usb: typec: tcpm: allow switching to mode accessory to mux properly

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>

diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c
index af7e18f6e930ffab64ac2b6d124098e7216d9ed7..c7680e10b6229d07d84d311854c3533479403053 100644 (file)
--- a/drivers/usb/typec/tcpm/tcpm.c
+++ b/drivers/usb/typec/tcpm/tcpm.c
@@ -1041,7 +1041,7 @@ static int tcpm_set_attached_state(struct tcpm_port *port, bool attached)
                                     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;
@@ -1078,7 +1078,7 @@ static int tcpm_set_roles(struct tcpm_port *port, bool attached,
                }
        }
 
-       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;
 
@@ -3622,7 +3622,8 @@ static int tcpm_src_attach(struct tcpm_port *port)
 
        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;
 
@@ -3780,7 +3781,8 @@ static int tcpm_snk_attach(struct tcpm_port *port)
 
        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;
 
@@ -3804,6 +3806,7 @@ static int tcpm_acc_attach(struct tcpm_port *port)
        int ret;
        enum typec_role role;
        enum typec_data_role data;
+       int state = TYPEC_STATE_USB;
 
        if (port->attached)
                return 0;
@@ -3812,7 +3815,13 @@ static int tcpm_acc_attach(struct tcpm_port *port)
        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;
 
@@ -4514,7 +4523,7 @@ static void run_state_machine(struct tcpm_port *port)
                 */
                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 +
@@ -4546,7 +4555,7 @@ static void run_state_machine(struct tcpm_port *port)
                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.
@@ -4652,10 +4661,10 @@ static void run_state_machine(struct tcpm_port *port)
        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);