Commit 2476de82 authored by Prashant Malani's avatar Prashant Malani Committed by Greg Kroah-Hartman
Browse files

usb: typec: Add retimer handle to port altmode 



Just like it does with muxes, the Type-C bus code can update the state
of connected retimers (especially when altmode-related transitions
occur). Add a retimer handle to the port altmode struct to enable this.

Signed-off-by: default avatarPrashant Malani <pmalani@chromium.org>
Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20230112221609.540754-2-pmalani@chromium.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a30951d3

drivers/usb/typec/bus.h

+2 −0
Original line number Diff line number Diff line
@@ -7,11 +7,13 @@ 


struct bus_type;

struct typec_mux;

struct typec_retimer;



struct altmode {

	unsigned int			id;

	struct typec_altmode		adev;

	struct typec_mux		*mux;

	struct typec_retimer		*retimer;



	enum typec_port_data		roles;

drivers/usb/typec/class.c

+13 −2
Original line number Diff line number Diff line
@@ -583,6 +583,7 @@ void typec_unregister_altmode(struct typec_altmode *adev) 
{

	if (IS_ERR_OR_NULL(adev))

		return;

	typec_retimer_put(to_altmode(adev)->retimer);

	typec_mux_put(to_altmode(adev)->mux);

	device_unregister(&adev->dev);

}
@@ -2108,16 +2109,26 @@ typec_port_register_altmode(struct typec_port *port, 
{

	struct typec_altmode *adev;

	struct typec_mux *mux;

	struct typec_retimer *retimer;



	mux = typec_mux_get(&port->dev, desc);

	if (IS_ERR(mux))

		return ERR_CAST(mux);



	retimer = typec_retimer_get(&port->dev);

	if (IS_ERR(retimer)) {

		typec_mux_put(mux);

		return ERR_CAST(retimer);

	}



	adev = typec_register_altmode(&port->dev, desc);

	if (IS_ERR(adev))

	if (IS_ERR(adev)) {

		typec_retimer_put(retimer);

		typec_mux_put(mux);

	else

	} else {

		to_altmode(adev)->mux = mux;

		to_altmode(adev)->retimer = retimer;

	}



	return adev;

}