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 B56B3CD4851 for ; Tue, 19 May 2026 10:40:24 +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=XPnXnL28rnew1q1eDqo7jc72bZYvB4PM1bXhy+LViR8=; b=yyXQGMC9UEc+G8vHo1eX3UToXB ol6E98MVcuVZc6YmQLmRW4JWiBD3RzCDV2R2r1JamSHIVZQcrB8PdSEpcYth1H9uG/TZQapOyWqU0 /g0sHLQflvXGKbZiPHN/XUF+M3ePs+xRVIzS2lflV3Ofb0HfhYEbXNBLjf6lX1fEHCRRZjPkp52ct CelgjFjK+4Esl8fbdI7my1R1Rt1FZh3pRcYBShgYEczA7Thc4+wxFiqURX6JNJ+UWyJmDAmZcAfo/ 6Ea+RnjIJnI/fUUGywd+PSFcTr5pi0GjzxW3GUWTZApIVuxynvbkUm4IkluHX7t79QFuxwoeeuyx9 0louNQ2Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wPHs2-000000019Qa-0Wlr; Tue, 19 May 2026 10:40:18 +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 1wPHry-000000019LX-1tl6 for linux-arm-kernel@lists.infradead.org; Tue, 19 May 2026 10:40:15 +0000 Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 1501E1A3629; Tue, 19 May 2026 10:40:13 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id D3401606E9; Tue, 19 May 2026 10:40:12 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 4AA2D107E8AE7; Tue, 19 May 2026 12:40:07 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1779187211; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=XPnXnL28rnew1q1eDqo7jc72bZYvB4PM1bXhy+LViR8=; b=xIWpGSJc3I8LET6EbkDG+Nla5ohZq8g8XGvlTlC07NzLdPwZGXhp1zST0RdzD0veUGtI4S swuJhpmqt27iNxEG9ucGtb3qbiUh+/+Q75tNRTdED/VgMgv16qHq8Wq2H703LS1W1euRFB jAx6EIvItpAPEFP+ZfGO2wvKcc6oahowivGxMUSWP1R6Zf96JcUO9fkUvnP54/vuiqCDDw xZkOCZx3yJrXJLK2zytWtiuN1keBO9My/He1vAIFhcMzEmIEo70kF7vtIQ/LRUM+Y6F1ZU Dha7WXg6MAOJozjGtVdjwVnUBqnJczTXe7jLji9m/SCxFpQivb2XeEVhle7kxQ== From: Luca Ceresoli Date: Tue, 19 May 2026 12:37:46 +0200 Subject: [PATCH 29/37] drm/mipi-dsi: notify about DSI attach MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260519-drm-bridge-hotplug-v1-29-45e2bdb3dfb4@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_034014_646960_CA51A9FE X-CRM114-Status: GOOD ( 10.36 ) 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 In preparation to support DRM bridge hotplug, let the drm_mipi_dsi code emit an event when a DSI device is attached to the corresponding DSI host, so that this event can trigger the actions needed to deconfigure the pipeline and unregister the connector as appropriate. Signed-off-by: Luca Ceresoli --- drivers/gpu/drm/Kconfig | 1 + drivers/gpu/drm/drm_mipi_dsi.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index 3093d5f30724..288845b6621b 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -45,6 +45,7 @@ config DRM_MIPI_DBI config DRM_MIPI_DSI tristate depends on DRM + select DRM_EVENT_NOTIFIER config DRM_KMS_HELPER tristate diff --git a/drivers/gpu/drm/drm_mipi_dsi.c b/drivers/gpu/drm/drm_mipi_dsi.c index 3ac1dd5ad640..eaa474da4a51 100644 --- a/drivers/gpu/drm/drm_mipi_dsi.c +++ b/drivers/gpu/drm/drm_mipi_dsi.c @@ -34,6 +34,7 @@ #include #include +#include #include #include @@ -386,6 +387,8 @@ int mipi_dsi_attach(struct mipi_dsi_device *dsi) dsi->attached = true; + drm_event_notifier_notify(DRM_MIPI_DSI_ATTACHED, dsi); + return 0; } EXPORT_SYMBOL(mipi_dsi_attach); -- 2.54.0