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 B03114A2A5E for ; Thu, 1 Oct 2026 12:44:21 +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=1790858663; cv=none; b=M0JEpzfpmItsud07t8Iqw8sWQbEsAXC4DbUhz2vD6QYZqBrLdwv1Nifht4r7bLfF0kt6WTUKTmD25MPod8ls1Ogv2WrRJwiGpxPQNHGjztqB3u2HT34bjdznse8OtXzeMaeBmipIO5nEDQICbW4KWVJpd5O1+eAhtSel8ErRuQI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790858663; c=relaxed/simple; bh=ksWzs0Nqles4NrPLHoCXXwgwiYjoKXHReGcRvbjtsPI=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=YeiBfDwSfNgwa/t0yDxuZ/Gcv+k1Q7XLqIXbqTsUFO9W/Rsxaa6P8e4sSIjQhE3enh2kWoXh+O+OxXFjVAyn6R9jkwN2HOIyNw9vyONM6SEmoLY+b4hxo1x+AMCu6uN74TxhaiCAtUlERiIgeaTRHE2cq/q0nVsjls82YyJOc0I= 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=aBPKzM7g; 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="aBPKzM7g" Received: from smtpout-01.galae.net (smtpout-01.galae.net [212.83.139.233]) by smtpout-02.galae.net (Postfix) with ESMTPS id 72BB91A24DD; Thu, 1 Oct 2026 12:44:20 +0000 (UTC) Received: from mail.galae.net (mail.galae.net [212.83.136.155]) by smtpout-01.galae.net (Postfix) with ESMTPS id 42C2560341; Thu, 1 Oct 2026 12:44:20 +0000 (UTC) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id E3F3E103280C2; Thu, 1 Oct 2026 14:44:09 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=dkim; t=1790858654; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=WapcN4u4O2P2Y+ZdWXKtu9oaGnwPkCOTy0BexZllVJ4=; b=aBPKzM7g8VsMMRJ6dD92iJu+e9xBuoG91dnx+NjfTvZY4daWydYrbRK3OEY1q2sDB8QgLa bMJe5HarR/RyCZMGwGHePJNbBtVgZbqbsr+VU6pbFQ+fS7r9igQAIxQcAJKk4wAwytNe9q vYdW06HwfKqcGXQK8QX7c9zI0ARqj5jAN7xB9A0TEVnZo/d0gjyE+SEdcsxbDTedFjZKRP MRhHWm+SOCwcCja8bGdxTXnD0KnhwoaWrKKPjwBqlrFIOmcnfTGiB/zcktScPT/eNFNvsa imua9heDWQ+eXKqQLPyxmUrh/I2K6crsDT0gdIef3pDU88Wf2KxQrAkc3lvnjw== From: Luca Ceresoli Date: Thu, 01 Oct 2026 14:42:38 +0200 Subject: [PATCH RFC v2 16/24] drm/mipi-dsi: notify about DSI attach 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-v2-16-8e34986dcb68@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 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 17c86244c75a..59015e89de92 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); -- 2.55.0