From mboxrd@z Thu Jan 1 00:00:00 1970 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E4D16C77B73 for ; Tue, 6 Jun 2023 19:15:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 547F310E3AC; Tue, 6 Jun 2023 19:15:55 +0000 (UTC) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1523010E395 for ; Tue, 6 Jun 2023 19:15:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1686078954; x=1717614954; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=N7gj/u0UcuTaDBuKQqxJz21z/20uRFUBQL6yVHtYldw=; b=GHU3svo0J+TkL7RtSpa3ZaV6Y51UMHNIoffhqD54DUdaqtPPojTtmP7k bRhvD/Ubv8/3IhhXn8Qzf7ulmXn0kUwibn/+/LW8zLTKi1yCm/LGAnXRh v0+8tXcuJNcSmJlZyRFmYJEdoDW0hP7wMXSxgV0B4dfC6NV9Qww6Jq0G+ n71rOSECJuy6UWz6AHDaiwxeNhIOKh3mSWbDYwE45iXIxsi3//3eaXTzA Z+vRKe7TbBRINIbyCOm3HBDZc4pZGAjfjuZEKlJKrBrMkXOgbYTpAii6T ZGvKzB4Zv4lBvYtDyjAVmFk9vtLOv9c8JQ9Ohjpp1M+ByCHdsDP8OX3uf w==; X-IronPort-AV: E=McAfee;i="6600,9927,10733"; a="443146370" X-IronPort-AV: E=Sophos;i="6.00,221,1681196400"; d="scan'208";a="443146370" Received: from orsmga002.jf.intel.com ([10.7.209.21]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Jun 2023 12:15:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10733"; a="709187151" X-IronPort-AV: E=Sophos;i="6.00,221,1681196400"; d="scan'208";a="709187151" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.70]) by orsmga002.jf.intel.com with SMTP; 06 Jun 2023 12:15:51 -0700 Received: by stinkbox (sSMTP sendmail emulation); Tue, 06 Jun 2023 22:15:51 +0300 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Date: Tue, 6 Jun 2023 22:15:00 +0300 Message-Id: <20230606191504.18099-16-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20230606191504.18099-1-ville.syrjala@linux.intel.com> References: <20230606191504.18099-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Intel-gfx] [PATCH v2 15/19] drm/i915: Introduce skl_watermark_max_latency() 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 The DSB code will want to know the maximum PkgC latency it has to contend with. Add a helper to expose that information. Signed-off-by: Ville Syrjälä --- drivers/gpu/drm/i915/display/skl_watermark.c | 14 ++++++++++++++ drivers/gpu/drm/i915/display/skl_watermark.h | 2 ++ 2 files changed, 16 insertions(+) diff --git a/drivers/gpu/drm/i915/display/skl_watermark.c b/drivers/gpu/drm/i915/display/skl_watermark.c index d1245c847f1c..a31adbca9dbc 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.c +++ b/drivers/gpu/drm/i915/display/skl_watermark.c @@ -3719,3 +3719,17 @@ void skl_watermark_debugfs_register(struct drm_i915_private *i915) debugfs_create_file("i915_sagv_status", 0444, minor->debugfs_root, i915, &intel_sagv_status_fops); } + +unsigned int skl_watermark_max_latency(struct drm_i915_private *i915) +{ + int level; + + for (level = i915->display.wm.num_levels - 1; level >= 0; level--) { + unsigned int latency = skl_wm_latency(i915, level, NULL); + + if (latency) + return latency; + } + + return 0; +} diff --git a/drivers/gpu/drm/i915/display/skl_watermark.h b/drivers/gpu/drm/i915/display/skl_watermark.h index f91a3d4ddc07..edb61e33df83 100644 --- a/drivers/gpu/drm/i915/display/skl_watermark.h +++ b/drivers/gpu/drm/i915/display/skl_watermark.h @@ -46,6 +46,8 @@ void skl_watermark_ipc_update(struct drm_i915_private *i915); bool skl_watermark_ipc_enabled(struct drm_i915_private *i915); void skl_watermark_debugfs_register(struct drm_i915_private *i915); +unsigned int skl_watermark_max_latency(struct drm_i915_private *i915); + void skl_wm_init(struct drm_i915_private *i915); struct intel_dbuf_state { -- 2.39.3