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 682BBCD5BA4 for ; Tue, 19 May 2026 10:40:51 +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=QTBgLfeJdbyLF0o3Uh3AuWsgdFoP94RbZ7q3dzi5n8w=; b=Fs03rvDnwYuIC8XxdLpvyZ+X0c guCAkg0u3XOMnSLdf8Ja6XLYzWSJRaoBqNTLIiV7F8bukCnBAMGFHlFl6qKpFclKO59ud1rwSAxjJ Z7StDumtapqgydeoEBWStepDHGGuD1X+AyTy4EOLqi+/EQlrdXhpA8hbb7aQZ/Qn4fYFsemE9zIsl PVhpP1WobnpB33IhlJxidmc1a387IceKrAA74s9ABACPucaKwivM0/Nf++/iG8LY6HpP2Z98XFozv VUPXRrGU249V2oVYZKmp/ZSIwcQWiFUpEC6WbtyFB249DchuMDyiqy45cAC0UOO2vztD4WvIeBA1v pkAdI7CQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPHsT-00000001A1c-0hJf; Tue, 19 May 2026 10:40:45 +0000 Received: from smtpout-03.galae.net ([185.246.85.4]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPHsK-000000019pz-2PWg for linux-arm-kernel@lists.infradead.org; Tue, 19 May 2026 10:40:43 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-03.galae.net (Postfix) with ESMTPS id 249854E42CF5; Tue, 19 May 2026 10:40:35 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id EC8E8606E9; Tue, 19 May 2026 10:40:34 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 93ABC107E8A20; Tue, 19 May 2026 12:40:29 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1779187233; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=QTBgLfeJdbyLF0o3Uh3AuWsgdFoP94RbZ7q3dzi5n8w=; b=S3onPUPWiUkG14dSDJ/4D30iXq6YVZFYX5uox5ys0ms9npERtrayEyx+5AxFFEi7XkUOY0 MY44obR9CEebjZGxzRYJo9h/hsz7E8BWk6A8nHdyW7JPkF5eqg+qCB/+mOjMejoXa1GYnf hgcDq2iqtRrA2rUXqOvwOfQZm1y1v9vDb4HuCFn89tQvMBMB4o7a3E//dl5Ed+pHOYS/9w IQT8be670py57dEyhp8Rwn9wRLqhbkh0X3zMby2aAcAOYKs/GG7r56+PBGI7Wp6WOqBSUA ezYlvMiEHnIdL8dQG7V5CDzMKlFb1PPpzH4NnlJU4+6+j2zorAtN15yWFbXgjQ== From: Luca Ceresoli Date: Tue, 19 May 2026 12:37:51 +0200 Subject: [PATCH 34/37] drm/bridge: ti-sn65dsi83: implement .is_tail MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260519-drm-bridge-hotplug-v1-34-45e2bdb3dfb4@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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260519_034036_787854_E5028D7D X-CRM114-Status: UNSURE ( 8.96 ) 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 This bridge is never a tail bridge, i.e. it always 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/ti-sn65dsi83.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/bridge/ti-sn65dsi83.c b/drivers/gpu/drm/bridge/ti-sn65dsi83.c index a4f2a86a09be..5613c8812318 100644 --- a/drivers/gpu/drm/bridge/ti-sn65dsi83.c +++ b/drivers/gpu/drm/bridge/ti-sn65dsi83.c @@ -293,6 +293,11 @@ static struct sn65dsi83 *bridge_to_sn65dsi83(struct drm_bridge *bridge) return container_of(bridge, struct sn65dsi83, bridge); } +static bool sn65dsi83_is_tail(struct drm_bridge *bridge) +{ + return false; +} + static int sn65dsi83_attach(struct drm_bridge *bridge, struct drm_encoder *encoder, enum drm_bridge_attach_flags flags) @@ -792,6 +797,7 @@ sn65dsi83_atomic_get_input_bus_fmts(struct drm_bridge *bridge, } static const struct drm_bridge_funcs sn65dsi83_funcs = { + .is_tail = sn65dsi83_is_tail, .attach = sn65dsi83_attach, .detach = sn65dsi83_detach, .atomic_enable = sn65dsi83_atomic_enable, @@ -1066,6 +1072,7 @@ static int sn65dsi83_probe(struct i2c_client *client) dev_set_drvdata(dev, ctx); i2c_set_clientdata(client, ctx); + ctx->bridge.ops = DRM_BRIDGE_OP_IS_TAIL; ctx->bridge.of_node = dev->of_node; ctx->bridge.pre_enable_prev_first = true; ctx->bridge.type = DRM_MODE_CONNECTOR_LVDS; -- 2.54.0