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 78071CA5FCB for ; Thu, 1 Oct 2026 12:44:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D81DD10F65E; Thu, 1 Oct 2026 12:44:39 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=bootlin.com header.i=@bootlin.com header.b="c5fuW65g"; dkim-atps=neutral Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) by gabe.freedesktop.org (Postfix) with ESMTPS id BB53B10F65E for ; Thu, 1 Oct 2026 12:44:38 +0000 (UTC) Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 8E1EE1A24DD; Thu, 1 Oct 2026 12:44:37 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 6003560341; Thu, 1 Oct 2026 12:44:37 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 95B5D10328140; Thu, 1 Oct 2026 14:44:27 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1790858672; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=Vb5gHDW38cFyiUtq3J31okaWES/ZSz5dlUdyKZGivyc=; b=c5fuW65gwFZgwXNxV8v5wcIh9zkecfihLXRN47onOYQzm+2MsdAOkpGiZYQwN65yG56h49 DTca+WeSM/bwWNgKLJVIDCC8mCtb3KBBVflzugOk5RuGSGXVitHViBibOa1ndmiGJSsMNj tSIB0gmOC5izDj0h36JIv/20Kue5RdEgfTl3rtsO3sQKTtPiANbpQu3ECckENi5PT1pbRO 7qHwv9jMbaKUjxUI6cZmfp9YMq4njKxAV4gCNFtkbnBs99Sl974e/aHyexQXA6LBDdziq2 q2d7XflvQTDIANoVEfUttWshVJx5VX6GulikZFlaXJ8nW9VuFZROGDNk82o7vw== From: Luca Ceresoli Date: Thu, 01 Oct 2026 14:42:40 +0200 Subject: [PATCH RFC v2 18/24] drm/panel: 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-v2-18-8e34986dcb68@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-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This bridge never has a next bridge. Add get_next_callback func to expose this. Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/drm_panel.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c index c00529bfb706..8a2a99cca683 100644 --- a/drivers/gpu/drm/drm_panel.c +++ b/drivers/gpu/drm/drm_panel.c @@ -77,6 +77,11 @@ static const struct drm_connector_funcs panel_bridge_connector_funcs = { .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, }; +static struct drm_bridge *drm_panel_bridge_get_next_bridge(struct drm_bridge *bridge) +{ + return NULL; +} + static int panel_bridge_attach(struct drm_bridge *bridge, struct drm_encoder *encoder, enum drm_bridge_attach_flags flags) @@ -217,6 +222,7 @@ static void panel_bridge_debugfs_init(struct drm_bridge *bridge, } static const struct drm_bridge_funcs panel_bridge_bridge_funcs = { + .get_next_bridge = drm_panel_bridge_get_next_bridge, .attach = panel_bridge_attach, .detach = panel_bridge_detach, .atomic_pre_enable = panel_bridge_atomic_pre_enable, @@ -600,7 +606,7 @@ void drm_panel_add(struct drm_panel *panel) mutex_unlock(&panel_lock); panel->bridge.of_node = panel->dev->of_node; - panel->bridge.ops = DRM_BRIDGE_OP_MODES; + panel->bridge.ops = DRM_BRIDGE_OP_MODES | DRM_BRIDGE_OP_GET_NEXT_BRIDGE; panel->bridge.type = panel->connector_type; panel->bridge.pre_enable_prev_first = panel->prepare_prev_first; -- 2.55.0