From nobody Sat Feb 7 06:35:34 2026 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (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 B54D32609CC for ; Fri, 23 Jan 2026 19:45:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769197537; cv=pass; b=ftyZM6SQCL0Yaxo9CAdTo0RC21039Z+AUnbG3sIK8rrfJLHFzQZu0TVs/zA34dwqbQMroqJhvha0spgsVhC4LeUWVGk2O/biv7RcYa3f8uOAu29OslYBcYiZlCx59GvdTAuoHw1Tf4Qop5uHPBAcC8hl3F+d95ou5XX5ULoPqgk= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769197537; c=relaxed/simple; bh=VSOWHO7qSoBhLMMDu1ZtirEYP6/lWMiNT1QvNkR3Xj0=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=RJmCSgaPPA7fRCHkrDa+ZatU3ezmNWPjw5rst3nnLc8+a/f6exBcKPpmzSJk8+wh5jWWjCqiJzClL0BWfiIEM+fdLNoOWPZu32w/dM9c4Z2V4xxOB7ku/PqUt++73p4EjgR4Gv4yq1kYYrJjrjSaAwv4hMQ3eDQ5udwmIJ9fKtg= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b=VYPsuIma; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=nicolas.frattaroli@collabora.com header.b="VYPsuIma" ARC-Seal: i=1; a=rsa-sha256; t=1769197510; cv=none; d=zohomail.com; s=zohoarc; b=enAVAkZDmsZx/cxX2A+I7dzwbG8zkdbtKZsssTKEX+WlrvNfcBevuhLzufWpiMcnungbLSVJkQAkb2NgjP5c3/b5I0CeHZ0Y3FB6ZjYwUlcq8aBW6Qc25LJmI5RukQiDzOPR7r7yQBaa1QSDYXi2caWHRsqYRSrUD1Kok0msSeU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1769197510; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=b5DrjrFd3ths/f83Nvi9aIkbTsYKWmh6t6bRYlmzwEk=; b=JLWQ7BRYjdYslcEhDvc4/jItdCQSrT7JEPPAxqzorWhamREgnR3e4MiF4y3lm0uP1+LmoIXXXdZcN4FmOf0ys2mwYBJSwoe9N6HyUbe0mGETaKqq9/r5Bqfq3A1KIfISbLnOqKgldfStcWe4F3ppj2eOSFjpw99A8ldTfbJHoDg= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=nicolas.frattaroli@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1769197510; s=zohomail; d=collabora.com; i=nicolas.frattaroli@collabora.com; h=From:From:Date:Date:Subject:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Message-Id:References:In-Reply-To:To:To:Cc:Cc:Reply-To; bh=b5DrjrFd3ths/f83Nvi9aIkbTsYKWmh6t6bRYlmzwEk=; b=VYPsuImapyFdTYNoUPpHJ3sn2Em9wjNgeaQgLC0jm29aE9hTV1TYe6wOsApzixfj hiH85VcTcIxy9OwTNWgIautuEaQoWJZOUMA4BBFc156MyC0+DYDgeX6TiONMnKMZc51 rtQgBnw+rPCvozEKJH5SE+ahlJ7SW1ZL3HNQHWBs= Received: by mx.zohomail.com with SMTPS id 1769197508504213.9494803911332; Fri, 23 Jan 2026 11:45:08 -0800 (PST) From: Nicolas Frattaroli Date: Fri, 23 Jan 2026 20:44:02 +0100 Subject: [PATCH v6 1/4] drm: Introduce pending_hp to drm_connector 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: quoted-printable Message-Id: <20260123-hot-plug-passup-v6-1-aaaf61d960bb@collabora.com> References: <20260123-hot-plug-passup-v6-0-aaaf61d960bb@collabora.com> In-Reply-To: <20260123-hot-plug-passup-v6-0-aaaf61d960bb@collabora.com> To: =?utf-8?q?Ville_Syrj=C3=A4l=C3=A4?= , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Louis Chauvet , Haneen Mohammed , Melissa Wen , Daniel Stone , Ian Forbes , Dmitry Baryshkov Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, kernel@collabora.com, Nicolas Frattaroli , Marius Vlad X-Mailer: b4 0.14.3 From: Marius Vlad Introduce a new boolean variable used to track whether a connector has changed its status since the last hotplug event for it was sent to userspace. It is used by both the polling and HPD