Add the Type C bus for plug alternate modes which are being registered via the Type C connector class. This ensures that udev events get generated when plug alternate modes are registered (and not just for partner/port alternate modes), even though the Type C bus doesn't link plug alternate mode devices to alternate mode drivers. Update the Type C bus documentation to mention that there are alternate mode devices for plugs as well. Signed-off-by: Prashant Malani <pmalani@xxxxxxxxxxxx> Cc: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx> --- Documentation/driver-api/usb/typec_bus.rst | 6 +++--- drivers/usb/typec/class.c | 8 ++++++-- 2 files changed, 9 insertions(+), 5 deletions(-) diff --git a/Documentation/driver-api/usb/typec_bus.rst b/Documentation/driver-api/usb/typec_bus.rst index 21c890ae17e5..7874d2f37d9f 100644 --- a/Documentation/driver-api/usb/typec_bus.rst +++ b/Documentation/driver-api/usb/typec_bus.rst @@ -15,9 +15,9 @@ modes by using the SVID and the mode number. :ref:`USB Type-C Connector Class <typec>` provides a device for every alternate mode a port supports, and separate device for every alternate mode the partner -supports. The drivers for the alternate modes are bound to the partner alternate -mode devices, and the port alternate mode devices must be handled by the port -drivers. +or cable plug supports. The drivers for the alternate modes are bound to the +partner alternate mode devices, and the port alternate mode devices must be +handled by the port drivers. When a new partner alternate mode device is registered, it is linked to the alternate mode device of the port that the partner is attached to, that has diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 35eec707cb51..74061a699f16 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -478,8 +478,12 @@ typec_register_altmode(struct device *parent, if (!is_port) typec_altmode_set_partner(alt); - /* The partners are bind to drivers */ - if (is_typec_partner(parent)) + /* + * The partners are bind to drivers. + * Also set the bus field for plug alt modes so that the udev event occurs on device + * registration. + */ + if (is_typec_partner(parent) || is_typec_plug(parent)) alt->adev.dev.bus = &typec_bus; ret = device_register(&alt->adev.dev); -- 2.29.2.454.gaff20da3a2-goog
