We register devices for OTG controllers only to associate a .mode device
parameter with them. Follow-up commits will need to refer to previously
registered OTG controllers, so let's register a bus type for them and
use it to maintain a list of controllers.
Signed-off-by: Ahmad Fatoum <a.fatoum@xxxxxxxxxxxxxx>
---
drivers/usb/otg/otgdev.c | 11 +++++++++++
include/linux/usb/usb.h | 2 ++
2 files changed, 13 insertions(+)
diff --git a/drivers/usb/otg/otgdev.c b/drivers/usb/otg/otgdev.c
index d0a1cecc85cf..e035c988af2d 100644
--- a/drivers/usb/otg/otgdev.c
+++ b/drivers/usb/otg/otgdev.c
@@ -63,6 +63,10 @@ static struct device otg_device = {
.id = DEVICE_ID_SINGLE,
};
+struct bus_type otg_bus_type = {
+ .name = "usbotg" /* "otg" is already taken for the alias */
+};
+
int usb_register_otg_device(struct device *parent,
int (*set_mode)(void *ctx, enum usb_dr_mode mode), void *ctx)
{
@@ -72,6 +76,7 @@ int usb_register_otg_device(struct device *parent,
otg = xzalloc(sizeof(*otg));
otg->dev.priv = otg;
otg->dev.parent = parent;
+ otg->dev.bus = &otg_bus_type;
otg->dev.id = DEVICE_ID_DYNAMIC;
dev_set_name(&otg->dev, "otg");
@@ -90,3 +95,9 @@ int usb_register_otg_device(struct device *parent,
return register_otg_device(&otg->dev, otg);
}
+
+static int otg_bus_init(void)
+{
+ return bus_register(&otg_bus_type);
+}
+pure_initcall(otg_bus_init);
diff --git a/include/linux/usb/usb.h b/include/linux/usb/usb.h
index ffeceec88f9e..a611d19b4a17 100644
--- a/include/linux/usb/usb.h
+++ b/include/linux/usb/usb.h
@@ -480,6 +480,8 @@ enum usb_device_speed of_usb_get_maximum_speed(struct device_node *np,
int usb_register_otg_device(struct device *parent,
int (*set_mode)(void *ctx, enum usb_dr_mode mode), void *ctx);
+extern struct bus_type otg_bus_type;
+
extern struct list_head usb_device_list;
bool usb_hub_is_root_hub(struct usb_device *hdev);
--
2.39.2
