diff options
author | Heikki Krogerus <heikki.krogerus@linux.intel.com> | 2022-05-02 16:20:58 +0300 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-06-12 06:49:47 +0200 |
commit | 8203d26905eee083fbe76ec449f32953aa729193 (patch) | |
tree | 470af4e97340b1b733b8c63d96922dfd2275af78 /drivers/usb/typec | |
parent | a7cff92f0635c794e2198a69a7ff4ecfe0decab9 (diff) | |
download | linux-8203d26905eee083fbe76ec449f32953aa729193.tar.bz2 |
usb: typec: tcpm: Register USB Power Delivery Capabilities
Register both the port and partner USB Power Delivery
Capabilities so they are exposed to the user space.
Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20220502132058.86236-4-heikki.krogerus@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/typec')
-rw-r--r-- | drivers/usb/typec/tcpm/tcpm.c | 142 |
1 files changed, 141 insertions, 1 deletions
diff --git a/drivers/usb/typec/tcpm/tcpm.c b/drivers/usb/typec/tcpm/tcpm.c index 7039383eac6d..e1126a6c8e46 100644 --- a/drivers/usb/typec/tcpm/tcpm.c +++ b/drivers/usb/typec/tcpm/tcpm.c @@ -394,6 +394,14 @@ struct tcpm_port { bool explicit_contract; unsigned int rx_msgid; + /* USB PD objects */ + struct usb_power_delivery *pd; + struct usb_power_delivery_capabilities *port_source_caps; + struct usb_power_delivery_capabilities *port_sink_caps; + struct usb_power_delivery *partner_pd; + struct usb_power_delivery_capabilities *partner_source_caps; + struct usb_power_delivery_capabilities *partner_sink_caps; + /* Partner capabilities/requests */ u32 sink_request; u32 source_caps[PDO_MAX_OBJECTS]; @@ -2352,6 +2360,52 @@ static void tcpm_pd_handle_msg(struct tcpm_port *port, } } +static int tcpm_register_source_caps(struct tcpm_port *port) +{ + struct usb_power_delivery_desc desc = { port->negotiated_rev }; + struct usb_power_delivery_capabilities_desc caps = { }; + struct usb_power_delivery_capabilities *cap; + + if (!port->partner_pd) + port->partner_pd = usb_power_delivery_register(NULL, &desc); + if (IS_ERR(port->partner_pd)) + return PTR_ERR(port->partner_pd); + + memcpy(caps.pdo, port->source_caps, sizeof(u32) * port->nr_source_caps); + caps.role = TYPEC_SOURCE; + + cap = usb_power_delivery_register_capabilities(port->partner_pd, &caps); + if (IS_ERR(cap)) + return PTR_ERR(cap); + + port->partner_source_caps = cap; + + return 0; +} + +static int tcpm_register_sink_caps(struct tcpm_port *port) +{ + struct usb_power_delivery_desc desc = { port->negotiated_rev }; + struct usb_power_delivery_capabilities_desc caps = { }; + struct usb_power_delivery_capabilities *cap; + + if (!port->partner_pd) + port->partner_pd = usb_power_delivery_register(NULL, &desc); + if (IS_ERR(port->partner_pd)) + return PTR_ERR(port->partner_pd); + + memcpy(caps.pdo, port->sink_caps, sizeof(u32) * port->nr_sink_caps); + caps.role = TYPEC_SINK; + + cap = usb_power_delivery_register_capabilities(port->partner_pd, &caps); + if (IS_ERR(cap)) + return PTR_ERR(cap); + + port->partner_sink_caps = cap; + + return 0; +} + static void tcpm_pd_data_request(struct tcpm_port *port, const struct pd_message *msg) { @@ -2381,6 +2435,8 @@ static void tcpm_pd_data_request(struct tcpm_port *port, tcpm_validate_caps(port, port->source_caps, port->nr_source_caps); + tcpm_register_source_caps(port); + /* * Adjust revision in subsequent message headers, as required, * to comply with 6.2.1.1.5 of the USB PD 3.0 spec. We don't @@ -2488,6 +2544,8 @@ static void tcpm_pd_data_request(struct tcpm_port *port, port->nr_sink_caps = cnt; port->sink_cap_done = true; + tcpm_register_sink_caps(port); + if (port->ams == GET_SINK_CAPABILITIES) tcpm_set_state(port, ready_state(port), 0); /* Unexpected Sink Capabilities */ @@ -3554,6 +3612,7 @@ static void tcpm_typec_connect(struct tcpm_port *port) port->partner = typec_register_partner(port->typec_port, &port->partner_desc); port->connected = true; + typec_partner_set_usb_power_delivery(port->partner, port->partner_pd); } } @@ -3622,6 +3681,7 @@ out_disable_mux: static void tcpm_typec_disconnect(struct tcpm_port *port) { if (port->connected) { + typec_partner_set_usb_power_delivery(port->partner, NULL); typec_unregister_partner(port->partner); port->partner = NULL; port->connected = false; @@ -3684,6 +3744,13 @@ static void tcpm_reset_port(struct tcpm_port *port) port->sink_cap_done = false; if (port->tcpc->enable_frs) port->tcpc->enable_frs(port->tcpc, false); + + usb_power_delivery_unregister_capabilities(port->partner_sink_caps); + port->partner_sink_caps = NULL; + usb_power_delivery_unregister_capabilities(port->partner_source_caps); + port->partner_source_caps = NULL; + usb_power_delivery_unregister(port->partner_pd); + port->partner_pd = NULL; } static void tcpm_detach(struct tcpm_port *port) @@ -5924,6 +5991,68 @@ void tcpm_tcpc_reset(struct tcpm_port *port) } EXPORT_SYMBOL_GPL(tcpm_tcpc_reset); +static void tcpm_port_unregister_pd(struct tcpm_port *port) +{ + usb_power_delivery_unregister_capabilities(port->port_sink_caps); + port->port_sink_caps = NULL; + usb_power_delivery_unregister_capabilities(port->port_source_caps); + port->port_source_caps = NULL; + usb_power_delivery_unregister(port->pd); + port->pd = NULL; +} + +static int tcpm_port_register_pd(struct tcpm_port *port) +{ + struct usb_power_delivery_desc desc = { port->typec_caps.pd_revision }; + struct usb_power_delivery_capabilities_desc caps = { }; + struct usb_power_delivery_capabilities *cap; + int ret; + + if (!port->nr_src_pdo && !port->nr_snk_pdo) + return 0; + + port->pd = usb_power_delivery_register(port->dev, &desc); + if (IS_ERR(port->pd)) { + ret = PTR_ERR(port->pd); + goto err_unregister; + } + + if (port->nr_src_pdo) { + memcpy_and_pad(caps.pdo, sizeof(caps.pdo), port->src_pdo, + port->nr_src_pdo * sizeof(u32), 0); + caps.role = TYPEC_SOURCE; + + cap = usb_power_delivery_register_capabilities(port->pd, &caps); + if (IS_ERR(cap)) { + ret = PTR_ERR(cap); + goto err_unregister; + } + + port->port_source_caps = cap; + } + + if (port->nr_snk_pdo) { + memcpy_and_pad(caps.pdo, sizeof(caps.pdo), port->snk_pdo, + port->nr_snk_pdo * sizeof(u32), 0); + caps.role = TYPEC_SINK; + + cap = usb_power_delivery_register_capabilities(port->pd, &caps); + if (IS_ERR(cap)) { + ret = PTR_ERR(cap); + goto err_unregister; + } + + port->port_sink_caps = cap; + } + + return 0; + +err_unregister: + tcpm_port_unregister_pd(port); + + return ret; +} + static int tcpm_fw_get_caps(struct tcpm_port *port, struct fwnode_handle *fwnode) { @@ -6382,10 +6511,16 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) goto out_role_sw_put; power_supply_changed(port->psy); + err = tcpm_port_register_pd(port); + if (err) + goto out_role_sw_put; + + port->typec_caps.pd = port->pd; + port->typec_port = typec_register_port(port->dev, &port->typec_caps); if (IS_ERR(port->typec_port)) { err = PTR_ERR(port->typec_port); - goto out_role_sw_put; + goto out_unregister_pd; } typec_port_register_altmodes(port->typec_port, @@ -6400,6 +6535,8 @@ struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) tcpm_log(port, "%s: registered", dev_name(dev)); return port; +out_unregister_pd: + tcpm_port_unregister_pd(port); out_role_sw_put: usb_role_switch_put(port->role_sw); out_destroy_wq: @@ -6422,6 +6559,9 @@ void tcpm_unregister_port(struct tcpm_port *port) hrtimer_cancel(&port->state_machine_timer); tcpm_reset_port(port); + + tcpm_port_unregister_pd(port); + for (i = 0; i < ARRAY_SIZE(port->port_altmode); i++) typec_unregister_altmode(port->port_altmode[i]); typec_unregister_port(port->typec_port); |