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 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 3235CCCF2E3 for ; Mon, 19 Oct 2026 08:59:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=QQ/t5/morG+FeG8K/3jeaH15CUfk6LVk7izlHOvpWZA=; b=JjsjT4TcZvEPiN87eXEEFB3jm1 PGKdTlFJmGSMcYxkT459tqiOaZarYUKZqTxZBk0+n4ReSFfi8kWzvXZdwRGyis6+P5NfnSnkKNObG XRjK34hGSfgHnlT3tlzL4LCC/weVs7MmgSfCj79xwIgYHKZcPEOOpd54hrhRQGYJjYm9qdc6e8EIp 71o1c/+iYQtAmthYjrrKbMDJFD9npJlj8MCyDUHMbX0yPlaBG5CHL49QEZO0t19+tCzR8fdOnTRpX CoLcTszx8UWDUsFZl5L0/4AskmaPLk29iKtxZn+PRn0NNtPsTb+K9k0/pNQf5bR9CNonuEYWGKs4/ hq9MPjyg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIjDS-00000006vfn-3OpA; Mon, 19 Oct 2026 08:59:34 +0000 Received: from mail-m1973188.qiye.163.com ([220.197.31.88]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xIjDB-00000006vJA-2E2R; Mon, 19 Oct 2026 08:59:19 +0000 Received: from zyb-HP-ProDesk-680-G2-MT.. (unknown [61.154.14.86]) by smtp.qiye.163.com (Hmail) with ESMTP id 5189b861e; Mon, 19 Oct 2026 16:59:14 +0800 (GMT+08:00) From: Damon Ding To: Andrzej Hajda , Neil Armstrong , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jingoo Han , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Peter Griffin , Alim Akhtar , Heiko Stuebner Cc: Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Dmitry Baryshkov , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, Damon Ding Subject: [PATCH v4 11/14] drm/bridge: analogix_dp: Use bridge->next_bridge instead of plat_data field Date: Mon, 19 Oct 2026 16:58:33 +0800 Message-Id: <20261019085836.3065008-12-damon.ding@rock-chips.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20261019085836.3065008-1-damon.ding@rock-chips.com> References: <20261019085836.3065008-1-damon.ding@rock-chips.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-HM-Tid: 0aa15362eafb03a8kunm6ee755052eac64 X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFITzdXWRgWCB1ZQUpXWS1ZQUlXWQ8JGhUIEh9ZQVkaSRoaVkNNGh8aSksYSBpLGVYVFA kWGhdVEwETFhoSFyQUDg9ZV1kYEgtZQVlNSlVKTk9VSk9VQ01ZV1kWGg8SFR0UWUFZT0tIVUpLSU JDQkpVSktLVUtZBg++ DKIM-Signature: a=rsa-sha256; b=WXzQAJes27wfwxftcunwf/Og3fbICg3DLFa4Inlr4bwgvWoOg7gzUvIq6fQjeY0gPlhi0mXrXSjVBGBbjqnWA8HRx+1lb/D0uXwjKY4cxTNUQ5VaxV1qnDNvTXDCYbki6WEU3kdHAGOhBM1RKmnqZ9YJqv72M+KMHGflOp5D3u4=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=QQ/t5/morG+FeG8K/3jeaH15CUfk6LVk7izlHOvpWZA=; h=date:mime-version:subject:message-id:from; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261019_015917_780680_8E45C628 X-CRM114-Status: GOOD ( 17.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The DRM bridge core provides a standard next_bridge field in struct drm_bridge for chaining downstream bridges. Use dp->bridge.next_bridge consistently inside the analogix_dp driver and drop the separate dp->plat_data->next_bridge field. The next bridge is now resolved in analogix_dp_aux_done_probing(): for Exynos platforms with legacy display-timings a display mode bridge is created and used directly, skipping the endpoint lookup; otherwise the remote endpoint bridge (panel or bridge) is looked up via of_drm_get_bridge_by_endpoint(). The reference returned by of_drm_get_bridge_by_endpoint() is transferred to bridge->next_bridge, and an explicit reference is taken for the devm-managed display mode bridge; the bridge core automatically puts bridge->next_bridge at bridge destroy time, pairing with both. Suggested-by: Heiko Stuebner Link: https://lore.kernel.org/all/5609825.iZASKD2KPV@diego/ Tested-by: Heiko Stuebner Signed-off-by: Damon Ding --- Changes in v4: - Add Tested-by tag. --- .../drm/bridge/analogix/analogix_dp_core.c | 44 +++++++++---------- drivers/gpu/drm/exynos/exynos_dp.c | 15 +------ include/drm/bridge/analogix_dp.h | 1 - 3 files changed, 23 insertions(+), 37 deletions(-) diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c index 38857508d939..853b6a6a7fe4 100644 --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c @@ -21,6 +21,7 @@ #include #include +#include #include #include #include @@ -32,6 +33,8 @@ #include #include +#include