From: Luca Ceresoli <luca.ceresoli@bootlin•com>
To: Maarten Lankhorst <maarten.lankhorst@linux•intel.com>,
Maxime Ripard <mripard@kernel•org>,
Thomas Zimmermann <tzimmermann@suse•de>,
David Airlie <airlied@gmail•com>,
Simona Vetter <simona@ffwll•ch>,
Andrzej Hajda <andrzej.hajda@intel•com>,
Neil Armstrong <neil.armstrong@linaro•org>,
Robert Foss <rfoss@kernel•org>,
Laurent Pinchart <Laurent.pinchart@ideasonboard•com>,
Jonas Karlman <jonas@kwiboo•se>,
Jernej Skrabec <jernej.skrabec@gmail•com>,
Inki Dae <inki.dae@samsung•com>,
Jagan Teki <jagan@amarulasolutions•com>,
Marek Szyprowski <m.szyprowski@samsung•com>,
Marek Vasut <marex@denx•de>, Stefan Agner <stefan@agner•ch>,
Frank Li <Frank.Li@nxp•com>,
Sascha Hauer <s.hauer@pengutronix•de>,
Pengutronix Kernel Team <kernel@pengutronix•de>,
Fabio Estevam <festevam@gmail•com>
Cc: Hui Pu <Hui.Pu@gehealthcare•com>,
Ian Ray <ian.ray@gehealthcare•com>,
Thomas Petazzoni <thomas.petazzoni@bootlin•com>,
dri-devel@lists•freedesktop.org, linux-kernel@vger•kernel.org,
imx@lists•linux.dev, linux-arm-kernel@lists•infradead.org,
Luca Ceresoli <luca.ceresoli@bootlin•com>
Subject: [PATCH 04/37] drm/display: bridge-connector: store the drm_device pointer
Date: Tue, 19 May 2026 12:37:21 +0200 [thread overview]
Message-ID: <20260519-drm-bridge-hotplug-v1-4-45e2bdb3dfb4@bootlin.com> (raw)
In-Reply-To: <20260519-drm-bridge-hotplug-v1-0-45e2bdb3dfb4@bootlin.com>
Currently the struct drm_device pointer is only needed during the initial
drm_bridge_connector_init() and in drm_bridge_connector_handle_hpd() which
gets it from the struct drm_connector.
This will be insufficient when introducing bridge hotplugging, because:
* some of the actions in drm_bridge_connector_init() will have to be
performed later on, when a bridge is hot(un)plugged
* the connector will be removed and re-added based on hotplug events,
so the drm_connector might just not exist or its content be cleared
Store the drm_device pointer in struct drm_bridge_connector for any later
needs. Also convert drm_bridge_connector_handle_hpd() to use the newly
stored value.
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin•com>
---
drivers/gpu/drm/display/drm_bridge_connector.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/display/drm_bridge_connector.c b/drivers/gpu/drm/display/drm_bridge_connector.c
index bf9b8a6bca78..62c4cb1e241f 100644
--- a/drivers/gpu/drm/display/drm_bridge_connector.c
+++ b/drivers/gpu/drm/display/drm_bridge_connector.c
@@ -60,6 +60,10 @@ struct drm_bridge_connector {
* @base: The base DRM connector
*/
struct drm_connector base;
+ /**
+ * @drm: The DRM device we belong to
+ */
+ struct drm_device *drm;
/**
* @encoder:
*
@@ -157,7 +161,7 @@ static void drm_bridge_connector_handle_hpd(struct drm_bridge_connector *bridge_
enum drm_connector_status status)
{
struct drm_connector *connector = &bridge_connector->base;
- struct drm_device *dev = connector->dev;
+ struct drm_device *dev = bridge_connector->drm;
mutex_lock(&dev->mode_config.mutex);
connector->status = status;
@@ -806,6 +810,7 @@ struct drm_connector *drm_bridge_connector_init(struct drm_device *drm,
if (ret)
return ERR_PTR(ret);
+ bridge_connector->drm = drm;
bridge_connector->encoder = encoder;
/*
--
2.54.0
next prev parent reply other threads:[~2026-05-19 10:38 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-19 10:37 [PATCH 00/37] drm bridge hotplug Luca Ceresoli
2026-05-19 10:37 ` [PATCH 01/37] drm/connector: split drmm_connector_hdmi_init() in 3 parts Luca Ceresoli
2026-05-19 10:37 ` [PATCH 02/37] drm/connector: add drm_connector_hdmi_dynamic_init() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 03/37] drm/display: bridge-connector: rename variable for consistency Luca Ceresoli
2026-05-19 10:37 ` Luca Ceresoli [this message]
2026-05-19 10:37 ` [PATCH 05/37] drm/display: bridge-connector: split code creating the connector to a subfunction Luca Ceresoli
2026-05-19 10:37 ` [PATCH 06/37] drm/display: bridge-connector: use a drm_bridge_connector internally, not a drm_connector Luca Ceresoli
