From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-02.galae.net (smtpout-02.galae.net [185.246.84.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 19C803D9020 for ; Thu, 1 Oct 2026 12:44:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.246.84.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790858680; cv=none; b=ta0Gvm/CgOvOeQ9tinejfE3aDQEX+uJnL2b4eY7ojbdRJHyPqjp1vNsemOQryAYh9Nu+Pqk1FL+EucGceWSz2g7GqFte0IW81VD0ocyzNiZYoNk1gTlAsjBMYaGR+AlT4dYjpcgC5Cs/GJo0JoEubTdpOdJGPJFcboFR7mzOJmQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790858680; c=relaxed/simple; bh=75d3lXAhwf5/Y3h079EQOqTCeKBh8TRYkjDCTsWa7Nc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=PiYcdWnFf4l3ySz7lMpVFFOl3awJr5ZXH7RvN+0sJpZxhomjfpbxy5n1tDXQ8QOnv+VfrPQ+KgnQk6MWFolbooWC/EjbMAQbtiSMc3Y4R2jSN+vnF09Pum8+RW7bIar+OwI++CZqapXCLTZqt3tTCHYoQF5HzQG8PibC0Xoj+ts= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=c5fuW65g; arc=none smtp.client-ip=185.246.84.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="c5fuW65g" 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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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