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 E5638CA5FD2 for ; Thu, 1 Oct 2026 12:45:08 +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:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=J37od7VylY8s1OgC3uLV5wfOGm4SfNZZc7AuhkqKTIM=; b=3ApwVUSYiYrusAkc3O7lUbgbM8 fNAvpojuvXwFPygSuBqOpyPVGhnPa5AZlyuEUXiAV6wciHUL2cgJOvA5zDTyRXX6SZEBUTTSstqpa QRHXmGKzqg7OIuBUKKdoC1G+KoDOFr+STTkbKdtJGMwriyo5YozLIOvim1jeivrNWad2cCcHcoGcB G4CvH6t2SJHyVFLCupzsg9YOffAvoqhNOlsdUta5sJ27AZst/RaHZijXwQi8EoPwVmIQ/lIbkysIs bdi3IP633wr167XZjCTXzhlCddaI45d0tiJhpBy8b34UOT9bwUa2ipAUx8fhmRvzeHDrI6+3iehIA ZToKKUQA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCG9l-000000097ec-3SIs; Thu, 01 Oct 2026 12:45:01 +0000 Received: from smtpout-02.galae.net ([185.246.84.56]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCG9j-000000097ar-11xl for linux-arm-kernel@lists.infradead.org; Thu, 01 Oct 2026 12:45:00 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id A8A1E1A24DD; Thu, 1 Oct 2026 12:44:57 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7490460341; Thu, 1 Oct 2026 12:44:57 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id D2282103280C2; Thu, 1 Oct 2026 14:44:50 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1790858695; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=J37od7VylY8s1OgC3uLV5wfOGm4SfNZZc7AuhkqKTIM=; b=oZmPZJ8cm2BuGFlIWQ+DWojJEuh5j4c1xhUnrfCUYiiel1PdZN35fW8a3KgomlbdeXwYAZ v+rC5qKObqmmyna/2kTcyU2b9XUguN+IwHlPuuM6GV2uIjS59/4e6JXiz571GejwI9MXfu 3rEd9OJ33Lnly+L9b+Pj8/Ov4pzNntBPtQXv2RIHEXNHZTPl8fEv5l7N7kgv/UMC8/WEe9 80q1DO03c3SLHVHRRvdzaq91BP4PqSWx9YS7vqsi8E9Hzqd6iQPUgCmVwIdOefKqU2m4/E 1QLhtXUIlBANFioif9w02x4wvPX1YTGuASrDRel/Lq98lMU2G68yFfbvLfJi3A== From: Luca Ceresoli Date: Thu, 01 Oct 2026 14:42:44 +0200 Subject: [PATCH RFC v2 22/24] drm/bridge: samsung-dsim: implement .get_next_bridge MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261001-drm-bridge-hotplug-v2-22-8e34986dcb68@bootlin.com> References: <20261001-drm-bridge-hotplug-v2-0-8e34986dcb68@bootlin.com> In-Reply-To: <20261001-drm-bridge-hotplug-v2-0-8e34986dcb68@bootlin.com> To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Inki Dae , Jagan Teki , Marek Szyprowski , Jessica Zhang , Douglas Anderson , Marek Vasut , Stefan Agner , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: Hui Pu , Ian Ray , Luca Ceresoli , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org X-Mailer: b4 0.16.0 X-Last-TLS-Session-Version: TLSv1.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261001_054459_439727_4DACB69E X-CRM114-Status: UNSURE ( 9.45 ) X-CRM114-Notice: Please train this message. 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 Add get_next_callback func to expose the next bridge. Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/bridge/samsung-dsim.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index 6c48404fd60a..2da3a13260b9 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -1821,6 +1821,13 @@ static void samsung_dsim_mode_set(struct drm_bridge *bridge, drm_mode_copy(&dsi->mode, adjusted_mode); } +static struct drm_bridge *samsung_dsim_get_next_bridge(struct drm_bridge *bridge) +{ + struct samsung_dsim *dsi = bridge_to_dsi(bridge); + + return dsi->bridge.next_bridge ?: ERR_PTR(-ENODEV); +} + static int samsung_dsim_attach(struct drm_bridge *bridge, struct drm_encoder *encoder, enum drm_bridge_attach_flags flags) @@ -1835,6 +1842,7 @@ static int samsung_dsim_attach(struct drm_bridge *bridge, } static const struct drm_bridge_funcs samsung_dsim_bridge_funcs = { + .get_next_bridge = samsung_dsim_get_next_bridge, .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, .atomic_create_state = drm_atomic_helper_bridge_create_state, @@ -2200,6 +2208,7 @@ int samsung_dsim_probe(struct platform_device *pdev) dsi->bridge.of_node = dev->of_node; dsi->bridge.type = DRM_MODE_CONNECTOR_DSI; + dsi->bridge.ops = DRM_BRIDGE_OP_GET_NEXT_BRIDGE; /* DE_LOW: i.MX8M Mini/Nano LCDIF-DSIM glue logic inverts HS/VS/DE */ if (dsi->plat_data->hw_type == DSIM_TYPE_IMX8MM) -- 2.55.0