* - * Wa_14014971508:adlp - * SINGLE_FULL_FRAME bit is not hold in register so can not be - * restored by DMC, so using CONTINUOS_FULL_FRAME to mimic that + * Not applying Wa_14014971508:adlp as we do not support the + * feature that requires this workaround. */ - if (IS_ALDERLAKE_P(dev_priv)) - val |= ADLP_PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME; - else - val |= PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME; - + val |= man_trk_ctl_single_full_frame_bit_get(dev_priv); goto exit; }