From nobody Thu Sep 18 09:56:59 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F1493C352A1 for ; Wed, 7 Dec 2022 10:27:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230259AbiLGK1u (ORCPT ); Wed, 7 Dec 2022 05:27:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229632AbiLGK1W (ORCPT ); Wed, 7 Dec 2022 05:27:22 -0500 Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5D0D21B1DD for ; Wed, 7 Dec 2022 02:27:21 -0800 (PST) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id CBA4C5C00EF; Wed, 7 Dec 2022 05:27:20 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute2.internal (MEProxy); Wed, 07 Dec 2022 05:27:20 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h=cc :cc:content-transfer-encoding:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm2; t=1670408840; x= 1670495240; bh=vNQF1/ogN8Vz4W9wc5Vdm2dmWdFNZe2M9hI8eB4AV7k=; b=c nzeVVUrYhQk13y3TM3HBfdFuSpIPRHA1368XMXBWBmUPMRDh+YI9qanbC25gMnqY WE5Hw2ChpviqJZdaiJZD/NvKoWj2b46WmyBfWG4OKr6T3ZC4On1o9LUFjotot//F R1k5MUSxfHFXemNl80LSywaoY+ZtRzz1D+LxhT/iS8LQE+t3WaT25pEri2aVfuZt CiCgY5w/G6bnCILjhvL125JtfiZ4aNv34myphBIKtKSLvgy6iErXINu01fVSk5Jh xBP48i378Pv9C1s/lPxUWdu2Dyi9OAJxOd77SSDq4lPqVKPgwBBeipiLg57f5fR/ PdoGyyFssfDaK7nFRItuw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:date:date:feedback-id:feedback-id:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to:x-me-proxy:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; t=1670408840; x= 1670495240; bh=vNQF1/ogN8Vz4W9wc5Vdm2dmWdFNZe2M9hI8eB4AV7k=; b=E FufSSqgZoWX6Pd+/luN134DPgN3z/qNfQnCWOQI2lvYqrIjqUv+8TT3YALtyWKSf jElqh+U/1V9DS2K50CnmSDOqBHugZfhdRk5NilVjCaFrV1m/7H2Rfo3St3Qn4gNX mCOCTDevOaTnOvr7PdUdBGnA06lV8vh+Emz9Uw1ph714wlG614UeNatMWWkrYnrU 2aNilyoJUX1e8ydEHS27/MOlhTxFP+mTmTe/xK8x8uHsy10Sn44sfv/7DRhDHLS5 WA01iGYlQN6ePVgPmU6/0mYlC9/tFc/IkStGPKOgpUI/QKixt8H2ag5K1ABeSfis oey9a00iy/U1rWmj//JfA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrudekgdduhecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhfffugggtgffkfhgjvfevofesthejredtredtjeenucfhrhhomhepofgrgihi mhgvucftihhprghrugcuoehmrgigihhmvgestggvrhhnohdrthgvtghhqeenucggtffrrg htthgvrhhnpeevvdelieejgedvkeffheekheeilefhgefgffehteekueelvddtueffheet ledtffenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpe hmrgigihhmvgestggvrhhnohdrthgvtghh X-ME-Proxy: Feedback-ID: i8771445c:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Wed, 7 Dec 2022 05:27:20 -0500 (EST) From: Maxime Ripard Date: Wed, 07 Dec 2022 11:22:46 +0100 Subject: [PATCH 3/6] drm/vc4: dsi: Remove splitting the bridge chain from the driver MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20221207-rpi-dsi-bridge-v1-3-8f68ee0b0adb@cerno.tech> References: <20221207-rpi-dsi-bridge-v1-0-8f68ee0b0adb@cerno.tech> In-Reply-To: <20221207-rpi-dsi-bridge-v1-0-8f68ee0b0adb@cerno.tech> To: Emma Anholt , Maxime Ripard , David Airlie , Daniel Vetter Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Dave Stevenson , Maxime Ripard X-Mailer: b4 0.11.0-dev-8c583 X-Developer-Signature: v=1; a=openpgp-sha256; l=3801; i=maxime@cerno.tech; h=from:subject:message-id; bh=DYzIKgF8O4vqIwwivxAS+tyuqAfWzIHA7ueve8x9kVE=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDMkTMkuXJv61PHzMoUbqyYyZDfeSDkSGJ3/U9bE5sHbTI69d ueGbO0pZGMS4GGTFFFlihM2XxJ2a9bqTjW8ezBxWJpAhDFycAjCRTfEM/z3iOP1vvvabl1Bd65nJkz 0nTV9AdpdsnbeP2HenPcxdGxkZHhzR/jtDr1a5/azIqcd7FpQuOfKo7IP9LeO+ZwoqTGs3cwMA X-Developer-Key: i=maxime@cerno.tech; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dave Stevenson Splitting the bridge chain fails for atomic bridges