[PATCH 6.15 88/92] usb: typec: tcpm: allow switching to mode accessory to mux properly

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

6.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Grzeschik <m.grzeschik@pengutronix.de>

commit 8a50da849151e7e12b43c1d8fe7ad302223aef6b upstream.

The funciton tcpm_acc_attach is not setting the proper state when
calling tcpm_set_role. The function tcpm_set_role is currently only
handling TYPEC_STATE_USB. For the tcpm_acc_attach to switch into other
modal states tcpm_set_role needs to be extended by an extra state
parameter. This patch is handling the proper state change when calling
tcpm_acc_attach.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20250404-ml-topic-tcpm-v1-3-b99f44badce8@pengutronix.de
Stable-dep-of: bec15191d523 ("usb: typec: tcpm: apply vbus before data bringup in tcpm_src_attach")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/usb/typec/tcpm/tcpm.c |   27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -1160,7 +1160,7 @@ static int tcpm_set_attached_state(struc
 				     port->data_role);
 }
 
-static int tcpm_set_roles(struct tcpm_port *port, bool attached,
+static int tcpm_set_roles(struct tcpm_port *port, bool attached, int state,
 			  enum typec_role role, enum typec_data_role data)
 {
 	enum typec_orientation orientation;
@@ -1197,7 +1197,7 @@ static int tcpm_set_roles(struct tcpm_po
 		}
 	}
 
-	ret = tcpm_mux_set(port, TYPEC_STATE_USB, usb_role, orientation);
+	ret = tcpm_mux_set(port, state, usb_role, orientation);
 	if (ret < 0)
 		return ret;
 
@@ -4404,7 +4404,8 @@ static int tcpm_src_attach(struct tcpm_p
 
 	tcpm_enable_auto_vbus_discharge(port, true);
 
-	ret = tcpm_set_roles(port, true, TYPEC_SOURCE, tcpm_data_role_for_source(port));
+	ret = tcpm_set_roles(port, true, TYPEC_STATE_USB,
+			     TYPEC_SOURCE, tcpm_data_role_for_source(port));
 	if (ret < 0)
 		return ret;
 
@@ -4579,7 +4580,8 @@ static int tcpm_snk_attach(struct tcpm_p
 
 	tcpm_enable_auto_vbus_discharge(port, true);
 
-	ret = tcpm_set_roles(port, true, TYPEC_SINK, tcpm_data_role_for_sink(port));
+	ret = tcpm_set_roles(port, true, TYPEC_STATE_USB,
+			     TYPEC_SINK, tcpm_data_role_for_sink(port));
 	if (ret < 0)
 		return ret;
 
@@ -4604,6 +4606,7 @@ static int tcpm_acc_attach(struct tcpm_p
 	int ret;
 	enum typec_role role;
 	enum typec_data_role data;
+	int state = TYPEC_STATE_USB;
 
 	if (port->attached)
 		return 0;
@@ -4612,7 +4615,13 @@ static int tcpm_acc_attach(struct tcpm_p
 	data = tcpm_port_is_sink(port) ? tcpm_data_role_for_sink(port)
 				       : tcpm_data_role_for_source(port);
 
-	ret = tcpm_set_roles(port, true, role, data);
+	if (tcpm_port_is_audio(port))
+		state = TYPEC_MODE_AUDIO;
+
+	if (tcpm_port_is_debug(port))
+		state = TYPEC_MODE_DEBUG;
+
+	ret = tcpm_set_roles(port, true, state, role, data);
 	if (ret < 0)
 		return ret;
 
@@ -5382,7 +5391,7 @@ static void run_state_machine(struct tcp
 		 */
 		tcpm_set_vconn(port, false);
 		tcpm_set_vbus(port, false);
-		tcpm_set_roles(port, port->self_powered, TYPEC_SOURCE,
+		tcpm_set_roles(port, port->self_powered, TYPEC_STATE_USB, TYPEC_SOURCE,
 			       tcpm_data_role_for_source(port));
 		/*
 		 * If tcpc fails to notify vbus off, TCPM will wait for PD_T_SAFE_0V +
@@ -5414,7 +5423,7 @@ static void run_state_machine(struct tcp
 		tcpm_set_vconn(port, false);
 		if (port->pd_capable)
 			tcpm_set_charge(port, false);
-		tcpm_set_roles(port, port->self_powered, TYPEC_SINK,
+		tcpm_set_roles(port, port->self_powered, TYPEC_STATE_USB, TYPEC_SINK,
 			       tcpm_data_role_for_sink(port));
 		/*
 		 * VBUS may or may not toggle, depending on the adapter.
@@ -5538,10 +5547,10 @@ static void run_state_machine(struct tcp
 	case DR_SWAP_CHANGE_DR:
 		tcpm_unregister_altmodes(port);
 		if (port->data_role == TYPEC_HOST)
-			tcpm_set_roles(port, true, port->pwr_role,
+			tcpm_set_roles(port, true, TYPEC_STATE_USB, port->pwr_role,
 				       TYPEC_DEVICE);
 		else
-			tcpm_set_roles(port, true, port->pwr_role,
+			tcpm_set_roles(port, true, TYPEC_STATE_USB, port->pwr_role,
 				       TYPEC_HOST);
 		tcpm_ams_finish(port);
 		tcpm_set_state(port, ready_state(port), 0);