From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpout-04.galae.net (smtpout-04.galae.net [185.171.202.116]) (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 B1DD432B13F for ; Tue, 19 May 2026 10:40:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.171.202.116 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779187229; cv=none; b=k2UGTuplzOL3wJSDfv8HNrxnKLILAumgf3A9hNjctnMWpBDx36YcZ8p1WsFBs60dKFjddyRSbCOrM9KMccJpEKHADh6drnrGPzqI8WoMP1YSdIBI2cUugJowT42GPA0/nA/65cfIoWJTz9NxWXLk2U6GACsd6eT+EJcB1IzChdw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779187229; c=relaxed/simple; bh=lkjVZg9vpS4ljCAhd540O9Rhi31RLmW0pLx/SUaTQfM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=eA4+/a6C7+NchDjZDjJWt7fwid0HJYIvfHSO1oC4T2Fxh1W7GnFWG7izd9wNiZhQPL2rVOECMmKyQdkq9jCC8dF83iopALx294xeYyYVHngwswVu5JBA94ochdnQ/s0T76QRfkN4Zc1h4vOlgp0pZogm6Uz9PowEU6e2rKxuCZ4= 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=T2N7PCEV; arc=none smtp.client-ip=185.171.202.116 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="T2N7PCEV" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-04.galae.net (Postfix) with ESMTPS id A7445C2B9E5; Tue, 19 May 2026 10:41:19 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 7D843606E9; Tue, 19 May 2026 10:40:26 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 48445107E8B03; Tue, 19 May 2026 12:40:19 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1779187224; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=oaDZzNhhlsYfML//xOFG6wXWu65nBogs+zUTIz1RF5A=; b=T2N7PCEVTYuTIU/5aFtL7cpuaWtxZfffb3xfVtA1+0l/280seqzJHH8z3a/bdTY6qX2Phx oKG+/QhlBnQZfNJ5rX3rGKFbSn7vXUx8uBPdiqPsUIzfFuR65GWIaKc3hmcSTOnTBVeIRz xG9jrGkyD223AxSEW2TUMqu6WQ0Geb/xr4X6CLxuEg30pGGb8heXHi704vaN+dRhDREnGy x0KKbq7d/YONoI+Qan9EJ+f6kSQLIqfh55AxPUD7mqrRY8eCBQ0RkCLOZL2VoSJdRsQfXB xSFH5qg0P3s3x9Js61QcoCHSCkAataRa3DRieMQtzs1d/4s1hARFu47Y9jrYXA== From: Luca Ceresoli Date: Tue, 19 May 2026 12:37:49 +0200 Subject: [PATCH 32/37] drm/bridge: display-connector: implement .is_tail 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: <20260519-drm-bridge-hotplug-v1-32-45e2bdb3dfb4@bootlin.com> References: <20260519-drm-bridge-hotplug-v1-0-45e2bdb3dfb4@bootlin.com> In-Reply-To: <20260519-drm-bridge-hotplug-v1-0-45e2bdb3dfb4@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 , Marek Vasut , Stefan Agner , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Cc: Hui Pu , Ian Ray , Thomas Petazzoni , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, Luca Ceresoli X-Mailer: b4 0.15.2 X-Last-TLS-Session-Version: TLSv1.3 This bridge is always a tail bridge, i.e. it never needs a following bridge to complete the pipeline. Add a is_tail func to expose this. Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/bridge/display-connector.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/bridge/display-connector.c b/drivers/gpu/drm/bridge/display-connector.c index 16c0631adeb1..1c8111bdc89e 100644 --- a/drivers/gpu/drm/bridge/display-connector.c +++ b/drivers/gpu/drm/bridge/display-connector.c @@ -33,6 +33,11 @@ to_display_connector(struct drm_bridge *bridge) return container_of(bridge, struct display_connector, bridge); } +static bool display_connector_is_tail(struct drm_bridge *bridge) +{ + return true; +} + static int display_connector_attach(struct drm_bridge *bridge, struct drm_encoder *encoder, enum drm_bridge_attach_flags flags) @@ -176,6 +181,7 @@ static u32 *display_connector_get_input_bus_fmts(struct drm_bridge *bridge, } static const struct drm_bridge_funcs display_connector_bridge_funcs = { + .is_tail = display_connector_is_tail, .attach = display_connector_attach, .detect = display_connector_bridge_detect, .edid_read = display_connector_edid_read, @@ -370,6 +376,7 @@ static int display_connector_probe(struct platform_device *pdev) conn->bridge.of_node = pdev->dev.of_node; + conn->bridge.ops = DRM_BRIDGE_OP_IS_TAIL; if (conn->bridge.ddc) conn->bridge.ops |= DRM_BRIDGE_OP_EDID | DRM_BRIDGE_OP_DETECT; -- 2.54.0