as the framework can't add the relevant state in drm_atomic_add_encoder_bridges. The chain was split because we needed to power up before calling pre_enable, but that is now done in mode_set, and will move into the framework. Signed-off-by: Dave Stevenson Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_dsi.c | 47 ---------------------------------------= ---- 1 file changed, 47 deletions(-) diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c index 607ebe368409..53d73a6590b7 100644 --- a/drivers/gpu/drm/vc4/vc4_dsi.c +++ b/drivers/gpu/drm/vc4/vc4_dsi.c @@ -557,7 +557,6 @@ struct vc4_dsi { struct platform_device *pdev; =20 struct drm_bridge *out_bridge; - struct list_head bridge_chain; =20 void __iomem *regs; =20 @@ -794,23 +793,9 @@ static void vc4_dsi_encoder_disable(struct drm_encoder= *encoder) { struct vc4_dsi *dsi =3D to_vc4_dsi(encoder); struct device *dev =3D &dsi->pdev->dev; - struct drm_bridge *iter; - - list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) { - if (iter->funcs->disable) - iter->funcs->disable(iter); - - if (iter =3D=3D dsi->out_bridge) - break; - } =20 vc4_dsi_ulps(dsi, true); =20 - list_for_each_entry_from(iter, &dsi->bridge_chain, chain_node) { - if (iter->funcs->post_disable) - iter->funcs->post_disable(iter); - } - clk_disable_unprepare(dsi->pll_phy_clock); clk_disable_unprepare(dsi->escape_clock); clk_disable_unprepare(dsi->pixel_clock); @@ -1111,12 +1096,6 @@ static void vc4_dsi_encoder_enable(struct drm_encode= r *encoder) { struct vc4_dsi *dsi =3D to_vc4_dsi(encoder); bool debug_dump_regs =3D false; - struct drm_bridge *iter; - - list_for_each_entry_reverse(iter, &dsi->bridge_chain, chain_node) { - if (iter->funcs->pre_enable) - iter->funcs->pre_enable(iter); - } =20 if (dsi->mode_flags & MIPI_DSI_MODE_VIDEO) { DSI_PORT_WRITE(DISP0_CTRL, @@ -1133,11 +1112,6 @@ static void vc4_dsi_encoder_enable(struct drm_encode= r *encoder) DSI_DISP0_ENABLE); } =20 - list_for_each_entry(iter, &dsi->bridge_chain, chain_node) { - if (iter->funcs->enable) - iter->funcs->enable(iter); - } - if (debug_dump_regs) { struct drm_printer p =3D drm_info_printer(&dsi->pdev->dev); dev_info(&dsi->pdev->dev, "DSI regs after:\n"); @@ -1625,7 +1599,6 @@ static int vc4_dsi_bind(struct device *dev, struct de= vice *master, void *data) =20 dsi->variant =3D of_device_get_match_data(dev); =20 - INIT_LIST_HEAD(&dsi->bridge_chain); dsi->encoder.type =3D dsi->variant->port ? VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0; =20 @@ -1762,32 +1735,12 @@ static int vc4_dsi_bind(struct device *dev, struct = device *master, void *data) ret =3D drm_bridge_attach(encoder, dsi->out_bridge, NULL, 0); if (ret) return ret; - /* Disable the atomic helper calls into the bridge. We - * manually call the bridge pre_enable / enable / etc. calls - * from our driver, since we need to sequence them within the - * encoder's enable/disable paths. - */ - list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain); =20 return 0; } =20 -static void vc4_dsi_unbind(struct device *dev, struct device *master, - void *data) -{ - struct vc4_dsi *dsi =3D dev_get_drvdata(dev); - struct drm_encoder *encoder =3D &dsi->encoder.base; - - /* - * Restore the bridge_chain so the bridge detach procedure can happen - * normally. - */ - list_splice_init(&dsi->bridge_chain, &encoder->bridge_chain); -} - static const struct component_ops vc4_dsi_ops =3D { .bind =3D vc4_dsi_bind, - .unbind =3D vc4_dsi_unbind, }; =20 static int vc4_dsi_dev_probe(struct platform_device *pdev) --=20 2.38.1