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Message-Id: <20251128020405.90-3-kernel@airkyi.com>
Date: Fri, 28 Nov 2025 10:03:56 +0800
From: Chaoyi Chen <kernel@...kyi.com>
To: Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
Peter Chen <hzpeterchen@...il.com>,
Luca Ceresoli <luca.ceresoli@...tlin.com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
Heiko Stuebner <heiko@...ech.de>,
Sandy Huang <hjc@...k-chips.com>,
Andy Yan <andy.yan@...k-chips.com>,
Yubing Zhang <yubing.zhang@...k-chips.com>,
Frank Wang <frank.wang@...k-chips.com>,
Andrzej Hajda <andrzej.hajda@...el.com>,
Neil Armstrong <neil.armstrong@...aro.org>,
Robert Foss <rfoss@...nel.org>,
Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
Jonas Karlman <jonas@...boo.se>,
Jernej Skrabec <jernej.skrabec@...il.com>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Zimmermann <tzimmermann@...e.de>,
David Airlie <airlied@...il.com>,
Simona Vetter <simona@...ll.ch>,
Amit Sunil Dhamne <amitsd@...gle.com>,
Chaoyi Chen <chaoyi.chen@...k-chips.com>,
Dragan Simic <dsimic@...jaro.org>,
Johan Jonker <jbx6244@...il.com>,
Diederik de Haas <didi.debian@...ow.org>,
Peter Robinson <pbrobinson@...il.com>
Cc: linux-usb@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-phy@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org,
dri-devel@...ts.freedesktop.org
Subject: [PATCH v11 02/11] usb: typec: Export typec bus and typec altmode device type
From: Chaoyi Chen <chaoyi.chen@...k-chips.com>
The DRM may want to register a notifier on the typec bus to know when
a typec altmode device is added, and distinguish between different
types of typec altmode device.
Export these things.
Signed-off-by: Chaoyi Chen <chaoyi.chen@...k-chips.com>
---
Changes in v11:
- Also export typec bus.
- Add more detailed comments.
(no changes since v9)
drivers/usb/typec/bus.c | 1 +
drivers/usb/typec/bus.h | 10 ----------
drivers/usb/typec/class.c | 3 +++
include/linux/usb/typec.h | 3 +++
include/linux/usb/typec_altmode.h | 8 ++++++++
5 files changed, 15 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/typec/bus.c b/drivers/usb/typec/bus.c
index a33da7f458a5..e84b134a3381 100644
--- a/drivers/usb/typec/bus.c
+++ b/drivers/usb/typec/bus.c
@@ -569,3 +569,4 @@ const struct bus_type typec_bus = {
.probe = typec_probe,
.remove = typec_remove,
};
+EXPORT_SYMBOL_GPL(typec_bus);
diff --git a/drivers/usb/typec/bus.h b/drivers/usb/typec/bus.h
index b58e131450d1..7df5deb1dd3a 100644
--- a/drivers/usb/typec/bus.h
+++ b/drivers/usb/typec/bus.h
@@ -5,7 +5,6 @@
#include <linux/usb/typec_altmode.h>
-struct bus_type;
struct typec_mux;
struct typec_retimer;
@@ -28,13 +27,4 @@ struct altmode {
#define to_altmode(d) container_of(d, struct altmode, adev)
-extern const struct bus_type typec_bus;
-extern const struct device_type typec_port_altmode_dev_type;
-extern const struct device_type typec_plug_altmode_dev_type;
-extern const struct device_type typec_partner_altmode_dev_type;
-
-#define is_typec_port_altmode(dev) ((dev)->type == &typec_port_altmode_dev_type)
-#define is_typec_plug_altmode(dev) ((dev)->type == &typec_plug_altmode_dev_type)
-#define is_typec_partner_altmode(dev) ((dev)->type == &typec_partner_altmode_dev_type)
-
#endif /* __USB_TYPEC_ALTMODE_H__ */
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index d6b88317f8a4..c4ff4310ff58 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -537,18 +537,21 @@ const struct device_type typec_port_altmode_dev_type = {
.groups = typec_altmode_groups,
.release = typec_altmode_release,
};
+EXPORT_SYMBOL_GPL(typec_port_altmode_dev_type);
const struct device_type typec_plug_altmode_dev_type = {
.name = "typec_plug_alternate_mode",
.groups = typec_altmode_groups,
.release = typec_altmode_release,
};
+EXPORT_SYMBOL_GPL(typec_plug_altmode_dev_type);
const struct device_type typec_partner_altmode_dev_type = {
.name = "typec_partner_alternate_mode",
.groups = typec_altmode_groups,
.release = typec_altmode_release,
};
+EXPORT_SYMBOL_GPL(typec_partner_altmode_dev_type);
static struct typec_altmode *
typec_register_altmode(struct device *parent,
diff --git a/include/linux/usb/typec.h b/include/linux/usb/typec.h
index 309251572e2e..c6fd46902fce 100644
--- a/include/linux/usb/typec.h
+++ b/include/linux/usb/typec.h
@@ -20,12 +20,15 @@ struct typec_port;
struct typec_altmode_ops;
struct typec_cable_ops;
+struct bus_type;
struct fwnode_handle;
struct device;
struct usb_power_delivery;
struct usb_power_delivery_desc;
+extern const struct bus_type typec_bus;
+
enum typec_port_type {
TYPEC_PORT_SRC,
TYPEC_PORT_SNK,
diff --git a/include/linux/usb/typec_altmode.h b/include/linux/usb/typec_altmode.h
index f7db3bd4c90e..9197a4637a93 100644
--- a/include/linux/usb/typec_altmode.h
+++ b/include/linux/usb/typec_altmode.h
@@ -9,6 +9,14 @@
#define MODE_DISCOVERY_MAX 6
+extern const struct device_type typec_port_altmode_dev_type;
+extern const struct device_type typec_plug_altmode_dev_type;
+extern const struct device_type typec_partner_altmode_dev_type;
+
+#define is_typec_port_altmode(dev) ((dev)->type == &typec_port_altmode_dev_type)
+#define is_typec_plug_altmode(dev) ((dev)->type == &typec_plug_altmode_dev_type)
+#define is_typec_partner_altmode(dev) ((dev)->type == &typec_partner_altmode_dev_type)
+
struct typec_altmode_ops;
/**
--
2.51.1
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