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 9E4FBC624A4 for ; Thu, 3 Sep 2026 08:04:43 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 5AAD310F452; Thu, 3 Sep 2026 08:04:43 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="dHVFfB4m"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5AA6310F452; Thu, 3 Sep 2026 08:04:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788422682; x=1819958682; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=bpver/j9JMCfFs+wB554BKAXQ0+MaEdlFNrdSAmVdHE=; b=dHVFfB4mmPwkV7Kx/i/r9aNLWHFDLG6QMo1N+idiPFXs0FTtM68yfFBo BI2cjnXWOG7Z9mCJpC+pTcJBxToVWpERCw/y7tM/nVFCbyHceiWm+3CfP AQP4ka0S499eIpqFabujGC2YXD2X7Wm+P/8QQ6jsha8HwToQTDaRshY3b XkfBxnEMB/wHJkH9fLSJwsvaupwMj3rkL5oRIpeZZlNUQF+XkCYq9IhvW sj5LzzR5BLMHL58V/o79vnR7CA8TBN/qYjTk7PjCD8ZVpoIS6vL3EqtBQ 2xFOXLM2WCozguWrV0IiCM2cEUmu9lvkevxWfaY13xgMQ+7YG95B3ZXwU w==; X-CSE-ConnectionGUID: m9LQCYSvSJyq17hO2Xq8DA== X-CSE-MsgGUID: gvNCQD1IT6OVoLW2dQngMg== X-IronPort-AV: E=McAfee;i="6800,10657,11894"; a="88919219" X-IronPort-AV: E=Sophos;i="6.25,258,1779174000"; d="scan'208";a="88919219" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Sep 2026 01:04:42 -0700 X-CSE-ConnectionGUID: K1Jfp/h2RXGvTg2netVQyg== X-CSE-MsgGUID: MjIFWI6JTEasv511sL5q8A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,258,1779174000"; d="scan'208";a="266397389" Received: from egrumbac-mobl6.ger.corp.intel.com (HELO vgovind2-mobl4.intel.com) ([10.245.250.156]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Sep 2026 01:04:40 -0700 From: Vinod Govindapillai To: intel-xe@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: vinod.govindapillai@intel.com, imre.deak@intel.com, jouni.hogander@intel.com Subject: [PATCH v2 4/5] drm/i915/hotplug: avoid HPD polling if the device is PME capable Date: Thu, 3 Sep 2026 11:04:09 +0300 Message-ID: <20260903080410.489411-5-vinod.govindapillai@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260903080410.489411-1-vinod.govindapillai@intel.com> References: <20260903080410.489411-1-vinod.govindapillai@intel.com> MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - c/o Alberga Business Park, 6 krs Bertel Jungin Aukio 5, 02600 Espoo Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" In supported devices, HPDs can generate PME and which in turn can invoke runtime resume calls for xe. No need to keep the HPD polling in such PME capable devices. Bspec: 52979, 52980, 68857, 68867, 68970 Assisted-by: GitHub_Copilot:claude-opus-5 Signed-off-by: Vinod Govindapillai --- drivers/gpu/drm/i915/display/intel_hotplug.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c index b24c9f360e24..8b7b9f47f049 100644 --- a/drivers/gpu/drm/i915/display/intel_hotplug.c +++ b/drivers/gpu/drm/i915/display/intel_hotplug.c @@ -877,6 +877,11 @@ void intel_hpd_poll_enable(struct intel_display *display) if (!HAS_DISPLAY(display) || !intel_display_device_enabled(display)) return; + if (intel_hpd_can_generate_pme(display)) { + drm_dbg_kms(display->drm, "PME wake capable device, skipping HPD polling.\n"); + return; + } + WRITE_ONCE(display->hotplug.poll_enabled, true); /* -- 2.43.0