path. A subsequent change will make use of this new member to propagate per-connector udev hotplug events to userspace, rather than sending a global hotplug event. Signed-off-by: Marius Vlad Signed-off-by: Nicolas Frattaroli --- drivers/gpu/drm/drm_connector.c | 1 + drivers/gpu/drm/drm_probe_helper.c | 17 +++++++++++++++++ drivers/gpu/drm/drm_sysfs.c | 2 ++ include/drm/drm_connector.h | 3 +++ 4 files changed, 23 insertions(+) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connecto= r.c index 4f5b27fab475..aa8a187578da 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -274,6 +274,7 @@ static int drm_connector_init_only(struct drm_device *d= ev, =20 /* provide ddc symlink in sysfs */ connector->ddc =3D ddc; + connector->pending_hp =3D false; =20 INIT_LIST_HEAD(&connector->head); INIT_LIST_HEAD(&connector->global_connector_list_entry); diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe= _helper.c index 09b12c30df69..91de34a25bf8 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -732,6 +732,17 @@ EXPORT_SYMBOL(drm_helper_probe_single_connector_modes); */ void drm_kms_helper_hotplug_event(struct drm_device *dev) { + struct drm_connector *connector; + struct drm_connector_list_iter conn_iter; + + mutex_lock(&dev->mode_config.mutex); + drm_connector_list_iter_begin(dev, &conn_iter); + drm_for_each_connector_iter(connector, &conn_iter) { + connector->pending_hp =3D false; + } + drm_connector_list_iter_end(&conn_iter); + mutex_unlock(&dev->mode_config.mutex); + drm_sysfs_hotplug_event(dev); drm_client_dev_hotplug(dev); } @@ -748,6 +759,10 @@ void drm_kms_helper_connector_hotplug_event(struct drm= _connector *connector) { struct drm_device *dev =3D connector->dev; =20 + mutex_lock(&dev->mode_config.mutex); + connector->pending_hp =3D false; + mutex_unlock(&dev->mode_config.mutex); + drm_sysfs_connector_hotplug_event(connector); drm_client_dev_hotplug(dev); } @@ -837,6 +852,7 @@ static void output_poll_execute(struct work_struct *wor= k) old_epoch_counter, connector->epoch_counter); =20 changed =3D true; + connector->pending_hp =3D true; } } drm_connector_list_iter_end(&conn_iter); @@ -1101,6 +1117,7 @@ bool drm_helper_hpd_irq_event(struct drm_device *dev) first_changed_connector =3D connector; } =20 + connector->pending_hp =3D true; changed++; } } diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c index b01ffa4d6509..53076c2afd12 100644 --- a/drivers/gpu/drm/drm_sysfs.c +++ b/drivers/gpu/drm/drm_sysfs.c @@ -216,6 +216,8 @@ static ssize_t status_store(struct device *device, connector->base.id, connector->name, old_force, connector->force); =20 + connector->pending_hp =3D true; + connector->funcs->fill_modes(connector, dev->mode_config.max_width, dev->mode_config.max_height); diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 7eaec37ae1c7..84968b2d967a 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -2191,6 +2191,9 @@ struct drm_connector { /** @force: a DRM_FORCE_ state for forced mode sets */ enum drm_connector_force force; =20 + /** @pending_hp: true if connector changed since last hotplug event */ + bool pending_hp; + /** * @edid_override: Override EDID set via debugfs. * --=20 2.52.0