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 C1540CD8CA4 for ; Mon, 8 Jun 2026 13:44:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 508E110F3F9; Mon, 8 Jun 2026 13:44:08 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=dolcini.it header.i=@dolcini.it header.b="k0CkhSSu"; dkim-atps=neutral X-Greylist: delayed 314 seconds by postgrey-1.36 at gabe; Mon, 08 Jun 2026 08:44:34 UTC Received: from mail11.truemail.it (mail11.truemail.it [217.194.8.81]) by gabe.freedesktop.org (Postfix) with ESMTPS id 79F8910EF72; Mon, 8 Jun 2026 08:44:34 +0000 (UTC) Received: from francesco-nb (xcpe-178-82-120-96.dyn.res.sunrise.net [178.82.120.96]) by mail11.truemail.it (Postfix) with ESMTPA id CE9F41FC18; Mon, 8 Jun 2026 10:39:15 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1780907957; bh=z8UFPckcbkUDtOhYm05+yDC1pbRjWLGHos3Y900ReCg=; h=From:To:Subject; b=k0CkhSSuENH6FvKBjSYNZqeeBs0nsjwzBN7/rWsUL39SC6f99XSrqQBMKFB57XHrd 3I8h/qU+JaiL9PImIm+fRWgEURAlZsg+f6eiqkez2YVTzhHqLybK219HsDvkbDoqI3 dM4IMHjgbC49Y7YiW/j9OtVVLjStJ5biCTWGGtjXn9zPcit2UxxQjslLiDtDhtZmzZ WnS/Mwz1fHg9p3qzbaIODY+ZdLF/BHd/P7MLF2aAX0JID2Crf3q5aUUGWFvUbsd9pF mK+nMKrowzyVzDHOpjAZ3SxbAStwTG5WA+EKfecTWhcLrCP3Gi+iVMNM8iNungmUR7 MjXbLTJ+8CuiQ== Date: Mon, 8 Jun 2026 10:39:11 +0200 From: Francesco Dolcini To: Dmitry Baryshkov Cc: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Heikki Krogerus , Greg Kroah-Hartman , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Adrien Grassein , Jani Nikula , Rodrigo Vivi , Joonas Lahtinen , Tvrtko Ursulin , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Tomi Valkeinen , Bjorn Andersson , Konrad Dybcio , Pengyu Luo , Nikita Travkin , Yongxing Mou , Luca Ceresoli , Francesco Dolcini , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org Subject: Re: [PATCH v4 4/8] drm/bridge: pass extra events to the HPD callback Message-ID: <20260608083911.GA35760@francesco-nb> References: <20260608-hpd-irq-events-v4-0-30b62b335487@oss.qualcomm.com> <20260608-hpd-irq-events-v4-4-30b62b335487@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260608-hpd-irq-events-v4-4-30b62b335487@oss.qualcomm.com> X-Mailman-Approved-At: Mon, 08 Jun 2026 13:44:07 +0000 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" On Mon, Jun 08, 2026 at 12:33:05AM +0300, Dmitry Baryshkov wrote: > The DisplayPort standard defines a special kind of HPD events called > IRQ_HPD. These events are used to notify DP Source about the events on > the Sink side. > > Bridge drivers report these events through the > drm_bridge_hpd_notify_extra(). Pass down the extra status to the HPD > callback, specified during the drm_bridge_hpd_enable(), letting > underlying drivers (e.g. drm_bridge_connector) to receive these events. > > Signed-off-by: Dmitry Baryshkov Acked-by: Francesco Dolcini # lt8912b