2026-05-19 10:37 ` [PATCH 07/37] drm/display: bridge-connector: extract drm_bridge_connector_get_bridges() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 08/37] drm/display: bridge-connector: return int from drm_bridge_connector_get_bridges() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 09/37] drm/display: bridge-connector: extract drm_bridge_connector_init_hdmi_audio_cec() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 10/37] drm/display: bridge-connector: return int from drm_bridge_connector_init_hdmi_audio_cec() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 11/37] drm/display: bridge-connector: return int from drm_bridge_connector_add_connector() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 12/37] drm/display: bridge-connector: hoist error management to common code Luca Ceresoli
2026-05-19 10:37 ` [PATCH 13/37] drm/display: bridge-connector: move drm_bridge_connector_put_bridges() definition eariler Luca Ceresoli
2026-05-19 10:37 ` [PATCH 14/37] drm/display: bridge-connector: add non-drmm variant of drm_bridge_connector_put_bridges() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 15/37] drm/display: bridge-connector: allocate the connector dynamically Luca Ceresoli
2026-05-19 10:37 ` [PATCH 16/37] drm/display: bridge-connector: move per-connector fields to the dynamic connector Luca Ceresoli
2026-05-19 10:37 ` [PATCH 17/37] drm/display: bridge-connector: protect dynconn creation and destruction with a mutex Luca Ceresoli
2026-05-19 10:37 ` [PATCH 18/37] drm/bridge: samsung-dsim: remove the panel_bridge on host_detach Luca Ceresoli
2026-05-19 10:37 ` [PATCH 19/37] drm/bridge: samsung-dsim: move drm_bridge_add() call to probe Luca Ceresoli
2026-05-19 10:37 ` [PATCH 20/37] drm/bridge: samsung-dsim: attach: return -EPROBE_DEFER is next bridge not yet available Luca Ceresoli
2026-05-19 10:37 ` [PATCH 21/37] drm/bridge: initialize chain_node list head on allocation Luca Ceresoli
2026-05-19 10:37 ` [PATCH 22/37] drm/bridge: initialize chain_node list head on detach and attach errors Luca Ceresoli
2026-05-19 10:37 ` [PATCH 23/37] drm/encoder: add drm_encoder_cleanup_from() Luca Ceresoli
2026-05-19 10:37 ` [PATCH 24/37] drm/atomic: move drm_atomic_helper_disable_all() and drm_atomic_helper_shutdown() from drm_atomic_helper to drm_atomic Luca Ceresoli
2026-05-19 10:37 ` [PATCH 25/37] drm/bridge: shutdown and cleanup on bridge unplug Luca Ceresoli
2026-05-19 10:37 ` [PATCH 26/37] drm: event-notifier: add mechanism to notify about hotplug events Luca Ceresoli
2026-05-19 10:37 ` [PATCH 27/37] drm/bridge: notify about detached bridges Luca Ceresoli
2026-05-19 10:37 ` [PATCH 28/37] drm/mipi-dsi: turn DRM_MIPI_DSI into a tristate Luca Ceresoli
2026-05-19 10:37 ` [PATCH 29/37] drm/mipi-dsi: notify about DSI attach Luca Ceresoli
2026-05-19 10:37 ` [PATCH 30/37] drm/bridge: add drm_bridge_is_tail() to know whether a bridge completes the pipeline Luca Ceresoli
2026-05-19 10:37 ` [PATCH 31/37] drm/bridge: panel: implement .is_tail Luca Ceresoli
2026-05-19 15:12 ` Neil Armstrong
2026-05-19 10:37 ` [PATCH 32/37] drm/bridge: display-connector: " Luca Ceresoli
2026-05-19 10:37 ` [PATCH 33/37] drm/bridge: samsung-dsim: " Luca Ceresoli
2026-05-19 10:37 ` [PATCH 34/37] drm/bridge: ti-sn65dsi83: " Luca Ceresoli
2026-05-19 10:37 ` [PATCH 35/37] drm/bridge: drm_bridge_attach(): don't fail on -EPROBE_DEFER Luca Ceresoli
2026-05-19 10:37 ` [PATCH 36/37] drm/display: bridge-connector: handle bridge hotplug Luca Ceresoli
2026-05-19 10:37 ` [PATCH 37/37] drm/mxsfb/lcdif: enable " Luca Ceresoli
2026-06-01 15:44 ` [PATCH 00/37] drm " Luca Ceresoli
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260519-drm-bridge-hotplug-v1-4-45e2bdb3dfb4@bootlin.com \
--to=luca.ceresoli@bootlin$(echo .)com \
--cc=Frank.Li@nxp$(echo .)com \
--cc=Hui.Pu@gehealthcare$(echo .)com \
--cc=Laurent.pinchart@ideasonboard$(echo .)com \
--cc=airlied@gmail$(echo .)com \
--cc=andrzej.hajda@intel$(echo .)com \
--cc=dri-devel@lists$(echo .)freedesktop.org \
--cc=festevam@gmail$(echo .)com \
--cc=ian.ray@gehealthcare$(echo .)com \
--cc=imx@lists$(echo .)linux.dev \
--cc=inki.dae@samsung$(echo .)com \
--cc=jagan@amarulasolutions$(echo .)com \
--cc=jernej.skrabec@gmail$(echo .)com \
--cc=jonas@kwiboo$(echo .)se \
--cc=kernel@pengutronix$(echo .)de \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=m.szyprowski@samsung$(echo .)com \
--cc=maarten.lankhorst@linux$(echo .)intel.com \
--cc=marex@denx$(echo .)de \
--cc=mripard@kernel$(echo .)org \
--cc=neil.armstrong@linaro$(echo .)org \
--cc=rfoss@kernel$(echo .)org \
--cc=s.hauer@pengutronix$(echo .)de \
--cc=simona@ffwll$(echo .)ch \
--cc=stefan@agner$(echo .)ch \
--cc=thomas.petazzoni@bootlin$(echo .)com \
--cc=tzimmermann@suse$(echo .)de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox