From patchwork Fri May 3 15:11:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lucas Stach X-Patchwork-Id: 13652992 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B904AC25B10 for ; Fri, 3 May 2024 15:12:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=KKKcIJ2oB64BZsNTKPCFzcM/BnsAvWe68VHk8RBX2Bg=; b=U8+XqBfeaifbVC urA4xzK/jKj6RLo/IZf5ExJRSzxVWH8oJEJaW1B1OwZu6RLXO9Qtf4I0PKv7lS7k5OvMdyFwjN/wO u9B7LwBY5Uo3+N19xc/13p3RLjeJ8xqyb/SfOYJqKYs5cCMVJMc+r8ZvYEsTxPZS6TztoQQKhhyH7 a/nMvnzNu5hCN5+BSTVOIdTiv1Zm286oqFNDqnf0JHnf6qj7PS7Nl/oL45pZzcbTWc+KvOnIInr5I s+oE2K4aEPmq7KcKvS+ZnWZZK7PnLUzzlj0fyTUviFViveLe5etZL17WqXw2D0FlojjFAmzzleykp y5ele81xzq73pl3cO5pQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1s2ua6-0000000Gz5u-1XZO; Fri, 03 May 2024 15:12:14 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s2ua0-0000000GyzC-2VXV for linux-rockchip@bombadil.infradead.org; Fri, 03 May 2024 15:12:08 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:MIME-Version :References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=ew5B0UrcRsUBQPbdNqEHDDEexKlaTLRffEcM2ZRHKl4=; b=MK0AbneforSdw6p+4G4iRhZ80d ToyD8IUoJ32psWUD5V5YnNXPIPAx+LW1lAwzUzMBlce4c4IhgHDhnT8CSuMSpk7TSua/YWTA9nTxw cZJVM5InhmFILkr2NLWcMpfFYKQeApapMTREL0dpmM0EO3wE+oXA0DXP+nD8Lb6JzBboCgLUiYof0 mBHBL998h5FQYzwqQcF1mbn73kxP8Jm6kV8I5zmkifovazgeyLCioLb/3f6mXVdxedcttX2d2AC3a MiTlS6DWaFJ9zd+FsEZnOdffrl//ZI7JoYXMxmFVa2JuD1t8vFIlpaykv1fGQG7vNoZeW7e1aDTa6 CjPPSuQA==; Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by desiato.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1s2uZt-00000000aab-432Q for linux-rockchip@lists.infradead.org; Fri, 03 May 2024 15:12:04 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1s2uZR-0004Bu-K6; Fri, 03 May 2024 17:11:33 +0200 Received: from [2a0a:edc0:0:1101:1d::28] (helo=dude02.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.94.2) (envelope-from ) id 1s2uZN-00FjHY-JD; Fri, 03 May 2024 17:11:29 +0200 From: Lucas Stach To: =?utf-8?q?Heiko_St=C3=BCbner?= , Andy Yan , Sandy Huang , Jingoo Han , Inki Dae , Seung-Woo Kim , Kyungmin Park , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec Cc: linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org, kernel@pengutronix.de, patchwork-lst@pengutronix.de Subject: [PATCH 03/14] drm/bridge: analogix_dp: register AUX bus after enabling runtime PM Date: Fri, 3 May 2024 17:11:18 +0200 Message-Id: <20240503151129.3901815-4-l.stach@pengutronix.de> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240503151129.3901815-1-l.stach@pengutronix.de> References: <20240503151129.3901815-1-l.stach@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: l.stach@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-rockchip@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240503_161202_141133_F2243DF0 X-CRM114-Status: UNSURE ( 9.40 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org AUX transactions require the controller to be in working state and take a runtime PM reference. To avoid potential races beween the first transactions on the bus and runtime PM being set up, move the AUX registration behind the runtime PM setup. Signed-off-by: Lucas Stach Reviewed-by: Robert Foss --- .../drm/bridge/analogix/analogix_dp_core.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index b39721588980..0af2a70ae5bf 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -1728,31 +1728,34 @@ int analogix_dp_bind(struct analogix_dp_device *dp, struct drm_device *drm_dev) dp->drm_dev = drm_dev; dp->encoder = dp->plat_data->encoder; + pm_runtime_use_autosuspend(dp->dev); + pm_runtime_set_autosuspend_delay(dp->dev, 100); + pm_runtime_enable(dp->dev); + dp->aux.name = "DP-AUX"; dp->aux.transfer = analogix_dpaux_transfer; dp->aux.dev = dp->dev; dp->aux.drm_dev = drm_dev; ret = drm_dp_aux_register(&dp->aux); - if (ret) - return ret; - - pm_runtime_use_autosuspend(dp->dev); - pm_runtime_set_autosuspend_delay(dp->dev, 100); - pm_runtime_enable(dp->dev); + if (ret) { + DRM_ERROR("failed to register AUX (%d)\n", ret); + goto err_disable_pm_runtime; + } ret = analogix_dp_create_bridge(drm_dev, dp); if (ret) { DRM_ERROR("failed to create bridge (%d)\n", ret); - goto err_disable_pm_runtime; + goto err_unregister_aux; } return 0; +err_unregister_aux: + drm_dp_aux_unregister(&dp->aux); err_disable_pm_runtime: pm_runtime_dont_use_autosuspend(dp->dev); pm_runtime_disable(dp->dev); - drm_dp_aux_unregister(&dp->aux); return ret; }